ERIE


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

Table of contents


us-gaap:StatementClassOfStock
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:StatementClassOfStock
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:StatementClassOfStock
us-gaap:EarningsPerShareBasic
us-gaap:StatementClassOfStock
us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementClassOfStock
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetInvestmentIncome

us-gaap:NonoperatingIncomeExpense

us-gaap:OperatingExpenses
us-gaap:ProductOrService

us-gaap:OperatingIncomeLoss

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService

us-gaap:Revenues

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AssetsCurrent

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType
us-gaap:PropertyPlantAndEquipmentGross

us-gaap:DeferredTaxAssetsLiabilitiesNet
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:PropertyPlantAndEquipmentByType, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:OtherAssetsNoncurrent

us-gaap:EquitySecuritiesFvNi

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:DividendsPayableCurrent

us-gaap:LiabilitiesCurrent

us-gaap:LongTermDebtCurrent
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiabilityCurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:LongTermDebt
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtNoncurrent

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiabilityNoncurrent
us-gaap:BalanceSheetLocation
us-gaap:OperatingLeaseLiability

us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:UnrecognizedTaxBenefits

erie:AdministrativeServicesExpensesPaid

erie:AdministrativeServicesReimbursementsReceived

erie:AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLoss

erie:AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLossRecoveryNet

erie:AvailableForSaleDebtSecuritiesImpairmentLoss

erie:AvailableForSaleDebtSecuritiesImpairmentLossRecovery

erie:DebtSecuritiesAvailableforsaleSellbeforeRecovery
us-gaap:StatementEquityComponents
erie:DeferredCompensationUnderRabbiTrustPlans
us-gaap:RelatedPartyTransactionsByRelatedParty
erie:DefinedBenefitPlanPostretirementBenefitExpensesReimbursementPercentage
us-gaap:StatementEquityComponents
erie:DistributionsFromRabbiTrustPlans
us-gaap:StatementClassOfStock
erie:IncrementalCommonSharesAttributableToConversionOfConvertibleCommonStock

erie:InterestAndDividendIncomeOperatingAndEquityMethodInvestmentDividendsOrDistributions

erie:NetInvestmentIncomeAndIncomeLossFromEquityMethodInvestments

erie:NetTreasuryStockValueAcquiredHeldAndReissued
us-gaap:StatementEquityComponents
us-gaap:RelatedPartyTransactionsByRelatedParty
erie:OperatingLeaseCostAmountReimbursed

erie:OtherExpense

erie:OtherIncomeExpense

erie:PaymentsForAgentBonuses

erie:PaymentsforOtherLaborRelatedExpenses

erie:ProceedsFromInsuranceAgencyManagementFeesReceived

erie:ProceedsFromInterestAndDividendsReceivedAndEquityMethodInvestmentDividendsOrDistributions

erie:ProceedsFromSaleOfEquitySecurities

erie:RevenueRecognitionManagementFeeReturnedPremiumCancellationAllowance

erie:TransferBetweenInvestmentCategories

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal

us-gaap:DebtSecuritiesAvailableForSaleGainLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain
us-gaap:FinancialInstrument
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss
us-gaap:FinancialInstrument
us-gaap:DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanServiceCost
us-gaap:StatementClassOfStock
us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther
us-gaap:StatementClassOfStock
us-gaap:DividendsCommonStockCash
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquitySecuritiesFvNiGainLoss
us-gaap:FinancialInstrument

us-gaap:EquitySecuritiesFvNiRealizedGainLoss
us-gaap:FinancialInstrument

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss
us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization
us-gaap:FinancialInstrument
us-gaap:GainLossOnSaleOfOtherInvestments

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:StatementClassOfStock
us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestAndDividendIncomeOperating
us-gaap:InvestmentType

us-gaap:InvestmentIncomeInvestmentExpense
us-gaap:StatementClassOfStock
us-gaap:NetIncomeLossAttributableToParentDiluted

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1

us-gaap:OperatingLeaseCost
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:PaymentsForCommissions

us-gaap:PaymentsForOtherOperatingActivities

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireLimitedPartnershipInterests

us-gaap:PaymentsToAcquireLoansReceivable

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToEmployees

us-gaap:ProceedsFromCollectionOfLoansReceivable

us-gaap:ProceedsFromFeesReceived

us-gaap:ProceedsFromInterestAndDividendsReceived

us-gaap:ProceedsFromLimitedPartnershipInvestments

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromRepaymentsOfDebt

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

erie:AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent

erie:AccumulatedDepreciationDepletionandAmortizationPropertyPlantandEquipmentandFiniteLivedIntangibleAssets

erie:AgentBonusesPayableCurrent
dei:LegalEntity, us-gaap:FinancialInstrument
erie:AmountOfLoanParticipationProgram

erie:CommonStockIssuedDirectorStockTrust
us-gaap:PlanName
erie:DeferredCompensationEquityRabbiTrust

erie:DeferredTaxAssetsNetAllowanceforPremiumCancellations

erie:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits

erie:DeferredTaxLiabilitiesAdvanceCommissions

erie:DeferredTaxLiabilitiesUnrealizedGainsOnInvestmentsIncludingEquityMethodInvestments
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
erie:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPostRetirementDiscountRate
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
erie:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPreRetirementDiscountRate
us-gaap:Range, us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
erie:DefinedBenefitPlanTargetNormalCostThreshold

erie:EquitySecuritiesFVNINoncurrent
us-gaap:EquitySecuritiesByIndustry, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
erie:EquitySecuritiesFVNITotal
us-gaap:EquitySecuritiesByIndustry, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

erie:FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentGross

erie:FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentNet
erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType
erie:FiniteLivedIntangibleAssetsNotYetSubjectToAmortization
us-gaap:LongtermDebtType
erie:LongTermDebtMaturityAfterYearFour

us-gaap:AccountsReceivableRelatedPartiesCurrent

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedSalesCommissionCurrent
us-gaap:StatementEquityComponents
us-gaap:AociBeforeTaxAttributableToParent
us-gaap:StatementEquityComponents
us-gaap:AociTaxAttributableToParent

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent
us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCollateralAmount

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss
us-gaap:ExternalCreditRatingByGrouping
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger
us-gaap:FinancialInstrument
us-gaap:ExternalCreditRatingByGrouping
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:ExternalCreditRatingByGrouping
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months
us-gaap:FinancialInstrument
us-gaap:ExternalCreditRatingByGrouping
us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
us-gaap:FinancialInstrument
us-gaap:ExternalCreditRatingByGrouping
us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition
us-gaap:FinancialInstrument
us-gaap:ExternalCreditRatingByGrouping
us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
us-gaap:FinancialInstrument

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredCompensationLiabilityCurrent

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther

us-gaap:DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DefinedBenefitPensionPlanLiabilitiesCurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation
us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations
us-gaap:PlanName
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

us-gaap:EquityMethodInvestments

us-gaap:EquitySecuritiesFVNINoncurrent
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:ValuationTechnique
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FinancingReceivableAllowanceForCreditLosses
erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType
us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FinancialInstrument
us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:IncomeTaxesReceivable
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:LongtermDebtType
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

us-gaap:NotesAndLoansReceivableNetNoncurrent
us-gaap:FinancialInstrument
us-gaap:NotesReceivableGross
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:NotesReceivableNet
us-gaap:FairValueByMeasurementBasis
us-gaap:CreditFacility
us-gaap:SecurityOwnedAndPledgedAsCollateralFairValue
erie:IncentivePlanByPerformancePeriod, us-gaap:PlanName, us-gaap:StatementClassOfStock
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
us-gaap:PlanName, us-gaap:StatementClassOfStock

us-gaap:StockholdersEquityBeforeTreasuryStock

us-gaap:TreasuryStockCommonValue

Plots across concepts


IncomeStatement
Net Income Loss
Expenses
Interest Expense
Balance Sheet
Long Term Debt Noncurrent
Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
Current Assets
Prepaid Expense And Other Assets Current
NonCurrent Assets
Deferred Income Tax Assets Net
Liabilities
Liabilities Current
Current Liabilities
Long Term Debt Current
Noncurrent Liabilities
Other Liabilities Noncurrent
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NonoperatingIncomeExpense
Interest Expense
BanksAndOrInsurance
Interest And Dividend Income Operating

