$CB
Chubb Ltd Stock $cb

$cb Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-Q Financial Statement

#000089615921000013 Filed on October 28, 2021

Income Statement

Concept	2021 Q4	2021 Q3	2020 Q3
Revenue	$10.48B	$10.85B	$9.464B
YoY Change	6.45%	14.59%	4.63%
Cost Of Revenue		$6.629B	$5.835B
YoY Change		13.61%	15.5%
Gross Profit		$4.216B	$3.629B
YoY Change		16.18%	-9.12%
Gross Profit Margin		38.88%	38.35%
Selling, General & Admin	$815.0M	$811.0M	$737.0M
YoY Change	3.95%	10.04%	-2.64%
% of Gross Profit		19.24%	20.31%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$71.00M	$1.778B	$1.645B
YoY Change	-2.74%	8.09%	2.62%
% of Gross Profit		42.17%	45.33%
Operating Expenses	$8.151B	$9.440B	$8.487B
YoY Change	7.28%	11.23%	11.0%
Operating Profit		-$5.224B	-$4.858B
YoY Change		7.53%	32.99%
Interest Expense	$234.0M	$680.0M	$349.0M
YoY Change	-48.91%	94.84%	-712.28%
% of Operating Profit
Other Income/Expense, Net	-$18.00M	$763.0M	$485.0M
YoY Change	200.0%	57.32%	-4141.67%
Pretax Income	$2.545B	$2.051B	$1.336B
YoY Change	-7.52%	53.52%	1.14%
Income Tax	$404.0M	$218.0M	$142.0M
% Of Pretax Income	15.87%	10.63%	10.63%
Net Earnings	$2.141B	$1.833B	$1.194B
YoY Change	-11.46%	53.52%	9.44%
Net Earnings / Revenue	20.42%	16.9%	12.62%
Basic Earnings Per Share		$4.21	$2.64
Diluted Earnings Per Share	$4.946M	$4.18	$2.63
COMMON SHARES
Basic Shares Outstanding	430.7M shares	435.3M shares	451.8M shares
Diluted Shares Outstanding		438.4M shares	453.3M shares

Balance Sheet

Concept	2021 Q4	2021 Q3	2020 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$1.659B	$1.620B	$1.707B
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	$2.000B	$434.0M	$470.0M
YoY Change	0.0%	-7.66%	-18.54%
Goodwill	$15.21B	$15.39B	$15.25B
YoY Change	-1.21%	0.87%	0.16%
Intangibles	$5.455B	$5.578B	$5.849B
YoY Change	-6.13%	-4.63%	-4.86%
Long-Term Investments	$125.5B	$125.1B	$118.6B
YoY Change	3.27%	5.53%	9.55%
Other Assets	$152.0M	$176.0M	$166.0M
YoY Change	70.79%	6.02%	49.55%
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$200.1B	$199.1B	$187.8B
YoY Change	4.86%	6.0%	7.22%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$14.52B	$15.00B	$12.56B
YoY Change	7.28%	19.44%	9.31%
Accrued Expenses	$484.0M	$472.0M	$517.0M
YoY Change	-6.38%	-8.7%	-16.21%
Deferred Revenue
YoY Change
Short-Term Debt	$999.0M	$0.00	$1.300B
YoY Change		-100.0%	12900.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$23.25B	$22.57B	$20.79B
YoY Change	11.97%	8.56%	12.67%
LONG-TERM LIABILITIES
Long-Term Debt	$15.48B	$15.13B	$15.14B
YoY Change	1.45%	-0.05%	11.37%
Other Long-Term Liabilities
YoY Change
Total Long-Term Liabilities	$15.48B	$15.13B	$15.14B
YoY Change	1.45%	-0.05%	3.75%
TOTAL LIABILITIES
Total Short-Term Liabilities	$23.25B	$22.57B	$20.79B
Total Long-Term Liabilities	$15.48B	$15.13B	$15.14B
Total Liabilities	$140.3B	$139.7B	$131.4B
YoY Change	6.86%	6.37%	8.95%
SHAREHOLDERS EQUITY
Retained Earnings	$47.37B	$45.22B	$36.92B
YoY Change	20.41%	22.5%	5.58%
Common Stock	$19.46B	$19.74B	$21.18B
YoY Change	-6.78%	-6.81%	-6.23%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$7.464B	$6.621B	$3.541B
YoY Change	104.83%	86.98%	1.06%
Treasury Stock Shares	47.45M shares	43.14M shares	26.23M shares
Shareholders Equity	$59.71B	$59.32B	$56.41B
YoY Change
Total Liabilities & Shareholders Equity	$200.1B	$199.1B	$187.8B
YoY Change	4.86%	6.0%	7.22%

