Y


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

Table of contents



us-gaap:CommonStockValue

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:BenefitsLossesAndExpenses

us-gaap:ComprehensiveIncomeNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:GainsLossesOnExtinguishmentOfDebt
dei:LegalEntity, us-gaap:DebtInstrument

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

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

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:PremiumsEarnedNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:ProfitLoss

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:Revenues

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:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:Cash
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:ConsolidatedEntities

us-gaap:Goodwill
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill
us-gaap:StatementBusinessSegments
us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:IntangibleAssetsNetIncludingGoodwill
us-gaap:StatementBusinessSegments

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:EquitySecuritiesFvNi
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType
us-gaap:InvestmentType

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:LongTermDebt
dei:LegalEntity, us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividends

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferredLiabilitiesIncurred
us-gaap:CededCreditRisk, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskPercentage1
us-gaap:CededCreditRiskCollateralization, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:CreditRatingAMBest, us-gaap:CededCreditRisk, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:CreditRatingAMBest, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DilutiveSecurities

us-gaap:EarlyRepaymentOfSeniorDebt

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EquitySecuritiesFvNiGainLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
us-gaap:InvestmentType

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:FinancialInstrument
us-gaap:InvestmentType
dei:LegalEntity
us-gaap:ImpairmentOfOilAndGasProperties

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi

us-gaap:IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInPrepaidReinsurancePremiums

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInUnearnedPremiums

us-gaap:IncurredClaimsPropertyCasualtyAndLiability
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:InvestmentIncomeDividend

us-gaap:InvestmentIncomeInvestmentExpense

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherCostAndExpenseOperating
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromProductiveAssets

us-gaap:PaymentsForProceedsFromShortTermInvestments

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireTradingSecuritiesHeldforinvestment

us-gaap:PremiumsWrittenGross
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:PremiumsWrittenNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRepaymentsOfOtherDebt

us-gaap:ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodTax
us-gaap:StatementEquityComponents

us-gaap:ReinsuranceRecoverableCreditLossExpenseReversal

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:TemporaryEquityOtherChanges

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

y:AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

y:CommissionsBrokerageAndOtherUnderwritingExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

y:ForeignCurrencyTranslationGainLossUnrealized
us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments
y:GainOnPartialSettlementAndRemeasurementOfFairValueOfOutstandingContingentConsiderationLiabilities

y:GainOnReductionOfContingentConsiderationLiabilities
dei:LegalEntity

y:GeneralAndAdministrativeExpenseAccrualAdjustment
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

y:GrossRealizedGainsDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities

y:GrossRealizedLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities

y:InvestmentIncome

y:NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

y:OtherChangesInLossReservesNetOfReinsuranceRecoverables

y:PartnershipsAndOtherInvestmentIncomeLoss

y:PaymentsForProceedsFromMortgageNotesReceivable

y:PercentageOfDebtSecurities
us-gaap:ExternalCreditRatingByGrouping
us-gaap:ExternalCreditRatingByGrouping
y:PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments, us-gaap:TimingOfTransferOfGoodOrService
y:RevenuePercentage

y:UnderwritingIncomeLossBeforeTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AllowanceForLoanAndLeaseLossesRealEstate

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:InvestmentType

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:ConsolidatedEntities
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecurities
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleSecuritiesAmortizedCost
us-gaap:InvestmentType

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles

us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByMeasurementBasis

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
us-gaap:ConsolidatedEntities
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:DeferredIncomeTaxAssetsNet
us-gaap:ConsolidatedEntities

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsForeign

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsImpairmentLosses

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsPolicyholderLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost

us-gaap:DeferredTaxLiabilitiesInvestments

us-gaap:DeferredTaxLiabilitiesOther
us-gaap:RetirementPlanName
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
dei:LegalEntity
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:ConsolidatedEntities
us-gaap:RetirementPlanName
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsCurrentFiscalYear
dei:LegalEntity
us-gaap:DefinedBenefitPlanFairValueOfPlanAssets
us-gaap:ConsolidatedEntities

us-gaap:EquitySecuritiesFvNiCost
us-gaap:ConsolidatedEntities

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
us-gaap:InvestmentType

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:FundsHeldUnderReinsuranceAgreementsAsset

us-gaap:GoodwillGross
us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxesReceivable
us-gaap:ConsolidatedEntities

us-gaap:IntangibleAssetsGrossExcludingGoodwill
us-gaap:StatementBusinessSegments

us-gaap:Investments

us-gaap:InvestmentsAndCash
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType
us-gaap:FairValueByMeasurementBasis
us-gaap:InvestmentType

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterRollingYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueInRollingYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths

us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsGross
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:LiabilityForAsbestosAndEnvironmentalClaimsNet
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:Subsegments

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

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:MarketableSecurities
us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByNoncontrollingOwners

us-gaap:MortgageLoansOnRealEstateCommercialAndConsumerNet

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherInvestments
us-gaap:ConsolidatedEntities
us-gaap:InvestmentSecondaryCategorization

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities

us-gaap:PremiumsReceivableAtCarryingValue

us-gaap:PrepaidReinsurancePremiums

us-gaap:RedeemableNoncontrollingInterestEquityCarryingAmount
us-gaap:ConsolidatedEntities

us-gaap:ReinsurancePayable

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

us-gaap:ReinsuranceRecoverablesAllowance
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

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

us-gaap:ReinsuranceRecoverablesOnPaidAndUnpaidLosses
us-gaap:CededCreditRiskCollateralization, us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType

us-gaap:ReinsuranceRecoverablesOnPaidLosses
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearEight
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearNine
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearSeven
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearSix
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTen
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsIncurredButNotReportedIbnrClaimsLiabilityNet
us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetNotSeparatelyPresented
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ShortdurationInsuranceContractsNumberOfReportedClaims
us-gaap:ShortdurationInsuranceContractsAccidentYear, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatutoryCapitalAndSurplusApplyingNationalAssociationOfInsuranceCommissionersNAICPractices

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue
us-gaap:InvestmentType

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersDeferredPolicyAcquisitionCosts

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersReservesForUnpaidClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersUnearnedPremiums
us-gaap:StatementBusinessSegments
us-gaap:SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts
us-gaap:StatementBusinessSegments
us-gaap:SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves
us-gaap:StatementBusinessSegments
us-gaap:SupplementaryInsuranceInformationUnearnedPremiums

us-gaap:TreasuryStockCommonValue

us-gaap:UnearnedPremiums
us-gaap:ValuationAllowancesAndReservesType
us-gaap:ValuationAllowancesAndReservesBalance

y:AvailableForSaleSecuritiesAllowanceForCreditLosses

y:AvailableForSaleSecuritiesShortTermInvestment
us-gaap:ConsolidatedEntities

y:AvailableForSaleSecuritiesShortTermInvestmentAmortizedCost

y:DeferredTaxLiabilitiesAcquisitionAccountingAndFairValueAdjustmentsOnLoans

y:FairValueOfInvestmentsDepositedWithGovernmentAuthorities

y:GoodwillAndOtherIntangibleAssets
us-gaap:StatementBusinessSegments

y:GoodwillAndOtherIntangibleAssetsAccumulatedAmortization
us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
y:IndefiniteLivedIntangibleAssetsAccumulatedAmortizationExcludingGoodwill
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments
y:IndefiniteLivedIntangibleAssetsGrossExcludingGoodwill
us-gaap:ConsolidatedEntities
y:InvestmentsInSubsidiaries

y:OperatingLeaseRightOfUseAssetAndPrepaidLeaseAsset

y:PrepaidLeaseAssetsNetOfLeaseAllowanceAndIncentives
us-gaap:ReinsurancePolicyType, us-gaap:Subsegments
y:ReinsuranceCoverage
us-gaap:StatementBusinessSegments, us-gaap:Subsegments
y:ShortDurationInsuranceContractsHistoricalClaimsRecoveryDurationYearNine