Tables

  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
 us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassA▃▁█52.31042952.30298152.32435NA52.32512552.314752.312036NA52.31743852.31284952.310628NA52.31687652.29939552.40856NA52.41130352.39286252.523927NA52.60208352.56251452.634752
 us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock us-gaap:CommonClassB▄▄▄0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542
 us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementClassOfStock us-gaap:CommonClassA█▁▇46.1890346.18780846.188789NA46.18900646.18899446.188337NA46.18894146.18870546.187908NA46.18894946.18085246.188522NA46.1889846.18886746.189068NA46.18906846.18906846.189068
 us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementClassOfStock us-gaap:CommonClassB▄▄▄0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542NA0.0025420.0025420.002542
 us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock us-gaap:CommonClassA▇▇▄▄█▇▆▅▇▆▅▁▄▄▃▃▄▄▃▁▃▄▂1.921.761.271.282.021.881.621.341.731.711.410.691.261.261.030.981.231.320.990.651.061.210.83
 us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock us-gaap:CommonClassB▇▇▄▄█▇▆▅▇▆▅▁▄▄▃▃▄▄▃▁▃▄▂287.0264.0191.0192.0303.0283.0243.0201.0259.0257.0212.0103.0189.0189.0154.0147.0185.0197.0148.097.0160.0181.0125.0
 us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassA▇▇▄▄█▇▆▅▇▆▅▁▄▄▃▃▄▄▃▁▃▄▂1.711.571.131.141.81.681.441.191.541.521.260.611.121.120.910.871.091.170.870.570.941.070.74
 us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassB▇▇▄▄█▇▆▅▇▆▅▁▄▄▃▃▄▄▃▁▃▄▂287.0264.0191.0192.0303.0283.0243.0201.0259.0257.0212.0103.0189.0188.0154.0147.0185.0197.0148.097.0159.0180.0125.0
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▆█▂▄▆▆▅▆▅▅▄▁▄▄▃▁▄▄▃▄▃▄▃98.018122.08829.7558.92297.7391.56482.02194.55979.95479.15560.33121.31258.37659.61949.39714.42357.73164.33549.3653.51549.054.039.0
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▃▃▂▂▃▃▃▂▃▃▂▂▂▂▂▂▂▂▂▁▁█▅111.696102.48276.12775.65119.502106.03895.51582.642104.471100.98683.22164.64188.86589.23572.95470.12386.58193.16370.22446.08340.0295.0197.0
us-gaap:IncomeTaxExpenseBenefit ▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▁▄█▆22.4820.50516.80116.06325.33318.28420.20420.32824.02521.2817.46332.58830.32230.70825.07824.33729.20531.85424.329-74.4297.098.061.0
us-gaap:IncomeTaxesPaid 46.951NANANA21.0NANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxesPaidNet NA26.0-0.37511.95421.040.001-0.13829.60629.0-0.0680.27635.74622.73748.001-0.23435.2527.09942.00.258-239.65398.0176.072.0
us-gaap:InterestExpense ▁▁▁▁▂▄▅▇█▇▆▅▅▄▃▂0.0030.0020.0030.0240.1110.2720.4490.5960.7090.6020.5530.4380.3770.2570.1660.101NANANANANANANA
us-gaap:InterestPaidNet ▁▁▁▁▂▄▅▆█▆▆▄▅▃▃0.001-0.010.0140.00.1340.2710.4480.5570.7550.5150.550.3330.380.1610.164NANANANANANANANA
us-gaap:NetIncomeLoss ▇▇▄▄█▇▆▅▆▆▅▁▄▄▃▃▄▄▃▁▃▄▂89.21681.97759.32659.58794.16987.75475.31162.31480.44679.70665.75832.05358.54358.52747.87645.78657.37661.30945.89530.13350.056.039.0
 us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementClassOfStock us-gaap:CommonClassA▇▇▄▄█▇▆▅▆▆▅▁▄▄▃▃▄▄▃▁▃▄▂88.48681.30658.8459.09993.39887.03674.69461.80479.78779.05365.2231.7958.06458.04847.48445.41156.90660.80745.5229.88749.15655.6938.515
 us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementClassOfStock us-gaap:CommonClassB▇▇▄▄█▇▆▅▇▆▅▁▄▄▃▃▄▄▃▁▃▄▂0.730.6710.4860.4880.7710.7180.6170.510.6590.6530.5380.2630.4790.4790.3920.3750.470.5020.3750.2460.4060.460.318
 us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock us-gaap:CommonClassBNA0.6710.486NANANANANANANANANANANANANANANANANANANANA
us-gaap:NetInvestmentIncome ▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▁███7.037.3738.3698.28.6528.038.5178.6267.6597.1046.826.4245.976.2365.9785.6635.3314.8914.662-342.209120.0127.0113.0
us-gaap:NonoperatingIncomeExpense █▇▁16.43811.553-9.195NA13.6069.6529.795NANANANANANANANANANANANANANANANA
us-gaap:OperatingExpenses ██▇▇▇█▆▆▇▇▆▂▃▃▂▂▂▂▁▁▂▂▁557.256565.83531.046528.04532.835551.1507.984501.71515.431526.135494.593343.444361.656365.52332.782322.928336.151338.125307.063314.541328.348331.677298.401
us-gaap:OperatingIncomeLoss ▇▆▆▄█▇▆▅▇▇▅▃▅▆▄▃▅▆▄▁▄▄▂96.22591.18985.69168.7105.90796.6186.12274.75896.69595.32377.56757.95880.83683.04466.53456.68582.25585.75967.66541.83968.28969.98352.43
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▃▃▂▂▃▃▂▂▂▂▂▁▁▂▁▁▁▁▁▁▆██653.481657.019616.737596.74638.742647.71594.106576.468612.126621.458572.16401.402442.492448.564399.316379.613418.406423.884374.728356.381346.01632.01605.0
us-gaap:Revenues ▃▃▂▂▃▃▂▂▂▂▂▁▁▂▁▁▁▁▁▁▆██653.481657.019616.737596.74638.742647.71594.106576.468612.126621.458572.16401.402442.492448.564399.316379.613418.406423.884374.728356.381346.01632.01605.0
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:Assets ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁███2159.3422082.8611957.4932016.241974.581889.6471799.4561778.3271759.5031652.2751573.4761665.8591631.4291567.2251490.0361548.9551485.0151414.8261340.6241407.29618115.018069.017993.0
us-gaap:Liabilities ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁███912.125888.722840.501882.987855.309826.193785.652804.655838.48772.087733.321808.515756.279714.011660.178732.045646.086599.632555.757637.7939990.09907.09856.0
us-gaap:LiabilitiesAndStockholdersEquity ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁███2159.3422082.8611957.4932016.241974.581889.6471799.4561778.3271759.5031652.2751573.4761665.8591631.4291567.2251490.0361548.9551485.0151414.8261340.6241407.29618115.018069.017993.0
us-gaap:StockholdersEquity █▇▆▇▆▆▅▄▄▃▃▃▃▃▃▂▃▂▂▂▂▁▁1247.2171194.1391116.9921133.2531119.2711063.4541013.804973.672921.023880.188840.155857.344875.15853.214829.858816.91838.929815.194784.867769.503750.0732.0710.0
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:AssetsCurrent ▄▄▄▅▅▅▆█▅▄▃▄▃▂▂▂▂▁▁▂792.922859.238810.074891.404934.895937.247962.3911168.946888.857828.065720.746801.882720.678671.085625.718665.516627.75597.668557.969635.146NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▄▅▄███▇▆▅▃▁▄216.355257.738228.646336.739344.872338.262312.045266.417244.688198.412119.627215.721NANANA189.072NANANANANANANA
us-gaap:AccountsReceivableNetCurrent ▇█▄▁501.192506.69482.238468.636NANANANANANANANANANANANANANANANANANANA
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▆██▅▅▄▆▃▅▅▅▃▃▃▄▂▂▃▃▁52.00860.66858.71544.94347.71242.349.99736.89244.01445.42643.06134.8935.79736.02339.06530.16929.59333.88537.16424.697NANANA
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
 us-gaap:PropertyPlantAndEquipmentGross erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType us-gaap:EquipmentNANANA14.546NANANANANANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType us-gaap:FurnitureAndFixturesNANANA1.934NANANA0.0NANANANANANANANANANANANANANANA
 us-gaap:PropertyPlantAndEquipmentGross erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType us-gaap:LandBuildingsAndImprovementsNANANA5.068NANANA0.0NANANA7.627NANANA7.627NANANA7.627NANANA
 us-gaap:PropertyPlantAndEquipmentGross erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType us-gaap:LeaseholdImprovementsNANANA1.313NANANA0.617NANANA1.375NANANA1.375NANANA1.171NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANANA17.18615.50519.0922.1824.10137.6631.52729.05519.3947.55851.81152.49553.88936.16135.7835.2540.68651.044.040.0
 us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BalanceSheetLocation us-gaap:OtherNoncurrentAssets▁▄▅█16.84419.26720.38122.401NANANA0.0NANANANANANANANANANANANANANANA
 us-gaap:OperatingLeaseRightOfUseAsset us-gaap:PropertyPlantAndEquipmentByType,us-gaap:RelatedPartyTransactionsByRelatedParty erie:OfficeSpace,erie:ErieInsuranceExchange▁▂▃▄▆▇█7.89.210.711.713.314.716.2NANANANANANANANANANANANANANANANA
us-gaap:OtherAssetsNoncurrent ▂▂▂██▇█▅▅▄▃▂▂▁▁▁▁▁▁▁32.48932.70232.62496.85395.13889.56892.8661.5962.53947.83445.328.79329.42422.35521.22420.09619.57718.89219.64720.968NANANA
us-gaap:EquitySecuritiesFvNi ▁▅▁█0.01.4160.02.381NA12.44512.4111.85312.51112.488NANANANANANANANANANANANANA
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent █▇▆▇▆▆▅▄▄▃▃▄▃▂▁▂▃▂▁▂148.075137.745130.035134.957131.453124.794123.179111.291113.20497.13995.789104.53399.33186.84481.55188.15394.50490.85679.33388.532NANANA
us-gaap:ContractWithCustomerLiabilityCurrent █▆▅▅▆▄▂▁37.4236.62535.8135.93836.31835.37434.11633.854NANANANANANANANANANANANANANANA
us-gaap:DividendsPayableCurrent ████▆▆▆▆▄▄▄▄▃▃▃▃▁▁▁▁44.9444.9444.9444.9441.91341.91341.91341.9139.11939.11939.11939.11636.44136.44136.44136.44133.99633.99633.99633.996NANANA
us-gaap:LiabilitiesCurrent █▇▆▇▇▆▅▆▆▅▃▅▄▃▂▄▃▂▁▃606.46589.123541.724587.712568.824535.36502.522547.067544.508497.864447.649509.906483.401431.021404.221469.6453.258415.502371.758445.699NANANA
us-gaap:LongTermDebtCurrent █████▇▇▇▄▁2.0211.9982.01.9791.9591.9141.8911.871.3950.925NA0.0NANANANANANANANANANANA
 us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation us-gaap:AccountsPayableAndAccruedLiabilities▁▇▃█10.73511.21610.92911.289NANANA0.0NANANANANANANANANANANANANANANA
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
 us-gaap:LongTermDebt us-gaap:FairValueByFairValueHierarchyLevel,us-gaap:FairValueByMeasurementBasis us-gaap:FairValueInputsLevel3,us-gaap:EstimateOfFairValueFairValueDisclosure▆▆█▁116.865117.604122.557101.888NANANANANANANANANANANANANANANANANANANA
 us-gaap:LongTermDebt us-gaap:FairValueByMeasurementBasis us-gaap:CarryingReportedAmountFairValueDisclosure▁▂▃▄▅▆▇█96.6197.10197.59998.0898.56899.03899.27399.73NANANA74.728NANANANANANANANANANANA
us-gaap:LongTermDebtNoncurrent ██████████▆▆▃▃▁▁94.33794.84995.34295.84296.34696.8697.38297.8698.33298.874.72674.72849.73449.74224.75324.766NANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▃▄▅▆▆█▇▄▃▁▁▁▁▁▂▁▁▁▁▁11.49514.89519.43321.60522.39632.76127.75411.9149.8280.4221.0291.4761.5091.0042.9721.8631.7630.141.51.58NANANA
 us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation us-gaap:OtherNoncurrentLiabilities▁▄▆█5.7667.6649.02110.665NANANA0.0NANANANANANANANANANANANANANANA
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:StockholdersEquity █▇▆▇▆▆▅▄▄▃▃▃▃▃▃▂▃▂▂▂▂▁▁1247.2171194.1391116.9921133.2531119.2711063.4541013.804973.672921.023880.188840.155857.344875.15853.214829.858816.91838.929815.194784.867769.503750.0732.0710.0
us-gaap:AdditionalPaidInCapitalCommonStock ███████▇▇▇▇▇▇▇▁▁▁▁▂▂16.48716.48716.48716.48316.48316.48316.48316.45916.45916.45916.46116.4716.4716.4716.29216.316.316.316.31116.311NANANA
us-gaap:RetainedEarningsAccumulatedDeficit █▇▇▇▆▆▅▄▄▄▃▃▃▃▂▂▂▂▁▁2472.1812427.9052390.8692377.5582362.9112310.6552264.8152231.4172211.0132169.6862129.12140.8532121.5352099.4322077.3462065.9112056.5672033.1872005.8751993.976NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▆▃▅▅▅▅▄▁▁▁▂▅▅▅▅███▇▅▅▅-97.531-106.333-146.444-116.868-116.203-119.764-123.574-130.284-162.529-162.037-161.486-156.059-118.935-118.768-119.86-121.381-90.018-90.373-93.399-96.864-120.705-120.184-117.601
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedDefinedBenefitPlansAdjustment▆▆▆▅▆▆▅▅▁▁▁▁▅▅▅▅████▅▅▅-113.364-116.023-118.683-121.343-119.347-120.578-121.809-123.041-158.753-158.753-158.753-158.753-123.951-123.951-123.951-123.951-99.391-99.391-99.391-99.391-124.508-124.508-124.508
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss█▇▁▆▆▆▅▄▅▅▅▆▆▆▆▆▇▇▆▆▆▆▇15.8339.69-27.7614.4753.1440.814-1.765-7.243-3.776-3.284-2.7332.6945.0165.1834.0912.579.3739.0185.9922.5273.8034.3246.907
 us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents us-gaap:AccumulatedOtherComprehensiveIncome▇▆▃▅▅▅▅▄▁▁▁▂▅▅▅▅███▇-97.531-106.333-146.444-116.868-116.203-119.764-123.574-130.284-162.529-162.037-161.486-156.059-118.935-118.768-119.86-121.381-90.018-90.373-93.399-96.864NANANA
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▇▃██▆▄▆█▆▁▆▆▆▁▇107.196107.20520.077126.661123.4590.17624.2489.271132.72181.823-40.2376.79280.84374.613-35.12298.785NANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▄▂▁▂▄█▄▃▆▅▄▅▄▅▄-103.148-32.674-82.749-92.393-74.456-21.54363.758-28.423-47.32211.086-16.739-34.248-4.469-28.865-7.081-40.306NANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▂▂▂▂▂▂▇▂█▃█▃█-45.431-45.439-45.421-42.401-42.384-42.416-42.37-39.119-39.123-14.124-39.125-11.451-36.455-11.457-36.451-9.22NANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▆▁▅▅▆▇▆▇█▁-41.38329.092-108.093-8.1336.6126.21745.62821.72946.27678.785-96.094NANANANANANANANANANANANA
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▇▇▃██▆▄▆█▆▁▆▆▆▁▇107.196107.20520.077126.661123.4590.17624.2489.271132.72181.823-40.2376.79280.84374.613-35.12298.785NANANANANANANA
us-gaap:NetIncomeLoss ▇▇▄▄█▇▆▅▆▆▅▁▄▄▃▃▄▄▃▁▃▄▂89.21681.97759.32659.58794.16987.75475.31162.31480.44679.70665.75832.05358.54358.52747.87645.78657.37661.30945.89530.13350.056.039.0
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▁▄▂▁▂▄█▄▃▆▅▄▅▄▅▄-103.148-32.674-82.749-92.393-74.456-21.54363.758-28.423-47.32211.086-16.739-34.248-4.469-28.865-7.081-40.306NANANANANANANA
us-gaap:PaymentsToAcquireProductiveAssets ▃▃▅██▃▄▁▇▁▁14.86316.3421.08633.67634.10316.84917.4117.6330.5469.438.691NANANANANANANANANANANANA
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▁▁▂▂▂▂▂▂▇▂█▃█▃█-45.431-45.439-45.421-42.401-42.384-42.416-42.37-39.119-39.123-14.124-39.125-11.451-36.455-11.457-36.451-9.22NANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ███▆▆▆▆▅▅▅▅▄▄▄▄▃▃▃▃▁▂▁▂44.9444.94144.9441.91441.91341.91441.9139.11939.1239.11939.11636.44136.44136.44236.44133.99633.99633.99733.99631.85832.031.032.0
  2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:CommonClassA


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312011-03-312010-03-31
Value52525252525252525252525252525252525252525557
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312011-03-312010-03-31
Value0.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025460.002546
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:CommonClassA


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312011-03-312010-03-31
Value46464646464646464646464646464646464646464951
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312011-03-312010-03-31
Value0.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025460.002546
Percentage of WeightedAverageNumberOfSharesOutstandingBasic0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic us-gaap:StatementClassOfStock

us-gaap:EarningsPerShareBasic

us-gaap:CommonClassA


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-03-312010-03-31
Value1.71.581.351.921.761.271.282.021.881.621.341.731.711.410.691.261.261.030.981.231.320.990.651.061.210.830.541.011.050.990.880.92
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-03-312010-03-31
Value255.0237.0203.0287.0264.0191.0192.0303.0283.0243.0201.0259.0257.0212.0103.0189.0189.0154.0147.0185.0197.0148.097.0160.0181.0125.081.0151.0158.0149.0126.48132.83
Percentage of EarningsPerShareBasic15000.015000.015037.014947.915000.015039.415000.015000.015053.215000.015000.014971.115029.215035.514927.515000.015000.014951.515000.015040.714924.214949.514923.115094.314958.715060.215000.014950.515047.615050.514372.714438.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted us-gaap:StatementClassOfStock

us-gaap:EarningsPerShareDiluted

us-gaap:CommonClassA


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-03-312010-03-31
Value1.511.411.21.711.571.131.141.81.681.441.191.541.521.260.611.121.120.910.871.091.170.870.570.941.070.740.480.90.940.880.780.82
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312011-03-312010-03-31
Value255.0237.0203.0287.0264.0191.0192.0303.0283.0243.0201.0259.0257.0212.0103.0189.0188.0154.0147.0185.0197.0148.097.0159.0180.0125.081.0151.0158.0149.0126.48132.83
Percentage of EarningsPerShareDiluted16887.416808.516916.716783.616815.316902.716842.116833.316845.216875.016890.816818.216907.916825.416885.216875.016785.716923.116896.616972.516837.617011.517017.516914.916822.416891.916875.016777.816808.516931.816215.416198.8

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value85688298122295897918294797960215859491457644953495439-36.0465049117444036-2.0534338-24.04652
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.01300.01588.4345.2684.91110.41104.6935.61097.91008.21065.2831.0309.0946.1899.0765.0241.81019.81231.11010.41101.81085.31156.1841.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value999278111102767511910695821041008364888972708693704640295197377150147156470398263436165270-70.0534425-305.0-174.0412417405-51.0228
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.01481.41333.4883.3879.31357.81279.31089.5959.51317.41359.01146.3937.41440.31345.51129.81175.61529.41782.71437.5948.8885.96315.64252.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value20181522201616251820202421173230302524293124-74.4297.09861124424447156131861464686-32.0180144-125.0-67.0138163130-20.066
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 InterestAndDividendIncomeOperating0.00.00.0298.1266.8195.0186.7287.8220.6230.5236.0303.0286.4240.5472.6491.4463.0388.4408.0515.9609.5498.0-1532.4155.02098.11316.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid

us-gaap:IncomeTaxesPaid

us-gaap:IncomeTaxesPaid


Income
Period End2020-09-302019-09-30
Value4621
Percentage of IncomeTaxesPaid100.0100.0
Percentage of InterestAndDividendIncomeOperating622.7238.6