Cashflow Statement

Concept	2021 Q4	2021 Q3	2020 Q3
OPERATING ACTIVITIES
Net Income	$2.141B	$1.833B	$1.194B
YoY Change	-11.46%	53.52%	9.44%
Depreciation, Depletion And Amortization	$71.00M	$1.778B	$1.645B
YoY Change	-2.74%	8.09%	2.62%
Cash From Operating Activities	$2.600B	$3.322B	$3.544B
YoY Change	2.2%	-6.26%	60.73%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$2.908B	-$1.726B	-$4.035B
YoY Change	267.17%	-57.22%	216.72%
Cash From Investing Activities	-$2.908B	-$1.726B	-$4.035B
YoY Change	267.17%	-57.22%	216.72%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	396.0M	-1.783B	664.0M
YoY Change	-121.43%	-368.52%	-195.82%
NET CHANGE
Cash From Operating Activities	2.600B	3.322B	3.544B
Cash From Investing Activities	-2.908B	-1.726B	-4.035B
Cash From Financing Activities	396.0M	-1.783B	664.0M
Net Change In Cash	88.00M	-187.0M	173.0M
YoY Change	-191.67%	-208.09%	-27.31%
FREE CASH FLOW
Cash From Operating Activities	$2.600B	$3.322B	$3.544B
Capital Expenditures
Free Cash Flow
YoY Change

