false2023FY0000896159P1Y0M0DP3Y0M0Dhttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossBeforeTaxhttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossBeforeTaxhttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#OtherComprehensiveIncomeLossBeforeTaxhttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#Revenueshttp://fasb.org/us-gaap/2023#OtherLiabilitieshttp://fasb.org/us-gaap/2023#OtherLiabilities00008961592023-01-012023-12-310000896159us-gaap:CommonClassAMember2023-01-012023-12-310000896159cb:INASeniorNotesDueDecember2024Member2023-01-012023-12-310000896159cb:INASeniorNotesDueJune2027Member2023-01-012023-12-310000896159cb:INASeniorNotesDueMarch2028Member2023-01-012023-12-310000896159cb:INASeniorNotesDueDecember2029Member2023-01-012023-12-310000896159cb:INASeniorNotesDueJune2031Member2023-01-012023-12-310000896159cb:INASeniorNotesDueMarch2038Member2023-01-012023-12-3100008961592023-06-30iso4217:USD00008961592024-02-16xbrli:shares00008961592023-12-31iso4217:CHFxbrli:shares0000896159cb:JohnJLupicaMember2023-01-012023-12-310000896159cb:JohnJLupicaMember2023-10-012023-12-310000896159cb:JohnJLupicaMember2023-12-310000896159cb:JohnJLupicaMembercb:JohnJ.LupicaOptionsExpiringDecember202025Abstract2023-12-310000896159cb:JohnJLupicaMembercb:JohnJ.LupicaCommonStockFromOptionExerciseExpiringDecember202025Member2023-12-3100008961592023-10-012023-12-3100008961592022-12-310000896159us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-12-310000896159us-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-12-3100008961592022-01-012022-12-3100008961592021-01-012021-12-31iso4217:USDxbrli:shares0000896159us-gaap:CommonStockMember2022-12-310000896159us-gaap:CommonStockMember2021-12-310000896159us-gaap:CommonStockMember2020-12-310000896159us-gaap:CommonStockMember2023-01-012023-12-310000896159us-gaap:CommonStockMember2022-01-012022-12-310000896159us-gaap:CommonStockMember2021-01-012021-12-310000896159us-gaap:CommonStockMember2023-12-310000896159us-gaap:TreasuryStockCommonMember2022-12-310000896159us-gaap:TreasuryStockCommonMember2021-12-310000896159us-gaap:TreasuryStockCommonMember2020-12-310000896159us-gaap:TreasuryStockCommonMember2023-01-012023-12-310000896159us-gaap:TreasuryStockCommonMember2022-01-012022-12-310000896159us-gaap:TreasuryStockCommonMember2021-01-012021-12-310000896159us-gaap:TreasuryStockCommonMember2023-12-310000896159us-gaap:AdditionalPaidInCapitalMember2022-12-310000896159us-gaap:AdditionalPaidInCapitalMember2021-12-310000896159us-gaap:AdditionalPaidInCapitalMember2020-12-310000896159us-gaap:AdditionalPaidInCapitalMember2023-01-012023-12-310000896159us-gaap:AdditionalPaidInCapitalMember2022-01-012022-12-310000896159us-gaap:AdditionalPaidInCapitalMember2021-01-012021-12-310000896159us-gaap:AdditionalPaidInCapitalMember2023-12-310000896159us-gaap:RetainedEarningsMember2022-12-310000896159us-gaap:RetainedEarningsMember2021-12-310000896159us-gaap:RetainedEarningsMember2020-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2022-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2021-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:RetainedEarningsMember2020-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:RetainedEarningsMember2022-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:RetainedEarningsMember2021-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:RetainedEarningsMember2020-12-310000896159us-gaap:RetainedEarningsMember2023-01-012023-12-310000896159us-gaap:RetainedEarningsMember2022-01-012022-12-310000896159us-gaap:RetainedEarningsMember2021-01-012021-12-310000896159us-gaap:RetainedEarningsMember2023-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMember2020-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2022-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2021-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2020-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2022-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2021-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMembersrt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2020-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000896159us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-12-3100008961592021-12-310000896159us-gaap:NoncontrollingInterestMember2022-12-310000896159us-gaap:NoncontrollingInterestMember2021-12-310000896159us-gaap:NoncontrollingInterestMember2020-12-310000896159us-gaap:NoncontrollingInterestMember2023-12-310000896159us-gaap:NoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:NoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:NoncontrollingInterestMember2021-01-012021-12-3100008961592020-12-310000896159cb:HuataiGroupMember2023-12-31xbrli:pure0000896159srt:MinimumMember2023-01-012023-12-310000896159srt:MaximumMember2023-01-012023-12-310000896159srt:MinimumMember2023-12-310000896159srt:MaximumMember2023-12-310000896159cb:TheChubbCorporationMembercb:FairValueAdjustmenttoAcquiredLossReservesMember2023-12-310000896159cb:TheChubbCorporationMembercb:FairValueAdjustmenttoAcquiredLossReservesMember2022-12-310000896159us-gaap:SoftwareDevelopmentMember2023-12-310000896159us-gaap:BuildingMember2023-12-310000896159us-gaap:SoftwareDevelopmentMembersrt:MinimumMember2023-12-310000896159us-gaap:SoftwareDevelopmentMembersrt:MaximumMember2023-12-310000896159us-gaap:BuildingMembersrt:MaximumMember2023-12-310000896159us-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Member2021-01-010000896159srt:ScenarioPreviouslyReportedMember2022-12-310000896159us-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Member2022-12-310000896159srt:ScenarioPreviouslyReportedMember2022-01-012022-12-310000896159us-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Member2022-01-012022-12-310000896159srt:ScenarioPreviouslyReportedMember2021-01-012021-12-310000896159us-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Member2021-01-012021-12-310000896159us-gaap:TermLifeInsuranceMembersrt:ScenarioPreviouslyReportedMembercb:SegmentLifeMember2020-12-310000896159us-gaap:WholeLifeInsuranceMembersrt:ScenarioPreviouslyReportedMembercb:SegmentLifeMember2020-12-310000896159srt:ScenarioPreviouslyReportedMemberus-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2020-12-310000896159srt:ScenarioPreviouslyReportedMembercb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2020-12-310000896159cb:SegmentInsuranceOverseasGeneralMembersrt:ScenarioPreviouslyReportedMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2020-12-310000896159srt:ScenarioPreviouslyReportedMember2020-12-310000896159us-gaap:TermLifeInsuranceMemberus-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Membercb:SegmentLifeMember2021-01-012021-01-010000896159us-gaap:WholeLifeInsuranceMemberus-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Membercb:SegmentLifeMember2021-01-012021-01-010000896159us-gaap:AccidentAndHealthInsuranceSegmentMemberus-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Membercb:SegmentLifeMember2021-01-012021-01-010000896159us-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Membercb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2021-01-012021-01-010000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:AccidentAndHealthInsuranceSegmentMemberus-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Member2021-01-012021-01-010000896159us-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Member2021-01-012021-01-010000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2021-01-010000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2021-01-010000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2021-01-010000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2021-01-010000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2021-01-0100008961592021-01-010000896159srt:ScenarioPreviouslyReportedMemberus-gaap:VariableAnnuityMember2020-12-310000896159us-gaap:GuaranteedMinimumDeathBenefitMemberus-gaap:EffectOfModifiedRetrospectiveApplicationAccountingStandardsUpdate201812Member2021-01-012021-01-010000896159us-gaap:VariableAnnuityMember2021-01-010000896159cb:HuataiGroupMember2023-06-300000896159cb:HuataiGroupMember2023-07-010000896159cb:HuataiGroupMember2023-07-012023-07-010000896159cb:HuataiGroupMember2023-10-012023-12-310000896159cb:HuataiGroupMember2023-01-012023-12-310000896159cb:HuataiGroupMemberus-gaap:SubsequentEventMember2024-01-012024-03-310000896159us-gaap:SubsequentEventMembercb:HuataiGroupMember2024-01-012024-03-310000896159cb:HuataiGroupMember2023-01-012023-12-310000896159cb:HuataiGroupMember2023-12-310000896159cb:HuataiGroupMember2023-07-010000896159cb:HuataiGroupMember2023-07-012023-12-310000896159us-gaap:DistributionRightsMembercb:HuataiGroupMember2023-07-012023-07-010000896159us-gaap:DistributionRightsMembercb:HuataiGroupMember2023-07-010000896159us-gaap:ContractualRightsMembercb:HuataiGroupMember2023-07-012023-07-010000896159us-gaap:ContractualRightsMembercb:HuataiGroupMember2023-07-010000896159cb:UnearnedPremiumReservesIntangibleAssetMembercb:HuataiGroupMember2023-07-012023-07-010000896159cb:UnearnedPremiumReservesIntangibleAssetMembercb:HuataiGroupMember2023-07-010000896159us-gaap:UseRightsMembercb:HuataiGroupMember2023-07-012023-07-010000896159us-gaap:UseRightsMembercb:HuataiGroupMember2023-07-010000896159us-gaap:TechnologyBasedIntangibleAssetsMembercb:HuataiGroupMember2023-07-012023-07-010000896159us-gaap:TechnologyBasedIntangibleAssetsMembercb:HuataiGroupMember2023-07-010000896159us-gaap:TrademarksMembercb:HuataiGroupMember2023-07-010000896159us-gaap:ContractualRightsMembercb:HuataiGroupMember2023-07-010000896159srt:ProFormaMembercb:HuataiGroupMember2023-01-012023-12-310000896159srt:ProFormaMembercb:HuataiGroupMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMember2022-07-012022-07-010000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMember2022-07-010000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMember2022-07-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembersrt:ProFormaMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembersrt:ProFormaMember2021-01-012021-12-3100008961592023-01-012023-06-300000896159us-gaap:USTreasuryAndGovernmentMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMember2023-12-310000896159us-gaap:CorporateDebtSecuritiesMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMember2023-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMember2023-12-310000896159us-gaap:USTreasuryAndGovernmentMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMember2022-12-310000896159us-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:MortgageBackedSecuritiesMember2022-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310000896159srt:StandardPoorsAAARatingMember2022-12-310000896159srt:StandardPoorsAARatingMember2022-12-310000896159srt:StandardPoorsARatingMember2022-12-310000896159srt:StandardPoorsBBBRatingMember2022-12-310000896159srt:StandardPoorsBBRatingMember2022-12-310000896159cb:OtherMember2022-12-310000896159us-gaap:FixedMaturitiesMember2023-01-012023-12-310000896159us-gaap:FixedMaturitiesMember2022-01-012022-12-310000896159us-gaap:FixedMaturitiesMember2021-01-012021-12-310000896159us-gaap:OtherInvestmentsMember2023-01-012023-12-310000896159us-gaap:OtherInvestmentsMember2022-01-012022-12-310000896159us-gaap:OtherInvestmentsMember2021-01-012021-12-310000896159us-gaap:EquitySecuritiesMember2023-01-012023-12-310000896159us-gaap:EquitySecuritiesMember2022-01-012022-12-310000896159us-gaap:EquitySecuritiesMember2021-01-012021-12-310000896159cb:AlternativeInvestmentMember2023-01-012023-12-310000896159cb:AlternativeInvestmentMember2022-01-012022-12-310000896159cb:AlternativeInvestmentMember2021-01-012021-12-310000896159us-gaap:ForeignExchangeContractMember2023-01-012023-12-310000896159us-gaap:ForeignExchangeContractMember2022-01-012022-12-310000896159us-gaap:ForeignExchangeContractMember2021-01-012021-12-310000896159us-gaap:OtherContractMember2023-01-012023-12-310000896159us-gaap:OtherContractMember2022-01-012022-12-310000896159us-gaap:OtherContractMember2021-01-012021-12-310000896159cb:OtherMember2023-01-012023-12-310000896159cb:OtherMember2022-01-012022-12-310000896159cb:OtherMember2021-01-012021-12-310000896159us-gaap:AvailableforsaleSecuritiesMember2023-01-012023-12-310000896159us-gaap:AvailableforsaleSecuritiesMember2022-01-012022-12-310000896159us-gaap:AvailableforsaleSecuritiesMember2021-01-012021-12-310000896159us-gaap:HeldtomaturitySecuritiesMember2023-01-012023-12-310000896159us-gaap:HeldtomaturitySecuritiesMember2022-01-012022-12-310000896159us-gaap:HeldtomaturitySecuritiesMember2021-01-012021-12-310000896159cb:EquitysecuritiesandotherinvestmentsMember2023-01-012023-12-310000896159cb:EquitysecuritiesandotherinvestmentsMember2022-01-012022-12-310000896159cb:EquitysecuritiesandotherinvestmentsMember2021-01-012021-12-310000896159cb:OtherAccountingMethodMemberus-gaap:FixedMaturitiesMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000896159cb:OtherAccountingMethodMemberus-gaap:FixedMaturitiesMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000896159cb:OtherAccountingMethodMemberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:LifeInsuranceSegmentMember2023-12-310000896159cb:OtherAccountingMethodMemberus-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:LifeInsuranceSegmentMember2022-12-310000896159cb:OtherAccountingMethodMemberus-gaap:PolicyLoansMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000896159cb:OtherAccountingMethodMemberus-gaap:PolicyLoansMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000896159cb:OtherAccountingMethodMembercb:NonqualifiedseparateaccountassetsMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000896159cb:OtherAccountingMethodMembercb:NonqualifiedseparateaccountassetsMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000896159cb:OtherMembercb:OtherAccountingMethodMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000896159cb:OtherMembercb:OtherAccountingMethodMemberus-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000896159us-gaap:EstimateOfFairValueFairValueDisclosureMember2023-12-310000896159us-gaap:EstimateOfFairValueFairValueDisclosureMember2022-12-310000896159srt:MinimumMembercb:FinancialMember2022-01-012022-12-310000896159srt:MinimumMembercb:FinancialMember2023-01-012023-12-310000896159srt:MaximumMembercb:FinancialMember2022-01-012022-12-310000896159srt:MaximumMembercb:FinancialMember2023-01-012023-12-310000896159cb:FinancialMember2023-12-310000896159cb:FinancialMember2022-12-310000896159us-gaap:RealEstateFundsMembersrt:MinimumMember2022-01-012022-12-310000896159us-gaap:RealEstateFundsMembersrt:MinimumMember2023-01-012023-12-310000896159us-gaap:RealEstateFundsMembersrt:MaximumMember2022-01-012022-12-310000896159us-gaap:RealEstateFundsMembersrt:MaximumMember2023-01-012023-12-310000896159us-gaap:RealEstateFundsMember2023-12-310000896159us-gaap:RealEstateFundsMember2022-12-310000896159srt:MinimumMembercb:DistressedAlternativeInvestmentsMember2022-01-012022-12-310000896159srt:MinimumMembercb:DistressedAlternativeInvestmentsMember2023-01-012023-12-310000896159srt:MaximumMembercb:DistressedAlternativeInvestmentsMember2022-01-012022-12-310000896159srt:MaximumMembercb:DistressedAlternativeInvestmentsMember2023-01-012023-12-310000896159cb:DistressedAlternativeInvestmentsMember2023-12-310000896159cb:DistressedAlternativeInvestmentsMember2022-12-310000896159srt:MinimumMembercb:PrivateCreditAlternativeInvestmentsMember2022-01-012022-12-310000896159srt:MinimumMembercb:PrivateCreditAlternativeInvestmentsMember2023-01-012023-12-310000896159srt:MaximumMembercb:PrivateCreditAlternativeInvestmentsMember2022-01-012022-12-310000896159srt:MaximumMembercb:PrivateCreditAlternativeInvestmentsMember2023-01-012023-12-310000896159cb:PrivateCreditAlternativeInvestmentsMember2023-12-310000896159cb:PrivateCreditAlternativeInvestmentsMember2022-12-310000896159srt:MinimumMemberus-gaap:PrivateEquityFundsMember2022-01-012022-12-310000896159srt:MinimumMemberus-gaap:PrivateEquityFundsMember2023-01-012023-12-310000896159srt:MaximumMemberus-gaap:PrivateEquityFundsMember2022-01-012022-12-310000896159srt:MaximumMemberus-gaap:PrivateEquityFundsMember2023-01-012023-12-310000896159us-gaap:PrivateEquityFundsMember2023-12-310000896159us-gaap:PrivateEquityFundsMember2022-12-310000896159srt:MinimumMembercb:VintageAlternativeInvestmentsMember2022-01-012022-12-310000896159srt:MinimumMembercb:VintageAlternativeInvestmentsMember2023-01-012023-12-310000896159srt:MaximumMembercb:VintageAlternativeInvestmentsMember2022-01-012022-12-310000896159srt:MaximumMembercb:VintageAlternativeInvestmentsMember2023-01-012023-12-310000896159cb:VintageAlternativeInvestmentsMember2023-12-310000896159cb:VintageAlternativeInvestmentsMember2022-12-310000896159cb:InvestmentFundsAlternativeInvestmentsMember2023-12-310000896159cb:InvestmentFundsAlternativeInvestmentsMember2022-12-31cb:partnerships0000896159country:CNcb:HuataiGroupMember2023-12-310000896159country:CNcb:HuataiGroupMember2023-12-310000896159country:CNcb:HuataiGroupMember2022-12-310000896159country:CNcb:HuataiGroupMember2022-12-310000896159cb:HuataiLifeInsuranceCo.Membercountry:CN2023-12-310000896159cb:HuataiLifeInsuranceCo.Membercountry:CN2023-12-310000896159cb:HuataiLifeInsuranceCo.Membercountry:CN2022-12-310000896159cb:HuataiLifeInsuranceCo.Membercountry:CN2022-12-310000896159cb:FreisenbruchMeyerMembercountry:BM2023-12-310000896159cb:FreisenbruchMeyerMembercountry:BM2023-12-310000896159cb:FreisenbruchMeyerMembercountry:BM2022-12-310000896159cb:FreisenbruchMeyerMembercountry:BM2022-12-310000896159country:SAcb:ChubbArabiaCooperativeInsuranceCompanyMember2023-12-310000896159country:SAcb:ChubbArabiaCooperativeInsuranceCompanyMember2023-12-310000896159country:SAcb:ChubbArabiaCooperativeInsuranceCompanyMember2022-12-310000896159country:SAcb:ChubbArabiaCooperativeInsuranceCompanyMember2022-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Membercountry:BM2023-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Membercountry:BM2023-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Membercountry:BM2022-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Membercountry:BM2022-12-310000896159us-gaap:ShortTermInvestmentsMember2023-01-012023-12-310000896159us-gaap:ShortTermInvestmentsMember2022-01-012022-12-310000896159us-gaap:ShortTermInvestmentsMember2021-01-012021-12-310000896159cb:OtherinterestincomeMember2023-01-012023-12-310000896159cb:OtherinterestincomeMember2022-01-012022-12-310000896159cb:OtherinterestincomeMember2021-01-012021-12-310000896159us-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel12And3Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2023-12-310000896159us-gaap:PolicyLoansMember2023-12-310000896159cb:InvestmentFundsLimitedPartnershipsPartiallyOwnedInvestmentCompaniesFairValueMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel12And3Memberus-gaap:USTreasuryAndGovernmentMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueInputsLevel3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:GuaranteedMinimumIncomeBenefitMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:FairValueMeasurementsRecurringMember2022-12-310000896159us-gaap:PolicyLoansMember2022-12-310000896159cb:InvestmentFundsLimitedPartnershipsPartiallyOwnedInvestmentCompaniesFairValueMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2022-12-310000896159us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:ShortTermInvestmentsMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2023-01-012023-12-310000896159us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2023-01-012023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2023-01-012023-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2023-01-012023-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:ShortTermInvestmentsMember2023-01-012023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2023-12-310000896159us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:ShortTermInvestmentsMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2021-12-310000896159us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2021-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2021-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2021-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:ShortTermInvestmentsMember2021-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2022-01-012022-12-310000896159us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2022-01-012022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2022-01-012022-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2022-01-012022-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:ShortTermInvestmentsMember2022-01-012022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2020-12-310000896159us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2020-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2020-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2020-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:ShortTermInvestmentsMember2020-12-310000896159us-gaap:OtherLongTermInvestmentsMemberus-gaap:FairValueInputsLevel3Member2020-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2021-01-012021-12-310000896159us-gaap:CorporateDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2021-01-012021-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Memberus-gaap:AvailableforsaleSecuritiesMember2021-01-012021-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:EquitySecuritiesMember2021-01-012021-12-310000896159us-gaap:FairValueInputsLevel3Memberus-gaap:ShortTermInvestmentsMember2021-01-012021-12-310000896159us-gaap:OtherLongTermInvestmentsMemberus-gaap:FairValueInputsLevel3Member2021-01-012021-12-310000896159us-gaap:OtherLongTermInvestmentsMemberus-gaap:FairValueInputsLevel3Member2021-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Member2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember2023-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel3Member2023-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel12And3Member2023-12-310000896159us-gaap:CarryingReportedAmountFairValueDisclosureMember2023-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Memberus-gaap:USTreasuryAndGovernmentMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:USTreasuryAndGovernmentMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel3Memberus-gaap:USTreasuryAndGovernmentMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:USTreasuryAndGovernmentMember2022-12-310000896159us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:USTreasuryAndGovernmentMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Memberus-gaap:ForeignGovernmentDebtSecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:ForeignGovernmentDebtSecuritiesMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel3Member2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel12And3Member2022-12-310000896159us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:ForeignGovernmentDebtSecuritiesMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Memberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel3Memberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel12And3Memberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:CarryingReportedAmountFairValueDisclosureMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel1Member2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:MortgageBackedSecuritiesMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel3Member2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueInputsLevel12And3Member2022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel1Member2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:USStatesAndPoliticalSubdivisionsMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel3Member2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel12And3Member2022-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Member2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:PortionAtOtherThanFairValueFairValueDisclosureMember2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel3Member2022-12-310000896159us-gaap:PortionAtOtherThanFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel12And3Member2022-12-310000896159us-gaap:CarryingReportedAmountFairValueDisclosureMember2022-12-310000896159cb:ReinsuranceLargestReinsurersMember2023-12-310000896159cb:ReinsuranceOtherReinsurersBalancesRatedMinusOrBetterMember2023-12-310000896159cb:ReinsuranceOtherReinsurersBalancesWithRatingsLowerThanMinusOrNotRatedMember2023-12-310000896159cb:ReinsuranceOtherPoolsAndGovernmentAgenciesMember2023-12-310000896159cb:ReinsuranceStructuredSettlementsMember2023-12-310000896159cb:ReinsuranceOtherCaptivesMember2023-12-310000896159cb:ReinsuranceOtherMember2023-12-310000896159us-gaap:OtherShortdurationInsuranceProductLineMember2023-12-310000896159us-gaap:OtherShortdurationInsuranceProductLineMember2022-12-310000896159us-gaap:OtherShortdurationInsuranceProductLineMember2021-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMember2023-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMember2022-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMember2021-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2022-12-310000896159cb:SegmentLifeMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2022-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2022-12-310000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMembercb:SegmentLifeMember2022-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2023-01-012023-12-310000896159cb:SegmentLifeMemberus-gaap:UniversalLifeMember2023-01-012023-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2023-01-012023-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2023-01-012023-12-310000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2023-01-012023-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMembercb:SegmentLifeMember2023-01-012023-