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value400.00126-0.375112140-0.1382929-0.0680.276352248-0.2343527420.258-239.65398176726428841476591463.0-19.019175522925-8.021-36.020787.0
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.0338.3-4.4139.0238.6482.6-1.6343.7365.7-0.93.8518.4368.5723.8-3.6590.9478.7803.75.3-4934.22170.53767.91554.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value1039000.01009000.0723000.03000.02000.03000.024000.0111000.0272000.0449000.0596000.0709000.0602000.0553000.0438000.0377000.0257000.0166000.0101000.0
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.31.33.35.16.98.98.17.66.46.13.92.61.7

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1038000.01044000.0688000.01000.0-10000.014000.00134000.0271000.0448000.0557000.0755000.0515000.0550000.0333000.0380000.0161000.0164000.0
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.0-0.10.20.01.53.35.16.59.56.97.64.86.22.42.5

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
Value79736289815959948775628079653258584745576145305056392647494636464437305143362647524412544947
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 InterestAndDividendIncomeOperating0.00.00.01183.21066.6688.4692.61070.01058.7859.0723.51014.51072.6905.8464.8948.8882.5741.5767.61013.51173.2939.5620.41107.41198.9841.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value7973898159948775807965
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.01183.21066.6688.41070.01058.7859.01014.51072.6905.8
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:CommonClassA


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7872628881585993877461797965315858474556604529495538
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.01173.61057.8682.8687.01061.21050.0852.0717.61006.11063.8898.3461.0941.1875.3735.4761.31005.21163.5931.8615.31088.71192.3831.3
Percentage of InterestAndDividendIncomeOperating us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.6470.6020.5150.730.6710.4860.4880.7710.7180.6170.510.6590.6530.5380.2630.4790.4790.3920.3750.470.5020.3750.2460.4060.460.318
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic0.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.8
Percentage of InterestAndDividendIncomeOperating0.00.00.09.78.75.65.78.88.77.05.98.38.87.43.87.87.26.16.38.39.67.75.19.09.86.9
Percentage of InterestAndDividendIncomeOperating us-gaap:CommonClassB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:CommonClassB


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value647000.0602000.0671000.0486000.0
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.08.75.6
Percentage of InterestAndDividendIncomeOperating us-gaap:CommonClassB0.00.00.00.0

Net Investment Income

us-gaap:NetInvestmentIncome

us-gaap:NetInvestmentIncome


Net
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.037.3738.3698.28.6528.038.5178.6267.6597.1046.826.4245.976.2365.9785.6635.3314.8914.662-342.209120127113111115111109106109104103112105113108107108113105111110108104
Percentage of NetInvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating93.295.997.195.398.396.997.1100.296.695.693.993.296.894.092.694.994.293.695.4-7045.72657.82718.92439.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Nonoperating Income Expense

us-gaap:NonoperatingIncomeExpense

us-gaap:NonoperatingIncomeExpense


Nonoperating
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value16171611-9.195139.6529.795
Percentage of NonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.0218.0150.3-106.7154.6116.4111.7

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value594554544557565531528532551507501515526494343361365332322336338307314328331298301308306267
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.07390.77361.86162.16137.96054.36648.65794.35825.06499.87080.36812.64980.35861.55511.55153.85413.75938.06470.16285.86476.07272.47100.86440.80.00.00.00.0

us-gaap:OperatingExpenses us-gaap:ProductOrService

erie:AdministrativeServicesReimbursements


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
Value157153158147151151150142146142147140146145
Percentage of OperatingExpenses26.427.729.126.526.928.528.526.826.528.029.427.227.829.5
Percentage of InterestAndDividendIncomeOperating0.00.00.01959.01977.21758.61751.81621.71762.51625.21714.81767.61971.62010.5
Percentage of InterestAndDividendIncomeOperating erie:AdministrativeServicesReimbursements0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:PolicyIssuanceandRenewalServices


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value437400385409413379377390405365354375379348342361365
Percentage of OperatingExpenses73.672.370.973.573.171.571.573.273.572.070.672.872.270.599.899.999.9
Percentage of InterestAndDividendIncomeOperating0.00.00.05431.65384.74403.54386.14432.54886.14169.14110.34732.15108.74802.14970.75855.05505.4
Percentage of InterestAndDividendIncomeOperating erie:PolicyIssuanceandRenewalServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value85766596918568105968674969577578083665682856741686952
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.01276.21186.4994.3798.61203.41165.5982.3868.01219.41282.81068.4840.51310.11252.21030.4950.31453.01641.01385.2861.41512.51498.21131.7

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value680630609653657616596638647594576612621572401442448399379418423374356134616321605158914261598151116971577142615711372146011601520141879612451365140113579161216
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.08666.98548.37156.46936.47257.67814.16776.66693.07719.18363.07881.05820.87171.76763.66184.26364.07391.08111.17671.07337.529811.734939.034642.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

erie:AdministrativeServicesManagementFee


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1414141414141414141313131313
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.42.52.32.32.42.52.32.22.32.42.22.12.3
Percentage of InterestAndDividendIncomeOperating0.00.00.0197.7192.7171.4170.0164.0171.3159.1159.5170.5179.0180.1
Percentage of InterestAndDividendIncomeOperating erie:AdministrativeServicesManagementFee0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:AdministrativeServicesReimbursements


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value157153158147151151150142146142147140146145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.124.426.022.623.124.625.322.322.624.025.622.923.625.5
Percentage of InterestAndDividendIncomeOperating0.00.00.01959.01977.21758.61751.81621.71762.51625.21714.81767.61971.62010.5
Percentage of InterestAndDividendIncomeOperating erie:AdministrativeServicesReimbursements0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:PolicyIssuanceandRenewalServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value502455429484483443424474480430407451454405394435441
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.972.370.574.173.672.071.174.374.272.570.773.773.171.098.298.498.4
Percentage of InterestAndDividendIncomeOperating0.00.00.06426.46294.55149.14934.75390.65797.04916.04733.05691.86117.25592.05714.07053.76654.4
Percentage of InterestAndDividendIncomeOperating erie:PolicyIssuanceandRenewalServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:ServiceAgreement


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.9026.0796.3796.316.4466.6626.8737.1556.9076.6927.387.0727.087.1457.3687.2787.245
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.91.01.01.01.01.11.21.11.11.11.31.21.11.21.81.61.6
Percentage of InterestAndDividendIncomeOperating0.00.00.083.783.977.379.981.383.376.385.789.295.398.4106.8118.0109.2
Percentage of InterestAndDividendIncomeOperating erie:ServiceAgreement0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService

erie:AdministrativeServices, us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value171168173162166166165157160156161153159159
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax25.326.728.424.925.427.027.724.624.726.328.025.125.727.8
Percentage of InterestAndDividendIncomeOperating0.00.00.02156.82169.91930.01921.81785.71933.81784.31874.31938.12150.52190.6
Percentage of InterestAndDividendIncomeOperating erie:AdministrativeServices us-gaap:TransferredOverTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:AdministrativeServicesManagementFee, us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1414141414141414141313131313
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.42.52.32.32.42.52.32.22.32.42.22.12.3
Percentage of InterestAndDividendIncomeOperating0.00.00.0197.7192.7171.4170.0164.0171.3159.1159.5170.5179.0180.1
Percentage of InterestAndDividendIncomeOperating erie:AdministrativeServicesManagementFee us-gaap:TransferredOverTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:AdministrativeServicesReimbursements, us-gaap:TransferredOverTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value157153158147151151150142146142147140146145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax23.124.426.022.623.124.625.322.322.624.025.622.923.625.5
Percentage of InterestAndDividendIncomeOperating0.00.00.01959.01977.21758.61751.81621.71762.51625.21714.81767.61971.62010.5
Percentage of InterestAndDividendIncomeOperating erie:AdministrativeServicesReimbursements us-gaap:TransferredOverTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:PolicyIssuanceandRenewalServices, us-gaap:TransferredAtPointInTime


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value502455429484483443424474480430407451454405394435441
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax73.972.370.574.173.672.071.174.374.272.570.773.773.171.098.298.498.4
Percentage of InterestAndDividendIncomeOperating0.00.00.06426.46294.55149.14934.75390.65797.04916.04733.05691.86117.25592.05714.07053.76654.4
Percentage of InterestAndDividendIncomeOperating erie:PolicyIssuanceandRenewalServices us-gaap:TransferredAtPointInTime0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value680630609653657616596638647594576612621572401442448399379418423374356134616321605158914261598151116971577142615711372146011601520141879612451365140113579161216
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 InterestAndDividendIncomeOperating0.00.00.08666.98548.37156.46936.47257.67814.16776.66693.07719.18363.07881.05820.87171.76763.66184.26364.07391.08111.17671.07337.529811.734939.034642.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value21632099211721592082195720161974188917991778175916521573166516311567149015481485141413401407181151806917993177581757817460169311667616384158791579115441155441504214832143481426314723145531434413287
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

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
Value918890929912888840882855826785804838772733808756714660732646599555637999099079856977597429639924191269185891187748650870184458156805581658341800280107562
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 Assets42.542.443.942.242.742.943.843.343.743.745.247.746.746.648.546.445.644.347.343.542.441.545.355.154.854.855.055.455.254.654.756.156.155.656.056.056.155.056.157.256.755.055.856.9

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
Value21632099211721592082195720161974188917991778175916521573166516311567149015481485141413401407181151806917993177581757817460169311667616384158791579115441155441504214832143481426314723145531434413287
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

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1245120811881247119411161133111910631013973921880840857875853829816838815784769750732710703771755742734657647636642782766776781845866912
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets57.557.656.157.857.357.156.256.756.356.354.852.353.353.451.553.654.455.752.756.557.658.554.74.14.13.94.04.44.34.44.44.04.14.04.25.05.15.25.45.95.96.4

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

erie:DeferredCompensation


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value21171716161312121212111110119.5789.7569.0180.00.00.0
Percentage of StockholdersEquity1.71.51.51.31.41.21.11.11.11.31.21.21.21.31.11.21.20.00.00.0
Percentage of Assets1.00.80.80.80.80.70.60.60.60.70.60.60.70.70.60.60.60.00.00.0
Percentage of Assets erie:DeferredCompensation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-77.293-83.432-78.143-97.531-106.333-146.444-116.868-116.203-119.764-123.574-130.284-162.529-162.037-161.486-156.059-121.381-96.864-117.701-59.099-133.191
Percentage of StockholdersEquity-6.2-6.9-6.6-7.8-8.9-13.1-10.3-10.4-11.3-12.2-13.4-17.6-18.4-19.2-18.2-14.9-12.6-16.7-8.1-20.7
Percentage of Assets-3.6-4.0-3.7-4.5-5.1-7.5-5.8-5.9-6.3-6.9-7.3-9.2-9.8-10.3-9.4-7.8-6.9-0.7-0.4-0.9
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1616161616161616161616161616161616161616
Percentage of StockholdersEquity1.31.41.41.31.41.51.51.51.51.61.71.81.92.01.92.02.12.32.22.5
Percentage of Assets0.80.80.80.80.80.80.80.80.90.90.90.91.01.01.01.11.20.10.10.1
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value24492418239324722427239023772362231022642231221121692129214020651993194819011852
Percentage of StockholdersEquity196.8200.2201.5198.2203.3214.0209.8211.1217.3223.4229.2240.1246.5253.4249.7252.9259.1277.2259.1288.5
Percentage of Assets113.2115.2113.1114.5116.6122.1117.9119.7122.3125.9125.5125.7131.3135.3128.5133.4141.711.011.412.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-1167.211-1163.64-1163.67-1162.917-1162.546-1159.682-1158.91-1158.62-1158.3-1158.779-1157.625-1157.31-1156.999-1157.331-1155.668-1155.846-1155.108-1146.09-1126.883-1095.635
Percentage of StockholdersEquity-93.7-96.3-97.9-93.2-97.4-103.8-102.3-103.5-108.9-114.3-118.9-125.7-131.4-137.8-134.8-141.5-150.1-163.0-153.5-170.7
Percentage of Assets-53.9-55.4-55.0-53.9-55.8-59.2-57.5-58.7-61.3-64.4-65.1-65.8-70.0-73.6-69.4-74.6-82.1-6.5-6.8-7.1
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets Current

us-gaap:AssetsCurrent

us-gaap:AssetsCurrent


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value7467017327928598108919349379621168888828720801720671625665627597557635533
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets34.533.434.636.741.341.444.247.349.653.565.750.550.145.848.144.242.842.043.042.342.241.645.13.0

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
Value156135161216257228336344338312266244198119215189
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.26.47.610.012.411.716.717.517.917.315.013.912.07.612.912.2

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent

us-gaap:AccountsReceivableNetCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value504481494501506482468
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets23.322.923.423.224.324.623.2

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent

us-gaap:PrepaidExpenseAndOtherAssetsCurrent


Prepaid
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value596249526058444742493644454334353639302933372426
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.83.02.42.42.93.02.22.42.22.82.12.52.72.72.12.22.32.61.92.02.42.81.80.1

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:Equipment


Property
Period End2020-12-312019-12-31
Value3714
Percentage of PropertyPlantAndEquipmentGross100.0100.0
Percentage of Assets1.80.7
Percentage of Assets us-gaap:Equipment0.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2020-12-312019-12-312018-12-31
Value201.9340.0
Percentage of PropertyPlantAndEquipmentGross56.113.30.0
Percentage of Assets1.00.10.0
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.0

us-gaap:LandBuildingsAndImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1215.0680.07.6277.6277.627
Percentage of PropertyPlantAndEquipmentGross324.234.80.00.00.00.0
Percentage of Assets5.70.30.00.50.50.5
Percentage of Assets us-gaap:LandBuildingsAndImprovements0.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1.3131.3130.6171.3751.3751.171
Percentage of PropertyPlantAndEquipmentGross3.59.00.00.00.00.0
Percentage of Assets0.10.10.00.10.10.1
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302011-12-312010-12-31
Value121715192224373129194751525336353540514440372.01.02.04243393716-128.0-283.0
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.90.81.01.21.42.11.91.81.22.93.33.53.52.42.52.62.90.30.20.20.20.00.00.00.30.30.20.20.1-0.9-2.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OtherNoncurrentAssets


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value14161920220.0
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.00.0
Percentage of Assets0.70.80.91.01.10.0
Percentage of Assets us-gaap:OtherNoncurrentAssets0.00.00.00.00.00.0

