TRV


Line plots across dimensions of each concept
Line plots across concepts
Tables

Table of contents



us-gaap:SharesIssued
us-gaap:ConsolidatedEntities

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesOutstanding
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:BenefitsLossesAndExpenses

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxExpenseBenefit
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeTaxesPaidNet

us-gaap:InsuranceCommissionsAndFees
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetInvestmentIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:PremiumsEarnedNet

us-gaap:RealizedInvestmentGainsLosses
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:Revenues

us-gaap:SellingGeneralAndAdministrativeExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:Cash

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AmortizationOfIntangibleAssets

us-gaap:Goodwill
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:EquitySecuritiesFvNi
us-gaap:ConsolidatedEntities
us-gaap:InvestmentType

us-gaap:OtherAssets

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:DebtCurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValue
us-gaap:ConsolidatedEntities
us-gaap:StatementEquityComponents
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DepreciationDepletionAndAmortization

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock
us-gaap:StatementEquityComponents
us-gaap:Dividends

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:GuaranteeObligationsByNature, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateStatedPercentage
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:ConsolidationItems
trv:AfterTaxInterestExpense
us-gaap:ProductOrService
trv:AmountOfIncreaseDecreaseInGrossClaimsAndClaimAdjustmentExpenseReserves
us-gaap:ProductOrService
trv:AmountOfIncreaseDecreaseInReinsuranceRecoverablesOnUnpaidLosses

trv:ChangeInNetUnrealizedGainLossOnInvestmentSecuritiesHavingCreditLossesRecognizedInConsolidatedStatementOfIncomeBeforeTaxPortionAttributableToParent

trv:ContractholderReceivablesCreditLossExpenseReversal

trv:ContractholderReceivablesLossOnUncollectibleAccountsInPeriod
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
trv:DebtInstrumentRedemptionPriceCalculationInterestAssumptionBasisSpread

trv:DebtSecuritiesAvailableForSaleCreditImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedInNetRealizedInvestmentGainsLosses
us-gaap:InvestmentType

trv:FeeIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
trv:NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

trv:NetRealizedInvestmentGainsLossesAfterTax

trv:OperatingIncomeLossNetOfTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

trv:OperatingLeaseAndShortTermLeaseCost

trv:OtherInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses

trv:PaymentsToAcquireEquitySecurities

trv:ProceedsFromSaleOfEquitySecurities
us-gaap:ConsolidationItems
trv:RevenuesExcludingRealizedGainLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

trv:SecuritiesTransactionsInCourseOfSettlement

trv:SubrogationRecoveryBenefit
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:StatementScenario, us-gaap:SubsequentEventType

trv:SubrogationRecoveryPaymentsReceived

trv:TotalInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses

trv:TotalInvestmentsTotalNetCreditImpairmentRecoveriesRecognizedInNetRealizedInvestmentGainsLosses
us-gaap:ProductOrService
us-gaap:AccretionExpense

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:CommonStockDividendsPerShareDeclared
us-gaap:CededCreditRisk, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
us-gaap:CreditRatingAMBest, us-gaap:CededCreditRisk, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentRedemptionPricePercentage

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DeferredFederalIncomeTaxExpenseBenefit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:IncomeStatementLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:RetirementPlanType

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EquitySecuritiesFvNiUnrealizedGain
us-gaap:InvestmentType

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedLoss
us-gaap:InvestmentType

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInUnearnedPremiums

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:LeaseCost
us-gaap:ProductOrService, us-gaap:NoncatastrophicEvent, us-gaap:StatementBusinessSegments
us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsNetPeriodIncreaseDecrease
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
us-gaap:IncomeStatementLocation, us-gaap:RetirementPlanType
us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent
us-gaap:RetirementPlanType
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
us-gaap:StatementEquityComponents

us-gaap:OtherOperatingActivitiesCashFlowStatement
us-gaap:ProductOrService
us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForProceedsFromAvailableforsaleSecuritiesShortterm

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireRealEstateHeldForInvestment

us-gaap:PremiumReceivableCreditLossExpenseReversal

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance

us-gaap:ProceedsFromDebtNetOfIssuanceCosts
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromStockOptionsExercised
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReinsuranceRecoverableCreditLossExpenseReversal
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:RepaymentsOfDebt

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:BusinessAcquisition
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType, us-gaap:PlanName, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
us-gaap:AwardType, us-gaap:PlanName, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType, us-gaap:PlanName, us-gaap:SubsequentEventType
us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:ShortTermLeaseCost
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StockholdersEquityOther
us-gaap:ProductOrService
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense
us-gaap:ProductOrService
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockSharesAcquired
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

dei:EntityCommonStockSharesOutstanding

trv:ContractholderPayables

trv:ContractholderReceivables

trv:ContractholderReceivablesAllowanceForCreditLoss

trv:DebtInstrumentCarryingAmountExcludingCurrentMaturities
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trv:DebtLongTermAndShortTerm

trv:DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfFixedMaturityPortfolioOnPretaxBasis

trv:DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfShareholdersEquityOnAfterTaxBasis

trv:DeferredTaxLiabilitiesTaxCutsandJobsActof2017DiscountedReservesTransitionAdjustment

trv:EstimatedFairValueOfPutCallOption
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

trv:FairValueOfFixedMaturitiesForWhichCompanyReceivedBrokerQuote

trv:FairValueOfFixedMaturitiesForWhichCompanyUsedInternalPricingMatrix
us-gaap:ConsolidatedEntities
trv:FairValueOfOwnedSecuritiesPledgedIntoALloydsTrustAccountToSupportCapitalRequirementsForTheCompanysOperationsAtLloyds

trv:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

trv:MinimumVieEquityInterestPercentageToBeConsideredSignificant
us-gaap:ConsolidatedEntities
trv:OtherAssetsCondensed
us-gaap:ConsolidatedEntities
trv:OtherLiabilitiesCondensed

trv:PercentChangeInMonthlyPriceRequiringEvaluation
us-gaap:InvestmentType
trv:PercentGuaranteedByOrFullyCollateralizedBySecuritiesIssuedByGnmaFnmaOrFhlmc

trv:PercentOfFixedMaturitiesForWhichPricingServiceEstimatesFairValue

trv:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForVariousObligations

trv:ReinsuranceRecoverablesGrossExcludingStructuredSettlementsAndMandatoryPoolsAndAssociations

trv:ReinsuranceRecoverablesMandatoryPoolsAndAssociations

trv:ReinsuranceRecoverablesStructuredSettlements
us-gaap:AwardType
trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedDividendEquivalentsNumber
us-gaap:PlanName
trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesOriginallyAuthorized

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingAggregateIntrinsicValue

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingWeightedAverageExercisePrice
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
trv:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesAmountRelatedToCededReserves

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService

trv:TerrorismRiskInsuranceProgramAnnualAggregateIndustryLossMinimumInOrderForLossToBeCoveredMaximum

trv:TerrorismRiskInsuranceProgramCompanysEstimatedDeductible

trv:UnamortizedPurchasePriceAdjustment
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trv:UnfundedCommitmentsToPrivateEquityLimitedPartnershipsRealEstatePartnershipsAndOther

trv:UnrecognizedTaxBenefitsForWhichDeductibilityIsCertainButTimingIsUncertain

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AssetsHeldByInsuranceRegulators

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:ConsolidatedEntities
us-gaap:ExternalCreditRatingByGrouping
us-gaap:InvestmentType

us-gaap:CededPremiumsPayable

us-gaap:CommercialPaper

us-gaap:CommonStockValueOutstanding
us-gaap:ConsolidatedEntities
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentFaceAmount
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentInterestRateEffectivePercentage

us-gaap:DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet

us-gaap:DebtLongtermAndShorttermCombinedAmount
us-gaap:ConsolidatedEntities

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:InvestmentType

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsLossReserves

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve

us-gaap:DeferredTaxLiabilitiesDeferredExpenseCapitalizedSoftware

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost

us-gaap:DeferredTaxLiabilitiesInvestments

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:Range, us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:Range, us-gaap:EquitySecuritiesByInvestmentObjective, us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:Range, us-gaap:EquitySecuritiesByInvestmentObjective, us-gaap:RetirementPlanType
us-gaap:RetirementPlanSponsorLocation, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanUltimateHealthCareCostTrendRate1

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOwnershipPercentage

us-gaap:EquitySecuritiesFvNiCost
us-gaap:InvestmentType

us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
us-gaap:InvestmentType

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:GuaranteeObligationsByNature
us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:Investments
us-gaap:ConsolidatedEntities
us-gaap:InvestmentsInAndAdvancesToAffiliatesAmountOfEquity

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear

us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsNet

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebtFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:LossContingencyReceivable

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableCurrent

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInFourYears

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears

us-gaap:OperatingLeasesFutureMinimumPaymentsReceivableThereafter
us-gaap:IncomeTaxAuthorityName
us-gaap:OperatingLossCarryforwards

us-gaap:OtherInvestments

us-gaap:OtherLiabilities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherLiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherShortTermInvestments
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:RetirementPlanType
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForLetterOfCreditFacilities

us-gaap:PolicyholderDividendsPayable

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccounts

us-gaap:PremiumsReceivableAtCarryingValue

us-gaap:PrepaidReinsurancePremiums

us-gaap:RealEstateInvestmentPropertyAccumulatedDepreciation

us-gaap:RealEstateInvestments

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService

us-gaap:ReinsuranceRecoverablesAllowance

us-gaap:ReinsuranceRecoverablesGross
us-gaap:CreditRatingAMBest, us-gaap:CededCreditRisk, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ReinsuranceRecoverablesOnPaidAndUnpaidLosses

us-gaap:SecuritiesLoaned
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearEight
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearNine
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearSeven
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearSix
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTen
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:ConsolidationItems, us-gaap:ProductOrService
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetNotSeparatelyPresented
us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ConsolidatedEntities, us-gaap:StatutoryAccountingPracticesByJurisdiction
us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval
us-gaap:ConsolidatedEntities
us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
us-gaap:SubsequentEventType
us-gaap:StockRepurchaseProgramAuthorizedAmount1

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrant
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDeferredPolicyAcquisitionCosts
us-gaap:ProductOrService
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReserves
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrant
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrant
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersReservesForUnpaidClaimsAndClaimsAdjustmentExpense
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersByAffiliationWithRegistrant
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersUnearnedPremiums

us-gaap:SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:SupplementaryInsuranceInformationUnearnedPremiums
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:TreasuryStockShares
us-gaap:ConsolidatedEntities

us-gaap:UnearnedPremiums

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance
us-gaap:ProductOrService
us-gaap:WorkersCompensationLiabilityCurrentAndNoncurrent

