PRA


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

Table of contents



us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:BenefitsLossesAndExpenses

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense

us-gaap:GainLossOnInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

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

us-gaap:NetIncomeLoss
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementEquityComponents

us-gaap:NetInvestmentIncome
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:OperatingExpenses

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

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

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:PremiumsEarnedNet
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ProductOrService
us-gaap:StatementBusinessSegments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:RealizedInvestmentGainsLosses

us-gaap:Revenues

us-gaap:Assets
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:BalanceSheetLocation, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:BalanceSheetLocation

us-gaap:Liabilities
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

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

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:EquitySecuritiesFvNi
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities

us-gaap:LongTermDebt
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

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

us-gaap:CommonStockValue
us-gaap:ConsolidatedEntities

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:TaxCreditCarryforward, us-gaap:TaxPeriod
pra:DeferredIncomeTaxCredits

pra:EquityInEarningsLossOfUnconsolidatedSubsidiaries

pra:ExternalCapitalContributionReceivedReturnOfCapitalForSegregatedPortfolioCells
us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
pra:GrossPremiumsEarned
us-gaap:StatementBusinessSegments

pra:HistoricTaxCreditsInvestmentsandOtherTaxBenefitsAmount

pra:ImpairmentLossDebtSecuritiesNoImpairmentPreviouslyRecognized

pra:ImpairmentLossDebtSecuritiesPortionRecognizedinEarnings

pra:ImpairmentLossesInvestments

pra:ImpairmentLossesInvestmentsPortionInOtherComprehensiveLossBeforeTaxPortionAttributableToParent

pra:IncomeLossfromHistoricalProjectsEquityMethodInvestments

pra:IncomeTaxExpenseBenefitExcludingBusinessAcquisitionTaxEffect
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

pra:IncreaseDecreaseInReinsuranceRelatedAssetsAndLiabilities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
pra:IncreaseDecreaseInUnrealizedAppreciationDepreciation

pra:OtherInvestmentsRealizedGainLoss

pra:OtherNetRealizedInvestmentGainLoss

pra:PaymentsForFundingOfTaxCreditLimitedPartnerships

pra:PaymentsForProceedsFromInvestmentInUnconsolidatedSubsidiaries

pra:PaymentsToAcquireEquitySecuritiesFVNI

pra:PremiumReceivableAllowanceForCreditLossIncreaseFromAcquisition

pra:RentalIncomeOwnedProperties
us-gaap:StatementBusinessSegments
pra:ReturnOfDepositAssets

pra:ReturnOnInvestedCapitalFromUnconsolidatedSubsidiaries

pra:SegmentProfitLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

pra:SegregatedPortfolioCellsDividendExpenseIncome
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

pra:SegregatedPortfolioCellsIncomeTaxExpenseBenefit
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:Range, us-gaap:AwardType
pra:ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutRate

pra:UnderwritingPolicyAcquisitionAndOperatingExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

pra:UnsettledSecurityTransactionsNet

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionsProFormaRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:ConsolidationItems

us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount
us-gaap:BusinessAcquisition
us-gaap:ConsolidationItems
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual
us-gaap:StatementBusinessSegments
us-gaap:CededPremiumsEarned
us-gaap:FinancialInstrument, us-gaap:InternalCreditAssessment
us-gaap:ConcentrationRiskPercentage1

us-gaap:CurrentIncomeTaxExpenseBenefit

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesTradingRealizedGainLoss

us-gaap:DebtSecuritiesTradingUnrealizedGainLoss
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DepreciationAmortizationAndAccretionNet
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DividendsCommonStock
us-gaap:StatementEquityComponents

us-gaap:DividendsCommonStockCash

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:IncomeStatementLocation
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:IncomeStatementLocation

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:FinancialInstrument

us-gaap:GainLossOnSaleOfOtherInvestments

us-gaap:GoodwillImpairmentLoss
us-gaap:ConsolidationItems
us-gaap:ReportingUnit

us-gaap:IncomeLossFromAffordableHousingProjectsEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInUnearnedPremiums
us-gaap:AwardType
us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
us-gaap:InvestmentType
us-gaap:InterestAndDividendIncomeOperating

us-gaap:InvestmentIncomeInvestmentExpense

us-gaap:LeaseCost

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

us-gaap:LifeInsuranceCorporateOrBankOwnedChangeInValue

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses

us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold

us-gaap:OtherUnderwritingExpense

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromShortTermInvestments

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherProductiveAssets

us-gaap:PremiumReceivableCreditLossExpenseReversal

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance
us-gaap:ProductOrService
us-gaap:PremiumsWrittenNet

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType
us-gaap:ProceedsFromLinesOfCredit

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForTradingSecurities

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RepaymentsOfSecuredDebt
us-gaap:LongtermDebtType
us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:StockIssuedDuringPeriodValueOther
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:SubleaseIncome

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense
us-gaap:ProductOrService
us-gaap:StatementBusinessSegments

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
us-gaap:StatementBusinessSegments

us-gaap:UnrealizedGainLossOnHybridInstrumentNet

pra:AmountDueFromReinsurersNet
us-gaap:FairValueByMeasurementFrequency
pra:AssetsFairValueDisclosureIncludingNAVValueNotWithinFairValueHierarchy
us-gaap:BusinessAcquisition
pra:BusinessCombinationFairValuesAdjustmentsOnGrossReserve
us-gaap:BusinessAcquisition
pra:BusinessCombinationFairValuesAdjustmentsOnReinsuranceRecoverables
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedOperatingLeaseLiabilities
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBusinessOwnedLifeInsurance
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityInvestmentsAvailableForSale
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFixedMaturitiesAvailableForSale
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentInUnconsolidatedSubsidiaries
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherInvestments
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilities
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPremiumReceivables
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPrepaidReinsurancePremiums
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnPaidLossesAndLossAdjustmentExpenses
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnUnpaidLossesAndLossAdjustmentExpenses
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReinsurancePremiumsPayable
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReserveForLossesAndLossAdjustmentExpenses
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermInvestments
us-gaap:BusinessAcquisition
pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnearnedPremiums

pra:BusinessOwnedLifeInsuranceCost
us-gaap:BusinessAcquisition

pra:ConsolidatedNetAssetsHeldAtDomesticInsuranceSubsidiaries

pra:CreditLossesRecognizedInEarningsInWhichAPortionOfLossesAreRecognizedInComprehensiveIncomeLossCreditLossesOnDebtSecuritiesHeld
us-gaap:LongtermDebtType
pra:DebtLongtermandShorttermCombinedAmountGross

pra:DeferredTaxAssetsBasisDifferencesInvestments

pra:DeferredTaxAssetsOperatingLeaseLiability

pra:DeferredTaxAssetsUnpaidLossDiscount

pra:DeferredTaxLiabilitiesForeignRateDifferential

pra:DeferredTaxLiabilitiesRightOfUseAssets

pra:DeferredTaxLiabilitiesUnpaidLossDiscount

pra:DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleAndTradingSecurities

pra:EarnedButUnbilledPremiums

pra:IncomeTaxRefundCARESAct

pra:InvestmentInUnconsolidatedSubsidiaries
us-gaap:ConsolidatedEntities
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:Range, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
pra:InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:ConsolidatedEntities
pra:InvestmentsInSubsidiaries

pra:InvestmentsWithExposureToLIBOR

pra:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour
us-gaap:Range
pra:MajorReinsurerIndividualBalanceAmount
us-gaap:FinancialInstrument
pra:NumberOfDebtSecuritiesInUnrealizedLossPositionAsPercentageOfDebtSecurities

pra:OtherInvestmentsFairValueDisclosure
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
pra:OtherInvestmentsMeasurementInput
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:ValuationTechnique
pra:OtherLiabilitiesMeasurementInput

pra:OtherLiabilitiesNotDetailed
us-gaap:ConsolidatedEntities
pra:OtherShareholdersEquityIncludingUnrealizedGainsOrLossesOnSecuritiesOfSubsidiaries

pra:PercentOfInvestmentsWithExposureToLIBOR

pra:PolicyLiabilities
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationThereafter
us-gaap:BusinessAcquisition
us-gaap:BalanceSheetLocation
pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments
pra:ProportionOfCapitalProvidedToSupportSegment
us-gaap:FinancialInstrument
pra:SecondGreatestUnrealizedLossPosition

pra:SegregatedPortfolioCellDividendsPayable

pra:ShortdurationInsuranceContractsLiabilityforUnpaidClaimsandClaimsAdjustmentExpenseLossPortfolioTransfer
us-gaap:FinancialInstrument
pra:SingleGreatestUnrealizedLossPosition

pra:StockRepurchaseOrDebtRepaymentRemainingAuthorizedAmount

us-gaap:AlternativeInvestment
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument, us-gaap:InvestmentType

us-gaap:AociTaxAttributableToParent
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:AssetsHeldByInsuranceRegulators

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue
us-gaap:FinancialInstrument
us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPercentageOfVotingInterestsAcquired
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh

us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets
us-gaap:BusinessAcquisition, us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets

us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument
us-gaap:DebtInstrumentFaceAmount
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByMeasurementBasis, us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:DebtInstrumentInterestRateEffectivePercentage
us-gaap:LongtermDebtType
us-gaap:LongtermDebtType, us-gaap:VariableRate
us-gaap:BusinessAcquisition, us-gaap:DebtInstrument
us-gaap:DebtInstrumentUnamortizedPremium

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DebtSecuritiesAvailableForSaleMeasurementInput

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredCompensationLiabilityCurrentAndNoncurrent
us-gaap:BusinessAcquisition, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:DeferredCompensationPlanAssets
us-gaap:BusinessAcquisition

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredTaxAssetsGoodwillAndIntangibleAssets

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsForeign

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:BusinessAcquisition
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:FinancialInstrument
us-gaap:DepositAssets
us-gaap:StatementBusinessSegments
us-gaap:BalanceSheetLocation, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetNotionalAmount

us-gaap:DividendsPayableCurrentAndNoncurrent
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:DueToAffiliateCurrentAndNoncurrent

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquitySecuritiesFvNiCost
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType
us-gaap:EquitySecuritiesFvNiMeasurementInput
us-gaap:FinancialInstrument, us-gaap:InvestmentType
us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
us-gaap:FinancialInstrument

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:IncomeStatementLocation
us-gaap:IncomeTaxExaminationPenaltiesAndInterestAccrued

us-gaap:IncomeTaxReceivable

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:Investments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:MinimumNetWorthRequiredForCompliance

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:BusinessAcquisition
us-gaap:OperatingLossCarryforwards
us-gaap:IncomeTaxAuthority
us-gaap:TaxPeriod
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwardsValuationAllowance
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherAssetsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementFrequency
us-gaap:OtherCommitments
us-gaap:OtherCommitment
us-gaap:OtherCommitments
us-gaap:OtherCommitmentDueInFourthAndFifthYear
us-gaap:OtherCommitments
us-gaap:OtherCommitmentDueInNextTwelveMonths
us-gaap:OtherCommitments
us-gaap:OtherCommitmentDueInSecondAndThirdYear

us-gaap:OtherIntangibleAssetsNet

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

us-gaap:OtherLongTermInvestments

us-gaap:OtherShortTermInvestments
us-gaap:ConsolidatedEntities

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccounts

us-gaap:PremiumsReceivableAtCarryingValue

us-gaap:PrepaidReinsurancePremiums
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseRemainderOfFiscalYear
us-gaap:BusinessAcquisition
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFour
us-gaap:BusinessAcquisition
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearOne
us-gaap:BusinessAcquisition
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearThree
us-gaap:BusinessAcquisition
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearTwo
us-gaap:BusinessAcquisition
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:PurchaseObligation
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased
us-gaap:PurchaseObligationDueInNextTwelveMonths
us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased, us-gaap:SubsequentEventType
us-gaap:OtherCommitments
us-gaap:QualifiedAffordableHousingProjectInvestmentsCommitment

us-gaap:ReinsurancePayable

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments
us-gaap:ProductOrService

us-gaap:ReinsuranceRecoverablesOnPaidAndUnpaidLosses
us-gaap:StatementBusinessSegments

us-gaap:ReinsuranceRecoverablesOnPaidLosses
us-gaap:StatementBusinessSegments
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearEight
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearNine
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearSeven
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearSix
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTen
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear
us-gaap:ShortdurationInsuranceContractsIncurredButNotReportedIbnrClaimsLiabilityNet
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear

us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:ProductOrService
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndAllocatedClaimAdjustmentExpenseNetNotSeparatelyPresented

us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseAggregateReconcilingItems

us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimAdjustmentExpenseOtherReconcilingItem

us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense

us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments

us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue
us-gaap:InvestmentType

us-gaap:SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts

us-gaap:SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves

us-gaap:SupplementaryInsuranceInformationUnearnedPremiums
dei:LegalEntity, us-gaap:ConsolidatedEntities
us-gaap:SurplusNotes
us-gaap:TaxCreditCarryforward
us-gaap:TaxCreditCarryforwardAmount
us-gaap:TaxCreditCarryforward, us-gaap:TaxPeriod

us-gaap:TradingSecuritiesDebt
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:TradingSecuritiesDebtAmortizedCost

us-gaap:UnamortizedDebtIssuanceExpense

us-gaap:UnearnedPremiums

us-gaap:UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:StatementBusinessSegments
us-gaap:UnusedCommitmentsToExtendCredit
us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition
us-gaap:ValueOfBusinessAcquiredVOBA

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Operating Lease Right Of Use Asset
Liabilities
Dividends Payable Current And Noncurrent
Noncurrent Liabilities
Long Term Debt
Stockholders Equity
Common Stock Value
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Common Stock Shares Outstanding
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four

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 ███████████████████████████████████▁▁▁▁▁▁▁▁0.6330.6330.6320.6320.6320.6320.6310.6310.6310.6310.630.630.630.630.6280.6280.6280.6280.6270.6270.6270.6260.6250.6250.6250.6250.6230.6230.6230.6230.6210.6210.6210.6210.6190.3470.3470.3460.3460.3450.3450.3450.344NANANA
us-gaap:CommonStockSharesOutstanding NANA53.893NANANA53.792NANANA53.637NANANA53.457NANANA53.251NANANA53.101NANANA56.534NANANA61.197NANANA61.624NANANA61.107NANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding █▁54.04853.998NA53.91853.88653.885NA53.85653.82853.808NA53.77353.74153.682NA53.61453.60753.535NA53.45653.42853.346NA54.23255.64556.813NA58.93159.74261.497NA62.10862.04661.963NA30.93830.91630.852NA30.84730.85630.853NA32.04732.72132.764
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic █▁53.96553.918NA53.88953.86453.808NA53.76253.7553.683NA53.6253.6153.515NA53.41353.40253.315NA53.22253.20553.157NA54.00755.44556.592NA58.67659.52461.251NA61.84461.82561.708NA30.67430.65830.589NA30.55730.58330.616NA31.64232.32232.447
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 0.037NANA0.1770.18NANA0.00.0NANA0.00.0080.0NA0.0280.00.0NA0.0NANANANANANANANANANANANANA0.0NA0.00.00.0NA0.00.00.0NA0.00.0NA
us-gaap:EarningsPerShareBasic ▅▄▄▁▃▃▃▄▄▄▃▄▄▄▄▄▄▄▅▄▄▄▄▄▄▄▅▄▄▄▅▅▄▅▅▅▅▅█▅▅▅▇▅▅▅1.710.140.27-2.78-0.34-0.41-1.10.320.210.59-0.460.580.530.220.320.540.370.781.030.640.810.360.660.190.60.671.130.590.840.761.151.020.821.831.651.961.911.824.61.431.81.563.321.611.251.17
us-gaap:EarningsPerShareDiluted ▅▄▄▁▃▃▃▄▄▄▃▄▄▄▄▄▄▄▅▄▄▄▄▄▄▄▅▄▄▄▅▅▄▅▅▆▅▅█▅▅▅▇▅▅▅1.70.140.27-2.78-0.34-0.41-1.10.320.210.59-0.460.580.530.220.320.540.360.771.020.630.810.360.650.190.60.671.120.590.840.761.141.020.811.821.641.941.891.84.561.421.791.553.281.591.231.16
us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare -1e-08NANANA0.00.00.00.00.00.00.00.00.00.0-1e-080.0-1e-08-1e-080.0-1e-08NANANANANANANANANANANANANANANANANANANANANANANANANANA
  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
  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:AllocatedShareBasedCompensationExpense NANANA1.021.0211.011NA0.0031.0921.228NA1.6281.6150.902NA1.0182.7463.346NA1.6453.0982.715NA2.672NANANANANANANANANANANA1.32.92.1NA1.72.01.7NA1.61.5NA
us-gaap:BenefitsLossesAndExpenses ▆▅▅█▆▅▇▅▅▅▅▅▅▅▄▅▄▄▄▄▄▄▄▄▄▄▃▄▄▄▃▃▃▃▂▃▃▃▁▃▃▃▂▃▃▃267.584211.546208.005374.735278.527230.731338.645231.37228.362230.264218.024218.303228.082192.598174.884193.482186.391182.767174.162180.838166.307172.706154.973163.535162.404162.311130.77156.53156.38146.64278.78495.307105.9695.28237.73692.41484.315105.422-1.94499.06298.142106.92734.94112.738100.993110.717
us-gaap:ComprehensiveIncomeNetOfTax ▇▄▅▁▆▃▃▅▅▆▄▅▅▄▅▅▅▆▅▅▆▅▅▅▅▆▆▅▆▆▆▆▄▇▇▆▆▆█▆▆▅▆▆▆▆103.6-25.9721.247-142.82447.941-63.819-61.55324.59834.6157.216-21.25427.26420.327-14.5176.79428.34425.25944.37915.93228.8657.25542.57722.7085.3238.3345.48756.31120.13261.18957.47660.45358.368-12.113105.09687.7178.99165.45558.657148.29166.99679.3243.40248.6678.9372.52251.356
us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense ▇▆▇▇▆▇██▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▄▄▃▂▂▃▃▂▂▁▁▁▁▁▂▂▂▂▁▂▂▂26.64624.92927.03727.01425.34327.28330.09929.08328.04728.10227.32326.63125.65324.89325.70724.50522.91322.623.521.821.621.519.621.119.919.015.716.718.118.215.915.414.413.413.514.014.515.115.115.514.614.415.014.814.7NA
us-gaap:GainLossOnInvestments ▆▆▆▆▇▂▆▅▆█▁▆▅▄▅▆▅▆▆▆▆▄▄▂▅▅▅▄▆▅▇▆▆▇▅▆▅▆▆▄▅▅▆▆▅10.8338.84915.5288.83819.985-28.67312.811.1349.30836.623-46.13912.3732.795-12.517-2.4017.749-2.21913.2816.56115.73710.929-8.352-6.019-36.632-3.8284.8396.995-8.13113.0462.74420.25412.58.47126.686.51513.219-1.54810.67711.642-11.9722.24.1248.53514.712-3.501NA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▆▄▄▁▃▃▂▄▄▅▃▅▄▄▅▅▄▅▅▅▅▄▅▄▅▅▆▅▅▅▆▆▅▇▇▆▅▅█▅▅88.4528.47121.597-147.838-56.785-34.03-89.17810.50411.25938.611-38.54331.02228.1128.43434.23434.97319.18640.23163.51143.51448.49420.68130.92311.39841.01245.52287.22647.30366.06761.409110.45786.67364.845135.184157.68383.5879.55475.149208.33662.91676.687NANANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▄▄▄▁▃▂▃▄▄▃▄▄▃▅▄▄▃▄▄▄▄▃▄▄▄▅▄▅▅▆▅▄▅▇▅▅▅█▅▅▅▇▅▅▅-3.5980.7367.2922.141-38.686-12.076-29.804-6.689-0.2776.961-14.093-0.206-0.311-3.42216.8926.024-0.332-1.2248.6639.685.4131.364-4.0261.1227.8547.70822.11212.52516.12514.67839.59223.31614.39422.33456.41723.47421.10119.50467.73419.21121.59118.96548.4817.34420.12615.129
 us-gaap:IncomeTaxExpenseBenefit us-gaap:BusinessAcquisition pra:NORCALGroup-3.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pra:LloydsSyndicatesNANA0.00.00.0-0.0290.161-0.1610.3040.3040.038-0.3610.00.006-0.0730.061-0.548NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:CorporateNA0.7367.2922.141-38.686-12.047-29.965-6.528-0.0276.657-14.1310.155-0.311-3.42816.9655.9630.216-1.21710.5278.3284.6011.28-4.5140.997.2347.70822.11212.52516.125NANANANANANANANANANANANANANANANANA
us-gaap:InterestExpense █▅▆▆▆▇▆▇▇▇█▆▆▆▇▇▇▇▆▆▆▆▆▆▆▆▅▆▆▆▃▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂5.1763.2123.7783.8813.7144.1293.7864.2744.2474.334.8553.5993.9583.7054.4424.1244.1454.1333.7473.7483.8513.6863.6183.6373.713.6313.3873.6063.5213.571.670.3220.3920.3710.1790.350.8260.8250.8330.9320.9180.7950.8210.8320.8270.813
us-gaap:NetIncomeLoss ▇▅▅▁▄▄▃▅▅▅▄▅▅▅▅▅▅▆▆▅▆▅▅▅▅▆▆▅▆▆▆▆▆▇▇▆▆▆█▆▆▆▇▆▆▆92.057.73514.305-149.979-18.099-21.954-59.37517.19311.53631.65-24.4531.22828.42311.85617.34228.94919.51841.45554.84833.83443.08119.31734.94810.27633.15837.81465.11434.77849.94246.73170.86463.35750.451112.85101.26660.10658.45355.645140.60243.70555.09647.693102.05351.05240.38138.112
us-gaap:NetInvestmentIncome ▂▁▁▂▂▃▄▄▄▃▄▄▃▃▄▄▃▄▄▄▄▄▅▅▅▅▆▇▆▆▆▇▇▆▇▇▇▇▇▇███▇██17.41715.01716.12116.92418.12420.8323.23123.68123.53922.81824.20723.26622.38422.02726.0723.72922.67723.18624.72825.26124.58325.4426.45926.94227.95527.30432.76932.8330.22529.73229.98333.88933.26732.12634.18233.9134.5133.49234.38334.11636.29736.16136.03235.63937.08137.628
 us-gaap:OperatingExpenses us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased pra:DataAnalyticsServicesNANA0.71.21.21.21.21.41.31.01.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▃▅▅█▂▄▅▆▆▅▄▄▃▄▄▅▅▂▄▅▆▄▄▃▅▄▄▅▅▄▄▁▄▄▅▅▅11.55-33.7056.9427.15566.04-41.865-2.1797.40523.07425.5663.196-3.964-8.097-26.373-10.548-0.6055.7412.924-38.916-4.97414.17423.26-12.241-4.953-24.8287.673-8.803-14.64611.24710.745-10.412-4.989-62.564-7.754-13.55618.8857.0023.012NANANANANANANANA
us-gaap:OtherIncome ▃▃▁▂▂▃▂▃▃▃▃▃▃▃▃▁▃▂▂▂▃▃▁▃▂▃▃▂▃▃▃▂▂▂▂▂▂▂▂█▂▃▃▂▂▃2.4582.0050.8021.7231.6952.2511.8012.5482.7772.0952.6782.3882.0442.7232.9330.512.251.8211.8451.4282.1812.3540.7232.7591.5762.1692.3431.8082.1542.0942.2461.8041.6871.8131.8991.5291.8681.8091.8217.4711.6852.5872.2221.7641.6832.321
us-gaap:PolicyholderBenefitsAndClaimsIncurredNet ▆▅▅▅▇▆█▆▆▆▅▅▆▅▄▅▅▅▄▅▄▄▄▄▄▄▄▄▄▄▃▃▃▃▂▃▃▃▁▃▃▃▂▄▃▄181.852149.785140.035145.581210.999164.832264.107161.614168.44159.755154.09147.605161.728129.786105.1129.356115.55119.151107.293118.082106.899110.95592.827108.806103.939105.1475.44199.22298.91389.50834.88961.63770.60957.6265.00956.62148.08470.199-35.66463.17664.35370.423-5.92179.81168.52478.701
us-gaap:PremiumsEarnedNet █▂▂▃▄▄▅▅▄▄▄▄▆▂▁▂▁▁238.993187.358187.007194.559207.293203.855214.446215.788209.149208.149202.033206.07223.591187.159182.972192.303180.353182.903NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RealizedInvestmentGainsLosses us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName pra:NBPrivateEquityCreditOpportunitiesFundLPNA14.587NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues █▄▅▅▅▃▆▆▆▇▂▆▇▃▄▅▄▅▅▅▄▃▂▂▃▄▄▃▅▄▃▂▂▃▃▂▁▂▄▁▂▂▂▂▁▁281.628220.017229.602226.897221.742196.701249.467241.874239.621268.875179.481249.325256.194201.032209.118228.455205.577222.998237.673224.352214.801193.387185.896174.933203.416207.833217.996203.833222.447208.051192.913181.486170.805194.974195.419175.994163.869180.571206.392161.978174.829173.585185.473181.134161.5163.958
  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 █▁▁▁▂▂▂▂▂▂▁▁▁▁▂▂▂▂▃▃▃▂▂▂▃▃▃▄▄▄▃▃▃▄▂▃▃▃▃▃▂▂▂6358.1874674.5384654.8034692.4974783.5554730.854805.5994824.3594786.1184717.1084600.7264653.4424583.4644678.9244929.1974925.1544861.7164872.6415065.1815015.7754976.8374894.4994908.1634963.0045001.4915114.085169.165325.9975397.6945405.5045150.8914963.8325112.0455218.7464876.5784972.6664995.7595033.3284998.8784988.8094926.6074905.1794875.056NANANA
us-gaap:Liabilities █▃▃▃▃▃▃▃▃▃▂▂▂▃▃▂▂▂▃▂▂▂▂▂▂▂▂▂▂▂▁▁▂▂▁▁▁▂▂▂▂▂▂4934.1473353.2223305.5933362.6043309.1653303.3413293.6863234.9013204.5623155.2123077.7243066.5473008.8483109.7553334.4023074.2643023.623046.9553266.4792973.6082948.6422909.9852949.8092956.2142944.3072985.4363011.2163004.7853036.9233053.5222756.4772590.4712775.2572857.7032605.9982623.2682717.6162816.5372834.4252967.0462960.2433020.4393019.193NANANA
us-gaap:LiabilitiesAndStockholdersEquity █▁▁▁▂▂▂▂▂▂▁▁▁▁▂▂▂▂▃▃▃▂▂▂▃▃▃▄▄▄▃▃▃▄▂▃▃▃▃▃▂▂▂6358.1874674.5384654.8034692.4974783.5554730.854805.5994824.3594786.1184717.1084600.7264653.4424583.4644678.9244929.1974925.1544861.7164872.6415065.1815015.7754976.8374894.4994908.1634963.0045001.4915114.085169.165325.9975397.6945405.5045150.8914963.8325112.0455218.7464876.5784972.6664995.7595033.3284998.8784988.8094926.6074905.1794875.056NANANA
us-gaap:StockholdersEquity ▂▁▁▁▂▂▂▃▃▃▂▃▃▃▃▄▄▄▄▆▆▅▅▅▆▆▆███████▇█▇▇▆▆▅▅▄▄▄▄1424.041321.3161349.211329.8931474.391427.5091511.9131589.4581581.5561561.8961523.0021586.8951574.6161569.1691594.7951850.891838.0961825.6861798.7022042.1672028.1951984.5141958.3542006.792057.1842128.6442157.9442321.2122360.7712351.9822394.4142373.3612336.7882361.0432270.582349.3982278.1432216.7912164.4532021.7631966.3641884.741855.8631818.2071792.9781757.703
  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:CashAndCashEquivalentsAtCarryingValue ▁▆▆█▇▇▂160.796214.835215.782231.948224.268217.169175.369NANANA80.47187.55966.71543.247134.495119.005117.463101.918117.347128.903145.169197.312241.1201.342151.366203.576197.04248.005210.659296.243129.383279.051119.23494.83118.55197.659132.19120.43130.4125.707101.22659.50450.85148.26445.28748.848
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▅▇▇██▇▆▃▃▂▂▃▂▁▄160.796214.835215.782231.948224.268217.169175.369102.21191.87971.8380.47187.55966.71543.247134.495NANANA117.347NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType us-gaap:BuildingAndBuildingImprovementsNANA26.5NANANA25.7NANANA25.2NANANA24.0NANANA22.9NANANA24.2NANANA23.0NANANA21.6NANANA20.2NANANANANANANANANANANA
us-gaap:PropertyPlantAndEquipmentNet ▁▁▁▁▁▂▁▁▁▁▂▂▂▂▂▂▂▂▂▅▅▅▅▅▆▆▆▆▆▆▇▇▇▇▇▇▆▆▆▆███30.72230.59430.52929.9930.20631.12230.4130.62930.84130.68831.11431.30731.31631.64631.97532.30532.61131.5831.81438.13438.47538.4538.4738.70439.37439.6739.79940.11640.39440.65141.0141.37341.61341.4941.50241.11140.940.38140.43240.76743.25643.60143.951NANANA
us-gaap:Goodwill ▁▁▁▁██████████████████████████▆▆▆▆▆▆▆▆▆▆▆▆▆49.6149.6149.6149.61210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725210.725161.115161.115161.115161.123163.055159.625159.625159.625159.625159.625161.453161.453161.453NANANA
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill NANA25.8NANANA25.8NANANA25.8NANANA25.8NANANA25.8NANANA25.8NANANA25.825.825.825.816.8NANANA14.3NANANA14.3NANANANANANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA57.105NANANA44.387NANANA29.10817.96218.19616.8749.93NANANA10.256NANANA15.097NANANA-18.818NANANA1.757NANANA-14.585NANANA30.989NANANA56.862NANANA
 us-gaap:DeferredTaxAssetsLiabilitiesNet us-gaap:ConsolidatedEntities srt:SubsidiariesNANA0.5NANANA0.6NANANA0.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset █▇▇▇▇▇███▇▁21.6718.21919.01318.92519.19819.72221.07420.56320.37417.2270.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EquitySecuritiesFvNi ▃▁▂▂▁▁▄▆▆▇▇█234.21177.537120.101129.38598.72392.75250.552409.1420.425476.324442.937523.768NANA470.609NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:LongTermDebt █▁▁▁▁▁▁▁▁▁▁▁▁▄▆▆458.863284.422284.713284.99285.268285.544285.821286.947287.217287.487287.757288.014288.271371.528411.811400.46NANA448.202NANANANA350.0350.0350.0250.0250.0250.0250.0250.00.0125.0125.0125.00.049.76949.95449.68749.91451.36151.04951.104NANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo █▁▄▄4.0782.6083.3063.175NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree ▇▁█▆2.52.0262.6082.473NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▆▁█▄1.9691.7832.0261.887NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA1.783NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA8.875NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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 ▂▁▁▁▂▂▂▃▃▃▂▃▃▃▃▄▄▄▄▆▆▅▅▅▆▆▆███████▇█▇▇▆▆▅▅▄▄▄▄1424.041321.3161349.211329.8931474.391427.5091511.9131589.4581581.5561561.8961523.0021586.8951574.6161569.1691594.7951850.891838.0961825.6861798.7022042.1672028.1951984.5141958.3542006.792057.1842128.6442157.9442321.2122360.7712351.9822394.4142373.3612336.7882361.0432270.582349.3982278.1432216.7912164.4532021.7631966.3641884.741855.8631818.2071792.9781757.703
us-gaap:CommonStockValue ███████████████████████████████████▁▁▁▁▁▁▁▁0.6330.6330.6320.6320.6320.6320.6310.6310.6310.6310.630.630.630.630.6280.6280.6280.6280.6270.6270.6270.6260.6250.6250.6250.6250.6230.6230.6230.6230.6210.6210.6210.6210.6190.3470.3470.3460.3460.3450.3450.3450.344NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ▃▃▃▃▃▂▂▃▃▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁████████390.748388.924388.15387.386386.365384.732384.551385.181385.2383.494384.713384.638383.001380.25383.077380.595379.587375.912376.518371.993370.424366.727365.399364.877362.23359.135359.577357.779355.399351.548349.894347.547345.845342.59341.78543.471543.531539.969538.625537.039535.427533.124532.213NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ▂▁▁▁▂▃▃▄▄▄▃▄▄▄▄▆▆▆▆▇▇▇▇▇▇▇▇███▇▇▆▆▅▆▅▅▅▃▃▃▂1395.5491306.1991301.1631289.5521442.2251463.0171505.7381581.7891581.2731586.3931571.8471639.7431625.1371614.3441614.1861864.1361851.7451848.7511824.0882034.8982017.5211990.9071988.0352022.5342028.7452012.3281991.7042094.1812076.7422044.4282015.6031963.141915.3161880.2621782.8571851.0521798.6221747.8351699.8531566.8881530.8161475.7191428.026NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▄▃▅▄▄▂▃▃▃▂▁▁▁▁▂▃▃▃▂▄▄▄▃▃▃▄▄▄▅▅▄▅▅▇▇█▇▇▇▇▆▅▅53.07241.52275.22768.28561.13-4.9136.95539.13431.7298.655-16.911-20.107-16.143-8.04614.91125.45926.06420.32317.39956.31561.28947.11523.85536.09641.04965.87758.20467.00781.65370.40659.66170.07375.062137.626145.38158.936140.051133.049130.037122.34899.05774.83379.124NANANA
us-gaap:TreasuryStockValue ████████████████████████▇▆▅▄▄▃▂▁▁▁▁▄▄▄▄▄▄▄▄415.962415.962415.962415.962415.962415.962415.962417.277417.277417.277417.277418.009418.009418.009418.007419.928419.928419.928419.93421.666421.666420.861419.56417.342375.465309.321252.164198.378153.646115.02331.3658.020.0560.0560.056204.408204.408204.408204.408204.857199.281199.281183.844NANANA
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▃▂▂▂▂▂▃▁▃▃▃▃▃▂▆▂▅▆█▃▅▅▃▅▄▅▄▄▄▆▄▄▄▄1.1531.0240.7841.0171.0271.0171.203-0.0111.0831.2371.1751.6041.5770.9023.5051.0182.7463.3464.9971.6453.12.7151.5282.72.32.7032.0342.42.43.242.3122.22.42.282NANANANANANANANANANANANA
  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 ▂▄▃▇▃▁▃▆▅▅▄█▁▇▆▅▂▆▅▅▄▆▂▆▃▅▂▇▂▄▃▅▂▁2.31528.719.1770.714.522-12.04919.36349.78844.62334.39230.87180.828-7.78873.35450.96544.017-4.46558.47940.12842.76129.24956.9826.43751.77116.90936.843-5.08171.949-1.30130.43514.64136.2330.835-13.107NANANA28.152.94653.36628.19124.86130.56532.70728.14347.776
us-gaap:NetCashProvidedByUsedInInvestingActivities ▅▅▅▄▅▆▆▅▅▅▅▅▇▇▅▅▆▇▄▅▄▅▆▆▅▆▅▅▅█▁█▅▅▆▅▅▅▅▅▅▅▅▅▅▅-44.668-26.261-30.483-59.529.69471.82576.239-22.997-6.5883.868-19.886-43.115131.791146.107-27.635-2.76958.497196.574-135.211-47.454-64.439-31.83557.46956.65615.25598.40727.04526.548-25.952239.339-369.53266.50739.032-3.81240.576-0.13114.431-28.033-40.556-23.98114.1230.803-17.63727.6885.994-38.392
us-gaap:NetCashProvidedByUsedInFinancingActivities ▅▅▅▅▅▅▅▅▅▅▅▅▄▁▅▅▅▂▆▅▅▄▅▄▄▃▄▄▄▄█▃▅▅▅▄▅▅▅▅▅▅▅▄▅▅-11.686-3.386-4.853-3.5-17.117-17.976-22.444-16.459-17.986-46.901-18.073-16.869-100.535-310.709-7.84-39.706-38.487-270.48283.527-11.573-16.953-68.935-24.148-58.451-84.374-128.714-72.929-61.151-58.331-102.914205.221-142.923-15.463-6.802-49.578-63.051-7.276-10.037-7.697-4.904-0.592-17.011-10.341-57.418-37.698-1.178
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▅▄▅▅▇█▅▆▅▅▆▆▁-54.039-0.947-16.1667.687.09941.873.15810.33220.049-8.641-7.08820.84423.468-91.248NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  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:DeferredIncomeTaxExpenseBenefit ▆▆▆▄▅▄▁▄▆▇▃▆▆▆█▄▅█0.459-2.2720.852-9.173-2.603-10.224-23.775-9.702-1.7846.618-12.0251.4310.864-2.0949.337-7.666-7.0327.054NANANANANANA-5.9227.3561.351-3.0661.7366.7731.51710.629-2.04714.55930.2774.4570.4872.523-14.77-0.009-0.17813.906-0.919-6.811-2.986.31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▄▃▇▃▁▃▆▅▅▄█▁▇▆▅▂▆▅▅▄▆▂▆▃▅▂▇▂▄▃▅▂▁2.31528.719.1770.714.522-12.04919.36349.78844.62334.39230.87180.828-7.78873.35450.96544.017-4.46558.47940.12842.76129.24956.9826.43751.77116.90936.843-5.08171.949-1.30130.43514.64136.2330.835-13.107NANANA28.152.94653.36628.19124.86130.56532.70728.14347.776
us-gaap:NetIncomeLoss ▇▅▅▁▄▄▃▅▅▅▄▅▅▅▅▅▅▆▆▅▆▅▅▅▅▆▆▅▆▆▆▆▆▇▇▆▆▆█▆▆▆▇▆▆▆92.057.73514.305-149.979-18.099-21.954-59.37517.19311.53631.65-24.4531.22828.42311.85617.34228.94919.51841.45554.84833.83443.08119.31734.94810.27633.15837.81465.11434.77849.94246.73170.86463.35750.451112.85101.26660.10658.45355.645140.60243.70555.09647.693102.05351.05240.38138.112
us-gaap:ShareBasedCompensation ▃▂▂▂▂▂▃▁▃▃▃▃▃▂▆▂▅▆█▃▅▅▃▅▄▅▄▄▄▆▄▄▄▄▄▃▅▄▃▃▄▃▃▃▃▃1.1531.0310.7881.021.0211.0111.2040.0031.0921.2281.1761.6281.6150.9023.491.0182.7463.3464.9971.6453.0982.7151.5282.6722.2632.7032.0342.3812.4013.242.3122.22.42.2822.2581.32.92.131.6971.7081.9771.7371.6291.5681.5411.4
  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 ▅▅▅▄▅▆▆▅▅▅▅▅▇▇▅▅▆▇▄▅▄▅▆▆▅▆▅▅▅█▁█▅▅▆▅▅▅▅▅▅▅▅▅▅▅-44.668-26.261-30.483-59.529.69471.82576.239-22.997-6.5883.868-19.886-43.115131.791146.107-27.635-2.76958.497196.574-135.211-47.454-64.439-31.83557.46956.65615.25598.40727.04526.548-25.952239.339-369.53266.50739.032-3.81240.576-0.13114.431-28.033-40.556-23.98114.1230.803-17.63727.6885.994-38.392
  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 ▅▅▅▅▅▅▅▅▅▅▅▅▄▁▅▅▅▂▆▅▅▄▅▄▄▃▄▄▄▄█▃▅▅▅▄▅▅▅▅▅▅▅▄▅▅-11.686-3.386-4.853-3.5-17.117-17.976-22.444-16.459-17.986-46.901-18.073-16.869-100.535-310.709-7.84-39.706-38.487-270.48283.527-11.573-16.953-68.935-24.148-58.451-84.374-128.714-72.929-61.151-58.331-102.914205.221-142.923-15.463-6.802-49.578-63.051-7.276-10.037-7.697-4.904-0.592-17.011-10.341-57.418-37.698-1.178
us-gaap:PaymentsOfDividendsCommonStock ▁▁▁▁▁▁▁▁▁▂▁▁▁█▁▁▁█▁▁▁▃▁▁▁▅▁▁▁▁▁▁▁▁▆▁▁▁▁2.692.6862.6862.68616.57816.71416.6316.61816.61843.33816.58216.58116.579266.73416.52416.52416.516265.66416.45816.46116.45569.43816.46816.74717.2167.21117.43217.59717.86518.35815.53315.52215.320.0177.1967.6527.6487.6227.617NANANANANANANA
  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
Value633000.0633000.0632000.0632000.0632000.0632000.0631000.0631000.0631000.0631000.0630000.0630000.0630000.0630000.0628000.0628000.0628000.0628000.0627000.0627000.0627000.0626000.0625000.0625000.0625000.0625000.0623000.0623000.0623000.0623000.0621000.0621000.0621000.0621000.0619000.0347000.0347000.0346000.0346000.0345000.0345000.0345000.0344000.0342000.0
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 Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value632000.0631000.0630000.0628000.0
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value53535353535356616161
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value5453535353535353535353535353535353545556585961626261303030303030323232
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value5353535353535353535353535353535353545556585961616161303030303030313232
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302020-09-302020-06-302019-09-302019-06-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value37000.0177000.0180000.00008000.0028000.0000000000000
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.00.00.00.0100.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value1.710.140.27-2.78-0.34-0.41-1.10.320.210.59-0.460.580.530.220.320.540.370.781.030.640.810.360.660.190.60.671.130.590.840.761.151.020.821.831.651.961.911.824.61.431.81.563.321.611.251.17
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
Value1.70.140.27-2.78-0.34-0.41-1.10.320.210.59-0.460.580.530.220.320.540.360.771.020.630.810.360.650.190.60.671.120.590.840.761.141.020.811.821.641.941.891.84.561.421.791.553.281.591.231.16
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

Income Loss From Continuing Operations Per Diluted Share

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare

us-gaap:IncomeLossFromContinuingOperationsPerDilutedShare


Income
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-0.010000000000-0.010-0.01-0.010-0.01
Percentage of IncomeLossFromContinuingOperationsPerDilutedShare100.00.00.00.00.00.00.00.00.00.00.0100.00.0100.0100.00.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllocatedShareBasedCompensationExpense


Allocated
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value1020000.01021000.01011000.03000.01092000.01228000.01628000.01615000.0902000.01018000.02746000.03346000.01645000.03098000.02715000.02672000.01300000.02900000.02100000.01700000.02000000.01700000.01600000.01500000.0
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.40.50.50.00.50.50.70.60.40.41.31.50.71.41.41.50.71.81.21.01.11.00.90.9

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
Value267211208374278230338231228230218218228192174193186182174180166172154163162162130156156146789510595379284105-1.944999810634112100110
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 Revenues95.096.190.6165.2125.6117.3135.795.795.385.6121.587.689.095.883.684.790.782.073.380.677.489.383.493.579.878.160.076.870.370.540.852.562.048.919.352.551.558.4-0.961.256.161.618.862.262.567.5

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
Value103-25.9721-142.82447-63.819-61.553243457-21.2542720-14.5176.79428254415285742225.3238.3345562061576058-12.1131058778655814866794348787251
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 Revenues36.8-11.89.3-62.921.6-32.4-24.710.214.421.3-11.810.97.9-7.23.212.412.319.96.712.926.722.012.23.04.121.925.89.927.527.631.332.2-7.153.944.944.939.932.571.841.445.425.026.243.644.931.3

Deferred Policy Acquisition Cost Amortization Expense

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense

us-gaap:DeferredPolicyAcquisitionCostAmortizationExpense


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value262427272527302928282726252425242222232121211921191915161818151514131314141515151414151414
Percentage of DeferredPolicyAcquisitionCostAmortizationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues9.511.311.811.911.413.912.112.011.710.515.210.710.012.412.310.711.110.19.99.710.111.110.512.19.89.17.28.28.18.78.28.58.46.96.98.08.88.47.39.68.48.38.18.29.1

Gain Loss On Investments

us-gaap:GainLossOnInvestments

us-gaap:GainLossOnInvestments


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value108.849158.83819-28.673121.1349.30836-46.139122.795-12.517-2.4017.749-2.21913161510-8.352-6.019-36.632-3.8284.8396.995-8.131132.74420128.471266.51513-1.5481011-11.9722.24.1248.53514-3.501
Percentage of GainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues3.84.06.83.99.0-14.65.10.53.913.6-25.75.01.1-6.2-1.13.4-1.16.07.07.05.1-4.3-3.2-20.9-1.92.33.2-4.05.91.310.56.95.013.73.37.5-0.95.95.6-7.41.32.44.68.1-2.2

us-gaap:GainLossOnInvestments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:LloydsSyndicates


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.089-0.115-0.1120.4890.5290.0810.0430.2850.2620.178-0.056-0.098-0.252-0.0540.0020.0310.047
Percentage of GainLossOnInvestments0.8-1.3-0.75.52.6-0.30.325.12.80.50.1-0.8-9.00.4-0.10.4-2.1
Percentage of Revenues0.0-0.1-0.00.20.20.00.00.10.10.1-0.0-0.0-0.1-0.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments pra:LloydsSyndicates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1.580.9872.1911.4952.606-3.2072.071-0.098-0.0942.141-3.6161.397-0.457-0.4731.1990.944
Percentage of GainLossOnInvestments14.611.214.116.913.011.216.2-8.6-1.05.87.811.3-16.43.8-49.912.2
Percentage of Revenues0.60.41.00.71.2-1.60.8-0.0-0.00.8-2.00.6-0.2-0.20.60.4
Percentage of Revenues us-gaap:OperatingSegments pra:SegregatedPortfolioCellReinsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:Corporate