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Entity Central Index Key EntityCentralIndexKey	0000896159
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	us-gaap	Accounting Standards Update Extensible List AccountingStandardsUpdateExtensibleList	http://fasb.org/us-gaap/2021-01-31#AccountingStandardsUpdate201613Member
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2021-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-11778
	dei	Entity Registrant Name EntityRegistrantName	CHUBB LIMITED
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	V8
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	98-0091805
	dei	Entity Address Address Line1 EntityAddressAddressLine1	Baerengasse 32
	dei	Entity Address City Or Town EntityAddressCityOrTown	Zurich
	dei	Entity Address Country EntityAddressCountry	CH
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	8001
	dei	Country Region CountryRegion	41
	dei	City Area Code CityAreaCode	(0)43
	dei	Local Phone Number LocalPhoneNumber	456 76 00
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
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CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	72000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	216000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	217000000	USD
CY2021Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	8794000000	USD
CY2020Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	8128000000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	23209000000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	24736000000	USD
CY2021Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2051000000	USD
CY2020Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1336000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	7271000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1410000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-3000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	7000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-5000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-35000000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	218000000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	142000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	873000000	USD
CY2021Q3	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	176000000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	1833000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	295000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	1194000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6398000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1115000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-564000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	687000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-2151000000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	1456000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-10000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	49000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	26000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	-303000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-554000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	638000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-2177000000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	1759000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-414000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	246000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-84000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-168000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-4000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	23000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	33000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	59000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-964000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	861000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-2294000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	1532000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-120000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	103000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-403000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	295000000	USD
CY2021Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-844000000	USD
CY2020Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	758000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1891000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1237000000	USD
CY2021Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	989000000	USD
CY2020Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1952000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	4507000000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	2352000000	USD
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.21
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.42
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.47
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.18
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	14.33
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.46
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	59318000000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	56413000000	USD
CY2021Q3	us-gaap	Stockholders Equity StockholdersEquity	59318000000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	56413000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6398000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1115000000	USD
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	cb	Net Realized Gains Losses NetRealizedGainsLosses	-1069000000	USD
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	us-gaap	Accretion Amortization Of Discounts And Premiums Investments AccretionAmortizationOfDiscountsAndPremiumsInvestments	-280000000	USD
	us-gaap	Present Value Of Future Insurance Profits Amortization Expense1 PresentValueOfFutureInsuranceProfitsAmortizationExpense1	216000000	USD
	us-gaap	Present Value Of Future Insurance Profits Amortization Expense1 PresentValueOfFutureInsuranceProfitsAmortizationExpense1	217000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	268000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	287000000	USD
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	4907000000	USD
	us-gaap	Increase Decrease In Liability For Claims And Claims Adjustment Expense Reserve IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve	5112000000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	2032000000	USD
	us-gaap	Increase Decrease In Unearned Premiums IncreaseDecreaseInUnearnedPremiums	881000000	USD
	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	163000000	USD
	us-gaap	Increase Decrease In Future Policy Benefit Reserves IncreaseDecreaseInFuturePolicyBenefitReserves	138000000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	408000000	USD
	us-gaap	Increase Decrease In Reinsurance Payables IncreaseDecreaseInReinsurancePayables	280000000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	45000000	USD
	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	190000000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	212000000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-95000000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	1257000000	USD
	us-gaap	Increase Decrease In Premiums Receivable IncreaseDecreaseInPremiumsReceivable	324000000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	1071000000	USD
	us-gaap	Increase Decrease In Reinsurance Recoverable IncreaseDecreaseInReinsuranceRecoverable	496000000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	208000000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	77000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	2437000000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	762000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	8549000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	7241000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	23028000000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Debt PaymentsToAcquireAvailableForSaleSecuritiesDebt	20793000000	USD
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	434000000	USD
	us-gaap	Payments To Acquire Held To Maturity Securities PaymentsToAcquireHeldToMaturitySecurities	42000000	USD
	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	799000000	USD