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Allocated Share Based Compensation Expense
Balance Sheet
Intangible Assets Net Excluding Goodwill
Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
Current Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
NonCurrent Assets
Intangible Assets Net Excluding Goodwill
Liabilities
Operating Lease Liability
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Declared
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Common Stock Shares Outstanding
DividendsAndRepurchase
Payments Of Dividends Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:SharesIssued ▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▄▄▄▄▅▅▅▆▆▆▆▆▆▆▇▇▇█249.5251.5252.4253.3253.2252.9255.5258.1260.4262.0263.7264.9267.8270.3271.5273.8275.9279.4279.6284.1288.3292.4295.9304.2311.2318.7322.2331.4339.0347.5353.5364.1373.5376.4377.4382.0386.0389.8392.8412.8419.5420.3434.6NANANA520.3NANANA
us-gaap:CommonStockSharesAuthorized ████████████████████████████████████████▁▁▁1750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01750.01748.61748.61748.6NANANA1748.6NANANA
us-gaap:CommonStockSharesOutstanding ▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▃▄▄▄▄▄▄▄▅▅▅▅▅▅▆▆▇▇█249.5251.5252.4253.3253.2252.8255.5258.1260.3261.9263.6264.8267.7270.2271.4273.7275.9279.4279.6284.1288.3292.4295.9304.2311.2318.7322.2331.4339.0347.5353.5364.1373.5376.4377.4382.0386.0389.8392.8412.8419.5420.3434.6460.5470.8497.0520.3NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█253.1254.1NA254.3251.6255.9NA261.8263.7264.8NA268.4271.1273.9NA276.6280.0282.4NA289.8293.6297.9NA311.0318.0324.5NA338.9346.7354.6NA372.9379.9381.9NA387.9391.6395.8NA418.5418.6434.4NA472.0490.8515.1NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█250.7252.1NA253.3251.6254.4NA259.2261.3262.9NA266.1268.7271.0NA274.1277.5279.7NA286.0290.1294.2NA307.6314.8320.8NA335.1343.0350.9NA368.9375.9377.7NA384.0388.0392.0NA415.0418.6428.2NA465.9484.5508.4NANANANA
us-gaap:EarningsPerShareBasic ▆▅█▆▂▅▆▄▄▆▅▅▄▅▄▃▅▅▆▅▅▅▅▆▅▅▆▅▄▅▅▅▅▅▃▅▄▄▄▃▁▄▄▅▄▃▅▄▄▃3.72.895.133.24-0.162.343.371.522.113.012.332.651.932.452.01.062.132.193.322.482.272.332.873.02.562.583.152.721.982.982.732.332.442.360.792.231.272.041.520.8-0.881.941.982.141.371.262.391.661.271.12
us-gaap:EarningsPerShareDiluted ▆▅█▆▂▅▆▄▄▆▅▅▄▅▄▃▄▅▆▅▅▅▅▆▅▅▆▅▄▅▅▅▅▅▃▅▄▄▄▃▁▄▄▄▄▃▅▄▄▃3.662.875.13.23-0.162.333.351.52.12.992.322.621.922.421.981.052.112.173.282.452.242.32.832.972.532.553.112.691.952.952.72.32.412.330.782.211.262.021.510.79-0.881.921.952.111.351.252.361.651.271.11
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AllocatedShareBasedCompensationExpense ▄█▃▃▃▆▂▃▃▆▂▃▃▆▃▂▂▅▂▅▃▇▃▂▂▆▃▂▂▆▂▂▂▅▂▁▂▄▁▁▂▄▂▁▂▅36.053.035.033.034.046.030.032.035.045.030.033.033.044.032.031.031.042.031.042.032.050.032.031.031.047.032.031.031.044.030.029.029.041.028.026.028.038.027.027.030.037.030.027.029.042.0NANANANA
us-gaap:BenefitsLossesAndExpenses ██▆▇█▇▇█▇▆▇▆▆▅▆▇▅▅▄▄▄▄▃▃▃▃▃▃▄▂▃▂▃▂▅▃▄▃▃▄▇▃▂▂▃▂▁▂▂▂7556.07422.06781.07289.07486.07188.06989.07581.07169.06704.07050.06917.06846.06508.06591.07005.06394.06182.05891.06014.05898.05769.05465.05487.05630.05478.05323.05628.05884.05238.05366.05275.05497.05108.06166.05342.05751.05315.05595.06075.07115.05309.05135.05111.05298.05262.04663.05077.05221.05008.0
us-gaap:ComprehensiveIncomeNetOfTax ▆▁▇▅█▂▅▅▆█▅▃▃▂▄▃▅▅▁▄▆▆▄▅▃▄1412.0-478.01674.01083.01891.0-89.0888.0815.01445.01973.0765.0394.0158.0-264.0493.0352.0866.0757.0-472.0411.01215.01262.0677.0791.0212.0722.0NANANANANANANANANANANANA591.0654.075.0856.0-223.01687.01089.0699.0NANANANA
us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense █▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▁▂▂▁▁▂▂▂▂▂▂▂▁▂▂▁▁1254.01207.01215.01207.01173.01178.01181.01169.01134.01117.01122.01117.01081.01061.01072.01059.01032.01003.01013.01012.0989.0971.0972.0987.0963.0963.0983.0984.0965.0950.0970.0953.0950.0948.0977.0986.0976.0971.0976.0982.0970.0948.0957.0966.0950.0929.0NANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▇▆█▆▃▅▆▄▅▆▅▆▅▅▆▄▆▅▇▆▆▆▇▇▆▇█▇▆█▇▇▇▇▄▇▅▆▅▄▁▆▇▇▆▆1131.0891.01616.0986.0-85.0720.01074.0432.0665.0967.0746.0806.0631.0778.0860.0320.0790.0760.01302.0947.0887.0917.01209.01307.01076.01148.01460.01258.0901.01470.01371.01177.01177.01220.0311.01170.0608.01077.0778.0332.0-727.0969.01197.01371.0881.0857.0NANANANA
us-gaap:IncomeTaxExpenseBenefit ▆▅▆▅▄▅▆▄▅▅▅▅▅▅▆▄▅▅▇▆▆▆▇▇▆▆▇▇▆▇▇▆▆▇▄▆▅▆▅▄▁▅▆▇▆▆█▆▆▄197.0158.0306.0159.0-45.0120.0201.036.0108.0171.0125.097.0107.0109.0309.027.0195.0143.0359.0231.0223.0226.0343.0379.0264.0315.0422.0339.0218.0418.0383.0313.0252.0324.07.0306.0109.0271.0160.0-1.0-363.0130.0303.0366.0211.0210.0508.0315.0201.065.0
us-gaap:IncomeTaxesPaidNet ▅▃▄▆▂▂▃▃▅▂▄▂▄▃▃▃▅▂▄▄▆▃▅▅▆▃▅▃█▃▅▄▆▂▁▂▅▂▂▂▄▃▅284.058.0165.0396.02.015.061.042.0320.05.0164.06.0182.056.047.0144.0321.02.0244.0181.0404.063.0325.0285.0471.0126.0362.058.0634.093.0333.0229.0468.027.0-122.014.0276.020.0-59.0-14.0179.0112.0273.0NANANANANANANA
us-gaap:InsuranceCommissionsAndFees NANANA101.0114.0108.0113.0121.0116.0109.0108.0109.0112.0103.0105.0113.0116.0113.0106.0116.0119.0117.0111.0112.0111.0111.0109.0110.0112.0107.0109.0107.082.097.090.092.059.082.069.079.074.0NANANANANANANANANA
 us-gaap:InsuranceCommissionsAndFees us-gaap:ConsolidationItems us-gaap:OperatingSegmentsNANANA101.0114.0108.0113.0121.0116.0109.0108.0109.0112.0103.0105.0113.0116.0113.0106.0116.0119.0117.0111.0112.0111.0111.0109.0110.0112.0107.0109.0107.082.097.090.092.059.0NANANANANANANANANANANANANA
 us-gaap:InsuranceCommissionsAndFees us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,trv:BusinessAndInternationalInsuranceNANANA95.0108.0102.0108.0114.0111.0104.0103.0103.0107.099.0101.0108.0112.0109.0102.0111.0115.0114.0111.0112.0111.0111.0109.0110.0112.0107.0109.0107.0NANANANANANANANANANANANANANANANANANA
 us-gaap:InsuranceCommissionsAndFees us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,trv:PersonalInsuranceNANANA6.06.06.05.07.05.05.05.06.05.04.04.05.04.04.04.05.04.03.04.04.04.03.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense ▂▁▂▄▃▂▂▂▅▄▄▃▅▅▇█▆▅▅▅▇▆█▇▆▆83.082.083.087.085.084.083.084.089.088.087.086.090.089.093.095.092.089.090.089.093.091.095.094.092.092.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InterestPaidNet ▅▂▆▂▅▂▅▂▆▂▆▂▇▁█▁▇▁104.059.0113.060.0106.060.0107.060.0121.050.0122.050.0136.039.0150.039.0135.043.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▆▅█▅▁▄▆▃▄▅▄▅▄▅▄▃▄▄▆▅▅▅▆▆▅▆▇▆▅▇934.0733.01310.0827.0-40.0600.0873.0396.0557.0796.0621.0709.0524.0669.0551.0293.0595.0617.0943.0716.0664.0691.0866.0928.0812.0833.01038.0919.0683.01052.0NANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▆▆█▆▂▅▆▄▅▆▅▅▅▅▅▄▅▅▆▆▅▅▆▆▆▆▇▆▅▇▇▆▆▆▄▆▅▆▅▄▁▆▆▇▅▅927.0728.01300.0821.0-41.0595.0866.0393.0553.0791.0616.0704.0520.0664.0547.0291.0590.0613.0937.0710.0659.0686.0859.0922.0806.0827.01030.0912.0678.01045.0981.0858.0918.0890.0302.0858.0495.0800.0613.0331.0-366.0831.0886.0996.0665.0641.0NANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▆▆█▆▂▅▆▄▅▆▅▅▅▅▅▄▅▅▆▆▅▅▆▆▆▆▇▆▅▇▇▆▆▆▄▆▅▆▅▄▁▆▆▇▅▅927.0728.01300.0821.0-41.0595.0866.0393.0553.0791.0616.0704.0520.0664.0547.0291.0590.0613.0937.0710.0659.0686.0859.0922.0806.0827.01030.0912.0678.01045.0981.0858.0918.0890.0302.0858.0495.0800.0613.0331.0-366.0832.0888.0998.0665.0642.0NANANANA
us-gaap:NetInvestmentIncome █▇▆▆▁▅▅▆▆▅▆▆▅▅▅▅▅▅▆▅▅▅▄▅▆▅▆▇▆▇▇▆▆▆▆▇▇▇▆▆▇██▇▇▇818.0701.0677.0671.0268.0611.0616.0622.0648.0582.0630.0646.0595.0603.0601.0588.0598.0610.0627.0582.0549.0544.0541.0614.0632.0592.0637.0719.0695.0736.0702.0657.0687.0670.0689.0722.0738.0740.0652.0690.0758.0779.0809.0735.0762.0753.0NANANANA
us-gaap:OtherIncome ▆▅▅▆▄▄▅▅▄▅▄▄▄▄▄▄▄▃█▃▃▄▃▃▃▃▄▃▃▄▅▄▇▃▃▃▃▄▃▃▃▃▁▄▃▃88.081.084.086.051.058.072.068.057.072.053.057.039.054.049.040.039.031.0148.031.031.053.031.021.022.025.036.034.034.041.064.044.0135.034.020.034.029.037.027.031.034.034.0-29.035.032.032.0NANANANA
us-gaap:PolicyholderBenefitsAndClaimsIncurredNet ▇▇▅▇█▇▆█▇▅▆▆▆▅▅▇▅▄▃▃▃▃▂▂▂▂▁▂▃▂▂▁▂▁▄▂▃▂▃▄█▂▁▁▂▂5045.04970.04341.04886.05107.04789.04640.05230.04821.04442.04778.04655.04562.04296.04342.04806.04225.04094.03740.03856.03762.03712.03363.03382.03547.03431.03209.03520.03826.03315.03327.03297.03530.03153.04167.03359.03786.03364.03617.04136.05141.03382.03190.03213.03419.03388.0NANANANA
us-gaap:PremiumsEarnedNet █▇█▇▆▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▂▂▁▁7616.07386.07480.07380.06955.07229.07250.07179.06988.06855.06945.06882.06695.06537.06626.06523.06351.06183.06277.06209.06067.05981.06023.06032.05931.05888.05979.05983.05928.05823.05851.05666.05603.05517.05639.05666.05529.05523.05611.05605.05503.05371.05440.05422.05340.05230.0NANANANA
us-gaap:RealizedInvestmentGainsLosses ▇▇▇▆▅▁▅▆▆▇▇▆▆▄█▇█61.044.050.037.013.0-98.012.023.025.053.060.029.036.0-11.070.061.080.0NANANANANANANANANANANANANANANANANANANANANANANANA20.0NANANA25.0NANANANA
us-gaap:Revenues █▇▇▇▅▆▇▆▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▄▃▃▃▄▃▃▃▃▃▂▃▃▂▃▃▃▃▂▂▃▂▂▃▂▂▁8687.08313.08397.08275.07401.07908.08063.08013.07834.07671.07796.07723.07477.07286.07451.07325.07184.06942.07193.06961.06785.06686.06674.06794.06706.06626.06783.06886.06785.06708.06737.06452.06674.06328.06477.06512.06359.06392.06373.06407.06388.06278.06332.06482.06179.06119.06456.06327.06162.05735.0
us-gaap:SellingGeneralAndAdministrativeExpense ██▇▅▆▇▅▅▆▃▄▄▆▄▄▃▃▁▃▃▃▁▂▂▂▁1174.01163.01142.01109.01121.01137.01085.01098.01125.01057.01063.01059.01113.01062.01084.01045.01045.0996.01048.01057.01054.0995.01024.01028.01032.0995.0NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Assets █▇▇▇▆▄▅▅▄▄▂▃▂▂▂▂▂▁▁▂▂▂▁▂▂▂▂▃▃▂▂▂▂▂▃▃▂▃▃▃▃▃▃119759.0117032.0116764.0116384.0113337.0109436.0110122.0110241.0108572.0107246.0104233.0104390.0103523.0103676.0103483.0104311.0102669.0101246.0100245.0102787.0102446.0101680.0100184.0102110.0101664.0102691.0103078.0104522.0104811.0104134.0103812.0102685.0101900.0103897.0104938.0105445.0104330.0104866.0104602.0106933.0106468.0105252.0105181.0NANANA109560.0NANANA
us-gaap:Liabilities █▇▆▇▆▅▅▅▄▄▃▄▃▃▃▃▂▂▁▂▂▁▁▂▁▂▂▂▂▂▂▂▁▂▂▂▂▃▃▄▃▃▃90603.088763.087563.088535.086394.084232.084179.084634.083251.082906.081339.081930.080900.080697.079752.080573.078811.077634.077024.078348.077732.077514.076586.078077.077543.077844.078242.079201.079279.078747.079016.077874.077010.078301.079533.079540.079281.079994.080125.081761.081460.080009.079706.0NANANA82145.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▆▄▅▅▄▄▂▃▂▂▂▂▂▁▁▂▂▂▁▂▂▂▂▃▃▂▂▂▂▂▃▃▂▃▃▃▃▃▃119759.0117032.0116764.0116384.0113337.0109436.0110122.0110241.0108572.0107246.0104233.0104390.0103523.0103676.0103483.0104311.0102669.0101246.0100245.0102787.0102446.0101680.0100184.0102110.0101664.0102691.0103078.0104522.0104811.0104134.0103812.0102685.0101900.0103897.0104938.0105445.0104330.0104866.0104602.0106933.0106468.0105252.0105181.0NANANA109560.0NANANA
us-gaap:StockholdersEquity █▇█▇▆▄▅▄▄▃▁▁▁▂▂▂▂▂▂▃▃▃▂▃▃▃▃29156.028269.029201.027849.026943.025204.025943.025607.025321.024340.022894.022460.022623.022979.023731.023738.023858.023612.023221.024439.024714.024166.023598.024033.024121.024847.024836.0NANANA24796.0NANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Cash █▇█▆▇▆▅▅▄▃▃▃▄▄▃▃▃▂▂▂▂▃▃▃▃▂▃▃▂▂▂▂▂▂▃▁▁▂▁▁▂▂▁▂▂▂▂689.0663.0721.0583.0623.0544.0494.0508.0416.0357.0373.0359.0415.0397.0344.0379.0328.0249.0307.0269.0265.0361.0380.0344.0317.0308.0374.0367.0311.0260.0294.0295.0308.0243.0330.0220.0230.0258.0214.0231.0273.0239.0200.0298.0266.0251.0255.0NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▇▇█▅▆▅▄▄▂▁▁▁689.0663.0721.0583.0623.0544.0494.0508.0416.0357.0373.0359.0NANA344.0NANANA307.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AmortizationOfIntangibleAssets ▁▂▁▂▁▂▁▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▄▄▄▅▄▅▅▄▅▄▅▅▅▆▆▆▇███3.04.03.04.03.04.03.04.04.04.05.04.04.04.04.04.02.03.03.03.02.03.03.03.09.011.011.012.011.012.012.011.012.011.012.012.012.016.016.016.017.020.020.021.0NANANANANANA
us-gaap:Goodwill ███▇▇▇▇▇▇▇▇▇▇▇▇▇▃▃▃▃▃▃▃▃▃▃▄▄▄▄▄▁▁▁▁▁▁▁▁▁▁▁▁4020.04017.03976.03945.03925.03915.03961.03929.03943.03949.03937.03958.03931.03959.03951.03946.03589.03584.03580.03585.03588.03588.03573.03579.03594.03590.03611.03621.03634.03624.03634.03365.03365.03365.03365.03365.03365.03365.03365.03365.03365.03365.03365.0NANANA3365.0NANANA
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill ██▇▇▇▇▇▇▇▇▇▇▇███▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁227.0227.0226.0226.0226.0226.0226.0226.0226.0226.0226.0226.0226.0227.0227.0227.0217.0217.0217.0217.0217.0217.0217.0217.0217.0217.0217.0217.0217.0217.0217.0216.0216.0216.0216.0216.0216.0216.0216.0216.0216.0216.0216.0NANANA216.0NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▃▃▃▃▃▃▃▃▃▄▄▄▄▄▄▄▁▁▁▁▁▁▂▂▂▂▂▃▃▄▄▄▄▅▅▅▆▆▇▇█314.0318.0317.0318.0319.0322.0330.0329.0335.0341.0345.0351.0356.0341.0342.0345.0264.0266.0268.0271.0274.0275.0279.0280.0284.0292.0304.0316.0328.0339.0351.0347.0358.0370.0381.0393.0405.0417.0433.0449.0465.0NA502.0NANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet ▂▂▂▂▂▂▃▃▃▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▂▂▂▃▃▃▄▃▄▄▄▅▅▆▆▆▇▇█87.091.091.092.093.096.0104.0103.0109.0115.0119.0125.0130.0114.0115.0118.047.049.051.054.057.058.062.063.067.075.087.099.0111.0122.0134.0131.0142.0154.0165.0177.0189.0201.0217.0233.0249.0266.0286.0NANANA372.0NANANA
us-gaap:EquitySecuritiesFvNi NA477.0453.0410.0390.0342.0425.0412.0406.0400.0368.0426.0424.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:ConsolidatedEntities srt:ParentCompanyNANA241.0NANANA209.0NANANA171.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:InvestmentType us-gaap:CommonStockNA432.0410.0368.0351.0305.0383.0370.0363.0357.0316.0347.0342.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EquitySecuritiesFvNi us-gaap:InvestmentType us-gaap:NonredeemablePreferredStockNA45.043.042.039.037.042.042.043.043.052.079.082.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:AccruedIncomeTaxesCurrent NANA131.0NANANA126.0NANANANANANANANANANANA72.0NANANA50.0NANANA139.0NANANA85.0NANANA102.0NANANANANANANA265.0NANANA150.0NANANA
us-gaap:DebtCurrent NANA100.0NANANA600.0NANANA600.0NANANA600.0NANANA550.0NANANA500.0NANANA500.0NANANA100.0NANANA600.0NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:DeferredIncomeTaxLiabilitiesNet ▆▅█▇▆▁▃▃▂415.0293.0558.0448.0409.00.0137.0188.087.0NA0.0NANANANANANANANA171.0370.082.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA86.076.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA67.056.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA50.040.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA30.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA51.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquity █▇█▇▆▄▅▄▄▃▁▁▁▂▂▂▂▂▂▃▃▃▂▃▃▃▃29156.028269.029201.027849.026943.025204.025943.025607.025321.024340.022894.022460.022623.022979.023731.023738.023858.023612.023221.024439.024714.024166.023598.024033.024121.024847.024836.0NANANA24796.0NANANANANANANANANANANANANANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▂▂▁▁▁39998.039285.038771.037679.037069.037325.036977.036317.036135.035795.035204.034799.034296.033981.033462.033110.033016.032623.032196.031443.030921.030454.029945.029263.028524.027906.027251.026394.025662.025167.024291.023485.022806.022072.021352.021226.020541.020223.019579.019127.018966.019538.018847.018118.017285.016792.016315.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▆█▇▇▄▅▅▄▃▁▁▁▂▄▄▄▃▃▅▆▅▄▄▄▅▅▆▆▆▅▅▅▇██▇▇▇▇▇▆▆█▇▆▆1769.01291.02502.02138.01882.0-49.0640.0625.0206.0-682.0-1859.0-2003.0-1688.0-1322.0-343.0-285.0-344.0-615.0-755.0660.0965.0414.0-157.032.0169.0769.0880.01300.01562.01127.0810.0705.0720.01926.02236.02536.02130.02039.02005.02032.01711.01272.01255.02372.01690.01271.01219.0NANANA
us-gaap:TreasuryStockValue ████████▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▃▂▂▂▁▁36613.036212.035815.035614.035614.035614.035143.034767.034392.034016.033595.033425.033025.032675.032274.031923.031595.031120.030834.030083.029521.028971.028362.027361.026611.025810.025138.024137.023386.022510.021805.020804.020003.019702.019344.018942.018592.018241.017839.016651.016276.016003.014857.013245.012645.011231.09791.0NANANA
 us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents us-gaap:CommonStockIncludingAdditionalPaidInCapital▃█▃▂▂▆▁▂▃▅▄▂▂▅▂▁▁▄36.054.038.032.035.046.030.032.038.045.040.033.033.044.032.031.031.042.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▄▆█▅▁▄▇▃▁▃▆▃▁▁▅▂▂▃1849.01190.01901.02326.01664.0628.01412.02001.01153.0639.0948.01734.01144.0554.0538.01470.0906.0848.01139.0NANANANANANANANANANANANANANANANANANANANANA268.0633.0NANA520.0531.0NANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▅▅▁▂▇▅▃▇▅▆▃▇▆█▅▅▆▆-2011.0-774.0-915.0-2163.0-1898.084.0-855.0-1346.0-115.0-586.0-570.0-1302.0-76.0-381.0299.0-925.0-675.0-515.0-326.0NANANANANANANANANANANANANANANANANANANANANA125.0530.0NANA1246.0952.0NANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▄▂▅█▃▃▄▁▆▅▄▁▆▂▄▆▄▂188.0-477.0-864.0-210.0308.0-650.0-580.0-557.0-979.0-71.0-358.0-488.0-1044.0-122.0-872.0-498.0-157.0-393.0-771.0NANANANANANANANANANANANANANANANANANANANANA-359.0-1128.0NANA-1747.0-1486.0NANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▄▁█▂▆▅▃▆▅▂▄26.0-58.0138.0-40.079.050.0-14.092.059.0-16.014.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:DepreciationDepletionAndAmortization ▅█▅▂▂▄▁▁▂▅▃▃▃▅▄▄▃▅215.0235.0212.0186.0188.0203.0182.0180.0190.0211.0194.0198.0199.0212.0202.0202.0198.0211.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▄▆█▅▁▄▇▃▁▃▆▃▁▁▅▂▂▃1849.01190.01901.02326.01664.0628.01412.02001.01153.0639.0948.01734.01144.0554.0538.01470.0906.0848.01139.0NANANANANANANANANANANANANANANANANANANANANA268.0633.0NANA520.0531.0NANANANA
us-gaap:NetIncomeLoss ▆▅█▅▁▄▆▃▄▅▄▅▄▅▄▃▄▄▆▅▅▅▆▆▅▆▇▆▅▇934.0733.01310.0827.0-40.0600.0873.0396.0557.0796.0621.0709.0524.0669.0551.0293.0595.0617.0943.0716.0664.0691.0866.0928.0812.0833.01038.0919.0683.01052.0NANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▅▅▁▂▇▅▃▇▅▆▃▇▆█▅▅▆▆-2011.0-774.0-915.0-2163.0-1898.084.0-855.0-1346.0-115.0-586.0-570.0-1302.0-76.0-381.0299.0-925.0-675.0-515.0-326.0NANANANANANANANANANANANANANANANANANANANANA125.0530.0NANA1246.0952.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▄▂▅█▃▃▄▁▆▅▄▁▆▂▄▆▄▂188.0-477.0-864.0-210.0308.0-650.0-580.0-557.0-979.0-71.0-358.0-488.0-1044.0-122.0-872.0-498.0-157.0-393.0-771.0NANANANANANANANANANANANANANANANANANANANANA-359.0-1128.0NANA-1747.0-1486.0NANANANA
us-gaap:PaymentsOfDividendsCommonStock █▇▇▇▇▆▆▇▇▅▅▆▆▄▄▅▄▃▃▄▄▁▂▃▃▁222.0214.0218.0217.0216.0210.0211.0214.0214.0205.0203.0207.0207.0197.0196.0200.0199.0190.0188.0194.0195.0180.0182.0188.0192.0177.0NANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:Dividends us-gaap:StatementEquityComponents us-gaap:RetainedEarnings█▇▇▇▇▆▆▇▇▅▅▅▆▄▄▄▄▃▃▃▄▁▂▃▃▁224.0216.0218.0218.0218.0210.0212.0215.0217.0204.0205.0207.0209.0197.0198.0200.0201.0190.0191.0193.0197.0181.0183.0189.0194.0178.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▄▃▂▁▁▄▄▄▄▄▂▄▃▃▃▃▄▃▆▅▅▅█▆▇▅400.0356.0200.00.00.0425.0375.0375.0375.0375.0170.0400.0350.0350.0350.0328.0475.0225.0750.0550.0550.0550.01000.0750.0800.0600.0NANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ConsolidatedEntities,us-gaap:DebtInstrument,us-gaap:GuaranteeObligationsByNature,us-gaap:LongtermDebtType srt:ParentCompany,trv:SeniorNotes6.375PercentDueMarch2033,us-gaap:PaymentGuarantee,us-gaap:SeniorNotesNANA6.375e-06NANANA6.375e-08NANANA6.375e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ConsolidatedEntities,us-gaap:DebtInstrument,us-gaap:GuaranteeObligationsByNature,us-gaap:LongtermDebtType srt:ParentCompany,trv:SeniorNotes7.75PercentDueApril2026,us-gaap:PaymentGuarantee,us-gaap:SeniorNotesNANA7.75e-06NANANA7.75e-08NANANA7.75e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:JuniorSubordinatedDebentures7.625PercentDueDecember2027,us-gaap:JuniorSubordinatedDebtNANA7.625e-06NANANA7.625e-08NANANA7.625e-08NANANA7.625e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:JuniorSubordinatedDebentures8.312PercentDueJuly2046,us-gaap:JuniorSubordinatedDebtNANA8.312e-06NANANA8.312e-08NANANA8.312e-08NANANA8.312e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:JuniorSubordinatedDebentures8.50PercentDueDecember2045,us-gaap:JuniorSubordinatedDebtNANA8.5e-06NANANA8.500000000000001e-08NANANA8.500000000000001e-08NANANA8.500000000000001e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes3.75PercentDueMay2046,us-gaap:SeniorNotesNANA3.75e-06NANANA3.75e-08NANANA3.75e-08NANANA3.75e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes3.90PercentDueNovember2020,us-gaap:SeniorNotesNANA3.9e-06NANANA3.9e-08NANANA3.9e-08NANANA3.9e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes3050DueJune2051,us-gaap:SeniorNotesNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes4.00PercentDueMay2047,us-gaap:SeniorNotesNANA4e-06NANANA4e-08NANANA4e-08NANANA4e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes4.05DueMarch72048,us-gaap:SeniorNotesNANA4.05e-06NANANA4.05e-08NANANA4.05e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes4.10DueMarch2049,us-gaap:SeniorNotesNANA4.1e-06NANANA4.1e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes4.30PercentDueAugust2045,us-gaap:SeniorNotesNANA4.2999999999999995e-06NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANA4.2999999999999995e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes4.60PercentDueAugust2043,us-gaap:SeniorNotesNANA4.6e-06NANANA4.6e-08NANANA4.6e-08NANANA4.6e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes5.35PercentDueNovember2040,us-gaap:SeniorNotesNANA5.35e-06NANANA5.3499999999999996e-08NANANA5.3499999999999996e-08NANANA5.3499999999999996e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes6.25PercentDueJune2037,us-gaap:SeniorNotesNANA6.25e-06NANANA6.25e-08NANANA6.25e-08NANANA6.25e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes6.375PercentDueMarch2033,us-gaap:SeniorNotesNANA6.375e-06NANANA6.375e-08NANANA6.375e-08NANANA6.375e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes6.75PercentDueJune2036,us-gaap:SeniorNotesNANA6.75e-06NANANA6.75e-08NANANA6.75e-08NANANA6.75e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument,us-gaap:LongtermDebtType trv:SeniorNotes7.75PercentDueApril2026,us-gaap:SeniorNotesNANA7.75e-06NANANA7.75e-08NANANA7.75e-08NANANA7.75e-08NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA

Shares Issued

us-gaap:SharesIssued

us-gaap:SharesIssued


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value249251252253253252255258260262263264267270271273275279279284288292295304311318322331339347353364373376377382386389392412419420434520
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SharesIssued us-gaap:ConsolidatedEntities

srt:ParentCompany


Shares
Period End2020-12-312019-12-312018-12-312017-12-31
Value252255263271
Percentage of SharesIssued100.0100.0100.0100.0