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value9.1647.977136.85416-25.547100.9479.1434-42.467113.047-12.463-2.4037.718-2.26613161510-8.347-6.018-36.641-3.8324.8286.991-8.13113
Percentage of GainLossOnInvestments84.690.186.677.684.389.183.583.598.293.792.089.5109.099.6100.199.6102.199.899.999.799.999.9100.0100.0100.199.899.9100.0100.0
Percentage of Revenues3.33.65.93.07.6-13.04.30.43.812.8-23.74.41.2-6.2-1.13.4-1.15.97.07.05.1-4.3-3.2-20.9-1.92.33.2-4.05.9
Percentage of Revenues us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:GainLossOnInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:NBPrivateEquityCreditOpportunitiesFundLP


Gain
Period End2021-03-31
Value117
Percentage of GainLossOnInvestments1322.2
Percentage of Revenues53.2
Percentage of Revenues pra:NBPrivateEquityCreditOpportunitiesFundLP0.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value888.47121-147.838-56.785-34.03-89.178101138-38.54331288.4343434194063434820301141458747666111086641351578379752086276
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues31.43.99.4-65.2-25.6-17.3-35.74.34.714.4-21.512.411.04.216.415.39.318.026.719.422.610.716.66.520.221.940.023.229.729.557.347.838.069.380.747.548.541.6100.938.843.9

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
Value-3.5980.7367.2922.141-38.686-12.076-29.804-6.689-0.2776.961-14.093-0.206-0.311-3.422166.024-0.332-1.2248.6639.685.4131.364-4.0261.1227.8547.7082212161439231422562321196719211848172015
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 Revenues-1.30.33.20.9-17.4-6.1-11.9-2.8-0.12.6-7.9-0.1-0.1-1.78.12.6-0.2-0.53.64.32.50.7-2.20.63.93.710.16.17.27.120.512.88.411.528.913.312.910.832.811.912.310.926.19.612.59.2

us-gaap:IncomeTaxExpenseBenefit us-gaap:BusinessAcquisition

pra:NORCALGroup


Income
Period End2021-06-30
Value-3.8
Percentage of IncomeTaxExpenseBenefit105.6
Percentage of Revenues-1.3
Percentage of Revenues pra:NORCALGroup0.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:LloydsSyndicates


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.00.00.0-0.0290.161-0.1610.3040.3040.038-0.3610.00.006-0.0730.061-0.548
Percentage of IncomeTaxExpenseBenefit0.00.0-0.00.2-0.52.4-109.74.4-0.3175.2-0.0-0.2-0.41.0165.1
Percentage of Revenues0.00.00.0-0.00.1-0.10.10.10.0-0.10.00.0-0.00.0-0.3
Percentage of Revenues us-gaap:OperatingSegments pra:LloydsSyndicates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:Corporate


Income
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.7367.2922.141-38.686-12.047-29.965-6.528-0.0276.657-14.1310.155-0.311-3.428165.9630.216-1.217108.3284.6011.28-4.5140.997.2347.708221216
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.099.8100.597.69.795.6100.3-75.2100.0100.2100.499.0-65.199.4121.586.085.093.8112.188.292.1100.0100.0100.0100.0
Percentage of Revenues0.33.20.9-17.4-6.1-12.0-2.7-0.02.5-7.90.1-0.1-1.78.12.60.1-0.54.43.72.10.7-2.40.63.63.710.16.17.2
Percentage of Revenues us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value5.1763.2123.7783.8813.7144.1293.7864.2744.2474.334.8553.5993.9583.7054.4424.1244.1454.1333.7473.7483.8513.6863.6183.6373.713.6313.3873.6063.5213.571.670.3220.3920.3710.1790.350.8260.8250.8330.9320.9180.7950.8210.8320.8270.813
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 Revenues1.81.51.61.71.72.11.51.81.81.62.71.41.51.82.11.82.01.91.61.71.81.91.92.11.81.71.61.81.61.70.90.20.20.20.10.20.50.50.40.60.50.50.40.50.50.5

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

us-gaap:OperatingSegments, us-gaap:Corporate


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5.1763.2123.7783.8813.7144.1293.7864.274-4.2474.334.8553.6453.9583.7054.4424.1244.1454.1333.7473.7483.8513.6863.6183.6373.713.6313.3873.6063.521
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0-100.0100.0100.0101.3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.81.51.61.71.72.11.51.8-1.81.62.71.51.51.82.11.82.01.91.61.71.81.91.92.11.81.71.61.81.6
Percentage of Revenues us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value927.73514-149.979-18.099-21.954-59.375171131-24.4531281117281941543343193410333765344946706350112101605855140435547102514038
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 Revenues32.73.56.2-66.1-8.2-11.2-23.87.14.811.8-13.612.511.15.98.312.79.518.623.115.120.110.018.85.916.318.229.917.122.522.536.734.929.557.951.834.235.730.868.127.031.527.555.028.225.023.2

us-gaap:NetIncomeLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:NBPrivateEquityCreditOpportunitiesFundLP


Net
Period End2021-03-31
Value2.056
Percentage of NetIncomeLoss26.6
Percentage of Revenues0.9
Percentage of Revenues pra:NBPrivateEquityCreditOpportunitiesFundLP0.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value927.73514-149.979-18.099-21.954-59.374171131-24.4531281117281941543343193410333765344946706350112101605855140435547102514038
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 Revenues32.73.56.2-66.1-8.2-11.2-23.87.14.811.8-13.612.511.15.98.312.79.518.623.115.120.110.018.85.916.318.229.917.122.522.536.734.929.557.951.834.235.730.868.127.031.527.555.028.225.023.2
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value17151616182023232322242322222623222324252425262627273232302929333332343334333434363636353737
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 Revenues6.26.87.07.58.210.69.39.89.88.513.59.38.711.012.510.411.010.410.411.311.413.214.215.413.713.115.016.113.614.315.518.719.516.517.519.321.118.516.721.120.820.819.419.723.022.9

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

us-gaap:OperatingSegments, pra:LloydsSyndicates


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.5180.7290.8920.9511.1261.1591.2691.0771.1991.0060.9880.7830.8360.7510.5420.4120.41
Percentage of NetInvestmentIncome3.04.95.55.66.25.65.54.55.14.44.13.43.73.42.11.71.8
Percentage of Revenues0.20.30.40.40.50.60.50.40.50.40.60.30.30.40.30.20.2
Percentage of Revenues us-gaap:OperatingSegments pra:LloydsSyndicates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.2060.2210.2520.2730.3050.2540.3170.4450.3680.4480.4660.3710.3730.3560.3170.29
Percentage of NetInvestmentIncome1.21.51.61.61.71.21.41.91.62.01.91.61.71.61.21.2
Percentage of Revenues0.10.10.10.10.10.10.10.20.20.20.30.10.10.20.20.1
Percentage of Revenues us-gaap:OperatingSegments pra:SegregatedPortfolioCellReinsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:Corporate


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1614141516192122212122222121252322222424242526262727323230
Percentage of NetInvestmentIncome95.893.792.992.892.193.293.293.693.393.694.095.096.396.697.998.398.298.498.498.698.698.899.099.099.399.399.599.699.6
Percentage of Revenues5.96.46.56.97.59.98.79.29.27.912.78.98.410.612.210.210.810.210.211.111.313.014.115.313.613.015.016.013.5
Percentage of Revenues us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetInvestmentIncome us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:NBPrivateEquityCreditOpportunitiesFundLP


Net
Period End2021-03-31
Value40
Percentage of NetInvestmentIncome270.6
Percentage of Revenues18.5
Percentage of Revenues pra:NBPrivateEquityCreditOpportunitiesFundLP0.0

Operating Expenses

us-gaap:OperatingExpenses us-gaap:LongTermPurchaseCommitmentByCategoryOfItemPurchased

us-gaap:OperatingExpenses

pra:DataAnalyticsServices


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value0.71.21.21.21.21.41.31.01.0
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.30.50.50.60.50.60.50.40.6
Percentage of Revenues pra:DataAnalyticsServices0.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


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
Value11-33.7056.9427.15566-41.865-2.1797.40523253.196-3.964-8.097-26.373-10.548-0.6055.7412.924-38.916-4.9741423-12.241-4.953-24.8287.673-8.803-14.6461110-10.412-4.989-62.564-7.754-13.556187.0023.012
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.1-15.33.03.229.8-21.3-0.93.19.69.51.8-1.6-3.2-13.1-5.0-0.32.81.3-16.4-2.26.612.0-6.6-2.8-12.23.7-4.0-7.25.15.2-5.4-2.7-36.6-4.0-6.910.74.31.7

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value11-33.7056.9427.15566-41.865-2.1797.40523253.196-3.964-8.097-26.373-10.548-0.6055.7412.924-38.916-4.9741423-12.241-4.953-24.8287.673-8.803-14.6461110-10.412-4.989-62.564-7.754-13.556187.0023.012
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues4.1-15.33.03.229.8-21.3-0.93.19.69.51.8-1.6-3.2-13.1-5.0-0.32.81.3-16.4-2.26.612.0-6.6-2.8-12.23.7-4.0-7.25.15.2-5.4-2.7-36.6-4.0-6.910.74.31.7
Percentage of Revenues us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Income

us-gaap:OtherIncome

us-gaap:OtherIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.4582.0050.8021.7231.6952.2511.8012.5482.7772.0952.6782.3882.0442.7232.9330.512.251.8211.8451.4282.1812.3540.7232.7591.5762.1692.3431.8082.1542.0942.2461.8041.6871.8131.8991.5291.8681.8091.8217.4711.6852.5872.2221.7641.6832.321
Percentage of OtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.90.90.30.80.81.10.71.11.20.81.51.00.81.41.40.21.10.80.80.61.01.20.41.60.81.01.10.91.01.01.21.01.00.91.00.91.11.00.94.61.01.51.21.01.01.4

us-gaap:OtherIncome us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-0.626-0.972-0.642-0.642-0.415-0.741-0.554-0.778-0.418-0.689-0.703-0.551-0.089-0.173-0.046-0.072-0.055-0.086-0.14-0.419-0.164-0.103-0.154-0.238-0.077-0.111-0.089-0.187-0.086
Percentage of OtherIncome-25.5-48.5-80.0-37.3-24.5-32.9-30.8-30.5-15.1-32.9-26.3-23.1-4.4-6.4-1.6-14.1-2.4-4.7-7.6-29.3-7.5-4.4-21.3-8.6-4.9-5.1-3.8-10.3-4.0
Percentage of Revenues-0.2-0.4-0.3-0.3-0.2-0.4-0.2-0.3-0.2-0.3-0.4-0.2-0.0-0.1-0.0-0.0-0.0-0.0-0.1-0.2-0.1-0.1-0.1-0.1-0.0-0.1-0.0-0.1-0.0
Percentage of Revenues us-gaap:IntersegmentElimination0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pra:LloydsSyndicates


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.3610.221-0.1680.4110.04-0.232-0.295-0.1650.032-0.1460.0750.352-0.4360.3310.165-1.881-0.151
Percentage of OtherIncome14.711.0-20.923.92.4-10.3-16.4-6.51.2-7.02.814.7-21.312.25.6-368.8-6.7
Percentage of Revenues0.10.1-0.10.20.0-0.1-0.1-0.10.0-0.10.00.1-0.20.20.1-0.8-0.1
Percentage of Revenues us-gaap:OperatingSegments pra:LloydsSyndicates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.0010.0010.0020.0120.0550.1360.1620.1760.1350.0870.0350.0860.060.030.0320.033
Percentage of OtherIncome0.00.00.20.73.26.09.06.94.94.21.33.62.91.11.16.5
Percentage of Revenues0.00.00.00.00.00.10.10.10.10.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments pra:SegregatedPortfolioCellReinsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SpecialtyPropertyandCasualty


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.4710.4690.3930.7261.0921.6981.261.8581.471.2091.8991.4261.2621.2561.7451.2761.4691.1981.2851.0121.7321.2760.0281.661.3761.4961.6561.0711.533
Percentage of OtherIncome59.823.449.042.164.475.470.072.952.957.770.959.761.746.159.5250.265.365.869.670.979.454.23.960.287.369.070.759.271.2
Percentage of Revenues0.50.20.20.30.50.90.50.80.60.41.10.60.50.60.80.60.70.50.50.50.80.70.00.90.70.70.80.50.7
Percentage of Revenues us-gaap:OperatingSegments pra:SpecialtyPropertyandCasualty0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:WorkersCompensationInsuranceSegment


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.90.3920.5190.757
Percentage of OtherIncome36.619.630.633.6
Percentage of Revenues0.30.20.20.4
Percentage of Revenues us-gaap:OperatingSegments pra:WorkersCompensationInsuranceSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:Corporate


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value0.3511.8940.7180.7750.4040.6330.7770.9630.8330.9050.7880.6991.0950.9430.9141.0230.7780.1730.3110.0150.2860.4580.2291.5590.1110.1570.4290.8240.523
Percentage of OtherIncome14.394.589.545.023.828.143.137.830.043.229.429.353.634.631.2200.634.69.516.91.113.119.531.756.57.07.218.345.624.3
Percentage of Revenues0.10.90.30.30.20.30.30.40.30.30.40.30.40.50.40.40.40.10.10.00.10.20.10.90.10.10.20.40.2
Percentage of Revenues us-gaap:OperatingSegments us-gaap:Corporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:WorkersCompensationInsurance


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.4410.5190.7570.4510.4940.7250.7290.5840.3760.602
Percentage of OtherIncome25.630.633.625.019.426.134.821.815.729.5
Percentage of Revenues0.20.20.40.20.20.30.30.30.20.2
Percentage of Revenues us-gaap:OperatingSegments us-gaap:WorkersCompensationInsurance0.00.00.00.00.00.00.00.00.00.0

Policyholder Benefits And Claims Incurred Net

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1811491401452101642641611681591541471611291051291151191071181061109210810310575999889346170575.009564870-35.664636470-5.921796878
Percentage of PolicyholderBenefitsAndClaimsIncurredNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues64.668.161.064.295.283.8105.966.870.359.485.959.263.164.650.356.656.253.445.152.649.857.449.962.251.150.634.648.744.543.018.134.041.329.62.632.229.338.9-17.339.036.840.6-3.244.142.448.0

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:LloydsSyndicates


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.44412109.31715141211-11.825102010128.4863.5022010
Percentage of PolicyholderBenefitsAndClaimsIncurredNet3.08.77.76.47.39.04.87.4-7.06.813.36.87.76.53.315.89.3
Percentage of Revenues1.95.94.74.16.97.55.14.9-4.94.111.44.04.94.21.78.95.2
Percentage of Revenues us-gaap:OperatingSegments pra:LloydsSyndicates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value8.4439.4255.7156.8587.689.352119.778-19.97310118.569.0489.953118.903
Percentage of PolicyholderBenefitsAndClaimsIncurredNet4.66.34.14.73.65.74.56.1-11.96.77.25.85.67.710.66.9
Percentage of Revenues3.04.32.53.03.54.84.84.0-8.34.06.23.43.55.05.33.9
Percentage of Revenues us-gaap:OperatingSegments pra:SegregatedPortfolioCellReinsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SpecialtyPropertyandCasualty


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value14010196102159110211107-106.017107919811184687371746272627153636469366366
Percentage of PolicyholderBenefitsAndClaimsIncurredNet77.167.669.070.775.667.380.066.6-62.967.459.566.669.265.265.357.161.762.958.561.258.364.157.258.861.665.749.064.167.4
Percentage of Revenues49.846.042.145.472.056.484.744.5-44.240.051.139.543.742.132.832.334.733.626.432.229.036.828.636.631.533.216.931.230.0
Percentage of Revenues us-gaap:OperatingSegments pra:SpecialtyPropertyandCasualty0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:WorkersCompensationInsuranceSegment


Policyholder
Period End2021-06-302021-03-312020-06-302020-03-31
Value27262829
Percentage of PolicyholderBenefitsAndClaimsIncurredNet15.317.513.518.1
Percentage of Revenues9.911.912.815.1
Percentage of Revenues us-gaap:OperatingSegments pra:WorkersCompensationInsuranceSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:WorkersCompensationInsurance


Policyholder
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2628292832-30.62530303029
Percentage of PolicyholderBenefitsAndClaimsIncurredNet18.213.518.110.720.0-18.219.119.920.818.1
Percentage of Revenues11.712.815.111.313.4-12.811.317.112.311.4
Percentage of Revenues us-gaap:OperatingSegments us-gaap:WorkersCompensationInsurance0.00.00.00.00.00.00.00.00.00.0

Premiums Earned Net

us-gaap:PremiumsEarnedNet

us-gaap:PremiumsEarnedNet


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value238187187194207203214215209208202206223187182192180182
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues84.985.281.485.793.5103.686.089.287.377.4112.682.787.393.187.584.287.782.0

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

us-gaap:OperatingSegments, pra:LloydsSyndicates


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value13151618212223211718181917121116
Percentage of PremiumsEarnedNet5.68.58.69.310.210.810.99.98.39.08.99.27.86.76.58.5
Percentage of Revenues4.87.27.08.09.511.29.48.87.26.910.17.66.86.25.77.1
Percentage of Revenues us-gaap:OperatingSegments pra:LloydsSyndicates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value16151616161619191919191818171717
Percentage of PremiumsEarnedNet6.88.58.98.38.18.39.39.29.29.49.79.28.29.19.68.9
Percentage of Revenues5.87.27.27.17.68.68.08.28.07.311.07.67.18.58.47.5
Percentage of Revenues us-gaap:OperatingSegments pra:SegregatedPortfolioCellReinsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:SpecialtyPropertyandCasualty


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value168115112117127120123125126124113120142114112117
Percentage of PremiumsEarnedNet70.661.759.960.661.359.057.758.060.259.656.158.663.861.461.561.0
Percentage of Revenues59.952.548.851.957.361.249.651.852.646.163.248.455.757.253.851.3
Percentage of Revenues us-gaap:OperatingSegments pra:SpecialtyPropertyandCasualty0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pra:WorkersCompensationInsuranceSegment


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value40404244
Percentage of PremiumsEarnedNet17.021.420.521.8
Percentage of Revenues14.418.219.122.6
Percentage of Revenues us-gaap:OperatingSegments pra:WorkersCompensationInsuranceSegment0.00.00.00.0

us-gaap:OperatingSegments, us-gaap:WorkersCompensationInsurance


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value42424447494645504745
Percentage of PremiumsEarnedNet21.920.521.822.022.922.322.125.223.020.2
Percentage of Revenues18.719.122.618.920.519.417.128.319.017.7
Percentage of Revenues us-gaap:OperatingSegments us-gaap:WorkersCompensationInsurance0.00.00.00.00.00.00.00.00.00.0

us-gaap:PremiumsEarnedNet us-gaap:ProductOrService

pra:RetroactiveInsuranceContract


Premiums
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-30
Value0.03.00.02.70.00.0
Percentage of PremiumsEarnedNet0.01.60.01.30.00.0
Percentage of Revenues0.01.40.01.10.00.0
Percentage of Revenues pra:RetroactiveInsuranceContract0.00.00.00.00.00.0

pra:RetroactiveInsuranceContractProspectiveCoverage


Premiums
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-30
Value0.00.70.01.80.00.0
Percentage of PremiumsEarnedNet0.00.40.00.80.00.0
Percentage of Revenues0.00.30.00.70.00.0
Percentage of Revenues pra:RetroactiveInsuranceContractProspectiveCoverage0.00.00.00.00.00.0

pra:RetroactiveInsuranceContractRetroactiveCoverage


Premiums
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-30
Value0.02.30.00.90.00.0
Percentage of PremiumsEarnedNet0.01.20.00.40.00.0
Percentage of Revenues0.01.00.00.40.00.0
Percentage of Revenues pra:RetroactiveInsuranceContractRetroactiveCoverage0.00.00.00.00.00.0

us-gaap:PremiumsEarnedNet us-gaap:StatementBusinessSegments

pra:LloydsSyndicates


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value13151618212223211718181917121116
Percentage of PremiumsEarnedNet5.68.58.69.310.210.810.99.98.39.08.99.27.86.76.58.5
Percentage of Revenues4.87.27.08.09.511.29.48.87.26.910.17.66.86.25.77.1
Percentage of Revenues pra:LloydsSyndicates0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pra:SegregatedPortfolioCellReinsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value16151616161619191919191818171717
Percentage of PremiumsEarnedNet6.88.58.98.38.18.39.39.29.29.49.79.28.29.19.68.9
Percentage of Revenues5.87.27.27.17.68.68.08.28.07.311.07.67.18.58.47.5
Percentage of Revenues pra:SegregatedPortfolioCellReinsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pra:SpecialtyPropertyandCasualty


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value168115112117127120123125126124113120142114112117
Percentage of PremiumsEarnedNet70.661.759.960.661.359.057.758.060.259.656.158.663.861.461.561.0
Percentage of Revenues59.952.548.851.957.361.249.651.852.646.163.248.455.757.253.851.3
Percentage of Revenues pra:SpecialtyPropertyandCasualty0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pra:WorkersCompensationInsuranceSegment


Premiums
Period End2021-06-302021-03-312020-06-302020-03-31
Value40404244
Percentage of PremiumsEarnedNet17.021.420.521.8
Percentage of Revenues14.418.219.122.6
Percentage of Revenues pra:WorkersCompensationInsuranceSegment0.00.00.00.0

us-gaap:WorkersCompensationInsurance


Premiums
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value42424447494645504745
Percentage of PremiumsEarnedNet21.920.521.822.022.922.322.125.223.020.2
Percentage of Revenues18.719.122.618.920.519.417.128.319.017.7
Percentage of Revenues us-gaap:WorkersCompensationInsurance0.00.00.00.00.00.00.00.00.00.0

Realized Investment Gains Losses

us-gaap:RealizedInvestmentGainsLosses us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:RealizedInvestmentGainsLosses

pra:NBPrivateEquityCreditOpportunitiesFundLP


Realized
Period End2021-03-31
Value14
Percentage of RealizedInvestmentGainsLosses100.0
Percentage of Revenues6.6
Percentage of Revenues pra:NBPrivateEquityCreditOpportunitiesFundLP0.0

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
Value281220229226221196249241239268179249256201209228205222237224214193185174203207217203222208192181170194195175163180206161174173185181161163
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 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