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2023-12-310000896159cb:SegmentLifeMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2023-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2023-12-310000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMembercb:SegmentLifeMember2023-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:OtherLongdurationInsuranceProductLineMember2023-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2021-12-310000896159cb:SegmentLifeMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2021-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2021-12-310000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMembercb:SegmentLifeMember2021-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2022-01-012022-12-310000896159cb:SegmentLifeMemberus-gaap:UniversalLifeMember2022-01-012022-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2022-01-012022-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2022-01-012022-12-310000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2022-01-012022-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMembercb:SegmentLifeMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:OtherLongdurationInsuranceProductLineMember2022-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2020-12-310000896159cb:SegmentLifeMemberus-gaap:UniversalLifeMember2020-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2020-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2020-12-310000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2020-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMembercb:SegmentLifeMember2020-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMember2021-01-012021-12-310000896159cb:SegmentLifeMemberus-gaap:UniversalLifeMember2021-01-012021-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2021-01-012021-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2021-01-012021-12-310000896159cb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2021-01-012021-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMembercb:SegmentLifeMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:OtherLongdurationInsuranceProductLineMember2021-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMember2021-12-310000896159cb:SegmentInsuranceNorthAmericanPersonalPCMember2021-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMember2021-12-310000896159cb:SegmentInsuranceOverseasGeneralMember2021-12-310000896159cb:SegmentGlobalReinsuranceMember2021-12-310000896159cb:SegmentLifeMember2021-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembercb:SegmentNorthAmericaCommercialPCInsuranceMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembercb:SegmentInsuranceNorthAmericanAgricultureMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:CignasLifeInsuranceBusinessInAsianMarketsMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembercb:SegmentGlobalReinsuranceMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembercb:SegmentLifeMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMember2022-01-012022-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMember2022-01-012022-12-310000896159cb:SegmentInsuranceNorthAmericanPersonalPCMember2022-01-012022-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMember2022-01-012022-12-310000896159cb:SegmentGlobalReinsuranceMember2022-01-012022-12-310000896159cb:SegmentLifeMember2022-01-012022-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMember2022-12-310000896159cb:SegmentInsuranceNorthAmericanPersonalPCMember2022-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMember2022-12-310000896159cb:SegmentInsuranceOverseasGeneralMember2022-12-310000896159cb:SegmentGlobalReinsuranceMember2022-12-310000896159cb:SegmentLifeMember2022-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMember2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanPersonalPCMember2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMember2023-01-012023-12-310000896159cb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:SegmentLifeMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:HuataiGroupMember2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanPersonalPCMembercb:HuataiGroupMember2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMembercb:HuataiGroupMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:HuataiGroupMember2023-01-012023-12-310000896159cb:HuataiGroupMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:SegmentLifeMembercb:HuataiGroupMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMember2023-12-310000896159cb:SegmentInsuranceNorthAmericanPersonalPCMember2023-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMember2023-12-310000896159cb:SegmentInsuranceOverseasGeneralMember2023-12-310000896159cb:SegmentGlobalReinsuranceMember2023-12-310000896159cb:SegmentLifeMember2023-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMember2023-01-012023-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMember2021-01-012021-12-310000896159cb:HuataiGroupMember2022-01-012022-12-310000896159cb:HuataiGroupMember2021-01-012021-12-310000896159cb:ChubbAcquiredPurchasedIntangibleAssetsMember2023-12-310000896159cb:UnearnedPremiumReservesIntangibleAssetMembercb:HuataiGroupMember2023-12-310000896159us-gaap:UseRightsMembercb:HuataiGroupMember2023-12-310000896159cb:HuataiGroupMember2022-12-310000896159cb:HuataiGroupMember2021-12-310000896159cb:NorthAmericaWorkersCompensationMember2023-12-310000896159cb:NorthAmericaGeneralLiabilityMember2023-12-310000896159cb:NorthAmericaOtherCasualtyMember2023-12-310000896159cb:NorthAmericaNonCasualtyMember2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMember2023-12-310000896159cb:OverseasGeneralCasualtyMember2023-12-310000896159cb:OverseasGeneralNonCasualtyMember2023-12-310000896159cb:GlobalReinsuranceCasualtyMember2023-12-310000896159cb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159us-gaap:AllOtherSegmentsMember2023-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaWorkersCompensationMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaWorkersCompensationMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaWorkersCompensationMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaWorkersCompensationMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaWorkersCompensationMember2023-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaWorkersCompensationMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaWorkersCompensationMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaWorkersCompensationMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaWorkersCompensationMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaWorkersCompensationMember2023-12-310000896159cb:NorthAmericaWorkersCompensationMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:NorthAmericaWorkersCompensationMembercb:AccidentYearsPriorTo2014Member2023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaWorkersCompensationMember2023-12-310000896159cb:NorthAmericaWorkersCompensationMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaWorkersCompensationMember2023-01-012023-12-310000896159cb:NorthAmericaWorkersCompensationMember2023-01-012023-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaGeneralLiabilityMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaGeneralLiabilityMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaGeneralLiabilityMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaGeneralLiabilityMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaGeneralLiabilityMember2023-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaGeneralLiabilityMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaGeneralLiabilityMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaGeneralLiabilityMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaGeneralLiabilityMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaGeneralLiabilityMember2023-12-310000896159cb:NorthAmericaGeneralLiabilityMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:NorthAmericaGeneralLiabilityMember2023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaGeneralLiabilityMember2023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:NorthAmericaGeneralLiabilityMember2023-01-012023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaGeneralLiabilityMember2023-01-012023-12-310000896159cb:NorthAmericaGeneralLiabilityMember2023-01-012023-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaOtherCasualtyMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaOtherCasualtyMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaOtherCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaOtherCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaOtherCasualtyMember2023-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaOtherCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaOtherCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaOtherCasualtyMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaOtherCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaOtherCasualtyMember2023-12-310000896159cb:NorthAmericaOtherCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:NorthAmericaOtherCasualtyMembercb:AccidentYearsPriorTo2014Member2023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaOtherCasualtyMember2023-12-310000896159cb:NorthAmericaOtherCasualtyMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaOtherCasualtyMember2023-01-012023-12-310000896159cb:NorthAmericaOtherCasualtyMember2023-01-012023-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaNonCasualtyMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaNonCasualtyMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaNonCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaNonCasualtyMember2023-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaNonCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaNonCasualtyMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaNonCasualtyMember2023-12-310000896159cb:NorthAmericaNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:NorthAmericaNonCasualtyMembercb:AccidentYearsPriorTo2014Member2023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaNonCasualtyMember2023-12-310000896159cb:NorthAmericaNonCasualtyMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaNonCasualtyMember2023-01-012023-12-310000896159cb:NorthAmericaNonCasualtyMember2023-01-012023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaPersonalPCInsuranceMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaPersonalPCInsuranceMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaPersonalPCInsuranceMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaPersonalPCInsuranceMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:NorthAmericaPersonalPCInsuranceMember2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaPersonalPCInsuranceMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaPersonalPCInsuranceMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:NorthAmericaPersonalPCInsuranceMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaPersonalPCInsuranceMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:NorthAmericaPersonalPCInsuranceMember2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMembercb:AccidentYearsPriorTo2014Member2023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaPersonalPCInsuranceMember2023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:AccidentYears20142023Membercb:NorthAmericaPersonalPCInsuranceMember2023-01-012023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMember2023-01-012023-12-310000896159srt:EuropeMembercb:OverseasGeneralCasualtyMember2023-01-012023-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralCasualtyMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralCasualtyMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralCasualtyMember2023-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:OverseasGeneralCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:OverseasGeneralCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:OverseasGeneralCasualtyMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:OverseasGeneralCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:OverseasGeneralCasualtyMember2023-12-310000896159cb:OverseasGeneralCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:OverseasGeneralCasualtyMembercb:AccidentYearsPriorTo2014Member2023-12-310000896159cb:OverseasGeneralCasualtyMembercb:AccidentYears20142023Member2023-12-310000896159cb:OverseasGeneralCasualtyMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:OverseasGeneralCasualtyMembercb:AccidentYears20142023Member2023-01-012023-12-310000896159cb:OverseasGeneralCasualtyMember2023-01-012023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralNonCasualtyMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralNonCasualtyMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralNonCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:OverseasGeneralNonCasualtyMember2023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