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:PropertyPlantAndEquipmentByType, us-gaap:RelatedPartyTransactionsByRelatedParty

erie:OfficeSpace, erie:ErieInsuranceExchange


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.37.89.21011131416
Percentage of OperatingLeaseRightOfUseAsset43.846.347.852.552.20.00.00.0
Percentage of Assets0.30.40.40.50.60.70.80.9
Percentage of Assets erie:OfficeSpace erie:ErieInsuranceExchange0.00.00.00.00.00.00.00.0

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent

us-gaap:OtherAssetsNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value484440323232969589926162474528292221201918192021
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.11.91.51.61.74.84.84.75.23.53.62.92.91.71.81.41.41.31.31.31.51.50.1

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-30
Value0.2070.1460.0190.01.4160.02.3811212111212
Percentage of EquitySecuritiesFvNi100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.10.00.10.70.70.70.70.8

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent


Accounts
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value15016815014813713013413112412311111397951049986818894907988
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets6.98.07.16.96.66.66.76.76.66.86.36.45.96.16.36.15.55.55.76.46.45.96.3

Contract With Customer Liability Current

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:ContractWithCustomerLiabilityCurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value3535363736353536353433
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.71.71.71.81.81.81.81.91.91.9

Dividends Payable Current

us-gaap:DividendsPayableCurrent

us-gaap:DividendsPayableCurrent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value484848444444444141414139393939363636363333333331
Percentage of DividendsPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.22.32.32.12.22.32.22.12.22.32.42.22.42.52.32.22.32.42.42.32.42.52.40.2

Liabilities Current

us-gaap:LiabilitiesCurrent

us-gaap:LiabilitiesCurrent


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value591571627606589541587568535502547544497447509483431404469453415371445400
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets27.427.229.628.128.327.729.128.828.327.930.830.930.128.430.629.627.527.130.330.529.427.731.72.3

Long Term Debt Current

us-gaap:LongTermDebtCurrent

us-gaap:LongTermDebtCurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2064000.02053000.02031000.02021000.01998000.02000000.01979000.01959000.01914000.01891000.01870000.01395000.0925000.00
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.0

Operating Lease Liability Current

us-gaap:OperatingLeaseLiabilityCurrent us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:AccountsPayableAndAccruedLiabilities


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value10101110110.0
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.00.0
Percentage of Assets0.50.50.50.60.60.0
Percentage of Assets us-gaap:AccountsPayableAndAccruedLiabilities0.00.00.00.00.00.0

Long Term Debt

us-gaap:LongTermDebt us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebt

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value10399113116117122101
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.84.75.35.45.66.35.1
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Long
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
Value959596969797989899999974
Percentage of LongTermDebt92.395.985.082.782.679.696.30.00.00.00.00.0
Percentage of Assets4.44.64.54.54.75.04.95.05.25.55.64.5
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.0

Long Term Debt Noncurrent

us-gaap:LongTermDebtNoncurrent

us-gaap:LongTermDebtNoncurrent


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value92939394949595969697979898747449492424
Percentage of LongTermDebtNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.34.44.44.44.64.94.84.95.15.45.55.66.04.74.53.03.21.71.6

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent

us-gaap:OtherLiabilitiesNoncurrent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value17179.44411141921223227119.8280.4221.0291.4761.5091.0042.9721.8631.7630.141.51.581.113
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.40.50.71.01.11.11.71.50.70.60.00.10.10.10.10.20.10.10.00.10.10.0

Operating Lease Liability Noncurrent

us-gaap:OperatingLeaseLiabilityNoncurrent us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiabilityNoncurrent

us-gaap:OtherNoncurrentLiabilities


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3.6435.7667.6649.021100.0
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.00.0
Percentage of Assets0.20.30.40.50.50.0
Percentage of Assets us-gaap:OtherNoncurrentLiabilities0.00.00.00.00.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability us-gaap:BalanceSheetLocation

us-gaap:OperatingLeaseLiability

erie:Liabilities


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value14161819210.0
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.00.0
Percentage of Assets0.70.80.91.01.10.0
Percentage of Assets erie:Liabilities0.00.00.00.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1245120811881247119411161133111910631013973921880840857875853829816838815784769750732710703771755742734657647636642782766776781845866912
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets57.557.656.157.857.357.156.256.756.356.354.852.353.353.451.553.654.455.752.756.557.658.554.74.14.13.94.04.44.34.44.44.04.14.04.25.05.15.25.45.95.96.4

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

erie:DeferredCompensation


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value21171716161312121212111110119.5789.7569.0180.00.00.0
Percentage of StockholdersEquity1.71.51.51.31.41.21.11.11.11.31.21.21.21.31.11.21.20.00.00.0
Percentage of Assets1.00.80.80.80.80.70.60.60.60.70.60.60.70.70.60.60.60.00.00.0
Percentage of Assets erie:DeferredCompensation0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-77.293-83.432-78.143-97.531-106.333-146.444-116.868-116.203-119.764-123.574-130.284-162.529-162.037-161.486-156.059-121.381-96.864-117.701-59.099-133.191
Percentage of StockholdersEquity-6.2-6.9-6.6-7.8-8.9-13.1-10.3-10.4-11.3-12.2-13.4-17.6-18.4-19.2-18.2-14.9-12.6-16.7-8.1-20.7
Percentage of Assets-3.6-4.0-3.7-4.5-5.1-7.5-5.8-5.9-6.3-6.9-7.3-9.2-9.8-10.3-9.4-7.8-6.9-0.7-0.4-0.9
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value1616161616161616161616161616161616161616
Percentage of StockholdersEquity1.31.41.41.31.41.51.51.51.51.61.71.81.92.01.92.02.12.32.22.5
Percentage of Assets0.80.80.80.80.80.80.80.80.90.90.90.91.01.01.01.11.20.10.10.1
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value24492418239324722427239023772362231022642231221121692129214020651993194819011852
Percentage of StockholdersEquity196.8200.2201.5198.2203.3214.0209.8211.1217.3223.4229.2240.1246.5253.4249.7252.9259.1277.2259.1288.5
Percentage of Assets113.2115.2113.1114.5116.6122.1117.9119.7122.3125.9125.5125.7131.3135.3128.5133.4141.711.011.412.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-31
Value-1167.211-1163.64-1163.67-1162.917-1162.546-1159.682-1158.91-1158.62-1158.3-1158.779-1157.625-1157.31-1156.999-1157.331-1155.668-1155.846-1155.108-1146.09-1126.883-1095.635
Percentage of StockholdersEquity-93.7-96.3-97.9-93.2-97.4-103.8-102.3-103.5-108.9-114.3-118.9-125.7-131.4-137.8-134.8-141.5-150.1-163.0-153.5-170.7
Percentage of Assets-53.9-55.4-55.0-53.9-55.8-59.2-57.5-58.7-61.3-64.4-65.1-65.8-70.0-73.6-69.4-74.6-82.1-6.5-6.8-7.1
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value161616161616161616161616161616161616161616161616
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.80.80.80.80.80.80.80.90.90.90.91.01.01.01.01.11.11.11.11.21.21.20.1

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value244924182393247224272390237723622310226422312211216921292140212120992077206520562033200519931948
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets113.2115.2113.1114.5116.6122.1117.9119.7122.3125.9125.5125.7131.3135.3128.5130.0134.0139.4133.4138.5143.7149.6141.711.0

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value-77.293-83.432-78.143-97.531-106.333-146.444-116.868-116.203-119.764-123.574-130.284-162.529-162.037-161.486-156.059-118.935-118.768-119.86-121.381-90.018-90.373-93.399-96.864-120.705-120.184-117.601-117.701-59.099-133.191
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.6-4.0-3.7-4.5-5.1-7.5-5.8-5.9-6.3-6.9-7.3-9.2-9.8-10.3-9.4-7.3-7.6-8.0-7.8-6.1-6.4-7.0-6.9-0.7-0.7-0.7-0.7-0.4-0.9

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value-94.43-97.893-101.356-113.364-116.023-118.683-121.343-119.347-120.578-121.809-123.041-158.753-158.753-158.753-158.753-123.951-123.951-123.951-123.951-99.391-99.391-99.391-99.391-124.508-124.508-124.508-124.508-65.083-146.516
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax122.2117.3129.7116.2109.181.0103.8102.7100.798.694.497.798.098.3101.7104.2104.4103.4102.1110.4110.0106.4102.6103.2103.6105.9105.8110.1110.0
Percentage of Assets-4.4-4.7-4.8-5.2-5.6-6.1-6.0-6.0-6.4-6.8-6.9-9.0-9.6-10.1-9.5-7.6-7.9-8.3-8.0-6.7-7.0-7.4-7.1-0.7-0.7-0.7-0.7-0.4-0.9
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-31
Value171423159.69-27.7614.4753.1440.814-1.765-7.243-3.776-3.284-2.7332.6945.0165.1834.0912.579.3739.0185.9922.5273.8034.3246.9076.8075.98413
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax-22.2-17.3-29.7-16.2-9.119.0-3.8-2.7-0.71.45.62.32.01.7-1.7-4.2-4.4-3.4-2.1-10.4-10.0-6.4-2.6-3.2-3.6-5.9-5.8-10.1-10.0
Percentage of Assets0.80.71.10.70.5-1.40.20.20.0-0.1-0.4-0.2-0.2-0.20.20.30.30.30.20.60.60.40.20.00.00.00.00.00.1
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value-77.293-83.432-78.143-97.531-106.333-146.444-116.868-116.203-119.764-123.574-130.284-162.529-162.037-161.486-156.059-118.935-118.768-119.86-121.381-90.018-90.373-93.399-96.864-117.701-59.099
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.6-4.0-3.7-4.5-5.1-7.5-5.8-5.9-6.3-6.9-7.3-9.2-9.8-10.3-9.4-7.3-7.6-8.0-7.8-6.1-6.4-7.0-6.9-0.7-0.4
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value94331081071072012612390248913281-40.23768074-35.122981089218527
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.01421.71394.8233.01472.31402.71087.9276.51036.51673.71101.1-554.11113.61310.31125.0-543.91656.10.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value-24.683-10.828-24.654-103.148-32.674-82.749-92.393-74.456-21.54363-28.423-47.32211-16.739-34.248-4.469-28.865-7.081-40.306-143.0-254.0-131.0-49.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.0-1368.0-425.1-960.2-1074.0-846.0-259.9727.2-330.0-596.7149.2-230.6-496.6-72.4-435.2-109.7-675.70.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value-48709000.0-48702000.0-138580000.0-45431000.0-45439000.0-45421000.0-42401000.0-42384000.0-42416000.0-42370000.0-39119000.0-39123000.0-14124000.0-39125000.0-11451000.0-36455000.0-11457000.0-36451000.0-9220000.0-67000000.0-57000000.0-33000000.0-10000000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.0-602.5-591.2-527.0-492.9-481.6-511.7-483.3-454.2-493.4-190.1-538.9-166.1-590.8-172.8-564.5-154.60.00.00.00.0

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
Value20-26.048-55.115-41.38329-108.093-8.1336.612645214678-96.094
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.0-548.8378.5-1254.3-94.575.1316.3520.5252.3583.61060.2-1323.6

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value94331081071072012612390248913281-40.23768074-35.122981089218527
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.01421.71394.8233.01472.31402.71087.9276.51036.51673.71101.1-554.11113.61310.31125.0-543.91656.10.00.00.00.0

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
Value79736289815959948775628079653258584745576145305056392647494636464437305143362647524412544947
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 InterestAndDividendIncomeOperating0.00.00.01183.21066.6688.4692.61070.01058.7859.0723.51014.51072.6905.8464.8948.8882.5741.5767.61013.51173.2939.5620.41107.41198.9841.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value7973898159948775807965
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.01183.21066.6688.41070.01058.7859.01014.51072.6905.8
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value-24.683-10.828-24.654-103.148-32.674-82.749-92.393-74.456-21.54363-28.423-47.32211-16.739-34.248-4.469-28.865-7.081-40.306-143.0-254.0-131.0-49.0
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.0-1368.0-425.1-960.2-1074.0-846.0-259.9727.2-330.0-596.7149.2-230.6-496.6-72.4-435.2-109.7-675.70.00.00.00.0

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value17113.239141621333416177.63309.438.691
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312011-06-302011-03-312010-06-302010-03-31
Value-48709000.0-48702000.0-138580000.0-45431000.0-45439000.0-45421000.0-42401000.0-42384000.0-42416000.0-42370000.0-39119000.0-39123000.0-14124000.0-39125000.0-11451000.0-36455000.0-11457000.0-36451000.0-9220000.0-67000000.0-57000000.0-33000000.0-10000000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating0.00.00.0-602.5-591.2-527.0-492.9-481.6-511.7-483.3-454.2-493.4-190.1-538.9-166.1-590.8-172.8-564.5-154.60.00.00.00.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value48481384444444141414139393939363636363333333331323132303029302828280.01492726272525262624242525
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Effective Income Tax Rate Continuing Operations

us-gaap:EffectiveIncomeTaxRateContinuingOperations

us-gaap:EffectiveIncomeTaxRateContinuingOperations


Effective
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value20.920.520.10.20.2210.2120.1720.2120.230.2110.21
Percentage of EffectiveIncomeTaxRateContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value003088000.0000
Percentage of UnrecognizedTaxBenefits0.00.0100.00.00.00.0

erie:AdministrativeServicesExpensesPaid

erie:AdministrativeServicesExpensesPaid


Administrative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value148161158142148149157133148143152132148146
Percentage of AdministrativeServicesExpensesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:AdministrativeServicesReimbursementsReceived

erie:AdministrativeServicesReimbursementsReceived


Administrative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value143157155152139140167124148148146130147150
Percentage of AdministrativeServicesReimbursementsReceived100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLoss

erie:AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLoss


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-87000.086000.0122000.017000.03053000.02000.031000.084000.078000.0
Percentage of AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLossRecoveryNet

erie:AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLossRecoveryNet


Available
Period End2021-06-302020-06-30
Value1000.017000.0
Percentage of AvailableForSaleDebtSecuritiesAndFinancingReceivablesImpairmentLossRecoveryNet100.0100.0

erie:AvailableForSaleDebtSecuritiesImpairmentLoss

erie:AvailableForSaleDebtSecuritiesImpairmentLoss


Available
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-87000.0-41000.0122000.017000.02883000.02000.031000.084000.078000.0
Percentage of AvailableForSaleDebtSecuritiesImpairmentLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:AvailableForSaleDebtSecuritiesImpairmentLossRecovery