y:StockholdersEquityUnappropriated

y:StockholdersEquityUnavailableForDividendsOrAdvances

y:UnallocatedLossAdjustmentExpensePercentage

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Interest Expense
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
NonCurrent Assets
Deferred Income Tax Assets Net
Liabilities
Operating Lease Liability
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Common Stock Value
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
Weighted Average Number Of Diluted Shares Outstanding
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:CommonStockValue ██████████████████████████████████████▁▁▁▁▁17.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.47917.47917.47917.4799.1189.1189.1179.1189.118NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█13.91948913.998986NA14.27548714.31087414.356108NA14.42258114.43954514.485236NA14.93713515.18007515.418664NA15.45832415.41903415.420468NA15.43839915.43885915.464489NA15.90075916.00302316.014223NA16.34390416.44255616.683864NA16.76619216.78146116.822056NA16.93181116.95033710.973429NA8.8225568.9219728.935968NA9.0060039.133975NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█13.91948913.98941NA14.27548714.31087414.340669NA14.42258114.43954514.481255NA14.93713515.18007515.389283NA15.41601415.41903415.413698NA15.43839915.43885915.452191NA15.90075915.99496916.014223NA16.34390416.44255616.683864NA16.76619216.78146116.822056NA16.93181116.93054810.945269NA8.8118078.916628.928807NA9.0060039.124187NA
us-gaap:EarningsPerShareBasic ▆▆▅▅▅▃▅▅▆▇▁▆▆▅▅▃▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▅▅█▅▅▅▅▅▅▅▅29.016.4411.288.8612.39-25.192.26.2720.4630.4-48.319.0719.4411.159.96-20.386.69.684.5110.094.9910.09.866.0711.417.828.6111.49.0612.2812.246.756.7811.67-5.477.416.4651.174.382.171.697.994.174.077.266.31
us-gaap:EarningsPerShareDiluted ▆▆▅▅▅▃▅▅▆▇▁▆▆▅▅▃▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▄▅▅█▅▄▄▅▅▅▅▅29.016.3711.4699999999999998.8612.39-25.372.256.2720.4630.39-46.91000000000000419.0719.4411.049.95-20.96.69.674.51000000000000210.094.999.969.8300000000000026.0711.47.828.65999999999999711.49.0612.2812.2399999999999986.756.7811.67-7.6600000000000047.416.4551.064.43999999999999952.031.687.974.6499999999999994.077.246.25
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 EBT Margin us-gaap:ConsolidationItems us-gaap:OperatingSegments█▇█▇▄▄▅▆▅▄▅▃▂▁800.3767.7833.7722.7491.5464.7570.0635.5600.3510.4600.7413.7333.7248.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,y:AlleghanyCapitalCorporationSegment█▇█▇▄▄▅▆▅▄▅▃▂▁789.2759.1823.2713.8483.2457.3562.5628.0593.7505.0595.4407.5329.0242.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,y:ReinsuranceSegmentAndInsuranceSegment█▅▇▆▅▄▄▄▃▂▂▃▁▂11.18.610.58.98.37.47.57.56.65.45.36.24.75.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:BenefitsLossesAndExpenses ████▇▇▇▇▆▆▇▆▅▅▅▇▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▃▅▄▄▂▁▁▁▁▁▁▁▁2406.9272356.7832437.422355.0131997.5511949.1182239.0992030.6551882.4841764.8422117.8551827.5431525.821376.351459.8162189.8091413.7981324.5421360.6511407.4411448.4931266.6291138.791055.8941055.386992.041106.7561086.0291088.7961018.3191055.5361041.4881049.228970.1661427.7341078.5961089.839437.767228.09199.589204.694158.627178.477189.795162.422177.287
us-gaap:ComprehensiveIncomeNetOfTax ▇▅▆▆█▁▅▆▇█▁▆▆▅▆▃▆▆▄▆▅▆▅▄▅▆▅▅▆▆▆▆▄▆▄▆▅█▅▄▅▅▅▅▅▅482.6561.829236.164209.839598.714-661.911-20.232161.734461.58628.073-693.239236.399246.39230.374320.119-226.111249.983242.077-152.795189.472145.647267.608156.038-39.3724.923181.415146.61767.785334.491296.999206.627217.829-118.903259.29-156.121300.42995.982556.931121.445-127.235-13.614147.923111.048101.162-9.02371.532
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest █▅█▆▁▁▃▆▅▅▅▃▃▁▄▃▂▁▂▃▁▁▂▂▂▁▂▁▁▁▂▁15.9388.02215.17611.125-0.918-0.2544.49110.869.3747.6757.6614.5593.288-0.3935.1174.210.8480.1840.393.0160.1890.1480.4320.5680.6690.2110.8530.0250.254-0.2390.7270.206NANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▇▅▆▆█▁▅▆▇█▁▆▆▅▆▃▆▆▄▆▅▆▅▄▅▆▅▅▆▆▆▆▄▆▄▆498.5949.851251.34220.964597.796-662.165-15.741172.594470.954635.748-685.578240.958249.6829.981325.236-221.901250.831242.261-152.405192.488145.836267.756156.47-38.80225.592181.626147.4767.81334.745296.76207.354218.035-118.903259.29-156.121300.429NANANANANANANANANANA
us-gaap:GainsLossesOnExtinguishmentOfDebt NANA0.00.00.0-7.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainsLossesOnExtinguishmentOfDebt dei:LegalEntity,us-gaap:DebtInstrument y:AlleghanyCorporation,y:SeniorNotesDueTwentyTwentyNANA0.00.00.0-7.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest █▇▆▆▆▃▆▆▇█▁▇▇▆▆▃▆521.87296.93226.093167.9229.816-466.19261.731129.302376.189556.414-890.728349.872371.844208.604210.986-522.326140.12NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit █▇▇▆▇▃▆▆▇█▂▇▇▆▇▁▆▇▆▇▇▇▇▆▇▇▇▇▇▇█▆▆▇▄▆▆▇▆▆▆▆▆▆▆▆102.28158.86751.84530.25353.356-104.7225.55728.0171.356108.512-186.33760.41373.4437.42252.566-212.37937.46158.5524.86748.32856.27857.66857.0636.04561.90540.16355.36279.54753.18663.682100.89534.6133.28257.095-94.68825.4835.24350.99716.24913.783-0.61518.16917.02123.73621.91616.196
us-gaap:IncomeTaxesPaidNet ▆▄▅▄▄▄▃█▄▁▄▄▃▄▂▃▄▄▅▅▃▄▅▃▅▃▇█▇▇▄▆▆▁▂▇▇▄▃▄▄▃▄▃▅▃54.33222.59933.36719.23913.61824.604-4.53986.99718.985-39.6576.34511.1971.8620.275-20.457-1.92225.2935.94931.05436.7723.4611.73737.086-8.42332.823-1.78783.61696.3883.94871.10625.11449.80646.184-45.366-33.62666.51466.6617.017-1.51213.63820.4640.2623.6190.49243.7512.453
us-gaap:InterestExpense █▇█▇▇▆███▇█▇▇▇▇▇▇▇▆▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▅▃▂▂▂▂▂▁▁▁24.03723.75224.28323.31922.19418.35625.59425.70325.12923.53124.72722.18922.27721.53120.34220.80420.98920.93520.21520.68220.43320.26922.6222.69123.37523.09223.63822.67121.93221.81121.70321.51621.78521.73621.8421.76415.7439.0774.3774.3294.2684.4523.5670.6960.2160.219
us-gaap:InterestPaidNet █▁█▁▆▃▆▄▆▄▆▃▅▃▅▃36.11610.036.14910.25328.36517.06527.98720.82628.83519.36828.53917.24425.6216.94225.03816.926NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▇▆▆▆▆▃▅▅▇▇▁▆▇▆▆▃▅▆▅▆▅▆▆▅▆▆▆▆▆▆▆▆▆▆▄▆▆█▅▅▅▅▅▅▅▅403.651230.041159.1126.522177.378-361.21831.790.432295.459440.227-712.1284.9295.116171.575153.3-314.157101.811149.17669.5155.83177.071154.505156.196.53182.478125.209139.1186.315148.98204.88205.3113.167113.709196.294-92.6125.4109.309560.10337.719.15815.08271.3437.436.63266.27158.169
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▇▆▆▆▆▃▅▅▇▇▁▆▇▆▆▃▅▆▅▆▅▆▆▅▆▆▆▆▆▆▆▆▆▆▄▆▆█▅▅▅▅▅▅▅403.7229.2164.1126.5177.4-364.231.790.4295.5440.2-712.1284.9295.1170.3153.3-323.1101.8149.269.5155.877.1154.1153.596.5182.5125.209139.0186.3149.0204.9205.2113.2113.7196.3-92.9125.4109.4560.338.317.915.071.237.536.666.2NA
us-gaap:NetInvestmentIncome ▇█▇▇▆▆▇█▇▆▆▇▇▆▇▅▅▆▅▆▆▅▅▆▅▆▆▆▆▆▇▆▅▆▄▅▅▃▁▁▁▂▂▁▂▁126.931153.484130.918129.265118.691111.982136.618147.829142.745123.049122.806127.329126.273124.126129.159104.663101.656115.538106.129120.603106.86104.863104.189118.159103.087113.382116.915118.284114.094110.583131.163115.287100.403118.81178.4390.51490.8653.19426.73622.0528.54531.57931.46529.42432.69431.429
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▅▅▆▇▇▃▇▃▅▅▃▅▃▆▆▆▆▆▁▄▅█▄▅▅▃▂▁▆▅▃▆▂▃▃▇▃▅-2.2492.4619.17612.10914.814-13.73310.987-10.3433.175-0.885-14.949-1.53-10.5235.14.267.3689.9625.049-26.385-3.0411.63220.571-6.493-0.3862.888-10.755-20.025-26.0735.8050.432-16.2076.787-16.5-9.966-12.71811.014-14.883.213NANANANANANANANA
 us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▁█-2.2492.461NA12.10914.814-13.733NA-10.3433.175-0.885NA-1.53-10.5235.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PremiumsEarnedNet █▇▇▇▆▇▆▆▆▆▆▆▆▅▆▆▆▅▆▆▆▆▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▂▁▁▁▁▁▁▁▁1784.3511604.7631604.0141556.8591394.8681444.421434.8451389.9811356.0081297.3091306.0291225.3461236.9591207.8561262.1521239.7211243.9291209.1881239.1811253.5151261.5161221.5651089.3211049.0711074.7231017.1711121.4911136.2151098.9441053.9971055.981039.9081068.3151075.0131110.0911092.7751095.932434.207192.572190.209183.878180.98193.993190.632188.809194.7
us-gaap:ProfitLoss █▇▆▆▆▃▅▆▇█▁▇▇▆▆▃▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▆▆▆▅▆419.589238.063174.248137.647176.46-361.47236.174101.292304.833447.902-704.391289.459298.404171.182158.42-309.947102.659149.3669.904158.84777.26154.653156.5397.098183.147125.42139.917186.34149.234204.641205.978113.373113.709196.294-92.612125.444NANANANANANANANANANA
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▃▃█▂▂▂▇▂▂▂▄▂▁▁▅▅▅▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▁▁▁▁▁▁▁▁800.425767.8352663.5723.785492.701467.8492300.8638.478603.906514.1231227.1438.338342.725251.6271670.81667.4831553.9181532.4521455.31614.6161582.0311478.951352.41189.0371300.4381157.6231302.11351.9161291.2161286.6421362.51189.4711196.2191223.5551240.41229.51234.3911048.867282.0232.53219.161248.136232.9250.163250.609251.652
us-gaap:Revenues █▇▇▇▆▄▆▆▆▆▄▆▅▅▅▅▄▄▄▅▅▄▄▄▄▃▄▄▄▄▄▄▄▄▄▄▄▃▁▁▁▁▁▁▁▁2928.7972653.7132663.52522.9132227.3671482.9262300.82159.9572258.6732321.2561227.12177.4151897.6641584.9541670.81667.4831553.9181532.4521455.31614.6161582.0311478.951352.41189.0371300.4381157.6231302.11351.9161291.2161286.6421362.51189.4711196.2191223.5551240.41229.51234.3911048.867282.0232.53219.161248.136232.9250.163250.609251.652
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets ███▇▇▇▇▇▇▇▇▇▆▆▇▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅▁▁▁▁▁30491.66129385.88328927.0128452.57127620.87125752.94126931.60426490.83126356.37825793.05725344.89625795.88425085.88725097.25625384.31725714.23524529.48823939.14123756.59124116.99923814.78823055.34322846.33323434.13523928.28823560.93423489.43623929.46623841.90823494.33623361.08823241.75122890.0822804.54622807.96722757.64222418.69221775.1546478.0896412.3246615.8676529.9996431.699NANANA
us-gaap:Liabilities ███▇▇▇▇▇▇▇▇▆▆▆▆▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▁▁▁▁▁21108.90820456.43919937.48119619.29718936.72617687.51817950.11717481.3217494.89217380.84917482.42417062.29216546.12616586.22516763.72417409.73315993.54415680.8215741.92615934.69215823.27315257.74115265.90715973.34816277.90515922.62116007.39216514.99916434.60916356.25716413.56716502.1816391.70816179.2516404.1816176.57316138.56715592.0543552.4123564.6693586.4183478.0173522.831NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▇▇▇▇▇▇▇▆▆▇▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅▁▁▁▁▁30491.66129385.88328927.0128452.57127620.87125752.94126931.60426490.83126356.37825793.05725344.89625795.88425085.88725097.25625384.31725714.23524529.48823939.14123756.59124116.99923814.78823055.34322846.33323434.13523928.28823560.93423489.43623929.46623841.90823494.33623361.08823241.75122890.0822804.54622807.96722757.64222418.69221775.1546478.0896412.3246615.8676529.9996431.699NANANA
us-gaap:StockholdersEquity ███▇▇▇██▇▇▆▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▁▁▁▁▁9142.0318695.8818755.728596.3958456.2397857.0628776.7348828.6588685.9148236.4877692.718595.0858404.3898373.48514.0638201.0238435.2548184.8497939.9458105.1227917.7967771.7367554.7077452.1717641.7057630.2447473.4287405.6457398.2137128.0566923.7576716.5346498.3726625.2966403.7876581.0696280.1256183.12925.6772847.6553029.4493051.9822908.868NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Cash ▅▆▄▆██▆▅▄▄▅▄▃▄▄▄▄▃▃▃▃▃▃▃▄▃▃▃▃▃▃▃▃▃▄▃▃▃▁▁▁▁▁▁▁▁871.4591197.474791.4421230.5791652.6711555.1851179.098897.477824.818778.0641038.763646.908623.223711.04838.375701.841643.685624.445594.091568.907510.819509.743475.267563.187647.901537.485605.259607.605419.455481.414498.315414.682481.161574.879649.524571.313404.615520.21684.74990.47985.48464.88176.741103.45984.18255.775
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▅▂▅█▇▅▃▂▂▄▁871.4591197.474791.4421230.5791652.6711555.1851179.098897.477824.818778.0641038.763646.908NANA838.375NANANA594.091NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:PropertyPlantAndEquipmentNet █▇▇▇▇▆▆▆▆▅▅▅▅▅▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁302.848269.79267.872270.178272.36208.3205.397206.346202.48199.045195.243196.314197.678198.707125.337130.524130.42111.42112.92109.821104.97799.958101.30695.7496.88995.34288.9186.64682.70667.77758.97455.0835.10533.21834.11831.09831.54122.30417.90618.82720.26920.18919.504NANANA
us-gaap:Goodwill █████▇▇▆▆▆▆▅▅▅▄▄▄▄▄▄▄▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁627.612614.114614.163612.394613.054530.228523.021484.556481.212455.993455.142346.022346.27345.306334.905333.748324.936284.974284.974277.057271.816141.015141.015111.904111.904111.904111.90499.89799.74799.74799.74799.74783.44783.44783.44782.49582.49548.09548.095NANANA48.095NANANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:TradeNames,y:AlleghanyCapitalCorporationSegmentNANA215.5NANANA171.2NANANA176.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments y:StateInsuranceLicenses,y:InsuranceSegmentNANA25.1NANANA25.1NANANA25.1NANANA25.1NANANA25.8NANANA25.8NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill █████▇▇▆▆▅▆▅▅▅▅▅▅▄▄▄▃▂▂▁▁▁▁▁▁▁▁▁▁▁▁▂▃▄▁801.666774.797787.462799.01808.933688.233685.953588.178587.807549.449553.136465.83463.544467.475459.037464.956465.604374.915378.68358.233346.407209.704212.79137.193136.089135.039133.378131.307130.02129.145127.284125.808116.318117.142128.773165.669275.076382.47390.863NANANA94.217NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:CustomerRelationships,y:AlleghanyCapitalCorporationSegmentNANA285.4NANANA248.9NANANA187.4NANANA112.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:LeasesAcquiredInPlaceMarketAdjustment,y:ReinsuranceSegmentNANA-2.1NANANA-4.2NANANA-8.6NANANA-11.4NANANA-14.3NANANA-17.2NANANA-20.1NANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:LicensingAgreements,y:AlleghanyCapitalCorporationSegmentNANA119.0NANANA119.5NANANA45.6NANANA52.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:OtherIntangibleAssets,y:AlleghanyCapitalCorporationSegmentNANA26.1NANANA2.8NANANA0.4NANANA8.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments us-gaap:OtherIntangibleAssets,y:ReinsuranceSegmentNANA3.9NANANA4.2NANANA4.6NANANA4.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments y:AgencyRelationships,y:InsuranceSegmentNANA2.2NANANA4.2NANANA7.0NANANA7.3NANANA8.1NANANA8.9NANANA9.7NANANA10.4NANANA16.413.914.114.414.6NANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments y:LossAndLAEReservesAdjustment,y:ReinsuranceSegmentNANA-10.2NANANA-13.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments y:RenewalRights,y:InsuranceSegmentNANA0.3NANANA0.6NANANA1.0NANANA0.1NANANA0.1NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass,us-gaap:StatementBusinessSegments y:RenewalRights,y:ReinsuranceSegmentNANA17.8NANANA22.3NANANA25.5NANANA22.2NANANA26.2NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill NANA1401.7NANANA1209.0NANANA1008.2NANANA793.9NANANA663.7NANANA353.8NANANA245.3NANANA227.0NANANA212.2248.2357.6NA139.0NANANANANANANA
 us-gaap:IntangibleAssetsNetIncludingGoodwill us-gaap:StatementBusinessSegments y:AlleghanyCapitalCorporationSegmentNANA1203.3NANANA1007.6NANANA807.5NANANA602.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IntangibleAssetsNetIncludingGoodwill us-gaap:StatementBusinessSegments y:InsuranceSegmentNANA111.2NANANA114.4NANANA117.6NANANA118.1NANANA121.9NANANA124.9NANANA128.1NANANA131.1NANANA139.5136.4137.3NA139.0NANANANANANANA
 us-gaap:IntangibleAssetsNetIncludingGoodwill us-gaap:StatementBusinessSegments y:ReinsuranceSegmentNANA87.2NANANA87.0NANANA83.1NANANA73.3NANANA54.8NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA227.7NANANA209.7212.1216.2216.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EquitySecuritiesFvNi ▅▅▃▂▁▂▃▂▃▃▅█▇3580.2283312.2282718.9022163.351439.0621710.1932505.4962092.2672292.8032523.0793572.795028.5784714.079NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:AccruedIncomeTaxesCurrent ▁█6.1668.715NA5.773NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA16.247NANA2.5573.22NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebt █████▆▇▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▇▇▇▇█▇▇▇▇▇▇▇▇▇▅▁▁▁▁▁2063.6522080.2882135.9462041.612017.9031514.3811751.1131695.3031714.6521676.4211669.0391581.6761569.3671540.8651484.8971486.3751487.4751471.1831476.4891383.681383.6281383.5721390.341759.4881762.0691764.6031767.1252079.171785.6611790.0411794.4071798.7091803.0081807.2521811.4831815.661819.8251423.883299.035299.007298.979298.952298.923NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▁▄88.3295.84143.547NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ███▇▇▇██▇▇▆▇▇▇▇▇▇▇▇▇▇▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▁▁▁▁▁9142.0318695.8818755.728596.3958456.2397857.0628776.7348828.6588685.9148236.4877692.718595.0858404.3898373.48514.0638201.0238435.2548184.8497939.9458105.1227917.7967771.7367554.7077452.1717641.7057630.2447473.4287405.6457398.2137128.0566923.7576716.5346498.3726625.2966403.7876581.0696280.1256183.12925.6772847.6553029.4493051.9822908.868NANANA
us-gaap:CommonStockValue ██████████████████████████████████████▁▁▁▁▁17.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.4617.47917.47917.47917.4799.1189.1189.1179.1189.118NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ██████████████████████████████████████▁▁▁▁▁3612.7833613.7643613.4543609.7893609.5213610.1373608.6383608.3533608.0693608.6543612.833612.8623612.6153613.633612.1093611.93611.6013611.7093611.9933611.7343611.4893611.7153611.6313611.2863609.9183610.7823610.7173611.5193610.9763611.33613.1513612.5553612.2213612.7433619.9123626.7423626.5713626.154938.037937.547937.057928.251928.816NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▇▇▆▇▇▇▇▆▇▇▆▅▅▆▆▅▅▅▅▅▄▄▄▄▄▃▃▃▃▃▂▂▂▂▂▁▁▁▁▁6952.0266548.3756318.3346159.2626032.745855.3626435.1636403.486313.0486017.5895577.3626289.4066004.5065709.4275091.2824950.8785265.0355163.2245014.0484944.5344788.7034711.6324557.1274403.5834307.0534124.5753999.3663860.3023673.9873525.0073320.1273114.8763001.7092888.02691.7062784.322658.9882549.681990.3091952.6371933.3971976.6731900.358NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▅▅▇▆▅▂▄▅▄▃▁▁▁▂█▇▆▅▄▆▅▅▄▄▅▆▆▆▇▅▄▄▄▅▅▅▄▄▄▃▅▅▄303.196224.19452.402375.31291.993-129.343171.35223.266151.964-14.157-202.003-220.808-172.307-123.62618.118438.403350.357202.185109.284331.593297.952229.376116.273116.333252.234409.789353.584346.03464.561279.049186.93185.55480.892313.504250.508314.018139.031152.36155.53271.757218.149241.866170.262NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities █▇▅█▆▂▅▅▅▁▃▄▄▂▂▅496.887442.295253.099474.398316.622-7.285286.157254.67239.963-66.38578.641174.607154.344-5.16919.688222.166NANANANANANANANANANANANANA-115.73790.725248.07694.505150.55461.516289.09180.413-35.165-13.52177.217133.485-103.54-4.56676.72831.557-42.851
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂▅▂▁▂█▄▄▄▄▆▄▄▅▅▄-703.762102.643-691.448-864.334-621.502892.837-28.057-135.326-201.175-111.981476.019-115.379-47.57932.371126.625-158.973NANANANANANANANANANANANANA183.273-3.428-291.8-165.697-159.62930.167-128.92-685.543470.63651.706-17.089-98.49397.68-5.878-346.76548.6873.442
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▅▅█▁▅▅▅▄▄▅▃▄▅▅-119.66-127.859-16.794-45.35398.189-500.05319.618-44.3425.239-83.729-159.41-30.973-185.677-160.624-11.551-11.485NANANANANANANANANANANANANA-85.713-1.1-21.913-7.282-40.311-8.7330.0397.787-1.126-43.915-55.133-14.389-6.0-16.274289.314-51.83-7.342
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▂█▁▁▅█▇▅▅▂█-326.015406.032-439.137-422.09297.486376.087281.62172.65946.754-260.699391.855NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▃▅▅▅▃█▃▅▃▄▇▄▄▆▁▇▄▅▄▄▃▇▅▄▄▅▄▅▄▆▄▄▅▄▆▅▆▅▄▅▄▆-162.65958.63229.18324.087-165.136386.627-167.29727.471-143.409-88.546321.914-96.991-47.00995.181-435.662257.468-62.31116.322-63.885-46.92-191.403265.60653.042-36.613-135.314.895-71.09688.509-29.702126.845-118.208-121.62312.051-67.433173.62-4.554130.628-11.453-43.906-13.813-87.768112.469NANANANA
us-gaap:NetCashProvidedByUsedInOperatingActivities █▇▅█▆▂▅▅▅▁▃▄▄▂▂▅496.887442.295253.099474.398316.622-7.285286.157254.67239.963-66.38578.641174.607154.344-5.16919.688222.166NANANANANANANANANANANANANA-115.73790.725248.07694.505150.55461.516289.09180.413-35.165-13.52177.217133.485-103.54-4.56676.72831.557-42.851
us-gaap:NetIncomeLoss ▇▆▆▆▆▃▅▅▇▇▁▆▇▆▆▃▅▆▅▆▅▆▆▅▆▆▆▆▆▆▆▆▆▆▄▆▆█▅▅▅▅▅▅▅▅403.651230.041159.1126.522177.378-361.21831.790.432295.459440.227-712.1284.9295.116171.575153.3-314.157101.811149.17669.5155.83177.071154.505156.196.53182.478125.209139.1186.315148.98204.88205.3113.167113.709196.294-92.6125.4109.309560.10337.719.15815.08271.3437.436.63266.27158.169
us-gaap:ProfitLoss █▇▆▆▆▃▅▆▇█▁▇▇▆▆▃▆▆▆▆▆▆▆▆▆▆▆▆▆▇▇▆▆▆▅▆419.589238.063174.248137.647176.46-361.47236.174101.292304.833447.902-704.391289.459298.404171.182158.42-309.947102.659149.3669.904158.84777.26154.653156.5397.098183.147125.42139.917186.34149.234204.641205.978113.373113.709196.294-92.612125.444NANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂▅▂▁▂█▄▄▄▄▆▄▄▅▅▄-703.762102.643-691.448-864.334-621.502892.837-28.057-135.326-201.175-111.981476.019-115.379-47.57932.371126.625-158.973NANANANANANANANANANANANANA183.273-3.428-291.8-165.697-159.62930.167-128.92-685.543470.63651.706-17.089-98.49397.68-5.878-346.76548.6873.442
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▄▄▅▅█▁▅▅▅▄▄▅▃▄▅▅-119.66-127.859-16.794-45.35398.189-500.05319.618-44.3425.239-83.729-159.41-30.973-185.677-160.624-11.551-11.485NANANANANANANANANANANANANA-85.713-1.1-21.913-7.282-40.311-8.7330.0397.787-1.126-43.915-55.133-14.389-6.0-16.274289.314-51.83-7.342
us-gaap:PaymentsOfDividends NANA0.00.00.0215.013NANANANA0.00.00.0153.967NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▂▃▄▃▁▂▂▂▁▄█▂█▂▁35.92563.19280.50469.990.044.26831.97619.29412.66680.486209.5845.95214.83521.2687.499NANANA12.6422.390.053.28851.292151.97613.91426.63278.03362.53865.26594.6420.00.08.81331.576NANANANA43.91555.13314.8756.40216.5826.73652.37.517
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


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
Value17171717171717171717171717171717171717171717171717171717171717171717171717179.1189.1189.1179.1189.1189.118
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value13131414141414141415151515151515151516161616161616161616108.8225568.9219728.9359689.0060039.133975
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value13131414141414141415151515151515151515161616161616161616108.8118078.916628.9288079.0060039.124187
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value29.016.4411.288.8612.39-25.192.26.2720.4630.4-48.319.0719.4411.159.96-20.386.69.684.5110.094.9910.09.866.0711.417.828.6111.49.0612.2812.246.756.7811.67-5.477.416.4651.174.382.171.697.994.174.077.266.31
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value29.016.3711.478.8612.39-25.372.256.2720.4630.39-46.9119.0719.4411.049.95-20.96.69.674.5110.094.999.969.836.0711.47.828.6611.49.0612.2812.246.756.7811.67-7.667.416.4551.064.442.031.687.974.654.077.246.25
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Benefits Losses And Expenses

us-gaap:BenefitsLossesAndExpenses

us-gaap:BenefitsLossesAndExpenses


Benefits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value24062356243723551997194922392030188217642117182715251376145921891413132413601407144812661138105510559921106108610881018105510411049970142710781089437228199204158178189162177
Percentage of BenefitsLossesAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax300.7306.991.5325.4405.4416.697.3318.0311.7343.3172.6416.9445.2547.087.4131.391.086.493.587.291.685.684.288.881.285.785.080.384.379.177.587.687.779.3115.187.788.341.780.985.893.463.976.675.964.870.4

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4821.829236209598-661.911-20.232161461628-693.23923624630320-226.111249242-152.795189145267156-39.372418114667334296206217-118.903259-156.12130095556121-127.235-13.614147111101-9.02371
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax60.30.28.929.0121.5-141.5-0.925.376.4122.2-56.553.971.912.119.2-13.616.115.8-10.511.79.218.111.5-3.31.915.711.35.025.923.115.218.3-9.921.2-12.624.47.853.143.1-54.7-6.259.647.740.4-3.628.4

us-gaap:ComprehensiveIncomeNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value79-228.21283421-300.69371166187-48.501-48.724-141.201
Percentage of ComprehensiveIncomeNetOfTax16.4-12477.439.770.445.444.136.029.9-20.5-19.8-464.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax9.9-29.711.585.5-64.311.227.536.5-11.1-14.2-56.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Comprehensive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value403230126177-361.21890295440284295171
Percentage of ComprehensiveIncomeNetOfTax83.612577.460.329.654.655.964.070.1120.5119.8564.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.430.017.536.0-77.214.248.985.665.086.168.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-30
Value158.0221511-0.918-0.2544.491109.3747.6757.6614.5593.288-0.3935.1174.210.8480.1840.393.0160.1890.1480.4320.5680.6690.2110.8530.0250.254-0.2390.7270.206
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.01.00.61.5-0.2-0.10.21.71.61.50.61.01.0-0.20.30.30.10.00.00.20.00.00.00.00.10.00.10.00.0-0.00.10.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value4989.851251220597-662.165-15.741172470635-685.57824024929325-221.901250242-152.405192145267156-38.8022518114767334296207218-118.903259-156.121300
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.31.39.430.5121.3-141.5-0.727.078.0123.7-55.955.072.911.919.5-13.316.115.8-10.511.99.218.111.6-3.32.015.711.35.025.923.115.218.3-9.921.2-12.624.4

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2020-12-312020-09-302020-06-302020-03-31
Value000-7100000.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.00.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0-1.5

us-gaap:GainsLossesOnExtinguishmentOfDebt dei:LegalEntity, us-gaap:DebtInstrument

y:AlleghanyCorporation, y:SeniorNotesDueTwentyTwenty


Gains
Period End2020-12-312020-09-302020-06-302020-03-31
Value000-7100000.0
Percentage of GainsLossesOnExtinguishmentOfDebt0.00.00.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.0-1.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax y:AlleghanyCorporation y:SeniorNotesDueTwentyTwenty0.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value521296226167229-466.19261129376556-890.728349371208210-522.326140
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax65.238.78.523.246.6-99.62.720.362.3108.2-72.679.8108.582.912.6-31.39.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-9.036-63.5-29.7-72.1-37.0-35.8-36.6-37.3-27.3-71.4-14.916-50.8-44.3-4.7-26.6
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-1.712.1-28.1-17.7-31.47.9-58.0-28.3-9.9-4.98.0-4.34.3-24.4-21.00.9-19.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.14.7-2.4-4.1-14.6-7.9-1.6-5.7-6.2-5.3-5.8-3.44.7-20.2-2.7-0.3-1.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment-9000.036000.00.0-2700.0-6008.3-1156.20.0-1220.0-1036.1-737.80.0-60.6177.8-1587.50.00.00.0

us-gaap:OperatingSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value530260289197301-429.297165413583-819.3364355259255-517.6166
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest101.787.9128.1117.7131.492.1157.9128.3109.9104.992.0104.395.7124.4121.099.1119.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax66.334.010.927.361.3-91.74.226.068.5113.5-66.883.2103.8103.115.3-31.010.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments66.334.00.027.361.4-92.40.026.168.9114.40.088.2106.6104.40.00.00.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value503566709.80.39.637333036177.7-1.7
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest9.612.029.241.74.3-0.115.629.38.95.4-4.15.02.1-0.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.24.62.59.72.00.10.45.95.55.93.04.02.2-0.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment6.34.70.09.82.00.10.06.05.66.00.04.32.3-0.7