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
Value63584674465446924783473048054824478647174600465345834678492949254861487250655015497648944908496350015114516953255397540551504963511252184876497249955033499849884926490548754647
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 dei:LegalEntity, us-gaap:ConsolidatedEntities

pra:PPMRRG, us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsdei:
Period End2021-06-30
Value146
Percentage of Assets2.3
Percentage of Assets2.3
Percentage of Assets pra:PPMRRG us-gaap:VariableInterestEntityPrimaryBeneficiary100.0

us-gaap:Assets us-gaap:BalanceSheetLocation, us-gaap:InvestmentsByConsolidatedAndNonconsolidatedEntities

pra:InvestmentsInUnconsolidatedSubsidiaries, us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-09-302020-06-302019-12-31
Value284277309
Percentage of Assets6.15.86.4
Percentage of Assets6.15.86.4
Percentage of Assets pra:InvestmentsInUnconsolidatedSubsidiaries us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value1617179118262255
Percentage of Assets34.837.339.745.8
Percentage of Assets34.837.339.745.8
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities, us-gaap:BalanceSheetLocation

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, pra:InvestmentsInUnconsolidatedSubsidiaries


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312019-12-31
Value282270282309
Percentage of Assets4.45.86.16.4
Percentage of Assets4.45.86.16.4
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary pra:InvestmentsInUnconsolidatedSubsidiaries100.0100.0100.0100.0

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
Value49343353330533623309330332933234320431553077306630083109333430743023304632662973294829092949295629442985301130043036305327562590277528572605262327172816283429672960302030192942
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 Assets77.671.771.071.769.269.868.567.167.066.966.965.965.666.567.662.462.262.564.559.359.259.560.159.658.958.458.356.456.356.553.552.254.354.853.452.854.456.056.759.560.161.661.963.3

us-gaap:Liabilities dei:LegalEntity, us-gaap:ConsolidatedEntities

pra:PPMRRG, us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesdei:
Period End2021-06-30
Value146
Percentage of Liabilities3.0
Percentage of Assets2.3
Percentage of Assets pra:PPMRRG us-gaap:VariableInterestEntityPrimaryBeneficiary100.0

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value268279303660
Percentage of Liabilities8.18.59.919.8
Percentage of Assets5.85.86.613.4
Percentage of Assets srt:ParentCompany16.615.616.629.3

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
Value63584674465446924783473048054824478647174600465345834678492949254861487250655015497648944908496350015114516953255397540551504963511252184876497249955033499849884926490548754647
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
Value1617179118262255
Percentage of LiabilitiesAndStockholdersEquity34.837.339.745.8
Percentage of Assets34.837.339.745.8
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1424132113491329147414271511158915811561152315861574156915941850183818251798204220281984195820062057212821572321236023512394237323362361227023492278221621642021196618841855181817921757170414231255
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.428.329.028.330.830.231.532.933.033.133.134.134.433.532.437.637.837.535.540.740.840.539.940.441.141.641.743.643.743.546.547.845.745.246.647.245.644.043.340.539.938.438.10.00.00.036.70.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value1349151115231594
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets29.031.533.132.4
Percentage of Assets srt:ParentCompany83.484.483.470.7

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-0.096-0.104-0.104-0.1-0.0780.0780.078-0.074-0.0690.0640.057-0.039
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value5341756861-4.913639318.655-16.911-20.107-16.143-8.046142526201756614723364165586781705970751371451581401331301229974791321047259-35.8989.902
Percentage of StockholdersEquity3.73.15.65.14.1-0.32.42.52.00.6-1.1-1.3-1.0-0.50.91.41.41.11.02.83.02.41.21.82.03.12.72.93.53.02.53.03.25.86.46.86.16.06.06.15.14.04.37.35.84.13.5-2.50.8
Percentage of Assets0.80.91.61.51.3-0.10.80.80.70.2-0.4-0.4-0.4-0.20.30.50.50.40.31.11.21.00.50.70.81.31.11.31.51.31.21.41.52.63.03.22.82.62.62.52.01.51.60.00.00.01.30.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value390388388387386384384385385383384384383380383380379375376371370366365364362359359357355351349347345342341543543539538532526518505
Percentage of StockholdersEquity27.429.428.829.126.227.025.424.224.424.625.324.224.324.224.020.620.720.620.918.218.318.518.718.217.616.916.715.415.114.914.614.614.814.515.123.123.924.424.928.730.936.440.3
Percentage of Assets6.18.38.38.38.18.18.08.08.08.18.48.38.48.17.87.77.87.77.47.47.47.57.47.47.27.07.06.76.66.56.87.06.86.67.010.910.910.710.810.911.30.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-0.057-0.057-0.7040.8170.3-0.219-0.190.190.121-0.503
Percentage of StockholdersEquity-0.0-0.0-0.00.10.0-0.0-0.00.00.0-0.0
Percentage of Assets-0.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent0.00.00.00.00.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Stockholders
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
Value5341756861-5.8053639318.401-17.08915
Percentage of StockholdersEquity3.73.25.65.14.2-0.42.42.52.00.5-1.11.0
Percentage of Assets0.80.91.61.51.3-0.10.80.80.70.2-0.40.3
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-03-312010-12-312009-12-312008-12-312007-12-31
Value0.6330.6330.6320.6320.6320.6320.6310.6310.6310.6310.630.630.630.630.6280.6280.6280.6280.6270.6270.6270.6260.6250.6250.6250.6250.6230.6230.6230.6230.6210.6210.6210.6210.6190.3470.3473350.3463340.3440.3420.3410.336
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.015.20.017.70.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.06.70.06.80.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value13951306130112891442146315051581158115861571163916251614161418641851184818242034201719901988202220282012199120942076204420151963191518801782185117981747169915661530147514281325127412341196970793
Percentage of StockholdersEquity98.098.996.497.097.8102.599.699.5100.0101.6103.2103.3103.2102.9101.2100.7100.7101.3101.499.699.5100.3101.5100.898.694.592.390.288.086.984.282.782.079.678.578.879.078.878.577.577.978.376.972.971.170.270.268.263.2
Percentage of Assets21.927.928.027.530.130.931.332.833.033.634.235.235.534.532.737.838.137.936.040.640.540.740.540.840.639.338.539.338.537.839.139.537.536.036.637.236.034.734.031.431.130.129.30.00.00.025.70.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarningsUnappropriated


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value266467165239441592239572
Percentage of StockholdersEquity19.830.910.915.024.530.211.123.9
Percentage of Assets5.79.73.64.98.712.14.611.1
Percentage of Assets us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-415.962-415.962-415.962-415.962-415.962-415.962-415.962-417.277-417.277-417.277-417.277-418.009-418.009-418.009-418.007-419.928-419.928-419.928-419.93-421.666-421.666-420.861-419.56-417.342-375.465-309.321-252.164-198.378-153.646-115.023-31.365-8.02-0.056-0.056-0.056-204.408-204.408-204.408-204.408-183.844-77.497-30.436-54.257
Percentage of StockholdersEquity-29.2-31.5-30.8-31.3-28.2-29.1-27.5-26.3-26.4-26.7-27.4-26.3-26.5-26.6-26.2-22.7-22.8-23.0-23.3-20.6-20.8-21.2-21.4-20.8-18.3-14.5-11.7-8.5-6.5-4.9-1.3-0.3-0.0-0.0-0.0-8.7-9.0-9.2-9.4-9.9-4.5-2.1-4.3
Percentage of Assets-6.5-8.9-8.9-8.9-8.7-8.8-8.7-8.6-8.7-8.8-9.1-9.0-9.1-8.9-8.5-8.5-8.6-8.6-8.3-8.4-8.5-8.6-8.5-8.4-7.5-6.0-4.9-3.7-2.8-2.1-0.6-0.2-0.0-0.0-0.0-4.1-4.1-4.1-4.1-3.8-1.70.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1602142152312242171758087664313411911710111712814519724120115120319724821029612927911994118971321201301251015950484548403.45930
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.54.64.64.94.74.63.61.71.91.50.92.72.42.42.12.32.62.94.04.94.13.04.03.84.73.95.52.55.62.31.82.42.02.62.42.62.52.11.21.00.00.00.00.90.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value5565258131103
Percentage of CashAndCashEquivalentsAtCarryingValue25.737.632.060.226.742.8
Percentage of Assets1.21.40.61.60.62.1
Percentage of Assets srt:ParentCompany3.43.71.43.60.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value160214215231224217175102917180876643134117
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.54.64.64.94.74.63.62.11.91.51.71.91.50.92.72.3

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value5565258131
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents25.737.632.060.226.7
Percentage of Assets1.21.40.61.60.6
Percentage of Assets srt:ParentCompany3.43.71.43.60.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:PropertyPlantAndEquipmentByType

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:BuildingAndBuildingImprovements


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value262525242224232120
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.50.50.50.50.50.40.40.4
Percentage of Assets us-gaap:BuildingAndBuildingImprovements0.00.00.00.00.00.00.00.00.0

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
Value3030302930313030303031313131313232313138383838383939394040404141414141414040404043434344
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 Assets0.50.70.70.60.60.70.60.60.60.70.70.70.70.70.60.70.70.60.60.80.80.80.80.80.80.80.80.80.70.80.80.80.80.80.90.80.80.80.80.80.90.90.91.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value49494949210210210210210210210210210210210210210210210210210210210210210210210210210210161161161161163159159159159159161161161122
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.81.11.11.14.44.54.44.44.44.54.64.54.64.54.34.34.34.34.24.24.24.34.34.24.24.14.14.03.93.93.13.23.23.13.33.23.23.23.23.23.33.33.32.6

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312011-12-31
Value25252525252525252525161414
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.50.60.50.50.50.50.50.50.50.30.30.3

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value5744291718169.931015-18.8181.757-14.5853056
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.20.90.60.40.40.40.20.20.3-0.40.0-0.30.61.2

us-gaap:DeferredTaxAssetsLiabilitiesNet us-gaap:ConsolidatedEntities

srt:Subsidiaries


Deferred
Period End2020-12-312019-12-312018-12-31
Value0.50.60.3
Percentage of DeferredTaxAssetsLiabilitiesNet0.91.41.0
Percentage of Assets0.00.00.0
Percentage of Assets srt:Subsidiaries0.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value211819181919212020170.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.30.40.40.40.40.40.40.40.40.40.0

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value234771201299892250409420476442523470
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.71.72.62.82.12.05.28.58.810.19.611.39.5

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, pra:AllOther


Equity
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
Value201720191917523843435075
Percentage of EquitySecuritiesFvNi8.922.316.814.920.218.521.09.310.39.211.316.0
Percentage of Assets0.30.40.40.40.40.41.10.80.90.91.11.5
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring pra:AllOther0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, pra:ConsumerOriented


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1.2621.1441.0821.067294140534754
Percentage of EquitySecuritiesFvNi1.10.91.11.211.710.19.711.310.711.6
Percentage of Assets0.00.00.00.00.60.90.81.11.01.1
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring pra:ConsumerOriented0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, pra:EquityFinancialSecurities


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value13101014406058736276
Percentage of EquitySecuritiesFvNi11.58.210.416.116.114.813.915.514.116.2
Percentage of Assets0.30.20.20.30.81.31.21.61.41.5
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring pra:EquityFinancialSecurities0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, pra:EquityIndustrialSecurities


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2.241.7071.5611.286264039484153
Percentage of EquitySecuritiesFvNi1.91.31.61.410.610.09.310.19.411.5
Percentage of Assets0.00.00.00.00.60.80.81.00.91.1
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring pra:EquityIndustrialSecurities0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, pra:UtilitiesEnergyEquitySecurities


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.5640.4360.5680.447214242574654
Percentage of EquitySecuritiesFvNi0.50.30.60.58.510.310.212.110.511.6
Percentage of Assets0.00.00.00.00.40.90.91.21.01.1
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring pra:UtilitiesEnergyEquitySecurities0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:FixedIncomeFunds


Equity
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
Value212606972413458164174178174156
Percentage of EquitySecuritiesFvNi90.777.757.855.742.137.723.340.241.637.439.533.3
Percentage of Assets3.31.31.51.50.90.71.23.43.73.83.83.2
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:FixedIncomeFunds0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel12And3, us-gaap:FairValueMeasurementsRecurring, pra:AllOther


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value20172019191752
Percentage of EquitySecuritiesFvNi8.922.316.814.920.218.521.0
Percentage of Assets0.30.40.40.40.40.41.1
Percentage of Assets us-gaap:FairValueInputsLevel12And3 us-gaap:FairValueMeasurementsRecurring pra:AllOther0.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel12And3, us-gaap:FairValueMeasurementsRecurring, pra:ConsumerOriented


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.2621.1441.0821.06729
Percentage of EquitySecuritiesFvNi1.10.91.11.211.7
Percentage of Assets0.00.00.00.00.6
Percentage of Assets us-gaap:FairValueInputsLevel12And3 us-gaap:FairValueMeasurementsRecurring pra:ConsumerOriented0.00.00.00.00.0

us-gaap:FairValueInputsLevel12And3, us-gaap:FairValueMeasurementsRecurring, pra:EquityFinancialSecurities


Equity
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.851310101440
Percentage of EquitySecuritiesFvNi0.411.58.210.416.116.1
Percentage of Assets0.00.30.20.20.30.8
Percentage of Assets us-gaap:FairValueInputsLevel12And3 us-gaap:FairValueMeasurementsRecurring pra:EquityFinancialSecurities0.00.00.00.00.00.0

us-gaap:FairValueInputsLevel12And3, us-gaap:FairValueMeasurementsRecurring, pra:EquityIndustrialSecurities


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value2.241.7071.5611.28626
Percentage of EquitySecuritiesFvNi1.91.31.61.410.6
Percentage of Assets0.00.00.00.00.6
Percentage of Assets us-gaap:FairValueInputsLevel12And3 us-gaap:FairValueMeasurementsRecurring pra:EquityIndustrialSecurities0.00.00.00.00.0

us-gaap:FairValueInputsLevel12And3, us-gaap:FairValueMeasurementsRecurring, pra:UtilitiesEnergyEquitySecurities


Equity
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-31
Value0.0780.5640.4360.5680.44721
Percentage of EquitySecuritiesFvNi0.00.50.30.60.58.5
Percentage of Assets0.00.00.00.00.00.4
Percentage of Assets us-gaap:FairValueInputsLevel12And3 us-gaap:FairValueMeasurementsRecurring pra:UtilitiesEnergyEquitySecurities0.00.00.00.00.00.0

us-gaap:FairValueInputsLevel12And3, us-gaap:FairValueMeasurementsRecurring, us-gaap:FixedIncomeFunds


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value212606972413458
Percentage of EquitySecuritiesFvNi90.777.757.855.742.137.723.3
Percentage of Assets3.31.31.51.50.90.71.2
Percentage of Assets us-gaap:FairValueInputsLevel12And3 us-gaap:FairValueMeasurementsRecurring us-gaap:FixedIncomeFunds0.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, pra:UtilitiesEnergyEquitySecurities


Equity
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.0780.00.00.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring pra:UtilitiesEnergyEquitySecurities0.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, pra:EquityFinancialSecurities


Equity
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.850.00.00.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.40.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:FairValueMeasurementsRecurring pra:EquityFinancialSecurities0.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:FixedIncomeFunds


Equity
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.0020.00.00.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:FairValueMeasurementsRecurring us-gaap:FixedIncomeFunds0.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, pra:AllOther


Equity
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value20523843435075
Percentage of EquitySecuritiesFvNi16.821.09.310.39.211.316.0
Percentage of Assets0.41.10.80.90.91.11.5
Percentage of Assets us-gaap:FairValueMeasurementsRecurring pra:AllOther0.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, pra:ConsumerOriented


Equity
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1.262294140534754
Percentage of EquitySecuritiesFvNi1.111.710.19.711.310.711.6
Percentage of Assets0.00.60.90.81.11.01.1
Percentage of Assets us-gaap:FairValueMeasurementsRecurring pra:ConsumerOriented0.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, pra:EquityFinancialSecurities


Equity
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value13406058736276
Percentage of EquitySecuritiesFvNi11.516.114.813.915.514.116.2
Percentage of Assets0.30.81.31.21.61.41.5
Percentage of Assets us-gaap:FairValueMeasurementsRecurring pra:EquityFinancialSecurities0.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, pra:EquityIndustrialSecurities


Equity
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2.24264039484153
Percentage of EquitySecuritiesFvNi1.910.610.09.310.19.411.5
Percentage of Assets0.00.60.80.81.00.91.1
Percentage of Assets us-gaap:FairValueMeasurementsRecurring pra:EquityIndustrialSecurities0.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, pra:UtilitiesEnergyEquitySecurities


Equity
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0.564214242574654
Percentage of EquitySecuritiesFvNi0.58.510.310.212.110.511.6
Percentage of Assets0.00.40.90.91.21.01.1
Percentage of Assets us-gaap:FairValueMeasurementsRecurring pra:UtilitiesEnergyEquitySecurities0.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:FixedIncomeFunds


Equity
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value6958164174178174156
Percentage of EquitySecuritiesFvNi57.823.340.241.637.439.533.3
Percentage of Assets1.51.23.43.73.83.83.2
Percentage of Assets us-gaap:FairValueMeasurementsRecurring us-gaap:FixedIncomeFunds0.00.00.00.00.00.00.0

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
Value1551271431261341001111041271121111101061151011091011019698948910690989293100141127329127141120234837980817482808489
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.52.73.12.72.82.12.32.22.72.42.42.42.32.52.12.22.12.11.92.01.91.82.21.82.01.81.81.92.62.46.42.62.82.34.81.71.61.61.61.51.71.61.71.9

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value28404533
Percentage of OtherAssets20.036.640.933.4
Percentage of Assets0.60.81.00.7
Percentage of Assets srt:ParentCompany1.82.32.51.5

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4582842842842852852852862872872872882883714114004483503503502502502502502500.01251251250.04949494951515150
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.26.16.16.16.06.05.95.96.06.16.36.26.37.98.48.18.87.17.06.84.84.74.64.64.90.02.42.42.60.01.01.01.01.01.01.01.01.1

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities

srt:ParentCompany


Long
Period End2020-12-312019-12-312018-12-31
Value248248248
Percentage of LongTermDebt87.486.986.5
Percentage of Assets5.35.25.4
Percentage of Assets srt:ParentCompany15.413.913.6

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value4078000.02608000.03306000.03175000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0
Percentage of Assets0.10.10.10.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value2500000.02026000.02608000.02473000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0
Percentage of Assets0.00.00.10.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value1969000.01783000.02026000.01887000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value1783000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value8875000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.2

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value231920202021222121180.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.40.40.40.40.40.50.50.40.40.40.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value25212222
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0
Percentage of Assets0.40.50.50.5

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-30
Value2067000.02487000.02627000.02738000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0
Percentage of Assets0.00.10.10.1

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1424132113491329147414271511158915811561152315861574156915941850183818251798204220281984195820062057212821572321236023512394237323362361227023492278221621642021196618841855181817921757170414231255
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets22.428.329.028.330.830.231.532.933.033.133.134.134.433.532.437.637.837.535.540.740.840.539.940.441.141.641.743.643.743.546.547.845.745.246.647.245.644.043.340.539.938.438.10.00.00.036.70.00.0

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value1349151115231594
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets29.031.533.132.4
Percentage of Assets srt:ParentCompany83.484.483.470.7

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-0.096-0.104-0.104-0.1-0.0780.0780.078-0.074-0.0690.0640.057-0.039
Percentage of StockholdersEquity-0.0-0.0-0.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value5341756861-4.913639318.655-16.911-20.107-16.143-8.046142526201756614723364165586781705970751371451581401331301229974791321047259-35.8989.902
Percentage of StockholdersEquity3.73.15.65.14.1-0.32.42.52.00.6-1.1-1.3-1.0-0.50.91.41.41.11.02.83.02.41.21.82.03.12.72.93.53.02.53.03.25.86.46.86.16.06.06.15.14.04.37.35.84.13.5-2.50.8
Percentage of Assets0.80.91.61.51.3-0.10.80.80.70.2-0.4-0.4-0.4-0.20.30.50.50.40.31.11.21.00.50.70.81.31.11.31.51.31.21.41.52.63.03.22.82.62.62.52.01.51.60.00.00.01.30.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value390388388387386384384385385383384384383380383380379375376371370366365364362359359357355351349347345342341543543539538532526518505
Percentage of StockholdersEquity27.429.428.829.126.227.025.424.224.424.625.324.224.324.224.020.620.720.620.918.218.318.518.718.217.616.916.715.415.114.914.614.614.814.515.123.123.924.424.928.730.936.440.3
Percentage of Assets6.18.38.38.38.18.18.08.08.08.18.48.38.48.17.87.77.87.77.47.47.47.57.47.47.27.07.06.76.66.56.87.06.86.67.010.910.910.710.810.911.30.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value-0.057-0.057-0.7040.8170.3-0.219-0.190.190.121-0.503
Percentage of StockholdersEquity-0.0-0.0-0.00.10.0-0.0-0.00.00.0-0.0
Percentage of Assets-0.0-0.0-0.00.00.0-0.0-0.00.00.0-0.0
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent0.00.00.00.00.00.00.00.00.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Stockholders
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
Value5341756861-5.8053639318.401-17.08915
Percentage of StockholdersEquity3.73.25.65.14.2-0.42.42.52.00.5-1.11.0
Percentage of Assets0.80.91.61.51.3-0.10.80.80.70.2-0.40.3
Percentage of Assets us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-03-312010-12-312009-12-312008-12-312007-12-31
Value0.6330.6330.6320.6320.6320.6320.6310.6310.6310.6310.630.630.630.630.6280.6280.6280.6280.6270.6270.6270.6260.6250.6250.6250.6250.6230.6230.6230.6230.6210.6210.6210.6210.6190.3470.3473350.3463340.3440.3420.3410.336
Percentage of StockholdersEquity0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.015.20.017.70.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.06.70.06.80.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value13951306130112891442146315051581158115861571163916251614161418641851184818242034201719901988202220282012199120942076204420151963191518801782185117981747169915661530147514281325127412341196970793
Percentage of StockholdersEquity98.098.996.497.097.8102.599.699.5100.0101.6103.2103.3103.2102.9101.2100.7100.7101.3101.499.699.5100.3101.5100.898.694.592.390.288.086.984.282.782.079.678.578.879.078.878.577.577.978.376.972.971.170.270.268.263.2
Percentage of Assets21.927.928.027.530.130.931.332.833.033.634.235.235.534.532.737.838.137.936.040.640.540.740.540.840.639.338.539.338.537.839.139.537.536.036.637.236.034.734.031.431.130.129.30.00.00.025.70.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarningsUnappropriated


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value266467165239441592239572
Percentage of StockholdersEquity19.830.910.915.024.530.211.123.9
Percentage of Assets5.79.73.64.98.712.14.611.1
Percentage of Assets us-gaap:RetainedEarningsUnappropriated0.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-415.962-415.962-415.962-415.962-415.962-415.962-415.962-417.277-417.277-417.277-417.277-418.009-418.009-418.009-418.007-419.928-419.928-419.928-419.93-421.666-421.666-420.861-419.56-417.342-375.465-309.321-252.164-198.378-153.646-115.023-31.365-8.02-0.056-0.056-0.056-204.408-204.408-204.408-204.408-183.844-77.497-30.436-54.257
Percentage of StockholdersEquity-29.2-31.5-30.8-31.3-28.2-29.1-27.5-26.3-26.4-26.7-27.4-26.3-26.5-26.6-26.2-22.7-22.8-23.0-23.3-20.6-20.8-21.2-21.4-20.8-18.3-14.5-11.7-8.5-6.5-4.9-1.3-0.3-0.0-0.0-0.0-8.7-9.0-9.2-9.4-9.9-4.5-2.1-4.3
Percentage of Assets-6.5-8.9-8.9-8.9-8.7-8.8-8.7-8.6-8.7-8.8-9.1-9.0-9.1-8.9-8.5-8.5-8.6-8.6-8.3-8.4-8.5-8.6-8.5-8.4-7.5-6.0-4.9-3.7-2.8-2.1-0.6-0.2-0.0-0.0-0.0-4.1-4.1-4.1-4.1-3.8-1.70.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value633000.0633000.0632000.0632000.0632000.0632000.0631000.0631000.0631000.0631000.0630000.0630000.0630000.0630000.0628000.0628000.0628000.0628000.0627000.0627000.0627000.0626000.0625000.0625000.0625000.0625000.0623000.0623000.0623000.0623000.0621000.0621000.0621000.0621000.0619000.0347000.0347000.0346000.0346000.0345000.0345000.0345000.0344000.0342000.0
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 Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value632000.0631000.0630000.0628000.0
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

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
Value390388388387386384384385385383384384383380383380379375376371370366365364362359359357355351349347345342341543543539538537535533532526
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 Assets6.18.38.38.38.18.18.08.08.08.18.48.38.48.17.87.77.87.77.47.47.47.57.47.47.27.07.06.76.66.56.87.06.86.67.010.910.910.710.810.810.910.910.911.3

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
Value13951306130112891442146315051581158115861571163916251614161418641851184818242034201719901988202220282012199120942076204420151963191518801782185117981747169915661530147514281196
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 Assets21.927.928.027.530.130.931.332.833.033.634.235.235.534.532.737.838.137.936.040.640.540.740.540.840.639.338.539.338.537.839.139.537.536.036.637.236.034.734.031.431.130.129.325.7

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
Value5341756861-4.913639318.655-16.911-20.107-16.143-8.0461425262017566147233641655867817059707513714515814013313012299747959
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 Assets0.80.91.61.51.3-0.10.80.80.70.2-0.4-0.4-0.4-0.20.30.50.50.40.31.11.21.00.50.70.81.31.11.31.51.31.21.41.52.63.03.22.82.62.62.52.01.51.61.3

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value415415415415415415415417417417417418418418418419419419419421421420419417375309252198153115318.020.0560.0560.05620420420420420419919918377
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.58.98.98.98.78.88.78.68.78.89.19.09.18.98.58.58.68.68.38.48.58.68.58.47.56.04.93.72.82.10.60.20.00.00.04.14.14.14.14.14.04.13.81.7

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.1531.0240.7841.0171.0271.0171.203-0.0111.0831.2371.1751.6041.5770.9023.5051.0182.7463.3464.9971.6453.12.7151.5282.72.32.7032.0342.42.43.242.3122.22.42.282
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.1531.0240.7841.0171.0271.0171.203-0.0111.0831.2371.1751.6041.5770.9023.5051.0182.7463.3464.9971.6453.0982.7151.5282.6722.2632.7032.0342.3812.4013.242.3122.2222.4262.282
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.9100.0100.099.098.4100.0100.099.2100.0100.0100.0101.0101.1100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.31528197014-12.049194944343080-7.788735044-4.46558404229566.437511636-5.08171-1.3013014360.835-13.107285253282430322847
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.813.08.331.26.5-6.17.820.618.612.817.232.4-3.036.524.419.3-2.226.216.919.113.629.53.529.68.317.7-2.335.3-0.614.67.620.00.5-6.715.625.732.916.114.316.518.117.429.1

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-44.668-26.261-30.483-59.529.6947176-22.997-6.5883.868-19.886-43.115131146-27.635-2.76958196-135.211-47.454-64.439-31.835575615982726-25.952239-369.5326639-3.81240-0.13114-28.033-40.556-23.981140.803-17.637275.994-38.392
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-15.9-11.9-13.3-26.24.436.530.6-9.5-2.71.4-11.1-17.351.472.7-13.2-1.228.588.2-56.9-21.2-30.0-16.530.932.47.547.312.413.0-11.7115.0-191.6146.822.9-2.020.8-0.18.8-15.5-19.6-14.88.10.5-9.515.33.7-23.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-11.686-3.386-4.853-3.5-17.117-17.976-22.444-16.459-17.986-46.901-18.073-16.869-100.535-310.709-7.84-39.706-38.487-270.48283-11.573-16.953-68.935-24.148-58.451-84.374-128.714-72.929-61.151-58.331-102.914205-142.923-15.463-6.802-49.578-63.051-7.276-10.037-7.697-4.904-0.592-17.011-10.341-57.418-37.698-1.178
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.1-1.5-2.1-1.5-7.7-9.1-9.0-6.8-7.5-17.4-10.1-6.8-39.2-154.6-3.7-17.4-18.7-121.335.1-5.2-7.9-35.6-13.0-33.4-41.5-61.9-33.5-30.0-26.2-49.5106.4-78.8-9.1-3.5-25.4-35.8-4.4-5.6-3.7-3.0-0.3-9.8-5.6-31.7-23.3-0.7

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-54.039-0.947-16.1667.687.09941731020-8.641-7.0882023-91.248
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-19.2-0.4-7.03.43.221.329.34.38.4-3.2-3.98.49.2-45.4

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.459-2.2720.852-9.173-2.603-10.224-23.775-9.702-1.7846.618-12.0251.4310.864-2.0949.337-7.666-7.0327.054-5.9227.3561.351-3.0661.7366.7731.51710-2.04714304.4570.4872.523-14.77-0.009-0.17813-0.919-6.811-2.986.31
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2.31528197014-12.049194944343080-7.788735044-4.46558404229566.437511636-5.08171-1.3013014360.835-13.107285253282430322847
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.813.08.331.26.5-6.17.820.618.612.817.232.4-3.036.524.419.3-2.226.216.919.113.629.53.529.68.317.7-2.335.3-0.614.67.620.00.5-6.715.625.732.916.114.316.518.117.429.1

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
Value927.73514-149.979-18.099-21.954-59.375171131-24.4531281117281941543343193410333765344946706350112101605855140435547102514038
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 Revenues32.73.56.2-66.1-8.2-11.2-23.87.14.811.8-13.612.511.15.98.312.79.518.623.115.120.110.018.85.916.318.229.917.122.522.536.734.929.557.951.834.235.730.868.127.031.527.555.028.225.023.2

us-gaap:NetIncomeLoss us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:NBPrivateEquityCreditOpportunitiesFundLP


Net
Period End2021-03-31
Value2.056
Percentage of NetIncomeLoss26.6
Percentage of Revenues0.9
Percentage of Revenues pra:NBPrivateEquityCreditOpportunitiesFundLP0.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value927.73514-149.979-18.099-21.954-59.374171131-24.4531281117281941543343193410333765344946706350112101605855140435547102514038
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 Revenues32.73.56.2-66.1-8.2-11.2-23.87.14.811.8-13.612.511.15.98.312.79.518.623.115.120.110.018.85.916.318.229.917.122.522.536.734.929.557.951.834.235.730.868.127.031.527.555.028.225.023.2
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.1531.0310.7881.021.0211.0111.2040.0031.0921.2281.1761.6281.6150.9023.491.0182.7463.3464.9971.6453.0982.7151.5282.6722.2632.7032.0342.3812.4013.242.3122.22.42.2822.2581.32.92.131.6971.7081.9771.7371.6291.5681.5411.4
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-44.668-26.261-30.483-59.529.6947176-22.997-6.5883.868-19.886-43.115131146-27.635-2.76958196-135.211-47.454-64.439-31.835575615982726-25.952239-369.5326639-3.81240-0.13114-28.033-40.556-23.981140.803-17.637275.994-38.392
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-15.9-11.9-13.3-26.24.436.530.6-9.5-2.71.4-11.1-17.351.472.7-13.2-1.228.588.2-56.9-21.2-30.0-16.530.932.47.547.312.413.0-11.7115.0-191.6146.822.9-2.020.8-0.18.8-15.5-19.6-14.88.10.5-9.515.33.7-23.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-11.686-3.386-4.853-3.5-17.117-17.976-22.444-16.459-17.986-46.901-18.073-16.869-100.535-310.709-7.84-39.706-38.487-270.48283-11.573-16.953-68.935-24.148-58.451-84.374-128.714-72.929-61.151-58.331-102.914205-142.923-15.463-6.802-49.578-63.051-7.276-10.037-7.697-4.904-0.592-17.011-10.341-57.418-37.698-1.178
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.1-1.5-2.1-1.5-7.7-9.1-9.0-6.8-7.5-17.4-10.1-6.8-39.2-154.6-3.7-17.4-18.7-121.335.1-5.2-7.9-35.6-13.0-33.4-41.5-61.9-33.5-30.0-26.2-49.5106.4-78.8-9.1-3.5-25.4-35.8-4.4-5.6-3.7-3.0-0.3-9.8-5.6-31.7-23.3-0.7

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-04-302013-03-312012-12-312012-09-302012-07-312012-06-302012-04-302012-03-312012-01-312011-12-31
Value2.692.6862.6862.6861616161616431616162661616162651616166916161716717171718151515150.01777.6527.77.6487.77.6227.77.617
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value108906246135.9191.87100.00.00.877157.7450.00.00.00.01.7571.3418.0920.07.9622226302032455668
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-312012-09-302012-06-302012-03-312011-12-312010-12-312009-12-31
Value5.85.85.1991111115.074.54.54.43.6015.15.15.25.3418.58.68.48.3538.58.48.38.1950.80.70.60.5770.60.50.54.8234.823232323188.3446.811
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value8581000.05479000.07074000.04116000.01962000.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0

pra:DeferredIncomeTaxCredits us-gaap:TaxCreditCarryforward, us-gaap:TaxPeriod

pra:DeferredIncomeTaxCredits

pra:TaxCreditPartnershipInvestmentTaxCreditCarryforward, us-gaap:TaxYear2020


Deferred
Period End2021-06-302021-03-312020-09-302020-06-30
Value3.43.44.54.5
Percentage of DeferredIncomeTaxCredits100.0100.0100.0100.0

pra:EquityInEarningsLossOfUnconsolidatedSubsidiaries

pra:EquityInEarningsLossOfUnconsolidatedSubsidiaries


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value116.788104.853-25.355-1.562-2.821-1.277-5.152-0.81-3.2995.2285.381.64-0.4564.1642.5161.808
Percentage of EquityInEarningsLossOfUnconsolidatedSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:ExternalCapitalContributionReceivedReturnOfCapitalForSegregatedPortfolioCells

pra:ExternalCapitalContributionReceivedReturnOfCapitalForSegregatedPortfolioCells


External
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-8011000.0-53000.0-1764000.0-435000.0-350000.0204000.0-4041000.0561000.0-982000.0-562000.0-738000.062000.0-580000.0251000.0-53000.02827000.0
Percentage of ExternalCapitalContributionReceivedReturnOfCapitalForSegregatedPortfolioCells100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:GrossPremiumsEarned us-gaap:ProductOrService, us-gaap:StatementBusinessSegments

pra:GrossPremiumsEarned

pra:AlternativeMarketBusiness, pra:WorkersCompensationInsuranceSegment


Gross
Period End2021-06-302021-03-312020-06-302020-03-31
Value17161718
Percentage of GrossPremiumsEarned100.0100.0100.0100.0

pra:AlternativeMarketBusiness, us-gaap:WorkersCompensationInsurance


Gross
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value17171821212020212120
Percentage of GrossPremiumsEarned0.0100.0100.00.00.00.00.00.00.00.0

pra:HCPL, pra:SegregatedPortfolioCellReinsurance


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.1731.8521.4951.6991.7231.6771.9881.3991.349
Percentage of GrossPremiumsEarned12.811.00.00.09.69.30.00.00.0

pra:HCPL, pra:SpecialtyPropertyandCasualty


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value1509794101111103109109108
Percentage of GrossPremiumsEarned886.1574.60.00.0624.6570.80.00.00.0

pra:MedicalTechnologyandLifeSciencesProductLiability, pra:SpecialtyPropertyandCasualty


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-12-312014-09-302014-03-312013-12-312013-09-30
Value9.6138.9388.9918.7498.6418.5298.788.5198.3568.3028.7859.088.788.5128.6768.4598.3898.3128.6098.7568.558.9728.879.2588.7588.88.436
Percentage of GrossPremiumsEarned56.552.90.00.048.347.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pra:OtherPremiums, pra:SpecialtyPropertyandCasualty


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-03-312015-03-312014-12-312014-09-302014-03-312013-12-312013-09-30
Value0.1720.1520.150.1380.1550.3770.160.5911.2120.1360.1220.1130.1190.110.1040.1080.1010.1020.1050.140.2680.3820.3850.420.590.4710.463
Percentage of GrossPremiumsEarned1.00.90.00.00.92.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pra:SmallBusinessUnit, pra:SpecialtyPropertyandCasualty


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value252526262426272727
Percentage of GrossPremiumsEarned152.2153.50.00.0139.1147.00.00.00.0

pra:TraditionalBusiness, pra:WorkersCompensationInsuranceSegment


Gross
Period End2021-06-302021-03-312020-06-302020-03-31
Value43414547
Percentage of GrossPremiumsEarned256.8247.2254.2261.9

pra:TraditionalBusiness, us-gaap:WorkersCompensationInsurance


Gross
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value45454750535049545048
Percentage of GrossPremiumsEarned0.0254.2261.90.00.00.00.00.00.00.0

pra:WorkersCompensationAlternativeMarketBusiness, pra:SegregatedPortfolioCellReinsurance


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value16161716171720202020202019171818
Percentage of GrossPremiumsEarned95.595.40.00.096.096.60.00.00.00.00.00.00.00.00.00.0

pra:GrossPremiumsEarned us-gaap:StatementBusinessSegments

pra:LloydsSyndicates


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value16202122262828262123232319171618
Percentage of GrossPremiumsEarned97.8120.70.00.0147.1155.50.00.00.00.00.00.00.00.00.00.0

pra:HistoricTaxCreditsInvestmentsandOtherTaxBenefitsAmount

pra:HistoricTaxCreditsInvestmentsandOtherTaxBenefitsAmount


Historic
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value50000.050000.0103000.0103000.0103000.0103000.0-309000.0103000.0103000.0103000.0642000.0570000.0693000.0700000.01300000.01400000.0800000.01800000.02100000.02700000.01700000.02600000.0
Percentage of HistoricTaxCreditsInvestmentsandOtherTaxBenefitsAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:ImpairmentLossDebtSecuritiesNoImpairmentPreviouslyRecognized

pra:ImpairmentLossDebtSecuritiesNoImpairmentPreviouslyRecognized


Impairment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0001064000.0328000.00049000.0
Percentage of ImpairmentLossDebtSecuritiesNoImpairmentPreviouslyRecognized0.00.00.0100.0100.00.00.0100.0

pra:ImpairmentLossDebtSecuritiesPortionRecognizedinEarnings

pra:ImpairmentLossDebtSecuritiesPortionRecognizedinEarnings


Impairment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value00345000.01163000.0673000.030000.0049000.0
Percentage of ImpairmentLossDebtSecuritiesPortionRecognizedinEarnings0.00.0100.0100.0100.0100.00.0100.0

pra:ImpairmentLossesInvestments

pra:ImpairmentLossesInvestments


Impairment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0-654000.0582000.01817000.0776000.066000.00136000.0
Percentage of ImpairmentLossesInvestments0.0100.0100.0100.0100.0100.00.0100.0

pra:ImpairmentLossesInvestmentsPortionInOtherComprehensiveLossBeforeTaxPortionAttributableToParent

pra:ImpairmentLossesInvestmentsPortionInOtherComprehensiveLossBeforeTaxPortionAttributableToParent


Impairment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0-654000.0237000.0654000.0103000.036000.0087000.0
Percentage of ImpairmentLossesInvestmentsPortionInOtherComprehensiveLossBeforeTaxPortionAttributableToParent0.0100.0100.0100.0100.0100.00.0100.0

pra:IncomeLossfromHistoricalProjectsEquityMethodInvestments

pra:IncomeLossfromHistoricalProjectsEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0182000.0728000.0264000.0-1762000.0-323000.0-485000.0-695000.0-302000.0-189000.0-10210000.01394000.01506000.0-1900000.0-3000000.0-600000.0-2400000.0-400000.0-2800000.01600000.0-100000.0-200000.0
Percentage of IncomeLossfromHistoricalProjectsEquityMethodInvestments0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:IncomeTaxExpenseBenefitExcludingBusinessAcquisitionTaxEffect

pra:IncomeTaxExpenseBenefitExcludingBusinessAcquisitionTaxEffect


Income
Period End2021-06-302020-06-30
Value220000.0-38686000.0
Percentage of IncomeTaxExpenseBenefitExcludingBusinessAcquisitionTaxEffect100.0100.0

pra:IncomeTaxExpenseBenefitExcludingBusinessAcquisitionTaxEffect us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:Corporate


Income
Period End2021-06-302020-06-30
Value220000.0-38686000.0
Percentage of IncomeTaxExpenseBenefitExcludingBusinessAcquisitionTaxEffect100.0100.0

pra:IncreaseDecreaseInReinsuranceRelatedAssetsAndLiabilities

pra:IncreaseDecreaseInReinsuranceRelatedAssetsAndLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value-3.07712-9.032-11.111174.623254.649-4.747271.0446.239-2.329-9.65111389.719-2.4287.0598.263-0.893112.3821.798-2.1151.3462.7014.519123.3227.287-9.099
Percentage of IncreaseDecreaseInReinsuranceRelatedAssetsAndLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:IncreaseDecreaseInUnrealizedAppreciationDepreciation us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:IncreaseDecreaseInUnrealizedAppreciationDepreciation

pra:NBPrivateEquityCreditOpportunitiesFundLP


Increase
Period End2021-03-31
Value61
Percentage of IncreaseDecreaseInUnrealizedAppreciationDepreciation100.0

pra:OtherInvestmentsRealizedGainLoss

pra:OtherInvestmentsRealizedGainLoss


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
Value1297000.03196000.01441000.0530000.01864000.048000.0652000.0397000.0198000.0379000.0-312000.0561000.0402000.0688000.0766000.0478000.0546000.01172000.0282000.0335000.0447000.052000.0107000.0-361000.0602000.0116000.05000.055000.068000.0198000.00000
Percentage of OtherInvestmentsRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0

pra:OtherNetRealizedInvestmentGainLoss

pra:OtherNetRealizedInvestmentGainLoss


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
Value108.849158.83820-27.51131.1649.30836-46.139123.199-12.517
Percentage of OtherNetRealizedInvestmentGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:PaymentsForFundingOfTaxCreditLimitedPartnerships

pra:PaymentsForFundingOfTaxCreditLimitedPartnerships


Payments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.2760.01.0260.2810.0350.00.0750.247-0.0740.00.0740.00.1130.0740.2830.0370.0560.0070.2540.702110.2440.0690.590.1723.0913.5371.8114.688262.165306.2875.98811127.6714.31
Percentage of PaymentsForFundingOfTaxCreditLimitedPartnerships100.00.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:PaymentsForProceedsFromInvestmentInUnconsolidatedSubsidiaries

pra:PaymentsForProceedsFromInvestmentInUnconsolidatedSubsidiaries


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.1575.3197.3258.6336.955171511103123265.749211110145.613
Percentage of PaymentsForProceedsFromInvestmentInUnconsolidatedSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:PaymentsToAcquireEquitySecuritiesFVNI

pra:PaymentsToAcquireEquitySecuritiesFVNI


Payments
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value386.02309.4082341351325337823677926
Percentage of PaymentsToAcquireEquitySecuritiesFVNI100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:PremiumReceivableAllowanceForCreditLossIncreaseFromAcquisition

pra:PremiumReceivableAllowanceForCreditLossIncreaseFromAcquisition


Premium
Period End2021-06-30
Value2137000.0
Percentage of PremiumReceivableAllowanceForCreditLossIncreaseFromAcquisition100.0

pra:RentalIncomeOwnedProperties

pra:RentalIncomeOwnedProperties


Rental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value600000.0600000.0600000.0700000.0600000.0600000.0600000.0700000.0600000.0600000.0700000.0600000.0500000.0600000.0
Percentage of RentalIncomeOwnedProperties100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:ReturnOfDepositAssets us-gaap:StatementBusinessSegments

pra:ReturnOfDepositAssets

pra:Syndicate1729


Return
Period End2021-06-302020-09-30
Value2432
Percentage of ReturnOfDepositAssets100.0100.0

pra:ReturnOnInvestedCapitalFromUnconsolidatedSubsidiaries

pra:ReturnOnInvestedCapitalFromUnconsolidatedSubsidiaries


Return
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7.6975.6586.8282.407251.585144.3925.361.9387.31319-2.4237.0184.2427.2562.00110
Percentage of ReturnOnInvestedCapitalFromUnconsolidatedSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:SegmentProfitLoss

pra:SegmentProfitLoss


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value347.7351411-18.099-21.954-59.37417
Percentage of SegmentProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0

pra:SegmentProfitLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:LloydsSyndicates


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4.263-2.873-0.8953.7380.11-0.8842.3171.335
Percentage of SegmentProfitLoss12.5-37.1-6.333.6-0.64.0-3.97.8