2021-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2022-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2021Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:OverseasGeneralNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:OverseasGeneralNonCasualtyMember2023-12-310000896159cb:OverseasGeneralNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMembercb:AccidentYearsPriorTo2014Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMembercb:AccidentYears20142023Member2023-12-310000896159cb:OverseasGeneralNonCasualtyMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:OverseasGeneralNonCasualtyMembercb:AccidentYears20142023Member2023-01-012023-12-310000896159cb:OverseasGeneralNonCasualtyMember2023-01-012023-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2014-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2015-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2016-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2017-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2018-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2019-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2020-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2021-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2022-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2014Member2023-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceCasualtyMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceCasualtyMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceCasualtyMember2023-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:GlobalReinsuranceCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:GlobalReinsuranceCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:GlobalReinsuranceCasualtyMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:GlobalReinsuranceCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:GlobalReinsuranceCasualtyMember2023-12-310000896159cb:GlobalReinsuranceCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2023Member2023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:GlobalReinsuranceCasualtyMember2023-12-310000896159cb:AccidentYears20142023Membercb:GlobalReinsuranceCasualtyMember2023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:GlobalReinsuranceCasualtyMember2023-01-012023-12-310000896159cb:AccidentYears20142023Membercb:GlobalReinsuranceCasualtyMember2023-01-012023-12-310000896159cb:GlobalReinsuranceCasualtyMember2023-01-012023-12-310000896159cb:AccidentYear2013AndAfterMembercb:GlobalReinsuranceNonCasualtyMember2023-01-012023-12-310000896159cb:AccidentYears20132017Membercb:GlobalReinsuranceNonCasualtyMember2023-01-012023-12-310000896159cb:AccidentYear2018To2022Membercb:GlobalReinsuranceNonCasualtyMember2023-01-012023-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2014-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2015-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2016-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2017-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2018-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2019-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2020-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2021-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2022-12-310000896159us-gaap:ShortdurationInsuranceContractsAccidentYear2014Membercb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2015-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2016-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2017-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2018-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2019-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2020-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2021-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2022-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2015Member2023-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2016-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2017-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2018-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2019-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2020-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2021-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2022-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortdurationInsuranceContractsAccidentYear2016Member2023-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2017-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2018-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2019-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2020-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2021-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2022-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2017Member2023-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2018-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2019-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2020-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2021-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2022-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractsAccidentYear2018Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceNonCasualtyMember2019-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceNonCasualtyMember2020-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceNonCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2019Membercb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2020-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2021-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2022-12-310000896159cb:GlobalReinsuranceNonCasualtyMemberus-gaap:ShortDurationInsuranceContractAccidentYear2020Member2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:GlobalReinsuranceNonCasualtyMember2021-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:GlobalReinsuranceNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2021Membercb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:GlobalReinsuranceNonCasualtyMember2022-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2022Membercb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159us-gaap:ShortDurationInsuranceContractAccidentYear2023Membercb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159cb:AccidentYears20142023Membercb:GlobalReinsuranceNonCasualtyMember2023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:GlobalReinsuranceNonCasualtyMember2023-01-012023-12-310000896159cb:AccidentYears20142023Membercb:GlobalReinsuranceNonCasualtyMember2023-01-012023-12-310000896159cb:GlobalReinsuranceNonCasualtyMember2023-01-012023-12-310000896159cb:LongTailMembercb:SegmentNorthAmericaCommercialPCInsuranceMembercb:A20142022AccidentYearsMember2023-01-012023-12-310000896159cb:LongTailMembercb:SegmentNorthAmericaCommercialPCInsuranceMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:LongTailMembercb:SegmentNorthAmericaCommercialPCInsuranceMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:A20142022AccidentYearsMembercb:ShortTailMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:AccidentYearsPriorTo2014Membercb:ShortTailMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:ShortTailMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:A20142022AccidentYearsMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMembercb:A20142022AccidentYearsMembercb:ShortTailMember2023-01-012023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMembercb:AccidentYearsPriorTo2014Membercb:ShortTailMember2023-01-012023-12-310000896159cb:NorthAmericaPersonalPCInsuranceMembercb:ShortTailMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:LongTailMembercb:A20142022AccidentYearsMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:LongTailMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:LongTailMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:A20142022AccidentYearsMembercb:ShortTailMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:AccidentYearsPriorTo2014Membercb:ShortTailMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:ShortTailMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:A20142022AccidentYearsMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:AccidentYearsPriorTo2014Member2023-01-012023-12-310000896159cb:LongTailMembercb:A20142022AccidentYearsMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:LongTailMembercb:AccidentYearsPriorTo2014Membercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:LongTailMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:A20142022AccidentYearsMembercb:ShortTailMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:ShortTailMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:ShortTailMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:A20142022AccidentYearsMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:SegmentsincludedinlosstrianglesDomaincb:A20142022AccidentYearsMember2023-01-012023-12-310000896159cb:AccidentYearsPriorTo2014Membercb:SegmentsincludedinlosstrianglesDomain2023-01-012023-12-310000896159cb:SegmentsincludedinlosstrianglesDomain2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMembercb:ShortTailMember2023-01-012023-12-310000896159cb:LongTailMemberus-gaap:CorporateMember2023-01-012023-12-310000896159us-gaap:CorporateMember2023-01-012023-12-310000896159cb:AlternativeRiskSolutionsMember2023-01-012023-12-310000896159cb:NorthAmericaWorkersCompensationMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:InternationalAHMember2023-01-012023-12-310000896159cb:LongTailMembercb:NorthAmericaPersonalPCInsuranceMember2023-01-012023-12-310000896159cb:LongTailMembercb:SegmentInsuranceNorthAmericanAgricultureMember2023-01-012023-12-310000896159us-gaap:CorporateMembercb:ShortTailMember2023-01-012023-12-310000896159us-gaap:CorporateMember2023-12-310000896159cb:LongTailMember2023-01-012023-12-310000896159cb:ShortTailMember2023-01-012023-12-310000896159cb:LongTailMembercb:SegmentNorthAmericaCommercialPCInsuranceMember2022-01-012022-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:ShortTailMember2022-01-012022-12-310000896159cb:LongTailMembercb:NorthAmericaPersonalPCInsuranceMember2022-01-012022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMembercb:ShortTailMember2022-01-012022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMember2022-01-012022-12-310000896159cb:NorthAmericaPersonalPCInsuranceMember2022-12-310000896159cb:LongTailMembercb:SegmentInsuranceNorthAmericanAgricultureMember2022-01-012022-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMembercb:ShortTailMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:LongTailMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:ShortTailMember2022-01-012022-12-310000896159cb:LongTailMembercb:SegmentGlobalReinsuranceMember2022-01-012022-12-310000896159cb:ShortTailMembercb:SegmentGlobalReinsuranceMember2022-01-012022-12-310000896159cb:LongTailMemberus-gaap:CorporateMember2022-01-012022-12-310000896159us-gaap:CorporateMembercb:ShortTailMember2022-01-012022-12-310000896159us-gaap:CorporateMember2022-01-012022-12-310000896159us-gaap:CorporateMember2022-12-310000896159cb:LongTailMember2022-01-012022-12-310000896159cb:ShortTailMember2022-01-012022-12-310000896159cb:LongTailMembercb:SegmentNorthAmericaCommercialPCInsuranceMember2021-01-012021-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:ShortTailMember2021-01-012021-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMember2021-01-012021-12-310000896159cb:LongTailMembercb:NorthAmericaPersonalPCInsuranceMember2021-01-012021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMembercb:ShortTailMember2021-01-012021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMember2021-01-012021-12-310000896159cb:NorthAmericaPersonalPCInsuranceMember2021-12-310000896159cb:LongTailMembercb:SegmentInsuranceNorthAmericanAgricultureMember2021-01-012021-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMembercb:ShortTailMember2021-01-012021-12-310000896159cb:SegmentInsuranceNorthAmericanAgricultureMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:LongTailMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:ShortTailMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMember2021-01-012021-12-310000896159cb:LongTailMembercb:SegmentGlobalReinsuranceMember2021-01-012021-12-310000896159cb:ShortTailMembercb:SegmentGlobalReinsuranceMember2021-01-012021-12-310000896159cb:SegmentGlobalReinsuranceMember2021-01-012021-12-310000896159cb:LongTailMemberus-gaap:CorporateMember2021-01-012021-12-310000896159us-gaap:CorporateMembercb:ShortTailMember2021-01-012021-12-310000896159us-gaap:CorporateMember2021-01-012021-12-310000896159us-gaap:CorporateMember2021-12-310000896159cb:LongTailMember2021-01-012021-12-310000896159cb:ShortTailMember2021-01-012021-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMemberus-gaap:WorkersCompensationInsuranceMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:PropertyAndInlandMarineMember2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanCommercialPCMemberus-gaap:SuretySegmentMember2023-01-012023-12-310000896159cb:CommercialExcessandUmbrellaMembercb:SegmentInsuranceNorthAmericanCommercialPCMember2023-01-012023-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:AutoLiabilityMember2023-01-012023-12-310000896159cb:LongTailMembercb:SegmentNorthAmericaCommercialPCInsuranceMemberus-gaap:WorkersCompensationInsuranceMember2022-01-012022-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:AutoLiabilityMember2022-01-012022-12-310000896159cb:CommercialExcessandUmbrellaMembercb:SegmentNorthAmericaCommercialPCInsuranceMember2022-01-012022-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:MedicalPortfoliosMember2022-01-012022-12-310000896159cb:SegmentNorthAmericaCommercialPCInsuranceMembercb:ShortTailMembercb:PropertyAndInlandMarineMember2022-01-012022-12-310000896159cb:HomeownersAndValuablesMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2023-01-012023-12-310000896159cb:PersonalExcessLiabilityMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:PropertyAndInlandMarineMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:ProfessionalLinesMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:PropertyLiabilityAndCasualtyInsuranceSegmentMember2022-01-012022-12-310000896159cb:AsbestosEnvironmentalMembercb:LongTailMemberus-gaap:CorporateMember2023-01-012023-12-310000896159cb:AsbestosEnvironmentalMembercb:LongTailMemberus-gaap:CorporateMember2022-01-012022-12-310000896159cb:AsbestosEnvironmentalMembercb:LongTailMemberus-gaap:CorporateMember2021-01-012021-12-310000896159cb:LongTailMembercb:OtherMemberus-gaap:CorporateMember2023-01-012023-12-310000896159cb:LongTailMembercb:OtherMemberus-gaap:CorporateMember2022-01-012022-12-310000896159cb:LongTailMembercb:OtherMemberus-gaap:CorporateMember2021-01-012021-12-310000896159cb:BoyScoutsOfAmericaAgreementInPrincipleMember2022-12-310000896159cb:BoyScoutsOfAmericaAgreementInPrincipleMember2023-01-012023-12-310000896159cb:BoyScoutsOfAmericaAgreementInPrincipleMember2023-12-310000896159us-gaap:AsbestosIssueMember2020-12-310000896159us-gaap:EnvironmentalIssueMember2020-12-310000896159us-gaap:AsbestosIssueMember2021-01-012021-12-310000896159us-gaap:EnvironmentalIssueMember2021-01-012021-12-310000896159us-gaap:AsbestosIssueMember2021-12-310000896159us-gaap:EnvironmentalIssueMember2021-12-310000896159us-gaap:AsbestosIssueMember2022-01-012022-12-310000896159us-gaap:EnvironmentalIssueMember2022-01-012022-12-310000896159us-gaap:AsbestosIssueMember2022-12-310000896159us-gaap:EnvironmentalIssueMember2022-12-310000896159us-gaap:AsbestosIssueMember2023-01-012023-12-310000896159us-gaap:EnvironmentalIssueMember2023-01-012023-12-310000896159us-gaap:AsbestosIssueMember2023-12-310000896159us-gaap:EnvironmentalIssueMember2023-12-310000896159cb:BrandywineMember2023-12-310000896159cb:BrandywineMember2022-12-310000896159cb:WestchesterSpecialtyMember2023-12-310000896159cb:WestchesterSpecialtyMember2022-12-310000896159cb:TheChubbCorporationMember2023-12-310000896159cb:TheChubbCorporationMember2022-12-310000896159us-gaap:AllOtherSegmentsMember2022-12-310000896159cb:BrandywineRunoffMember2023-12-310000896159cb:BrandywineRunoffMember2022-12-310000896159cb:BrandywineRunoffMember2004-12-310000896159cb:BrandywineRunoffMember2023-01-012023-12-310000896159cb:WestchesterandBrandywineRunoffMember2023-12-310000896159us-gaap:TermLifeInsuranceMembercb:SegmentLifeMembercb:HuataiGroupMember2023-01-012023-12-310000896159us-gaap:WholeLifeInsuranceMembercb:SegmentLifeMembercb:HuataiGroupMember2023-01-012023-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMembercb:HuataiGroupMember2023-01-012023-12-310000896159cb:SegmentLifeMembercb:HuataiGroupMemberus-gaap:OtherInsuranceProductLineMember2023-01-012023-12-310000896159us-gaap:TermLifeInsuranceMembercb:CignasLifeInsuranceBusinessInAsianMarketsMembercb:SegmentLifeMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMemberus-gaap:WholeLifeInsuranceMembercb:SegmentLifeMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMemberus-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMembercb:SegmentLifeMemberus-gaap:OtherInsuranceProductLineMember2022-01-012022-12-310000896159cb:SegmentLifeMember2020-12-310000896159cb:SegmentLifeMember2021-01-012021-12-310000896159us-gaap:AllOtherSegmentsMember2021-12-310000896159us-gaap:UniversalLifeMember2022-12-310000896159cb:AnnuitiesMember2022-12-310000896159us-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:UniversalLifeMembercb:HuataiGroupMember2023-01-012023-12-310000896159cb:HuataiGroupMembercb:AnnuitiesMember2023-01-012023-12-310000896159cb:HuataiGroupMemberus-gaap:OtherInsuranceProductLineMember2023-01-012023-12-310000896159us-gaap:UniversalLifeMember2023-01-012023-12-310000896159cb:AnnuitiesMember2023-01-012023-12-310000896159us-gaap:OtherInsuranceProductLineMember2023-01-012023-12-310000896159us-gaap:UniversalLifeMember2023-12-310000896159cb:AnnuitiesMember2023-12-310000896159us-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:UniversalLifeMember2021-12-310000896159us-gaap:OtherInsuranceProductLineMember2021-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMemberus-gaap:UniversalLifeMember2022-01-012022-12-310000896159cb:CignasLifeInsuranceBusinessInAsianMarketsMemberus-gaap:OtherInsuranceProductLineMember2022-01-012022-12-310000896159us-gaap:UniversalLifeMember2022-01-012022-12-310000896159us-gaap:OtherInsuranceProductLineMember2022-01-012022-12-310000896159us-gaap:UniversalLifeMember2020-12-310000896159us-gaap:OtherInsuranceProductLineMember2020-12-310000896159us-gaap:UniversalLifeMember2021-01-012021-12-310000896159us-gaap:OtherInsuranceProductLineMember2021-01-012021-12-310000896159srt:MaximumMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2023-12-310000896159us-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2023-12-310000896159srt:MinimumMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Member2023-12-310000896159srt:MaximumMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Member2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:UniversalLifeMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:UniversalLifeMember2023-12-310000896159srt:MinimumMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2022-12-310000896159us-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:UniversalLifeMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2021-12-310000896159us-gaap:UniversalLifeMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Member2021-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:UniversalLifeMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:UniversalLifeMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Membercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Membercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Membercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Membercb:AnnuitiesMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Membercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Membercb:AnnuitiesMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membercb:AnnuitiesMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membercb:AnnuitiesMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembercb:AnnuitiesMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Membercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembercb:AnnuitiesMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2023-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2022-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Membercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeUpTo0200Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMembercb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159cb:PolicyholderAccountBalanceGuaranteedMinimumCreditRatingRangeFrom0201To0400Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceGuaranteedMinimumCreditingRateRangeFrom0400AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAtGuaranteedMinimumCreditingRateMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0001To0050Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0051To0150Memberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:PolicyholderAccountBalanceAboveGuaranteedMinimumCreditingRateRangeFrom0151AndGreaterMemberus-gaap:OtherInsuranceProductLineMember2021-12-310000896159us-gaap:SeparateAccountCashAndCashEquivalentsMember2023-12-310000896159us-gaap:SeparateAccountCashAndCashEquivalentsMember2022-12-310000896159us-gaap:SeparateAccountCashAndCashEquivalentsMember2021-12-310000896159cb:SeparateAccountEquitySecuritiesAndMutualFundsMember2023-12-310000896159cb:SeparateAccountEquitySecuritiesAndMutualFundsMember2022-12-310000896159cb:SeparateAccountEquitySecuritiesAndMutualFundsMember2021-12-310000896159cb:SeparateAccountNonUSGovernmentTreasuriesMember2023-12-310000896159cb:SeparateAccountNonUSGovernmentTreasuriesMember2022-12-310000896159cb:SeparateAccountNonUSGovernmentTreasuriesMember2021-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2022-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2021-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2020-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2023-01-012023-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2022-01-012022-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2021-01-012021-12-310000896159us-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2023-12-310000896159cb:MeasurementInputAnnuitizationRateMemberus-gaap:OtherLongdurationInsuranceProductLineMemberus-gaap:VariableAnnuityMember2023-10-012023-12-310000896159srt:WeightedAverageMember2023-12-310000896159srt:MinimumMember2022-12-310000896159srt:MaximumMember2022-12-310000896159srt:WeightedAverageMember2022-12-310000896159srt:MinimumMember2021-12-310000896159srt:MaximumMember2021-12-310000896159srt:WeightedAverageMember2021-12-310000896159srt:WeightedAverageMember2023-01-012023-12-310000896159srt:MinimumMember2022-01-012022-12-310000896159srt:MaximumMember2022-01-012022-12-310000896159srt:WeightedAverageMember2022-01-012022-12-310000896159srt:MinimumMember2021-01-012021-12-310000896159srt:MaximumMember2021-01-012021-12-310000896159srt:WeightedAverageMember2021-01-012021-12-310000896159us-gaap:DomesticCountryMember2023-01-012023-12-310000896159us-gaap:DomesticCountryMember2022-01-012022-12-310000896159us-gaap:DomesticCountryMember2021-01-012021-12-310000896159us-gaap:ForeignCountryMember2023-01-012023-12-310000896159us-gaap:ForeignCountryMember2022-01-012022-12-310000896159us-gaap:ForeignCountryMember2021-01-012021-12-310000896159country:CH2023-01-012023-12-310000896159country:US2023-01-012023-12-310000896159country:GB2023-01-012023-12-310000896159country:BM2023-01-012023-12-310000896159us-gaap:InvestmentsMember2023-12-310000896159us-gaap:DomesticCountryMember2023-12-310000896159country:AUus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:AUus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159country:BRus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:BRus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159us-gaap:EarliestTaxYearMembercountry:CA2023-01-012023-12-310000896159us-gaap:LatestTaxYearMembercountry:CA2023-01-012023-12-310000896159us-gaap:EarliestTaxYearMembercountry:CN2023-01-012023-12-310000896159us-gaap:LatestTaxYearMembercountry:CN2023-01-012023-12-310000896159country:FRus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:FRus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159country:DEus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:DEus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159country:ITus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:ITus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159country:KRus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:KRus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159country:MXus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:MXus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159us-gaap:EarliestTaxYearMembercountry:ES2023-01-012023-12-310000896159us-gaap:LatestTaxYearMembercountry:ES2023-01-012023-12-310000896159country:CHus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159us-gaap:LatestTaxYearMembercountry:CH2023-01-012023-12-310000896159country:GBus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:GBus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159country:USus-gaap:EarliestTaxYearMember2023-01-012023-12-310000896159country:USus-gaap:LatestTaxYearMember2023-01-012023-12-310000896159us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2023-12-310000896159us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMember2022-12-310000896159us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2023-12-310000896159us-gaap:SecuritiesSoldUnderAgreementsToRepurchaseMemberus-gaap:VariableInterestEntityPrimaryBeneficiaryMember2022-12-310000896159cb:INASeniorNotesDueMarch2023Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueMarch2023Memberus-gaap:SeniorNotesMember2022-12-310000896159cb:INASeniorNotesDueMay2024Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueMay2024Memberus-gaap:SeniorNotesMember2022-12-310000896159cb:INASeniorNotesDueDecember2024Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueDecember2024Memberus-gaap:SeniorNotesMember2022-12-310000896159cb:INASeniorNotesDueMay2024Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueMay2024Memberus-gaap:SeniorNotesMember2022-12-310000896159cb:INASeniorNotesDueDecember2024Memberus-gaap:SeniorNotesMember2023-12-31iso4217:EUR0000896159cb:INASeniorNotesDueDecember2024Memberus-gaap:SeniorNotesMember2022-12-310000896159cb:INASeniorNotesDueMarch2025Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueMarch2025Memberus-gaap:SeniorNotesMember2022-12-310000896159cb:INASeniorNotesDueMay2026Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueMay2026Memberus-gaap:SeniorNotesMember2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueJune2027Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueJune2027Member2022-12-310000896159cb:INASeniorNotesDueMarch2028Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueMarch2028Memberus-gaap:SeniorNotesMember2022-12-310000896159us-gaap:UnsecuredDebtMembercb:INADebenturesDueAugust2029Member2023-12-310000896159us-gaap:UnsecuredDebtMembercb:INADebenturesDueAugust2029Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueDecember2029Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueDecember2029Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueSeptember2030Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueSeptember2030Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueJune2031Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueJune2031Member2022-12-310000896159us-gaap:UnsecuredDebtMembercb:INADebenturesDueNovember2031Member2023-12-310000896159us-gaap:UnsecuredDebtMembercb:INADebenturesDueNovember2031Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMay2036Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMay2036Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMay2037Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMay2037Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMarch2038Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMarch2038Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMay2038Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMay2038Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMarch2043Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueMarch2043Member2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueNovember2045Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueNovember2045Member2022-12-310000896159cb:INASeniorNotesDueDecember2051Memberus-gaap:SeniorNotesMember2023-12-310000896159cb:INASeniorNotesDueDecember2051Memberus-gaap:SeniorNotesMember2022-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueDecember2061Member2023-12-310000896159us-gaap:SeniorNotesMembercb:INASeniorNotesDueDecember2061Member2022-12-310000896159cb:AceInaCapitalSecuritiesDue2030Memberus-gaap:TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember2023-12-310000896159cb:AceInaCapitalSecuritiesDue2030Memberus-gaap:TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember2022-12-310000896159cb:HuataiGroupMember2023-07-010000896159us-gaap:VariableInterestEntityPrimaryBeneficiaryMembercb:HuataiGroupMember2023-12-310000896159cb:AceInaCapitalSecuritiesDue2030Memberus-gaap:TrustPreferredSecuritiesSubjectToMandatoryRedemptionMember2000-03-310000896159us-gaap:ForeignExchangeFutureMemberus-gaap:OtherAssetsMember2023-12-310000896159us-gaap:ForeignExchangeFutureMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2023-12-310000896159us-gaap:ForeignExchangeFutureMember2023-12-310000896159us-gaap:ForeignExchangeFutureMemberus-gaap:OtherAssetsMember2022-12-310000896159us-gaap:ForeignExchangeFutureMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2022-12-310000896159us-gaap:ForeignExchangeFutureMember2022-12-310000896159us-gaap:FutureMemberus-gaap:OtherAssetsMember2023-12-310000896159us-gaap:FutureMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2023-12-310000896159us-gaap:FutureMember2023-12-310000896159us-gaap:FutureMemberus-gaap:OtherAssetsMember2022-12-310000896159us-gaap:FutureMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2022-12-310000896159us-gaap:FutureMember2022-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMemberus-gaap:FixedMaturitiesMember2023-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMemberus-gaap:EquitySecuritiesMember2023-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMember2023-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMemberus-gaap:FixedMaturitiesMember2022-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMemberus-gaap:EquitySecuritiesMember2022-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMember2022-12-310000896159cb:InvestmentAndEmbeddedDerivativeInstrumentsMember2023-12-310000896159cb:InvestmentAndEmbeddedDerivativeInstrumentsMember2022-12-310000896159us-gaap:SingleStockFutureMemberus-gaap:OtherAssetsMember2023-12-310000896159us-gaap:SingleStockFutureMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2023-12-310000896159us-gaap:SingleStockFutureMember2023-12-310000896159us-gaap:SingleStockFutureMemberus-gaap:OtherAssetsMember2022-12-310000896159us-gaap:SingleStockFutureMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2022-12-310000896159us-gaap:SingleStockFutureMember2022-12-310000896159cb:OtherDerivativesMemberus-gaap:OtherAssetsMember2023-12-310000896159cb:OtherDerivativesMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2023-12-310000896159cb:OtherDerivativesMember2023-12-310000896159cb:OtherDerivativesMemberus-gaap:OtherAssetsMember2022-12-310000896159cb:OtherDerivativesMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2022-12-310000896159cb:OtherDerivativesMember2022-12-310000896159cb:OtherDerivativesTotalMemberus-gaap:OtherAssetsMember2023-12-310000896159cb:OtherDerivativesTotalMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2023-12-310000896159cb:OtherDerivativesTotalMember2023-12-310000896159cb:OtherDerivativesTotalMemberus-gaap:OtherAssetsMember2022-12-310000896159cb:OtherDerivativesTotalMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2022-12-310000896159cb:OtherDerivativesTotalMember2022-12-310000896159us-gaap:FairValueHedgingMemberus-gaap:OtherAssetsMember2023-12-310000896159us-gaap:AccountsPayableAndAccruedLiabilitiesMemberus-gaap:FairValueHedgingMember2023-12-310000896159us-gaap:FairValueHedgingMember2023-12-310000896159us-gaap:FairValueHedgingMemberus-gaap:OtherAssetsMember2022-12-310000896159us-gaap:AccountsPayableAndAccruedLiabilitiesMemberus-gaap:FairValueHedgingMember2022-12-310000896159us-gaap:FairValueHedgingMember2022-12-310000896159us-gaap:NetInvestmentHedgingMemberus-gaap:OtherAssetsMember2023-12-310000896159us-gaap:NetInvestmentHedgingMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2023-12-310000896159us-gaap:NetInvestmentHedgingMember2023-12-310000896159us-gaap:NetInvestmentHedgingMemberus-gaap:OtherAssetsMember2022-12-310000896159us-gaap:NetInvestmentHedgingMemberus-gaap:AccountsPayableAndAccruedLiabilitiesMember2022-12-310000896159us-gaap:NetInvestmentHedgingMember2022-12-310000896159us-gaap:DesignatedAsHedgingInstrumentMember2023-12-310000896159us-gaap:DesignatedAsHedgingInstrumentMember2022-12-310000896159us-gaap:LongTermDebtMember2023-12-310000896159us-gaap:FairValueHedgingMember2023-01-012023-12-310000896159us-gaap:FairValueHedgingMember2022-01-012022-12-310000896159us-gaap:FairValueHedgingMember2023-01-012023-12-310000896159us-gaap:FairValueHedgingMember2022-01-012022-12-310000896159us-gaap:NetInvestmentHedgingMember2023-01-012023-12-310000896159us-gaap:NetInvestmentHedgingMember2022-01-012022-12-310000896159us-gaap:NetInvestmentHedgingMember2023-01-012023-12-310000896159us-gaap:NetInvestmentHedgingMember2022-01-012022-12-310000896159us-gaap:ForeignExchangeFutureMember2023-01-012023-12-310000896159us-gaap:ForeignExchangeFutureMember2022-01-012022-12-310000896159us-gaap:ForeignExchangeFutureMember2021-01-012021-12-310000896159cb:OtherFuturesContractsAndOptionsMember2023-01-012023-12-310000896159cb:OtherFuturesContractsAndOptionsMember2022-01-012022-12-310000896159cb:OtherFuturesContractsAndOptionsMember2021-01-012021-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMember2023-01-012023-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMember2022-01-012022-12-310000896159us-gaap:ConvertiblesAndBondsWithWarrantsAttachedMember2021-01-012021-12-310000896159cb:InvestmentAndEmbeddedDerivativeInstrumentsMember2023-01-012023-12-310000896159cb:InvestmentAndEmbeddedDerivativeInstrumentsMember2022-01-012022-12-310000896159cb:InvestmentAndEmbeddedDerivativeInstrumentsMember2021-01-012021-12-310000896159us-gaap:SingleStockFutureMember2023-01-012023-12-310000896159us-gaap:SingleStockFutureMember2022-01-012022-12-310000896159us-gaap:SingleStockFutureMember2021-01-012021-12-310000896159cb:OtherDerivativesMember2023-01-012023-12-310000896159cb:OtherDerivativesMember2022-01-012022-12-310000896159cb:OtherDerivativesMember2021-01-012021-12-310000896159cb:GuaranteedLivingBenefitAndOtherDerivativeInstrumentsMember2023-01-012023-12-310000896159cb:GuaranteedLivingBenefitAndOtherDerivativeInstrumentsMember2022-01-012022-12-310000896159cb:GuaranteedLivingBenefitAndOtherDerivativeInstrumentsMember2021-01-012021-12-310000896159us-gaap:MaturityOvernightMemberus-gaap:CashAndCashEquivalentsMember2023-12-310000896159us-gaap:MaturityOvernightMemberus-gaap:CashAndCashEquivalentsMember2022-12-310000896159us-gaap:MaturityOvernightMemberus-gaap:USTreasuryAndGovernmentMember2023-12-310000896159us-gaap:MaturityOvernightMemberus-gaap:USTreasuryAndGovernmentMember2022-12-310000896159us-gaap:ForeignGovernmentDebtMemberus-gaap:MaturityOvernightMember2023-12-310000896159us-gaap:ForeignGovernmentDebtMemberus-gaap:MaturityOvernightMember2022-12-310000896159us-gaap:MaturityOvernightMemberus-gaap:CorporateDebtSecuritiesMember2023-12-310000896159us-gaap:MaturityOvernightMemberus-gaap:CorporateDebtSecuritiesMember2022-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:MaturityOvernightMember2023-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:MaturityOvernightMember2022-12-310000896159us-gaap:EquitySecuritiesMemberus-gaap:MaturityOvernightMember2023-12-310000896159us-gaap:EquitySecuritiesMemberus-gaap:MaturityOvernightMember2022-12-310000896159us-gaap:CashAndCashEquivalentsMemberus-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:CashAndCashEquivalentsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MaturityOver90DaysMemberus-gaap:CashAndCashEquivalentsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:CashAndCashEquivalentsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:CashAndCashEquivalentsMemberus-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:CashAndCashEquivalentsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:CashAndCashEquivalentsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:NonUsMemberus-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:NonUsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MaturityOver90DaysMemberus-gaap:NonUsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:NonUsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:NonUsMemberus-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:NonUsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:NonUsMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:MaturityUpTo30DaysMemberus-gaap:USTreasuryAndGovernmentMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:USTreasuryAndGovernmentMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MaturityOver90DaysMemberus-gaap:USTreasuryAndGovernmentMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:USTreasuryAndGovernmentMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MaturityUpTo30DaysMemberus-gaap:USTreasuryAndGovernmentMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:USTreasuryAndGovernmentMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:USTreasuryAndGovernmentMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:MortgageBackedSecuritiesMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MaturityOver90DaysMemberus-gaap:MortgageBackedSecuritiesMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:MortgageBackedSecuritiesMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2023-12-310000896159us-gaap:MaturityOver90DaysMember2023-12-310000896159us-gaap:MaturityUpTo30DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:Maturity30To90DaysMemberus-gaap:AssetPledgedAsCollateralWithoutRightMember2022-12-310000896159us-gaap:RepurchaseAgreementsMember2023-12-310000896159us-gaap:RepurchaseAgreementsMember2022-12-310000896159us-gaap:SalesRevenueNetMember2023-01-012023-12-310000896159us-gaap:LetterOfCreditMember2023-12