erie:AvailableForSaleDebtSecuritiesImpairmentLossRecovery


Available
Period End2021-06-302020-06-30
Value1000.017000.0
Percentage of AvailableForSaleDebtSecuritiesImpairmentLossRecovery100.0100.0

erie:DebtSecuritiesAvailableforsaleSellbeforeRecovery

erie:DebtSecuritiesAvailableforsaleSellbeforeRecovery


Debt
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value37000.002242000.031000.084000.078000.0
Percentage of DebtSecuritiesAvailableforsaleSellbeforeRecovery100.00.0100.0100.0100.0100.0

erie:DeferredCompensationUnderRabbiTrustPlans us-gaap:StatementEquityComponents

erie:DeferredCompensationUnderRabbiTrustPlans

erie:DeferredCompensation


Deferred
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value3668000.0846000.0371000.03568000.0772000.0320000.0443000.01154000.0311000.0276000.01663000.0
Percentage of DeferredCompensationUnderRabbiTrustPlans100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Deferred
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-3668000.0-846000.0-371000.0-3568000.0-772000.0-320000.0-443000.0-1154000.0-311000.0-276000.0-1663000.0
Percentage of DeferredCompensationUnderRabbiTrustPlans-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

erie:DefinedBenefitPlanPostretirementBenefitExpensesReimbursementPercentage us-gaap:RelatedPartyTransactionsByRelatedParty

erie:DefinedBenefitPlanPostretirementBenefitExpensesReimbursementPercentage

erie:ErieInsuranceExchange


Defined
Period End2021-06-302021-03-312020-12-31
Value058.01.0
Percentage of DefinedBenefitPlanPostretirementBenefitExpensesReimbursementPercentage0.0100.0100.0

erie:DistributionsFromRabbiTrustPlans us-gaap:StatementEquityComponents

erie:DistributionsFromRabbiTrustPlans

erie:DeferredCompensation


Distributions
Period End2021-06-302021-03-312020-06-302019-06-302018-06-30
Value97000.0876000.0704000.0922000.0608000.0
Percentage of DistributionsFromRabbiTrustPlans100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Distributions
Period End2021-06-302021-03-312020-06-302019-06-302018-06-30
Value-97000.0-876000.0-704000.0-922000.0-608000.0
Percentage of DistributionsFromRabbiTrustPlans-100.0-100.0-100.0-100.0-100.0

erie:IncrementalCommonSharesAttributableToConversionOfConvertibleCommonStock us-gaap:StatementClassOfStock

erie:IncrementalCommonSharesAttributableToConversionOfConvertibleCommonStock

us-gaap:CommonClassA


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6100800.06100800.006100800.06100800.06100800.006100800.06100800.06100800.006100800.06100800.06100800.006100800.06100800.06100800.006100800.06100800.06100800.006100800.06100800.06100800.0
Percentage of IncrementalCommonSharesAttributableToConversionOfConvertibleCommonStock100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

erie:InterestAndDividendIncomeOperatingAndEquityMethodInvestmentDividendsOrDistributions

erie:InterestAndDividendIncomeOperatingAndEquityMethodInvestmentDividendsOrDistributions


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value13175.3574.913
Percentage of InterestAndDividendIncomeOperatingAndEquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0

erie:NetInvestmentIncomeAndIncomeLossFromEquityMethodInvestments

erie:NetInvestmentIncomeAndIncomeLossFromEquityMethodInvestments


Net
Period End2021-06-302021-03-312020-06-302020-03-31
Value13175.0444.664
Percentage of NetInvestmentIncomeAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0

erie:NetTreasuryStockValueAcquiredHeldAndReissued

erie:NetTreasuryStockValueAcquiredHeldAndReissued


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0-9000.000-4000.000-24000.002000.09000.0
Percentage of NetTreasuryStockValueAcquiredHeldAndReissued0.0100.00.00.0100.00.00.0100.00.0100.0100.0

erie:NetTreasuryStockValueAcquiredHeldAndReissued us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0-9000.000-4000.000-24000.002000.09000.0
Percentage of NetTreasuryStockValueAcquiredHeldAndReissued0.0100.00.00.0100.00.00.0100.00.0100.0100.0

erie:OperatingLeaseCostAmountReimbursed us-gaap:RelatedPartyTransactionsByRelatedParty

erie:OperatingLeaseCostAmountReimbursed

erie:ErieInsuranceExchange


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1200000.01300000.01400000.01400000.01400000.01500000.01600000.01500000.0
Percentage of OperatingLeaseCostAmountReimbursed100.0100.0100.0100.0100.0100.0100.0100.0

erie:OtherExpense

erie:OtherExpense


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value548000.0519000.0258000.0366000.0
Percentage of OtherExpense100.0100.0100.0100.0

erie:OtherIncomeExpense

erie:OtherIncomeExpense


Other
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-964000.0-258000.0-366000.0100000.048000.047000.0
Percentage of OtherIncomeExpense100.0100.0100.0100.0100.0100.0

erie:PaymentsForAgentBonuses

erie:PaymentsForAgentBonuses


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4.5791113.9264.1163.1973.5333.7223.8511043.6574.0633.9871223.8813.8063.7811113.3563.3333.2371033.2543.251079
Percentage of PaymentsForAgentBonuses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:PaymentsforOtherLaborRelatedExpenses

erie:PaymentsforOtherLaborRelatedExpenses


Paymentsfor
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value8.4158.1528.1056.2249.7389.8411110
Percentage of PaymentsforOtherLaborRelatedExpenses100.0100.0100.0100.0100.0100.0100.0100.0

erie:ProceedsFromInsuranceAgencyManagementFeesReceived

erie:ProceedsFromInsuranceAgencyManagementFeesReceived


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value499486453496484453457484469433441450440418401419416389381398393363360379372341
Percentage of ProceedsFromInsuranceAgencyManagementFeesReceived100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:ProceedsFromInterestAndDividendsReceivedAndEquityMethodInvestmentDividendsOrDistributions

erie:ProceedsFromInterestAndDividendsReceivedAndEquityMethodInvestmentDividendsOrDistributions


Proceeds
Period End2021-06-302021-03-312020-06-302020-03-31
Value8.8629.8739.1319.618
Percentage of ProceedsFromInterestAndDividendsReceivedAndEquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0

erie:ProceedsFromSaleOfEquitySecurities

erie:ProceedsFromSaleOfEquitySecurities


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value13161922134.505
Percentage of ProceedsFromSaleOfEquitySecurities100.0100.0100.0100.0100.0100.0

erie:RevenueRecognitionManagementFeeReturnedPremiumCancellationAllowance

erie:RevenueRecognitionManagementFeeReturnedPremiumCancellationAllowance


Revenue
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-800000.0900000.03500000.002000000.0900000.0
Percentage of RevenueRecognitionManagementFeeReturnedPremiumCancellationAllowance100.0100.0100.00.0100.0100.0

erie:TransferBetweenInvestmentCategories

erie:TransferBetweenInvestmentCategories


Transfer
Period End2020-12-312020-09-302019-12-312019-09-30
Value0.08.8533.310.0
Percentage of TransferBetweenInvestmentCategories0.0100.0100.00.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
Period End2021-06-302020-06-30
Value1010
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0

us-gaap:DebtAndEquitySecuritiesGainLoss

us-gaap:DebtAndEquitySecuritiesGainLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2769000.0804000.04757000.05915000.06526000.0-10806000.0602000.01696000.01302000.02503000.0
Percentage of DebtAndEquitySecuritiesGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal

us-gaap:DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-30
Value1000.0-87000.0-36000.085000.017000.0641000.00
Percentage of DebtSecuritiesAvailableForSaleChangeInPresentValueExpenseReversal100.0100.0100.0100.0100.0100.00.0

us-gaap:DebtSecuritiesAvailableForSaleGainLoss

us-gaap:DebtSecuritiesAvailableForSaleGainLoss


Debt
Period End2021-06-302020-06-30
Value397000.0355000.0
Percentage of DebtSecuritiesAvailableForSaleGainLoss100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain


Debt
Period End2021-06-302020-06-30
Value1075000.01721000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain us-gaap:FinancialInstrument

us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1923000.0521000.0604000.01721000.01074000.0618000.01320000.02062000.02258000.0792000.0525000.0235000.0340000.0288000.01621000.0507000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGain0.00.00.0100.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment

us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1483000.0228000.0137000.0355000.0615000.0390000.01072000.01239000.01918000.0-885000.0-1000.0-66000.0-345000.0-207000.0899000.0126000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedGainLossExcludingOtherThanTemporaryImpairment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss


Debt
Period End2021-06-302020-06-30
Value678000.01366000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment

us-gaap:DebtSecurities


Debt
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value440000.0293000.0467000.01366000.0459000.0228000.0248000.0823000.0340000.01677000.0526000.0301000.0685000.0495000.0722000.0381000.0
Percentage of DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-4026000.0-4027000.0-3032000.0-3031000.0-3031000.0-3031000.0-1278000.0-1279000.0-1278000.0-1278000.0-3203000.0-3202000.0-3202000.0-3202000.0-2326000.0-2325000.0-2325000.0-2325000.0-2027000.0-2029000.0-2027000.0-2028000.0-4031000.0-3000000.0-4000000.0-3000000.0-1000000.0-2000000.0-1000000.0-2000000.0-4000000.0-4000000.0-3000000.0-4000000.0-3000000.0-2000000.0-3000000.0-3000000.0-2000000.0-1000000.0-1000000.0-2000000.00-1000000.0-1000000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value357000.0357000.0336000.0336000.0335000.0336000.0348000.0349000.0348000.0349000.0338000.0339000.0338000.0338000.0217000.0218000.0218000.0218000.0174000.0174000.0174000.0174000.0-330000.001000000.00001000000.00001000000.0001000000.00001000000.00001000000.00
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.0100.00.00.00.0100.00.00.0100.00.00.00.0100.00.00.00.0100.00.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1212121212121111111112121212101010109.889.889.889.888.9219.09.09.08.08.08.08.08.08.07.08.07.06.07.07.07.07.06.07.06.06.07.0
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:DefinedBenefitPlanInterestCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value9.2069.2069.3949.3959.3949.3959.8269.8279.8269.8278.8468.8458.8458.8468.5698.5698.5688.5698.2818.2818.2828.2817.7558.07.08.07.07.07.07.07.06.07.06.06.06.06.06.06.06.05.06.06.05.05.0
Percentage of DefinedBenefitPlanInterestCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1414111111118.0468.0468.0458.0469.0849.0849.0849.0848.8738.5728.5718.5727.6537.6547.6537.6539.96810.010.010.06.07.06.07.010.09.010.09.07.08.08.07.05.05.05.05.04.04.03.0
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DefinedBenefitPlanServiceCost


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1313101010108.4648.4638.4648.4639.5139.5139.5139.5137.7767.7777.7767.7777.0517.057.057.057.4338.07.08.06.06.05.06.07.07.06.07.05.05.06.05.04.04.05.04.04.03.04.0
Percentage of DefinedBenefitPlanServiceCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther us-gaap:StatementClassOfStock

us-gaap:DilutiveSecuritiesEffectOnBasicEarningsPerShareOther

us-gaap:CommonClassA


Dilutive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value647000.0602000.0515000.0730000.0671000.0486000.0488000.0771000.0718000.0617000.0510000.0659000.0653000.0538000.0263000.0479000.0479000.0392000.0375000.0470000.0502000.0375000.0246000.0406000.0460000.0318000.0
Percentage of DilutiveSecuritiesEffectOnBasicEarningsPerShareOther100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementClassOfStock

us-gaap:DividendsCommonStockCash

us-gaap:CommonClassA


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value47474444444141413838383431313232292930302727281222527262426
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value0.3940.3950.3680.3680.3680.3430.3440.3430.320.3210.320.0580.01.00.00.01.00.00.00.01.00.00.01.01.00.00.01.00.0
Percentage of DividendsCommonStockCash0.80.80.80.80.80.80.80.80.80.80.80.20.03.20.00.03.40.00.00.03.70.00.00.84.00.00.04.20.0

us-gaap:DividendsCommonStockCash us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value4747444444414141383838
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB, us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.3940.3950.3680.3680.3680.3430.3440.3430.320.3210.32
Percentage of DividendsCommonStockCash0.80.80.80.80.80.80.80.80.80.80.8

us-gaap:EquityMethodInvestmentDividendsOrDistributions

us-gaap:EquityMethodInvestmentDividendsOrDistributions


Equity
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.2190.2780.2540.3350.3040.0671.2251.1652.9712.6110.4262.1351.6540.6960.643101.8044.2911.127-100.8884142323631392551463346704029257326353234403018
Percentage of EquityMethodInvestmentDividendsOrDistributions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


Equity
Period End2021-06-302020-06-30
Value2371000.06170000.0
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss us-gaap:FinancialInstrument

us-gaap:EquitySecurities


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-679000.04531000.05777000.06170000.0-11422000.0212000.0624000.063000.0585000.0-630000.0-1000.0-68000.0-120000.0
Percentage of EquitySecuritiesFvNiGainLoss0.00.00.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss

us-gaap:EquitySecuritiesFvNiRealizedGainLoss


Equity
Period End2021-06-302020-06-30
Value128000.01357000.0
Percentage of EquitySecuritiesFvNiRealizedGainLoss100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGainLoss us-gaap:FinancialInstrument

us-gaap:EquitySecurities


Equity
Period End2021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-289000.01796000.01357000.0-37000.0313000.047000.0000-52000.00
Percentage of EquitySecuritiesFvNiRealizedGainLoss0.00.0100.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302020-06-30
Value2243000.04813000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss us-gaap:FinancialInstrument

us-gaap:EquitySecurities


Equity
Period End2021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-390000.03981000.04813000.0-11385000.0-101000.0577000.063000.0585000.0-630000.051000.0-68000.0-86000.0
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss0.00.0100.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value-0.086-0.092-0.1420.151-0.061-0.001-0.0880.0240.029-0.050.1060.0220.030.019-2.9983.0-1.01.0-2.05.07.07.04.06.05.03.04.01.05.03.05.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:CommercialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.102-0.095-0.094-0.047-0.034-0.008-0.016-0.0060.015-0.002
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1118.6103.366.2-31.155.7800.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CorporateDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0140.006-0.0110.004-0.0020.0070.0030.016-0.020.0110.0020.0030.01-0.009-0.0880.0240.029
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1-16.3-6.57.72.63.3-700.00.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:NonredeemablePreferredStock, us-gaap:NonredeemablePreferredStock