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.9550.5451.5781.2131.5520.0180.2580.952
Percentage of SegmentProfitLoss2.87.011.010.9-8.6-0.1-0.45.5

us-gaap:OperatingSegments, pra:SpecialtyPropertyandCasualty


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1.015-11.45-10.884-12.45-56.605-18.459-117.367-10.178
Percentage of SegmentProfitLoss3.0-148.0-76.1-111.8312.884.1197.7-59.2

us-gaap:OperatingSegments, pra:WorkersCompensationInsuranceSegment


Segment
Period End2021-06-302021-03-312020-06-302020-03-31
Value1.0631.911.0441.339
Percentage of SegmentProfitLoss3.124.7-5.8-6.1

us-gaap:OperatingSegments, us-gaap:Corporate


Segment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value2619221735-3.9685022
Percentage of SegmentProfitLoss78.6253.4156.7153.7-197.818.1-84.2130.1

us-gaap:OperatingSegments, us-gaap:WorkersCompensationInsurance


Segment
Period End2020-09-302019-09-30
Value1.5192.72
Percentage of SegmentProfitLoss13.615.8

pra:SegregatedPortfolioCellsDividendExpenseIncome

pra:SegregatedPortfolioCellsDividendExpenseIncome


Segregated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-06-302017-03-31
Value2.8641.7426.3163.8544.642-0.5083.2043.621-7.0334.787-0.6655.2552.7851.7478.8112.375
Percentage of SegregatedPortfolioCellsDividendExpenseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:SegregatedPortfolioCellsDividendExpenseIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Segregated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2.8641.7426.3163.8544.642-0.5083.2043.6217.0334.787-0.6655.2552.785
Percentage of SegregatedPortfolioCellsDividendExpenseIncome100.0100.0100.0100.0100.0100.0100.0100.0-100.0100.0100.0100.0100.0

pra:SegregatedPortfolioCellsIncomeTaxExpenseBenefit

pra:SegregatedPortfolioCellsIncomeTaxExpenseBenefit


Segregated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value504000.0356000.0173000.0871000.0480000.0222000.000
Percentage of SegregatedPortfolioCellsIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.00.00.0

pra:SegregatedPortfolioCellsIncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Segregated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value504000.0356000.0173000.0871000.0480000.0222000.000
Percentage of SegregatedPortfolioCellsIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.00.00.0

pra:ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutRate us-gaap:Range, us-gaap:AwardType

pra:ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutRate

srt:Maximum, us-gaap:PerformanceShares


Share
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value198.002.00002.00
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutRate100.00.0100.00.00.00.0100.00.0

srt:Minimum, us-gaap:PerformanceShares


Share
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value49.500.50000.50
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutRate25.00.025.00.00.00.025.00.0

pra:UnderwritingPolicyAcquisitionAndOperatingExpense

pra:UnderwritingPolicyAcquisitionAndOperatingExpense


Underwriting
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value56565759586267616261596159576357575760555456595353515254525242333437323335343234323540323131
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:UnderwritingPolicyAcquisitionAndOperatingExpense us-gaap:ConsolidationItems

us-gaap:IntersegmentElimination


Underwriting
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value-0.626-0.972-0.642-0.642-0.415-0.741-0.554-0.7780.418-0.689-0.703-0.505-0.089-0.173-0.046-0.072-0.055-0.086-0.14-0.419-1.5991.3325.228-0.238-0.077-0.111-0.089-0.187-0.086
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense-1.1-1.7-1.1-1.1-0.7-1.2-0.8-1.30.7-1.1-1.2-0.8-0.1-0.3-0.1-0.1-0.1-0.2-0.2-0.8-3.02.38.8-0.4-0.1-0.2-0.2-0.3-0.2

pra:UnderwritingPolicyAcquisitionAndOperatingExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:LloydsSyndicates


Underwriting
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.7216.5916.7636.9387.2939.1429.2669.411-7.5648.4697.9418.4398.067.2467.1776.7236.851
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense8.311.711.711.712.414.713.715.2-12.113.813.313.613.512.611.311.811.8

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Underwriting
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value5.2935.0255.2355.0365.365.0797.1695.951-5.9055.2356.3565.5165.445.1145.5255.147
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense9.38.99.18.59.18.210.69.6-9.48.510.68.99.18.98.79.0

us-gaap:OperatingSegments, pra:SpecialtyPropertyandCasualty


Underwriting
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value2826262825293129-29.8632928272828292726252626252525262627323333
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense50.746.746.347.243.047.746.148.0-47.648.247.845.247.149.346.547.345.345.544.047.647.944.043.149.549.852.961.262.464.2

us-gaap:OperatingSegments, pra:WorkersCompensationInsuranceSegment


Underwriting
Period End2021-06-302021-03-312020-06-302020-03-31
Value12121314
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense22.321.822.922.8

us-gaap:OperatingSegments, us-gaap:Corporate


Underwriting
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value5.9297.1755.7975.0447.7644.8276.472.682-5.4264.573.4165.0535.6214.6788.2134.9897.7578.315105.0868.1577.5076.8485.1377.1625.371.9423.1891.188
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense10.412.710.08.513.27.89.64.3-8.77.45.78.29.48.212.98.713.414.616.59.115.113.211.69.713.410.53.75.92.3

us-gaap:OperatingSegments, us-gaap:WorkersCompensationInsurance


Underwriting
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1413141414-14.36814141513
Percentage of UnderwritingPolicyAcquisitionAndOperatingExpense25.222.922.820.824.1-22.923.123.724.922.0

pra:UnsettledSecurityTransactionsNet

pra:UnsettledSecurityTransactionsNet


Unsettled
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-12.391-27.025337.31-17.178-12.93721-19.3829.611-5.44-0.2511.22925-22.421-8.90423-6.418-6.296159.055-25.9490.229-2.8121.7028.017-9.2462.82619-15.842-4.024-2.949-0.35821-18.478-1.4533.313-2.309-4.4034.89-3.66937-39.0925712-6.776-15.487
Percentage of UnsettledSecurityTransactionsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount

us-gaap:AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount


Affordable
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value3.333.3244.3594.3694.3694.3698.3394.5314.5314.5314.6194.6184.6244.64.04.64.64.64.64.64.64.64.54.64.64.64.54.6
Percentage of AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss

pra:NORCALGroup


Business
Period End2021-06-302020-06-30
Value32-15.647
Percentage of BusinessAcquisitionsProFormaNetIncomeLoss100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionsProFormaRevenue

pra:NORCALGroup


Business
Period End2021-06-302020-06-30
Value315305
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationAcquisitionRelatedCosts

pra:NORCALGroup


Business
Period End2021-06-302020-06-30
Value200.6
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0100.0

us-gaap:BusinessCombinationAcquisitionRelatedCosts us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Business
Period End2021-06-30
Value16
Percentage of BusinessCombinationAcquisitionRelatedCosts81.1

us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount

us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount


Business
Period End2021-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value740.00.00.00.0-3.70.4940.0350.00.00.00.0
Percentage of BusinessCombinationBargainPurchaseGainRecognizedAmount100.00.00.00.00.0100.0100.00.0100.00.00.00.00.0

us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount us-gaap:BusinessAcquisition

pra:NORCALGroup


Business
Period End2021-05-05
Value74
Percentage of BusinessCombinationBargainPurchaseGainRecognizedAmount0.0

us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Business
Period End2021-06-30
Value74
Percentage of BusinessCombinationBargainPurchaseGainRecognizedAmount100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

pra:NORCALGroup


Business
Period End2021-05-05
Value448
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

pra:NORCALGroup, us-gaap:SubsequentEvent


Business
Period End2021-05-05
Value441
Percentage of BusinessCombinationConsiderationTransferred198.3

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable

pra:NORCALGroup


Business
Period End2021-05-05
Value1800000.0
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable100.0

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual

pra:NORCALGroup


Business
Period End2021-06-30
Value-5.0
Percentage of BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual100.0

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

pra:NORCALGroup


Business
Period End2021-06-30
Value53
Percentage of BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual100.0

us-gaap:CededPremiumsEarned us-gaap:StatementBusinessSegments

us-gaap:CededPremiumsEarned

pra:LloydsSyndicates


Ceded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3.1754.5355.6414.6355.2936.1955.5415.1044.7175.1874.9584.0281.7835.4914.9862.4722.466
Percentage of CededPremiumsEarned100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:SegregatedPortfolioCellReinsurance


Ceded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.1552.0832.2632.1232.1642.212.4512.4392.4142.4372.5022.5132.1772.1322.2432.183
Percentage of CededPremiumsEarned67.945.940.145.840.935.744.247.851.247.050.562.4122.138.845.088.3

pra:SpecialtyPropertyandCasualty


Ceded
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-03-312014-12-312014-09-302014-03-312013-12-312013-09-30
Value1716181918182221191829211717212221182119171413101110
Percentage of CededPremiumsEarned561.9362.7321.7414.1348.6301.3403.4416.9406.1365.4594.6521.9995.5317.3424.4893.9879.30.00.00.00.00.00.00.00.00.0

pra:WorkersCompensationInsuranceSegment


Ceded
Period End2021-06-302021-03-312020-06-302020-03-31
Value20182121
Percentage of CededPremiumsEarned632.6410.6397.2340.6

us-gaap:WorkersCompensationInsurance


Ceded
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value20212124242424252424
Percentage of CededPremiumsEarned437.8397.2340.6443.9488.4515.3469.2508.2609.21359.7

us-gaap:ConcentrationRiskPercentage1 us-gaap:FinancialInstrument, us-gaap:InternalCreditAssessment

us-gaap:ConcentrationRiskPercentage1

pra:CorporateDebtLimitedObservableInputs, pra:NationallyRecognizedStatisticalRatingOrganizationNRSRORatingBBplus


Concentration
Period End2021-03-312020-03-31
Value61.01.0
Percentage of ConcentrationRiskPercentage1100.0100.0

pra:OtherAssetBackedSecurities, pra:NationallyRecognizedStatisticalRatingOrganizationNRSRORatingAAPlus


Concentration
Period End2021-03-31
Value83.0
Percentage of ConcentrationRiskPercentage1136.1

us-gaap:CurrentIncomeTaxExpenseBenefit

us-gaap:CurrentIncomeTaxExpenseBenefit


Current
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-4.0573.0086.4411-36.083-1.852-6.0293.0131.5070.343-2.068-1.637-1.175-1.3287.555136.7-8.278130.3522015147.9053812167.775261920168219215.0594924238.819
Percentage of CurrentIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value0087000.01163000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded0.00.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value0087000.01163000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded0.00.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0552000.00-856000.0-100000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold0.0100.00.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0552000.00-856000.0-100000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold0.0100.00.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value6.0214.2942.9143.9964.5182.4271.7580.6541.0060.3670.350.690.4384.4642.331.724
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value352000.0187000.0235000.0396000.0467000.01403000.045000.0124000.033000.0336000.0627000.01400000.01725000.02047000.01393000.0262000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesTradingRealizedGainLoss

us-gaap:DebtSecuritiesTradingRealizedGainLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-8000.072000.020000.0116000.049000.0103000.092000.08000.02000.0-28000.00-28000.0-73000.0000
Percentage of DebtSecuritiesTradingRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.0

us-gaap:DebtSecuritiesTradingUnrealizedGainLoss

us-gaap:DebtSecuritiesTradingUnrealizedGainLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-226000.0-214000.0-136000.0373000.0382000.0-118000.0-48000.0278000.0265000.0210000.0-56000.0-42000.0-170000.0-49000.000
Percentage of DebtSecuritiesTradingUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-30
Value642000.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-30
Value474000.0
Percentage of DefinedBenefitPlanInterestCost100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-30
Value-168000.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAmortizationAndAccretionNet


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value9.5976.7225.2076.3455.0854.7344.5924.424.6175.0364.7115.5084.9576.0797.7727.0756.1467.8037.288.5388.1188.8537.9694.58111121212119.92212127.87810109.2288.8399.1156.4387.0256.108
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAmortizationAndAccretionNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pra:LloydsSyndicates


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.0160.015-0.030.0030.0140.0090.001-0.001
Percentage of DepreciationAmortizationAndAccretionNet0.20.2-0.60.00.30.20.0-0.0

us-gaap:OperatingSegments, pra:SegregatedPortfolioCellReinsurance


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value0.3610.3160.3050.210.0910.0690.004-0.059
Percentage of DepreciationAmortizationAndAccretionNet3.84.75.93.31.81.50.1-1.3

us-gaap:OperatingSegments, pra:SpecialtyPropertyandCasualty


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value3.1342.1711.8172.6691.681.581.6591.568
Percentage of DepreciationAmortizationAndAccretionNet32.732.334.942.133.033.436.135.5

us-gaap:OperatingSegments, pra:WorkersCompensationInsuranceSegment


Depreciation
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.9030.9030.9220.926
Percentage of DepreciationAmortizationAndAccretionNet9.413.418.119.6

us-gaap:OperatingSegments, us-gaap:Corporate


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5.1833.3172.1962.542.3782.151.9961.955
Percentage of DepreciationAmortizationAndAccretionNet54.049.342.240.046.845.443.544.2

us-gaap:OperatingSegments, us-gaap:WorkersCompensationInsurance


Depreciation
Period End2020-09-302019-09-30
Value0.9230.957
Percentage of DepreciationAmortizationAndAccretionNet14.521.7

us-gaap:DividendsCommonStock

us-gaap:DividendsCommonStock


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value2.72.6992.6942.6942.69316161616164316171626716161626516161669161617167171717181515151697.6767.6667.6637.637
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStock us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value2.72.6992.6942.6942.69316161616164316171626716161626516161669161617167171717181515151697.6767.6667.6637.637
Percentage of DividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-09-30
Value2.72.72.72.72.716161616164316171626716161626549321669161617167171717181515151697.77.77.77.6
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense

us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense


Employee
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value159000.0214000.0215000.0212000.0212000.01000.0229000.0258000.0230000.0342000.0339000.0190000.01211000.0356000.0961000.01171000.01790000.0576000.01100000.01000000.0500000.0900000.0800000.0900000.0700000.0800000.0800000.01100000.0800000.0800000.0800000.0800000.0800000.0500000.01000000.0700000.0600000.0600000.0700000.0600000.0500000.0600000.0500000.0
Percentage of EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value2.0014.1892.6030.031-4.633157.1182.4519.218
Percentage of EquitySecuritiesFvNiRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.7-2.9374.7252.76614-38.4772.899-2.157-2.45932
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-0.1350.00.1430.23-0.2220.1290.0020.00.00.00.00.00.00.00.00.00.00.00.00.00.00.109-0.1090.03.5015.125-0.6833.2312.8653.2951.3010.4331.848-1.0420.419
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.00.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss us-gaap:FinancialInstrument

us-gaap:OtherInvestments


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.1350.00.1430.23-0.2220.1290.0020.00.00.0370.0010.00.0
Percentage of FairValueAssetsMeasuredOnRecurringBasisChangeInUnrealizedGainLoss100.00.0100.0100.0100.0100.0100.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FinancialInstrument, us-gaap:IncomeStatementLocation

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:AssetBackedSecurities, us-gaap:GainLossOnInvestmentsMember1


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0-0.011-0.006-0.0020.00.00.00.00.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AssetBackedSecurities, us-gaap:InvestmentIncome


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0-0.002-0.0080.0-0.010.0-0.041-0.023-0.022-0.1180.00.0010.0010.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.018.2133.3-0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateDebtSecurities, us-gaap:InvestmentIncome


Fair
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.0010.00.00.00.00.00.002-0.037-0.037-0.036-0.038
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0-9.10.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecurities, us-gaap:GainLossOnInvestmentsMember1


Fair
Period End2021-06-30
Value0.001
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0

us-gaap:OtherInvestments, us-gaap:GainLossOnInvestmentsMember1


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-0.1350.00.1430.23-0.2220.1160.0020.0330.0-0.0030.0010.006-0.044
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0-0.0-7150.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:IncomeStatementLocation

us-gaap:GainLossOnInvestmentsMember1


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
Value-0.134-0.011-0.0060.1410.23-0.2220.1160.0020.0330.0-0.0030.001-0.002-0.044-0.0190.0-0.1240.013-0.490.00.0-0.075-0.221-0.3110.00.0020.00.00.0-0.0920.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.0100.0100.0-7050.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InvestmentIncome


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.0-0.001-0.010.0-0.010.0-0.041-0.023-0.022-0.116-0.037-0.036-0.035-0.038-0.038-0.052-0.034-0.039-0.031-0.031-0.025-0.0150.0010.00.00.0170.0130.0120.0120.0140.0-0.001-0.001-0.118
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings10.09.1166.7-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value93000.0-159000.0264000.0-64000.0330000.0-205000.0-70000.088000.061000.0160000.0-72000.03000.0-201000.0-68000.0-97000.0-63000.071000.0-211000.0122000.0330000.0212000.0-78000.0162000.0238000.0-529000.0-264000.0-13000.0-47000.0-1000.0780000.0-190000.0-205000.0-390000.0028000.040000.0-28000.0607000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value82000.0-179000.086000.0-58000.0203000.0-122000.0-22000.014000.053000.0157000.021000.015000.0-111000.0-30000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss88.2112.632.690.661.559.531.415.986.998.1-29.2500.055.244.1

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value13000.020000.0178000.0-6000.0127000.0-83000.0-48000.074000.08000.03000.0-93000.0-12000.0-90000.0-38000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss14.0-12.667.49.438.540.568.684.113.11.9129.2-400.044.855.9

us-gaap:EquitySecurities


Fair
Period End2021-06-30
Value-2000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss-2.2

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312010-09-30
Value24129.1189.4131.4063.4222.352.8410.171.3053.4152.03.225193.1730.5814.8417.0485.9050.1935.9955.060.4812.0841.11615181110235.5922.3549.13818-1.803183.7320.00.00.01.6842.7133.959
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.0037.3577.1498.5131.4063.4220.00.00.00.03.4150.03.22513
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases33.360.178.490.4100.0100.00.00.00.00.0100.00.0100.069.1

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.2154.8751.9690.90.00.00.7251.5450.01.3050.02.00.06.005
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases38.439.921.69.60.00.030.954.40.0100.00.0100.00.030.9

us-gaap:EquitySecurities


Fair
Period End2021-06-30
Value6.583
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases27.4

us-gaap:OtherInvestments


Fair
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.2050.00.01.6251.2960.170.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.90.00.069.145.6100.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value6.0750.3213.4630.1151.2391.7070.6361.592.00.1421.1840.9262.1682.9320.4190.8582.761.7123.1410.7092.5510.8484.4120.6480.5364.7341.9354.0561.1462.1711.2534.051111.7411.6182.1690.670.0250.2440.0753.4367.2163.0537
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.1850.3043.4580.0990.7890.00.4640.0240.00.0060.2530.00.1580.027
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales3.094.799.986.163.70.073.01.50.04.221.40.07.30.9

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.160.0170.0050.0160.451.7070.01.5662.00.1360.9310.9261.6442.905
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales2.65.30.113.936.3100.00.098.5100.095.878.6100.075.899.1

us-gaap:EquitySecurities


Fair
Period End2021-06-30
Value5.73
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales94.3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.03.010.00.00.01.551.3452.7660.4181.20.00.00.5582.0690.01.4120.010.898-0.0012.8190.00.06.6290.0110.00.00.00.01.5490.875270.10.01.7010.09.220.00.00.237190.03.4471.7741.004
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.0100.00.00.00.0100.0100.0100.0100.0100.00.00.0100.0100.00.0100.0100.0100.0100.0100.00.00.0100.0100.00.00.00.00.0100.0100.0100.0100.00.0100.00.0100.00.00.0100.0100.00.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Fair
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
Value0.00.00.00.6050.01.0160.01.20.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.00.00.039.00.036.70.0100.00.00.00.00.0

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.8580.00.00.00.9451.3451.750.00.00.00.00.5582.069
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.028.50.00.00.061.0100.063.30.00.00.00.0100.0100.0

us-gaap:OtherInvestments


Fair
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.02.1520.00.00.00.00.4180.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.071.50.00.00.00.0100.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value9.1287.474103.0891.7292.322.6770.4050.02.151102.277164.7582.4332.9483.9640.9982.1575.112.8050.0062.0370.9185.564.0550.571.1815.2676.120.10.03.6378.6172.0113.536150.01.9531.6845.2053.0194.9511.495
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FinancialInstrument

us-gaap:AssetBackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value7.3566.2418.0241.3781.7290.01.6270.00.00.9516.4922.277101.059
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel380.683.573.744.6100.00.060.80.00.044.261.7100.066.422.3

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.7721.2332.870.00.00.7941.050.00.01.24.0220.05.4973.699
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel319.416.526.30.00.034.239.20.00.055.838.30.033.677.7

us-gaap:OtherInvestments


Fair
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
Value0.01.7110.01.5260.00.4050.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.055.40.065.80.0100.00.00.00.00.00.00.0

us-gaap:GainLossOnSaleOfOtherInvestments

us-gaap:GainLossOnSaleOfOtherInvestments


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302012-12-312012-09-302011-12-312011-09-30
Value-129000.0626000.0156000.0252000.05000.0-7000.0-2000.065000.01000.01000.0-2000.0253000.04000.07000.002000.02000.02000.020000.02000.01000.02000.00138000.0808000.000000924000.016000.01132000.000
Percentage of GainLossOnSaleOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.00.00.00.0100.0100.0100.00.00.0

us-gaap:GoodwillImpairmentLoss

us-gaap:GoodwillImpairmentLoss


Goodwill
Period End2020-12-312020-09-30
Value0.0161
Percentage of GoodwillImpairmentLoss0.0100.0

us-gaap:GoodwillImpairmentLoss us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Goodwill
Period End2020-12-312020-09-30
Value0.0161
Percentage of GoodwillImpairmentLoss0.0100.0

us-gaap:GoodwillImpairmentLoss us-gaap:ReportingUnit

pra:SpecialtyPropertyandCasualty


Goodwill
Period End2020-12-312020-09-30
Value0.015161
Percentage of GoodwillImpairmentLoss0.0100.0

us-gaap:IncomeLossFromAffordableHousingProjectsEquityMethodInvestments

us-gaap:IncomeLossFromAffordableHousingProjectsEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value-4.752-3.368-4.532-4.798-5.012-4.342-4.557-5.077-5.167-4.43-33.2624.6615.612-4.1-3.6-3.4-4.0-3.3-5.1-6.7-3.05.22.52.4-2.62.54.22.5
Percentage of IncomeLossFromAffordableHousingProjectsEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value116.788104.853-25.355-1.562-2.821-1.277-5.152-0.81-3.2995.2285.381.64-0.4564.1642.5161.8080.845-3.3490.376-3.634-0.139-0.2212.421.6221.2190.2980.7191.75111-0.305-2.972-0.223-2.7910.211-2.227-2.066-3.103-2.264-2.416-1.364-1.299-1.2810.8392.986
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:Corporate


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value116.788104.853-25.355-1.562-2.821-1.277-5.152-0.81-3.2995.2285.381.64-0.4564.1642.5161.8080.845-3.3490.376-3.634-0.139-0.2212.421.6221.2190.2980.719
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses

us-gaap:IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses


Income
Period End2020-12-31
Value-118.187
Percentage of IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses100.0

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value4486000.0420000.0-5842000.0788000.0-3916000.0599000.0-2532000.02228000.0-1052000.02807000.0-2134000.04057000.01428000.0504000.0-1430000.01482000.01024000.02376000.0-2800000.01896000.02755000.0570000.0-3274000.03264000.03444000.02164000.0-5259000.0714000.02165000.02370000.0-1246000.02821000.01082000.03163000.0-1864000.0-87000.0-2419000.0922000.0
Percentage of IncreaseDecreaseInDeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1.136219.6911858-15.4781302036392021228.427.68348-5.1243.561-4.5915.218-12.9690.444-16.935-4.436-17.533-14.036-89.189
Percentage of IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