Common Stock Shares Authorized

us-gaap:CommonStockSharesAuthorized

us-gaap:CommonStockSharesAuthorized


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value17501750175017501750175017501750175017501750175017501750175017501750175017501750175017501750175017501750175017501750175017501750175017501750175017501750175017501748174817481748
Percentage of CommonStockSharesAuthorized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value249251252253253252255258260261263264267270271273275279279284288292295304311318322331339347353364373376377382386389392412419420434460470497520585627
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value252255263271
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:StatementEquityComponents

us-gaap:CommonStock


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value249251252253253252255258260261263264267270271273275279279284288292295304311318322353377
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value253254254251255261263264268271273276280282289293297311318324338346354372379381387391395418418434472490515
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value250252253251254259261262266268271274277279286290294307314320335343350368375377384388392415418428465484508
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value3.72.895.133.24-0.162.343.371.522.113.012.332.651.932.452.01.062.132.193.322.482.272.332.873.02.562.583.152.721.982.982.732.332.442.360.792.231.272.041.520.8-0.881.941.982.141.371.262.391.661.271.12
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value3.662.875.13.23-0.162.333.351.52.12.992.322.621.922.421.981.052.112.173.282.452.242.32.832.972.532.553.112.691.952.952.72.32.412.330.782.211.262.021.510.79-0.881.921.952.111.351.252.361.651.271.11
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value36533533344630323545303333443231314231423250323131473231314430292941282628382727303730272942
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.40.60.40.40.50.60.40.40.40.60.40.40.40.60.40.40.40.60.40.60.50.70.50.50.50.70.50.50.50.70.40.40.40.60.40.40.40.60.40.40.50.60.50.40.50.7

Benefits Losses And Expenses

us-gaap:BenefitsLossesAndExpenses

us-gaap:BenefitsLossesAndExpenses


Benefits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value75567422678172897486718869897581716967047050691768466508659170056394618258916014589857695465548756305478532356285884523853665275549751086166534257515315559560757115530951355111529852624663507752215008
Percentage of BenefitsLossesAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues87.089.380.888.1101.190.986.794.691.587.490.489.691.689.388.595.689.089.181.986.486.986.381.980.884.082.778.581.786.778.179.681.882.480.795.282.090.483.287.894.8111.484.681.178.885.786.072.280.284.787.3

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1412-478.0167410831891-89.088881514451973765394158-264.0493352866757-472.04111215126267779121272259165475856-223.016871089699
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues16.3-5.819.913.125.6-1.111.010.218.425.79.85.12.1-3.66.64.812.110.9-6.65.917.918.910.111.63.210.99.310.21.213.6-3.526.017.611.4

Deferred Policy Acquisition Cost Amortization Expense

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value12541207121512071173117811811169113411171122111710811061107210591032100310131012989971972987963963983984965950970953950948977986976971976982970948957966950929
Percentage of DeferredPolicyAcquisitionCostAmortizationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues14.414.514.514.615.814.914.614.614.514.614.414.514.514.614.414.514.414.414.114.514.614.514.614.514.414.514.514.314.214.214.414.814.215.015.115.115.315.215.315.315.215.115.114.915.415.2

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value11318911616986-85.0720107443266596774680663177886032079076013029478879171209130710761148146012589011470137111771177122031111706081077778332-727.096911971371881857
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues13.010.719.211.9-1.19.113.35.48.512.69.610.48.410.711.54.411.010.918.113.613.113.718.119.216.017.321.518.313.321.920.418.217.619.34.818.09.616.812.25.2-11.415.418.921.214.314.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-26.0-25.0-22.0-20.0-22.0-21.0-14.0-12.0-13.0-13.0-21.0-22.0-21.0-22.0-18.0-27.0-18.0-17.0-16.0-15.0-15.0-16.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-2.3-2.8-1.4-2.025.9-2.9-1.3-2.8-2.0-1.3-2.8-2.7-3.3-2.8-2.1-8.4-2.3-2.2-1.2-1.6-1.7-1.7
Percentage of Revenues-0.3-0.3-0.3-0.2-0.3-0.3-0.2-0.1-0.2-0.2-0.3-0.3-0.3-0.3-0.2-0.4-0.3-0.2-0.2-0.2-0.2-0.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedOtherComprehensiveIncome


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-2.0-11.00.03.0-12.0-23.0-9.02.00.03.0-19.0-4.0-9.0-22.0523666-7.0-7.04.08.0-16.0-62.0-3.0-9.0-5.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-0.2-1.20.00.314.1-3.2-0.80.50.00.3-2.5-0.5-1.4-2.86.011.28.4-0.9-0.50.40.9-1.7-5.1-0.2-0.8-0.4
Percentage of Revenues-0.0-0.10.00.0-0.2-0.3-0.10.00.00.0-0.2-0.1-0.1-0.30.70.50.9-0.1-0.10.10.1-0.2-0.9-0.0-0.1-0.1
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value197158306159-45.01202013610817112597107109309271951433592312232263433792643154223392184183833132523247.0306109271160-1.0-363.013030336621121050831520165
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.31.93.61.9-0.61.52.50.41.42.21.61.31.41.54.10.42.72.15.03.33.33.45.15.63.94.86.24.93.26.25.74.93.85.10.14.71.74.22.5-0.0-5.72.14.85.63.43.47.95.03.31.1

us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-6.0-5.0-5.0-4.0-5.0-4.0-3.0-3.0-2.0-3.0-4.0-5.0-4.0-5.0-17.0-10.0-7.0-5.0-6.0-5.0-6.0-5.0-8.0-8.0-9.0-8.0-4.0-5.0-5.0-7.0-64.09.08.0-10.0
Percentage of IncomeTaxExpenseBenefit-3.0-3.2-1.6-2.511.1-3.3-1.5-8.3-1.9-1.8-3.2-5.2-3.7-4.6-5.5-37.0-3.6-3.5-1.7-2.2-2.7-2.2-2.3-2.1-3.4-2.5-0.9-1.5-2.3-1.7-16.72.93.2-3.1
Percentage of Revenues-0.1-0.1-0.1-0.0-0.1-0.1-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.90.10.1-0.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value5.02.00.03.03.03.03.01.03.03.02522303.03.07.08.04.0-4.07.06.06.02.00.08.02.042-1.0-12.06.0
Percentage of IncomeTaxExpenseBenefit3.1-4.40.01.58.32.81.80.83.12.88.181.515.42.10.83.03.61.8-1.21.82.31.90.50.03.70.511.0-0.3-4.81.9
Percentage of Revenues0.10.00.00.00.00.00.00.00.00.00.30.30.40.00.00.10.10.1-0.10.10.10.10.00.00.10.00.6-0.0-0.20.1
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedOtherComprehensiveIncome


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.0-2.0-1.01.0-3.0-4.00.00.01.00.0-3.0-2.0-1.0-5.08.01223-2.0-3.02.02.0-5.0-21.0-1.0-3.0-2.0
Percentage of IncomeTaxExpenseBenefit-0.5-1.3-0.30.66.7-3.30.00.00.90.0-2.4-2.1-0.9-4.62.644.411.8-1.4-0.80.90.9-2.2-6.1-0.3-1.1-0.6
Percentage of Revenues-0.0-0.0-0.00.0-0.0-0.10.00.00.00.0-0.0-0.0-0.0-0.10.10.20.3-0.0-0.00.00.0-0.1-0.3-0.0-0.0-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Income
Period End2021-06-302021-03-312020-06-30
Value5.03.02.0
Percentage of IncomeTaxExpenseBenefit2.51.9-4.4
Percentage of Revenues0.10.00.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value284581653962.01561423205.01646.018256471443212.024418140463325285471126362586349333322946827-122.01427620-59.0-14.0179112273
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.30.72.04.80.00.20.80.54.10.12.10.12.40.80.62.04.50.03.42.66.00.94.94.27.01.95.30.89.31.44.93.57.00.4-1.90.24.30.3-0.9-0.22.81.84.3

Insurance Commissions And Fees

us-gaap:InsuranceCommissionsAndFees

us-gaap:InsuranceCommissionsAndFees


Insurance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value101114108113121116109108109112103105113116113106116119117111112111111109110112107109107829790925982697974
Percentage of InsuranceCommissionsAndFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.21.51.41.41.51.51.41.41.41.51.41.41.51.61.61.51.71.81.71.71.61.71.71.61.61.71.61.61.71.21.51.41.40.91.31.11.21.2

us-gaap:InsuranceCommissionsAndFees us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Insurance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value1011141081131211161091081091121031051131161131061161191171111121111111091101121071091078297909259
Percentage of InsuranceCommissionsAndFees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.21.51.41.41.51.51.41.41.41.51.41.41.51.61.61.51.71.81.71.71.61.71.71.61.61.71.61.61.71.21.51.41.40.9
Percentage of Revenues us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InsuranceCommissionsAndFees us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Insurance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value9510810210811411110410310310799101108112109102111115114111112111111109110112107109107
Percentage of InsuranceCommissionsAndFees94.194.794.495.694.295.795.495.494.595.596.196.295.696.696.596.295.796.697.4100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.11.51.31.31.41.41.41.31.31.41.41.41.51.61.61.41.61.71.71.71.61.71.71.61.61.71.61.61.7
Percentage of Revenues us-gaap:OperatingSegments trv:BusinessAndInternationalInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, trv:PersonalInsurance


Insurance
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6.06.06.05.07.05.05.05.06.05.04.04.05.04.04.04.05.04.03.04.04.04.03.0
Percentage of InsuranceCommissionsAndFees5.95.35.64.45.84.34.64.65.54.53.93.84.43.43.53.84.33.42.63.63.63.62.7
Percentage of Revenues0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.0
Percentage of Revenues us-gaap:OperatingSegments trv:PersonalInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value8382838785848384898887869089939592899089939195949292
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.01.01.01.11.11.11.01.01.11.11.11.11.21.21.21.31.31.31.31.31.41.41.41.41.41.4

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value104591136010660107601215012250136391503913543
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.20.71.30.71.40.81.30.71.50.71.60.61.80.52.00.51.90.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value9347331310827-40.060087339655779662170952466955129359561794371666469186692881283310389196831052
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.88.815.610.0-0.57.610.84.97.110.48.09.27.09.27.44.08.38.913.110.39.810.313.013.712.112.615.313.310.115.7

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-20.0-20.0-17.0-16.0-17.0-17.0-11.0-9.0-11.0-10.0-17.0-17.0-17.0-17.0-1.0-17.0-11.0-12.0-10.0-10.0-9.0-11.0-15.0-15.0-15.0-15.0
Percentage of NetIncomeLoss-2.1-2.7-1.3-1.942.5-2.8-1.3-2.3-2.0-1.3-2.7-2.4-3.2-2.5-0.2-5.8-1.8-1.9-1.1-1.4-1.4-1.6-1.7-1.6-1.8-1.8
Percentage of Revenues-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.0-0.2-0.2-0.2-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value188.0-2.09.01110.0131.0159.04542547.07.012167.0-9.0131112
Percentage of NetIncomeLoss2.2-20.0-0.31.02.81.81.60.22.11.78.214.39.11.10.71.72.41.0-1.01.41.41.4
Percentage of Revenues0.20.1-0.00.10.10.10.20.00.20.10.60.60.80.10.10.20.20.1-0.10.20.20.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.0-9.01.02.0-9.0-19.0-9.02.0-1.03.0-16.0-2.0-8.0-17.0442443-5.0-4.02.06.0-11.0-41.0-2.0-6.0-3.0
Percentage of NetIncomeLoss-0.1-1.20.10.222.5-3.2-1.00.5-0.20.4-2.6-0.3-1.5-2.58.08.27.2-0.8-0.40.30.9-1.6-4.7-0.2-0.7-0.4
Percentage of Revenues-0.0-0.10.00.0-0.1-0.2-0.10.0-0.00.0-0.2-0.0-0.1-0.20.60.30.6-0.1-0.10.00.1-0.2-0.6-0.0-0.1-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value19118.0-2.0
Percentage of NetIncomeLoss2.01.5-20.0-0.3
Percentage of Revenues0.20.10.1-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value9347331310827-40.0600873396557796621709524669551293595617943716664691866928812833
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.88.815.610.0-0.57.610.84.97.110.48.09.27.09.27.44.08.38.913.110.39.810.313.013.712.112.6
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9277281300821-41.059586639355379161670452066454729159061393771065968685992280682710309126781045981858918890302858495800613331-366.0831886996665641
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.78.815.59.9-0.67.510.74.97.110.37.99.17.09.17.34.08.28.813.010.29.710.312.913.612.012.515.213.210.015.614.613.313.814.14.713.27.812.59.65.2-5.713.214.015.410.810.5

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9277281300821-41.059586639355379161670452066454729159061393771065968685992280682710309126781045981858918890302858495800613331-366.0832888998665642
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.78.815.59.9-0.67.510.74.97.110.37.99.17.09.17.34.08.28.813.010.29.710.312.913.612.012.515.213.210.015.614.613.313.814.14.713.27.812.59.65.2-5.713.314.015.410.810.5

Net Investment Income

us-gaap:NetInvestmentIncome

us-gaap:NetInvestmentIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value818701677671268611616622648582630646595603601588598610627582549544541614632592637719695736702657687670689722738740652690758779809735762753
Percentage of NetInvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.48.48.18.13.67.77.67.88.37.68.18.48.08.38.18.08.38.88.78.48.18.18.19.09.48.99.410.410.211.010.410.210.310.610.611.111.611.610.210.811.912.412.811.312.312.3

us-gaap:NetInvestmentIncome us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value818701677671268611616622648582630646595603601588598610627582549544541614632592637719695736702657687670689722738
Percentage of NetInvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.48.48.18.13.67.77.67.88.37.68.18.48.08.38.18.08.38.88.78.48.18.18.19.09.48.99.410.410.211.010.410.210.310.610.611.111.6
Percentage of Revenues us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetInvestmentIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BondAndSpecialtyInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value6459585842556059585661575758545756525453515254565756606462666563
Percentage of NetInvestmentIncome7.88.48.68.615.79.09.79.59.09.69.78.89.69.69.09.79.48.58.69.19.39.610.09.19.09.59.48.98.99.09.39.6
Percentage of Revenues0.70.70.70.70.60.70.70.70.70.70.80.70.80.80.70.80.80.70.80.80.80.80.80.80.80.80.90.90.91.01.01.0
Percentage of Revenues us-gaap:OperatingSegments trv:BondAndSpecialtyInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value615523502498180453451457481427465482440446449437447470483445420415412471487454490557539570543504
Percentage of NetInvestmentIncome75.274.674.274.267.274.173.273.574.273.473.874.673.974.074.774.374.777.077.076.576.576.376.276.777.176.776.977.577.677.477.476.7
Percentage of Revenues7.16.36.06.02.45.75.65.76.15.66.06.25.96.16.06.06.26.86.76.46.26.26.26.97.36.97.28.17.98.58.17.8
Percentage of Revenues us-gaap:OperatingSegments trv:BusinessAndInternationalInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, trv:PersonalInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value139119117115461031051061099910410798999894958890847877758788828798941009490949196101103
Percentage of NetInvestmentIncome17.017.017.317.117.216.917.017.016.817.016.516.616.516.416.316.015.914.414.414.414.214.213.914.213.913.913.713.613.513.613.413.713.713.613.914.014.0
Percentage of Revenues1.61.41.41.40.61.31.31.31.41.31.31.41.31.41.31.31.31.31.31.21.11.21.11.31.31.21.31.41.41.51.41.41.41.41.51.61.6
Percentage of Revenues us-gaap:OperatingSegments trv:PersonalInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Income

us-gaap:OtherIncome

us-gaap:OtherIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value88818486515872685772535739544940393114831315331212225363434416444135342034293727313434-29.0353232
Percentage of OtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.01.01.01.00.70.70.90.80.70.90.70.70.50.70.70.50.50.42.10.40.50.80.50.30.30.40.50.50.50.60.90.72.00.50.30.50.50.60.40.50.50.5-0.50.50.50.5

us-gaap:OtherIncome us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value8881848651587268577153553954493836301462828502818222536343342664713436283429
Percentage of OtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.098.6100.096.5100.0100.0100.095.092.396.898.690.390.394.390.385.7100.0100.0100.0100.097.1102.4103.1106.899.3105.9140.0100.0100.0
Percentage of Revenues1.01.01.01.00.70.70.90.80.70.90.70.70.50.70.70.50.50.42.00.40.40.70.40.30.30.40.50.50.50.61.00.72.00.60.40.50.5
Percentage of Revenues us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BondAndSpecialtyInsurance


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value7.05.010.07.05.05.07.07.06.06.07.05.05.06.08.05.06.05.07.04.06.03.08.04.05.05.04.05.06.04.05.05.0
Percentage of OtherIncome8.06.211.98.19.88.69.710.310.58.313.28.812.811.116.312.515.416.14.712.919.45.725.819.022.720.011.114.717.69.87.811.4
Percentage of Revenues0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.10.10.10.10.10.10.10.10.10.1
Percentage of Revenues us-gaap:OperatingSegments trv:BondAndSpecialtyInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value575351583631433930432833203126191510.012510.08.0335.05.05.08.01410.010.012258.0
Percentage of OtherIncome64.865.460.767.470.653.459.757.452.659.752.857.951.357.453.147.538.532.384.532.325.862.316.123.822.732.038.929.429.429.339.118.2
Percentage of Revenues0.70.60.60.70.50.40.50.50.40.60.40.40.30.40.30.30.20.11.70.10.10.50.10.10.10.10.20.10.10.20.40.1
Percentage of Revenues us-gaap:OperatingSegments trv:BusinessAndInternationalInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, trv:PersonalInsurance


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2423232110.02222222122181714171514151514141414159.012121819172636341518141716
Percentage of OtherIncome27.328.427.424.419.637.930.632.436.830.634.029.835.931.530.635.038.548.49.545.245.226.448.442.954.548.050.055.950.063.456.277.311.152.970.050.055.2
Percentage of Revenues0.30.30.30.30.10.30.30.30.30.30.20.20.20.20.20.20.20.20.20.20.20.20.20.10.20.20.30.30.30.40.50.50.20.30.20.30.3
Percentage of Revenues us-gaap:OperatingSegments trv:PersonalInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Policyholder Benefits And Claims Incurred Net

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5045497043414886510747894640523048214442477846554562429643424806422540943740385637623712336333823547343132093520382633153327329735303153416733593786336436174136514133823190321334193388
Percentage of PolicyholderBenefitsAndClaimsIncurredNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues58.159.851.759.069.060.657.565.361.557.961.360.361.059.058.365.658.859.052.055.455.455.550.449.852.951.847.351.156.449.449.451.152.949.864.351.659.552.656.864.680.553.950.449.655.355.4

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1110.09.08.09.09.06.04.06.05.09.09.08.09.07.0117.07.07.06.06.06.0
Percentage of PolicyholderBenefitsAndClaimsIncurredNet0.20.20.20.20.20.20.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.2
Percentage of Revenues0.10.10.10.10.10.10.10.00.10.10.10.10.10.10.10.20.10.10.10.10.10.1
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Premiums Earned Net

us-gaap:PremiumsEarnedNet

us-gaap:PremiumsEarnedNet


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7616738674807380695572297250717969886855694568826695653766266523635161836277620960675981602360325931588859795983592858235851566656035517563956665529552356115605550353715440542253405230
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues87.788.889.189.294.091.489.989.689.289.489.189.189.589.788.989.188.489.187.389.289.489.590.288.888.488.988.186.987.486.886.887.884.087.287.187.086.986.488.087.586.185.685.983.686.485.5

Realized Investment Gains Losses

us-gaap:RealizedInvestmentGainsLosses

us-gaap:RealizedInvestmentGainsLosses


Realized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302011-03-312010-03-31
Value6144503713-98.012232553602936-11.07061802025
Percentage of RealizedInvestmentGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.70.50.60.40.2-1.20.10.30.30.70.80.40.5-0.20.90.81.10.30.4

us-gaap:RealizedInvestmentGainsLosses us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Realized
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value2310.0-2.0121413162.01812706484
Percentage of RealizedInvestmentGainsLosses62.276.92.0100.060.952.030.23.362.133.3100.0104.9105.0
Percentage of Revenues0.30.1-0.00.10.20.20.20.00.20.20.90.91.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Realized
Period End2021-06-302021-03-312020-06-302020-03-31
Value241410.0-2.0
Percentage of RealizedInvestmentGainsLosses39.331.876.92.0
Percentage of Revenues0.30.20.1-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value86878313839782757401790880638013783476717796772374777286745173257184694271936961678566866674679467066626678368866785670867376452667463286477651263596392637364076388627863326482617961196456632761625735
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:SellingGeneralAndAdministrativeExpense