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value480225223127292-429.587128380553-854.0347348261222-542.0168
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest92.175.898.976.0127.192.1142.499.0101.099.595.999.393.7125.2105.6103.8120.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax60.129.38.417.659.3-91.83.820.062.9107.7-69.679.3101.6103.813.3-32.510.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment4332.42618.60.01433.73519.3-5804.10.01706.75759.110250.00.05604.87410.64580.70.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value10258513053-104.72252871108-186.33760733752-212.3793758244856575736614055795363100343357-94.6882535501613-0.6151817232116
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.87.71.94.210.8-22.41.14.411.821.1-15.213.821.414.93.1-12.72.43.81.73.03.63.94.23.04.83.54.35.94.14.97.42.92.84.7-7.62.12.94.95.85.9-0.37.37.39.58.76.4

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


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
Value2.73.12.71.71.52.82.61.32.6-1.2-7.63.41.4-0.3-5.29.41.919135.4125.320-8.2273.3143-20.6-14.232307.76.36.5
Percentage of IncomeTaxExpenseBenefit2.65.35.25.62.8-2.710.24.63.6-1.14.15.61.9-0.8-9.9-4.45.133.653.111.221.99.236.6-22.744.68.2259.7-25.9-26.750.430.422.218.911.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.40.10.20.30.60.10.20.4-0.2-0.60.80.4-0.1-0.30.60.11.30.90.30.80.41.5-0.72.10.311.0-1.5-1.12.52.30.60.50.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value542233191324-4.5398618-39.6576.345111.8620-20.457-1.922255.94931363.461137-8.42332-1.78783968371254946-45.366-33.626666617-1.51213200.26230.492432.453
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax6.82.91.32.72.85.3-0.213.63.1-7.70.52.60.58.1-1.2-0.11.60.42.12.30.20.82.7-0.72.5-0.26.47.16.55.51.84.23.9-3.7-2.75.45.41.6-0.55.99.30.110.10.217.51.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value242324232218252525232422222120202020202020202222232323222121212121212121159.0774.3774.3294.2684.4523.5670.6960.2160.219
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.10.93.24.53.91.14.04.24.62.05.16.58.61.21.21.41.41.41.31.31.41.71.91.82.01.81.71.71.71.61.81.81.81.81.81.30.91.61.91.91.81.50.30.10.1

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value13131313117.81213131213121313121313131313131313109.79.59.59.19.4
Percentage of InterestExpense56.655.255.656.650.042.550.453.354.153.155.458.158.862.761.962.562.963.159.257.758.658.057.146.344.243.643.842.343.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.71.70.51.82.31.70.62.12.32.41.12.93.85.40.80.80.80.91.01.11.11.21.00.80.80.70.70.80.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment13600.013100.00.01200.0925.0243.80.0456.7377.8337.80.052.4145.6421.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10101010111012121111119.39.28.06.76.66.86.86.66.86.96.99.39.79.79.71012121212121212
Percentage of InterestExpense43.344.644.543.350.057.249.646.745.846.744.541.941.337.232.931.732.432.532.632.933.834.041.142.741.542.042.753.855.656.456.757.656.957.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.31.40.41.42.32.20.61.91.92.10.92.12.73.20.40.40.40.40.50.40.40.50.70.80.70.80.80.90.91.00.91.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments1.31.40.01.42.32.30.01.91.92.20.02.22.83.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.73.84.13.34.33.85.95.24.74.34.42.62.31.3
Percentage of InterestExpense15.416.016.914.219.420.723.120.218.718.317.811.710.36.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.50.20.50.90.80.30.80.80.80.40.60.70.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.50.50.00.50.90.80.00.80.80.90.00.60.70.5

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


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
Value6.76.86.76.86.86.76.86.86.86.76.66.76.96.76.76.66.86.8
Percentage of InterestExpense27.928.627.629.230.636.526.626.527.128.526.730.231.031.132.931.732.432.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.90.30.91.41.40.31.11.11.30.51.52.02.70.40.40.40.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment60.479.10.076.481.990.50.090.7103.0124.10.0108.1146.8117.50.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value3610.03610281727202819281725162516
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.51.31.41.45.83.61.23.34.83.82.33.97.56.71.51.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value403230159126177-361.2183190295440-712.1284295171153-314.157101149691557715415696182125139186148204205113113196-92.61251095603719157137366658
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.430.06.017.536.0-77.21.414.248.985.6-58.065.086.168.29.2-18.86.69.74.89.74.910.411.58.114.010.810.713.811.515.915.19.59.516.0-7.510.28.953.413.48.26.928.816.114.626.423.1

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value403230126177-361.21890295440284295171
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.430.017.536.0-77.214.248.985.665.086.168.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value403229164126177-364.23190295440-712.1284295170153-323.1101149691557715415396182125139186149204205113113196-92.912510956038171571373666
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.429.96.217.536.0-77.81.414.248.985.6-58.065.086.167.79.2-19.46.69.74.89.64.910.411.48.114.010.810.713.811.515.915.19.59.516.0-7.510.28.953.413.67.76.828.716.114.626.4

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
Value126153130129118111136147142123122127126124129104101115106120106104104118103113116118114110131115100118789090532622283131293231
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 RevenueFromContractWithCustomerExcludingAssessedTax15.920.04.917.924.123.95.923.223.623.910.029.036.849.37.76.36.57.57.37.56.87.17.79.97.99.89.08.78.88.69.69.78.49.76.37.47.45.19.59.513.012.713.511.813.012.5

us-gaap:NetInvestmentIncome us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-9.730136.63.30.52.01.53.53.84.54.14.03.85.61.73.52.94.04.8-0.22.62.75.31.71.4119.24.3
Percentage of NetInvestmentIncome-7.619.89.95.12.80.41.51.02.53.13.73.23.23.14.31.63.42.53.84.1-0.22.32.34.51.51.38.88.04.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.24.00.50.90.70.10.10.20.60.70.40.91.21.50.30.10.20.20.30.4-0.00.20.20.40.10.10.80.80.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment-9700.030400.00.0600.0275.015.60.050.097.2102.70.016.744.4118.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value136123118122115111134146139119118123122120122101981121061181051021001131031101141131121091191069693
Percentage of NetInvestmentIncome107.680.290.194.997.299.698.599.097.596.996.396.896.996.995.296.996.497.1100.598.498.498.096.296.0100.297.797.795.598.598.791.392.095.778.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.116.04.417.023.423.85.922.923.023.29.628.135.747.87.46.16.37.37.37.46.67.07.49.57.99.68.88.48.78.58.88.98.07.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments17.116.00.017.023.524.00.023.023.223.40.029.836.648.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.10.00.01.82.91.20.91.31.10.81.41.6
Percentage of NetInvestmentIncome0.10.00.01.62.10.80.61.10.90.61.11.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.40.10.20.10.30.10.20.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.00.00.00.40.00.20.20.30.00.20.40.7

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value13612311712211510913114513811711812212111812210198112
Percentage of NetInvestmentIncome107.680.290.194.997.298.096.498.296.995.896.896.295.995.495.296.996.497.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.116.04.417.023.423.45.722.722.922.99.727.935.347.17.46.16.37.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment1230.61431.40.01378.71390.41482.40.01934.72095.52183.30.01975.82576.62077.20.00.00.00.0

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-2.2492.4619.1761214-13.73310-10.3433.175-0.885-14.949-1.53-10.5235.14.267.3689.9625.049-26.385-3.0411.63220-6.493-0.3862.888-10.755-20.025-26.0735.8050.432-16.2076.787-16.5-9.966-12.71811-14.883.213
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.30.31.73.0-2.90.5-1.60.5-0.2-1.2-0.3-3.12.00.30.40.60.3-1.8-0.20.11.4-0.5-0.00.2-0.9-1.5-1.90.40.0-1.20.6-1.4-0.8-1.00.9-1.20.3

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-2.2492.4611214-13.733-10.3433.175-0.885-1.53-10.5235.1
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.30.31.73.0-2.9-1.60.5-0.2-0.3-3.12.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.0

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
Value1784160416041556139414441434138913561297130612251236120712621239124312091239125312611221108910491074101711211136109810531055103910681075111010921095434192190183180193190188194
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 RevenueFromContractWithCustomerExcludingAssessedTax222.9209.060.2215.1283.1308.762.4217.7224.5252.3106.4279.5360.9480.075.574.380.178.985.177.679.782.680.588.282.687.986.184.085.181.977.587.489.387.989.588.988.841.468.381.883.972.983.376.275.377.4

us-gaap:PremiumsEarnedNet us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1784160416041556139414441434139013561297130612251237120712621239124312091239125312611221108910491074101711211136109810541056103910681075
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax222.9209.060.2215.1283.1308.762.4217.7224.5252.3106.4279.6360.9480.075.574.380.078.985.277.679.782.680.588.282.687.986.184.085.181.977.587.489.387.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments223.0209.00.0215.4283.8310.80.0218.7225.9254.20.0296.2370.7486.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PremiumsEarnedNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:InsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value391374370349323311309292281268270263255247290286286283282284281282287282275270275277267260258247233
Percentage of PremiumsEarnedNet21.923.423.122.523.221.621.621.020.720.720.721.520.720.523.023.123.023.422.822.722.323.126.426.925.626.624.524.424.324.724.523.821.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax48.948.813.948.365.766.513.545.846.552.122.060.274.698.417.417.218.418.519.417.617.819.121.223.721.223.321.120.520.720.319.020.819.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:InsuranceSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, y:ReinsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value13931229123312071071113311251097107410291036961981960971953957926956969980939802766799746846859831793797792834
Percentage of PremiumsEarnedNet78.176.676.977.576.878.478.479.079.379.379.378.579.379.577.076.977.076.677.277.377.776.973.673.174.473.475.575.675.775.375.576.278.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax174.1160.246.3166.8217.4242.248.9171.9178.0200.284.4219.4286.3381.658.257.261.660.465.760.062.063.559.364.561.564.565.063.664.461.758.566.769.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value178416041604155613941444143413901356129713061225123712071262123912431209
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax222.9209.060.2215.1283.1308.762.4217.7224.5252.3106.4279.6360.9480.075.574.380.078.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment16075.718660.50.017493.316806.019518.90.018533.320545.524024.10.019764.526319.121189.50.00.00.00.0

us-gaap:PremiumsEarnedNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:OperatingSegments, y:InsuranceSegment, y:CapSpecialtyIncorporated


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value949193898281898378757873716668666462616158555552494748484542
Percentage of PremiumsEarnedNet5.35.75.85.75.95.76.26.05.85.86.06.05.75.55.45.35.25.15.04.94.64.55.15.04.64.74.34.24.24.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.911.93.512.316.717.53.913.113.014.76.416.720.726.54.14.04.14.14.23.83.73.74.14.43.84.13.73.63.53.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:InsuranceSegment y:CapSpecialtyIncorporated0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, y:InsuranceSegment, y:RsuiGroupIncorporated


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value296283277260241229220208202192191190184180181179178182187186188192202202201203207210205204203197187
Percentage of PremiumsEarnedNet16.617.717.316.717.315.915.415.014.914.814.615.614.915.014.414.414.315.115.114.914.915.718.619.318.720.018.518.618.719.419.319.017.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax37.036.910.436.049.049.09.632.733.537.415.643.553.971.910.910.711.511.912.911.611.913.015.017.015.517.516.015.615.915.915.016.615.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:InsuranceSegment y:RsuiGroupIncorporated0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Premiums
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value858878832742811784770771720752635689685658642686639646654689685574559562531569581573558556546582
Percentage of PremiumsEarnedNet53.554.853.553.256.254.755.456.955.557.651.855.756.752.151.855.252.952.252.254.756.152.753.452.452.250.751.152.253.052.752.654.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax111.833.0115.0150.7173.534.1120.7127.8140.161.3144.9201.1272.339.438.544.241.744.440.643.646.442.547.143.345.943.743.044.443.440.846.048.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegment y:CasualtyAndOtherReinsuranceSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Premiums
Period End2021-06-302020-06-30
Value954742
Percentage of PremiumsEarnedNet53.553.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax119.2150.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegment y:CasualtyAndSpecialtyReinsuranceSegments0.00.0

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value438371354374328321341327303308283326292275313310270286310314290253228207236215277278258234241246251
Percentage of PremiumsEarnedNet24.623.122.124.123.622.323.823.522.423.821.726.623.622.824.925.121.723.725.025.123.020.720.919.722.021.224.724.523.522.222.823.723.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax54.848.413.351.866.768.714.851.250.260.123.174.585.2109.318.818.617.418.721.319.518.317.116.917.418.218.621.320.620.018.217.720.721.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegment y:PropertyReinsuranceSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
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
Value419238174137176-361.47236101304447-704.391289298171158-309.947102149691587715415697183125139186149204205113113196-92.612125
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.431.06.519.035.8-77.31.615.950.587.1-57.466.087.168.09.5-18.66.69.74.89.84.910.511.68.214.110.810.713.811.615.915.19.59.516.0-7.510.2

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
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
Value800767266372349246723006386035141227438342251167016671553153214551614158214781352118913001157130213511291128613621189119612231240122912341048282232219248232250250251
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Revenue
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
Value0.10.13.01.11.23.22.33.03.63.710249.03.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.10.20.20.70.10.50.60.70.95.62.61.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.10.20.20.70.10.50.60.70.95.62.61.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments


Revenue
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
Value800767833722491464570635600510600413333248
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.031.399.999.899.324.899.599.499.349.094.497.498.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.031.399.999.899.324.899.599.499.349.094.497.498.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Revenue
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
Value789759823713483457562628593505595407329242
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.698.930.998.698.197.724.498.498.398.248.593.096.096.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax98.698.930.998.698.197.724.498.498.398.248.593.096.096.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Revenue
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
Value118.6108.98.37.47.57.56.65.45.36.24.75.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.10.41.21.71.60.31.21.11.10.41.41.42.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.41.10.41.21.71.60.31.21.11.10.41.41.42.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment, us-gaap:CorporateAndOther


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302018-09-302018-06-302018-03-31
Value0.00.00.00.10.10.3-0.40.00.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.00.00.00.00.0-0.10.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment us-gaap:CorporateAndOther0.00.00.0100.0100.0100.0100.00.0100.0

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment, y:IndustrialSegment


Revenue
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
Value407404373324280242240286318260325224221145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.952.714.044.857.051.810.444.952.750.626.551.164.757.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.952.714.044.857.051.810.444.952.750.626.551.164.757.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment y:IndustrialSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment, y:NonIndustrialSegment


Revenue
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
Value38235444938920221432234127524426918310797
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.746.216.953.841.145.914.053.445.647.622.041.931.238.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.746.216.953.841.145.914.053.445.647.622.041.931.238.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment y:NonIndustrialSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value29282653266325222227148223002159225823211227217718971584167016671553153214551614158214781352118913001157130213511291128613621189119612231240122912341048282232219248232250250251
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax365.9345.6100.0348.6452.1317.0100.0338.3374.0451.5100.0496.7553.7629.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value3049129385289272845227620257522693126490263562579325344257952508525097253842571424529239392375624116238142305522846234342392823560234892392923841234942336123241228902280422807227572241821775647864126615652964316192
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
Value102691012489499799
Percentage of Assets35.537.635.338.6
Percentage of Assets35.537.635.338.6
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1144101486986691938749449547936340852256258318001800170013001400130013009001000700700700800900600
Percentage of Assets3.83.53.03.03.31.51.81.91.81.41.62.02.22.37.17.06.95.45.95.45.53.94.43.02.93.03.43.82.5
Percentage of Assets3.83.53.03.03.31.51.81.91.81.41.62.02.22.37.17.06.95.45.95.45.53.94.43.02.93.03.43.82.5
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2934628371280572758526701253652643725995258762542924936252732452324514
Percentage of Assets96.296.597.097.096.798.598.298.198.298.698.498.097.897.7
Percentage of Assets96.296.597.097.096.798.598.298.198.298.698.498.097.897.7
Percentage of Assets us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2648250925922440227321312048191418801758
Percentage of Assets8.78.59.08.68.28.37.67.27.16.8
Percentage of Assets8.78.59.08.68.28.37.67.27.16.8
Percentage of Assets us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, y:InsuranceSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value79037477749373677072641472307166712268716701705668376692690070006800680067006600650064006300630065006400640064006500
Percentage of Assets25.925.425.925.925.624.926.827.127.026.626.427.427.326.727.227.227.728.428.227.427.327.827.626.927.227.227.226.727.3
Percentage of Assets25.925.425.925.925.624.926.827.127.026.626.427.427.326.727.227.227.728.428.227.427.327.827.626.927.227.227.226.727.3
Percentage of Assets us-gaap:OperatingSegments y:InsuranceSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, y:ReinsuranceSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1879418384179711777717356168191715816914168741679916502167401635616515167001690016000158001570016200160001580015600164001670016500163001660016700
Percentage of Assets61.662.662.162.562.865.363.763.864.065.165.164.965.265.865.865.765.266.066.167.267.268.568.370.069.870.069.469.470.0
Percentage of Assets61.662.662.162.562.865.363.763.864.065.165.164.965.265.865.865.765.266.066.167.267.268.568.370.069.870.069.469.470.0
Percentage of Assets us-gaap:OperatingSegments y:ReinsuranceSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2669825862254642514524428232332438824080239962367123204237962319423208
Percentage of Assets87.688.088.088.488.490.290.690.991.091.891.692.392.592.5
Percentage of Assets87.688.088.088.488.490.290.690.991.091.891.692.392.592.5
Percentage of Assets us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value2110820456199371961918936176871795017481174941738017482170621654616586167631740915993156801574115934158231525715265159731627715922160071651416434163561641316502163911617916404161761613815592355235643586347835223475
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 Assets69.269.668.969.068.668.766.766.066.467.469.066.166.066.166.067.765.265.566.366.166.466.266.868.268.067.668.169.068.969.670.371.071.670.971.971.172.071.654.855.654.253.354.856.1

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value1279114210871179
Percentage of Liabilities6.46.46.27.0
Percentage of Assets4.44.24.34.6
Percentage of Assets srt:ParentCompany12.511.312.112.0