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
Value2.324-13.1510.424-9.44337-14.2689.9290.9951.111.4472.2452.935.285-6.2541.98-3.801-2.4145.0270.746-0.392-0.237-15.78215-11.11.993.919-3.101-39.844.2141.803-43.598-8.04915267.5983.997-3.2842.923.477-5.6392.199-0.65-16.6760.86112-3.565
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


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
Value13-0.83710156.22-17.6046.9898.936-7.6570.504-6.81112-12.708-3.5921217-1.337-7.3936.0251111-14.3395.757-2.62210-12.83515-4.6438.754-13.938-6.725-3.1979.673-36.3220-16.979-2.01-28.81176-23.6210.984-48.24527-4.23313-34.34
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value-32.8769.165-36.4993.054-31.98222-34.4045.116-10.29827-22.2214.042329.559-24.60127101.238-17.427128.1422.849-22.87319106.744-27.27141116-15.77611-2.53513-21.47812-17.97710-17.79118-3.8972.678-9.42813-11.012-0.95
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: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
Value-54.99313-53.63722-50.78730-46.17417-15.68442-29.78723-5.56227-23.125240.35624-33.92121-1.87125-39.9331-2.99227-45.46828-2.99830-25.31421-17.55620-28.42519-35.55322-26.54728-26.36219-19.51318-36.80423
Percentage of IncreaseDecreaseInUnearnedPremiums100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements us-gaap:AwardType

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:PerformanceShares


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value2000.04000.00-1000.003000.0-3000.0010000.029000.011000.048000.042000.066000.05000.088000.0105000.0121000.011000.0132000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestrictedStockUnitsRSU


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value81000.076000.01000.029000.022000.074000.06000.073000.053000.082000.0-8000.083000.069000.082000.04000.087000.077000.078000.02000.075000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements4050.01900.00.0-2900.00.02466.7-200.00.0530.0282.8-72.7172.9164.3124.280.098.973.364.518.256.8

us-gaap:InterestAndDividendIncomeOperating us-gaap:InvestmentType

us-gaap:InterestAndDividendIncomeOperating

pra:ShortTermInvestmentsAndOtherInvestedAssets


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
Value0.6780.2730.2970.4050.5091.4722.0272.0121.6191.8351.6811.331.3321.3084.8671.1470.9780.8010.8521.4660.6780.4050.6320.5150.3960.5044.112.7930.5181.4120.072.00.0660.448
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CashSurrenderValue


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
Value0.6860.4440.4550.6550.4570.4560.460.6450.4590.4530.4580.6210.4550.4490.4620.620.4420.4550.4710.6390.4390.460.4640.6580.4740.4560.4620.6460.4520.4460.4520.6330.4390.436
Percentage of InterestAndDividendIncomeOperating101.2162.6153.2161.789.831.022.732.128.424.727.246.734.234.39.554.145.256.855.343.664.7113.673.4127.8119.790.511.223.187.331.6645.731.6665.297.3

us-gaap:DebtSecurities


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value181516161718181818171717171717181820212121222324252426282828283032303232
Percentage of InterestAndDividendIncomeOperating2678.05748.05537.04173.33472.71242.2909.7912.61128.8954.61053.01295.31314.31305.8365.41649.91926.52512.02466.01434.13128.05574.13676.94684.96319.44952.2644.61018.35582.81985.940540.01533.648727.36887.10.00.0

us-gaap:EquitySecurities


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.4480.6940.7710.7060.9851.9093.8953.9424.994.8235.8655.6874.9984.8674.7614.4954.2983.6443.9043.7793.5613.6433.3433.5063.4563.0133.3382.6612.5512.2672.4542.3942.4222.1832.3911.907
Percentage of InterestAndDividendIncomeOperating66.1254.2259.6174.3193.5129.7192.2195.9308.2262.8348.9427.6375.2372.197.8391.9439.5454.9458.2257.8525.2899.5529.0680.8872.7597.881.295.3492.5160.63505.7119.73669.7487.30.00.0

us-gaap:InvestmentIncomeInvestmentExpense

us-gaap:InvestmentIncomeInvestmentExpense


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2552000.02086000.01847000.01744000.01503000.01292000.01590000.01280000.01804000.01810000.01498000.01600000.01907000.01677000.01804000.01457000.01882000.01835000.01509000.01647000.01303000.01643000.01218000.01864000.01396000.01628000.01634000.01712000.02215000.02434000.01371000.01810000.01820000.01795000.01696000.01487000.01729000.01697000.01792000.01620000.01635000.01531000.01441000.01458000.01385000.0
Percentage of InvestmentIncomeInvestmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1144000.0884000.0909000.0863000.0853000.01587000.01335000.01146000.01103000.0736000.01229000.01204000.01227000.01216000.0
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value211022281615453022174735191442300.033340244.2426
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
Value1561261011041321631201171121099799114101768312980898912480
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:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1


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
Value181149140145210164264161168159154147161129105129115119107118106110
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LifeInsuranceCorporateOrBankOwnedChangeInValue

us-gaap:LifeInsuranceCorporateOrBankOwnedChangeInValue


Life
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-03-31
Value685000.0-915000.0454000.0368000.0456000.0457000.0459000.0645000.0459000.0453000.0458000.0621000.0455000.0449000.0461000.0621000.0442000.0455000.0471000.0638000.0439000.0460000.0456000.0
Percentage of LifeInsuranceCorporateOrBankOwnedChangeInValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value15-30.4159.189.48368-41.98-1.3557.82325
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Oci
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.008-0.004-0.0220.00.0-0.004-0.005-0.0050.007
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.1-0.0-0.20.0-0.00.3-0.1-0.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent


Oci
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.517-0.1870.517-0.081-0.0290.00.069
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.05.5-0.3-1.26.0-0.40.00.3

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value15-30.4159.1849.50569-42.497-1.277.8342325
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent99.9100.0100.0100.2100.3101.293.7100.4100.099.7

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeaseExpense


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1214000.0938000.0934000.0905000.0891000.01625000.01373000.01184000.01141000.0774000.01256000.01246000.01261000.01254000.0
Percentage of OperatingLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1444000.01089000.0-165000.0-179000.0-142000.0613000.0241000.0-22000.0-52000.0809000.051000.068000.060000.0118000.0
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value11-33.7056.9427.15566-41.865-2.1797.40523253.196-3.964-8.096-26.373-10.548-0.6055.7412.924-38.916-4.9741423-12.241-4.953-24.8287.673-8.803-14.6461110-10.412-4.989-62.564-7.754-13.556187.0023.012
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.008-0.004-0.0220.00.0-0.004-0.005-0.0050.007
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.1-0.1-0.30.0-0.00.2-0.1-0.00.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.00.0570.00.6470.1130.517-0.081-0.0290.00.069
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.0-0.20.09.00.2-1.23.7-0.40.00.3

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value11-33.7626.9466.5365-42.382-2.0947.4392325
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent99.9100.2100.191.399.8101.296.1100.5100.099.7

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value3.2-8.31.91.916-11.0-0.82.06.2
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense

us-gaap:OtherNoncashIncomeExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value-859000.0661000.0196000.0150000.0-3458000.0703000.0-149000.0-383000.0-306000.0-1337000.0-678000.0306000.0-44000.0-752000.0-656000.0110000.0271000.0167000.0-3998000.080000.03117000.0-971000.0-1075000.0149000.0-4182000.04856000.02804000.0-400000.08437000.0-2057000.0-5353000.02311000.0-248000.06304000.084000.0-513000.0348000.02588000.0-3219000.0554000.0-983000.0757000.013794000.0
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses

us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses


Other
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value00258000.0-30000.030000.000000000002154000.01161000.0623000.0861000.000000000000201000.067000.00142000.0394000.0888000.0
Percentage of OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsAdditionsAdditionalCreditLosses0.00.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.0100.0100.00.0100.0100.0100.0

us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold

us-gaap:OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-30
Value0552000.00770000.0470000.000001220000.000016000.00362000.01799000.03240000.03744000.0481000.00293000.0000000330000.02888000.002837000.000
Percentage of OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold0.0100.00.0100.0100.00.00.00.00.0100.00.00.00.0100.00.0100.0100.0100.0100.0100.00.0100.00.00.00.00.00.00.0100.0100.00.0100.00.00.0

us-gaap:OtherUnderwritingExpense

us-gaap:OtherUnderwritingExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value5031303233343632
Percentage of OtherUnderwritingExpense100.0100.0100.0100.0100.0100.0100.0100.0

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
Value178137123132149179166147134126145134134115119114129113130113128106
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 End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.199-0.331-1.0642.206-0.011-0.001-0.0130.03-0.0261.331-17.98176.6352.671.234-1.159-6.312-2.1262.5461.10.991-3.7522.4092.8577.8572.598-1.097-4.9682.9914.6822.5241.047-1.2411.0313.2621.3580.19-1.847-0.799120.1710.543-10.96713
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

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
Value9.849-56.836-39.91-100.5671307.44168-16.35269-90.698103-8.46-136.077-82.97613730-11.458-160.792187485829-38.7931329-16.47936-77.76911-110.84313228-61.96576-96.795-0.424351322-32.077-16.589-22.948-178.61849137-35.252
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 End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value423342227317144227142202171179631641843671649019816095167173199114901602151331462351301139820610011218699247184144200252177205219238
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition

us-gaap:PaymentsToAcquireBusinessesGross

pra:NORCALGroup


Payments
Period End2021-05-05
Value248
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireBusinessesGross us-gaap:BusinessAcquisition, us-gaap:SubsequentEventType

pra:NORCALGroup, us-gaap:SubsequentEvent


Payments
Period End2021-05-05
Value248
Percentage of PaymentsToAcquireBusinessesGross100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value15339.1845.194156.0654.763109.1674.6029.5967.3298.127.10814264.9493.932.7814.451.7599.6238.0069.5746.4989.2880.05.574145.246264.1210.1893.6160.4389.3810.00.1584.2420.00.00.128
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.00.0100.0

us-gaap:PaymentsToAcquireOtherProductiveAssets

us-gaap:PaymentsToAcquireOtherProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1865000.01243000.0813000.02182000.01733000.02750000.02453000.02091000.0
Percentage of PaymentsToAcquireOtherProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PremiumReceivableCreditLossExpenseReversal

us-gaap:PremiumReceivableCreditLossExpenseReversal


Premium
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value352000.0105000.0211000.0123000.0405000.088000.0
Percentage of PremiumReceivableCreditLossExpenseReversal100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value44000.078000.0245000.0270000.041000.048000.0
Percentage of PremiumsReceivableAllowanceForDoubtfulAccountsRecoveries100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value886000.0232000.0941000.0404000.016000.0689000.0
Percentage of PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsWrittenNet us-gaap:ProductOrService

us-gaap:PremiumsWrittenNet

pra:RetroactiveInsuranceContract


Premiums
Period End2021-06-302021-03-31
Value0.04.5
Percentage of PremiumsWrittenNet0.0100.0

pra:RetroactiveInsuranceContractProspectiveCoverage


Premiums
Period End2021-06-302021-03-31
Value0.02.2
Percentage of PremiumsWrittenNet0.048.9

pra:RetroactiveInsuranceContractRetroactiveCoverage


Premiums
Period End2021-06-302021-03-31
Value0.02.3
Percentage of PremiumsWrittenNet0.051.1

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital

us-gaap:ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value1917135.089201.4816.576255.4955.305351224119.5671316179.2272.543.5371.6434.6279.7719.464.1591.578
Percentage of ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLinesOfCredit us-gaap:DebtInstrument, us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:ProceedsFromLinesOfCredit

us-gaap:RevolvingCreditFacility, us-gaap:LineOfCredit, us-gaap:SubsequentEvent


Proceeds
Period End2021-05-06
Value15
Percentage of ProceedsFromLinesOfCredit100.0

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-7000.0-257000.0-28000.0-3000.0186000.0-1090000.0-1412000.0-40000.0-24000.0-2639000.0-404000.0-1000.0-27000.0-3877000.0-2723000.0-9000.0-19000.0-4932000.0-1042000.0-75000.0-97000.0-2532000.0-580000.0173000.0-1030000.0-4346000.01015000.0-1000.0151000.0-5580000.0-2092000.0-411000.0-143000.0-6802000.0-4404000.02261000.0372000.0-2415000.0-1910000.01116000.0-592000.0-2018000.035000.0-2160000.01470000.0-1178000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForTradingSecurities

us-gaap:ProceedsFromPaymentsForTradingSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value-1040000.03163000.04510000.0-6481000.01995000.0-407000.0-1915000.0-1853000.0
Percentage of ProceedsFromPaymentsForTradingSecurities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities


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
Value367195166202252180151139158119104150198459332165262171170194161225148218196323217144231110188409200173260233180252203137237211183274337165
Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312010-09-30
Value11128.2457.411136.0264.4349.8689.9774.7387.9627.1288.6336.0928.8933.795.9016.7882.8453.7362.3864.83156.4518.8663.0524.8684.7869.8910.3970.00.9880.01.3640.5920.0230.0790.4860.1770.1640.0370.0
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment

us-gaap:ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value30282222.9751315721047762572632451293044412814212063157482311722622736322621106.882169.7386.74
Percentage of ProceedsFromSaleAndMaturityOfTradingSecuritiesHeldforinvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1966149861526461216131436111537922074
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4376000.03290000.0-13558000.02328000.02932000.0-115000.0-3126000.0395000.0769000.0-13000.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithAllowanceForCreditLossParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0-57000.0860000.0-647000.0-300000.0000
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent0.0-1.7-6.3-27.8-10.2-0.00.0-0.0

us-gaap:AociGainLossDebtSecuritiesAvailableForSaleWithoutAllowanceForCreditLossParent


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value4376000.03347000.0-14418000.02975000.03232000.0-115000.0-3126000.0395000.0769000.0-13000.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.0101.7106.3127.8110.2100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLinesOfCredit us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RepaymentsOfLinesOfCredit

us-gaap:RevolvingCreditFacility, us-gaap:SubsequentEvent


Repayments
Period End2021-08-06
Value15
Percentage of RepaymentsOfLinesOfCredit100.0

us-gaap:RepaymentsOfSecuredDebt

us-gaap:RepaymentsOfSecuredDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value150.390.3750.3760.3750.3760.3610.3620.3620.3620.3490.3490.3490.3490.00.00.0
Percentage of RepaymentsOfSecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:RepaymentsOfSecuredDebt us-gaap:LongtermDebtType

us-gaap:Mortgages


Repayments
Period End2021-06-30
Value15
Percentage of RepaymentsOfSecuredDebt97.6

us-gaap:RepaymentsOfSecuredDebt us-gaap:LongtermDebtType, us-gaap:SubsequentEventType

us-gaap:Mortgages, us-gaap:SubsequentEvent


Repayments
Period End2021-07-15
Value19
Percentage of RepaymentsOfSecuredDebt0.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value873000.0478000.01707000.0000
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueOther

us-gaap:StockIssuedDuringPeriodValueOther


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value678000.08000.08000.08000.0642000.033000.0-482000.020000.0636000.0176000.0-304000.034000.01194000.0120000.01005000.0-3000.0938000.0940000.01284000.0-47000.0686000.01509000.01558000.0-11000.0812000.01270000.01292000.0223000.01269000.01416000.01278000.02000.0866000.01939000.01381000.00559000.01654000.0
Percentage of StockIssuedDuringPeriodValueOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueOther us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value678000.08000.08000.08000.0642000.033000.0-1797000.020000.0636000.0176000.0-1036000.034000.01194000.0122000.0-916000.0-3000.0938000.0938000.0-451000.0-47000.0685000.01509000.0-839000.0-11000.0812000.01270000.0-40000.0-6000.01269000.01416000.0133000.02000.0866000.01939000.0828000.00559000.01654000.0
Percentage of StockIssuedDuringPeriodValueOther100.0100.0100.0100.0100.0100.0372.8100.0100.0100.0340.8100.0100.0101.7-91.1100.0100.099.8-35.1100.099.9100.0-53.9100.0100.0100.0-3.1-2.7100.0100.010.4100.0100.0100.060.00.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-7000.0-257000.0-28000.0-4000.0-36000.0-868000.0-36000.0-28000.0-13000.0-2631000.0-64000.0-1000.0-20000.0-3849000.0-107000.0-7000.0-9000.0-5314000.0-20000.0-29000.0-86000.0-2895000.0-167000.0-14000.020000.0-4413000.0-196000.05000.0181000.0-3000000.0-98000.0-522000.0-37000.0-3409000.0-706000.0-1369000.062000.0-2440000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-7000.0-258000.0-28000.0-4000.0-36000.0-869000.0-36000.0-28000.0-13000.0-2632000.0-64000.0-1000.0-20000.0-3851000.0-107000.0-7000.0-9000.0-5315000.0-21000.0-29000.0-86000.0-2896000.0-167000.0-14000.020000.0-4415000.0-196000.05000.0181000.0-3002000.0-98000.0-522000.0-37000.0-3411000.0-707000.0-1369000.061000.0-2440000.0
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.4100.0100.0100.0100.1100.0100.0100.0100.0100.0100.0100.0100.1100.0100.0100.0100.0105.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.1100.0100.0100.0100.1100.1100.098.4100.0

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value01000.00001000.00001000.00002000.00001000.01000.0001000.00002000.00002000.00002000.01000.001000.00
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-0.0-0.4-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0-5.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.00.00.0-0.1-0.0-0.0-0.0-0.1-0.1-0.01.6-0.0

us-gaap:SubleaseIncome

us-gaap:SubleaseIncome


Sublease
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value70000.054000.025000.042000.038000.038000.038000.038000.038000.038000.027000.042000.034000.038000.0
Percentage of SubleaseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value195154155157228170233177184170179169184152149161144147156147143139149145139138124142141137116110109110
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense us-gaap:ProductOrService

pra:RetroactiveInsuranceContract


Supplemental
Period End2021-06-302021-03-312019-12-312019-09-302018-12-312018-09-30
Value0.02.90.02.10.00.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense0.01.90.01.20.00.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense us-gaap:StatementBusinessSegments

pra:SpecialtyPropertyandCasualty


Supplemental
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value437503.75.57.1
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense280.732.31.63.23.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-13.767-4.849-15.842-11.465-17.05-6.04230-15.941-15.995-10.277-24.967-21.549-22.815-22.786-44.297-32.275-29.012-28.776-49.292293628-56.333635-33.5-48.83-42.9-42.213-48.139-81.799-49.4-38.5-53.1
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:StatementBusinessSegments

pra:SpecialtyPropertyandCasualty


Supplemental
Period End2020-12-312020-09-30
Value-36.680.0
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense231.5-0.0

us-gaap:UnrealizedGainLossOnHybridInstrumentNet

us-gaap:UnrealizedGainLossOnHybridInstrumentNet


Unrealized
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value529000.0-190000.04040000.01170000.03913000.0-5273000.01056000.0-408000.01110000.01895000.0-2723000.0-260000.090000.0-954000.0275000.023000.0285000.0313000.0-77000.0880000.0162000.0-66000.0773000.0-971000.0-968000.0270000.0595000.0-538000.0
Percentage of UnrealizedGainLossOnHybridInstrumentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:AmountDueFromReinsurersNet

pra:AmountDueFromReinsurersNet


Amount
Period End2020-12-312014-12-312013-12-31
Value395259237
Percentage of AmountDueFromReinsurersNet100.0100.0100.0

pra:AssetsFairValueDisclosureIncludingNAVValueNotWithinFairValueHierarchy us-gaap:FairValueByMeasurementFrequency

pra:AssetsFairValueDisclosureIncludingNAVValueNotWithinFairValueHierarchy

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2020-12-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value3242323332493184321631773311344734283452350536783597356134403395
Percentage of AssetsFairValueDisclosureIncludingNAVValueNotWithinFairValueHierarchy100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:BusinessCombinationFairValuesAdjustmentsOnGrossReserve us-gaap:BusinessAcquisition

pra:BusinessCombinationFairValuesAdjustmentsOnGrossReserve

pra:NORCALGroup


Business
Period End2021-05-05
Value42
Percentage of BusinessCombinationFairValuesAdjustmentsOnGrossReserve100.0

pra:BusinessCombinationFairValuesAdjustmentsOnReinsuranceRecoverables us-gaap:BusinessAcquisition

pra:BusinessCombinationFairValuesAdjustmentsOnReinsuranceRecoverables

pra:NORCALGroup


Business
Period End2021-05-05
Value3500000.0
Percentage of BusinessCombinationFairValuesAdjustmentsOnReinsuranceRecoverables100.0

pra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedOperatingLeaseLiabilities us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedOperatingLeaseLiabilities

pra:NORCALGroup


Business
Period End2021-05-05
Value5275000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumedOperatingLeaseLiabilities100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBusinessOwnedLifeInsurance us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBusinessOwnedLifeInsurance

pra:NORCALGroup


Business
Period End2021-05-05
Value12
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBusinessOwnedLifeInsurance100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityInvestmentsAvailableForSale us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityInvestmentsAvailableForSale

pra:NORCALGroup


Business
Period End2021-05-05
Value374
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedEquityInvestmentsAvailableForSale100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFixedMaturitiesAvailableForSale us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFixedMaturitiesAvailableForSale

pra:NORCALGroup


Business
Period End2021-05-05
Value1100
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFixedMaturitiesAvailableForSale100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentInUnconsolidatedSubsidiaries us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentInUnconsolidatedSubsidiaries

pra:NORCALGroup


Business
Period End2021-05-05
Value26
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInvestmentInUnconsolidatedSubsidiaries100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets

pra:NORCALGroup


Business
Period End2021-05-05
Value4385000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOperatingLeaseRightOfUseAssets100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherInvestments us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherInvestments

pra:NORCALGroup


Business
Period End2021-05-05
Value32
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherInvestments100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilities us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilities

pra:NORCALGroup


Business
Period End2021-05-05
Value51
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherLiabilities100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPremiumReceivables us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPremiumReceivables

pra:NORCALGroup


Business
Period End2021-05-05
Value110
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPremiumReceivables100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPrepaidReinsurancePremiums us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPrepaidReinsurancePremiums

pra:NORCALGroup


Business
Period End2021-05-05
Value9238000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPrepaidReinsurancePremiums100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnPaidLossesAndLossAdjustmentExpenses us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnPaidLossesAndLossAdjustmentExpenses

pra:NORCALGroup


Business
Period End2021-05-05
Value266000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnPaidLossesAndLossAdjustmentExpenses100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnUnpaidLossesAndLossAdjustmentExpenses us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnUnpaidLossesAndLossAdjustmentExpenses

pra:NORCALGroup


Business
Period End2021-05-05
Value93
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReceivableFromReinsurersOnUnpaidLossesAndLossAdjustmentExpenses100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReinsurancePremiumsPayable us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReinsurancePremiumsPayable

pra:NORCALGroup


Business
Period End2021-05-05
Value12
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReinsurancePremiumsPayable100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReserveForLossesAndLossAdjustmentExpenses us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReserveForLossesAndLossAdjustmentExpenses

pra:NORCALGroup


Business
Period End2021-05-05
Value1182
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReserveForLossesAndLossAdjustmentExpenses100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermInvestments us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermInvestments

pra:NORCALGroup


Business
Period End2021-05-05
Value61
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedShortTermInvestments100.0