	us-gaap	Payments To Acquire Equity Securities Fv Ni PaymentsToAcquireEquitySecuritiesFvNi	3622000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	5225000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities Debt ProceedsFromSaleOfAvailableForSaleSecuritiesDebt	9537000000	USD
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	750000000	USD
	us-gaap	Proceeds From Sale Of Equity Securities Fv Ni ProceedsFromSaleOfEquitySecuritiesFvNi	1526000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	13710000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	8709000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	1488000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities	841000000	USD
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-809000000	USD
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	434000000	USD
	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	66000000	USD
	us-gaap	Payments For Proceeds From Derivative Instrument Investing Activities PaymentsForProceedsFromDerivativeInstrumentInvestingActivities	74000000	USD
	us-gaap	Payments To Acquire Limited Partnership Interests PaymentsToAcquireLimitedPartnershipInterests	1872000000	USD
	us-gaap	Payments To Acquire Limited Partnership Interests PaymentsToAcquireLimitedPartnershipInterests	1056000000	USD
	us-gaap	Proceeds From Limited Partnership Investments ProceedsFromLimitedPartnershipInvestments	891000000	USD
	us-gaap	Proceeds From Limited Partnership Investments ProceedsFromLimitedPartnershipInvestments	588000000	USD
	cb	Payment Including Deposit For Huatai Group Interest PaymentIncludingDepositForHuataiGroupInterest	208000000	USD
	cb	Payment Including Deposit For Huatai Group Interest PaymentIncludingDepositForHuataiGroupInterest	1557000000	USD
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	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	352000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3751000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-6729000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1056000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	1035000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	3941000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	333000000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
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	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	1402000000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	1405000000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	1402000000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	239000000	USD
	us-gaap	Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans Including Stock Options ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlansIncludingStockOptions	77000000	USD
	us-gaap	Additions To Contract Holders Funds AdditionsToContractHoldersFunds	365000000	USD
	us-gaap	Additions To Contract Holders Funds AdditionsToContractHoldersFunds	322000000	USD
	us-gaap	Withdrawal From Contract Holders Funds WithdrawalFromContractHoldersFunds	331000000	USD
	us-gaap	Withdrawal From Contract Holders Funds WithdrawalFromContractHoldersFunds	253000000	USD
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	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
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	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-234000000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-33000000	USD
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	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-40000000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	227000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1836000000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1646000000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1796000000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1873000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	931000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	668000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	316000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	323000000	USD
CY2021Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1620000000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1747000000	USD
CY2021Q3	us-gaap	Restricted Cash RestrictedCash	176000000	USD
CY2020Q4	us-gaap	Restricted Cash RestrictedCash	89000000	USD
CY2021Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1796000000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1836000000	USD
	us-gaap	Goodwill Period Increase Decrease GoodwillPeriodIncreaseDecrease	-13000000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	89335000000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	12000000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	3786000000	USD
CY2021Q3	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	424000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92685000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	10550000000	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	35000000	USD
CY2021Q3	cb	Debtsecuritiesheldtomaturitynetcarryingvalue Debtsecuritiesheldtomaturitynetcarryingvalue	10515000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	605000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	1000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	11119000000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	85188000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	20000000	USD
CY2020Q4	us-gaap	Restricted Investments RestrictedInvestments	19610000000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	5655000000	USD
CY2020Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	124000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	90699000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	11697000000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	44000000	USD
CY2020Q4	cb	Debtsecuritiesheldtomaturitynetcarryingvalue Debtsecuritiesheldtomaturitynetcarryingvalue	11653000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Gain HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain	859000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Accumulated Unrecognized Holding Loss HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss	2000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	12510000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	10550000000	USD
CY2021Q3	cb	Fixed Maturities Percentof Total Amortizedcost FixedMaturitiesPercentofTotalAmortizedcost	1
CY2020Q4	us-gaap	Held To Maturity Securities HeldToMaturitySecurities	11697000000	USD
CY2020Q4	cb	Fixed Maturities Percentof Total Amortizedcost FixedMaturitiesPercentofTotalAmortizedcost	1
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	4568000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	4568000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	4760000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	4760000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	25747000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	25747000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	26227000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	26227000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	28117000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	28117000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	27232000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	27232000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	14290000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	14290000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	14010000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Fair Value AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue	14010000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	72722000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	72722000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	72229000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	72229000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	19963000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	19963000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	18470000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	18470000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92685000000	USD
CY2021Q3	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	92685000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	90699000000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	90699000000	USD
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CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	954000000	USD