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
Value3049129385289272845227620257522693126490263562579325344257952508525097253842571424529239392375624116238142305522846234342392823560234892392923841234942336123241228902280422807227572241821775647864126615652964316192
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
Value102691012489499799
Percentage of LiabilitiesAndStockholdersEquity35.537.635.338.6
Percentage of Assets35.537.635.338.6
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value9142869587558596845678578776882886858236769285958404837385148201843581847939810579177771755474527641763074737405739871286923671664986625640365816280618329252847302930512908271726462784
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.029.630.330.230.630.532.633.333.031.930.433.333.533.433.531.934.434.233.433.633.233.733.131.831.932.431.830.931.030.329.628.928.429.128.128.928.028.445.244.445.846.745.243.90.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value8755877676928514
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets30.332.630.433.5
Percentage of Assets srt:ParentCompany85.386.786.086.9

us-gaap:StockholdersEquity us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-114.7-156.2-340.8-344.8-283.7-296.0-540.5-562.4-612.2-668.8-606.5-521.1-472.8-433.33003002000.0-100.0-100.0-100.0-200.0-200.0-300.0-400.0-400.0-400.0-200.0-100.0
Percentage of StockholdersEquity-1.3-1.8-3.9-4.0-3.4-3.8-6.2-6.4-7.0-8.1-7.9-6.1-5.6-5.23.53.72.40.0-1.3-1.2-1.3-2.6-2.6-4.0-5.2-5.2-5.4-2.7-1.4
Percentage of Assets-0.4-0.5-1.2-1.2-1.0-1.1-2.0-2.1-2.3-2.6-2.4-2.0-1.9-1.71.21.20.80.0-0.4-0.4-0.4-0.9-0.9-1.3-1.7-1.7-1.7-0.8-0.4
Percentage of Assets us-gaap:CorporateNonSegment-10.0-15.4-39.2-39.8-30.8-76.4-109.3-113.5-127.6-183.8-148.4-99.8-84.0-74.316.716.711.80.0-7.1-7.7-7.7-22.2-20.0-42.9-57.1-57.1-50.0-22.2-16.7

us-gaap:OperatingSegments


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
Value92568852909689418739815393179391929889058299911688778806
Percentage of StockholdersEquity101.3101.8103.9104.0103.4103.8106.2106.4107.0108.1107.9106.1105.6105.2
Percentage of Assets30.430.131.431.431.631.734.635.535.334.532.735.335.435.1
Percentage of Assets us-gaap:OperatingSegments31.531.232.432.432.732.135.236.135.935.033.336.136.235.9

us-gaap:StockholdersEquity us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value113510771109105910131000900901879862
Percentage of StockholdersEquity12.412.412.712.312.012.710.310.210.110.5
Percentage of Assets3.73.73.83.73.73.93.33.43.33.3
Percentage of Assets us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment42.943.042.843.444.646.944.047.146.849.0

us-gaap:OperatingSegments, y:InsuranceSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value26292522261025712572237731733141309629522696309228912854300028002800290028002800270027002600260028002800280028002800
Percentage of StockholdersEquity28.829.029.829.930.430.336.235.635.635.835.136.034.434.135.234.133.235.435.334.534.134.734.434.936.636.737.537.837.8
Percentage of Assets8.68.69.09.09.39.211.811.911.711.410.612.011.511.411.810.911.412.111.811.611.311.711.411.111.711.911.911.711.7
Percentage of Assets us-gaap:OperatingSegments y:InsuranceSegment33.333.734.834.936.437.143.943.843.543.040.243.842.342.643.540.041.242.641.842.441.542.241.341.343.143.843.843.843.1

us-gaap:OperatingSegments, y:ReinsuranceSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value54915251537753095154477452435347532150914723516752085155520051005400530052005400530053005200520052005200510048004700
Percentage of StockholdersEquity60.160.461.461.861.060.859.760.661.361.861.460.162.061.661.162.264.064.865.566.666.968.268.869.868.068.168.264.863.5
Percentage of Assets18.017.918.618.718.718.519.520.220.219.718.620.020.820.520.519.822.022.121.922.422.323.022.822.221.722.121.720.119.7
Percentage of Assets us-gaap:OperatingSegments y:ReinsuranceSegment29.228.629.929.929.728.430.631.631.530.328.630.931.831.231.130.233.833.533.133.333.133.533.331.731.131.531.328.928.1

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


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
Value81207774798778817726715284168489841880437419826081008009
Percentage of StockholdersEquity88.889.491.291.791.491.095.996.296.997.796.596.196.495.7
Percentage of Assets26.626.527.627.728.027.831.332.031.931.229.332.032.331.9
Percentage of Assets us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment30.430.131.431.331.630.834.535.335.134.032.034.734.934.5

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value-13.9-14.1-13.1-26.5-27.0-27.4-27.9-14.3-14.6-14.8-15.7-20.5-19.9-20.1-15.5-11.9-12.0-12.1-11.7-11.2-11.2-11.4-11.6-12.9-13.0-12.6
Percentage of StockholdersEquity-0.2-0.2-0.1-0.3-0.3-0.3-0.3-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2
Percentage of Assets-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.0-0.0-0.1-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value41633556451043933321370289126-61.6-90.6-44.2-5.8718539458320232427391324231226362455
Percentage of StockholdersEquity4.63.96.55.95.20.43.74.23.31.5-0.8-1.1-0.5-0.18.46.65.43.92.95.34.94.23.13.04.76.1
Percentage of Assets1.41.12.01.81.60.11.21.41.10.5-0.2-0.4-0.2-0.02.82.11.91.31.01.81.61.41.01.01.51.9
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value303224452375291-129.343171223151-14.157-202.003-220.8-172.3-123.66184383502021093312982291161162523531862501551709487328
Percentage of StockholdersEquity3.32.65.24.43.5-1.62.02.51.7-0.2-2.6-2.6-2.1-1.57.35.34.22.51.44.13.83.01.51.63.34.72.73.95.35.93.53.311.8
Percentage of Assets1.00.81.61.31.1-0.50.60.80.6-0.1-0.8-0.9-0.7-0.52.41.71.40.80.51.41.31.00.50.51.11.50.81.12.42.61.50.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value-99.2-96.9-99.4-108.6-120.7-135.5-121.8-132.8-122.4-125.6-124.7-109.7-108.2-97.7-84.6-88.8-96.2-106.1-111.2-84.8-81.8-83.4-104.0-97.5-97.1-89.2
Percentage of StockholdersEquity-1.1-1.1-1.1-1.3-1.4-1.7-1.4-1.5-1.4-1.5-1.6-1.3-1.3-1.2-1.0-1.1-1.1-1.3-1.4-1.0-1.0-1.1-1.4-1.3-1.3-1.2
Percentage of Assets-0.3-0.3-0.3-0.4-0.4-0.5-0.5-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.3-0.3-0.4-0.4-0.5-0.4-0.3-0.4-0.5-0.4-0.4-0.4
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:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value36123613361336093609361036083608360836083612361236123613361236113611361036133619938928921742
Percentage of StockholdersEquity39.541.641.342.042.745.941.140.941.543.847.042.043.043.242.445.547.848.352.256.532.131.933.928.1
Percentage of Assets11.812.312.512.713.114.013.413.613.714.014.314.014.414.414.215.215.815.415.515.914.514.414.90.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value17171717171717171717171717171717171717179.1189.1189.1188.3498.159
Percentage of StockholdersEquity0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.3
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value6952654863186159603258556435640363136017557762896004570950915014455739993320269119901900175915331458
Percentage of StockholdersEquity76.075.372.271.671.374.573.372.572.773.172.573.271.468.259.863.160.353.548.042.068.065.364.757.952.4
Percentage of Assets22.822.321.821.621.822.723.924.224.023.322.024.423.922.720.121.119.917.014.211.830.729.528.40.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-1743.434-1707.908-1645.93-1565.426-1495.475-1496.554-1455.877-1423.901-1404.627-1393.059-1312.939-1103.835-1057.885-843.497-824.906-812.84-747.784-507.699-213.911-175.818-167.319-99.686-66.325-24.290.0
Percentage of StockholdersEquity-19.1-19.6-18.8-18.2-17.7-19.0-16.6-16.1-16.2-16.9-17.1-12.8-12.6-10.1-9.7-10.2-9.9-6.8-3.1-2.7-5.7-3.4-2.4-0.90.0
Percentage of Assets-5.7-5.8-5.7-5.5-5.4-5.8-5.4-5.4-5.3-5.4-5.2-4.3-4.2-3.4-3.2-3.4-3.3-2.2-0.9-0.8-2.6-1.5-1.10.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value87111977911230165215551179897824778103864662371183870164362459456851050947556364753760560741948149841448157464957140452084908564761038455321857
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 Assets2.94.12.74.36.06.04.43.43.13.04.12.52.52.83.32.72.62.62.52.42.12.22.12.42.72.32.62.51.82.02.11.82.12.52.82.51.82.41.31.41.31.01.20.00.00.00.50.00.0

us-gaap:Cash us-gaap:ConsolidatedEntities

srt:ParentCompany


Cashus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value170.6840.331216.1392.477
Percentage of Cash2.20.10.02.51.00.5
Percentage of Assets0.10.00.00.10.00.0
Percentage of Assets srt:ParentCompany0.20.00.00.20.00.0

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
Value871119779112301652155511798978247781038646838594
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.94.12.74.36.06.04.43.43.13.04.12.53.32.5

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value170.6840.331216.139
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents2.20.10.02.51.0
Percentage of Assets0.10.00.00.10.0
Percentage of Assets srt:ParentCompany0.20.00.00.20.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
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
Value30226926727027220820520620219919519619719812513013011111210910499101959695888682675855353334313122171820201920
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.90.90.91.00.80.80.80.80.80.80.80.80.80.50.50.50.50.50.50.40.40.40.40.40.40.40.40.30.30.30.20.20.10.10.10.10.10.30.30.30.30.30.3

us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidatedEntities

srt:ParentCompany


Property
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.7074.2014.5885.101
Percentage of PropertyPlantAndEquipmentNet1.42.02.34.1
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.10.1

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value62761461461261353052348448145545534634634533433332428428427727114114111111111111199999999998383838282484848
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.12.12.12.22.22.11.91.81.81.81.81.31.41.41.31.31.31.21.21.11.10.60.60.50.50.50.50.40.40.40.40.40.40.40.40.40.40.20.70.7

us-gaap:Goodwill us-gaap:BusinessAcquisition

y:WilbertPlasticServices


Goodwillus-gaap:
Period End2021-05-10
Value13
Percentage of Goodwill0.0
Percentage of Assets0.0
Percentage of Assets y:WilbertPlasticServices0.0

us-gaap:Goodwill us-gaap:StatementBusinessSegments

y:AlleghanyCapitalCorporationSegment


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value557465397277
Percentage of Goodwill90.788.987.382.7
Percentage of Assets1.91.71.61.1
Percentage of Assets y:AlleghanyCapitalCorporationSegment0.00.00.00.0

y:InsuranceSegment


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value48494949494949494948484848
Percentage of Goodwill7.89.410.814.617.234.743.849.158.758.358.3100.0100.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.20.20.7
Percentage of Assets y:InsuranceSegment0.00.00.00.00.00.00.00.80.90.90.90.90.0

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:TradeNames, y:AlleghanyCapitalCorporationSegment


Indefinite
Period End2020-12-312019-12-312018-12-31
Value215171176
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0
Percentage of Assets0.70.60.7
Percentage of Assets us-gaap:TradeNames y:AlleghanyCapitalCorporationSegment0.00.00.0

y:StateInsuranceLicenses, y:InsuranceSegment


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value252525252525
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill11.614.714.20.00.00.0
Percentage of Assets0.10.10.10.10.10.1
Percentage of Assets y:StateInsuranceLicenses y:InsuranceSegment0.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value8017747877998086886855885875495534654634674594644653743783583462092121371361351331311301291271251161171281652753829094
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.62.62.72.82.92.72.52.22.22.12.21.81.81.91.81.81.91.61.61.51.50.90.90.60.60.60.60.50.50.50.50.50.50.50.60.71.21.81.41.5

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:StatementBusinessSegments

y:AlleghanyCapitalCorporationSegment


Intangible
Period End2020-12-312019-12-312018-12-312017-12-31
Value646542410325
Percentage of IntangibleAssetsNetExcludingGoodwill82.079.174.270.9
Percentage of Assets2.22.01.61.3
Percentage of Assets y:AlleghanyCapitalCorporationSegment0.00.00.00.0

y:InsuranceSegment


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value63656869727579829088899090
Percentage of IntangibleAssetsNetExcludingGoodwill8.09.512.415.119.335.759.364.570.353.332.423.6100.0
Percentage of Assets0.20.20.30.30.30.30.30.40.40.40.40.41.4
Percentage of Assets y:InsuranceSegment0.00.00.00.00.00.00.01.31.61.71.71.70.0

y:ReinsuranceSegment


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-31
Value78787464544840313776185292
Percentage of IntangibleAssetsNetExcludingGoodwill10.011.413.414.114.522.830.224.429.246.367.376.4
Percentage of Assets0.30.30.30.30.20.20.20.10.20.30.81.3
Percentage of Assets y:ReinsuranceSegment0.00.00.00.00.00.00.00.20.20.51.11.8

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass, us-gaap:StatementBusinessSegments

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:CustomerRelationships, y:AlleghanyCapitalCorporationSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value285248187112
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0
Percentage of Assets1.00.90.70.4
Percentage of Assets us-gaap:CustomerRelationships y:AlleghanyCapitalCorporationSegment0.00.00.00.0

us-gaap:LeasesAcquiredInPlaceMarketAdjustment, y:ReinsuranceSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value-2.1-4.2-8.6-11.4-14.3-17.2-20.1
Percentage of FiniteLivedIntangibleAssetsNet-0.7-1.7-4.6-10.10.00.00.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.1-0.1-0.1
Percentage of Assets us-gaap:LeasesAcquiredInPlaceMarketAdjustment y:ReinsuranceSegment0.00.00.00.00.00.00.0

us-gaap:LicensingAgreements, y:AlleghanyCapitalCorporationSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value1191194552
Percentage of FiniteLivedIntangibleAssetsNet41.748.024.346.2
Percentage of Assets0.40.40.20.2
Percentage of Assets us-gaap:LicensingAgreements y:AlleghanyCapitalCorporationSegment0.00.00.00.0

us-gaap:OtherIntangibleAssets, y:AlleghanyCapitalCorporationSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value262.80.48.7
Percentage of FiniteLivedIntangibleAssetsNet9.11.10.27.7
Percentage of Assets0.10.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets y:AlleghanyCapitalCorporationSegment0.00.00.00.0

us-gaap:OtherIntangibleAssets, y:ReinsuranceSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.94.24.64.9
Percentage of FiniteLivedIntangibleAssetsNet1.41.72.54.3
Percentage of Assets0.00.00.00.0
Percentage of Assets us-gaap:OtherIntangibleAssets y:ReinsuranceSegment0.00.00.00.0

y:AgencyRelationships, y:InsuranceSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value2.24.27.07.38.18.99.7101613141414
Percentage of FiniteLivedIntangibleAssetsNet0.81.73.76.50.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.10.10.10.10.2
Percentage of Assets y:AgencyRelationships y:InsuranceSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

y:LossAndLAEReservesAdjustment, y:ReinsuranceSegment


Finite
Period End2020-12-312019-12-31
Value-10.2-13.1
Percentage of FiniteLivedIntangibleAssetsNet-3.6-5.3
Percentage of Assets-0.0-0.0
Percentage of Assets y:LossAndLAEReservesAdjustment y:ReinsuranceSegment0.00.0

y:RenewalRights, y:InsuranceSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.30.61.00.10.1
Percentage of FiniteLivedIntangibleAssetsNet0.10.20.50.10.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets y:RenewalRights y:InsuranceSegment0.00.00.00.00.0

y:RenewalRights, y:ReinsuranceSegment


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1722252226
Percentage of FiniteLivedIntangibleAssetsNet6.29.013.619.70.0
Percentage of Assets0.10.10.10.10.1
Percentage of Assets y:RenewalRights y:ReinsuranceSegment0.00.00.00.00.0

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302011-12-31
Value140112091008793663353245227212248357139
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.84.54.03.12.81.51.01.00.91.11.62.1

us-gaap:IntangibleAssetsNetIncludingGoodwill us-gaap:StatementBusinessSegments

y:AlleghanyCapitalCorporationSegment


Intangible
Period End2020-12-312019-12-312018-12-312017-12-31
Value12031007807602
Percentage of IntangibleAssetsNetIncludingGoodwill85.883.380.175.9
Percentage of Assets4.23.73.22.4
Percentage of Assets y:AlleghanyCapitalCorporationSegment0.00.00.00.0

y:InsuranceSegment


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302011-12-31
Value111114117118121124128131139136137139
Percentage of IntangibleAssetsNetIncludingGoodwill7.99.511.714.918.435.352.257.865.755.038.4100.0
Percentage of Assets0.40.40.50.50.50.50.50.60.60.60.62.1
Percentage of Assets y:InsuranceSegment0.00.00.00.00.00.00.02.12.52.62.60.0

y:ReinsuranceSegment


Intangible
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value8787837354
Percentage of IntangibleAssetsNetIncludingGoodwill6.27.28.29.28.3
Percentage of Assets0.30.30.30.30.2
Percentage of Assets y:ReinsuranceSegment0.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value227209212216216
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.80.80.8

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3580331227182163143917102505209222922523357250284714
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.711.39.47.65.26.69.37.98.79.814.119.518.8

us-gaap:EquitySecuritiesFvNi us-gaap:ConsolidatedEntities

srt:ParentCompany


Equity
Period End2020-12-312019-12-312018-12-31
Value5714.04264
Percentage of EquitySecuritiesFvNi21.00.21.8
Percentage of Assets2.00.00.3
Percentage of Assets srt:ParentCompany5.60.00.7

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel1


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3573330527112154143017022498208422852515356350164704
Percentage of EquitySecuritiesFvNi99.899.899.799.699.499.699.799.699.799.799.899.899.8
Percentage of Assets11.711.29.47.65.26.69.37.98.79.814.119.418.8
Percentage of Assets us-gaap:FairValueInputsLevel10.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.45.16.56.66.65.65.43.33.33.53.53.53.6
Percentage of EquitySecuritiesFvNi0.20.20.20.30.50.30.20.20.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel20.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.31.31.32.02.02.02.04.14.14.65.48.46.3
Percentage of EquitySecuritiesFvNi0.00.00.00.10.10.10.10.20.20.20.20.20.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel30.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentType

us-gaap:FairValueInputsLevel1, us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3573330527112154143017022498208422852515356350164704
Percentage of EquitySecuritiesFvNi99.899.899.799.699.499.699.799.699.799.799.899.899.8
Percentage of Assets11.711.29.47.65.26.69.37.98.79.814.119.418.8
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2.12.13.53.53.53.53.33.33.33.53.53.53.6
Percentage of EquitySecuritiesFvNi0.10.10.10.20.20.20.10.20.10.10.10.10.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:PreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.33.03.03.13.12.12.1
Percentage of EquitySecuritiesFvNi0.10.10.10.10.20.10.1
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:PreferredStock0.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:PreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.31.31.32.02.02.02.04.14.14.65.48.46.3
Percentage of EquitySecuritiesFvNi0.00.00.00.10.10.10.10.20.20.20.20.20.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:InvestmentType

us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3575330727142158143417062501208822882518356750204707
Percentage of EquitySecuritiesFvNi99.999.999.899.899.699.899.899.899.899.899.899.899.9
Percentage of Assets11.711.39.47.65.26.69.37.98.79.814.119.518.8
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.64.34.35.15.14.14.14.14.14.65.48.46.3
Percentage of EquitySecuritiesFvNi0.10.10.20.20.40.20.20.20.20.20.20.20.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value17101556155914391295134011831266127211611012835752712659668635504522702746103087555047059151456449446340840039636341436033914911510311718997101
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 Assets5.65.35.45.14.75.24.44.84.84.54.03.23.02.82.62.62.62.12.22.93.14.53.82.32.02.52.22.42.12.01.71.71.71.61.81.61.50.71.81.61.82.91.51.6

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value60578.3035.518
Percentage of OtherAssets3.94.90.80.8
Percentage of Assets0.20.20.00.0
Percentage of Assets srt:ParentCompany0.60.60.10.1

Accrued Income Taxes Current

us-gaap:AccruedIncomeTaxesCurrent

us-gaap:AccruedIncomeTaxesCurrent


Accrued
Period End2021-06-302021-03-312020-09-302011-12-312011-03-312010-12-312009-12-31
Value6.1668.7155.773162.5573.223.827
Percentage of AccruedIncomeTaxesCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.30.00.10.1