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.0050.0-0.0180.194-0.025
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1-5.8-0.012.7128.541.0

us-gaap:FairValueInputsLevel3, us-gaap:ResidentialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value-0.003-0.003-0.0190.00.00.00.0040.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings13.53.313.40.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-0.091-0.092-0.124-0.043-0.036-0.001-0.0130.01-0.0010.0090.0020.0030.01-0.009-0.0880.0240.029-0.050.1060.0220.030.0190.0020.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1105.8100.087.3-28.559.0100.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0-0.10.0-0.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value24000.0-394000.0592000.0499000.01147000.0-1526000.067000.0-60000.0-23000.0-25000.0-12000.045000.057000.015000.06934000.0-2000000.0-6000000.01000000.00-1000000.00-1000000.01000000.0-3000000.0-3000000.05000000.01000000.0-2000000.0-1000000.02000000.0-1000000.02000000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:CollateralizedDebtObligations, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value00-9000.012000.01000.003000.0007000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss0.00.0-1.81.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CommercialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-10000.0-437000.0442000.0351000.0268000.0-148000.0-15000.02000.0-8000.00
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss-41.7110.974.770.323.49.70.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CorporateDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value37000.042000.0198000.0157000.0867000.0-1378000.0-53000.0-92000.023000.0268000.0-335000.071000.0-53000.05000.067000.0-60000.0-23000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss154.2-10.733.431.575.690.30.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:OtherDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312018-09-30
Value-4000.02000.00
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss-16.7-0.50.0

us-gaap:FairValueInputsLevel3, us-gaap:ResidentialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value1000.0-1000.0-48000.000015000.00
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss4.20.3-8.10.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value24000.0-394000.0592000.0499000.01147000.0-1526000.0-67000.0-90000.030000.0268000.0-332000.071000.0-53000.012000.067000.0-60000.0-23000.0-25000.0-12000.045000.057000.015000.0-5000.0-61000.000
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0-0.13.0-0.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value5.8653.5755.4216.6388.7412.032.6340.5392.111.8712.0486.2177.3317.061-64.23945253.021280.01.00.04.01.04.01.00.01.00.00.01.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.00.0100.00.00.0100.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:CollateralizedDebtObligations, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value0.750.00.00.2470.02.30.9050.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases12.80.00.02.80.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CommercialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.5792.2653.02.0776.8910.3120.00.00.00.478
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases9.963.455.331.378.815.40.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CorporateDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.4760.7822.4212.2580.7831.7180.7370.5490.00.7340.9641.5393.0470.00.4340.5392.11
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases25.221.944.734.09.084.60.00.00.00.00.00.00.00.016.5100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:NonredeemablePreferredStock, us-gaap:NonredeemablePreferredStock


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.00.00.02.0160.82
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases17.10.00.030.49.4

us-gaap:FairValueInputsLevel3, us-gaap:OtherDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312018-09-30
Value2.060.5280.905
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases35.114.80.0

us-gaap:FairValueInputsLevel3, us-gaap:ResidentialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value0.00.00.00.2870.00.00.00.921
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.00.00.04.30.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4.8653.5755.4214.6227.9212.030.7372.8490.02.1330.9642.4443.0470.02.6340.5392.111.8712.0486.2177.3317.0613.4454.5460.660.11
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases82.9100.0100.069.690.6100.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0-5.410.12.63.7

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1.5210.6364.2510.1980.3160.5131.0391.241.2831.8490.930.3180.5510.109-34.010.00.024454.04.010.011241313155.04.04.00.00.00.05.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:CommercialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.9610.0052.0470.00.2010.0860.00.0031.0650.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales63.20.848.20.063.616.80.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CorporateDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.3030.370.6650.1980.1150.4270.6360.5075.8410.4310.4731.4160.4720.4931.0391.241.283
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales19.958.215.6100.036.483.20.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:OtherDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312018-09-30
Value0.0330.0090.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales2.21.40.0

us-gaap:FairValueInputsLevel3, us-gaap:ResidentialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value0.2240.2521.5390.00.00.00.0260.006
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales14.739.636.20.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.5210.6364.2510.1980.3160.5130.6360.516.9320.4370.4731.4160.4720.4931.0391.241.2831.8490.930.3180.5510.1090.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0-0.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value7.0013.5222.696415.476112.7522.6333.6262.0624.6281.66
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:CommercialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value2.6241.230.914294.3344.5571.1782.8462.5510.706
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel337.534.933.970.979.139.80.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CorporateDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.3471.2020.8451.6441.1426.8952.2981.852.5814.8137.7152.7355.372.4122.7522.6333.626
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel319.234.131.33.920.960.20.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:NonredeemablePreferredStock, us-gaap:NonredeemablePreferredStock


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.01.090.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel30.030.90.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:ResidentialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value3.030.00.937100.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel343.30.034.825.10.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value7.0012.4322.696415.476113.4764.6965.1325.5197.7152.7355.372.4122.7522.6333.6262.1852.0624.6281.66
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3100.069.1100.0100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value4.5228.414492.001103.6482.1623.2764.9679.2326.33814
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:CollateralizedDebtObligations, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302018-12-312018-09-302018-06-302018-03-31
Value0.00.00.250.02.3010.00.9080.00.02.207
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.012.50.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CommercialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.2386.179320.00.5750.5652.5330.6830.1240.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel327.473.467.00.05.515.50.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CorporateDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.9532.0273.9931.7519.8153.0831.0831.1311.8936.4493.5665.7823.0913.4852.1623.2764.967
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel343.224.18.187.594.584.50.00.00.00.00.00.00.00.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:NonredeemablePreferredStock, us-gaap:NonredeemablePreferredStock


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value1.0950.02.9870.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel324.20.06.10.00.0

us-gaap:FairValueInputsLevel3, us-gaap:ResidentialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302019-12-312019-09-302019-06-302019-03-31
Value0.2360.2089.240.00.00.00.9080.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel35.22.518.80.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value3.4278.414462.001103.6485.9171.8142.9256.4494.4745.7823.0915.6922.1623.2764.9671.6819.2326.33814
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel375.8100.093.9100.0100.0100.00.00.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:GainLossOnSaleOfOtherInvestments us-gaap:FinancialInstrument

us-gaap:GainLossOnSaleOfOtherInvestments

us-gaap:MiscellaneousInvestments


Gain
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0-2000.01000.01000.01000.00000
Percentage of GainLossOnSaleOfOtherInvestments0.0100.0100.0100.0100.00.00.00.00.0

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncomeLossFromEquityMethodInvestments


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6.1519.0463.615-2.329-3.705-1.8863.2890.404-1.147-1.1830.772-0.219-0.1920.9021.5370.1490.2137.304-1.7232.114-0.67-126.0174372282.03427504937393632413721-1.04038727028273.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements us-gaap:StatementClassOfStock

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:CommonClassA


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value13281.026298.0657.020599.014373.034761.02516.035319.024906.022899.01456.027697.023344.021920.0-5709.027127.017743.0119240.0-7375.0121520.0103200.0234060.0-98575.0312220.0272650.0344880.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7.547.6868.6188.6038.8018.2898.7678.6137.937.4317.266.8966.176.6326.4575.9655.6615.2264.8854.8574.5154.6714.633
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating us-gaap:InvestmentType

erie:CashEquivalentsAndOther


Interest
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.9350.9771.1151.974
Percentage of InterestAndDividendIncomeOperating0.00.014.522.9

us-gaap:CashAndCashEquivalents


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.0091.1151.9742.5212.92.662.4652.111.4841.0261.008-0.3661.9360.3950.5210.380.3660.3210.3240.3120.2870.2810.294
Percentage of InterestAndDividendIncomeOperating13.414.522.929.333.032.128.124.518.713.813.9-5.331.46.08.16.46.56.16.66.46.46.06.3

us-gaap:DebtSecurities


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value5.796.1975.825.3535.675.7885.3985.4495.4886.1616.3626.2436.2636.117.2294.2346.225.9045.5465.2454.8584.5264.2184.014.154.079
Percentage of InterestAndDividendIncomeOperating0.00.00.071.073.867.262.761.966.270.373.978.784.384.2104.868.693.891.493.092.793.092.786.888.888.888.0

us-gaap:EquitySecurities


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1.1161.2021.2121.1780.9010.8560.6840.4520.1410.1410.1410.2030.1420.1420.0330.00.0170.0320.0390.050.0470.0350.3270.2180.240.26
Percentage of InterestAndDividendIncomeOperating0.00.00.015.611.79.98.05.11.71.61.62.61.92.00.50.00.30.50.70.90.90.76.74.85.15.6

us-gaap:InvestmentIncomeInvestmentExpense

us-gaap:InvestmentIncomeInvestmentExpense


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.3420.3250.3890.510.3130.2490.4030.1490.2590.25-0.0130.2710.3270.440.4720.20.3960.4790.3020.330.3350.2230.3880.1690.2360.092
Percentage of InvestmentIncomeInvestmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NetIncomeLossAttributableToParentDiluted us-gaap:StatementClassOfStock

us-gaap:NetIncomeLossAttributableToParentDiluted

us-gaap:CommonClassA


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value7973628981595994877562807965325858474557614530495638
Percentage of NetIncomeLossAttributableToParentDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Net
Period End2020-12-312020-09-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.5140.730.4860.4880.770.7180.6170.510.6580.6530.5380.2630.4790.4790.3920.3750.4690.5020.3750.2480.4050.4580.318
Percentage of NetIncomeLossAttributableToParentDiluted0.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.80.8

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1

us-gaap:NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1


Noncash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-4.0741713-0.3180.0470.767-1.486-6.694140.08.453
Percentage of NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value3.23.23.33.43.33.53.63.6
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.387-11.0789.3427.77740-33.4251.6842.953.2656.934-4.389-0.623-0.697-6.87-4.308-0.2561.6812.339-10.4660.5454.6565.331
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.387-11.0789.3427.77740-33.4251.6842.953.2656.934-4.389-0.623-0.697-6.87-4.308-0.2561.6812.339-10.4660.5454.6565.331
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2.676-8.7527.386.14337-32.2361.3312.332.5795.478-3.467-0.492-0.551-5.427-2.636-0.1671.0921.521-6.8030.3553.0263.465-1.276-0.521-2.5830.1
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2.676-8.7527.386.14337-32.2361.3312.332.5795.478-3.467-0.492-0.551-5.427-2.636-0.1671.0921.521-6.8030.3553.0263.465-1.276-0.521-2.5830.1
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2.676-8.7527.386.14337-32.2361.3312.332.5795.478-3.467-0.492-0.551-5.427-2.636-0.1671.0921.521-6.8030.3553.0263.465
Percentage of OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value-4.384-4.383-15.2-3.366-3.367-3.3672.527-1.559-1.558-1.559450.00.00.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-4.384-4.383-15.2-3.366-3.367-3.3672.527-1.559-1.558-1.559-45.2050.00.00.0-10.2590.00.00.0-37.7850.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-100.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent


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
Value-3.463-3.463-12.008-2.659-2.66-2.661.996-1.231-1.231-1.232-35.7120.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-3.463-3.463-12.008-2.659-2.66-2.661.996-1.231-1.231-1.232350.00.00.00.0-24.560.00.00.0250.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-100.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value-3.463-3.463-12.008-2.659-2.66-2.661.996-1.231-1.231-1.232-35.7120.00.00.0-8.1050.00.00.0-24.560.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value0.9210.923.1920.7070.7070.707-0.5310.3280.3270.3279.4930.00.00.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value0.9210.923.1920.7070.7070.707-0.5310.3280.3270.327-9.4930.00.00.0-2.1540.00.00.0-13.2250.00.00.0
Percentage of OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0-100.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value357000.0357000.0336000.0335000.0336000.0336000.0348000.0349000.0348000.0349000.0-1353000.000000
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value282000.0282000.0265000.0265000.0266000.0265000.0275000.0275000.0275000.0276000.0-1069000.00000-452000.0000-434000.0000
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.00.00.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value-75000.0-75000.0-71000.0-70000.0-70000.0-71000.0-73000.0-74000.0-73000.0-73000.0-284000.000000
Percentage of OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value711000.0-2326000.01962000.01634000.02575000.0-1189000.0353000.0620000.0686000.01456000.0-922000.0-131000.0-146000.0-1443000.0-1672000.0-89000.0589000.0818000.0-3663000.0190000.01630000.01866000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value711000.0-2326000.01962000.01634000.02575000.0-1189000.0353000.0620000.0686000.01456000.0-922000.0-131000.0-146000.0-1443000.0-1672000.0-89000.0589000.0818000.0-3663000.0190000.01630000.01866000.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value7.771-6.695241143-30.058-0.8434.5094.8238.49340-0.623-0.697-6.87-14.567-0.2561.6812.339-48.2510.5454.6565.331
Percentage of OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6.139-5.289198.80240-29.576-0.6653.5613.816.7132-0.492-0.551-5.427-31.3630.3553.0263.46523-0.521-2.5830.1
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value6.139-5.289198.80240-29.576-0.6653.5613.816.7132-0.492-0.551-5.427-10.741-0.1671.0921.521-31.3630.3553.0263.465
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value397000.01483000.0228000.0137000.0355000.0615000.0390000.01072000.01239000.01918000.0-885000.0-1000.0-66000.0-345000.0-207000.0899000.0126000.0422000.0643000.0576000.0229000.0-1483000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.3131.1720.180.1090.280.4860.3080.8470.9791.515-0.699-0.001-0.052-0.273-0.1350.5850.0820.2740.4180.3740.149-0.9640.401-0.3140.389-0.156
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.0840.3110.0480.0280.0750.1290.0820.2250.260.403-0.1860.0-0.014-0.072-0.0720.3140.0440.148-0.249-0.2020.080.5190.1280.1690.2090.084
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1000.0-87000.0-41000.0122000.017000.02883000.02000.031000.084000.078000.0935000.00646000.000061000.0121000.071000.000345000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.00.00.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value1000.0-69000.0-32000.096000.013000.02278000.02000.024000.066000.062000.0739000.00510000.000039000.079000.046000.000224000.0600000.0312000.023000.078000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0-18000.0-9000.026000.04000.0605000.007000.018000.016000.0196000.00136000.000022000.042000.025000.000121000.0-767000.0168000.012000.042000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesTax0.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.00.0100.00.00.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value-4.027-4.026-3.032-3.031-3.031-3.031-1.21-1.21-1.21-1.21120.00.00.00.00.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-3181000.0-3181000.0-2396000.0-2394000.0-2394000.0-2395000.0-956000.0-956000.0-956000.0-956000.09836000.000005047000.00009022000.0000
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0100.00.00.00.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-03-312016-03-31
Value846000.0845000.0636000.0637000.0637000.0636000.0254000.0254000.0254000.0254000.02615000.000000
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1 us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossTaxPortionAttributableToParent1