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CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Within One Year Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue	1240000000	USD
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CY2021Q3	cb	Debtsecurities Heldtomaturitymaturityallocatedandsinglematuritydateafteronethroughfiveyearsnetcarryingvalue DebtsecuritiesHeldtomaturitymaturityallocatedandsinglematuritydateafteronethroughfiveyearsnetcarryingvalue	3666000000	USD
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CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After One Through Five Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue	3760000000	USD
CY2021Q3	cb	Debtsecurities Heldtomaturitymaturityallocatedandsinglematuritydateafterfivethroughtenyearsnetcarryingvalue DebtsecuritiesHeldtomaturitymaturityallocatedandsinglematuritydateafterfivethroughtenyearsnetcarryingvalue	2498000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	2627000000	USD
CY2020Q4	cb	Debtsecurities Heldtomaturitymaturityallocatedandsinglematuritydateafterfivethroughtenyearsnetcarryingvalue DebtsecuritiesHeldtomaturitymaturityallocatedandsinglematuritydateafterfivethroughtenyearsnetcarryingvalue	3029000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Five Through Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue	3228000000	USD
CY2021Q3	cb	Debtsecurities Heldtomaturitymaturityallocatedandsinglematuritydateafter10yearsnetcarryingvalue DebtsecuritiesHeldtomaturitymaturityallocatedandsinglematuritydateafter10yearsnetcarryingvalue	1634000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	1878000000	USD
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CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities After Ten Years Fair Value HeldToMaturitySecuritiesDebtMaturitiesAfterTenYearsFairValue	2136000000	USD
CY2021Q3	cb	Debtsecurities Heldtomaturitymaturityallocatedandsinglematuritydatenetcarryingvalue DebtsecuritiesHeldtomaturitymaturityallocatedandsinglematuritydatenetcarryingvalue	8745000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	9251000000	USD
CY2020Q4	cb	Debtsecurities Heldtomaturitymaturityallocatedandsinglematuritydatenetcarryingvalue DebtsecuritiesHeldtomaturitymaturityallocatedandsinglematuritydatenetcarryingvalue	9654000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesSingleMaturityDateFairValue	10364000000	USD
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CY2021Q3	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	1868000000	USD
CY2020Q4	cb	Debtsecurities Heldtomaturitymaturitywithoutsinglematuritydatenetcarryingvalue DebtsecuritiesHeldtomaturitymaturitywithoutsinglematuritydatenetcarryingvalue	1999000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value HeldToMaturitySecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue	2146000000	USD
CY2021Q3	cb	Debtsecuritiesheldtomaturitynetcarryingvalue Debtsecuritiesheldtomaturitynetcarryingvalue	10515000000	USD
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	11119000000	USD
CY2020Q4	cb	Debtsecuritiesheldtomaturitynetcarryingvalue Debtsecuritiesheldtomaturitynetcarryingvalue	11653000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	12510000000	USD
CY2021Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	106000000	USD
CY2020Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-222000000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	85000000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-351000000	USD
CY2021Q3	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-59000000	USD
CY2020Q3	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	46000000	USD
CY2021Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	24.15
	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	252000000	USD
	us-gaap	Fair Value Option Changes In Fair Value Gain Loss1 FairValueOptionChangesInFairValueGainLoss1	-426000000	USD
CY2021Q3	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-4000000	USD
CY2020Q3	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-3000000	USD
	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-5000000	USD
	us-gaap	Gain Loss On Sale Of Other Investments GainLossOnSaleOfOtherInvestments	-43000000	USD
CY2021Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-21000000	USD
CY2020Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-141000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	833000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-1069000000	USD
CY2021Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	11000000	USD
CY2020Q2	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	69000000	USD
CY2020Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	20000000	USD
CY2019Q4	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	0	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	0	USD
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	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Purchased With Credit Deterioration Increase DebtSecuritiesAvailableForSaleAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease	5000000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Writeoff DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff	0	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Writeoff DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff	0	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Writeoff DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff	0	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Writeoff DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff	-5000000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	-2000000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	-40000000	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	-16000000	USD
	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss Recovery DebtSecuritiesAvailableForSaleAllowanceForCreditLossRecovery	-174000000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	12000000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	34000000	USD
CY2021Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	12000000	USD
CY2020Q3	us-gaap	Debt Securities Available For Sale Allowance For Credit Loss DebtSecuritiesAvailableForSaleAllowanceForCreditLoss	34000000	USD
CY2021Q3	us-gaap	Alternative Investment AlternativeInvestment	9768000000	USD
CY2021Q3	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	7131000000	USD
CY2020Q4	us-gaap	Alternative Investment AlternativeInvestment	6770000000	USD
CY2021Q3	us-gaap	Restricted Investments RestrictedInvestments	18820000000	USD
CY2021Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	37000000	USD
CY2020Q2	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	51000000	USD
CY2020Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	44000000	USD
CY2019Q4	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	0	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	-2000000	USD
CY2020Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	-8000000	USD
	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	-9000000	USD
	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss Recovery DebtSecuritiesHeldToMaturityAllowanceForCreditLossRecovery	-8000000	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	35000000	USD
CY2020Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	45000000	USD
CY2021Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	35000000	USD
CY2020Q3	us-gaap	Debt Securities Held To Maturity Allowance For Credit Loss DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	45000000	USD
CY2020Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	3200000000	USD
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	89000000	USD
CY2021Q3	us-gaap	Assets Held In Trust AssetsHeldInTrust	11669000000	USD
CY2020Q4	us-gaap	Assets Held In Trust AssetsHeldInTrust	12305000000	USD
CY2021Q3	cb	Restricted Assets Deposits With Non United States Regulatory Authorities RestrictedAssetsDepositsWithNonUnitedStatesRegulatoryAuthorities	2418000000	USD
CY2020Q4	cb	Restricted Assets Deposits With Non United States Regulatory Authorities RestrictedAssetsDepositsWithNonUnitedStatesRegulatoryAuthorities	2438000000	USD
CY2021Q3	cb	Restricted Assets Deposits With United States Regulatory Authorities RestrictedAssetsDepositsWithUnitedStatesRegulatoryAuthorities	2858000000	USD
CY2020Q4	cb	Restricted Assets Deposits With United States Regulatory Authorities RestrictedAssetsDepositsWithUnitedStatesRegulatoryAuthorities	2905000000	USD
CY2021Q3	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	1425000000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	1462000000	USD