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnearnedPremiums us-gaap:BusinessAcquisition

pra:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnearnedPremiums

pra:NORCALGroup


Business
Period End2021-05-05
Value178
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedUnearnedPremiums100.0

pra:BusinessOwnedLifeInsuranceCost

pra:BusinessOwnedLifeInsuranceCost


Business
Period End2021-06-302021-03-312020-12-312020-09-30
Value43333333
Percentage of BusinessOwnedLifeInsuranceCost100.0100.0100.0100.0

pra:BusinessOwnedLifeInsuranceCost us-gaap:BusinessAcquisition

pra:NORCALGroup


Business
Period End2021-06-30
Value10.0
Percentage of BusinessOwnedLifeInsuranceCost23.3

pra:ConsolidatedNetAssetsHeldAtDomesticInsuranceSubsidiaries

pra:ConsolidatedNetAssetsHeldAtDomesticInsuranceSubsidiaries


Consolidated
Period End2020-12-31
Value1100
Percentage of ConsolidatedNetAssetsHeldAtDomesticInsuranceSubsidiaries100.0

pra:CreditLossesRecognizedInEarningsInWhichAPortionOfLossesAreRecognizedInComprehensiveIncomeLossCreditLossesOnDebtSecuritiesHeld

pra:CreditLossesRecognizedInEarningsInWhichAPortionOfLossesAreRecognizedInComprehensiveIncomeLossCreditLossesOnDebtSecuritiesHeld


Credit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value552000.0552000.01322000.01534000.0470000.0172000.0142000.0142000.093000.01313000.0
Percentage of CreditLossesRecognizedInEarningsInWhichAPortionOfLossesAreRecognizedInComprehensiveIncomeLossCreditLossesOnDebtSecuritiesHeld100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:DebtLongtermandShorttermCombinedAmountGross us-gaap:LongtermDebtType

pra:DebtLongtermandShorttermCombinedAmountGross

us-gaap:Mortgages


Debt
Period End2020-12-312019-12-312018-12-312017-12-31
Value36373940
Percentage of DebtLongtermandShorttermCombinedAmountGross100.0100.0100.0100.0

pra:DeferredTaxAssetsBasisDifferencesInvestments

pra:DeferredTaxAssetsBasisDifferencesInvestments


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value2595000.00912000.00
Percentage of DeferredTaxAssetsBasisDifferencesInvestments100.00.0100.00.0

pra:DeferredTaxAssetsOperatingLeaseLiability

pra:DeferredTaxAssetsOperatingLeaseLiability


Deferred
Period End2020-12-312019-12-312018-12-31
Value4224000.04631000.00
Percentage of DeferredTaxAssetsOperatingLeaseLiability100.0100.00.0

pra:DeferredTaxAssetsUnpaidLossDiscount

pra:DeferredTaxAssetsUnpaidLossDiscount


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3634302039444451578166
Percentage of DeferredTaxAssetsUnpaidLossDiscount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:DeferredTaxLiabilitiesForeignRateDifferential

pra:DeferredTaxLiabilitiesForeignRateDifferential


Deferred
Period End2020-12-31
Value790000.0
Percentage of DeferredTaxLiabilitiesForeignRateDifferential100.0

pra:DeferredTaxLiabilitiesRightOfUseAssets

pra:DeferredTaxLiabilitiesRightOfUseAssets


Deferred
Period End2020-12-312019-12-312018-12-31
Value4015000.04439000.00
Percentage of DeferredTaxLiabilitiesRightOfUseAssets100.0100.00.0

pra:DeferredTaxLiabilitiesUnpaidLossDiscount

pra:DeferredTaxLiabilitiesUnpaidLossDiscount


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.2977.557100.0
Percentage of DeferredTaxLiabilitiesUnpaidLossDiscount100.0100.0100.00.0

pra:DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleAndTradingSecurities

pra:DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleAndTradingSecurities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value199.7530.05.1669.797133132787044
Percentage of DeferredTaxLiabilitiesUnrealizedGainsOnAvailableForSaleAndTradingSecurities100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:EarnedButUnbilledPremiums

pra:EarnedButUnbilledPremiums


Earned
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3000000.04300000.04300000.04300000.04300000.03900000.03400000.0
Percentage of EarnedButUnbilledPremiums100.0100.0100.0100.0100.0100.0100.0

pra:IncomeTaxRefundCARESAct

pra:IncomeTaxRefundCARESAct


Income
Period End2020-09-30
Value9.1
Percentage of IncomeTaxRefundCARESAct100.0

pra:InvestmentInUnconsolidatedSubsidiaries

pra:InvestmentInUnconsolidatedSubsidiaries


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-03-312016-03-312015-03-312014-03-31
Value3142993103123063713583663853903673903904013305.61320158.995
Percentage of InvestmentInUnconsolidatedSubsidiaries100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:InvestmentInUnconsolidatedSubsidiaries us-gaap:ConsolidatedEntities

srt:ParentCompany


Investment
Period End2020-12-312019-12-312018-12-31
Value0.9150.9150.875
Percentage of InvestmentInUnconsolidatedSubsidiaries0.30.30.2

pra:InvestmentInUnconsolidatedSubsidiaries us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:OtherLimitedPartnershipsandLimitedLiabilityCompany


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value295275282280269327310313326326298316310314239
Percentage of InvestmentInUnconsolidatedSubsidiaries93.891.991.189.787.988.286.585.484.683.481.180.979.578.572.6

pra:OtherLimitedPartnershipsandLimitedLiabilityCompanyGreaterThan25PercentOwnership


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value484746483941413737342524283130
Percentage of InvestmentInUnconsolidatedSubsidiaries15.315.714.915.412.911.011.410.39.78.77.06.27.37.89.3

pra:OtherLimitedPartnershipsandLimitedLiabilityCompanyLessthan25PercentOwnership


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value247228236232230286269275288292272292281283209
Percentage of InvestmentInUnconsolidatedSubsidiaries78.576.276.274.375.077.175.175.074.974.774.174.772.270.763.3

pra:QualifiedAffordableHousingTaxCreditPartnerships


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value192427323742465056616570748084
Percentage of InvestmentInUnconsolidatedSubsidiaries6.28.18.910.312.111.312.913.914.515.717.918.019.220.125.6

pra:TaxCreditPartnershipsAlmost100Ownership


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value6.58.19.4111315171921232526283032
Percentage of InvestmentInUnconsolidatedSubsidiaries2.12.73.03.64.34.14.85.25.55.96.86.87.37.79.8

pra:TaxCreditPartnershipsLessThan20Ownership


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value131618202326293135384043464952
Percentage of InvestmentInUnconsolidatedSubsidiaries4.25.45.96.77.87.28.18.79.19.811.111.111.912.415.8

pra:InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage us-gaap:Range, us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage

srt:Maximum, pra:TaxCreditPartnershipsAlmost100Ownership


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value100.0100.0100.0100.01.01.01.01.01.01.01.01.0
Percentage of InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Maximum, pra:TaxCreditPartnershipsLessThan20Ownership


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value20.020.020.020.00.20.20.20.20.20.20.20.2
Percentage of InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage20.020.020.020.020.020.020.020.020.020.020.020.0

pra:InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pra:OtherLimitedPartnershipsandLimitedLiabilityCompanyGreaterThan25PercentOwnership


Investment
Period End2020-12-312019-12-31
Value25.00.25
Percentage of InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage25.025.0

pra:OtherLimitedPartnershipsandLimitedLiabilityCompanyLessthan25PercentOwnership


Investment
Period End2020-12-312019-12-31
Value25.00.25
Percentage of InvestmentInUnconsolidatedSubsidiariesOwnershipPercentage25.025.0

pra:InvestmentsInSubsidiaries us-gaap:ConsolidatedEntities

pra:InvestmentsInSubsidiaries

srt:ParentCompany


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value1383153415991713
Percentage of InvestmentsInSubsidiaries100.0100.0100.0100.0

pra:InvestmentsWithExposureToLIBOR

pra:InvestmentsWithExposureToLIBOR


Investments
Period End2020-12-312020-09-30
Value191188
Percentage of InvestmentsWithExposureToLIBOR100.0100.0

pra:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour

pra:LesseeOperatingLeaseLiabilityToBePaidAfterYearFour


Lessee
Period End2021-06-302021-03-312020-09-30
Value8.8758.87510
Percentage of LesseeOperatingLeaseLiabilityToBePaidAfterYearFour100.0100.0100.0

pra:MajorReinsurerIndividualBalanceAmount us-gaap:Range

pra:MajorReinsurerIndividualBalanceAmount

srt:Minimum


Major
Period End2020-12-31
Value51
Percentage of MajorReinsurerIndividualBalanceAmount100.0

pra:NumberOfDebtSecuritiesInUnrealizedLossPositionAsPercentageOfDebtSecurities us-gaap:FinancialInstrument

pra:NumberOfDebtSecuritiesInUnrealizedLossPositionAsPercentageOfDebtSecurities

pra:NonGovernmentBacked


Number
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value23.628.511.119.20.1620.3940.1210.1340.1550.3180.5060.5220.265
Percentage of NumberOfDebtSecuritiesInUnrealizedLossPositionAsPercentageOfDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:OtherInvestmentsFairValueDisclosure

pra:OtherInvestmentsFairValueDisclosure


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value10669443737303634333331323333525131
Percentage of OtherInvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:OtherInvestmentsMeasurementInput us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

pra:OtherInvestmentsMeasurementInput

srt:Maximum, us-gaap:FairValueInputsLevel3, us-gaap:OtherInvestments, us-gaap:MeasurementInputComparabilityAdjustment, us-gaap:IncomeApproachValuationTechnique


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value10.00.10.10.10.10.10.10.10.1
Percentage of OtherInvestmentsMeasurementInput100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:WeightedAverage, us-gaap:FairValueInputsLevel3, us-gaap:OtherInvestments, us-gaap:MeasurementInputComparabilityAdjustment, us-gaap:IncomeApproachValuationTechnique


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value5.00.050.050.050.050.050.050.050.05
Percentage of OtherInvestmentsMeasurementInput50.050.050.050.050.050.050.050.050.0

pra:OtherLiabilitiesMeasurementInput us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:ValuationTechnique

pra:OtherLiabilitiesMeasurementInput

srt:Maximum, us-gaap:FairValueInputsLevel3, pra:ValuationTechniqueMonteCarloSimulationAndDiscountedCashFlows


Other
Period End2021-06-30
Value10.0
Percentage of OtherLiabilitiesMeasurementInput100.0

srt:Minimum, us-gaap:FairValueInputsLevel3, pra:ValuationTechniqueMonteCarloSimulationAndDiscountedCashFlows


Other
Period End2021-06-30
Value0
Percentage of OtherLiabilitiesMeasurementInput0.0

srt:WeightedAverage, us-gaap:FairValueInputsLevel3, pra:ValuationTechniqueMonteCarloSimulationAndDiscountedCashFlows


Other
Period End2021-06-30
Value8.0
Percentage of OtherLiabilitiesMeasurementInput80.0

pra:OtherLiabilitiesNotDetailed

pra:OtherLiabilitiesNotDetailed


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value14113211012111597100119135102102108103144123113112116122137137100116125126125137124
Percentage of OtherLiabilitiesNotDetailed100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:OtherShareholdersEquityIncludingUnrealizedGainsOrLossesOnSecuritiesOfSubsidiaries us-gaap:ConsolidatedEntities

pra:OtherShareholdersEquityIncludingUnrealizedGainsOrLossesOnSecuritiesOfSubsidiaries

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value1348151115221594
Percentage of OtherShareholdersEquityIncludingUnrealizedGainsOrLossesOnSecuritiesOfSubsidiaries100.0100.0100.0100.0

pra:PercentOfInvestmentsWithExposureToLIBOR

pra:PercentOfInvestmentsWithExposureToLIBOR


Percent
Period End2020-09-30
Value6.0
Percentage of PercentOfInvestmentsWithExposureToLIBOR100.0

pra:PolicyLiabilities

pra:PolicyLiabilities


Policy
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value4165284428182868282428262812273326922671259025982551253024842497242724282395243624122422239724472421244424212569256626122363246724952540233424972513259925802781275527942781
Percentage of PolicyLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationThereafter us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition

pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationThereafter

pra:DDRReserveAndPermatailProducts, pra:NORCALGroup


Present
Period End2021-05-05
Value2375000.0
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationThereafter100.0

pra:FairValueAdjustmentOnReservesNet, pra:NORCALGroup


Present
Period End2021-05-05
Value4058000.0
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationThereafter170.9

pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationThereafter us-gaap:BusinessAcquisition

pra:NORCALGroup


Present
Period End2021-05-05
Value6433000.0
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationThereafter270.9

pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal us-gaap:BalanceSheetLocation

pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal

pra:FairValueAdjustmentOnReservesNet


Present
Period End2021-05-05
Value38
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal100.0

pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal us-gaap:BalanceSheetLocation, us-gaap:BusinessAcquisition

pra:DDRReserveAndPermatailProducts, pra:NORCALGroup


Present
Period End2021-05-05
Value3.5
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal9.0

pra:FairValueAdjustmentOnReservesNet, pra:NORCALGroup


Present
Period End2021-05-05
Value38
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal100.0

pra:UnearnedPremium, pra:NORCALGroup


Present
Period End2021-05-05
Value11
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal30.2

pra:PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal us-gaap:BusinessAcquisition

pra:NORCALGroup


Present
Period End2021-05-05
Value53
Percentage of PresentValueOfFutureInsuranceProfitsExpectedAmortizationTotal139.1

pra:ProportionOfCapitalProvidedToSupportSegment us-gaap:StatementBusinessSegments

pra:ProportionOfCapitalProvidedToSupportSegment

pra:Syndicate1729


Proportion
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-01-012018-12-312018-01-012017-12-31
Value5.05.029.029.00.290.290.610.610.620.620.58
Percentage of ProportionOfCapitalProvidedToSupportSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:Syndicate6131


Proportion
Period End2021-06-302021-03-312020-12-312020-09-302018-01-01
Value50.050.0100.0100.01.0
Percentage of ProportionOfCapitalProvidedToSupportSegment1000.01000.0344.8344.8161.3

pra:SecondGreatestUnrealizedLossPosition us-gaap:FinancialInstrument

pra:SecondGreatestUnrealizedLossPosition

pra:NonGovernmentBacked


Second
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value200000.0500000.0200000.0500000.0600000.01300000.0100000.0200000.0200000.0200000.0500000.0400000.0300000.0
Percentage of SecondGreatestUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:SegregatedPortfolioCellDividendsPayable

pra:SegregatedPortfolioCellDividendsPayable


Segregated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6469686460555556515953544847464640373433252316161818150.0
Percentage of SegregatedPortfolioCellDividendsPayable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

pra:ShortdurationInsuranceContractsLiabilityforUnpaidClaimsandClaimsAdjustmentExpenseLossPortfolioTransfer

pra:ShortdurationInsuranceContractsLiabilityforUnpaidClaimsandClaimsAdjustmentExpenseLossPortfolioTransfer


Shortduration
Period End2020-12-31
Value7883000.0
Percentage of ShortdurationInsuranceContractsLiabilityforUnpaidClaimsandClaimsAdjustmentExpenseLossPortfolioTransfer100.0

pra:SingleGreatestUnrealizedLossPosition us-gaap:FinancialInstrument

pra:SingleGreatestUnrealizedLossPosition

pra:NonGovernmentBacked


Single
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value300000.0500000.0400000.0700000.0700000.02000000.0200000.0200000.0200000.0200000.0600000.0500000.0400000.0
Percentage of SingleGreatestUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pra:StockRepurchaseOrDebtRepaymentRemainingAuthorizedAmount

pra:StockRepurchaseOrDebtRepaymentRemainingAuthorizedAmount


Stock
Period End2021-06-302021-03-312020-12-312020-09-30
Value110110109110
Percentage of StockRepurchaseOrDebtRepaymentRemainingAuthorizedAmount100.0100.0100.0100.0

us-gaap:AlternativeInvestment

us-gaap:AlternativeInvestment


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value249226246257246303293296312312288307230
Percentage of AlternativeInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AlternativeInvestment us-gaap:FinancialInstrument

pra:InvestmentsInUnconsolidatedSubsidiaries


Alternative
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
Value249226233233223280270274291291268210
Percentage of AlternativeInvestment100.0100.094.990.690.492.492.392.693.293.493.091.3

us-gaap:AlternativeInvestment us-gaap:FinancialInstrument, us-gaap:InvestmentType

pra:InvestmentsInUnconsolidatedSubsidiaries, pra:LongshortEquityFunds


Alternative
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
Value0.5350.6320.5960.6080.51629302929282831
Percentage of AlternativeInvestment0.20.30.20.20.29.610.410.19.39.310.013.6

pra:InvestmentsInUnconsolidatedSubsidiaries, pra:MultiStrategyFundofFunds


Alternative
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value2.0921.9951.9931.9519.7399.5969.4689.3229.1
Percentage of AlternativeInvestment0.80.80.70.73.33.13.03.23.9

pra:InvestmentsInUnconsolidatedSubsidiaries, pra:PrivateDebtFunds


Alternative
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
Value161616181819191414161842
Percentage of AlternativeInvestment6.77.26.77.07.36.36.54.94.55.36.318.3

pra:InvestmentsInUnconsolidatedSubsidiaries, pra:StrategyFocusedFund


Alternative
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
Value43454338373636345452480.606
Percentage of AlternativeInvestment17.320.017.715.115.212.212.411.717.416.916.80.3

pra:InvestmentsInUnconsolidatedSubsidiaries, pra:StructuredCreditFund


Alternative
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
Value49263439414242414038296.561
Percentage of AlternativeInvestment19.711.914.215.416.714.114.514.113.112.410.12.8

pra:InvestmentsInUnconsolidatedSubsidiaries, us-gaap:PrivateEquityFunds


Alternative
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
Value140137138133123131120124122124114100
Percentage of AlternativeInvestment56.160.756.252.050.143.241.142.139.239.739.843.3

us-gaap:EquitySecurities, pra:MortgageFund


Alternative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1224232222212120200.0
Percentage of AlternativeInvestment5.19.49.67.67.77.46.86.67.00.0

us-gaap:AociTaxAttributableToParent

us-gaap:AociTaxAttributableToParent


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value1411191715-1.1629.795108.6272.449-4.355-5.224-4.027-1.8425.2181314119.894303225121931
Percentage of AociTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetsFairValueDisclosure us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:AssetsFairValueDisclosure

pra:InvestmentsInUnconsolidatedSubsidiaries, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value249226233233223280270
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecurities, us-gaap:FairValueMeasuredAtNetAssetValuePerShare, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Assets
Period End2020-12-312020-09-302020-06-302020-03-312019-12-31
Value1224232222
Percentage of AssetsFairValueDisclosure5.410.410.78.28.3

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value534336416457538406545617643635690676678762877703665672799600531463400464441453451405476441502358336395262256289247214158191
Percentage of AssetsFairValueDisclosure214.0148.4178.3196.4241.6144.8201.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel12And3, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value4474303729952959289727772940
Percentage of AssetsFairValueDisclosure1791.91338.51281.81269.61299.1989.11087.1

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value39112681256724852347235923842411234322922197221521832218231924832564261026572785282427792816285229943051314532483273325730893198352036143433363036023655365836693590
Percentage of AssetsFairValueDisclosure1566.71181.71098.41065.91052.7840.2881.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value27191116101111107.0918.4318.175161732191820221717201915141416515613412812010065657160664356545856
Percentage of AssetsFairValueDisclosure11.28.55.17.34.84.24.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value47233263299532173144308129403039299329372896290828803014321632063251330534743402337532623232333134503670375237893879381936923622392340813756395339353958392838863838
Percentage of AssetsFairValueDisclosure1891.91438.51281.81380.01409.81097.31087.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AssetsHeldByInsuranceRegulators

us-gaap:AssetsHeldByInsuranceRegulators


Assets
Period End2021-06-302021-03-312020-12-312020-09-30
Value54414242
Percentage of AssetsHeldByInsuranceRegulators100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value776899969245505444219.6798.67932
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivables


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4.333.2274.0064.0483.471.131.9582.3512.2920.8170.2540.0230.047
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax5.64.74.04.23.82.53.94.35.13.82.60.30.1

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value3.9813.2544.7884.0553.4451.4461.4682.0611.3810.50.0380.0350.091
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax5.14.74.84.23.73.22.93.83.12.40.40.40.3

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value474263585420333326103.3283.75215
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax61.362.063.260.359.744.065.461.358.650.334.443.246.6

us-gaap:GovernmentNationalMortgageAssociationCertificatesAndObligationsGNMA


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0.530.5370.6870.7110.7420.4640.1820.2740.2240.0910.0120.00.023
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.70.80.70.70.81.00.40.50.50.40.10.00.1

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value5.675.7277.1717.5187.7747.1743.1392.982.141.2160.8140.7932.438
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax7.38.37.27.88.415.76.25.54.85.78.49.17.5

us-gaap:USGovernmentSponsoredEnterprisesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0.0870.1060.1580.1680.1870.2050.1250.1470.1410.070.0250.0120.073
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.10.20.20.20.20.40.20.30.30.30.30.10.2

us-gaap:USStatesAndPoliticalSubdivisions


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value13111617169.7959.1111107.1744.8773.914
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax17.216.316.918.318.121.418.020.423.833.850.444.943.7

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2.1372.0882.9854.2154.8375.421.5332.0951.6550.6790.3310.1640.485
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.83.03.04.45.311.83.03.93.73.23.41.91.5

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value9.287153.4289.01413503.0843.8193.7371032369.556
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivables


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0.3680.350.7421.2952.4589.1320.1530.0460.0880.5021.181.8570.466
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.02.321.614.418.617.95.01.22.44.83.65.14.9

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value0.4521.080.941.3931.542.7920.2210.1030.0340.2250.3750.5060.134
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax4.97.227.415.511.65.57.22.70.92.11.11.41.4

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value4.7189.1721.3025.7658.525331.5752.9142.3226.62124215.707
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax50.860.938.064.064.465.351.176.362.162.874.758.659.7

us-gaap:GovernmentNationalMortgageAssociationCertificatesAndObligationsGNMA