-310000896159us-gaap:LetterOfCreditMember2022-12-3100008961592023-05-1900008961592022-05-3100008961592021-05-310000896159currency:CHF2023-01-012023-12-310000896159currency:USD2023-01-012023-12-310000896159currency:CHF2022-01-012022-12-310000896159currency:USD2022-01-012022-12-310000896159currency:CHF2021-01-012021-12-310000896159currency:USD2021-01-012021-12-3100008961592023-05-222023-05-2200008961592022-08-042022-08-0400008961592022-01-172022-01-1700008961592021-08-042021-08-040000896159cb:GeneralPurposeMember2023-12-310000896159cb:IssuanceofDebt1Member2023-12-310000896159cb:EmployeeBenefitPlansMember2023-12-310000896159cb:Nov2020StockRepurchasePlanMember2020-11-190000896159cb:Nov2020StockRepurchasePlanMember2021-02-010000896159cb:A2021StockRepurchasePlanMember2021-07-190000896159cb:A2022StockRepurchasePlanMember2022-05-190000896159cb:July2023StockRepurchasePlanMember2022-05-190000896159cb:July2023StockRepurchasePlanMember2023-01-012023-12-310000896159cb:A2022StockRepurchasePlanMember2022-01-012022-12-310000896159cb:A2021StockRepurchasePlanMember2021-01-012021-12-310000896159us-gaap:SubsequentEventMembercb:July2023StockRepurchasePlanMember2024-01-012024-02-220000896159us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2022-12-310000896159us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2021-12-310000896159us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2020-12-310000896159us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedNetInvestmentGainLossAttributableToNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedNetInvestmentGainLossAttributableToNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedNetInvestmentGainLossAttributableToNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMember2023-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMember2022-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMember2021-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMember2020-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2022-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2021-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustmentMember2020-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2022-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2021-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMembersrt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember2020-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitIncludingNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitIncludingNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitIncludingNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AociLiabilityForFuturePolicyBenefitParentMember2023-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2022-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2021-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2020-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2022-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2021-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2020-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2022-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2021-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2020-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskIncludingNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskIncludingNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskIncludingNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AociMarketRiskBenefitInstrumentSpecificCreditRiskParentMember2023-12-310000896159us-gaap:AccumulatedTranslationAdjustmentMember2022-12-310000896159us-gaap:AccumulatedTranslationAdjustmentMember2021-12-310000896159us-gaap:AccumulatedTranslationAdjustmentMember2020-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AccumulatedTranslationAdjustmentMember2022-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AccumulatedTranslationAdjustmentMember2021-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustmentMemberus-gaap:AccumulatedTranslationAdjustmentMember2020-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:AccumulatedTranslationAdjustmentMember2022-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:AccumulatedTranslationAdjustmentMember2021-12-310000896159srt:CumulativeEffectPeriodOfAdoptionAdjustedBalanceMemberus-gaap:AccumulatedTranslationAdjustmentMember2020-12-310000896159us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedForeignCurrencyAdjustmentAttributableToNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedForeignCurrencyAdjustmentAttributableToNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedForeignCurrencyAdjustmentAttributableToNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedTranslationAdjustmentMember2023-12-310000896159us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-12-310000896159us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-12-310000896159us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2020-12-310000896159us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedNetGainLossFromCashFlowHedgesAttributableToNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedNetGainLossFromCashFlowHedgesAttributableToNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedNetGainLossFromCashFlowHedgesAttributableToNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2023-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2022-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2021-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2020-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember2023-01-012023-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember2022-01-012022-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentAttributableToNoncontrollingInterestMember2021-01-012021-12-310000896159us-gaap:AccumulatedDefinedBenefitPlansAdjustmentMember2023-12-310000896159us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000896159us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000896159us-gaap:AccumulatedNetUnrealizedInvestmentGainLossMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000896159us-gaap:AccumulatedTranslationAdjustmentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000896159us-gaap:AccumulatedTranslationAdjustmentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000896159us-gaap:AccumulatedTranslationAdjustmentMemberus-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000896159us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2023-01-012023-12-310000896159us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2022-01-012022-12-310000896159us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMemberus-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2021-01-012021-12-310000896159us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2023-01-012023-12-310000896159us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2022-01-012022-12-310000896159us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeMember2021-01-012021-12-310000896159us-gaap:PerformanceSharesMember2023-01-012023-12-310000896159cb:ChubbLimited2016LongTermIncentivePlanAmendedAndRestatedMemberus-gaap:CommonStockMember2023-12-310000896159us-gaap:CommonStockMemberus-gaap:EmployeeStockMember2023-12-310000896159us-gaap:EmployeeStockOptionMember2023-01-012023-12-310000896159us-gaap:EmployeeStockOptionMember2022-01-012022-12-310000896159us-gaap:EmployeeStockOptionMember2021-01-012021-12-310000896159us-gaap:RestrictedStockMember2023-01-012023-12-310000896159us-gaap:RestrictedStockMember2022-01-012022-12-310000896159us-gaap:RestrictedStockMember2021-01-012021-12-310000896159cb:ChubbLimited2016LongTermIncentivePlanAmendedAndRestatedMemberus-gaap:RestrictedStockMember2023-01-012023-12-310000896159us-gaap:RestrictedStockMember2020-12-310000896159us-gaap:PerformanceSharesMember2020-12-310000896159us-gaap:PerformanceSharesMember2021-01-012021-12-310000896159us-gaap:RestrictedStockMember2021-12-310000896159us-gaap:PerformanceSharesMember2021-12-310000896159us-gaap:PerformanceSharesMember2022-01-012022-12-310000896159us-gaap:RestrictedStockMember2022-12-310000896159us-gaap:PerformanceSharesMember2022-12-310000896159us-gaap:RestrictedStockMember2023-12-310000896159us-gaap:PerformanceSharesMember2023-12-310000896159cb:AceLimited2004LongTermIncentivePlanMemberus-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310000896159cb:LegacyChubbCorpMembersrt:MinimumMemberus-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310000896159srt:MaximumMembercb:LegacyChubbCorpMemberus-gaap:RestrictedStockUnitsRSUMember2023-01-012023-12-310000896159us-gaap:RestrictedStockUnitsRSUMember2023-12-310000896159us-gaap:DefinedBenefitPostretirementHealthCoverageMembercountry:US2016-10-312016-10-310000896159us-gaap:DefinedBenefitPostretirementHealthCoverageMembercb:SubjecttoAmortizationMembercountry:US2016-10-312016-10-310000896159us-gaap:DefinedBenefitPostretirementHealthCoverageMembercountry:US2021-01-012021-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMember2021-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2021-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2021-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-01-012023-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-01-012022-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-12-310000896159us-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2021-01-012021-12-310000896159cb:LossesandlossexpensesMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000896159cb:LossesandlossexpensesMemberus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000896159cb:LossesandlossexpensesMemberus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembercb:LossesandlossexpensesMember2023-01-012023-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembercb:LossesandlossexpensesMember2022-01-012022-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembercb:LossesandlossexpensesMember2021-01-012021-12-310000896159us-gaap:GeneralAndAdministrativeExpenseMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000896159us-gaap:GeneralAndAdministrativeExpenseMemberus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000896159us-gaap:GeneralAndAdministrativeExpenseMemberus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:GeneralAndAdministrativeExpenseMember2023-01-012023-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:GeneralAndAdministrativeExpenseMember2022-01-012022-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMemberus-gaap:GeneralAndAdministrativeExpenseMember2021-01-012021-12-310000896159us-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000896159us-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000896159us-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000896159cb:ServiceCostMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-01-012023-12-310000896159cb:ServiceCostMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-01-012023-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMembercb:InterestCostMember2023-01-012023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMembercb:InterestCostMember2023-01-012023-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembercb:InterestCostMember2023-01-012023-12-310000896159cb:ServiceCostMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-01-012022-12-310000896159cb:ServiceCostMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-01-012022-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMembercb:InterestCostMember2022-01-012022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMembercb:InterestCostMember2022-01-012022-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembercb:InterestCostMember2022-01-012022-12-310000896159cb:ServiceCostMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2021-01-012021-12-310000896159cb:ServiceCostMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2021-01-012021-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMembercb:InterestCostMember2021-01-012021-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMembercb:InterestCostMember2021-01-012021-12-310000896159us-gaap:OtherPostretirementBenefitPlansDefinedBenefitMembercb:InterestCostMember2021-01-012021-12-310000896159srt:MinimumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159srt:MaximumMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159country:USus-gaap:ShortTermInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159country:USus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel1Membercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMembercountry:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159country:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159country:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159country:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159country:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159country:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159country:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:ForeignPlanMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2023-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:ForeignPlanMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159cb:InvestmentFundsLimitedPartnershipsPartiallyOwnedInvestmentCompaniesFairValueMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159cb:InvestmentFundsLimitedPartnershipsPartiallyOwnedInvestmentCompaniesFairValueMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:ShortTermInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:USTreasuryAndGovernmentMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel1Membercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMembercountry:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159country:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159country:USus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:DefinedBenefitPlanDerivativeMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel1Membercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Membercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159country:USus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:ShortTermInvestmentsMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:ForeignPlanMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignGovernmentDebtSecuritiesMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMemberus-gaap:DefinedBenefitPlanEquitySecuritiesMember2022-12-310000896159us-gaap:FairValueInputsLevel1Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:ForeignPlanMemberus-gaap:FairValueInputsLevel3Memberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159cb:InvestmentFundsLimitedPartnershipsPartiallyOwnedInvestmentCompaniesFairValueMembercountry:USus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159cb:InvestmentFundsLimitedPartnershipsPartiallyOwnedInvestmentCompaniesFairValueMemberus-gaap:ForeignPlanMemberus-gaap:PensionPlansDefinedBenefitMember2022-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:FixedMaturitiesMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-12-310000896159us-gaap:OtherInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2023-12-310000896159us-gaap:FairValueInputsLevel2Memberus-gaap:FixedMaturitiesMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-12-310000896159us-gaap:OtherInvestmentsMemberus-gaap:OtherPostretirementBenefitPlansDefinedBenefitMember2022-12-310000896159cb:PartiallyOwnedInvestmentCompaniesMember2023-01-012023-12-310000896159cb:PartiallyOwnedInvestmentCompaniesMember2022-01-012022-12-310000896159cb:PartiallyOwnedInvestmentCompaniesMember2021-01-012021-12-310000896159cb:HuataiGroupMember2023-01-012023-12-310000896159cb:HuataiGroupMember2022-01-012022-12-310000896159cb:HuataiGroupMember2021-01-012021-12-310000896159cb:SegmentInsuranceNorthAmericanCommercialPCMember2023-01-012023-12-310000896159cb:SegmentCorporateAndOtherMember2023-01-012023-12-310000896159cb:SegmentMeasureReconcilingItemsMember2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanCommercialPCMember2022-01-012022-12-310000896159cb:SegmentCorporateAndOtherMember2022-01-012022-12-310000896159cb:SegmentMeasureReconcilingItemsMember2022-01-012022-12-310000896159cb:SegmentInsuranceNorthAmericanCommercialPCMember2021-01-012021-12-310000896159cb:SegmentInsuranceNorthAmericanPersonalPCMember2021-01-012021-12-310000896159cb:SegmentCorporateAndOtherMember2021-01-012021-12-310000896159cb:SegmentMeasureReconcilingItemsMember2021-01-012021-12-310000896159cb:SegmentInsuranceNorthAmericanCommercialPCMembercb:PropertyandothershorttailMember2023-01-012023-12-310000896159cb:SegmentInsuranceNorthAmericanCommercialPCMembercb:PropertyandothershorttailMember2022-01-012022-12-310000896159cb:SegmentInsuranceNorthAmericanCommercialPCMembercb:PropertyandothershorttailMember2021-01-012021-12-310000896159cb:CasualtyandallotherMembercb:SegmentInsuranceNorthAmericanCommercialPCMember2023-01-012023-12-310000896159cb:CasualtyandallotherMembercb:SegmentInsuranceNorthAmericanCommercialPCMember2022-01-012022-12-310000896159cb:CasualtyandallotherMembercb:SegmentInsuranceNorthAmericanCommercialPCMember2021-01-012021-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentInsuranceNorthAmericanCommercialPCMember2023-01-012023-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentInsuranceNorthAmericanCommercialPCMember2022-01-012022-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentInsuranceNorthAmericanCommercialPCMember2021-01-012021-12-310000896159us-gaap:AutomobilesMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2023-01-012023-12-310000896159us-gaap:AutomobilesMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2022-01-012022-12-310000896159us-gaap:AutomobilesMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2021-01-012021-12-310000896159cb:PersonalhomeownerMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2023-01-012023-12-310000896159cb:PersonalhomeownerMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2022-01-012022-12-310000896159cb:PersonalhomeownerMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2021-01-012021-12-310000896159us-gaap:OtherInsuranceProductLineMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2023-01-012023-12-310000896159us-gaap:OtherInsuranceProductLineMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2022-01-012022-12-310000896159us-gaap:OtherInsuranceProductLineMembercb:SegmentInsuranceNorthAmericanPersonalPCMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:PropertyandothershorttailMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:PropertyandothershorttailMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:PropertyandothershorttailMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:CasualtyandallotherMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:CasualtyandallotherMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:CasualtyandallotherMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:PersonalLinesMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:PersonalLinesMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMembercb:PersonalLinesMember2021-01-012021-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2023-01-012023-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2022-01-012022-12-310000896159cb:SegmentInsuranceOverseasGeneralMemberus-gaap:AccidentAndHealthInsuranceSegmentMember2021-01-012021-12-310000896159cb:PropertyandothershorttailMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:PropertyandothershorttailMembercb:SegmentGlobalReinsuranceMember2022-01-012022-12-310000896159cb:PropertyandothershorttailMembercb:SegmentGlobalReinsuranceMember2021-01-012021-12-310000896159cb:PropertycatastropheMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:PropertycatastropheMembercb:SegmentGlobalReinsuranceMember2022-01-012022-12-310000896159cb:PropertycatastropheMembercb:SegmentGlobalReinsuranceMember2021-01-012021-12-310000896159cb:CasualtyandallotherMembercb:SegmentGlobalReinsuranceMember2023-01-012023-12-310000896159cb:CasualtyandallotherMembercb:SegmentGlobalReinsuranceMember2022-01-012022-12-310000896159cb:CasualtyandallotherMembercb:SegmentGlobalReinsuranceMember2021-01-012021-12-310000896159us-gaap:LifeInsuranceSegmentMembercb:SegmentLifeMember2023-01-012023-12-310000896159us-gaap:LifeInsuranceSegmentMembercb:SegmentLifeMember2022-01-012022-12-310000896159us-gaap:LifeInsuranceSegmentMembercb:SegmentLifeMember2021-01-012021-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2023-01-012023-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2022-01-012022-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMembercb:SegmentLifeMember2021-01-012021-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:NorthAmericaMemberus-gaap:SalesRevenueNetMember2023-01-012023-12-31iso4217:BNDiso4217:VND0000896159srt:EuropeMemberus-gaap:GeographicConcentrationRiskMemberus-gaap:SalesRevenueNetMember2023-01-012023-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:AsiaPacificMemberus-gaap:SalesRevenueNetMember2023-01-012023-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:LatinAmericaMemberus-gaap:SalesRevenueNetMember2023-01-012023-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:NorthAmericaMemberus-gaap:SalesRevenueNetMember2022-01-012022-12-310000896159srt:EuropeMemberus-gaap:GeographicConcentrationRiskMemberus-gaap:SalesRevenueNetMember2022-01-012022-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:AsiaPacificMemberus-gaap:SalesRevenueNetMember2022-01-012022-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:LatinAmericaMemberus-gaap:SalesRevenueNetMember2022-01-012022-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:NorthAmericaMemberus-gaap:SalesRevenueNetMember2021-01-012021-12-310000896159srt:EuropeMemberus-gaap:GeographicConcentrationRiskMemberus-gaap:SalesRevenueNetMember2021-01-012021-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:AsiaPacificMemberus-gaap:SalesRevenueNetMember2021-01-012021-12-310000896159us-gaap:GeographicConcentrationRiskMembersrt:LatinAmericaMemberus-gaap:SalesRevenueNetMember2021-01-012021-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Membercb:ABRReinsuranceCapitalHoldingsLtd.Membercountry:BM2023-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Member2023-12-310000896159cb:BlackRockIncMemberus-gaap:RelatedPartyMember2023-01-012023-12-310000896159cb:BlackRockIncMemberus-gaap:RelatedPartyMember2022-01-012022-12-310000896159cb:BlackRockIncMemberus-gaap:RelatedPartyMember2021-01-012021-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Member2023-01-012023-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Member2022-01-012022-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Member2021-01-012021-12-310000896159cb:ABRReinsuranceCapitalHoldingsLtd.Member2022-12-310000896159cb:AquilineCapitalPartnersLLCMember2023-12-310000896159cb:AquilineCapitalPartnersLLCMember2023-01-012023-12-310000896159cb:AquilineCapitalPartnersLLCMember2022-01-012022-12-310000896159cb:AquilineCapitalPartnersLLCMember2021-01-012021-12-310000896159cb:AquilineCapitalPartnersLLCMember2022-12-310000896159cb:StarrTechnicalRiskAgencyandAffiliatesMember2023-01-012023-12-310000896159cb:StarrTechnicalRiskAgencyandAffiliatesMember2022-01-012022-12-310000896159cb:StarrTechnicalRiskAgencyandAffiliatesMember2021-01-012021-12-310000896159cb:StarrTechnicalRiskAgencyandAffiliatesMember2023-12-310000896159cb:StarrTechnicalRiskAgencyandAffiliatesMember2022-12-310000896159cb:PropertyAndCasualtySubsidiariesMember2023-12-310000896159cb:PropertyAndCasualtySubsidiariesMember2022-12-310000896159cb:LifeSubsidiariesMember2023-12-310000896159cb:LifeSubsidiariesMember2022-12-310000896159cb:PropertyAndCasualtySubsidiariesMember2023-01-012023-12-310000896159cb:PropertyAndCasualtySubsidiariesMember2022-01-012022-12-310000896159cb:PropertyAndCasualtySubsidiariesMember2021-01-012021-12-310000896159cb:LifeSubsidiariesMember2023-01-012023-12-310000896159cb:LifeSubsidiariesMember2022-01-012022-12-310000896159cb:LifeSubsidiariesMember2021-01-012021-12-310000896159us-gaap:ShortTermInvestmentsMember2023-12-310000896159us-gaap:AvailableforsaleSecuritiesMemberus-gaap:USTreasuryAndGovernmentMember2023-12-310000896159us-gaap:AvailableforsaleSecuritiesMemberus-gaap:ForeignGovernmentDebtSecuritiesMember2023-12-310000896159us-gaap:AvailableforsaleSecuritiesMemberus-gaap:CorporateDebtSecuritiesMember2023-12-310000896159us-gaap:MortgageBackedSecuritiesMemberus-gaap:AvailableforsaleSecuritiesMember2023-12-310000896159us-gaap:USStatesAndPoliticalSubdivisionsMemberus-gaap:AvailableforsaleSecuritiesMember2023-12-310000896159us-gaap:AvailableforsaleSecuritiesMember2023-12-310000896159cb:PrivateDebtHeldForInvestmentMember2023-12-310000896159us-gaap:IndustrialMiscellaneousAndAllOthersMember2023-12-310000896159cb:AlternativeInvestmentMember2023-12-310000896159us-gaap:OtherLongTermInvestmentsMember2023-12-310000896159cb:AllRelatedPartyMember2023-12-310000896159srt:ParentCompanyMember2023-12-310000896159srt:ParentCompanyMember2022-12-310000896159srt:ParentCompanyMember2023-01-012023-12-310000896159srt:ParentCompanyMember2022-01-012022-12-310000896159srt:ParentCompanyMember2021-01-012021-12-310000896159srt:ParentCompanyMember2021-12-310000896159srt:ParentCompanyMember2020-12-310000896159us-gaap:PropertyLiabilityAndCasualtyInsuranceSegmentMember2023-01-012023-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMember2023-01-012023-12-310000896159us-gaap:LifeInsuranceSegmentMember2023-01-012023-12-310000896159us-gaap:PropertyLiabilityAndCasualtyInsuranceSegmentMember2022-01-012022-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMember2022-01-012022-12-310000896159us-gaap:LifeInsuranceSegmentMember2022-01-012022-12-310000896159us-gaap:PropertyLiabilityAndCasualtyInsuranceSegmentMember2021-01-012021-12-310000896159us-gaap:AccidentAndHealthInsuranceSegmentMember2021-01-012021-12-310000896159us-gaap:LifeInsuranceSegmentMember2021-01-012021-12-31