CY2021Q3	us-gaap	Other Restricted Assets Current OtherRestrictedAssetsCurrent	632000000	USD
CY2020Q4	us-gaap	Other Restricted Assets Current OtherRestrictedAssetsCurrent	584000000	USD
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CY2020Q4	us-gaap	Restricted Cash And Investments RestrictedCashAndInvestments	19694000000	USD
	us-gaap	Fair Value Measurements Valuation Processes Description FairValueMeasurementsValuationProcessesDescription	Actuarial model
CY2021Q3	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	11119000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	314000000	USD
CY2020Q4	us-gaap	Held To Maturity Securities Fair Value HeldToMaturitySecuritiesFairValue	12510000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	15550000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverables On Unpaid Losses Allowance ReinsuranceRecoverablesOnUnpaidLossesAllowance	269000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	14647000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables On Unpaid Losses Allowance ReinsuranceRecoverablesOnUnpaidLossesAllowance	257000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverables On Paid Losses ReinsuranceRecoverablesOnPaidLosses	1098000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverables On Paid Losses Allowance ReinsuranceRecoverablesOnPaidLossesAllowance	56000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables On Paid Losses ReinsuranceRecoverablesOnPaidLosses	945000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables On Paid Losses Allowance ReinsuranceRecoverablesOnPaidLossesAllowance	57000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	16648000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	325000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables On Paid And Unpaid Losses ReinsuranceRecoverablesOnPaidAndUnpaidLosses	15592000000	USD
CY2021Q3	cb	Reinsurance Recoverable Future Policy Benefits ReinsuranceRecoverableFuturePolicyBenefits	206000000	USD
CY2021Q3	cb	Reinsurance Recoverables On Future Policy Benefits Allowance ReinsuranceRecoverablesOnFuturePolicyBenefitsAllowance	4000000	USD
CY2020Q4	cb	Reinsurance Recoverable Future Policy Benefits ReinsuranceRecoverableFuturePolicyBenefits	206000000	USD
CY2020Q4	cb	Reinsurance Recoverables On Future Policy Benefits Allowance ReinsuranceRecoverablesOnFuturePolicyBenefitsAllowance	5000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	314000000	USD
CY2019Q4	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	316000000	USD
	us-gaap	Reinsurance Recoverable Credit Loss Expense Reversal ReinsuranceRecoverableCreditLossExpenseReversal	16000000	USD
	us-gaap	Reinsurance Recoverable Credit Loss Expense Reversal ReinsuranceRecoverableCreditLossExpenseReversal	21000000	USD
	us-gaap	Reinsurance Loss On Uncollectible Accounts In Period Amount ReinsuranceLossOnUncollectibleAccountsInPeriodAmount	4000000	USD
	us-gaap	Reinsurance Loss On Uncollectible Accounts In Period Amount ReinsuranceLossOnUncollectibleAccountsInPeriodAmount	19000000	USD
	cb	Reinsurance Recoverable Allowance For Credit Loss Other ReinsuranceRecoverableAllowanceForCreditLossOther	-1000000	USD
	cb	Reinsurance Recoverable Allowance For Credit Loss Other ReinsuranceRecoverableAllowanceForCreditLossOther	2000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	325000000	USD
CY2019Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	14181000000	USD
CY2020Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	53164000000	USD
CY2020Q3	us-gaap	Reinsurance Recoverables Allowance ReinsuranceRecoverablesAllowance	320000000	USD
	us-gaap	Schedule Of Liability For Unpaid Claims And Claims Adjustment Expense ScheduleOfLiabilityForUnpaidClaimsAndClaimsAdjustmentExpense	<div style="text-align:justify"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:120%">The following table presents a reconciliation of beginning and ending Unpaid losses and loss expenses:</span></div><div style="text-align:center"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"/><td style="width:73.617%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.188%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:0.506%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.189%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="9" style="padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">Nine Months Ended</span></td></tr><tr><td colspan="3" style="padding:0 1pt"/><td colspan="9" style="padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">September 30</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">(in millions of U.S. dollars)</span></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">2021</span></td><td colspan="3" style="border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="border-top:0.5pt solid #000000;padding:2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">2020</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Gross unpaid losses and loss expenses – beginning of period</span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">67,811</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:0 1pt"/><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">62,690 </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Reinsurance recoverable on unpaid losses </span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:10pt;font-weight:400;line-height:100%">–</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%"> beginning of period </span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:4.55pt;font-weight:400;line-height:100%;position:relative;top:-2.44pt;vertical-align:baseline">(1)</span></div></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">(14,647)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">(14,181)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Net unpaid losses and loss expenses – beginning of period</span></td><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">53,164</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">48,509 </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/></tr><tr><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Net losses and loss expenses incurred in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Current year</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">17,556</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">17,109 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Prior years </span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:4.55pt;font-weight:400;line-height:100%;position:relative;top:-2.44pt;vertical-align:baseline">(2)</span></div></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">(868)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">(212)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Total</span></td><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">16,688</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">16,897 </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Net losses and loss expenses paid in respect of losses occurring in:</span></td><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Current year</span></td><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">4,771</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">4,766 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Prior years</span></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">7,922</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">7,597 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Total</span></td><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">12,693</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">12,363 </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Foreign currency revaluation and other</span></td><td colspan="2" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">(78)</span></td><td style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">95 </span></td><td style="background-color:#ffffff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Net unpaid losses and loss expenses – end of period</span></td><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">57,081</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">53,138 </span></td><td style="background-color:#cceeff;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:bottom"><div><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Reinsurance recoverable on unpaid losses </span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:4.55pt;font-weight:400;line-height:100%;position:relative;top:-2.44pt;vertical-align:baseline">(1)</span></div></td><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">15,550</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">14,767 