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value11741163114211091121113710851098112510571063105911131062108410451045996104810571054995102410281032995
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues13.514.013.613.415.114.413.513.714.413.813.613.714.914.614.514.314.514.314.615.215.514.915.315.115.415.0

us-gaap:SellingGeneralAndAdministrativeExpense us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Selling
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1515131213128.08.07.08.01213131311161110.01615151623232423
Percentage of SellingGeneralAndAdministrativeExpense1.31.31.11.11.21.10.70.70.60.81.11.21.21.21.01.51.11.01.51.41.41.62.22.22.32.3
Percentage of Revenues0.20.20.20.10.20.20.10.10.10.10.20.20.20.20.10.20.20.10.20.20.20.20.30.30.40.3
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value119759117032116764116384113337109436110122110241108572107246104233104390103523103676103483104311102669101246100245102787102446101680100184102110101664102691103078104522104811104134103812102685101900103897104938105445104330104866104602106933106468105252105181109560
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value35326320542926830131
Percentage of Assets30.329.128.129.1
Percentage of Assets30.329.128.129.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

trv:CorporateAndReconcilingItems


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value621608594631619555612712763573632710569537676359352345363283384
Percentage of Assets0.50.50.50.50.50.50.60.60.70.50.60.70.50.50.70.30.30.30.40.30.4
Percentage of Assets0.50.50.50.50.50.50.60.60.70.50.60.70.50.50.70.30.30.30.40.30.4
Percentage of Assets trv:CorporateAndReconcilingItems100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value1191381164241161701157531127181088811095101095291078091066731036011036801029541031391028071039521023171009019988210250410206810140399800101679101116102388102632104064104274103651103307102188101382104619
Percentage of Assets99.599.599.599.599.599.599.499.499.399.599.499.399.599.599.399.799.799.799.699.799.699.799.699.699.599.799.699.699.599.599.599.599.599.7
Percentage of Assets99.599.599.599.599.599.599.499.499.399.599.499.399.599.599.399.799.799.799.699.799.699.799.699.699.599.799.699.699.599.599.599.599.599.7
Percentage of Assets us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BondAndSpecialtyInsurance


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value100739488942094839155869085998708844583638693906087578787877690058998735872967945774575377360782875857637752578717648
Percentage of Assets8.48.18.18.18.17.97.87.97.87.88.38.78.58.58.58.68.87.37.37.77.67.47.37.77.57.47.37.57.4
Percentage of Assets8.48.18.18.18.17.97.87.97.87.88.38.78.58.58.58.68.87.37.37.77.67.47.37.77.57.47.37.57.4
Percentage of Assets us-gaap:OperatingSegments trv:BondAndSpecialtyInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value9021988657884228804086136835258389683876827628202278965786657850078747780827898577653803977946881232812148096179692809058083981892823098321882789
Percentage of Assets75.375.875.775.676.076.376.276.176.276.575.875.475.876.075.575.775.679.479.379.079.379.679.579.279.579.779.979.679.7
Percentage of Assets75.375.875.775.676.076.376.276.176.276.575.875.475.876.075.575.775.679.479.379.079.379.679.579.279.579.779.979.679.7
Percentage of Assets us-gaap:OperatingSegments trv:BusinessAndInternationalInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, trv:PersonalInsurance


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value18846182791832818230174271666617015169451660216288159431595515697156051594915962156661314613118133271310912905127481294612692128591279812975129481284112870131731316014195
Percentage of Assets15.715.615.715.715.415.215.515.415.315.215.315.315.215.115.415.315.313.013.113.012.812.712.712.712.512.512.412.412.412.312.412.812.913.5
Percentage of Assets15.715.615.715.715.415.215.515.415.315.215.315.315.215.115.415.315.313.013.113.012.812.712.712.712.512.512.412.412.412.312.412.812.913.5
Percentage of Assets us-gaap:OperatingSegments trv:PersonalInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value9060388763875638853586394842328417984634832518290681339819308090080697797528057378811776347702478348777327751476586780777754377844782427920179279787477901677874770107830179533795407928179994801258176181460800097970682145
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets75.775.875.076.176.277.076.476.876.777.378.078.578.177.877.177.276.876.776.876.275.976.276.476.576.375.875.975.875.675.676.175.875.675.475.875.476.076.376.676.576.576.075.875.0

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value6118610463676402
Percentage of Liabilities7.07.37.88.0
Percentage of Assets5.25.56.16.2
Percentage of Assets srt:ParentCompany17.319.021.821.2

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value119759117032116764116384113337109436110122110241108572107246104233104390103523103676103483104311102669101246100245102787102446101680100184102110101664102691103078104522104811104134103812102685101900103897104938105445104330104866104602106933106468105252105181109560
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value35326320542926830131
Percentage of LiabilitiesAndStockholdersEquity30.329.128.129.1
Percentage of Assets30.329.128.129.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value29156282692920127849269432520425943256072532124340228942246022623229792373123738238582361223221244392471424166235982403324121248472483624796
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.324.225.023.923.823.023.623.223.322.722.021.521.922.222.922.823.223.323.223.824.123.823.623.523.724.224.123.9

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value29208259502290123729
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets25.023.622.022.9
Percentage of Assets srt:ParentCompany82.781.078.278.8

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value-792.0-812.0-832.0-795.0-811.0-828.0-846.0-841.0-852.0-863.0-873.0-776.0-793.0-810.0-686.0-686.0-680.0-691.0-703.0-680.0-690.0-702.0-713.0-755.0-431.0-857.0
Percentage of StockholdersEquity-2.7-2.9-2.8-2.9-3.0-3.3-3.3-3.3-3.4-3.5-3.8-3.5-3.5-3.5-2.9-2.9-2.9-2.9-3.0-2.8-2.8-2.9-3.0-3.0-1.70.0
Percentage of Assets-0.7-0.7-0.7-0.7-0.7-0.8-0.8-0.8-0.8-0.8-0.8-0.7-0.8-0.8-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.4-0.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value363034591600205721621684810-306.0-642.0-315.0-80.07478028326215281845214115671100176811252908
Percentage of StockholdersEquity13.012.86.37.98.46.73.3-1.3-2.9-1.4-0.33.13.43.52.62.37.58.76.54.77.14.50.0
Percentage of Assets3.13.11.51.92.01.60.8-0.3-0.6-0.3-0.10.70.80.80.60.51.82.11.51.11.71.12.8
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value17691291250221381882-49.0640625206-682.0-1859.0-2003.0-1688.0-1322.0-343.0-285.0-344.0-615.0-755.0660965414-157.0321697698808102236
Percentage of StockholdersEquity6.14.68.67.77.0-0.22.52.40.8-2.8-8.1-8.9-7.5-5.8-1.4-1.2-1.4-2.6-3.32.73.91.7-0.70.10.73.13.53.30.0
Percentage of Assets1.51.12.11.81.7-0.00.60.60.2-0.6-1.8-1.9-1.6-1.3-0.3-0.3-0.3-0.6-0.80.60.90.4-0.20.00.20.70.90.82.1
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value182187185189192194197193195203213207204203202202204200192189198197195
Percentage of StockholdersEquity0.70.70.70.70.70.80.80.80.90.90.90.90.90.90.90.90.80.80.80.80.80.80.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2
Percentage of Assets us-gaap:AccumulatedOtherThanTemporaryImpairment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value-678.0-714.0-740.0-879.0-953.0-1006.0-760.0-888.0-820.0-826.0-873.0-780.0-783.0-645.0-611.0-605.0-699.0-747.0-782.0-709.0-686.0-643.0-733.0-331.0-81.0-10.0
Percentage of StockholdersEquity-2.3-2.5-2.5-3.2-3.5-4.0-2.9-3.5-3.2-3.4-3.8-3.5-3.5-2.8-2.6-2.5-2.9-3.2-3.4-2.9-2.8-2.7-3.1-1.3-0.30.0
Percentage of Assets-0.6-0.6-0.6-0.8-0.8-0.9-0.7-0.8-0.8-0.8-0.8-0.7-0.8-0.6-0.6-0.6-0.7-0.7-0.8-0.7-0.7-0.6-0.7-0.3-0.1-0.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent


Stockholders
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value182182182189193207
Percentage of StockholdersEquity0.60.60.60.70.80.9
Percentage of Assets0.20.20.20.20.20.2
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent0.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Stockholders
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value3057263538922057-306.0747
Percentage of StockholdersEquity10.59.313.37.9-1.33.1
Percentage of Assets2.62.33.31.9-0.30.7
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value2400223905237432364623606235422346923432233722324323144230892304022995228862283622781227242261422419223492226922172220992203921982218432150021161
Percentage of StockholdersEquity82.384.681.384.987.693.490.591.592.395.5101.1102.8101.8100.196.496.295.596.297.491.790.492.294.092.091.488.587.986.70.0
Percentage of Assets20.020.420.320.320.821.521.321.321.521.722.222.122.322.222.121.922.222.422.621.821.821.922.121.621.721.421.220.720.2
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value3999839285387713767937069373253697736317361353579535204347993429633981334623311033016326233219631443309213045429945292632852427906272512429121352
Percentage of StockholdersEquity137.2139.0132.8135.3137.6148.1142.5141.8142.7147.1153.8154.9151.6147.9141.0139.5138.4138.2138.7128.7125.1126.0126.9121.8118.3112.3109.798.00.0
Percentage of Assets33.433.633.232.432.734.133.632.933.333.433.833.333.132.832.331.732.232.232.130.630.230.029.928.728.127.226.423.420.3
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value-36613.0-36212.0-35815.0-35614.0-35614.0-35614.0-35143.0-34767.0-34392.0-34016.0-33595.0-33425.0-33025.0-32675.0-32274.0-31923.0-31595.0-31120.0-30834.0-30083.0-29521.0-28971.0-28362.0-27361.0-26611.0-25810.0-25138.0-21805.0-19344.0
Percentage of StockholdersEquity-125.6-128.1-122.6-127.9-132.2-141.3-135.5-135.8-135.8-139.8-146.7-148.8-146.0-142.2-136.0-134.5-132.4-131.8-132.8-123.1-119.5-119.9-120.2-113.8-110.3-103.9-101.2-87.90.0
Percentage of Assets-30.6-30.9-30.7-30.6-31.4-32.5-31.9-31.5-31.7-31.7-32.2-32.0-31.9-31.5-31.2-30.6-30.8-30.7-30.8-29.3-28.8-28.5-28.3-26.8-26.2-25.1-24.4-21.0-18.4
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash

us-gaap:Cash

us-gaap:Cash


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value689663721583623544494508416357373359415397344379328249307269265361380344317308374367311260294295308243330220230258214231273239200298266251255350271
Percentage of Cash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.50.50.50.40.50.40.30.40.30.40.40.30.40.30.20.30.30.30.40.40.30.30.30.40.40.30.20.30.30.30.20.30.20.20.20.20.20.30.20.20.00.00.00.20.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-31
Value689663721583623544494508416357373359344307
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.50.50.50.40.50.40.30.40.30.30.3

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value3.04.03.04.03.04.03.04.04.04.05.04.04.04.04.04.02.03.03.03.02.03.03.03.09.011111211121211121112121216161617202021
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value40204017397639453925391539613929394339493937395839313959395139463589358435803585358835883573357935943590361136213634362436343365336533653365336533653365336533653365336533653365
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.43.43.43.53.63.63.63.63.73.83.83.83.83.83.83.53.53.63.53.53.53.63.53.53.53.53.53.53.53.53.33.33.23.23.23.23.23.23.13.23.23.23.1

us-gaap:Goodwill us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BondAndSpecialtyInsurance


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value550550550550550550550550550550550550550550550550550497496496496496496496495495495495495
Percentage of Goodwill13.713.713.813.914.014.013.914.013.913.914.013.914.013.913.913.915.313.913.913.813.813.813.913.913.813.813.713.713.6
Percentage of Assets0.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.5
Percentage of Assets us-gaap:OperatingSegments trv:BondAndSpecialtyInsurance5.55.85.85.86.06.36.46.36.56.66.36.16.36.36.36.16.16.86.86.26.46.66.76.36.56.56.66.36.5

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value26192618261325892573257026012572258425942585259725732597258525792229244924462451245424542439244324592455247624862499
Percentage of Goodwill65.165.265.765.665.665.665.765.565.565.765.765.665.565.665.465.462.168.368.368.468.468.468.368.368.468.468.668.768.8
Percentage of Assets2.22.22.22.22.32.32.42.32.42.42.52.52.52.52.52.52.22.42.42.42.42.42.42.42.42.42.42.42.4
Percentage of Assets us-gaap:OperatingSegments trv:BusinessAndInternationalInsurance2.93.03.02.93.03.13.13.13.13.23.33.33.33.33.33.32.93.03.13.03.03.03.13.03.03.03.03.03.0

us-gaap:OperatingSegments, trv:PersonalInsurance


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value825823787780776769784781783779776785782786790791784612612612612612612612613613613613613613613613613613
Percentage of Goodwill20.520.519.819.819.819.619.819.919.919.719.719.819.919.920.020.021.817.117.117.117.117.117.117.117.117.117.016.916.916.916.918.218.218.2
Percentage of Assets0.70.70.70.70.70.70.70.70.70.70.70.80.80.80.80.80.80.60.60.60.60.60.60.60.60.60.60.60.60.60.60.60.60.6
Percentage of Assets us-gaap:OperatingSegments trv:PersonalInsurance4.44.54.34.34.54.64.64.64.74.84.94.95.05.05.05.05.04.74.74.64.74.74.84.74.84.84.84.74.74.84.84.74.74.3

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill


Indefinite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value227227226226226226226226226226226226226227227227217217217217217217217217217217217217217217217216216216216216216216216216216216216216
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value314318317318319322330329335341345351356341342345264266268271274275279280284292304316328339351347358370381393405417433449465502
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.30.40.40.40.40.40.40.40.40.40.5

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value879191929396104103109115119125130114115118474951545758626367758799111122134131142154165177189201217233249266286372
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.30.30.3

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ContractBasedIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value19202122232426272930333637394251
Percentage of FiniteLivedIntangibleAssetsNet21.822.023.123.924.725.025.026.226.626.127.728.828.534.236.5100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.1
Percentage of Assets us-gaap:ContractBasedIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelatedIntangibleAssets


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value6871707070727876808586899375731.06.01422313846495772
Percentage of FiniteLivedIntangibleAssetsNet78.278.076.976.175.375.075.073.873.473.972.371.271.565.863.51.58.016.122.227.931.134.337.440.143.6
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.00.00.00.00.00.00.10.1
Percentage of Assets us-gaap:CustomerRelatedIntangibleAssets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value477453410390342425412406400368426424
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.30.30.40.40.40.40.40.40.4

us-gaap:EquitySecuritiesFvNi us-gaap:ConsolidatedEntities

srt:ParentCompany


Equity
Period End2020-12-312019-12-312018-12-31
Value241209171
Percentage of EquitySecuritiesFvNi53.249.246.5
Percentage of Assets0.20.20.2
Percentage of Assets srt:ParentCompany0.70.70.6

us-gaap:EquitySecuritiesFvNi us-gaap:InvestmentType

us-gaap:CommonStock


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value432410368351305383370363357316347342
Percentage of EquitySecuritiesFvNi90.690.589.890.089.290.189.889.489.285.981.580.7
Percentage of Assets0.40.40.30.30.30.30.30.30.30.30.30.3
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NonredeemablePreferredStock


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value454342393742424343527982
Percentage of EquitySecuritiesFvNi9.49.510.210.010.89.910.210.610.814.118.519.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.10.1
Percentage of Assets us-gaap:NonredeemablePreferredStock0.00.00.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value32223219317332263095311331103216331532122872302428542788286426042443244323772366238424082318240324932511237725422778256725652229229322872234225924182266240226582641224521542132
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.72.82.72.82.72.82.82.93.13.02.82.92.82.72.82.52.42.42.42.32.32.42.32.42.52.42.32.42.72.52.52.22.32.22.12.12.32.22.32.52.52.12.01.9

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2020-12-312019-12-312016-12-312015-12-312014-12-312013-12-312012-12-312010-12-312009-12-31
Value131126725013985102265150
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.00.10.10.10.30.1

Debt Current

us-gaap:DebtCurrent

us-gaap:DebtCurrent


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value100600600600550500500100600
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.50.60.60.50.50.50.10.6

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312016-09-302016-06-302016-03-31
Value4152935584484090.0137188870.017137082
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0
Percentage of Assets0.30.30.50.40.40.00.10.20.10.00.20.40.1

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-312020-09-30
Value8676
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0
Percentage of Assets0.10.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-312020-09-30
Value6756
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0
Percentage of Assets0.10.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-312020-09-30
Value5040
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0
Percentage of Assets0.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value30
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value51
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value362337380391395384
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.40.40.4

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-312020-09-30
Value387362
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0
Percentage of Assets0.30.3

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value29156282692920127849269432520425943256072532124340228942246022623229792373123738238582361223221244392471424166235982403324121248472483624796
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.324.225.023.923.823.023.623.223.322.722.021.521.922.222.922.823.223.323.223.824.123.823.623.523.724.224.123.9

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value29208259502290123729
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets25.023.622.022.9
Percentage of Assets srt:ParentCompany82.781.078.278.8

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value-792.0-812.0-832.0-795.0-811.0-828.0-846.0-841.0-852.0-863.0-873.0-776.0-793.0-810.0-686.0-686.0-680.0-691.0-703.0-680.0-690.0-702.0-713.0-755.0-431.0-857.0
Percentage of StockholdersEquity-2.7-2.9-2.8-2.9-3.0-3.3-3.3-3.3-3.4-3.5-3.8-3.5-3.5-3.5-2.9-2.9-2.9-2.9-3.0-2.8-2.8-2.9-3.0-3.0-1.70.0
Percentage of Assets-0.7-0.7-0.7-0.7-0.7-0.8-0.8-0.8-0.8-0.8-0.8-0.7-0.8-0.8-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.7-0.4-0.8
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value363034591600205721621684810-306.0-642.0-315.0-80.07478028326215281845214115671100176811252908
Percentage of StockholdersEquity13.012.86.37.98.46.73.3-1.3-2.9-1.4-0.33.13.43.52.62.37.58.76.54.77.14.50.0
Percentage of Assets3.13.11.51.92.01.60.8-0.3-0.6-0.3-0.10.70.80.80.60.51.82.11.51.11.71.12.8
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value17691291250221381882-49.0640625206-682.0-1859.0-2003.0-1688.0-1322.0-343.0-285.0-344.0-615.0-755.0660965414-157.0321697698808102236
Percentage of StockholdersEquity6.14.68.67.77.0-0.22.52.40.8-2.8-8.1-8.9-7.5-5.8-1.4-1.2-1.4-2.6-3.32.73.91.7-0.70.10.73.13.53.30.0
Percentage of Assets1.51.12.11.81.7-0.00.60.60.2-0.6-1.8-1.9-1.6-1.3-0.3-0.3-0.3-0.6-0.80.60.90.4-0.20.00.20.70.90.82.1
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Stockholders
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value182187185189192194197193195203213207204203202202204200192189198197195
Percentage of StockholdersEquity0.70.70.70.70.70.80.80.80.90.90.90.90.90.90.90.90.80.80.80.80.80.80.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.2
Percentage of Assets us-gaap:AccumulatedOtherThanTemporaryImpairment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-312012-12-31
Value-678.0-714.0-740.0-879.0-953.0-1006.0-760.0-888.0-820.0-826.0-873.0-780.0-783.0-645.0-611.0-605.0-699.0-747.0-782.0-709.0-686.0-643.0-733.0-331.0-81.0-10.0
Percentage of StockholdersEquity-2.3-2.5-2.5-3.2-3.5-4.0-2.9-3.5-3.2-3.4-3.8-3.5-3.5-2.8-2.6-2.5-2.9-3.2-3.4-2.9-2.8-2.7-3.1-1.3-0.30.0
Percentage of Assets-0.6-0.6-0.6-0.8-0.8-0.9-0.7-0.8-0.8-0.8-0.8-0.7-0.8-0.6-0.6-0.6-0.7-0.7-0.8-0.7-0.7-0.6-0.7-0.3-0.1-0.0
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent