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
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
Value206320802135204120171514175116951714167616691581156915401484148614871471147613831383138313901759176217641767207917851790179417981803180718111815181914232992992982982980.0
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets6.87.17.47.27.35.96.56.46.56.56.66.16.36.15.85.86.16.16.25.75.86.06.17.57.47.57.58.77.57.67.77.77.97.97.98.08.16.54.64.74.54.64.60.0

us-gaap:LongTermDebt dei:LegalEntity, us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

y:IntegratedProjectServicesLLC, us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value39403637435140415110161513
Percentage of LongTermDebt1.92.01.71.82.23.42.32.53.00.61.01.00.9
Percentage of Assets0.10.10.10.10.20.20.10.20.20.00.10.10.1
Percentage of Assets y:IntegratedProjectServicesLLC us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

y:JazwaresLimitedLiabilityCompany, us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value213201253180161161177483542434141
Percentage of LongTermDebt10.39.711.88.88.010.710.12.92.12.62.72.62.7
Percentage of Assets0.70.70.90.60.60.60.70.20.10.20.20.20.2
Percentage of Assets y:JazwaresLimitedLiabilityCompany us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

y:KentuckyTrailer, us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value5767646165745974646021198.9
Percentage of LongTermDebt2.83.23.03.03.24.93.44.43.73.61.41.20.6
Percentage of Assets0.20.20.20.20.20.30.20.30.20.20.10.10.0
Percentage of Assets y:KentuckyTrailer us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

y:PiedmontManufacturingGroupLLC, us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
Period End2021-06-30
Value32
Percentage of LongTermDebt1.6
Percentage of Assets0.1
Percentage of Assets y:PiedmontManufacturingGroupLLC us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.0

y:PrecisionCuttingTechnologiesInc, us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value262632343537323233
Percentage of LongTermDebt1.31.31.51.71.82.41.91.91.9
Percentage of Assets0.10.10.10.10.10.10.10.10.1
Percentage of Assets y:PrecisionCuttingTechnologiesInc us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.00.00.00.00.00.00.00.00.0

y:WWSCHoldingsLLC, us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value449298755810557801131311029578
Percentage of LongTermDebt2.14.44.63.72.97.03.34.76.67.86.56.15.1
Percentage of Assets0.10.30.30.30.20.40.20.30.40.50.40.40.3
Percentage of Assets y:WWSCHoldingsLLC us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.00.00.00.00.00.00.00.00.00.00.00.00.0

y:WilbertFuneralServicesInc, us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value7072727374
Percentage of LongTermDebt3.43.53.43.63.7
Percentage of Assets0.20.20.30.30.3
Percentage of Assets y:WilbertFuneralServicesInc us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment0.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-312017-12-31
Value1190994993992
Percentage of LongTermDebt55.756.859.566.8
Percentage of Assets4.13.73.93.9
Percentage of Assets srt:ParentCompany11.69.811.110.1

us-gaap:LongTermDebt us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Long
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
Value484501556462438429367311330292284197185156
Percentage of LongTermDebt23.524.126.122.721.728.421.018.419.317.417.012.511.810.2
Percentage of Assets1.61.71.91.61.61.71.41.21.31.11.10.80.70.6
Percentage of Assets us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment18.320.021.519.019.320.217.916.317.616.60.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-31
Value885.84143
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0
Percentage of Assets0.30.00.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value255241240244243
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.90.90.9

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value344
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets1.2

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value88
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.3

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value9142869587558596845678578776882886858236769285958404837385148201843581847939810579177771755474527641763074737405739871286923671664986625640365816280618329252847302930512908271726462784
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets30.029.630.330.230.630.532.633.333.031.930.433.333.533.433.531.934.434.233.433.633.233.733.131.831.932.431.830.931.030.329.628.928.429.128.128.928.028.445.244.445.846.745.243.90.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value8755877676928514
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets30.332.630.433.5
Percentage of Assets srt:ParentCompany85.386.786.086.9

us-gaap:StockholdersEquity us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-114.7-156.2-340.8-344.8-283.7-296.0-540.5-562.4-612.2-668.8-606.5-521.1-472.8-433.33003002000.0-100.0-100.0-100.0-200.0-200.0-300.0-400.0-400.0-400.0-200.0-100.0
Percentage of StockholdersEquity-1.3-1.8-3.9-4.0-3.4-3.8-6.2-6.4-7.0-8.1-7.9-6.1-5.6-5.23.53.72.40.0-1.3-1.2-1.3-2.6-2.6-4.0-5.2-5.2-5.4-2.7-1.4
Percentage of Assets-0.4-0.5-1.2-1.2-1.0-1.1-2.0-2.1-2.3-2.6-2.4-2.0-1.9-1.71.21.20.80.0-0.4-0.4-0.4-0.9-0.9-1.3-1.7-1.7-1.7-0.8-0.4
Percentage of Assets us-gaap:CorporateNonSegment-10.0-15.4-39.2-39.8-30.8-76.4-109.3-113.5-127.6-183.8-148.4-99.8-84.0-74.316.716.711.80.0-7.1-7.7-7.7-22.2-20.0-42.9-57.1-57.1-50.0-22.2-16.7

us-gaap:OperatingSegments


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
Value92568852909689418739815393179391929889058299911688778806
Percentage of StockholdersEquity101.3101.8103.9104.0103.4103.8106.2106.4107.0108.1107.9106.1105.6105.2
Percentage of Assets30.430.131.431.431.631.734.635.535.334.532.735.335.435.1
Percentage of Assets us-gaap:OperatingSegments31.531.232.432.432.732.135.236.135.935.033.336.136.235.9

us-gaap:StockholdersEquity us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value113510771109105910131000900901879862
Percentage of StockholdersEquity12.412.412.712.312.012.710.310.210.110.5
Percentage of Assets3.73.73.83.73.73.93.33.43.33.3
Percentage of Assets us-gaap:OperatingSegments y:AlleghanyCapitalCorporationSegment42.943.042.843.444.646.944.047.146.849.0

us-gaap:OperatingSegments, y:InsuranceSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value26292522261025712572237731733141309629522696309228912854300028002800290028002800270027002600260028002800280028002800
Percentage of StockholdersEquity28.829.029.829.930.430.336.235.635.635.835.136.034.434.135.234.133.235.435.334.534.134.734.434.936.636.737.537.837.8
Percentage of Assets8.68.69.09.09.39.211.811.911.711.410.612.011.511.411.810.911.412.111.811.611.311.711.411.111.711.911.911.711.7
Percentage of Assets us-gaap:OperatingSegments y:InsuranceSegment33.333.734.834.936.437.143.943.843.543.040.243.842.342.643.540.041.242.641.842.441.542.241.341.343.143.843.843.843.1

us-gaap:OperatingSegments, y:ReinsuranceSegment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value54915251537753095154477452435347532150914723516752085155520051005400530052005400530053005200520052005200510048004700
Percentage of StockholdersEquity60.160.461.461.861.060.859.760.661.361.861.460.162.061.661.162.264.064.865.566.666.968.268.869.868.068.168.264.863.5
Percentage of Assets18.017.918.618.718.718.519.520.220.219.718.620.020.820.520.519.822.022.121.922.422.323.022.822.221.722.121.720.119.7
Percentage of Assets us-gaap:OperatingSegments y:ReinsuranceSegment29.228.629.929.929.728.430.631.631.530.328.630.931.831.231.130.233.833.533.133.333.133.533.331.731.131.531.328.928.1

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


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
Value81207774798778817726715284168489841880437419826081008009
Percentage of StockholdersEquity88.889.491.291.791.491.095.996.296.997.796.596.196.495.7
Percentage of Assets26.626.527.627.728.027.831.332.031.931.229.332.032.331.9
Percentage of Assets us-gaap:OperatingSegments y:ReinsuranceSegmentAndInsuranceSegment30.430.131.431.331.630.834.535.335.134.032.034.734.934.5

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value-13.9-14.1-13.1-26.5-27.0-27.4-27.9-14.3-14.6-14.8-15.7-20.5-19.9-20.1-15.5-11.9-12.0-12.1-11.7-11.2-11.2-11.4-11.6-12.9-13.0-12.6
Percentage of StockholdersEquity-0.2-0.2-0.1-0.3-0.3-0.3-0.3-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2-0.2-0.2-0.2
Percentage of Assets-0.0-0.0-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.0-0.0-0.1-0.0-0.0-0.0-0.0-0.1-0.1-0.1-0.1
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value41633556451043933321370289126-61.6-90.6-44.2-5.8718539458320232427391324231226362455
Percentage of StockholdersEquity4.63.96.55.95.20.43.74.23.31.5-0.8-1.1-0.5-0.18.46.65.43.92.95.34.94.23.13.04.76.1
Percentage of Assets1.41.12.01.81.60.11.21.41.10.5-0.2-0.4-0.2-0.02.82.11.91.31.01.81.61.41.01.01.51.9
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value303224452375291-129.343171223151-14.157-202.003-220.8-172.3-123.66184383502021093312982291161162523531862501551709487328
Percentage of StockholdersEquity3.32.65.24.43.5-1.62.02.51.7-0.2-2.6-2.6-2.1-1.57.35.34.22.51.44.13.83.01.51.63.34.72.73.95.35.93.53.311.8
Percentage of Assets1.00.81.61.31.1-0.50.60.80.6-0.1-0.8-0.9-0.7-0.52.41.71.40.80.51.41.31.00.50.51.11.50.81.12.42.61.50.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value-99.2-96.9-99.4-108.6-120.7-135.5-121.8-132.8-122.4-125.6-124.7-109.7-108.2-97.7-84.6-88.8-96.2-106.1-111.2-84.8-81.8-83.4-104.0-97.5-97.1-89.2
Percentage of StockholdersEquity-1.1-1.1-1.1-1.3-1.4-1.7-1.4-1.5-1.4-1.5-1.6-1.3-1.3-1.2-1.0-1.1-1.1-1.3-1.4-1.0-1.0-1.1-1.4-1.3-1.3-1.2
Percentage of Assets-0.3-0.3-0.3-0.4-0.4-0.5-0.5-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.3-0.3-0.4-0.4-0.5-0.4-0.3-0.4-0.5-0.4-0.4-0.4
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:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value36123613361336093609361036083608360836083612361236123613361236113611361036133619938928921742
Percentage of StockholdersEquity39.541.641.342.042.745.941.140.941.543.847.042.043.043.242.445.547.848.352.256.532.131.933.928.1
Percentage of Assets11.812.312.512.713.114.013.413.613.714.014.314.014.414.414.215.215.815.415.515.914.514.414.90.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value17171717171717171717171717171717171717179.1189.1189.1188.3498.159
Percentage of StockholdersEquity0.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.3
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value6952654863186159603258556435640363136017557762896004570950915014455739993320269119901900175915331458
Percentage of StockholdersEquity76.075.372.271.671.374.573.372.572.773.172.573.271.468.259.863.160.353.548.042.068.065.364.757.952.4
Percentage of Assets22.822.321.821.621.822.723.924.224.023.322.024.423.922.720.121.119.917.014.211.830.729.528.40.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-1743.434-1707.908-1645.93-1565.426-1495.475-1496.554-1455.877-1423.901-1404.627-1393.059-1312.939-1103.835-1057.885-843.497-824.906-812.84-747.784-507.699-213.911-175.818-167.319-99.686-66.325-24.290.0
Percentage of StockholdersEquity-19.1-19.6-18.8-18.2-17.7-19.0-16.6-16.1-16.2-16.9-17.1-12.8-12.6-10.1-9.7-10.2-9.9-6.8-3.1-2.7-5.7-3.4-2.4-0.90.0
Percentage of Assets-5.7-5.8-5.7-5.5-5.4-5.8-5.4-5.4-5.3-5.4-5.2-4.3-4.2-3.4-3.2-3.4-3.3-2.2-0.9-0.8-2.6-1.5-1.10.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


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
Value17171717171717171717171717171717171717171717171717171717171717171717171717179.1189.1189.1179.1189.1189.118
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
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
Value36123613361336093609361036083608360836083612361236123613361236113611361136113611361136113611361136093610361036113610361136133612361236123619362636263626938937937928928921
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.812.312.512.713.114.013.413.613.714.014.314.014.414.414.214.014.715.115.215.015.215.715.815.415.115.315.415.115.115.415.515.515.815.815.915.916.216.714.514.614.214.214.414.9

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value69526548631861596032585564356403631360175577628960045709509149505265516350144944478847114557440343074124399938603673352533203114300128882691278426582549199019521933197619001759
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.822.321.821.621.822.723.924.224.023.322.024.423.922.720.119.321.521.621.120.520.120.419.918.818.017.517.016.115.415.014.213.413.112.711.812.211.911.730.730.529.230.329.528.4

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value303224452375291-129.343171223151-14.157-202.003-220.808-172.307-123.62618438350202109331297229116116252409353346464279186185803132503141391521557121824117094
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.00.81.61.31.1-0.50.60.80.6-0.1-0.8-0.9-0.7-0.52.41.71.40.80.51.41.31.00.50.51.11.71.51.41.91.20.80.80.41.41.11.40.60.72.41.13.33.72.61.5

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value496442253474316-7.285286254239-66.38578174154-5.16919222-115.737902489415061289180-35.165-13.52177133-103.54-4.5667631-42.851
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.157.69.565.564.3-1.612.439.939.7-12.96.439.845.0-2.11.213.3-9.06.720.97.912.35.023.514.6-3.4-4.833.260.9-41.7-2.030.712.6-17.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-703.762102-691.448-864.334-621.502892-28.057-135.326-201.175-111.981476-115.379-47.57932126-158.973183-3.428-291.8-165.697-159.62930-128.92-685.54347051-17.089-98.49397-5.878-346.7654873
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-87.913.4-26.0-119.4-126.1190.8-1.2-21.2-33.3-21.838.8-26.3-13.912.97.6-9.514.2-0.3-24.5-13.9-13.02.4-10.5-55.544.918.3-7.3-44.939.4-2.5-138.619.429.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-119.66-127.859-16.794-45.35398-500.05319-44.3425.239-83.729-159.41-30.973-185.677-160.624-11.551-11.485-85.713-1.1-21.913-7.282-40.311-8.7330.0397-1.126-43.915-55.133-14.389-6.0-16.274289-51.83-7.342
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.9-16.7-0.6-6.380.8-106.90.9-6.90.9-16.3-13.0-7.1-54.2-63.8-0.7-0.7-6.7-0.1-1.8-0.6-3.3-0.70.032.2-0.1-15.6-23.7-6.6-2.4-7.0115.7-20.7-2.9

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
Value-326.015406-439.137-422.092973762817246-260.699391
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-40.752.9-16.5-58.319.880.412.211.47.7-50.731.9

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-162.659582924-165.136386-167.29727-143.409-88.546321-96.991-47.00995-435.662257-62.31116-63.885-46.92-191.40326553-36.613-135.314-71.09688-29.702126-118.208-121.62312-67.433173-4.554130-11.453-43.906-13.813-87.768112
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value496442253474316-7.285286254239-66.38578174154-5.16919222-115.737902489415061289180-35.165-13.52177133-103.54-4.5667631-42.851
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax62.157.69.565.564.3-1.612.439.939.7-12.96.439.845.0-2.11.213.3-9.06.720.97.912.35.023.514.6-3.4-4.833.260.9-41.7-2.030.712.6-17.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value403230159126177-361.2183190295440-712.1284295171153-314.157101149691557715415696182125139186148204205113113196-92.61251095603719157137366658
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.430.06.017.536.0-77.21.414.248.985.6-58.065.086.168.29.2-18.86.69.74.89.74.910.411.58.114.010.810.713.811.515.915.19.59.516.0-7.510.28.953.413.48.26.928.816.114.626.423.1

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value403230126177-361.21890295440284295171
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax50.430.017.536.0-77.214.248.985.665.086.168.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
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
Value419238174137176-361.47236101304447-704.391289298171158-309.947102149691587715415697183125139186149204205113113196-92.612125
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax52.431.06.519.035.8-77.31.615.950.587.1-57.466.087.168.09.5-18.66.69.74.89.84.910.511.68.214.110.810.713.811.615.915.19.59.516.0-7.510.2

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-703.762102-691.448-864.334-621.502892-28.057-135.326-201.175-111.981476-115.379-47.57932126-158.973183-3.428-291.8-165.697-159.62930-128.92-685.54347051-17.089-98.49397-5.878-346.7654873
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-87.913.4-26.0-119.4-126.1190.8-1.2-21.2-33.3-21.838.8-26.3-13.912.97.6-9.514.2-0.3-24.5-13.9-13.02.4-10.5-55.544.918.3-7.3-44.939.4-2.5-138.619.429.2

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-119.66-127.859-16.794-45.35398-500.05319-44.3425.239-83.729-159.41-30.973-185.677-160.624-11.551-11.485-85.713-1.1-21.913-7.282-40.311-8.7330.0397-1.126-43.915-55.133-14.389-6.0-16.274289-51.83-7.342
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-14.9-16.7-0.6-6.380.8-106.90.9-6.90.9-16.3-13.0-7.1-54.2-63.8-0.7-0.7-6.7-0.1-1.8-0.6-3.3-0.70.032.2-0.1-15.6-23.7-6.6-2.4-7.0115.7-20.7-2.9

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


Payments
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-152018-03-31
Value0.00.00.02150.00.00.0154153
Percentage of PaymentsOfDividends0.00.00.0100.00.00.00.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value356380690.0443119128020945214217.499122.390.053511511326786265940.00.08.813314355146.402166.736527.517
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
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
Value-0.119.8-11.330.583-0.0070.2240.0120.003-0.0020.195-0.564-0.0070.0120.179-2.4070.392-0.0060.282-0.004-0.0360.0570.2720.0040.0050.0060.2430.0030.0190.0110.2370.0360.0020.0010.225-0.0990.0090.0310.0830.020.06-0.0340.2030.0060.044
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value509451460516739837870837912881872884206120371777124
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-31
Value1222231825171615151515151515
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7720478336140354249153-64.87-514.287783-114.852-144.06-176.351-138.732532143-191.89214993204-115.073-392.21135-71.498912729-43.266-320.378-115.253134-19.204-45.7415416371-595.268-51.19258118-174.88-41.99640-34.714-101.02
Percentage of AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

y:WilbertPlasticServices


Business
Period End2021-05-10
Value93
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessCombinationConsiderationTransferredLiabilitiesIncurred us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferredLiabilitiesIncurred

y:WilbertPlasticServices


Business
Period End2021-05-10
Value33
Percentage of BusinessCombinationConsiderationTransferredLiabilitiesIncurred100.0

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

us-gaap:ConcentrationRiskPercentage1

y:OtherReinsurers, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value44.80.455
Percentage of ConcentrationRiskPercentage1100.0100.0

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

us-gaap:CededCreditRiskSecured, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value38.00.403
Percentage of ConcentrationRiskPercentage184.888.6

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

us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value100.01.0
Percentage of ConcentrationRiskPercentage1223.2219.8

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

srt:AMBestAMinusRating, y:ThirdPointReinsuranceGroup, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value4.30.053
Percentage of ConcentrationRiskPercentage19.611.6

srt:AMBestAPlusPlusRating, y:Chubb, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-31
Value3.9
Percentage of ConcentrationRiskPercentage18.7

srt:AMBestAPlusRating, y:RenaissanceReHoldingsLimited, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value6.50.046
Percentage of ConcentrationRiskPercentage114.510.1

srt:AMBestAPlusRating, y:SwissReinsuranceCompany, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value5.30.054
Percentage of ConcentrationRiskPercentage111.811.9

srt:AMBestAPlusRating, y:WrBerkleyCorporation, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value4.00.041
Percentage of ConcentrationRiskPercentage18.99.0

srt:AMBestARating, y:FairfaxFinancialHoldingsLimited, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value5.90.055
Percentage of ConcentrationRiskPercentage113.212.1

srt:AMBestARating, y:LloydsOfLondon, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value8.30.081
Percentage of ConcentrationRiskPercentage118.517.8

srt:AMBestARating, y:PartnerReLimited, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value6.50.06
Percentage of ConcentrationRiskPercentage114.513.2

y:NotRated, y:KaneSACLtdBowerySegregatedAccount, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value3.40.047
Percentage of ConcentrationRiskPercentage17.610.3

y:NotRated, y:KaneSACLtdRondoutSegregatedAccount, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value7.10.074
Percentage of ConcentrationRiskPercentage115.816.3

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

y:ReinsurersRatedAOrHigher, us-gaap:ReinsuranceRecoverableForPaidAndUnpaidClaimsAndClaimsAdjustments, us-gaap:ReinsurerConcentrationRisk


Concentration
Period End2021-03-312020-03-31
Value71.00.66
Percentage of ConcentrationRiskPercentage1158.5145.1