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:9.75pt;font-weight:400;line-height:100%">Gross unpaid losses and loss expenses – end of period</span></td><td style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:700;line-height:100%">72,631</span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%"> </span></td><td style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:0 1pt"/><td style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:8.5pt;font-weight:400;line-height:100%">67,905 </span></td><td style="background-color:#cceeff;border-bottom:2pt solid #000000;border-top:0.5pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div><div style="padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:4.55pt;font-weight:400;line-height:120%;position:relative;top:-2.44pt;vertical-align:baseline">(1) </span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:7pt;font-weight:400;line-height:120%">Net of valuation allowance for uncollectible reinsurance. </span></div><div style="margin-top:3pt;padding-left:18pt;text-indent:-18pt"><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:4.55pt;font-weight:400;line-height:120%;position:relative;top:-2.44pt;vertical-align:baseline">(2) </span><span style="color:#000000;font-family:'News Gothic',sans-serif;font-size:7pt;font-weight:400;line-height:120%">Relates to prior period loss reserve development only and excludes prior period development related to reinstatement premiums, expense adjustments and earned premiums totaling $87 million and $23 million for the nine months ended September 30, 2021 and 2020, respectively.</span></div>
CY2020Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	67811000000	USD
CY2019Q4	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	62690000000	USD
CY2020Q4	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	14647000000	USD
CY2019Q4	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	48509000000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	17556000000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Current Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense	17109000000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-868000000	USD
	us-gaap	Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claims And Claims Adjustment Expense SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense	-212000000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	16688000000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Incurred Claims1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1	16897000000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	4771000000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Current Year1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1	4766000000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	7922000000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Claims Paid Prior Years1 LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1	7597000000	USD
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	12693000000	USD
	us-gaap	Payments For Losses And Loss Adjustment Expense PaymentsForLossesAndLossAdjustmentExpense	12363000000	USD
CY2021Q3	cb	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Revaluation And Other LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyRevaluationAndOther	-78000000	USD
CY2020Q3	cb	Liability For Unpaid Claims And Claims Adjustment Expense Foreign Currency Revaluation And Other LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyRevaluationAndOther	95000000	USD
CY2021Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	57081000000	USD
CY2020Q3	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Net LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet	53138000000	USD
CY2021Q3	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	15550000000	USD
CY2020Q3	us-gaap	Reinsurance Recoverable For Unpaid Claims And Claims Adjustments ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments	14767000000	USD
CY2021Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	72631000000	USD
CY2020Q3	us-gaap	Liability For Claims And Claims Adjustment Expense LiabilityForClaimsAndClaimsAdjustmentExpense	67905000000	USD
	cb	Prior Period Developmentnetadjustments PriorPeriodDevelopmentnetadjustments	87000000	USD
	cb	Prior Period Developmentnetadjustments PriorPeriodDevelopmentnetadjustments	23000000	USD
	cb	Liabilityfor Unpaid Claimsand Claims Adjustment Expense Period Increase Decrease Gross LiabilityforUnpaidClaimsandClaimsAdjustmentExpensePeriodIncreaseDecreaseGross	4820000000	USD
	us-gaap	Liability For Unpaid Claims And Claims Adjustment Expense Period Increase Decrease LiabilityForUnpaidClaimsAndClaimsAdjustmentExpensePeriodIncreaseDecrease	3917000000	USD
CY2019Q2	cb	Annualdividendpershareapprovedbyshareholders Annualdividendpershareapprovedbyshareholders	3.00
CY2021Q3	cb	Net Prior Period Development NetPriorPeriodDevelopment	-321000000	USD
	cb	Net Prior Period Development NetPriorPeriodDevelopment	-781000000	USD
CY2020Q3	cb	Net Prior Period Development NetPriorPeriodDevelopment	-146000000	USD
	cb	Net Prior Period Development NetPriorPeriodDevelopment	-189000000	USD
CY2021Q3	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	22000000	USD
CY2020Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	30000000	USD
CY2021Q3	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-82000000	USD
CY2020Q3	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	4000000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	141000000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-420000000	USD
CY2021Q3	us-gaap	Securities Held As Collateral At Fair Value SecuritiesHeldAsCollateralAtFairValue	2368000000	USD
CY2020Q4	us-gaap	Securities Held As Collateral At Fair Value SecuritiesHeldAsCollateralAtFairValue	1844000000	USD
CY2021Q3	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	2368000000	USD
CY2021Q2	cb	Annualdividendpershareapprovedbyshareholders Annualdividendpershareapprovedbyshareholders	3.20
CY2020Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	1844000000	USD
CY2021Q3	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	1406000000	USD
CY2020Q4	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	1405000000	USD
CY2021Q3	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	1425000000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities For Repurchase Agreements PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForRepurchaseAgreements	1462000000	USD
CY2021Q3	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	1406000000	USD
CY2020Q4	us-gaap	Secured Debt Repurchase Agreements SecuredDebtRepurchaseAgreements	1405000000	USD
CY2021Q3	us-gaap	Purchase Commitment Remaining Minimum Amount Committed PurchaseCommitmentRemainingMinimumAmountCommitted	825000000	USD
CY2021Q3	cb	Other Investments Limited Partnerships And Partially Owned Investment Companies Carrying Value OtherInvestmentsLimitedPartnershipsAndPartiallyOwnedInvestmentCompaniesCarryingValue	9500000000	USD
CY2021Q3	us-gaap	Other Commitment OtherCommitment	7100000000	USD
CY2020Q4	cb	Other Investments Limited Partnerships And Partially Owned Investment Companies Carrying Value OtherInvestmentsLimitedPartnershipsAndPartiallyOwnedInvestmentCompaniesCarryingValue	6500000000	USD
CY2020Q4	us-gaap	Other Commitment OtherCommitment	3200000000	USD
CY2021Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	62000000	USD
CY2021Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	434000000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	473000000	USD
CY2021Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	472000000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	517000000	USD
CY2021Q2	cb	Common Stock Dividend Rate Approved CommonStockDividendRateApproved	0.80
CY2020Q2	cb	Annualdividendpershareapprovedbyshareholders Annualdividendpershareapprovedbyshareholders	3.12
CY2020Q2	cb	Common Stock Dividend Rate Approved CommonStockDividendRateApproved	0.78
CY2019Q2	cb	Common Stock Dividend Rate Approved CommonStockDividendRateApproved	0.75
CY2021Q3	us-gaap	Treasury Stock Shares Retired TreasuryStockSharesRetired	3584150	shares
CY2021Q3	us-gaap	Treasury Stock Shares Retired TreasuryStockSharesRetired	3584150	shares
	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	3021027	shares
CY2021Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	43144862	shares
CY2020Q3	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	4000000	USD