Stockholders
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value182182182189193207
Percentage of StockholdersEquity0.60.60.60.70.80.9
Percentage of Assets0.20.20.20.20.20.2
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent0.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Stockholders
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value3057263538922057-306.0747
Percentage of StockholdersEquity10.59.313.37.9-1.33.1
Percentage of Assets2.62.33.31.9-0.30.7
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.00.00.00.0

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value2400223905237432364623606235422346923432233722324323144230892304022995228862283622781227242261422419223492226922172220992203921982218432150021161
Percentage of StockholdersEquity82.384.681.384.987.693.490.591.592.395.5101.1102.8101.8100.196.496.295.596.297.491.790.492.294.092.091.488.587.986.70.0
Percentage of Assets20.020.420.320.320.821.521.321.321.521.722.222.122.322.222.121.922.222.422.621.821.821.922.121.621.721.421.220.720.2
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value3999839285387713767937069373253697736317361353579535204347993429633981334623311033016326233219631443309213045429945292632852427906272512429121352
Percentage of StockholdersEquity137.2139.0132.8135.3137.6148.1142.5141.8142.7147.1153.8154.9151.6147.9141.0139.5138.4138.2138.7128.7125.1126.0126.9121.8118.3112.3109.798.00.0
Percentage of Assets33.433.633.232.432.734.133.632.933.333.433.833.333.132.832.331.732.232.232.130.630.230.029.928.728.127.226.423.420.3
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value-36613.0-36212.0-35815.0-35614.0-35614.0-35614.0-35143.0-34767.0-34392.0-34016.0-33595.0-33425.0-33025.0-32675.0-32274.0-31923.0-31595.0-31120.0-30834.0-30083.0-29521.0-28971.0-28362.0-27361.0-26611.0-25810.0-25138.0-21805.0-19344.0
Percentage of StockholdersEquity-125.6-128.1-122.6-127.9-132.2-141.3-135.5-135.8-135.8-139.8-146.7-148.8-146.0-142.2-136.0-134.5-132.4-131.8-132.8-123.1-119.5-119.9-120.2-113.8-110.3-103.9-101.2-87.90.0
Percentage of Assets-30.6-30.9-30.7-30.6-31.4-32.5-31.9-31.5-31.7-31.7-32.2-32.0-31.9-31.5-31.2-30.6-30.8-30.7-30.8-29.3-28.8-28.5-28.3-26.8-26.2-25.1-24.4-21.0-18.4
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value39998392853877137679370693732536977363173613535795352043479934296339813346233110330163262332196314433092130454299452926328524279062725126394256622516724291234852280622072213522122620541202231957919127189661953818847181181728516792163151331411110
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets33.433.633.232.432.734.133.632.933.333.433.833.333.132.832.331.732.232.232.130.630.230.029.928.728.127.226.425.324.524.223.422.922.421.220.320.119.719.318.717.917.818.617.90.00.00.014.90.00.0

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-312017-12-31
Value38778369843521133460
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets33.233.633.832.3
Percentage of Assets srt:ParentCompany109.8115.4120.3111.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value17691291250221381882-49.0640625206-682.0-1859.0-2003.0-1688.0-1322.0-343.0-285.0-344.0-615.0-755.0660965414-157.03216976988013001562112781070572019262236253621302039200520321711127212552372169012711219-900.0670
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.51.12.11.81.7-0.00.60.60.2-0.6-1.8-1.9-1.6-1.3-0.3-0.3-0.3-0.6-0.80.60.90.4-0.20.00.20.70.91.21.51.10.80.70.71.92.12.42.01.91.91.91.61.21.20.00.00.01.10.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value2502640-1859.0-343.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets2.10.6-1.8-0.3
Percentage of Assets srt:ParentCompany7.12.0-6.4-1.1

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

trv:AccumulatedNetUnrealizedInvestmentGainLossAndOtherThanTemporaryImpairment


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value40742246-113.0954730128919661322310328711859
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax162.8350.96.1-278.1-96.7-821.0223.4163.2138.8143.2148.1
Percentage of Assets3.52.0-0.10.90.71.31.91.33.02.71.8
Percentage of Assets trv:AccumulatedNetUnrealizedInvestmentGainLossAndOtherThanTemporaryImpairment0.00.00.00.00.00.00.00.00.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value36613362123581535614356143561435143347673439234016335953342533025326753227431923315953112030834300832952128971283622736126611258102513824137233862251021805208042000319702193441894218592182411783916651162761600314857132451264511231979164264266
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.630.930.730.631.432.531.931.531.731.732.232.031.931.531.230.630.830.730.829.328.828.528.326.826.225.124.423.122.321.621.020.319.619.018.418.017.817.417.115.615.315.214.10.00.00.08.90.00.0

us-gaap:TreasuryStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Treasury
Period End2020-12-312019-12-312018-12-312017-12-31
Value35815351433359532274
Percentage of TreasuryStockValue100.0100.0100.0100.0
Percentage of Assets30.731.932.231.2
Percentage of Assets srt:ParentCompany101.4109.6114.8107.1

Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value365438323546303238454033334432313142
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStockIncludingAdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value184911901901232616646281412200111536399481734114455453814709068481139268633520531
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues21.314.322.628.122.57.917.525.014.78.312.222.515.37.67.220.112.612.215.84.210.18.48.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value-2011.0-774.0-915.0-2163.0-1898.084-855.0-1346.0-115.0-586.0-570.0-1302.0-76.0-381.0299-925.0-675.0-515.0-326.01255301246952
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-23.1-9.3-10.9-26.1-25.61.1-10.6-16.8-1.5-7.6-7.3-16.9-1.0-5.24.0-12.6-9.4-7.4-4.52.08.420.215.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value188-477.0-864.0-210.0308-650.0-580.0-557.0-979.0-71.0-358.0-488.0-1044.0-122.0-872.0-498.0-157.0-393.0-771.0-359.0-1128.0-1747.0-1486.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.2-5.7-10.3-2.54.2-8.2-7.2-7.0-12.5-0.9-4.6-6.3-14.0-1.7-11.7-6.8-2.2-5.7-10.7-5.6-18.0-28.3-24.3

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value26-58.0138-40.07950-14.09259-16.014
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.3-0.71.6-0.51.10.6-0.21.10.8-0.20.2

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value215235212186188203182180190211194198199212202202198211
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value184911901901232616646281412200111536399481734114455453814709068481139268633520531
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues21.314.322.628.122.57.917.525.014.78.312.222.515.37.67.220.112.612.215.84.210.18.48.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value9347331310827-40.060087339655779662170952466955129359561794371666469186692881283310389196831052
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.88.815.610.0-0.57.610.84.97.110.48.09.27.09.27.44.08.38.913.110.39.810.313.013.712.112.615.313.310.115.7

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-20.0-20.0-17.0-16.0-17.0-17.0-11.0-9.0-11.0-10.0-17.0-17.0-17.0-17.0-1.0-17.0-11.0-12.0-10.0-10.0-9.0-11.0-15.0-15.0-15.0-15.0
Percentage of NetIncomeLoss-2.1-2.7-1.3-1.942.5-2.8-1.3-2.3-2.0-1.3-2.7-2.4-3.2-2.5-0.2-5.8-1.8-1.9-1.1-1.4-1.4-1.6-1.7-1.6-1.8-1.8
Percentage of Revenues-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.0-0.2-0.2-0.2-0.1-0.1-0.1-0.2-0.2-0.2-0.2-0.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value188.0-2.09.01110.0131.0159.04542547.07.012167.0-9.0131112
Percentage of NetIncomeLoss2.2-20.0-0.31.02.81.81.60.22.11.78.214.39.11.10.71.72.41.0-1.01.41.41.4
Percentage of Revenues0.20.1-0.00.10.10.10.20.00.20.10.60.60.80.10.10.20.20.1-0.10.20.20.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.0-9.01.02.0-9.0-19.0-9.02.0-1.03.0-16.0-2.0-8.0-17.0442443-5.0-4.02.06.0-11.0-41.0-2.0-6.0-3.0
Percentage of NetIncomeLoss-0.1-1.20.10.222.5-3.2-1.00.5-0.20.4-2.6-0.3-1.5-2.58.08.27.2-0.8-0.40.30.9-1.6-4.7-0.2-0.7-0.4
Percentage of Revenues-0.0-0.10.00.0-0.1-0.2-0.10.0-0.00.0-0.2-0.0-0.1-0.20.60.30.6-0.1-0.10.00.1-0.2-0.6-0.0-0.1-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value19118.0-2.0
Percentage of NetIncomeLoss2.01.5-20.0-0.3
Percentage of Revenues0.20.10.1-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value9347331310827-40.0600873396557796621709524669551293595617943716664691866928812833
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.88.815.610.0-0.57.610.84.97.110.48.09.27.09.27.44.08.38.913.110.39.810.313.013.712.112.6
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value-2011.0-774.0-915.0-2163.0-1898.084-855.0-1346.0-115.0-586.0-570.0-1302.0-76.0-381.0299-925.0-675.0-515.0-326.01255301246952
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-23.1-9.3-10.9-26.1-25.61.1-10.6-16.8-1.5-7.6-7.3-16.9-1.0-5.24.0-12.6-9.4-7.4-4.52.08.420.215.6

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value188-477.0-864.0-210.0308-650.0-580.0-557.0-979.0-71.0-358.0-488.0-1044.0-122.0-872.0-498.0-157.0-393.0-771.0-359.0-1128.0-1747.0-1486.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues2.2-5.7-10.3-2.54.2-8.2-7.2-7.0-12.5-0.9-4.6-6.3-14.0-1.7-11.7-6.8-2.2-5.7-10.7-5.6-18.0-28.3-24.3

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value222214218217216210211214214205203207207197196200199190188194195180182188192177
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Dividends

us-gaap:Dividends us-gaap:StatementEquityComponents

us-gaap:Dividends

us-gaap:RetainedEarnings


Dividendsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value224216218218218210212215217204205207209197198200201190191193197181183189194178
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4003562000.00.04253753753753751704003503503503284752257505505505501000750800600
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:GuaranteeObligationsByNature, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentInterestRateStatedPercentage

srt:ParentCompany, trv:SeniorNotes6.375PercentDueMarch2033, us-gaap:PaymentGuarantee, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-31
Value6.3750.063750.06375
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:ParentCompany trv:SeniorNotes6.375PercentDueMarch2033 us-gaap:PaymentGuarantee us-gaap:SeniorNotes0.00.00.0

srt:ParentCompany, trv:SeniorNotes7.75PercentDueApril2026, us-gaap:PaymentGuarantee, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-31
Value7.750.07750.0775
Percentage of DebtInstrumentInterestRateStatedPercentage121.6121.6121.6
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations srt:ParentCompany trv:SeniorNotes7.75PercentDueApril2026 us-gaap:PaymentGuarantee us-gaap:SeniorNotes0.00.00.0

us-gaap:DebtInstrumentInterestRateStatedPercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trv:JuniorSubordinatedDebentures7.625PercentDueDecember2027, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.6250.076250.076250.07625
Percentage of DebtInstrumentInterestRateStatedPercentage119.6119.6119.60.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:JuniorSubordinatedDebentures7.625PercentDueDecember2027 us-gaap:JuniorSubordinatedDebt0.00.00.00.0

trv:JuniorSubordinatedDebentures8.312PercentDueJuly2046, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value8.3120.083120.083120.08312
Percentage of DebtInstrumentInterestRateStatedPercentage130.4130.4130.40.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:JuniorSubordinatedDebentures8.312PercentDueJuly2046 us-gaap:JuniorSubordinatedDebt0.00.00.00.0

trv:JuniorSubordinatedDebentures8.50PercentDueDecember2045, us-gaap:JuniorSubordinatedDebt


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value8.50.0850.0850.085
Percentage of DebtInstrumentInterestRateStatedPercentage133.3133.3133.30.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:JuniorSubordinatedDebentures8.50PercentDueDecember2045 us-gaap:JuniorSubordinatedDebt0.00.00.00.0

trv:SeniorNotes3.75PercentDueMay2046, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-05-11
Value3.750.03750.03750.03750.0375
Percentage of DebtInstrumentInterestRateStatedPercentage58.858.858.80.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes3.75PercentDueMay2046 us-gaap:SeniorNotes0.00.00.00.00.0

trv:SeniorNotes3.90PercentDueNovember2020, us-gaap:SeniorNotes


Debt
Period End2020-12-312020-11-012019-12-312018-12-312017-12-31
Value3.93.90.0390.0390.039
Percentage of DebtInstrumentInterestRateStatedPercentage61.20.061.261.20.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes3.90PercentDueNovember2020 us-gaap:SeniorNotes0.00.00.00.00.0

trv:SeniorNotes3050DueJune2051, us-gaap:SeniorNotes


Debt
Period End2021-06-08
Value3.05
Percentage of DebtInstrumentInterestRateStatedPercentage0.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes3050DueJune2051 us-gaap:SeniorNotes0.0

trv:SeniorNotes4.00PercentDueMay2047, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-312017-05-22
Value4.00.040.040.040.04
Percentage of DebtInstrumentInterestRateStatedPercentage62.762.762.70.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes4.00PercentDueMay2047 us-gaap:SeniorNotes0.00.00.00.00.0

trv:SeniorNotes4.05DueMarch72048, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312018-03-07
Value4.050.04050.04050.0405
Percentage of DebtInstrumentInterestRateStatedPercentage63.563.563.50.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes4.05DueMarch72048 us-gaap:SeniorNotes0.00.00.00.0

trv:SeniorNotes4.10DueMarch2049, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312019-03-04
Value4.10.0410.041
Percentage of DebtInstrumentInterestRateStatedPercentage64.364.30.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes4.10DueMarch2049 us-gaap:SeniorNotes0.00.00.0

trv:SeniorNotes4.30PercentDueAugust2045, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value4.30.0430.0430.043
Percentage of DebtInstrumentInterestRateStatedPercentage67.567.567.50.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes4.30PercentDueAugust2045 us-gaap:SeniorNotes0.00.00.00.0

trv:SeniorNotes4.60PercentDueAugust2043, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value4.60.0460.0460.046
Percentage of DebtInstrumentInterestRateStatedPercentage72.272.272.20.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes4.60PercentDueAugust2043 us-gaap:SeniorNotes0.00.00.00.0

trv:SeniorNotes5.35PercentDueNovember2040, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value5.350.05350.05350.0535
Percentage of DebtInstrumentInterestRateStatedPercentage83.983.983.90.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes5.35PercentDueNovember2040 us-gaap:SeniorNotes0.00.00.00.0

trv:SeniorNotes6.25PercentDueJune2037, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.250.06250.06250.0625
Percentage of DebtInstrumentInterestRateStatedPercentage98.098.098.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes6.25PercentDueJune2037 us-gaap:SeniorNotes0.00.00.00.0

trv:SeniorNotes6.375PercentDueMarch2033, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.3750.063750.063750.06375
Percentage of DebtInstrumentInterestRateStatedPercentage100.0100.0100.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes6.375PercentDueMarch2033 us-gaap:SeniorNotes0.00.00.00.0

trv:SeniorNotes6.75PercentDueJune2036, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.750.06750.06750.0675
Percentage of DebtInstrumentInterestRateStatedPercentage105.9105.9105.90.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes6.75PercentDueJune2036 us-gaap:SeniorNotes0.00.00.00.0

trv:SeniorNotes7.75PercentDueApril2026, us-gaap:SeniorNotes


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value7.750.07750.07750.0775
Percentage of DebtInstrumentInterestRateStatedPercentage121.6121.6121.60.0
Percentage of LongTermDebtAndCapitalLeaseObligations0.00.00.00.0
Percentage of LongTermDebtAndCapitalLeaseObligations trv:SeniorNotes7.75PercentDueApril2026 us-gaap:SeniorNotes0.00.00.00.0

Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value121.03113.93106.9397.4587.3674.4863.0856.6850.5847.3346.5245.48
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

trv:RestrictedStockUnitsAndDeferredStockUnits, us-gaap:SubsequentEvent


Share
Period End2021-02-022020-02-042019-02-052018-02-062017-02-092016-02-02
Value541690.0540880.0557640.0486020.0567010.0618270.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.0100.0100.0100.0100.0100.0

trv:RestrictedStockUnitsDeferredStockUnitsAndPerformanceShares, us-gaap:SubsequentEvent


Share
Period End2021-02-022020-02-042019-02-052018-02-062017-02-092016-02-02
Value908990.0911290.0929390.0805430.0960520.01094700.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod167.8168.5166.7165.7169.4177.1

us-gaap:PerformanceShares, us-gaap:SubsequentEvent


Share
Period End2021-02-022020-02-042019-02-052018-02-062017-02-092016-02-02
Value367300.0370410.0371750.0319410.0393510.0476410.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod67.868.566.765.769.477.1

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312015-03-312014-09-302014-06-302014-03-312013-03-312012-12-312012-09-302010-12-312009-12-31
Value5581371261222395435233848718781785
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312011-06-302011-03-312010-12-312009-12-31
Value149114031358165419612068128357493672
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value4937316.0131623212437103100110
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value21278.06.03.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0

trv:AfterTaxInterestExpense us-gaap:ConsolidationItems

trv:AfterTaxInterestExpense

trv:CorporateAndReconcilingItems


After
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value656566696766666670706968717061616058595760596161
Percentage of AfterTaxInterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:AmountOfIncreaseDecreaseInGrossClaimsAndClaimAdjustmentExpenseReserves us-gaap:ProductOrService

trv:AmountOfIncreaseDecreaseInGrossClaimsAndClaimAdjustmentExpenseReserves

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Amount
Period End2021-06-302021-03-312020-12-31
Value570820100
Percentage of AmountOfIncreaseDecreaseInGrossClaimsAndClaimAdjustmentExpenseReserves100.0100.0100.0

trv:AmountOfIncreaseDecreaseInReinsuranceRecoverablesOnUnpaidLosses us-gaap:ProductOrService

trv:AmountOfIncreaseDecreaseInReinsuranceRecoverablesOnUnpaidLosses

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Amount
Period End2021-06-302021-03-312020-12-31
Value-167.0-85.034
Percentage of AmountOfIncreaseDecreaseInReinsuranceRecoverablesOnUnpaidLosses100.0100.0100.0

trv:ChangeInNetUnrealizedGainLossOnInvestmentSecuritiesHavingCreditLossesRecognizedInConsolidatedStatementOfIncomeBeforeTaxPortionAttributableToParent

trv:ChangeInNetUnrealizedGainLossOnInvestmentSecuritiesHavingCreditLossesRecognizedInConsolidatedStatementOfIncomeBeforeTaxPortionAttributableToParent


Change
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.0-7.03.0-6.0-2.0-3.0-4.05.0-2.0-11.0-12.0-2.04.02.02.0-2.06.0125.0-1.0-3.0-5.0-5.0
Percentage of ChangeInNetUnrealizedGainLossOnInvestmentSecuritiesHavingCreditLossesRecognizedInConsolidatedStatementOfIncomeBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:ContractholderReceivablesCreditLossExpenseReversal

trv:ContractholderReceivablesCreditLossExpenseReversal


Contractholder
Period End2020-12-312020-09-302020-06-30
Value-1000000.002000000.0
Percentage of ContractholderReceivablesCreditLossExpenseReversal100.00.0100.0

trv:ContractholderReceivablesLossOnUncollectibleAccountsInPeriod

trv:ContractholderReceivablesLossOnUncollectibleAccountsInPeriod


Contractholder
Period End2020-12-312020-09-302020-06-30
Value1000000.01000000.00
Percentage of ContractholderReceivablesLossOnUncollectibleAccountsInPeriod100.0100.00.0

trv:DebtInstrumentRedemptionPriceCalculationInterestAssumptionBasisSpread us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trv:DebtInstrumentRedemptionPriceCalculationInterestAssumptionBasisSpread

trv:SeniorNotes3050DueJune2051, us-gaap:SeniorNotes


Debt
Period End2021-06-08
Value15.0
Percentage of DebtInstrumentRedemptionPriceCalculationInterestAssumptionBasisSpread100.0

trv:DebtSecuritiesAvailableForSaleCreditImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedInNetRealizedInvestmentGainsLosses

trv:DebtSecuritiesAvailableForSaleCreditImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedInNetRealizedInvestmentGainsLosses