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff


Debt
Period End2020-12-312020-09-302020-06-30
Value0-100000.05500000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff0.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.246-1.972-2.871-3.454-17.02131
Percentage of DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Debt
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value0.0-0.1-0.1-0.40.7
Percentage of DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal-0.05.12.92.42.2

us-gaap:OperatingSegments


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.2-1.9-2.7-3.4-16.630
Percentage of DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal81.396.394.098.497.597.8

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.2-1.9-2.7-3.4-16.630
Percentage of DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal81.396.394.098.497.597.8

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-0.2-2.0-2.9-3.4-17.031
Percentage of DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal81.3101.4101.098.499.9100.1

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAmortizationAndAccretionNet


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value42434541403334282927313031332836343545403934383844424648493449587365106140172457.1466.4546.676.775
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DilutiveSecurities

us-gaap:DilutiveSecurities


Dilutive
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-312018-06-302018-03-312017-06-302016-06-302015-06-302015-03-312014-06-302014-03-312012-12-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value-800000.05000000.02200000.00-3000000.0000-1300000.0000000-200000.0-200000.0100000.0200000.0-1300000.0-100000.0-100000.0400000.0-100000.0
Percentage of DilutiveSecurities100.0100.0100.00.0100.00.00.00.0100.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarlyRepaymentOfSeniorDebt

us-gaap:EarlyRepaymentOfSeniorDebt


Early
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.00.0307
Percentage of EarlyRepaymentOfSeniorDebt0.00.00.0100.0

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents

us-gaap:EffectOfExchangeRateOnCashAndCashEquivalents


Effect
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.52-11.04716134.177-9.4123.903-2.3432.7271.396-3.395-4.57-8.9056.0871.7726.4489.5550.2667.4662.8623.3552.355-2.61-4.8636.681-18.053-10.827-6.5031.2591.276-2.564-0.842-15.244-25.259-4.7396.528-8.2581.122
Percentage of EffectOfExchangeRateOnCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


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
Value2031127792242-522.976190-16.691143392-741.765370185-42.649
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


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
Value3427-42.7-10.60.0-1.40.30.00.43.3-50.9-3.738-28.6
Percentage of EquitySecuritiesFvNiGainLoss16.924.3-55.1-11.40.00.30.2-0.00.30.86.9-1.020.767.1

us-gaap:OperatingSegments


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
Value16985120103242-521.6190-16.7143389-690.9373146-13.9
Percentage of EquitySecuritiesFvNiGainLoss83.175.7155.0111.4100.099.799.9100.199.799.293.1101.079.332.6

us-gaap:EquitySecuritiesFvNiGainLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


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
Value16985120103242-521.6190-16.7143389-690.9373146-13.9
Percentage of EquitySecuritiesFvNiGainLoss83.175.7155.0111.4100.099.799.9100.199.799.293.1101.079.332.6

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss


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
Value11-3.2-36.63.450-164.91.4-16.21162-198.97.34.411
Percentage of EquitySecuritiesFvNiRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value19211511489191-358.1189-0.5131330-542.9362180-54.2
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1


Fair
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
Value0.10.4-0.60.0-13.30.1-2.4-0.3-2.7-9.9-0.80.60.11.6-2.41.59.33.92.12.36.3-2.6-0.4-0.9-1.3-0.7-16.6-2.1-0.5-1.0-1.5-1.4-1.50.6-1.3-1.9
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:InvestmentType

us-gaap:DomesticCorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312017-12-312017-09-30
Value0.00.20.00.0-4.00.23.40.1-0.1-9.9-0.40.1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.050.0-0.00.030.1200.0-141.7-33.33.7100.016.76.7

us-gaap:ForeignCorporateDebtSecurities


Fair
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value0.00.0-5.7-0.10.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1-0.00.0237.533.3-0.00.0

us-gaap:OtherLongTermInvestments


Fair
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.00.10.00.10.00.1-0.11.2-0.60.08.42.40.51.90.81.5
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.025.0-0.0-33.3-0.016.7-100.075.025.00.090.361.523.882.612.7-57.7

y:OtherAssetBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.20.10.10.0-9.4-0.10.0-0.40.10.50.60.40.11.2
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1200.025.0-16.70.070.7-100.0-0.0133.3-12.583.3600.025.0-4.280.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss


Fair
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
Value9.4-14.41923121-128.83.62.72432-39.6-3.9-14.0-11.41.36.7-6.2102.221-11.61522130.8-8.1216.4-1.1-0.7-1.6-3.60.6-4.0-4.5-11.9
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:InvestmentType

us-gaap:CommercialMortgageBackedSecurities


Fair
Period End2020-12-312020-09-302020-06-302020-03-312017-12-312017-09-30
Value0.00.41.0-1.30.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss0.01.70.81.00.00.0

us-gaap:DomesticCorporateDebtSecurities


Fair
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
Value5.7-17.13.54.633-18.8-0.68.71515-4.1-0.5-1.5-5.4-0.61.7
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss60.6118.818.019.827.414.6-16.7322.263.448.310.412.810.747.4-46.225.4

us-gaap:ForeignCorporateDebtSecurities


Fair
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
Value0.9-3.92.21.910-7.34.0-1.92.82.6-0.4-0.3-0.9-1.3-0.40.4
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss9.627.111.38.28.65.7111.1-70.411.48.01.07.76.411.4-30.86.0

us-gaap:OtherLongTermInvestments


Fair
Period End2021-03-312020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-0.10.20.1-0.30.1-0.2-0.2-0.5-1.9-1.6-0.41.7-8.8-1.81.4-1.2-0.4-1.3
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss0.7-0.22.8-11.10.4-0.60.512.813.614.0-30.825.4141.9-17.663.6-5.63.4-8.3

us-gaap:ResidentialMortgageBackedSecurities


Fair
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302017-12-312017-09-30
Value0.20.10.0-0.20.00.00.90.1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss1.00.40.00.2-0.0-0.069.21.5

y:OtherAssetBackedSecurities


Fair
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
Value2.76.7131677-101.40.0-3.85.315-32.0-2.6-4.4-3.31.83.1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss28.7-46.569.669.863.378.70.0-140.721.546.880.866.731.428.9138.546.3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value528213179311558975892691892634711643952573374291525210101511210042121722503581282619.81005.025-0.1122
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:InvestmentType

us-gaap:DomesticCorporateDebtSecurities


Fair
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
Value261930127.36.76132855.8283681363169
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases5.19.216.938.147.411.463.455.091.78.415.113.817.222.08.126.8

us-gaap:ForeignCorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-30
Value0.02.0162.95.07.715130.1132015402.6
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.00.99.19.232.513.115.922.80.119.910.55.710.31.0

us-gaap:ResidentialMortgageBackedSecurities


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.0-0.10.10.90.1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.0-0.30.61.50.1

y:OtherAssetBackedSecurities


Fair
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
Value501192133163.04314117.249141210366128160168
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases94.989.974.053.019.574.014.419.67.871.574.479.777.878.040.565.4

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value0.10.47.02.0478.3-0.4781831228.4-319.0227153954727229.0631228155068536041529.910100.7234.0-0.71.91.3
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:InvestmentType

us-gaap:DomesticCorporateDebtSecurities


Fair
Period End2020-12-312018-06-302018-03-312017-12-312017-09-30
Value0.00.71.8315.9
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.31.232.412.6

us-gaap:ForeignCorporateDebtSecurities


Fair
Period End2020-12-312020-09-302019-12-312019-09-302019-06-302019-03-312018-06-302018-03-312017-12-312017-09-30
Value0.00.00.00.00.05.61.00.90.40.1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.0-0.00.00.04.60.40.60.40.2

us-gaap:OtherLongTermInvestments


Fair
Period End2021-06-302021-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.10.30.10.00.15.5-0.10.0192.40.51.90.81.5
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.075.01.2-0.00.03.6-0.10.069.310.85.63.06.25.4

y:OtherAssetBackedSecurities


Fair
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
Value0.00.17.00.0468.3-0.5781831168.3-309.02201455439
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.025.0100.00.098.3100.0125.0100.0100.095.498.896.996.794.757.384.7

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value122113472518374832433920515511323586149331.71.95.72.2155.74.2244026196.2165.05.83.84.80.7
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements us-gaap:InvestmentType

us-gaap:DomesticCorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-30
Value2123325.45.73.6302.71.02.61.62.21.9
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements17.220.966.921.430.59.763.08.42.36.60.81.41.7

us-gaap:ForeignCorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.21.21.21.28.11.11.11.26.71.01.1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements1.01.12.54.843.33.02.33.715.42.50.5

us-gaap:ResidentialMortgageBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312017-12-312017-09-30
Value0.10.20.20.00.10.10.00.40.3
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements0.10.20.40.00.50.30.00.30.3

y:OtherAssetBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-30
Value1008814184.83216283535202152111
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements81.877.929.973.825.787.134.787.982.390.998.797.798.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3


Fair
Period End2021-06-302021-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-31
Value0.05.80.05.81.3140.70.01.3630.00.82.12.62.25.70.02.74.45.99.60.0146.33.1351510.0210.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.0100.00.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 us-gaap:InvestmentType

y:OtherAssetBackedSecurities


Fair
Period End2021-06-302021-03-312019-12-31
Value0.05.80.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3


Fair
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
Value24102.90.03.1149.01.5131.011571511.6700.03.14.1145.10.10.23.63.05.810150.02325.20.0100
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FinancialInstrument

y:OtherAssetBackedSecurities


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.00.03.1116.80.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.0100.077.675.60.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:InvestmentType

us-gaap:CommercialMortgageBackedSecurities


Fair
Period End2021-06-302021-03-312018-12-312018-09-302018-06-302018-03-31
Value0.05.80.00.00.01.6
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.053.20.00.00.0100.0

us-gaap:ForeignCorporateDebtSecurities


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value2.90.00.03.30.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3100.00.00.022.40.00.00.0

y:OtherAssetBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value235.10.00.03.1116.80.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel397.646.80.00.0100.077.675.60.0

us-gaap:ImpairmentOfOilAndGasProperties dei:LegalEntity

us-gaap:ImpairmentOfOilAndGasProperties

y:StrandedOilResourcesCorporation


Impairment
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.01.64430
Percentage of ImpairmentOfOilAndGasProperties0.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value144120221018163.1811423-6.7363.0390.71914-23.2887.317146.488-10.776-6.314163042-8.1161516-25.493-2.1042223-7.3711.9981817176010846-1.8140.2266.311-1.878-3.699-1.0894.512-3.13
Percentage of IncreaseDecreaseInDeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi

us-gaap:IncreaseDecreaseInEquitySecuritiesFvNi


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2031127792242-522.976190-16.691143392-741.765370185-42.649
Percentage of IncreaseDecreaseInEquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements

us-gaap:IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value37-8.951-13.8952-22.9882315105.513-19.984-11.6773613-0.60920432623575473170163-17.788
Percentage of IncreaseDecreaseInFundsHeldUnderReinsuranceAgreements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap: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
Value211322289630-15.1041382942.223-223.326-395.17395339-198.776-156.981-585.125139670-97.2542914285-40.512-623.25-41.06949-182.881-109.877-80.24
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
Value154138532.803-2.49914319-36.774191033.6257.028-24.08958-80.434254662-52.752-76.7341173.70829-120.429203-44.282-47.694-127.02370113-43.377-106.55515287-90.881-86.069-93.83212-61.84651166.651-61.677306.303
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:IncreaseDecreaseInPrepaidReinsurancePremiums

us-gaap:IncreaseDecreaseInPrepaidReinsurancePremiums


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
Value52341.099182518-10.46415129.849-7.227193.89414-18.13911-21.93117-6.9335.11812-0.002-8.42-0.3491.94612-23.301-7.8583012-18.712-11.1333314-16.7540.46526-4.862-8.948-10.87925-6.381-12.924-11.04315-8.511
Percentage of IncreaseDecreaseInPrepaidReinsurancePremiums100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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-0.1636.66977156-104.528-49.69359-47.362-105.679-165.434144165-50.874-96.582-4.996522-75.091-34.19674-20.77412-65.627-163.3383328-0.2156.102244.868-26.318-6.44174-25.321-50.668100-12.084-58.503-10.378-5.2987.333-18.076-8.371-39.361-6.351-39.226-7.644
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
Value15219295115104102703195101-33.71202869-113.66413939-64.641-24.3499493139-42.527668-140.74-25.27614292-64.435-20.69312618-103.874-39.558140-1.375-27.903-11.20585-20.822-44.581-28.10155-33.097
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:IncurredClaimsPropertyCasualtyAndLiability

us-gaap:IncurredClaimsPropertyCasualtyAndLiability


Incurred
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
Value108711121113117310241027118990779679211539577386706941491734699718718815664602594595546631623629611616644650567104267268023311412112271911068396
Percentage of IncurredClaimsPropertyCasualtyAndLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncurredClaimsPropertyCasualtyAndLiability us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Incurred
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
Value108711121113117310241027118990779679211539577386706941491734699718718815664602594595546630623629611616644650567
Percentage of IncurredClaimsPropertyCasualtyAndLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncurredClaimsPropertyCasualtyAndLiability us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:InsuranceSegment


Incurred
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
Value243263226314246165257177151139226148144131158372161142170156165138157156166140142148146147163157135
Percentage of IncurredClaimsPropertyCasualtyAndLiability22.423.720.326.824.016.121.619.519.017.619.615.519.619.622.825.022.020.323.821.820.320.826.226.228.025.722.623.923.324.126.624.520.8

us-gaap:OperatingSegments, y:ReinsuranceSegment


Incurred
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
Value8438488878597788629327306456539278095935395361119573557547562649526444438428406488474482463453486515
Percentage of IncurredClaimsPropertyCasualtyAndLiability77.676.379.773.276.083.978.480.581.082.480.484.580.480.477.275.078.079.776.278.279.779.273.873.772.074.377.476.176.775.973.475.579.2

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Incurred
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
Value108711121113117310241027118990779679211539577386706941491734699
Percentage of IncurredClaimsPropertyCasualtyAndLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncurredClaimsPropertyCasualtyAndLiability us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:OperatingSegments, y:InsuranceSegment, y:CapSpecialtyIncorporated


Incurred
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
Value565556575049795146454541393438373533323430262729332423252924
Percentage of IncurredClaimsPropertyCasualtyAndLiability5.24.95.14.94.94.86.75.65.85.73.94.45.35.15.52.54.84.74.64.83.84.04.65.05.74.53.74.14.73.9

us-gaap:OperatingSegments, y:InsuranceSegment, y:RsuiGroupIncorporated


Incurred
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
Value18620816925619611617712510594181107105969030593801149410985108105114100102106105112102121110
Percentage of IncurredClaimsPropertyCasualtyAndLiability17.218.715.321.919.111.315.013.913.311.915.711.214.314.513.020.512.811.516.013.213.412.817.917.819.218.416.317.216.718.416.518.916.9

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Incurred
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value525583553504614513505508490497421440442360459450435424404448430368353361343361361360402369409416
Percentage of IncurredClaimsPropertyCasualtyAndLiability47.252.447.149.359.843.255.763.961.943.144.059.666.051.930.861.262.259.056.355.064.761.159.460.762.857.357.957.465.959.863.564.1

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Incurred
Period End2021-06-302020-06-30
Value570504
Percentage of IncurredClaimsPropertyCasualtyAndLiability52.449.3

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Incurred
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
Value27332330330627324741822513616243038715396175659122121123157201967685676312611312161847798
Percentage of IncurredClaimsPropertyCasualtyAndLiability25.229.127.226.126.724.135.224.817.120.537.340.520.814.425.344.216.717.417.221.924.714.512.714.311.311.620.118.219.410.013.612.115.1

us-gaap:InvestmentIncomeDividend

us-gaap:InvestmentIncomeDividend


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value29167.84.95.2109.09.79.49.823162216196.7119.414121112131311141715191318131215108.34.31.98.09.6109.8
Percentage of InvestmentIncomeDividend100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInvestmentExpense

us-gaap:InvestmentIncomeInvestmentExpense


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value6.96.06.57.67.27.16.87.47.27.56.16.86.6128.05.86.97.36.56.26.76.96.87.16.17.37.27.27.47.04.75.35.35.05.23.75.02.82.01.51.41.8
Percentage of InvestmentIncomeInvestmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1


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
Value210874272331838740023617275394207137100462147128114528918925
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:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1


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
Value717766493554753770601587736914490562675690482553542647163579522600
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:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseForeignCurrencyTranslationGainLoss


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
Value33291593-11.0-7.531-32.5-23.817-14.7-52.8-74.1491.66567-12.2-75.1-43.442-21.9
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:NetIncomeLossAttributableToRedeemableNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToRedeemableNoncontrollingInterest


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
Value158.0221511-0.918-0.2544.491109.3747.6757.6614.5593.288-0.3935.1174.210.8480.1840.393.0160.1890.1480.4320.5680.6690.211
Percentage of NetIncomeLossAttributableToRedeemableNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.2-1.0-1.80.50.40.5-13.60.30.20.94.8-0.60.2-1.3-3.60.10.1-0.4-0.50.00.20.21.30.1
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value91-217.96477411-276.6-39.2861721830.8-33.6-33.3-146.415697141124-170.7468910243-150.9
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent45750.021790.0-3600.015420.0102925.0-55320.0288.228733.386300.020377.816.75600.0-16650.011261.5-4344.497900.0141800.0-31225.034140.00.044800.051050.03376.9-150900.0

us-gaap:AccumulatedOtherComprehensiveIncome


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value89-216.47289426-289.8-41.876176183-9.4-35.7-43.6-142.6157105151129-197.6439112238
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent44700.021640.0-4011.117940.0106725.0-57960.0307.425366.788000.020377.8-195.85950.0-21800.010969.2-4361.1105400.0151800.0-32400.039520.00.045700.061450.02976.9

us-gaap:AccumulatedTranslationAdjustment


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-2.32.59.21214-13.711-10.43.2-0.9-15.0-1.5-10.55.14.27.49.95.1-26.4-3.01.620-6.5-0.4
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent-1150.0-250.0-511.12420.03700.0-2740.0-80.9-3466.71600.0-100.0-312.5250.0-5250.0-392.3-116.77400.09900.0-1275.05280.00.0800.010300.0-500.0-400.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value81-229.70870406-287.47781162187-46.42-38.41-144.979
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value81-229.70870406-287.47781162187-46.42-38.41-144.979
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-0.5980.6542.4393.2193.938-3.6512.921-2.7490.844-0.235-3.974-0.407-2.7971.3562.2943.9675.3642.719-14.207-1.6370.87911-3.496-0.2081.555-5.791-10.783-14.0393.1260.233293.655-8.885-5.3667.5525.931-8.0121.730.00.00.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value0.2-1.0130.50.40.5-13.60.30.20.94.8-0.60.2-1.3-3.60.10.1-0.4-0.50.00.20.21.30.1
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value81-229.75470406-287.5-49.48116218729-46.4-38.4-145.01668013888-195.43666925.2-135.6
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent40550.022970.0406.714140.0101550.0-57500.0363.227133.381400.020866.7604.27733.3-19200.011153.8-4616.780500.0138200.0-22050.039080.00.033400.046150.0400.0-135600.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value79-228.27783421-300.7-52.07116618718-48.5-48.7-141.21668814892-222.333681130.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent39500.022820.0575.416660.0105350.0-60140.0382.423766.783100.020866.7391.78083.3-24350.010861.5-4633.388000.0148200.0-23225.044460.00.034300.056550.00.0

us-gaap:AccumulatedTranslationAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-2.32.59.21214-13.711-10.43.2-0.9-15.0-1.5-10.55.14.27.49.95.1-26.4-3.01.620-6.5-0.4
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-1150.0-250.068.72420.03700.0-2740.0-80.9-3466.71600.0-100.0-312.5250.0-5250.0-392.3-116.77400.09900.0-1275.05280.00.0800.010300.0-500.0-400.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-0.1130.965-13.398-0.42-0.419-0.51713-0.322-0.104-0.937-4.7350.551-0.2091.3223.556-0.098-0.0980.3950.564-0.095-0.095-0.262-1.246-0.129-0.1370.522100.0060.007-0.1333.997-1.4150.0370.154-1.3190.0250.0140.763.1780.050.05
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-0.1130.965-0.42-0.419-0.517-0.322-0.104-0.9370.551-0.2091.322
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax


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
Value91-217.9356477411-276.629-39.248861721830.724-33.601-33.305-146.35815697141124-170.692468910243-150.904-109.3326157-54.3320615178110-204.3385-27.3771722637127-133.375-24.428997180-57.40129
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value24-57.9321720109-73.534-10.4332245480.192-8.932-8.853-38.90584527667-91.91125485423-81.256-58.8713330-29.255110814259-110.02445-14.74292142068-71.817-13.15453
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


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
Value739723782669510466562617581502555415343264288277225175189228184162142686367735966536739273025473415122.5958.67310109.9288.0828.851
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherCostAndExpenseOperating us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value0.30.33.52.63.46.16.46.67.07.38.09.28.87.99.69.69.9101225147405141423241209.7
Percentage of OtherCostAndExpenseOperating0.00.00.40.40.71.31.11.11.21.51.42.22.63.03.33.54.45.985.875.773.760.570.069.164.060.060.751.235.6

us-gaap:OperatingSegments


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value739723779666506460555610574495547406334257258.3252315231922201616262218232126191720
Percentage of OtherCostAndExpenseOperating99.9100.099.699.699.398.798.998.998.898.598.597.897.497.08.83.011.513.28.210.310.513.614.224.426.339.530.130.936.139.939.448.764.366.4

us-gaap:OtherCostAndExpenseOperating us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value724709742643473450540578548465548382314240
Percentage of OtherCostAndExpenseOperating97.998.094.896.192.896.696.293.794.392.698.792.191.690.6

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value15143723339.914322629-0.8231917258.32523
Percentage of OtherCostAndExpenseOperating2.02.04.73.56.52.12.65.34.55.9-0.15.75.86.48.83.011.513.2

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForLossesAndLossAdjustmentExpense


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
Value9288549217879378571001823909990884770812791944701671761692670612626
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: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
Value74-101.159264218-622.4341526.6144264-73.423145-8.967-74.366235056-55.197-29.388-178.352-4.94790122221256-272.263-1.23225138921.499-248.809209-32.585-20.439203-114.35704.195-4.6280.371.109-0.6525.715-50.992-12.5872.828
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:PaymentsForProceedsFromProductiveAssets

us-gaap:PaymentsForProceedsFromProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2012109.6288.9448.8412111012-15.58252.107113.4935.738-20.4864.485.0239.939
Percentage of PaymentsForProceedsFromProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromShortTermInvestments

us-gaap:PaymentsForProceedsFromShortTermInvestments


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
Value-217.642-117.29577-484.092576-378.854-48.344-86.792-219.714376202218-138.3623329-100.776-1023.5729492513014414265-282.717121-230.725-101.935164-268.244-418.64935888123372131-775.489402-625.33919-85.81616-18.753-148.99959149-58.208
Percentage of PaymentsForProceedsFromShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value255414011465144118191993107814501737246015099041311989162486715011811129410871734184416071721202321221662132620491744193521131811190311831510894443135270141159
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

y:WilbertPlasticServices


Payments
Period End2021-05-10
Value60
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4.985-0.00397261332165-1.1571242.253.01050.07934221211.021090.03.56943
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:PaymentsToAcquireTradingSecuritiesHeldforinvestment

us-gaap:PaymentsToAcquireTradingSecuritiesHeldforinvestment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value151746692677273331255130656936314482451
Percentage of PaymentsToAcquireTradingSecuritiesHeldforinvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenGross

us-gaap:PremiumsWrittenGross


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value2219205019461891172117701727165116701606148814751472145813541471145014201360140715091489138611681308125811341269139213011134117413401237114411761369
Percentage of PremiumsWrittenGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenGross us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-7.6-10.9-7.5-9.2-8.6-8.3-7.2-7.5-6.1-6.8-7.0-6.7-6.5-6.0-6.8-5.3-5.7-5.6-7.8-6.3-6.5-7.5-8.7-7.6-5.1-7.4-5.6-6.2-6.1
Percentage of PremiumsWrittenGross-0.3-0.5-0.4-0.5-0.5-0.5-0.4-0.5-0.4-0.4-0.5-0.5-0.4-0.4-0.5-0.4-0.4-0.4-0.6-0.5-0.5-0.6-0.8-0.6-0.4-0.6-0.5-0.5-0.5

us-gaap:OperatingSegments


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2227206119531900172917781735165816761613149514821479146413611477145514261367141515141496139411741315126611421276139713081139118013461242
Percentage of PremiumsWrittenGross100.3100.5100.4100.5100.5100.5100.4100.5100.4100.4100.5100.5100.4100.4100.5100.4100.4100.4100.5100.5100.3100.4100.6100.5100.5100.6100.8100.6100.4100.6100.5100.5100.5100.4

us-gaap:PremiumsWrittenGross us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:InsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value681523575522575451475415466381369344407349378350410370347350411353354344425364353354450367359341450
Percentage of PremiumsWrittenGross30.725.529.627.633.525.527.525.227.923.824.823.427.723.927.923.828.326.125.524.927.323.825.629.532.528.931.227.932.328.231.729.133.6

us-gaap:OperatingSegments, y:ReinsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1546153813771378115313271260124312101231112611371071111598211261045105510201065110211421039830890902789922947941780838896
Percentage of PremiumsWrittenGross69.775.070.872.967.075.072.975.372.576.775.777.172.876.572.676.572.174.375.075.773.076.775.071.168.071.769.672.768.072.368.871.466.9

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value222720611953190017291778173516581676161314951482147914641361147714551426
Percentage of PremiumsWrittenGross100.3100.5100.4100.5100.5100.5100.4100.5100.4100.4100.5100.5100.4100.4100.5100.4100.4100.4

us-gaap:PremiumsWrittenGross us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:OperatingSegments, y:InsuranceSegment, y:CapSpecialtyIncorporated


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value12310211211110185999593828183887477747365656870626060615453525649
Percentage of PremiumsWrittenGross5.65.05.85.95.94.85.85.85.65.25.55.76.05.15.75.05.14.64.84.94.64.24.35.24.74.34.84.24.13.8

us-gaap:OperatingSegments, y:InsuranceSegment, y:RsuiGroupIncorporated


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value557420463410474365375319372299287260318274262234295264248243307256265255339288280282377302299281395
Percentage of PremiumsWrittenGross25.120.523.821.727.620.721.719.422.318.619.317.721.618.819.415.920.418.618.217.320.417.219.121.926.022.924.722.227.123.226.423.929.5

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Premiums
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value972915904740914812787829816787685726718615681676680678665712759699572587630517597636642523550581
Percentage of PremiumsWrittenGross47.447.047.843.051.747.047.749.650.852.946.549.349.245.446.346.647.949.847.247.251.050.549.044.950.145.647.145.749.446.246.943.4

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Premiums
Period End2021-06-302020-06-30
Value1041740
Percentage of PremiumsWrittenGross46.943.0

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value505565462473413412447455381415339451345397367445369375342400389383339258302271271324310298256288314
Percentage of PremiumsWrittenGross22.827.623.825.024.023.325.927.622.825.822.830.623.427.227.230.325.526.425.228.425.825.724.522.123.121.624.025.622.322.922.624.623.5

us-gaap:PremiumsWrittenNet

us-gaap:PremiumsWrittenNet


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1878175416951637147815331505141314461385128012391275125311791260129312331198123613341322123810131146109110261127120911341001103311581093102310421223434173189244166
Percentage of PremiumsWrittenNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenNet us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1878175416951637147815331505141314461385128012391275125311791260129312331198123613341322123810131146109110261127120911341001103311581093
Percentage of PremiumsWrittenNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:InsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value469359411373391322342302333278269253299256276281314283262269323266263260315262252260319254252243315
Percentage of PremiumsWrittenNet25.020.524.322.826.521.022.821.423.120.121.120.523.520.523.422.424.323.021.921.824.320.121.325.727.524.024.623.126.422.425.323.527.2

us-gaap:OperatingSegments, y:ReinsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1409139412841263108612111162111111121107101098597699790397897894993696610101055974753830828773866890879748790843
Percentage of PremiumsWrittenNet75.079.575.777.273.579.077.278.676.979.978.979.576.579.576.677.675.777.078.178.275.779.978.774.372.576.075.476.973.677.674.776.572.8

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value187817541695163714781533150514131446138512801239127512531179126012931233
Percentage of PremiumsWrittenNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:OperatingSegments, y:InsuranceSegment, y:CapSpecialtyIncorporated


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value105871021029178928886767677826972696861616465585655575049485143
Percentage of PremiumsWrittenNet5.65.06.16.26.25.16.16.36.05.56.06.36.55.56.15.55.34.95.15.24.94.54.65.45.14.64.84.34.33.8

us-gaap:OperatingSegments, y:InsuranceSegment, y:RsuiGroupIncorporated


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value363272308271300244250213246201193176216187166170204182167168224173178176233190184193252195196185263
Percentage of PremiumsWrittenNet19.415.518.216.620.315.916.615.117.114.515.114.217.014.914.113.615.814.814.013.616.813.114.417.420.417.517.917.220.917.219.618.022.8

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Premiums
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value935889887730898795772807791752654700691601649661664643646695746684552578618508580618629516541572
Percentage of PremiumsWrittenNet53.352.454.249.458.652.854.755.857.158.852.854.955.251.051.551.253.953.752.352.156.555.254.550.556.749.551.551.255.551.652.449.4

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Premiums
Period End2021-06-302020-06-30
Value989730
Percentage of PremiumsWrittenNet52.749.4

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value419459395375355312367339305316257331275305301329317285292320315309290200252210265286271250232248271
Percentage of PremiumsWrittenNet22.426.223.323.024.120.424.424.021.122.820.126.721.624.325.626.124.523.124.425.923.623.423.519.822.019.325.925.422.422.123.224.123.4

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value58455244842632945935836420823534229642046654549046344351640735123733552344135332248039024435952844043251335456018271109965813012012459
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


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
Value-33.952-8.938-30.4940.684-1.7663.664-3.539-5.647-19.923-11.421-3.3422.5370.6634.654-2.33-1.832-2.181-13.0571245-12.4335.734-12.89314-7.0857.344-2.175141.1978.929-1.1-21.9131.531-8.7358.9050.01.5-1.1260.00.0-0.1590.4020.2010.0-0.0430.175
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.0100.0100.0100.00.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfOtherDebt

us-gaap:ProceedsFromRepaymentsOfOtherDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-49.783-55.7299423-94.836255-19.401378.1785312289.957-1.722-1.104-20.589-5.5091345-7.0284.508
Percentage of ProceedsFromRepaymentsOfOtherDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment

us-gaap:ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value100262217100800602343004401510107626396172
Percentage of ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value12001197113640040019609968008899871368611653101411496438431349941689146218002082119415041596141793015421668168215401095217895953353219232556100103
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanAndLeaseLosses


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-1000000.0200000.0-100000.0200000.0700000.01200000.0
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax


Reclassification
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6.3455.5710104.8929.76-4.407-28.303125.105-1.379-9.759173.5899.838-15.351-5.91938265956141112
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Reclassification
Period End2021-06-302021-03-312020-06-302020-03-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10115.57109.838-15.351-5.91938265956141112
Percentage of ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax0.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value1011106.35.610104.99.8-4.4-28.2125.1-1.4-9.8173.6362410229.838-15.3
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value1011-4.96.45.510104.89.8-4.4-28.2125.1-1.4-9.8173.6362410229.838
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0-47.6101.698.2100.0100.098.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodTax

us-gaap:ReclassificationFromAociCurrentPeriodTax


Reclassification
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.6871.4812.8832.6961.3012.594-1.171-7.5233.4081.357-0.366-5.2559.3771.932
Percentage of ReclassificationFromAociCurrentPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Reclassification
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.7693.131.4812.883
Percentage of ReclassificationFromAociCurrentPeriodTax0.00.0100.0100.0

us-gaap:ReinsuranceRecoverableCreditLossExpenseReversal

us-gaap:ReinsuranceRecoverableCreditLossExpenseReversal


Reinsurance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-3400000.0-1900000.01000000.00100000.03500000.0
Percentage of ReinsuranceRecoverableCreditLossExpenseReversal100.0100.0100.00.0100.0100.0

us-gaap:StockholdersEquityOther

us-gaap:StockholdersEquityOther


Stockholders
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.581-1.524-0.306-0.463-5.09-0.304-0.5133.81-0.2470.568-4.198
Percentage of StockholdersEquityOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityOther us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302018-06-302018-03-31
Value-0.001-0.0370.029
Percentage of StockholdersEquityOther-0.2-6.5-0.7

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.981-0.31-0.2680.616-1.499-0.2840.5854.176-0.2471.015-1.521
Percentage of StockholdersEquityOther168.820.387.6-133.029.493.4-114.0109.6100.0178.736.2

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-06-302018-03-31
Value-0.399-1.214-0.038-1.079-3.591-0.02-1.098-0.366-0.447-2.677
Percentage of StockholdersEquityOther-68.779.712.4233.070.66.6214.0-9.6-78.763.8

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense


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
Value1172116811781236105910861221966853829127010327907568191553798747825804905749
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:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense


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-85.5-56.1-64.8-62.3-34.7-59.0-31.8-58.9-56.6-37.4-116.2-75.0-52.2-85.7-125.6-61.5-63.6-47.7-106.3-86.4-90.0-85.3
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:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:LiabilityForCatastropheClaimsByCatastrophicEvent, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

y:AllOtherCatastropheEvents, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Supplemental
Period End2021-03-312020-03-31
Value-1.31.4
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense2.3-2.4

y:AllOtherCatastropheEvents, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Supplemental
Period End2021-06-302020-06-30
Value0.1-3.8
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-0.111.0

y:AllOtherCatastropheEvents, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Supplemental
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.4-4.50.5-32.3
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-1.68.0-1.454.7

y:COVID19GlobalPandemic, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Supplemental
Period End2021-03-31
Value-11.8
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense21.0

y:COVID19GlobalPandemic, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Supplemental
Period End2021-06-30
Value-18.5
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense21.6

y:COVID19GlobalPandemic, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Supplemental
Period End2021-06-302021-03-31
Value1729
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-20.8-53.1

y:Noncatastrophe, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Supplemental
Period End2021-03-312020-03-31
Value-54.2-12.4
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense96.621.0

y:Noncatastrophe, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Supplemental
Period End2021-06-302020-06-30
Value-54.2-34.4
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense63.499.1

y:Noncatastrophe, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Supplemental
Period End2021-06-302021-03-312020-06-302020-03-31
Value-23.0-11.5-13.5-14.4
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense26.920.538.924.4

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

y:AllOtherCasualtyAndOther, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Supplemental
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-43.8-33.6-34.4-11.0-59.0-36.3-27.2-25.7-75.3-38.7-33.6-30.2-73.8-41.7-27.7-31.2-49.1-56.2-40.7-30.9
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense67.653.999.118.6185.561.648.168.764.851.664.435.258.867.843.665.446.265.045.236.2

y:CasualtyAndOtherCatastropheEvents, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Supplemental
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value-3.80.4-3.8-1.3-2.60.7
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense5.9-0.611.04.14.4-1.2

y:CasualtyInsurance, y:InsuranceSegment, y:RsuiGroupIncorporated


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-2.6-1.1-7.1-6.616-1.01.6-0.2-12.1-5.6-11.0-4.3-1.5-11.0-10.4-6.9-9.5-12.2-3.2-11.9-10.4-9.8
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense3.02.011.010.6-47.61.7-5.00.321.415.09.55.72.912.88.311.214.925.63.013.811.611.5

y:PropertyAndOtherInsurance, y:InsuranceSegment, y:RsuiGroupIncorporated


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-6.7-1.6-6.2-7.90.0-0.5-1.7-1.0-0.41.9-3.2-27.70.1-0.1-5.5-1.7-0.83.8-24.6-4.6-0.8-3.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense7.82.99.612.7-0.00.85.31.70.7-5.12.836.9-0.20.14.42.81.3-8.023.15.30.93.5

y:PropertyCatastrophe, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Supplemental
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-16.04.60.5-32.37.2-12.5-9.98.4-4.69.65.1-30.4-10.0-7.8-4.0-0.4-5.2-1.2-6.7-1.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense24.7-7.4-1.454.7-22.621.217.5-22.54.0-12.8-9.835.58.012.76.30.84.91.47.41.2

y:PropertyNoncatastrophe, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Supplemental
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value13-19.7-13.5-14.4-3.2-10.8-6.3-19.1-22.5-12.4-18.8-11.0-21.9-0.3-18.9-31.1-21.2-9.6-28.6-32.2
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-21.531.638.924.410.118.311.151.119.416.536.012.817.40.529.765.219.911.131.837.7

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:StatementBusinessSegments

y:ReinsuranceSegment


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-76.4-53.5-49.7-48.3-51.2-57.7-55.0-59.6-44.8-36.4-102.4-41.5-50.7-71.6-108.7-49.8-52.6-38.3-75.5-69.0-78.0-71.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense89.495.476.777.5147.697.8173.0101.279.297.388.155.397.183.586.581.082.780.371.079.986.783.2

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:StatementBusinessSegments, us-gaap:Subsegments

y:InsuranceSegment, y:CapSpecialtyIncorporated


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
Value0.20.1-1.80.50.00.2231.90.72.70.4-1.5-0.1-3.0-0.3-2.3-0.2-0.5-1.0-0.9-0.8-1.5
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-0.2-0.22.8-0.8-0.0-0.3-73.3-3.2-1.2-7.2-0.32.00.23.50.23.70.31.00.91.00.91.8

y:InsuranceSegment, y:RsuiGroupIncorporated


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-9.3-2.7-13.3-14.516-1.5-0.1-1.2-12.5-3.7-14.2-32.0-1.4-11.1-15.9-8.6-10.3-8.4-27.8-16.5-11.2-12.8
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense10.94.820.523.3-47.62.50.32.022.19.912.242.72.713.012.714.016.217.626.219.112.415.0

y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Supplemental
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-67.3-47.6-33.2-38.2-11.0-59.0-36.3-28.6-25.7-75.3-38.7-37.0-30.2-76.8-41.7-29.7-6.8-49.1-58.2-42.7-37.8
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense120.073.553.3110.118.6185.561.650.568.764.851.670.935.261.167.846.714.346.267.447.444.3

y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Supplemental
Period End2021-06-302020-06-30
Value-72.6-38.2
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense84.9110.1

y:ReinsuranceSegment, y:PropertyReinsuranceSegment


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-3.813-2.1-15.1-13.0-46.74.0-23.3-16.2-10.7-27.1-2.8-13.7-41.4-31.9-8.1-22.9-31.5-26.4-10.8-35.3-33.2
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense4.4-24.63.224.237.579.2-12.639.628.628.623.33.726.248.325.413.236.066.024.812.539.238.9

us-gaap:TemporaryEquityOtherChanges

us-gaap:TemporaryEquityOtherChanges


Temporary
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-8.779-8.268-2.152203.862-5.579-9.523-1.716-1.424-5.54731
Percentage of TemporaryEquityOtherChanges100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockAcquiredAverageCostPerShare


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value681.49613.36-4.92532.590707.8425.98759.7658.09621.199.78602.24582.92606.43.11537.147.52517.40471.152.12468.11475.97451.775.72421.89410.43390.100376.49351.82
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod

us-gaap:TreasuryStockValueAcquiredCostMethod


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value356380690.032443219128020945214217.5488.5122.40.05351152132678626594-0.0110.08.831
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-09-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value356369441912804521421
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-03-312020-06-302020-03-312019-06-302019-03-312018-03-312017-09-302017-03-312016-03-312015-03-312014-03-312012-06-302012-03-312011-09-302011-06-302011-03-312010-06-30
Value9576.0015439.003981.029381.042310.06770.012298.00019789.028160.010749.05352.07161.09788.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.00.0100.00.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0

y:AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities

y:AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12111111129.568108.0958.7956.97.3095.5
Percentage of AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12111111129.610.08.18.86.97.25.5
Percentage of AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities99.8100.299.599.8100.1100.399.6100.1100.1100.098.5100.0

y:AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11111111119.29.77.78.46.77.45.8
Percentage of AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities93.398.497.798.098.496.296.695.195.597.1101.2105.5