CY2021Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	802000000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	479000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	2073000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	435000000	USD
CY2021Q3	cb	Gains Losses On Fair Value Changes In Separate Account Assets GainsLossesOnFairValueChangesInSeparateAccountAssets	-24000000	USD
CY2020Q3	cb	Gains Losses On Fair Value Changes In Separate Account Assets GainsLossesOnFairValueChangesInSeparateAccountAssets	24000000	USD
	cb	Gains Losses On Fair Value Changes In Separate Account Assets GainsLossesOnFairValueChangesInSeparateAccountAssets	-5000000	USD
	cb	Gains Losses On Fair Value Changes In Separate Account Assets GainsLossesOnFairValueChangesInSeparateAccountAssets	8000000	USD
CY2021Q3	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	5000000	USD
	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	15000000	USD
	us-gaap	Excise And Sales Taxes ExciseAndSalesTaxes	16000000	USD
CY2021Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	10000000	USD
CY2020Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	14000000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	23000000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	55000000	USD
CY2021Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	763000000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	485000000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2030000000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	372000000	USD
CY2021Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	10510000000	USD
CY2021Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	10000000000	USD
CY2021Q3	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	6629000000	USD
CY2021Q3	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	151000000	USD
CY2021Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1778000000	USD
CY2021Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	806000000	USD
CY2021Q3	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	636000000	USD
CY2021Q3	us-gaap	Net Investment Income NetInvestmentIncome	866000000	USD
CY2021Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	763000000	USD
CY2021Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	71000000	USD
CY2021Q3	cb	Segment Underwriting Income Lossand Net Investment Income Loss SegmentUnderwritingIncomeLossandNetInvestmentIncomeLoss	2194000000	USD
CY2021Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-21000000	USD
CY2021Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-122000000	USD
CY2021Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	218000000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	1833000000	USD
CY2020Q3	us-gaap	Premiums Written Net PremiumsWrittenNet	9078000000	USD
CY2020Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	8765000000	USD
CY2020Q3	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	5835000000	USD
CY2020Q3	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	198000000	USD
CY2020Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	1645000000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	733000000	USD
CY2020Q3	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	354000000	USD
CY2020Q3	us-gaap	Net Investment Income NetInvestmentIncome	840000000	USD
CY2020Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	485000000	USD
CY2020Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	72000000	USD
CY2020Q3	cb	Segment Underwriting Income Lossand Net Investment Income Loss SegmentUnderwritingIncomeLossandNetInvestmentIncomeLoss	1607000000	USD
CY2020Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-141000000	USD
CY2020Q3	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-130000000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	142000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	1194000000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	28718000000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	27034000000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	16688000000	USD
	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	503000000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	5141000000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	2325000000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	372000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	217000000	USD
	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	2377000000	USD
	us-gaap	Net Investment Income NetInvestmentIncome	2613000000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	2030000000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	216000000	USD
	cb	Segment Underwriting Income Lossand Net Investment Income Loss SegmentUnderwritingIncomeLossandNetInvestmentIncomeLoss	6804000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	833000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-366000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	873000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6398000000	USD
	us-gaap	Premiums Written Net PremiumsWrittenNet	25410000000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	24687000000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	16897000000	USD
	us-gaap	Liability For Future Policy Benefits Period Expense LiabilityForFuturePolicyBenefitsPeriodExpense	550000000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	4853000000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	2201000000	USD
	us-gaap	Underwriting Income Loss UnderwritingIncomeLoss	186000000	USD
	us-gaap	Net Investment Income NetInvestmentIncome	2528000000	USD
	cb	Segment Underwriting Income Lossand Net Investment Income Loss SegmentUnderwritingIncomeLossandNetInvestmentIncomeLoss	2869000000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-1069000000	USD
	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-390000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	295000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1115000000	USD
CY2021Q3	us-gaap	Net Income Loss NetIncomeLoss	1833000000	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	1194000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	6398000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1115000000	USD
CY2021Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	435318088	shares
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	451794046	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	443595026	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	451683093	shares
CY2021Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3123550	shares
CY2020Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1471434	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3032989	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1894699	shares
CY2021Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	438441638	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	453265480	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	446628015	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	453577792	shares
CY2021Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.21
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.64
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	14.42
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.47
CY2021Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.18
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.63
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	14.33
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.46
CY2021Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1758853	shares
CY2020Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	7053316	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1439882	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	6767727	shares

Files In Submission

Name	View Source	Status
0000896159-21-000013-index-headers.html	Edgar Link	pending
0000896159-21-000013-index.html	Edgar Link	pending
0000896159-21-000013.txt	Edgar Link	pending
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cb-20210930.htm	Edgar Link	pending
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cb-9302021xex312.htm	Edgar Link	pending
cb-9302021xex321.htm	Edgar Link	pending
cb-9302021xex322.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
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$CB
Chubb Ltd Stock $cb

2021 Q4 Form 10-Q Financial Statement

#000089615921000013 Filed on October 28, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CB Chubb Ltd Stock $cb

2021 Q4 Form 10-Q Financial Statement

#000089615921000013 Filed on October 28, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CB
Chubb Ltd Stock $cb