Debt
Period End2020-12-312020-09-302020-06-30
Value-1.00.02.0
Percentage of DebtSecuritiesAvailableForSaleCreditImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedInNetRealizedInvestmentGainsLosses100.00.0100.0

trv:DebtSecuritiesAvailableForSaleCreditImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedInNetRealizedInvestmentGainsLosses us-gaap:InvestmentType

us-gaap:OtherDebtSecurities


Debt
Period End2021-06-302020-06-30
Value0.02.0
Percentage of DebtSecuritiesAvailableForSaleCreditImpairmentChargesIntentToSellNoAllowancePreviouslyRecordedRecognizedInNetRealizedInvestmentGainsLosses0.0100.0

trv:FeeIncome

trv:FeeIncome


Fee
Period End2021-06-302021-03-312020-06-302020-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value104101114108826979747468647679
Percentage of FeeIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:FeeIncome us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Fee
Period End2021-06-302021-03-312020-06-302020-03-31
Value104101114108
Percentage of FeeIncome100.0100.0100.0100.0

trv:FeeIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Fee
Period End2021-06-302021-03-312020-06-302020-03-31
Value9795108102
Percentage of FeeIncome93.394.194.794.4

us-gaap:OperatingSegments, trv:PersonalInsurance


Fee
Period End2021-06-302021-03-312020-06-302020-03-31
Value7.06.06.06.0
Percentage of FeeIncome6.75.95.35.6

trv:NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations us-gaap:ProductOrService

trv:NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1823171801422.02760-294.01235116714186150
Percentage of NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment, trv:BondAndSpecialtyInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4415320.0-33.00.0203.0393.089538935
Percentage of NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations24.24.717.80.0-1650.00.033.3-1.031.75.953.3378.647.823.3

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment, trv:BusinessAndInternationalInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value73134124-220.00.05.08.0-316.071-21.048-56.08466
Percentage of NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations40.142.368.9-154.90.018.513.3107.557.7-41.228.7-400.045.244.0

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment, trv:PersonalInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value651682436235223219136930171349
Percentage of NetFavorablePriorYearReserveDevelopmentImpactingResultsOfOperations35.753.013.3254.91750.081.553.3-6.510.6135.318.0121.47.032.7

trv:NetRealizedInvestmentGainsLossesAfterTax

trv:NetRealizedInvestmentGainsLossesAfterTax


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4734482910.0-76.06.0182041502230-9.04740523.0241515-7.0-20.010.06.06.0152610.07.0-19.01099.026-3.04.05.09.01.0131330147-20.016
Percentage of NetRealizedInvestmentGainsLossesAfterTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:OperatingIncomeLossNetOfTax

trv:OperatingIncomeLossNetOfTax


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value8796991262798-50.0676867378537755571687494678633253543614919701649698886918806827
Percentage of OperatingIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:OperatingIncomeLossNetOfTax us-gaap:ConsolidationItems

trv:CorporateAndReconcilingItems


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-72.0-69.0-72.0-74.0-74.0-71.0-75.0-71.0-76.0-75.0-72.0-72.0-78.0-76.0-66.0-65.0-61.0-62.0-61.0-60.0-62.0-61.0-64.0-65.0
Percentage of OperatingIncomeLossNetOfTax-8.2-9.9-5.7-9.3148.0-10.5-8.7-18.8-14.2-9.9-12.6-10.5-15.8-11.2-10.4-25.7-11.2-10.1-6.6-8.6-9.6-8.7-7.2-7.1

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value951768133487224747942449613830643759572754699318604676980761711759950983868891
Percentage of OperatingIncomeLossNetOfTax108.2109.9105.7109.3-48.0110.5108.7118.8114.2109.9112.6110.5115.8111.2110.4125.7111.2110.1106.6108.6109.6108.7107.2107.1107.7107.7

trv:OperatingIncomeLossNetOfTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BondAndSpecialtyInsurance


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value18713716411572122167139174138220196204173112136163129161146202144162196151124
Percentage of OperatingIncomeLossNetOfTax21.319.613.014.4-144.018.019.336.832.418.338.528.541.325.517.753.830.021.017.520.831.120.618.321.418.715.0

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value643317713365-58.0289448179351414391410385452637105429468722457393476566546543515
Percentage of OperatingIncomeLossNetOfTax73.245.456.545.7116.042.851.747.465.454.868.559.777.966.7100.641.579.076.278.665.260.668.263.959.567.462.3

us-gaap:OperatingSegments, trv:PersonalInsurance


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value12131445739210.03363271318827832153-17.0129-50.077127997158116139222241174252
Percentage of OperatingIncomeLossNetOfTax13.844.936.249.1-20.049.737.734.716.436.85.622.3-3.419.0-7.930.42.212.910.622.517.919.925.126.321.630.5

trv:OperatingLeaseAndShortTermLeaseCost

trv:OperatingLeaseAndShortTermLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value23232424252425252626
Percentage of OperatingLeaseAndShortTermLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:OtherInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses

trv:OtherInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses


Other
Period End2020-12-312020-09-302020-06-30
Value0.00.040
Percentage of OtherInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses0.00.0100.0

trv:PaymentsToAcquireEquitySecurities

trv:PaymentsToAcquireEquitySecurities


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value19322124353221192231264020
Percentage of PaymentsToAcquireEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:ProceedsFromSaleOfEquitySecurities

trv:ProceedsFromSaleOfEquitySecurities


Proceeds
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value25352221334128323951356626
Percentage of ProceedsFromSaleOfEquitySecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:RevenuesExcludingRealizedGainLoss us-gaap:ConsolidationItems

trv:RevenuesExcludingRealizedGainLoss

us-gaap:OperatingSegments


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value8626826983478238738880068051799078097617773676927441729773817262710169367156693567636692670367766696661667616846676867086728647765066320644665146355
Percentage of RevenuesExcludingRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:RevenuesExcludingRealizedGainLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:BondAndSpecialtyInsurance


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value847807808788740727741719696668688679663646648653637571594586575563580599586565586596592573575574
Percentage of RevenuesExcludingRealizedGainLoss9.89.89.79.610.09.19.29.08.98.88.98.88.98.98.89.09.08.28.38.48.58.48.78.88.88.58.78.78.78.58.58.9

us-gaap:OperatingSegments, trv:BusinessAndInternationalInsurance


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value46494470450744924059445044954492440543164366436142084144421341404078420944084258417441614167424142124193427643374292424742083944
Percentage of RevenuesExcludingRealizedGainLoss53.954.154.054.554.955.655.856.256.456.756.456.756.656.857.157.057.460.761.661.461.762.262.262.662.963.463.263.463.463.362.560.9

us-gaap:OperatingSegments, trv:PersonalInsurance


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value3130299230322958258928292815277927082633268226522570250725202469238621562154209120141968195619361898185818991913188418881945195919431949200620302022
Percentage of RevenuesExcludingRealizedGainLoss36.336.236.335.935.035.335.034.834.734.634.734.534.534.434.134.033.631.130.130.229.829.429.228.628.328.128.127.927.828.128.930.229.930.831.131.231.8

trv:SecuritiesTransactionsInCourseOfSettlement

trv:SecuritiesTransactionsInCourseOfSettlement


Securities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-40.0269-569.04289.085-274.0209-72.0295-229.0-106.077202-169.0-48.013157-532.050170291-216.0-80.0-122.0305-37.0-85.0-36.0240-259.0220-120.0180-76.0-24.0-171.0248-17.079134210-242.0-93.095
Percentage of SecuritiesTransactionsInCourseOfSettlement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:SubrogationRecoveryBenefit

trv:SubrogationRecoveryBenefit


Subrogation
Period End2020-09-30
Value403
Percentage of SubrogationRecoveryBenefit100.0

trv:SubrogationRecoveryBenefit us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment, trv:BusinessAndInternationalInsurance


Subrogation
Period End2021-03-312020-12-312020-09-30
Value10.00.081
Percentage of SubrogationRecoveryBenefit0.00.020.1

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment, trv:PersonalInsurance


Subrogation
Period End2021-03-312020-12-312020-09-30
Value620.0322
Percentage of SubrogationRecoveryBenefit0.00.079.9

trv:SubrogationRecoveryBenefit us-gaap:StatementScenario, us-gaap:SubsequentEventType

srt:ScenarioForecast, us-gaap:SubsequentEvent


Subrogation
Period End2020-09-30
Value400
Percentage of SubrogationRecoveryBenefit99.3

trv:SubrogationRecoveryPaymentsReceived

trv:SubrogationRecoveryPaymentsReceived


Subrogation
Period End2020-09-30
Value366
Percentage of SubrogationRecoveryPaymentsReceived100.0

trv:TotalInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses

trv:TotalInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses


Total
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.00.0-4.046160.01.0
Percentage of TotalInvestmentsTotalCreditImpairmentChargesRecognizedInNetRealizedInvestmentGainsLosses0.00.0100.0100.0100.00.0100.0

trv:TotalInvestmentsTotalNetCreditImpairmentRecoveriesRecognizedInNetRealizedInvestmentGainsLosses

trv:TotalInvestmentsTotalNetCreditImpairmentRecoveriesRecognizedInNetRealizedInvestmentGainsLosses


Total
Period End2020-09-30
Value4000000.0
Percentage of TotalInvestmentsTotalNetCreditImpairmentRecoveriesRecognizedInNetRealizedInvestmentGainsLosses100.0

us-gaap:AccretionExpense us-gaap:ProductOrService

us-gaap:AccretionExpense

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Accretion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1212131212121212131212121213
Percentage of AccretionExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.144411.00.1590.033461.00.10.5460.00.40.2511.00.10.2611.0120.6591.00.01.0721.01.01.055
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.0411.00.00.0461.00.01.0460.00.00.0511.00.00.0611.0120.0591.00.01.072
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation694.4100.0100.00.00.0100.0100.00.0200.0100.00.00.00.0100.0100.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:CommonStockDividendsPerShareDeclared


Common
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.880.850.850.850.820.820.820.770.770.770.720.720.720.720.670.670.670.670.610.610.610.610.550.550.550.55
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConcentrationRiskPercentage1 us-gaap:CededCreditRisk, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ConcentrationRiskPercentage1

trv:CaptiveInsuranceCompanies, trv:ReinsuranceRecoverablesAfterDeductionOfMandatoryPoolsAndAssociationsBeforeAllowance, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value6.00.06
Percentage of ConcentrationRiskPercentage1100.0100.0

trv:NotRatedByAMBest, trv:ReinsuranceRecoverablesAfterDeductionOfMandatoryPoolsAndAssociationsBeforeAllowance, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value13.00.13
Percentage of ConcentrationRiskPercentage1216.7216.7

trv:OtherCompaniesNotRatedByAMBest, trv:ReinsuranceRecoverablesAfterDeductionOfMandatoryPoolsAndAssociationsBeforeAllowance, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value6.00.06
Percentage of ConcentrationRiskPercentage1100.0100.0

trv:VoluntaryPools, trv:ReinsuranceRecoverablesAfterDeductionOfMandatoryPoolsAndAssociationsBeforeAllowance, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value1.00.01
Percentage of ConcentrationRiskPercentage116.716.7

us-gaap:ConcentrationRiskPercentage1 us-gaap:CreditRatingAMBest, us-gaap:CededCreditRisk, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

trv:AMBestAMinusRatingOrBetter, trv:RatedByAMBest, trv:ReinsuranceRecoverablesAfterDeductionOfMandatoryPoolsAndAssociationsBeforeAllowanceRatedByAMBest, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value94.00.93
Percentage of ConcentrationRiskPercentage11566.71550.0

trv:CreditRatingAMBestProvidedRating, trv:RatedByAMBest, trv:ReinsuranceRecoverablesAfterDeductionOfMandatoryPoolsAndAssociationsBeforeAllowance, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value87.00.87
Percentage of ConcentrationRiskPercentage11450.01450.0

us-gaap:DebtInstrumentRedemptionPricePercentage us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:DebtInstrumentRedemptionPricePercentage

trv:SeniorNotes3050DueJune2051, us-gaap:SeniorNotes


Debt
Period End2021-06-08
Value100.0
Percentage of DebtInstrumentRedemptionPricePercentage100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value1000000.01000000.04000000.04000000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded us-gaap:InvestmentType

us-gaap:OtherDebtSecurities


Debt
Period End2021-06-302020-12-312020-09-302020-06-302020-03-31
Value1000000.01000000.01000000.04000000.04000000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded0.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value-3000000.0-3000000.000
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal100.0100.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal us-gaap:InvestmentType

us-gaap:OtherDebtSecurities


Debt
Period End2021-06-302020-12-312020-09-302020-06-302020-03-31
Value-1000000.0-3000000.0-3000000.000
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal0.0100.0100.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value02000000.000
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold0.0100.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold us-gaap:InvestmentType

us-gaap:OtherDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value02000000.000
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold0.0100.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value281518211615161614214.023186.01411
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value4.01.00.02.00.01.02.02.00.04.02.05.05.06.0322.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredFederalIncomeTaxExpenseBenefit

us-gaap:DeferredFederalIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.056384.0-77.06.0-23.0-20.0-22.0323027-14.0-56.0249-18.0-45.015181-46.0-30.010512-37.09.013328-38.0-22.015335-19.0201312.0966.0119-96.022-16.01532998-25.076
Percentage of DeferredFederalIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.01.02.01.01.00.00.00.00.00.00.00.00.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses0.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-27.0-27.0-24.0-23.0-23.0-23.0-14.0-14.0-14.0-14.0-23.0-22.0-23.0-23.0-19.0-29.0-19.0-18.0-16.0-17.0-16.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses0.0-2700.0-1200.0-2300.0-2300.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1000000.0-1000000.00-1000000.00-2000000.00-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.0-1000000.00-1000000.0-1000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value0-1000000.00000-1000000.0000-1000000.00-1000000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit0.0100.00.0-0.00.0-0.0100.0-0.0-0.0-0.0100.0-0.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value686969696869696968696666666660606060585758
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.01.01.01.01.01.01.02.02.02.02.01.02.02.02.02.01.02.02.02.02.0
Percentage of DefinedBenefitPlanInterestCost0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value202128292829363535353132323131353031313031
Percentage of DefinedBenefitPlanInterestCost0.02100.02800.02900.02800.02900.03600.01750.01750.01750.01550.03200.01600.01550.01550.01750.03000.01550.01550.01500.01550.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-1.0-1.0-1.0-1.00.0-1.00.01.01.01.01.00.01.01.01.01.00.01.02.01.01.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value15141616161610.010.09.010.02221212122331919181920
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-1500.0-1400.0-1600.0-1600.00.0-1600.00.01000.0900.01000.02200.00.02100.02100.02200.03300.00.01900.0900.01900.02000.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:IncomeStatementLocation, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

trv:PolicyholderBenefitsAndClaimsIncurredNet, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value151413141414111312121413141311131212121212
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value212119201919171717181920192018171818181718
Percentage of DefinedBenefitPlanServiceCost140.0150.0146.2142.9135.7135.7154.5130.8141.7150.0135.7153.8135.7153.8163.6130.8150.0150.0150.0141.7150.0

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value363533343333293029303433333329303030302930
Percentage of DefinedBenefitPlanServiceCost240.0250.0253.8242.9235.7235.7263.6230.8241.7250.0242.9253.8235.7253.8263.6230.8250.0250.0250.0241.7250.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.03.05.0-12.09.0-6.00.02.0-6.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents0.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.09.05.06.06.08.06.06.06.08.06.06.06.08.01110.010.01410.014111710.01110.0161110.011151110.010.01410.09.010.01310.09.010.013190.010.015
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGain

us-gaap:EquitySecuritiesFvNiUnrealizedGain


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2597261621159.05.07.031-19.06.0
Percentage of EquitySecuritiesFvNiUnrealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGain us-gaap:InvestmentType

us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value24872614219.09.05.07.024-17.07.0
Percentage of EquitySecuritiesFvNiUnrealizedGain96.089.7100.087.5100.060.0100.0100.0100.077.489.5116.7

us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1.010.00.02.00.06.00.00.00.07.0-2.0-1.0
Percentage of EquitySecuritiesFvNiUnrealizedGain4.010.30.012.50.040.00.00.00.022.610.5-16.7

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2823391946-79.0124.06.039-34.02.016-13.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedLoss

us-gaap:EquitySecuritiesFvNiUnrealizedLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-4.07.0-11.0-1.0-21.045-3.01.0-1.06.0133.0
Percentage of EquitySecuritiesFvNiUnrealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedLoss us-gaap:InvestmentType

us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-4.07.0-10.0-1.0-20.043-3.01.0-1.06.0163.0
Percentage of EquitySecuritiesFvNiUnrealizedLoss100.0100.090.9100.095.295.6100.0100.0100.0100.0123.1100.0

us-gaap:NonredeemablePreferredStock


Equity
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-30
Value0.0-1.02.00.00.0-3.00.0
Percentage of EquitySecuritiesFvNiUnrealizedLoss-0.04.84.4-0.00.0-23.10.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value313200162154-253.0675564983481115749597901011091187027174.080914374155118139110721017471431141142.048109122122457145
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability

us-gaap:IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability


Income
Period End2021-06-30
Value-8000000.0
Percentage of IncomeTaxExpenseBenefitContinuingOperationsAdjustmentOfDeferredTaxAssetLiability100.0

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value134312581160124112381215112812111223118510631141116011241020108010921065
Percentage of IncreaseDecreaseInDeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value536777-51.012181067388120598331-2.0366445255180-101.01063164334-118.0248-613.0226-201.0-48.0-265.0-561.0-406.0-238.0
Percentage of IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInPremiumsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value385333-418.0-247.0245326-227.0-168.0345434-115.0-152.0263397-123.0-92.0323286-54.0-227.0174393-115.0-186.0228258-127.0-129.0274189-296.0-161.0248155-169.0-161.0317151-202.0-103.0375167-199.0-154.028597
Percentage of IncreaseDecreaseInPremiumsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInReinsuranceRecoverable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-142.0-12.012210-75.01555-61.0-53.0-98.07950-24.0-5.0-35.0176-63.0-94.0-362.068-190.0-126.0-25.016-194.0-69.03.0-197.0-100.0-106.0-182.0-355.0-357.0-390.0473-174.0-258.0-494.0-563.0-19.0-7.0-218.0-546.0-226.0-442.0-86.0
Percentage of IncreaseDecreaseInReinsuranceRecoverable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInUnearnedPremiums

us-gaap:IncreaseDecreaseInUnearnedPremiums


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value459509-368.0317229414-342.0392407551-385.0216361518-331.0163214475-353.0194203328-294.0180177185-306.014414194-456.0138158187-383.0160229117-424.0217220175-355.014818486
Percentage of IncreaseDecreaseInUnearnedPremiums100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2400000.02000000.0100000.01000000.001500000.002600000.02400000.01900000.0-100000.02300000.02400000.02900000.0100000.02500000.02500000.02700000.0-700000.03800000.03500000.03700000.0-100000.03400000.03200000.03700000.0100000.03800000.03700000.03700000.004000000.04000000.04200000.0100000.03900000.03600000.03800000.0-300000.03500000.0-200000.04600000.0-200000.04400000.04500000.04800000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value23232424252425252626
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsNetPeriodIncreaseDecrease us-gaap:ProductOrService, us-gaap:NoncatastrophicEvent, us-gaap:StatementBusinessSegments

us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsNetPeriodIncreaseDecrease

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment, us-gaap:AsbestosIssue, trv:BusinessAndInternationalInsurance


Liability
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value0.02950.02200.0225
Percentage of LiabilityForAsbestosAndEnvironmentalClaimsNetPeriodIncreaseDecrease0.0100.00.0100.00.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1 us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value205410592537229617179472560236418409702585226118421009253621001812887188618801665789
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1 us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2262301218461572223534392026213725773320194419652414304018771865215428121798177424412563
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-25.0-28.0-136.0-75.0-73.0210-94.050-21.0-41.026920-92.0-10.02.0988334-86.0-24.0-66.0102
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1 us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value5023494843174859508247604611519647924419475646364541427543244785420340763717383737473694
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent us-gaap:IncomeStatementLocation, us-gaap:RetirementPlanType