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1.632-1.4065.1542.3413.282-0.482-0.1780.9481.0131.7838.571-0.131-0.146-1.443-3.826-0.0890.5890.818-16.8880.191.631.866
Percentage of OtherComprehensiveIncomeLossTaxPortionAttributableToParent1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3.783-9.5089.6117.79240-35.6932.0723.9914.428.774-6.209-0.624-1.409-7.13-5.6770.6431.7462.64-9.8941.1214.8853.503
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value2.988-7.5117.5926.15637-34.0281.6373.1533.4926.931-4.905-0.493-1.113-5.633-3.690.4181.1351.716-6.4310.7293.1752.277-1.475-1.147-2.217-0.134
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.795-1.9972.0191.6362.646-1.6650.4350.8380.9281.843-1.304-0.131-0.296-1.497-1.9870.2250.6110.924-3.4630.392-1.71-1.2264.562-0.6181.1940.072
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForCommissions

us-gaap:PaymentsForCommissions


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
Value24521923224723221522523522920421422522119220221120318219120119117292197187249173179172225160165159197147150140180133137135178118124121169
Percentage of PaymentsForCommissions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForOtherOperatingActivities

us-gaap:PaymentsForOtherOperatingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value6956596064685661576063335259315452614242395246334861
Percentage of PaymentsForOtherOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value93755713960137103237394220198793777594725882473735589501722917689551646483565418319323407752345485405525
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireLimitedPartnershipInterests

us-gaap:PaymentsToAcquireLimitedPartnershipInterests


Payments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.0010.0060.0130.0280.0110.00.0090.0260.0020.1840.0310.080.0050.2140.1110.1290.0820.2640.103-100.0723838253836192722142923362219231013940296046
Percentage of PaymentsToAcquireLimitedPartnershipInterests100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireLoansReceivable

us-gaap:PaymentsToAcquireLoansReceivable


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.9330.9976.3251.460.511.8031.1539.5110.7146.2330.827175.1319
Percentage of PaymentsToAcquireLoansReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireMarketableSecurities

us-gaap:PaymentsToAcquireMarketableSecurities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9.589181222261820460.00.00.03.0520.01.035
Percentage of PaymentsToAcquireMarketableSecurities100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.00.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-312018-09-30
Value256000.0349000.0374000.0165000.0590000.013000.0780000.0128000.000
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.00.00.0

us-gaap:PaymentsToEmployees

us-gaap:PaymentsToEmployees


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value4568414650494836505045344754433248474029444540363542
Percentage of PaymentsToEmployees100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromCollectionOfLoansReceivable

us-gaap:ProceedsFromCollectionOfLoansReceivable


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1446000.02138000.01837000.02058000.01634000.01943000.02117000.01813000.01678000.02313000.01940000.01390000.01670000.01436000.0
Percentage of ProceedsFromCollectionOfLoansReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromFeesReceived

us-gaap:ProceedsFromFeesReceived


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
Value5.9026.0796.3796.316.4466.6626.8737.1556.9076.6927.387.0727.087.1457.3687.2787.2457.2587.4447.2677.2197.276.9978.07.08.08.08.07.08.08.08.08.07.08.08.08.07.08.08.09.08.08.09.09.08.0
Percentage of ProceedsFromFeesReceived100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromInterestAndDividendsReceived

us-gaap:ProceedsFromInterestAndDividendsReceived


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value7.8498.8539.3649.058.6627.6879.112109.3468.3288.9517.6888.5717.4697.5537.1536.7226.7396.182-371.00113513612612212711412111311511610612511312311011811612797120108
Percentage of ProceedsFromInterestAndDividendsReceived100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromLimitedPartnershipInvestments

us-gaap:ProceedsFromLimitedPartnershipInvestments


Proceeds
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.0120.2490.3280.1221.150.0392.4110.3410.3641.7720.912.7823.6420.9483.3963.7091.1589.4541.792-149.2655842769730294173393353602931818125312610225
Percentage of ProceedsFromLimitedPartnershipInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities

us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5445263423352020107154352941284846564349273633-629.295273260209169272169244254264352265292310350217228248227247215285194315
Percentage of ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfDebt

us-gaap:ProceedsFromRepaymentsOfDebt


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-509000.0-502000.0-491000.0-498000.0-481000.0-471000.0-502000.0-460000.0
Percentage of ProceedsFromRepaymentsOfDebt100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments

us-gaap:ProceedsFromSaleAndMaturityOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-06-302020-03-31
Value50000.0819000.0249000.0328000.0
Percentage of ProceedsFromSaleAndMaturityOfOtherInvestments100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2731122024443122428114910949185723435427115511921215913338620812234619717516310612712127776127126233
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


Provision
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value127000.000170000.000
Percentage of ProvisionForLoanLossesExpensed100.00.00.0100.00.00.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-03-31
Value0.9090.0680.8360.6672.1071.3331.8050.5420.621320.00.0
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0

dei:EntityCommonStockSharesOutstanding us-gaap:StatementClassOfStock

dei:EntityCommonStockSharesOutstanding

us-gaap:CommonClassA


Entity
Period End2020-07-242020-05-012020-02-212019-10-112019-07-122019-04-122019-02-152018-10-122018-07-132018-04-132018-02-162017-10-132017-07-142017-04-142017-02-172016-10-142016-07-152016-04-152016-02-192015-10-162015-07-172015-04-172015-02-202014-10-172014-07-182014-04-182014-02-142013-10-182013-07-192013-04-192013-02-152012-10-172012-07-192012-04-192012-02-172011-10-202011-07-222011-04-292011-02-18
Value464646464646464646464646464646464646464646464646464646464646464747474748484949
Percentage of EntityCommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonClassB


Entity
Period End2020-07-242020-05-012020-02-212019-10-112019-07-122019-04-122019-02-152018-10-122018-07-132018-04-132018-02-162017-10-132017-07-142017-04-142017-02-172016-10-142016-07-152016-04-152016-02-192015-10-162015-07-172015-04-172015-02-202014-10-172014-07-182014-04-182014-02-142013-10-182013-07-192013-04-192013-02-152012-10-172012-07-192012-04-192012-02-172011-10-202011-07-222011-04-292011-02-18
Value0.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025420.0025440.0025440.0025440.0025450.0025460.0025460.0025460.002546
Percentage of EntityCommonStockSharesOutstanding0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

erie:AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent

erie:AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value32242630323738
Percentage of AccruedBonusesAndDeferredCompensationLiabilityCurrentAndNoncurrent100.0100.0100.0100.0100.0100.0100.0

erie:AccumulatedDepreciationDepletionandAmortizationPropertyPlantandEquipmentandFiniteLivedIntangibleAssets

erie:AccumulatedDepreciationDepletionandAmortizationPropertyPlantandEquipmentandFiniteLivedIntangibleAssets


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value15913812511710388
Percentage of AccumulatedDepreciationDepletionandAmortizationPropertyPlantandEquipmentandFiniteLivedIntangibleAssets100.0100.0100.0100.0100.0100.0

erie:AgentBonusesPayableCurrent

erie:AgentBonusesPayableCurrent


Agent
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value623011085602996735126103795630122936232114845831106
Percentage of AgentBonusesPayableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:AmountOfLoanParticipationProgram dei:LegalEntity, us-gaap:FinancialInstrument

erie:AmountOfLoanParticipationProgram

erie:ThirdPartyBank, us-gaap:LoanPurchaseCommitments


Amount
Period End2021-06-302021-03-312020-12-312020-09-30
Value2215143.1
Percentage of AmountOfLoanParticipationProgram100.0100.0100.0100.0

erie:CommonStockIssuedDirectorStockTrust

erie:CommonStockIssuedDirectorStockTrust


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value21171716161312121212111110119.5789.3069.024109.7569.4819.2119.0189.0180.0
Percentage of CommonStockIssuedDirectorStockTrust100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

erie:DeferredCompensationEquityRabbiTrust us-gaap:PlanName

erie:DeferredCompensationEquityRabbiTrust

erie:IncentiveCompensationDeferralPlan


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3972000.0774000.01401000.000
Percentage of DeferredCompensationEquityRabbiTrust100.0100.0100.00.00.0

erie:StockCompensationPlanOutsideDirectors


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1493000.01434000.01165000.01177000.0738000.0
Percentage of DeferredCompensationEquityRabbiTrust37.6185.383.20.00.0

erie:DeferredTaxAssetsNetAllowanceforPremiumCancellations

erie:DeferredTaxAssetsNetAllowanceforPremiumCancellations


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3515000.03421000.03292000.03024000.04795000.04375000.03850000.0
Percentage of DeferredTaxAssetsNetAllowanceforPremiumCancellations100.0100.0100.0100.0100.0100.0100.0

erie:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits

erie:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value29252022654855
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensionsAndPostretirementBenefits100.0100.0100.0100.0100.0100.0100.0

erie:DeferredTaxLiabilitiesAdvanceCommissions

erie:DeferredTaxLiabilitiesAdvanceCommissions


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value884000.0545000.01270000.00
Percentage of DeferredTaxLiabilitiesAdvanceCommissions100.0100.0100.00.0

erie:DeferredTaxLiabilitiesUnrealizedGainsOnInvestmentsIncludingEquityMethodInvestments

erie:DeferredTaxLiabilitiesUnrealizedGainsOnInvestmentsIncludingEquityMethodInvestments


Deferred
Period End2020-12-312019-12-31
Value7540000.04181000.0
Percentage of DeferredTaxLiabilitiesUnrealizedGainsOnInvestmentsIncludingEquityMethodInvestments100.0100.0

erie:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPostRetirementDiscountRate us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

erie:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPostRetirementDiscountRate

us-gaap:UnfundedPlan, us-gaap:NonqualifiedPlan, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2.860.03090.03970.03230.03740.04070.0367
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPostRetirementDiscountRate100.0100.0100.0100.0100.0100.0100.0

erie:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPreRetirementDiscountRate us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

erie:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPreRetirementDiscountRate

us-gaap:UnfundedPlan, us-gaap:NonqualifiedPlan, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2.860.03590.04470.03730.04240.04570.0417
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationPreRetirementDiscountRate100.0100.0100.0100.0100.0100.0100.0

erie:DefinedBenefitPlanTargetNormalCostThreshold us-gaap:Range, us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

erie:DefinedBenefitPlanTargetNormalCostThreshold

srt:Minimum, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-31
Value80
Percentage of DefinedBenefitPlanTargetNormalCostThreshold100.0

erie:EquitySecuritiesFVNINoncurrent

erie:EquitySecuritiesFVNINoncurrent


Equity
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302018-12-31
Value9294947358645511
Percentage of EquitySecuritiesFVNINoncurrent100.0100.0100.0100.0100.0100.0100.0100.0

erie:EquitySecuritiesFVNITotal us-gaap:EquitySecuritiesByIndustry, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

erie:EquitySecuritiesFVNITotal

erie:CommunicationsSector, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-03-31
Value1.1233.1242.6992.6232.215
Percentage of EquitySecuritiesFVNITotal100.0100.0100.0100.0100.0

erie:CommunicationsSector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-03-31
Value1.0380.00.00.00.0
Percentage of EquitySecuritiesFVNITotal92.40.00.00.00.0

erie:ConsumerSector, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.6071.110.5760.4190.8920.0
Percentage of EquitySecuritiesFVNITotal54.135.521.316.00.00.0

erie:ConsumerSector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value1.6882.512.4920.9850.9120.508
Percentage of EquitySecuritiesFVNITotal150.380.392.337.60.00.0

erie:ConsumerSector, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value0.00.00.00.8650.7950.0
Percentage of EquitySecuritiesFVNITotal0.00.00.033.00.00.0

erie:EnergySector, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, erie:NonredeemablePreferredAndCommonStock


Equity
Period End2020-12-31
Value0.676
Percentage of EquitySecuritiesFVNITotal25.0

erie:EnergySector, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, erie:NonredeemablePreferredandCommonStock


Equity
Period End2021-06-302021-03-312020-12-312019-12-31
Value0.9570.8630.6760.0
Percentage of EquitySecuritiesFVNITotal85.227.625.00.0

erie:EnergySector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, erie:NonredeemablePreferredAndCommonStock


Equity
Period End2020-12-31
Value1.53
Percentage of EquitySecuritiesFVNITotal56.7

erie:EnergySector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, erie:NonredeemablePreferredandCommonStock


Equity
Period End2021-06-302021-03-312020-12-312019-12-31
Value1.9951.6451.531.881
Percentage of EquitySecuritiesFVNITotal177.652.756.70.0

erie:EnergySector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2020-09-302020-06-302020-03-312019-12-31
Value1.0671.0351.0051.881
Percentage of EquitySecuritiesFVNITotal40.70.045.40.0

erie:EnergySector, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, erie:NonredeemablePreferredAndCommonStock


Equity
Period End2020-12-31
Value0.0
Percentage of EquitySecuritiesFVNITotal0.0

erie:IndustrialSector, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value0.9150.8940.80.7730.0
Percentage of EquitySecuritiesFVNITotal81.528.629.629.50.0

erie:IndustrialSector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value0.00.00.00.00.98
Percentage of EquitySecuritiesFVNITotal0.00.00.00.00.0

erie:UtilitiesSector, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value3.5943.4983.9574.6394.2593.4113.19
Percentage of EquitySecuritiesFVNITotal320.0112.0146.6176.90.0154.00.0

erie:UtilitiesSector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value6.8765.7674.7854.6113.4533.0583.628
Percentage of EquitySecuritiesFVNITotal612.3184.6177.3175.80.0138.10.0

us-gaap:FinancialServicesSector, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value202224232015141.809
Percentage of EquitySecuritiesFVNITotal1836.9713.0925.6906.20.0706.00.00.0

us-gaap:FinancialServicesSector, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5350515239313810
Percentage of EquitySecuritiesFVNITotal4771.51605.51911.62003.20.01420.40.00.0

us-gaap:FinancialServicesSector, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1.01.090.02.140.00.00.00.0
Percentage of EquitySecuritiesFVNITotal89.034.90.081.60.00.00.00.0

erie:EquitySecuritiesFVNITotal us-gaap:EquitySecuritiesByIndustry, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

erie:CommunicationsSector, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-03-31
Value2.1613.1242.6992.6232.215
Percentage of EquitySecuritiesFVNITotal192.4100.0100.0100.0100.0

erie:ConsumerSector, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value2.2953.623.0682.2692.5990.508
Percentage of EquitySecuritiesFVNITotal204.4115.9113.786.50.00.0

erie:EnergySector, us-gaap:FairValueMeasurementsRecurring, erie:NonredeemablePreferredAndCommonStock