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.80.20.20.20.20.40.30.40.40.2-0.2-0.3
Percentage of AmortizationExpenseIncomeOfIntangibleAssetsAndLiabilities6.41.71.81.81.74.23.04.94.52.9-2.7-5.5

y:CommissionsBrokerageAndOtherUnderwritingExpenses

y:CommissionsBrokerageAndOtherUnderwritingExpenses


Commissions
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
Value523476473464410441444449444420401407402406430398413
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:CommissionsBrokerageAndOtherUnderwritingExpenses us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Commissions
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
Value523476473464410441444449444420401407402406430398413
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:CommissionsBrokerageAndOtherUnderwritingExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:InsuranceSegment


Commissions
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
Value98100939386918888908483828484908991
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses18.821.019.620.021.220.819.919.720.320.020.920.320.920.721.122.422.1

us-gaap:OperatingSegments, y:ReinsuranceSegment


Commissions
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
Value425376380371323349356360353336317324318322340308322
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses81.279.080.480.078.879.280.080.379.780.079.179.779.179.379.077.677.9

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Commissions
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
Value523476473464410441444449444420401407402406430398413
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:CommissionsBrokerageAndOtherUnderwritingExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:OperatingSegments, y:InsuranceSegment, y:CapSpecialtyIncorporated


Commissions
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
Value3735363434333632323031303030292827
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses7.27.57.77.48.37.78.37.37.37.37.97.47.67.66.87.16.6

us-gaap:OperatingSegments, y:InsuranceSegment, y:RsuiGroupIncorporated


Commissions
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
Value6064565852575255575351525353505053
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses11.613.512.012.712.913.111.712.413.012.712.913.013.413.211.712.612.8

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Commissions
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value266271259226244247252250232233211223228240203234
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses56.057.255.855.255.455.756.256.355.358.351.955.556.355.851.256.6

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Commissions
Period End2021-06-302020-06-30
Value301226
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses57.655.2

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Commissions
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
Value123109109112961051081081031038311394939910587
Percentage of CommissionsBrokerageAndOtherUnderwritingExpenses23.622.923.124.223.623.924.424.123.424.720.927.823.622.923.126.421.2

y:ForeignCurrencyTranslationGainLossUnrealized

y:ForeignCurrencyTranslationGainLossUnrealized


Foreign
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value16-44.344926027-80.5359-47.7977.44-1.07-20.637-15.224-83.371359.474476619-76.61512-45.729-45.552-40.0-25.68848-154.741-89.459-120.31218188248-11.848-78.9553482-56.5124
Percentage of ForeignCurrencyTranslationGainLossUnrealized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:GainOnPartialSettlementAndRemeasurementOfFairValueOfOutstandingContingentConsiderationLiabilities us-gaap:BusinessAcquisition, us-gaap:StatementBusinessSegments

y:GainOnPartialSettlementAndRemeasurementOfFairValueOfOutstandingContingentConsiderationLiabilities

y:Concord, y:AlleghanyCapitalCorporation


Gain
Period End2020-12-312020-09-30
Value1.213
Percentage of GainOnPartialSettlementAndRemeasurementOfFairValueOfOutstandingContingentConsiderationLiabilities100.0100.0

y:GainOnReductionOfContingentConsiderationLiabilities

y:GainOnReductionOfContingentConsiderationLiabilities


Gain
Period End2020-09-302020-06-302020-03-31
Value005000000.0
Percentage of GainOnReductionOfContingentConsiderationLiabilities0.00.0100.0

y:GainOnReductionOfContingentConsiderationLiabilities dei:LegalEntity

y:PrecisionCuttingTechnologiesInc


Gain
Period End2020-12-312020-09-302020-06-302020-03-31
Value0005000000.0
Percentage of GainOnReductionOfContingentConsiderationLiabilities0.00.00.0100.0

y:GeneralAndAdministrativeExpenseAccrualAdjustment

y:GeneralAndAdministrativeExpenseAccrualAdjustment


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value209.558311218-14.3077.218222519-25.26619147.78520-4.68914169.02210
Percentage of GeneralAndAdministrativeExpenseAccrualAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:GeneralAndAdministrativeExpenseAccrualAdjustment us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


General
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
Value1910301218-12.37.5202418-21.617138.118-3.21316
Percentage of GeneralAndAdministrativeExpenseAccrualAdjustment98.3105.798.394.097.486.0103.993.493.294.585.593.294.2104.092.768.294.495.4

us-gaap:OperatingSegments


General
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.4-0.50.60.80.5-2.0-0.31.51.81.1-3.51.30.8-0.31.5-1.50.80.80.00.3
Percentage of GeneralAndAdministrativeExpenseAccrualAdjustment2.0-5.21.96.22.714.0-4.26.76.95.713.96.85.7-3.97.432.05.64.70.02.8

y:GeneralAndAdministrativeExpenseAccrualAdjustment us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


General
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
Value0.4-0.50.60.80.5-2.0-0.31.51.81.1-3.51.30.8-0.31.5-1.50.80.8
Percentage of GeneralAndAdministrativeExpenseAccrualAdjustment2.0-5.21.96.22.714.0-4.26.76.95.713.96.85.7-3.97.432.05.64.7

y:GrossRealizedGainsDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities

y:GrossRealizedGainsDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value21202521285924121312
Percentage of GrossRealizedGainsDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:GrossRealizedLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities

y:GrossRealizedLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8.48.0144.66646518.71.27.7
Percentage of GrossRealizedLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:InvestmentIncome

y:InvestmentIncome


Investment
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
Value9999105109109119122130127119107106104102105104102
Percentage of InvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities

y:NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12121116-38.113-27.3043.957124.442
Percentage of NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-0.11.5101.1-44.4-37.0-13.6
Percentage of NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities-0.811.695.46.6116.5-284.049.8

us-gaap:OperatingSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value13110.5156.350-13.73.9124.4
Percentage of NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities100.488.24.493.1-16.5383.850.298.6100.499.1

y:NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.20.90.213164.90.7-0.20.20.3
Percentage of NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities1.57.01.883.0-43.037.6-2.6-5.11.66.8

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value12100.31.7-10.145-14.44.1124.1
Percentage of NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities98.981.22.610.126.5346.252.7103.698.892.3

y:NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1212104.6-9.945189.8124.4
Percentage of NetRealizedGainsLossesDuringPeriodExcludingChangeInFairValueOfEquitySecuritiesAndCreditLossesForAvailableForSaleSecurities99.799.888.427.526.0346.2-69.2247.7100.499.1

y:OtherChangesInLossReservesNetOfReinsuranceRecoverables

y:OtherChangesInLossReservesNetOfReinsuranceRecoverables


Other
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-302017-12-312016-12-31
Value-1.70.00.9-1.8-0.3-0.8-293.0-0.8
Percentage of OtherChangesInLossReservesNetOfReinsuranceRecoverables100.00.0100.0100.0100.0100.0100.0100.0

y:PartnershipsAndOtherInvestmentIncomeLoss

y:PartnershipsAndOtherInvestmentIncomeLoss


Partnerships
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4.942242211-10.31115131.5
Percentage of PartnershipsAndOtherInvestmentIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:PaymentsForProceedsFromMortgageNotesReceivable

y:PaymentsForProceedsFromMortgageNotesReceivable


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
Value-96.515-30.618-21.6424.8814.345-3.551-19.8241414-0.029-19.3570.117315.5698.66413162479100134101
Percentage of PaymentsForProceedsFromMortgageNotesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:PercentageOfDebtSecurities

y:PercentageOfDebtSecurities


Percentage
Period End2020-12-312020-09-30
Value099.0
Percentage of PercentageOfDebtSecurities0.0100.0

y:PercentageOfDebtSecurities us-gaap:ExternalCreditRatingByGrouping

y:LowestOfThreeRatingAgenciesAAARating


Percentage
Period End2020-12-312020-09-30
Value0.412.663
Percentage of PercentageOfDebtSecurities0.012.8

y:LowestOfThreeRatingAgenciesAARating


Percentage
Period End2020-12-312020-09-30
Value1.646.153
Percentage of PercentageOfDebtSecurities0.046.6

y:LowestOfThreeRatingAgenciesARating


Percentage
Period End2020-12-312020-09-30
Value-2.022.053
Percentage of PercentageOfDebtSecurities0.022.3

y:LowestOfThreeRatingAgenciesBBBRating


Percentage
Period End2020-12-312020-09-30
Value0.514.862
Percentage of PercentageOfDebtSecurities0.015.0

y:LowestOfThreeRatingAgenciesBelowBBBOrNotRatedRating


Percentage
Period End2020-12-312020-09-30
Value-0.53.269
Percentage of PercentageOfDebtSecurities0.03.3

y:PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses us-gaap:ExternalCreditRatingByGrouping

y:PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses

y:LowestOfThreeRatingAgenciesAAARating


Percentage
Period End2021-06-302021-03-312020-03-31
Value1.713.50.158
Percentage of PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses100.0100.0100.0

y:LowestOfThreeRatingAgenciesAARating


Percentage
Period End2021-06-302021-03-312020-03-31
Value0.646.80.404
Percentage of PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses35.3346.7255.7

y:LowestOfThreeRatingAgenciesARating


Percentage
Period End2021-06-302021-03-312020-03-31
Value-1.120.40.255
Percentage of PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses-64.7151.1161.4

y:LowestOfThreeRatingAgenciesBBBRating


Percentage
Period End2021-06-302021-03-312020-03-31
Value-1.116.20.148
Percentage of PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses-64.7120.093.7

y:LowestOfThreeRatingAgenciesBelowBBBOrNotRatedRating


Percentage
Period End2021-06-302021-03-312020-03-31
Value-0.13.10.035
Percentage of PercentageOfDebtSecuritiesBeforeAllowanceForCreditLosses-5.923.022.2

y:RevenuePercentage us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments, us-gaap:TimingOfTransferOfGoodOrService

y:RevenuePercentage

us-gaap:OperatingSegments, y:AlleghanyCapitalCorporationSegment, y:NonIndustrialSegment, us-gaap:TransferredOverTime


Revenue
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
Value55.063.0-7.054.00.740.82-0.010.710.770.66-0.020.60.70.71
Percentage of RevenuePercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:UnderwritingIncomeLossBeforeTax

y:UnderwritingIncomeLossBeforeTax


Underwriting
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1731616-81.3-39.5-24.4-199.33211484-249.2-140.096130137-650.4951011011113715013094115126125140110118986178181-222.01661751008.70.2-2.843
Percentage of UnderwritingIncomeLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:UnderwritingIncomeLossBeforeTax us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Underwriting
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
Value1731616-81.3-39.5-24.4-199.33211484-249.2-140.096130137-650.4951011011113715013094115126125140110118986178181
Percentage of UnderwritingIncomeLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:UnderwritingIncomeLossBeforeTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, y:InsuranceSegment


Underwriting
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
Value491151-57.9-9.254-36.4263944-40.432263241-175.53348233725543737224245403528125.818
Percentage of UnderwritingIncomeLossBeforeTax28.570.1307.871.223.3-223.418.381.733.952.816.2-23.127.824.530.227.034.747.322.633.867.836.428.439.719.333.936.228.832.124.112.89.423.2

us-gaap:OperatingSegments, y:ReinsuranceSegment


Underwriting
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
Value1245.0-34.500000000000014-23.4-30.3-78.9-162.96.07540-208.8-172.4699895-474.962537874129593569383801007490865660
Percentage of UnderwritingIncomeLossBeforeTax71.529.9-207.828.876.7323.481.718.366.147.283.8123.172.275.569.873.065.352.777.466.232.263.671.660.380.766.163.871.267.975.987.290.676.8

us-gaap:OperatingSegments, y:ReinsuranceSegmentAndInsuranceSegment


Underwriting
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
Value1731616-81.3-39.5-24.4-199.33211484-249.2-140.096130137-650.495101
Percentage of UnderwritingIncomeLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

y:UnderwritingIncomeLossBeforeTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:OperatingSegments, y:InsuranceSegment, y:CapSpecialtyIncorporated


Underwriting
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
Value0.70.40.2-2.9-2.0-1.1-27.0-0.50.10.12.01.61.61.61.10.71.31.30.20.71.82.11.7-1.3-5.80.40.9-0.8-7.0-3.7
Percentage of UnderwritingIncomeLossBeforeTax0.42.41.23.65.14.513.5-1.50.10.1-0.8-1.11.71.20.8-0.11.41.30.20.64.81.41.3-1.4-5.00.30.7-0.6-6.4-3.1

us-gaap:OperatingSegments, y:InsuranceSegment, y:RsuiGroupIncorporated


Underwriting
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
Value481150-55.0-7.255-9.4273844-42.430253040-176.73147213824543741324749474636472026
Percentage of UnderwritingIncomeLossBeforeTax28.167.7306.667.718.2-227.94.783.233.952.717.0-22.026.223.329.627.233.346.621.534.065.736.029.043.827.837.139.733.741.831.048.532.733.0

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndOtherReinsuranceSegments


Underwriting
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value66232011-47.0231212-2.6212.0261357-20.62.5-20.8-7.1221516235.30.1-1.7152218-17.91.7-30.0-17.0
Percentage of UnderwritingIncomeLossBeforeTax397.6141.0-25.1-28.4192.6-11.737.811.1-3.1-8.6-1.426.910.241.63.22.6-20.5-7.020.141.010.917.95.60.1-1.312.116.317.0-15.11.7-48.5-21.6

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:CasualtyAndSpecialtyReinsuranceSegments


Underwriting
Period End2021-06-302020-06-30
Value8211
Percentage of UnderwritingIncomeLossBeforeTax47.6-28.4

us-gaap:OperatingSegments, y:ReinsuranceSegment, y:PropertyReinsuranceSegment


Underwriting
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
Value41-61.4-57.9-43.8-41.5-31.9-186.2-6.46342-230.2-174.4438538-454.359748651-3.37970519285647756107848677
Percentage of UnderwritingIncomeLossBeforeTax23.9-367.7-348.853.9105.1130.793.4-19.555.050.392.4124.645.365.228.169.862.673.284.446.1-8.852.753.654.780.667.551.754.951.091.085.5139.298.4

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedInvestmentIncomeReceivable


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value86908894919496100101999198979710510710810711311011211411511912412613613714814114614717015716516416316728
Percentage of AccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesRealEstate

us-gaap:AllowanceForLoanAndLeaseLossesRealEstate


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value600000.01600000.01400000.01500000.01300000.02000000.0
Percentage of AllowanceForLoanAndLeaseLossesRealEstate100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value5835287627316864244455054012299881107130237244231187180438477327221247208344299278166
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:InvestmentType

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4133454033152335239.52.82.32.59.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax7.16.35.95.54.93.75.26.95.74.12.82.82.33.8

us-gaap:DomesticCorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2151882892752611031551551205313191761
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax36.935.738.037.738.024.434.830.730.023.313.323.916.725.9

us-gaap:ForeignCorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value353455484214324135229.1101224
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax6.06.57.36.66.23.47.28.28.89.89.213.112.010.3

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value20203333332716292418125.59.311
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax3.43.94.44.64.96.53.75.86.18.112.46.88.74.7

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1501281681511411171181301128444109
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax25.724.422.120.720.627.626.625.828.036.744.946.2

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value52587880828656554025103.03.36.3
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax8.911.110.311.012.020.512.611.010.111.110.43.73.12.6

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3125445253531926176.32.40.10.61.7
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax5.34.75.87.17.812.54.35.34.32.72.40.10.60.7

y:OtherAssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value38384749375.62432279.44.42.94.913
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax6.67.36.26.85.51.35.66.36.94.14.43.64.65.8

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value499639771233753229286317018915712953596799124305394145100108376469239
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:InvestmentType

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.16.87.61225431.40.10.62.36.49.17.42.3
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.37.019.215.720.311.74.30.32.13.63.74.84.74.3

us-gaap:DomesticCorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value10233.59.69.5692.33.55.3125940419.7
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax22.023.98.812.47.718.47.011.718.419.234.721.326.618.2

us-gaap:ForeignCorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4.15.90.72.46.0322.94.81.85.51820196.5
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax8.46.11.83.14.98.78.816.16.28.711.010.812.112.2

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4.66.90.50.40.50.71.60.40.51.13.49.35.74.7
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax9.47.11.30.50.40.24.91.31.71.72.04.93.68.8

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312017-12-31
Value1.49.60.63.51.82.91.30.11.17.26.6
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax2.99.91.54.51.50.84.00.31.74.212.4

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value10190.51.00.60.20.81.23.07.71435264.6
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax22.220.01.31.30.50.12.44.010.412.18.718.616.98.6

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8.4151.51.00.30.22.81.53.01322403317
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax17.116.43.81.30.20.18.55.010.420.513.121.620.933.0

y:OtherAssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6.89.2244779226191814203810.06.81.3
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax13.89.562.461.364.560.260.161.450.332.422.55.34.32.4

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value1533114514148981493114395133201379814012137561311311895121791220612065125361302713205129641292713229132571338513529143821446514363143641455614875
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:ConsolidatedEntities

srt:ParentCompany


Available
Period End2020-12-312019-12-312018-12-312017-12-31
Value471790.0926
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis0.31.30.00.2

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:InvestmentType

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value869850852855862870849786766581536530545545
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.75.95.75.76.06.56.25.65.64.44.54.44.54.3

us-gaap:DomesticCorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value31283226326236973758338632063174297527082431246424322381
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis20.422.221.924.826.125.423.222.721.620.720.420.219.919.0

us-gaap:ForeignCorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value12601280126812601252131113481417140314041363142814181481
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis8.28.88.58.48.79.89.810.110.210.711.511.711.611.8

us-gaap:ForeignGovernmentDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8178608467677336696757287597629399059291000
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis5.35.95.75.15.15.04.95.25.55.87.97.47.68.0

us-gaap:MunicipalBonds


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value245224592489241222462158219022182335238621773578
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis16.016.916.716.215.616.215.915.817.018.218.328.5

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1906193825332432206316131785188118781958139211471184993
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis12.413.417.016.314.312.112.913.413.714.911.79.49.77.9

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value202415161317118711027931198126212421189104210691026963
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis13.210.48.88.07.76.08.79.09.09.18.88.88.47.7

y:OtherAssetBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value28722382232823192375251725442543239621212013204118661592
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis18.716.415.615.516.518.918.418.217.416.216.916.815.312.7

us-gaap:AvailableForSaleSecurities

us-gaap:AvailableForSaleSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312011-09-302011-06-302010-12-31
Value16243155401633216216160691387315126154561518414552127171276112628126771739917581173811699316871173721710717000169771790418310182371812918453186311836618350180251765617789455047264622
Percentage of AvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecurities us-gaap:InvestmentType

us-gaap:ShortTermInvestments


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value37959571463611195369149681054127289369047261157854770017257787526214933653626015137157926159261317
Percentage of AvailableForSaleSecurities2.33.84.43.97.03.96.06.36.98.77.05.43.74.83.33.14.010.24.64.33.62.92.22.03.32.83.94.33.35.07.2

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value58352876273168642444550540122998811071301170907778589512757724634573576690839829740592
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value499639771233753229286317018915712957756910316310813615023224414852145116241
Percentage of AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesAmortizedCost

us-gaap:AvailableForSaleSecuritiesAmortizedCost


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
Value15710151091561215568155151385614713149801481114385127891287012678126761628516750166721650616522167231651816516166361757117768174501744617829178631787417998177101748817365173951760117441168554411442743754352
Percentage of AvailableForSaleSecuritiesAmortizedCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.