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent

trv:PolicyholderBenefitsAndClaimsIncurredNet, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Net
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value-1000000.00-1000000.000001000000.00001000000.001000000.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.00.0100.00.00.00.00.0100.00.00.00.0100.00.0100.0

trv:PolicyholderBenefitsAndClaimsIncurredNet, us-gaap:PensionPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-8000000.0-9000000.0-7000000.0-8000000.0-7000000.0-7000000.0-8000000.0-9000000.0-8000000.0-8000000.0-5000000.0-4000000.0-5000000.0-5000000.0-3000000.01000000.0-5000000.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent800.00.00.0800.00.00.00.00.0-800.00.00.00.0-500.00.00.0100.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0-1000000.0-1000000.000-1000000.001000000.001000000.01000000.0001000000.01000000.00
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent-0.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SellingGeneralAndAdministrativeExpenses, us-gaap:PensionPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-13000000.0-12000000.0-10000000.0-10000000.0-10000000.0-10000000.0-11000000.0-11000000.0-12000000.0-12000000.0-7000000.0-8000000.0-7000000.0-7000000.0-4000000.02000000.0-6000000.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent1300.00.00.01000.00.00.00.00.0-1200.00.00.00.0-700.00.00.0200.00.0

us-gaap:NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent us-gaap:RetirementPlanType

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-1000000.0-1000000.0-1000000.0-1000000.00-1000000.001000000.01000000.01000000.01000000.001000000.01000000.01000000.01000000.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent100.00.00.0100.00.00.00.00.0100.00.00.00.0100.00.00.0100.0

us-gaap:PensionPlansDefinedBenefit


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-21000000.0-21000000.0-17000000.0-18000000.0-17000000.0-17000000.0-19000000.0-20000000.0-20000000.0-20000000.0-12000000.0-12000000.0-12000000.0-12000000.0-7000000.03000000.0-11000000.0
Percentage of NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent2100.00.00.01800.00.00.00.00.0-2000.00.00.00.0-1200.00.00.0300.00.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Oci
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302017-12-312016-12-312016-09-30
Value-54.00.00.01.0-16.02.00.0-1.0-33.00.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.00.00.0100.0100.0100.00.0100.0100.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Oci
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1891867-459.0-96.04898841129337-312.0-226.0-950.0-10.012265100-1310.0-284.0590474
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.00.0-45900.0600.024450.00.00.00.00.00.00.01000.00.00.00.03969.70.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value477-1220.03652581922-708.06.04218871180128-317.0-374.0-950.0-14.083314135-1419.0-303.0557560
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.00.0-675.90.00.0-70800.0-37.521050.00.00.00.00.00.00.01400.00.00.00.04300.00.00.00.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Oci
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-31
Value-5.02.0-4.0-3.0-2.0-3.04.0-2.0-8.0-10.0-1.03.00.0-3.04.07.0-4.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.00.0-400.018.8-100.00.00.00.00.00.00.0-300.00.09.10.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value36261407453-246.0121-68.06.047-93.03.0-138.01.0-6.0944835-73.0-23.0-43.090
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.00.0-259.30.00.0-24600.0-756.2-3400.00.00.00.00.00.00.0600.00.00.00.0221.20.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Oci
Period End2021-06-302021-03-31
Value441-1246.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.00.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value22232423242424232322
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value27262727282727272624
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value533-1596.03302172359-575.0-135.060511081416426-414.0-298.0-1203.0-135.0-42.0327144-2021.0-455.0879714-191.067-1065.0169
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-26.0-25.046-20.0-21.0-23.07.0-14.0-14.0-12.0121-22.0-21.0-22.0-4.09.0-17.0-17.034-16.0-18.0-16.05.0-24.0-23.0-24.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value40261497952-268.0137-75.05.050-95.00.0-158.06.0-11.01134841-78.0-31.0-35.0103-54.0-227.094-274.0
Percentage of OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value599-1545.04343092435-826.0-7.054111231483208-403.0-447.0-1177.0-138.064394202-2135.0-464.0874838-251.0-139.0-953.0-86.0
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2625-46.0202123-7.0141412-121.02221224.0-9.01717-34.0161816-5.0242324
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent4.3-1.6-10.66.50.9-2.8100.02.61.20.8-58.2-5.5-4.7-1.9-2.9-14.14.38.41.6-3.42.11.92.0-17.3-2.4-27.9

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2172359-575.0-135.060511081416426-414.0-298.0-1203.0-135.0-42.0327144-2021.0-455.0879714-191.067-1065.0169
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent70.296.969.61928.6111.898.795.5204.8102.766.7102.297.8-65.683.071.394.798.1100.685.276.1-48.2111.8-196.5

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value599-1545.04343092435-826.0-7.054111231483208-403.0-447.0-1177.0-138.064394202-2135.0-464.0874838-251.0-139.0-953.0-86.0
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-7.03.0-6.0-2.0-3.0-4.05.0-2.0-11.0-12.0-2.04.02.02.0-2.06.0125.0-1.0-3.0-5.0-5.0
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent-2.30.10.728.6-0.6-0.40.3-1.02.72.70.2-2.93.10.50.1-1.31.40.60.42.20.55.8

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value40261497952-268.0137-75.05.050-95.00.0-158.06.0-11.01134841-78.0-31.0-35.0103-54.0-227.094-274.0
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent6.7-1.734.325.62.132.4-1957.1-13.90.43.4-45.7-0.035.3-0.58.0176.612.220.33.76.7-4.012.321.5163.3-9.9318.6

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value533-1596.02359-575.0
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent89.0103.396.969.6

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value478-1211.03642561931-689.0154198881177144-315.0-366.0-933.0-58.059271140-1415.0-305.0551571-189.0-137.0-600.0-111.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2020-37.0161718-5.0111110.0-97.01717170.0-6.01112-23.010.01211-4.0151516
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent4.2-1.7-10.26.20.9-2.6-33.32.61.20.8-67.4-5.4-4.6-1.8-0.0-10.24.18.61.6-3.32.21.92.1-10.9-2.5-14.4

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1711859-457.0-105.04788741116336-327.0-235.0-950.0-55.0-30.021193-1317.0-296.0574467-125.041-697.0113
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent66.896.366.3-700.0114.198.494.8233.3103.864.2101.894.8-50.877.966.493.197.0104.281.866.1-29.9116.2-101.8

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value478-1211.03642561931-689.0154198881177144-315.0-366.0-933.0-58.059271140-1415.0-305.0551571-189.0-137.0-600.0-111.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-5.02.0-4.0-3.0-2.0-3.04.0-2.0-8.0-10.0-1.03.01.01.0-2.04.08.03.00.0-3.0-3.0-3.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-2.00.10.6-20.0-0.5-0.30.3-1.42.52.70.1-5.21.70.40.1-1.31.50.5-0.02.20.52.7

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value36261397453-246.0128-68.06.047-93.03.0-138.01.0-6.0944835-73.0-23.0-43.090-60.0-190.085-237.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent7.5-2.138.228.92.735.7853.3-16.20.74.0-64.6-1.037.7-0.110.3159.317.725.05.27.5-7.815.831.7138.7-14.2213.5

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value422-1257.01859-457.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent88.3103.896.366.3

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value121-334.07053504-137.0-22.012223530664-88.0-81.0-244.0-80.05.012362-720.0-159.0323267-62.0-2.0-353.025
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6.05.0-9.04.04.05.0-2.03.03.02.0-24.05.04.05.04.0-3.06.05.0-11.06.06.05.0-1.09.08.08.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent15.0-1.5-12.97.50.8-3.69.12.51.30.7-37.5-5.7-4.9-2.0-5.0-60.04.98.11.5-3.81.91.91.6-450.0-2.332.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value46500-118.0-30.012723430090-87.0-63.0-253.0-80.0-12.011651-704.0-159.0305247-66.026-368.056
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent186.899.286.1136.4104.199.698.0140.698.977.8103.7100.0-240.094.382.397.8100.094.492.5106.5-1300.0104.2224.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value121-334.07053504-137.0-22.012223530664-88.0-81.0-244.0-80.05.012362-720.0-159.0323267-62.0-2.0-353.025
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-2.01.0-2.01.0-1.0-1.01.00.0-3.0-2.0-1.01.01.01.00.02.04.02.0-1.00.0-2.0-2.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1-3.80.21.5-4.5-0.8-0.40.30.03.42.50.4-1.220.00.8-0.0-1.31.20.71.6-0.00.6-8.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4.010.05.0-1.0-22.09.0-7.0-1.03.0-2.0-3.0-20.05.0-5.0190.06.0-5.0-8.08.0136.0-37.09.0-37.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent13.314.39.4-0.216.1-40.9-5.7-0.41.0-3.13.424.7-2.06.2380.00.09.70.75.02.54.9-9.71850.0-2.5-148.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value111-339.0500-118.0
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent191.7101.599.286.1

us-gaap:OtherOperatingActivitiesCashFlowStatement

us-gaap:OtherOperatingActivitiesCashFlowStatement


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value410-504.0511-38.0292-636.0444355194-458.0168205247-430.0-75.0192185-645.073403108-395.0-39.0530-85.0-350.0-118.0731-195.0-355.078534-53.0-297.022497-166.0-147.0112259-374.0-384.0108236
Percentage of OtherOperatingActivitiesCashFlowStatement100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForLossesAndLossAdjustmentExpense us-gaap:ProductOrService

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value4316407143833868395243864586450144174290452942264256404944133965396636993684365441063352
Percentage of PaymentsForLossesAndLossAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromAvailableforsaleSecuritiesShortterm

us-gaap:PaymentsForProceedsFromAvailableforsaleSecuritiesShortterm


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value718-524.0-821.02402053-906.03401114-606.0109-452.0746-792.0-410.0-964.0566473-49.064816-596.0-85.0-456.01215-567.0134-665.01223-220.0160
Percentage of PaymentsForProceedsFromAvailableforsaleSecuritiesShortterm100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value536010878756982748782868099535758666310486757982448890961109260119975710094964192123105746998757075
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.0411.00.00.0461.00.01.0460.00.00.0511.00.00.0611.0120.0591.01.01.071
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.00.00.0100.0100.00.0100.0100.00.00.00.0100.0100.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4708475441225161216026302477252627942914266429104032392038472730261730562605329930052700211837332914332530882788273427152975200421492339277024772596260424802677172318241618122717652175
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2021-06-302021-03-312019-12-312018-12-312017-12-312014-12-312014-09-302014-06-302014-03-31
Value0.0380.00.00.00.00.00.012
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired0.0100.00.00.00.00.00.00.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value12497166931251031281071161461451171331421491331351241581321281621451141071681481801131131341031149524271107114131129522107141146123104
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireRealEstateHeldForInvestment

us-gaap:PaymentsToAcquireRealEstateHeldForInvestment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value9.05.0809.08.0161210.08.07717131133191410.0161810.0137.07.047636.07.05.0279.0426.0536.0334.0535.0256.05.0306.07.05.03.0
Percentage of PaymentsToAcquireRealEstateHeldForInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumReceivableCreditLossExpenseReversal

us-gaap:PremiumReceivableCreditLossExpenseReversal


Premium
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1416191724
Percentage of PremiumReceivableCreditLossExpenseReversal100.0100.0100.0100.0100.0

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value191110.0158.0
Percentage of PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance100.0100.0100.0100.0100.0

us-gaap:ProceedsFromDebtNetOfIssuanceCosts

us-gaap:ProceedsFromDebtNetOfIssuanceCosts


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302015-12-312013-12-31
Value0.00.04900.00.00.00.04920.01000.04911000.00.00.00.00.0
Percentage of ProceedsFromDebtNetOfIssuanceCosts0.00.0100.00.00.00.00.0100.00.0100.00.0100.0100.00.00.00.00.00.0

us-gaap:ProceedsFromDebtNetOfIssuanceCosts us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trv:SeniorNotes3050DueJune2051, us-gaap:SeniorNotes


Proceeds
Period End2021-06-08
Value739
Percentage of ProceedsFromDebtNetOfIssuanceCosts0.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value228320642146217016101461195018571482155614311998170719502169228120822218232728752025174823113491248428302919306026032312198720161778212325141688
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1167997457564113106135105241817511425420020819527022615718620815120814624327417116721716420717431913018320311219712416129123775114
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1244123810637748323883863067267693605831522108599429737518855212631842139532932090612214237940647558833823436318231922331910624649043250011351646
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromStockOptionsExercised

us-gaap:ProceedsFromStockOptionsExercised


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value72134557.034317.032111631519138525303583168356564412527904132655748194198487793774425771681416876123
Percentage of ProceedsFromStockOptionsExercised100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-20.0-20.0-17.0-16.0-17.0-17.0-11.0-9.0-11.0-10.0-17.0-17.0-17.0-17.0-1.0-17.0-11.0-12.0-10.0-10.0-9.0-11.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Reclassification
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value188.0-2.09.01110.0131.0154542547.07.012167.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-112.5-47.111.8-81.8-122.2-90.9-130.0-5.9-88.2-4500.0-247.1-490.9-58.3-70.0-120.0-177.8-63.6

us-gaap:AccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-1.0-9.01.02.0-9.0-19.0-9.02.0-1.03.0-16.0-2.0-8.0-17.0442443-5.0-4.02.06.0-11.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent5.045.0-5.9-12.552.9111.881.8-22.29.1-30.094.111.847.1100.0-4400.0-141.2-390.941.740.0-20.0-66.7100.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Reclassification
Period End2021-06-302021-03-31
Value1911
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-95.0-55.0

us-gaap:ReinsuranceRecoverableCreditLossExpenseReversal

us-gaap:ReinsuranceRecoverableCreditLossExpenseReversal


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value-7.0-4.06.0-16.07.0
Percentage of ReinsuranceRecoverableCreditLossExpenseReversal100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:RepaymentsOfDebt

trv:SeniorNotes3.90PercentDueNovember2020, us-gaap:SeniorNotes


Repayments
Period End2020-11-01
Value500
Percentage of RepaymentsOfDebt100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value7.012418.04.01410.014288.0
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

trv:RestrictedStockUnitsDeferredStockUnitsAndPerformanceShares, us-gaap:SubsequentEvent


Share
Period End2021-02-022020-02-042019-02-052018-02-062017-02-092016-02-02
Value139.83132.58126.18140.85118.78106.03
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod us-gaap:AwardType, us-gaap:BusinessAcquisition

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

us-gaap:RestrictedStock, trv:SimplyBusiness


Share
Period End2020-08-31
Value41997.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross us-gaap:AwardType, us-gaap:PlanName, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross

us-gaap:EmployeeStockOption, trv:TheTravelersCompaniesInc2014StockIncentivePlan, us-gaap:SubsequentEvent


Share
Period End2021-02-022020-02-042019-02-052018-02-062017-02-092016-02-02
Value1594600.02474000.02051700.01632400.02106000.02808600.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue us-gaap:AwardType, us-gaap:PlanName, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

us-gaap:EmployeeStockOption, trv:TheTravelersCompaniesInc2014StockIncentivePlan, us-gaap:SubsequentEvent


Share
Period End2021-02-022020-02-042019-02-052018-02-062017-02-092016-02-02
Value23.314.4116.6520.1316.1513.26
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice us-gaap:AwardType, us-gaap:PlanName, us-gaap:SubsequentEventType

us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice

us-gaap:EmployeeStockOption, trv:TheTravelersCompaniesInc2014StockIncentivePlan, us-gaap:SubsequentEvent


Share
Period End2021-02-022020-02-042019-02-052018-02-062017-02-092016-02-02
Value139.83132.58126.18140.85118.78106.03
Percentage of ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation


Shares
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302018-09-302018-06-302017-09-302017-06-302016-09-302016-06-30
Value0300000.00368.0628.03460.03205.01374.0964.01803.0100000.05146.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation0.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1000000.001000000.01000000.001000000.02000000.03000000.04000000.0
Percentage of ShortTermLeaseCost100.00.0100.0100.00.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value600000.01500000.0500000.0100000.0400000.0800000.0200000.0300000.01000000.01200000.0200000.0100000.0200000.01300000.0300000.0400000.0300000.01700000.02100000.0500000.0800000.01600000.0500000.0300000.0400000.02100000.0
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:CommonStockIncludingAdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value61108598.029277.0289154151612651824266816428484728182166
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityOther us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityOther

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-3000000.03000000.00-1000000.0-2000000.0-1000000.01000000.0-1000000.001000000.011000000.0-1000000.00-1000000.0
Percentage of StockholdersEquityOther100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense us-gaap:ProductOrService

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value5188524244764983506347634661486448944435490746234693439145854768436741263967384940163843
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:ProductOrService

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-165.0-294.0-159.0-124.019-3.0-50.0332-102.0-16.0-151.013-152.0-116.0-261.017-164.0-50.0-250.0-12.0-269.0-149.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockAcquiredAverageCostPerShare


Treasury
Period End2021-06-302021-03-312020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value157.18147.874.08134.33147.23145.87129.42125.09130.22129.66141.84133.7128.11123.04120.86113.54117.25112.12108.46113.47102.81101.62106.97
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired

us-gaap:TreasuryStockSharesAcquired


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2.62.41.40.00.03.52.82.52.62.91.43.02.72.52.62.63.81.96.64.74.95.18.87.37.95.6
Percentage of TreasuryStockSharesAcquired100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockSharesAcquired us-gaap:StatementEquityComponents

us-gaap:CommonStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2.62.41.40.00.03.52.82.52.62.91.43.02.72.52.62.63.81.96.64.74.95.18.87.37.95.6
Percentage of TreasuryStockSharesAcquired100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4003562000.00.04253753753753751704003503503503284752257505505505501000750800600
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4003562000.00.04253753753753751704003503503503284752257505505505501000750800600
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic

us-gaap:UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic


Undistributed
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value7.05.010.06.01.05.07.03.04.05.05.05.04.05.04.02.05.04.06.06.05.05.07.06.06.06.08.07.05.07.07.06.07.0
Percentage of UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

dei:EntityCommonStockSharesOutstanding

dei:EntityCommonStockSharesOutstanding


Entity
Period End2021-02-05
Value252
Percentage of EntityCommonStockSharesOutstanding100.0

trv:ContractholderPayables

trv:ContractholderPayables


Contractholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value40354290426143684336465446194802477648114785488748304835477547574700466846094580454144194374439044734396436243674371436143284450444848244806488649035263518653755370527153435797
Percentage of ContractholderPayables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:ContractholderReceivables

trv:ContractholderReceivables


Contractholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value4016427142424347431446344619480247764811478548874830483547754757470046684609458045414419437443904473439643624367437143614328445044484824480648864903526351865343
Percentage of ContractholderReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:ContractholderReceivablesAllowanceForCreditLoss

trv:ContractholderReceivablesAllowanceForCreditLoss


Contractholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value19191921222020
Percentage of ContractholderReceivablesAllowanceForCreditLoss100.0100.0100.0100.0100.0100.0100.0

trv:DebtInstrumentCarryingAmountExcludingCurrentMaturities

trv:DebtInstrumentCarryingAmountExcludingCurrentMaturities


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6504600460046004591158615861
Percentage of DebtInstrumentCarryingAmountExcludingCurrentMaturities100.0100.0100.0100.0100.0100.0100.0

trv:DebtInstrumentCarryingAmountExcludingCurrentMaturities us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trv:SeniorNotes255DueApril2050, us-gaap:SeniorNotes


Debt
Period End2020-12-31
Value500
Percentage of DebtInstrumentCarryingAmountExcludingCurrentMaturities7.7

trv:DebtLongTermAndShortTerm

trv:DebtLongTermAndShortTerm


Debt
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6604660466046604646163616361
Percentage of DebtLongTermAndShortTerm100.0100.0100.0100.0100.0100.0100.0

trv:DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfFixedMaturityPortfolioOnPretaxBasis

trv:DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfFixedMaturityPortfolioOnPretaxBasis


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.01.01.01.00.010.011.01.00.010.01
Percentage of DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfFixedMaturityPortfolioOnPretaxBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfShareholdersEquityOnAfterTaxBasis

trv:DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfShareholdersEquityOnAfterTaxBasis


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.01.01.01.00.010.011.01.00.010.01
Percentage of DebtSecuritiesAvailableForSaleCreditLossesRecognizedInEarningsForThePeriodAsPercentageOfShareholdersEquityOnAfterTaxBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:DeferredTaxLiabilitiesTaxCutsandJobsActof2017DiscountedReservesTransitionAdjustment

trv:DeferredTaxLiabilitiesTaxCutsandJobsActof2017DiscountedReservesTransitionAdjustment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value96115159560
Percentage of DeferredTaxLiabilitiesTaxCutsandJobsActof2017DiscountedReservesTransitionAdjustment100.0100.0100.0100.0

trv:EstimatedFairValueOfPutCallOption

trv:EstimatedFairValueOfPutCallOption


Estimated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4000000.05000000.05000000.07000000.07000000.07000000.08000000.07000000.07000000.010000000.010000000.0
Percentage of EstimatedFairValueOfPutCallOption100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:EstimatedFairValueOfPutCallOption us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Estimated
Period End2020-12-312019-12-312018-12-31
Value5000000.08000000.010000000.0
Percentage of EstimatedFairValueOfPutCallOption100.0100.0100.0

trv:FairValueOfFixedMaturitiesForWhichCompanyReceivedBrokerQuote

trv:FairValueOfFixedMaturitiesForWhichCompanyReceivedBrokerQuote


Fair
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value3.03.00.02840321910489139101777597838573879311793111120140134130126161150145152128129151153162
Percentage of FairValueOfFixedMaturitiesForWhichCompanyReceivedBrokerQuote100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:FairValueOfFixedMaturitiesForWhichCompanyUsedInternalPricingMatrix

trv:FairValueOfFixedMaturitiesForWhichCompanyUsedInternalPricingMatrix


Fair
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value89899473102789682105621461271231081799914696116101177103929213313414194103801021021041039788
Percentage of FairValueOfFixedMaturitiesForWhichCompanyUsedInternalPricingMatrix100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:FairValueOfOwnedSecuritiesPledgedIntoALloydsTrustAccountToSupportCapitalRequirementsForTheCompanysOperationsAtLloyds us-gaap:ConsolidatedEntities

trv:FairValueOfOwnedSecuritiesPledgedIntoALloydsTrustAccountToSupportCapitalRequirementsForTheCompanysOperationsAtLloyds

srt:ParentCompany


Fair
Period End2020-12-312019-12-31
Value3534
Percentage of FairValueOfOwnedSecuritiesPledgedIntoALloydsTrustAccountToSupportCapitalRequirementsForTheCompanysOperationsAtLloyds100.0100.0

srt:Subsidiaries


Fair
Period End2020-12-312019-12-31
Value119173
Percentage of FairValueOfOwnedSecuritiesPledgedIntoALloydsTrustAccountToSupportCapitalRequirementsForTheCompanysOperationsAtLloyds340.0508.8

trv:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

trv:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour


Lessee
Period End2020-09-30
Value63
Percentage of LesseeOperatingLeaseLiabilityToBePaidAfterYearFour100.0

trv:MinimumVieEquityInterestPercentageToBeConsideredSignificant

trv:MinimumVieEquityInterestPercentageToBeConsideredSignificant


Minimum
Period End2020-12-31
Value20.0
Percentage of MinimumVieEquityInterestPercentageToBeConsideredSignificant100.0

trv:OtherAssetsCondensed us-gaap:ConsolidatedEntities

trv:OtherAssetsCondensed

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value330336649692
Percentage of OtherAssetsCondensed100.0100.0100.0100.0

trv:OtherLiabilitiesCondensed us-gaap:ConsolidatedEntities

trv:OtherLiabilitiesCondensed

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value262239496524
Percentage of OtherLiabilitiesCondensed100.0100.0100.0100.0

trv:PercentChangeInMonthlyPriceRequiringEvaluation

trv:PercentChangeInMonthlyPriceRequiringEvaluation


Percent
Period End2020-12-31
Value10.0
Percentage of PercentChangeInMonthlyPriceRequiringEvaluation100.0

trv:PercentGuaranteedByOrFullyCollateralizedBySecuritiesIssuedByGnmaFnmaOrFhlmc us-gaap:InvestmentType

trv:PercentGuaranteedByOrFullyCollateralizedBySecuritiesIssuedByGnmaFnmaOrFhlmc

us-gaap:CollateralizedDebtObligations


Percent
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value65.00.540.520.550.510.480.460.420.43
Percentage of PercentGuaranteedByOrFullyCollateralizedBySecuritiesIssuedByGnmaFnmaOrFhlmc100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:PercentOfFixedMaturitiesForWhichPricingServiceEstimatesFairValue

trv:PercentOfFixedMaturitiesForWhichPricingServiceEstimatesFairValue


Percent
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value99.099.099.099.00.990.990.990.990.990.990.990.990.980.980.980.980.980.980.980.980.980.980.980.980.980.980.980.980.980.980.980.980.980.98
Percentage of PercentOfFixedMaturitiesForWhichPricingServiceEstimatesFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForVariousObligations

trv:PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForVariousObligations


Pledged
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value525437353528395968
Percentage of PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesForVariousObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:ReinsuranceRecoverablesGrossExcludingStructuredSettlementsAndMandatoryPoolsAndAssociations

trv:ReinsuranceRecoverablesGrossExcludingStructuredSettlementsAndMandatoryPoolsAndAssociations


Reinsurance
Period End2020-12-312019-12-31
Value37313476
Percentage of ReinsuranceRecoverablesGrossExcludingStructuredSettlementsAndMandatoryPoolsAndAssociations100.0100.0

trv:ReinsuranceRecoverablesMandatoryPoolsAndAssociations

trv:ReinsuranceRecoverablesMandatoryPoolsAndAssociations


Reinsurance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value180118862005201120542015190918972549202015681745
Percentage of ReinsuranceRecoverablesMandatoryPoolsAndAssociations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:ReinsuranceRecoverablesStructuredSettlements

trv:ReinsuranceRecoverablesStructuredSettlements


Reinsurance
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value296429652990310631683204328433483165329133803456
Percentage of ReinsuranceRecoverablesStructuredSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedDividendEquivalentsNumber us-gaap:AwardType

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedDividendEquivalentsNumber

trv:RestrictedStockUnitsAndDeferredStockUnits


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value394.0285.0329.0379.0408.0396.0387.0372.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedDividendEquivalentsNumber100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PerformanceShares


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value29751.022359.024876.026584.028480.040663.038738.014584.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedDividendEquivalentsNumber7551.07845.37561.17014.26980.410268.410009.83920.4

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesOriginallyAuthorized us-gaap:PlanName

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesOriginallyAuthorized

trv:TheTravelersCompaniesInc2014StockIncentivePlan


Share
Period End2020-12-31
Value10000000.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesOriginallyAuthorized100.0

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingAggregateIntrinsicValue

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingAggregateIntrinsicValue


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value19622417636
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingAggregateIntrinsicValue100.0100.0100.0100.0

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingWeightedAverageExercisePrice

trv:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingWeightedAverageExercisePrice


Share
Period End2021-06-302021-03-312020-12-312020-09-30
Value123.9122.61117.47114.76
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0

trv:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

trv:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented

trv:Automobile, trv:BusinessAndInternationalInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value34023055265422092086
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented100.0100.0100.0100.0100.0

trv:Automobile, trv:PersonalInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value25412631253624032024
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented74.786.195.6108.897.0

trv:CommercialMultiPeril, trv:BusinessAndInternationalInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value38243513317831173109
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented112.4115.0119.7141.1149.0

trv:FidelityAndSurety, trv:BondAndSpecialtyInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value391372389399386
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented11.512.214.718.118.5

trv:Property, trv:BusinessAndInternationalInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value760750830877702
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented22.324.531.339.733.7

trv:WorkersCompensation, trv:BusinessAndInternationalInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1083210815107631053510211
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented318.4354.0405.5476.9489.5

us-gaap:GeneralLiability, trv:BondAndSpecialtyInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value21041786176219121968
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented61.858.566.486.694.3

us-gaap:GeneralLiability, trv:BusinessAndInternationalInsurance


Shortduration
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value54754899421039654001
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented160.9160.4158.6179.5191.8

us-gaap:PropertyAndCasualtyPersonalInsuranceProductLine, trv:PersonalInsurance


Shortduration
Period End2020-12-312019-12-31
Value13891152
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented40.837.7

trv:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented us-gaap:ProductOrService, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment, country:CA, trv:PersonalInsurance


Shortduration
Period End2020-12-312019-12-312018-12-31
Value708718676
Percentage of ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetSubtotalForSeparatelyPresented20.823.525.5

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesAmountRelatedToCededReserves

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesAmountRelatedToCededReserves


Supplemental
Period End2020-12-31
Value61
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesAmountRelatedToCededReserves100.0

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance


Supplemental
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value10771088108810301003
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance100.0100.0100.0100.0100.0

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance us-gaap:ConsolidationItems, us-gaap:ProductOrService

us-gaap:MaterialReconcilingItems, trv:OtherInsuranceContracts


Supplemental
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5.05.05.05.03.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance0.50.50.50.50.3

us-gaap:OperatingSegments, us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Supplemental
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value10721083108310251000
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance99.599.599.599.599.7

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, trv:WorkersCompensation, trv:BusinessAndInternationalInsurance


Supplemental
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value929911909862832
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance86.383.783.583.783.0

us-gaap:OperatingSegments, us-gaap:GeneralLiability, trv:BusinessAndInternationalInsurance


Supplemental
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value143172174163168
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance13.315.816.015.816.7

trv:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance us-gaap:ProductOrService

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Supplemental
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value10771088108810301003
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDiscountDeductedFromReservesNetOfReinsurance100.0100.0100.0100.0100.0

trv:TerrorismRiskInsuranceProgramAnnualAggregateIndustryLossMinimumInOrderForLossToBeCoveredMaximum

trv:TerrorismRiskInsuranceProgramAnnualAggregateIndustryLossMinimumInOrderForLossToBeCoveredMaximum


Terrorism
Period End2020-12-31
Value200
Percentage of TerrorismRiskInsuranceProgramAnnualAggregateIndustryLossMinimumInOrderForLossToBeCoveredMaximum100.0

trv:TerrorismRiskInsuranceProgramCompanysEstimatedDeductible

trv:TerrorismRiskInsuranceProgramCompanysEstimatedDeductible


Terrorism
Period End2020-12-31
Value2610
Percentage of TerrorismRiskInsuranceProgramCompanysEstimatedDeductible100.0

trv:UnamortizedPurchasePriceAdjustment

trv:UnamortizedPurchasePriceAdjustment


Unamortized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value41434446474950
Percentage of UnamortizedPurchasePriceAdjustment100.0100.0100.0100.0100.0100.0100.0

trv:UnamortizedPurchasePriceAdjustment us-gaap:DebtInstrument, us-gaap:LongtermDebtType

trv:JuniorSubordinatedDebentures7.625PercentDueDecember2027, us-gaap:JuniorSubordinatedDebt


Unamortized
Period End2020-12-312019-12-312018-12-312017-12-31
Value10.0111213
Percentage of UnamortizedPurchasePriceAdjustment24.425.627.328.3

trv:JuniorSubordinatedDebentures8.312PercentDueJuly2046, us-gaap:JuniorSubordinatedDebt


Unamortized
Period End2020-12-312019-12-312018-12-312017-12-31
Value17181818
Percentage of UnamortizedPurchasePriceAdjustment41.541.940.939.1

trv:JuniorSubordinatedDebentures8.50PercentDueDecember2045, us-gaap:JuniorSubordinatedDebt


Unamortized
Period End2020-12-312019-12-312018-12-312017-12-31
Value14141415
Percentage of UnamortizedPurchasePriceAdjustment34.132.631.832.6

trv:UnfundedCommitmentsToPrivateEquityLimitedPartnershipsRealEstatePartnershipsAndOther

trv:UnfundedCommitmentsToPrivateEquityLimitedPartnershipsRealEstatePartnershipsAndOther


Unfunded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value16501660176016501630168016601550157015601600160016001610156015501580160016001650169017201710165016501620163015701590153015201480140013201270122011801200115011701240123012601320
Percentage of UnfundedCommitmentsToPrivateEquityLimitedPartnershipsRealEstatePartnershipsAndOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

trv:UnrecognizedTaxBenefitsForWhichDeductibilityIsCertainButTimingIsUncertain

trv:UnrecognizedTaxBenefitsForWhichDeductibilityIsCertainButTimingIsUncertain


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1.03.02.03.06.012211921
Percentage of UnrecognizedTaxBenefitsForWhichDeductibilityIsCertainButTimingIsUncertain100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedInvestmentIncomeReceivable


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value608569603554596567618575615591624583610567606568602575630586627599642613655628685663710686734673734686752705751717768737768736791825
Percentage of AccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsHeldByInsuranceRegulators

us-gaap:AssetsHeldByInsuranceRegulators


Assets
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value445043404230441045604660478047704940
Percentage of AssetsHeldByInsuranceRegulators100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value42323873518648914695269428823023242814887125357428591556165816701436136929393391263621002791
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:InvestmentType

trv:USStatesAndPoliticalSubdivisionsLocalGeneralObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value11881079137012671225907829881692468219135201215444410410303271754954690577644
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax28.127.926.425.926.133.728.829.128.531.530.825.227.125.028.524.724.621.119.825.728.126.227.523.1

trv:USStatesAndPoliticalSubdivisionsPreRefunded


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value20520421916013389887275798081111123142163172184190227234231247302306324332348359445
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax4.85.34.23.32.83.33.12.43.15.311.215.115.014.39.19.810.312.813.97.76.98.811.80.00.00.011.90.00.00.0

trv:USStatesAndPoliticalSubdivisionsRevenue


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value787699909829818593586626499336172113171177338324317238215608787563472575
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax18.618.017.516.917.422.020.320.720.622.624.221.123.020.621.719.519.016.615.720.723.221.422.520.6

trv:USStatesAndPoliticalSubdivisionsStateGeneralObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value8581101918365646953371813192144454536369512410297137
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.02.11.91.91.82.42.22.32.22.52.52.42.62.42.82.72.72.52.63.23.73.94.64.9

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1518262728248.01314127.04.08.09.014172433345456524550526548343733
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.40.50.50.60.60.90.30.40.60.81.00.71.11.00.91.01.42.32.51.81.72.02.10.00.00.01.70.00.00.0

us-gaap:OtherDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1813165123822314218481611951238982482156134161231478587589528508103910628345236877141036844828969767
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax42.842.645.947.346.530.341.541.040.432.421.925.021.726.930.735.435.336.837.135.431.331.624.90.00.00.030.20.00.00.0

us-gaap:RedeemablePreferredStock


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2.02.02.02.01.00.02.03.03.03.02.03.04.05.05.06.06.07.06.07.06.06.07.08.010.01110.09.09.06.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.00.10.00.00.00.00.10.10.10.20.30.60.50.60.30.40.40.50.40.20.20.20.30.00.00.00.40.00.00.0

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value991071391581741479110190645451667687979797100128132131124142147170165167178179
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.32.82.73.23.75.53.23.33.74.37.69.58.98.85.65.95.86.87.34.43.95.05.90.00.00.05.90.00.00.0

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value22652063259923472259165415671648131992048934250253696894294476171216842099158613931311119416001688168417001436
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax53.553.350.148.048.161.454.454.554.361.868.763.967.762.462.256.856.553.052.057.361.960.266.30.00.00.060.50.00.00.0

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value3832384349531920207.04.01.01.02.04.09.010.010.09.02736278.024284536314039
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.90.80.70.91.02.00.70.70.80.50.60.20.10.20.30.50.60.70.70.91.11.00.40.00.00.01.30.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value11929611496342329334020484910968806861782282454375045255141320118
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:InvestmentType

trv:USStatesAndPoliticalSubdivisionsLocalGeneralObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value24842.08.01.09.04.02.01.0141202331361272667791591829.01.01.03.05.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax20.228.418.216.31.62.113.86.12.56.914.121.315.518.514.629.432.236.436.117.31.80.70.94.2

trv:USStatesAndPoliticalSubdivisionsRevenue


Available
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-12-312014-12-31
Value12446.00.03.02.01.00.08.07414788911951631341476.03.04.04.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax10.114.912.20.00.76.93.00.03.98.713.410.013.310.722.425.730.729.211.52.11.23.4

trv:USStatesAndPoliticalSubdivisionsStateGeneralObligation


Available
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312014-12-31
Value1.04.00.00.00.00.00.02.0132112123.09.01120223.02.01.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.81.40.00.00.00.00.01.01.51.91.41.71.73.94.54.64.45.80.60.8

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-06-302014-09-302014-06-302013-12-31
Value3.04.00.00.02.01.01.02.05.0118.08.010.0115.02.03.01.01.01.04.08.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2.51.40.00.06.93.02.51.00.61.00.91.25.64.82.00.50.60.30.00.00.00.0

us-gaap:OtherDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value701419.0356240518253215658359256338910079771111383152135288187147459912695299
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax58.847.681.871.498.495.762.175.880.076.568.754.064.056.756.234.631.425.427.459.694.595.790.00.00.00.083.90.00.00.0

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value1.01.00.05.03.03.04.01638624940116.05.07.06.01.01.01.06.03.06.03.04.07.06.018
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.80.30.01.210.39.110.07.84.55.75.65.86.22.62.01.61.21.91.80.71.90.00.00.03.40.00.00.0

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value371322.0141.0126.03.01.02420740223723049127153313352181.04.09.0461542410.03380362
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax31.144.618.228.61.62.820.79.12.511.824.436.726.933.527.555.762.471.669.834.61.82.82.80.00.00.08.50.00.00.0

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value8.0180.01.00.01.02.06.0162923198.05.05.04.05.02.01.01.0163.07.02.05.07.06.012
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax6.76.10.00.20.03.05.02.91.92.62.62.84.52.22.00.91.03.81.80.75.00.00.00.04.20.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value714657028668830677366543065630652816502164784642166360162985626746209361316607276048260269596506014959975594905887859688601035991660801610436184161995621965996060494605786082961003603136077759994600565976760170
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:InvestmentType

trv:USStatesAndPoliticalSubdivisionsLocalGeneralObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value175901771917289170191604015893154901541815187148791447314272139921359313488137981401014082139551393013816132421274412366
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis24.625.225.125.124.524.223.723.723.423.222.822.722.321.922.022.723.223.423.423.223.022.321.620.3

trv:USStatesAndPoliticalSubdivisionsPreRefunded


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value34823365332524582328216619681991225125152772291134323638375836664112442849685138549056405813628769666893722974598096832090748458
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis4.94.84.83.63.63.33.03.13.53.94.44.65.55.96.16.06.87.38.38.59.29.59.910.511.611.511.912.213.113.414.613.9

trv:USStatesAndPoliticalSubdivisionsRevenue


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value11048117481180611871102981015897319666970197579755973098571051211307113411158911349109101066810270991494929833
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis15.516.717.217.515.715.514.914.915.015.215.315.415.716.918.418.719.218.818.317.717.116.716.116.2

trv:USStatesAndPoliticalSubdivisionsStateGeneralObligation


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value132413371343116011441149116711961273130013291328138413911443155516121653171718781958194419782467
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.91.92.01.71.71.81.81.82.02.02.12.12.22.22.42.62.72.72.93.13.33.33.44.1

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value102496210289521023101611671118111211841255128612811326150515591537155916311703174517941829193920492117232024352549253925522185
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis1.41.41.51.41.61.51.81.71.71.82.02.02.02.12.52.62.52.62.72.82.93.03.13.23.43.53.84.04.14.14.13.6

us-gaap:OtherDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value3170330663296832959929619300343044230518303712987329307288252810227000253112457223835233782273723039228582292122854230822234122180223902207221541209142047217863
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis44.443.643.143.745.345.846.646.946.946.546.145.844.843.541.340.539.438.838.138.338.138.538.838.737.237.036.836.234.833.732.929.4

us-gaap:RedeemablePreferredStock


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value12232322224648495078778686879090898787969810810310711311312212613212913326
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.0

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value17221939222225722910316531923064283926012557250224992495233420821675169016141651170217991863187419051986205221142154220222632744
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis2.42.83.23.84.44.84.94.74.44.14.04.04.04.03.83.42.82.82.72.72.83.03.23.13.23.33.43.53.53.63.64.5

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value3344434169337633250829810293662835628271284122845128329282412866529134299963036031323315123155031614315343074030027303623167031484318953224633405340193448835863
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis46.848.649.148.045.644.743.443.543.944.344.544.845.746.948.950.051.852.352.952.652.651.751.050.952.752.552.552.854.054.955.559.0

us-gaap:USTreasuryAndGovernment


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value35602530211120832046200320762001200020292076204520412051208020642023204320312046203821282202232420252036202220502060219222882148
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.03.63.13.13.13.13.23.13.13.23.33.23.33.33.43.43.33.43.43.43.43.63.73.93.43.43.33.43.33.53.73.5

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost


Available
Period End2020-12-31
Value18200
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue


Available
Period End2020-12-31
Value19936
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue100.0