Equity
Period End2020-12-31
Value2.206
Percentage of EquitySecuritiesFVNITotal81.7

erie:EnergySector, us-gaap:FairValueMeasurementsRecurring, erie:NonredeemablePreferredandCommonStock


Equity
Period End2021-06-302021-03-312020-12-312019-12-31
Value2.9522.5082.2061.881
Percentage of EquitySecuritiesFVNITotal262.980.381.70.0

erie:EnergySector, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2020-09-302020-06-302020-03-312019-12-31
Value1.0671.0351.0051.881
Percentage of EquitySecuritiesFVNITotal40.70.045.40.0

erie:IndustrialSector, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value0.9150.8940.80.7730.98
Percentage of EquitySecuritiesFVNITotal81.528.629.629.50.0

erie:UtilitiesSector, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value109.2658.7429.257.7126.4696.818
Percentage of EquitySecuritiesFVNITotal932.3296.6323.9352.60.0292.10.0

us-gaap:FinancialServicesSector, us-gaap:FairValueMeasurementsRecurring, us-gaap:NonredeemablePreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value7573767860475311
Percentage of EquitySecuritiesFVNITotal6697.42353.42837.22991.00.02126.40.00.0

erie:EquitySecuritiesFVNITotal us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value273133322922211.809
Percentage of EquitySecuritiesFVNITotal2477.61016.71248.21228.50.01000.50.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value6560605944354510
Percentage of EquitySecuritiesFVNITotal5804.21923.12237.92257.20.01618.70.00.0

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1.01.090.03.0050.7950.00.00.0
Percentage of EquitySecuritiesFVNITotal89.034.90.0114.60.00.00.00.0

erie:EquitySecuritiesFVNITotal us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument

us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value9492949475586711
Percentage of EquitySecuritiesFVNITotal8370.92974.73486.13600.30.02619.10.00.0

erie:FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentGross

erie:FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentGross


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value424360255200172147
Percentage of FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0

erie:FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentNet

erie:FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value280282265254246238221194173144130121948883757168695858585962
Percentage of FiniteLivedIntangibleAssetsAndPropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

erie:FiniteLivedIntangibleAssetsNotYetSubjectToAmortization erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType

erie:FiniteLivedIntangibleAssetsNotYetSubjectToAmortization

us-gaap:SoftwareDevelopment


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value472210211717
Percentage of FiniteLivedIntangibleAssetsNotYetSubjectToAmortization100.0100.0100.0100.0100.0100.0

erie:LongTermDebtMaturityAfterYearFour us-gaap:LongtermDebtType

erie:LongTermDebtMaturityAfterYearFour

us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-09-30
Value848487
Percentage of LongTermDebtMaturityAfterYearFour100.0100.0100.0

us-gaap:AccountsReceivableRelatedPartiesCurrent

us-gaap:AccountsReceivableRelatedPartiesCurrent


Accounts
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value494468497483456449463445415418428411392378400387352348335
Percentage of AccountsReceivableRelatedPartiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedInvestmentIncomeReceivable


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value6121000.05860000.06146000.05973000.05317000.05657000.05433000.05267000.04365000.04220000.05263000.06504000.06647000.06425000.06853000.06435000.06874000.06504000.06337000.06261000.05816000.05832000.05491000.05538000.0
Percentage of AccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedSalesCommissionCurrent

us-gaap:AccruedSalesCommissionCurrent


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value284272262275282270262272267253241257253240228236232219210218217202195189
Percentage of AccruedSalesCommissionCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AociBeforeTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AociBeforeTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value-119.533-123.917-128.3-143.5-146.866-150.233-153.6-151.073-152.632-154.19-155.749-200.954-200.954-200.954-200.954-190.695-190.695-190.695-190.695-152.91-152.91-152.91-152.91-191.552-100.128
Percentage of AociBeforeTaxAttributableToParent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value2118292012-27.7615.6643.981.03-2.235-9.169-4.78-4.157-3.463.417.7187.9746.2933.95414139.2193.888109.206
Percentage of AociBeforeTaxAttributableToParent-18.1-14.8-22.9-14.0-8.418.5-3.7-2.6-0.71.45.92.42.11.7-1.7-4.0-4.2-3.3-2.1-9.4-9.1-6.0-2.5-5.5-9.2

us-gaap:AccumulatedOtherComprehensiveIncome


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value-97.84-105.611-98.916-123.458-134.601-177.994-147.936-147.093-151.602-156.425-164.918-205.734-205.111-204.414-197.544-182.977-182.721-184.402-186.741-138.49-139.035-143.691-149.022-181.079-90.922
Percentage of AociBeforeTaxAttributableToParent81.985.277.186.091.6118.596.397.499.3101.4105.9102.4102.1101.798.396.095.896.797.990.690.994.097.594.590.8

us-gaap:AociTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:AociTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value-25103000.0-26024000.0-26944000.0-30136000.0-30843000.0-31550000.0-32257000.0-31726000.0-32054000.0-32381000.0-32708000.0-42201000.0-42201000.0-42201000.0-42201000.0-66744000.0-66744000.0-66744000.0-66744000.0-53519000.0-53519000.0-53519000.0-53519000.0-67044000.0-35045000.0
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:AccumulatedNetUnrealizedInvestmentGainLoss


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value4556000.03845000.06171000.04209000.02575000.001189000.0836000.0216000.0-470000.0-1926000.0-1004000.0-873000.0-727000.0716000.02702000.02791000.02202000.01384000.05047000.04857000.03227000.01361000.03666000.03222000.0
Percentage of AociTaxAttributableToParent-18.1-14.8-22.9-14.0-8.3-0.0-3.7-2.6-0.71.55.92.42.11.7-1.7-4.0-4.2-3.3-2.1-9.4-9.1-6.0-2.5-5.5-9.2

us-gaap:AccumulatedOtherComprehensiveIncome


Aoci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value-20547000.0-22179000.0-20773000.0-25927000.0-28268000.0-31550000.0-31068000.0-30890000.0-31838000.0-32851000.0-34634000.0-43205000.0-43074000.0-42928000.0-41485000.0-64042000.0-63953000.0-64542000.0-65360000.0-48472000.0-48662000.0-50292000.0-52158000.0-63378000.0-31823000.0
Percentage of AociTaxAttributableToParent81.985.277.186.091.7100.096.397.499.3101.5105.9102.4102.1101.798.396.095.896.797.990.690.994.097.594.590.8

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value2321317.9392.3587.707
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.5740.6340.6570.3730.2810.040.0440.020.0160.0170.030.080.1030.237
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.42.92.10.00.00.00.60.00.00.01.30.00.03.1

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3.3782.4135.094.423.390.9760.4791.2630.6250.2730.080.0120.0050.026
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax14.311.116.10.00.00.06.00.00.00.03.40.00.00.3

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value16162116141.9546.2894.4371.7060.9850.1391.0310.6631.688
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax70.574.269.20.00.00.079.20.00.00.05.90.00.021.9

us-gaap:DebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value25226.8027.9396.7013.6892.4612.3587.707
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.00.00.0100.00.00.00.0100.0100.0

us-gaap:OtherDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.4620.4350.6060.5420.3550.0840.0710.0920.1160.0950.0330.0070.0060.032
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.02.01.90.00.00.00.90.00.00.01.40.00.00.4

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.8112.1233.3733.473.973.7481.0560.8890.2970.0670.0380.00.3740.371
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax7.79.810.70.00.00.013.30.00.00.01.60.00.04.8

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.7430.0130.9230.5030.0180.00.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax3.10.10.00.00.80.00.00.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax


Available
Period End2021-06-302021-03-312020-12-312019-12-312018-12-312017-12-31
Value1.873.3872.1232.188113.545
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.2190.2460.3311.2392.5966.6350.2470.2890.3810.5170.830.2070.1360.041
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax11.77.315.60.00.00.011.30.00.00.07.40.00.01.2

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3630.4760.2350.3931.2513.7290.1480.0210.010.2490.5870.6430.6070.697
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax19.414.111.10.00.00.06.80.00.00.05.20.00.019.7

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.9522.0711.5143.9296.251231.7042.0311.9493.5149.5543.1764.2961.924
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax50.961.171.30.00.00.077.90.00.00.085.10.00.054.3

us-gaap:DebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value5.59110342.1882.4042.3614.389113.545
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.00.00.0100.00.00.00.0100.0100.0

us-gaap:OtherDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0350.0560.0090.0180.0490.5250.0390.0080.00.00.0110.040.00.0
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax1.91.70.40.00.00.01.80.00.00.00.10.00.00.0

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3010.4110.0340.0120.0020.4130.050.0550.0210.0090.0320.030.2440.124
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax16.112.11.60.00.00.02.30.00.00.00.30.00.03.5

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.1270.00.10.2160.3740.3270.139
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax0.03.70.00.01.90.00.03.9

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value91589989888779277972467668767675770870873274174073570670268162959658196879593949990958986
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value11511411010798947871576465657157
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis12.612.812.312.112.412.110.810.58.49.58.69.210.07.8

us-gaap:CommercialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value109112115109104916761454847473233
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis11.912.412.812.313.211.79.39.26.67.16.26.74.64.5

us-gaap:CorporateDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value548535546534461460450431356235259279285346
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis60.059.560.860.258.259.162.163.851.934.834.239.540.346.7

us-gaap:DebtSecurities


Available
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value887792779724676687676757741
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value28211815129.1635.0495.1088.2091515182.86311
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis3.22.42.01.81.61.20.70.81.22.32.12.60.41.5

us-gaap:ResidentialMortgageBackedSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value92104108120115124124106656.5134.6032.5242125
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis10.111.712.113.514.615.917.215.79.61.00.60.43.13.4

us-gaap:USTreasurySecurities


Available
Period End2021-06-302021-03-312019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2010150279208363611
Percentage of AvailableForSaleDebtSecuritiesAmortizedCostBasis2.31.221.841.327.55.25.21.6

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value194187185160
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value197189189161
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value429421419419
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value442433435431
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value270274276295
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value276278285301
Percentage of AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value20161713
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue


Available
Period End2021-06-302021-03-312020-12-312020-09-30
Value20161713
Percentage of AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecurities

us-gaap:AvailableForSaleSecuritiesDebtSecurities


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value93691892890880475173068068967474870470572974574974471370769564460658799809933100559571946591988881868884208163831281598170807979777840784879057543
Percentage of AvailableForSaleSecuritiesDebtSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesCurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value201617132734323261139402
Percentage of AvailableForSaleSecuritiesDebtSecuritiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent

us-gaap:AvailableForSaleSecuritiesDebtSecuritiesNoncurrent


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value915901910894777716697647627534346
Percentage of AvailableForSaleSecuritiesDebtSecuritiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityNoncurrent

us-gaap:ContractWithCustomerLiabilityNoncurrent


Contract
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1818181918181818181717
Percentage of ContractWithCustomerLiabilityNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtInstrumentCollateralAmount us-gaap:LongtermDebtType

us-gaap:DebtInstrumentCollateralAmount

us-gaap:SecuredDebt


Debt
Period End2021-06-302021-03-312020-12-312020-09-30
Value122125126126
Percentage of DebtInstrumentCollateralAmount100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLoss


Debt
Period End2021-06-302020-12-312020-09-302020-06-302020-03-31
Value100000.0200000.0400000.0400000.0600000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLoss100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger us-gaap:ExternalCreditRatingByGrouping

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger

us-gaap:ExternalCreditRatingInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1726101113134646599498775462
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExternalCreditRatingNonInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8.559117.9528.2368.0586.822109.985153419113.6983.826
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger49.643.773.068.758.752.023.021.525.536.720.414.96.86.2

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1624101113134125143.2311.2480.00.00.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger96.494.8100.0100.0100.0100.088.454.525.13.41.30.00.00.0

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.4761.1860.00.00.00.00.3720.5380.5471916138.9311
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger2.84.50.00.00.00.00.81.20.920.217.317.116.419.3

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8.703117.9528.2368.0586.8221530589486392831
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger50.444.473.068.758.752.033.865.899.4100.288.250.452.250.0

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value253718202119575674128118895866
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger149.6143.7173.0168.7158.7152.0123.0121.5125.5136.7120.4114.9106.8106.2

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.00.00.00.00.00.00.00.00.00.3881.6181.7035.4167.064
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger0.00.00.00.00.00.00.00.00.00.41.62.210.011.4

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.01111111.4741.497
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger0.012.511.914.82.72.4

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:ExternalCreditRatingByGrouping

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss

us-gaap:ExternalCreditRatingInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value107000.0135000.099000.0241000.0526000.01146000.0218000.0255000.0354000.0807000.01641000.02325000.01577000.0985000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExternalCreditRatingNonInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value366000.0724000.0870000.01436000.01893000.02917000.01359000.01131000.0971000.01446000.01686000.0511000.0167000.0422000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss342.1536.3878.8595.9359.9254.5623.4443.5274.3179.2102.722.010.642.8

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value71000.0120000.099000.0241000.0526000.01145000.0214000.0205000.0216000.049000.04000.0000
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss66.488.9100.0100.0100.099.998.280.461.06.10.20.00.00.0

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value34000.013000.000001000.02000.04000.0232000.0412000.0427000.0306000.0612000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss31.89.60.00.00.00.00.50.81.128.725.118.419.462.1

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value368000.0726000.0870000.01436000.01893000.02918000.01362000.01179000.01105000.01867000.02688000.0895000.0556000.0339000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss343.9537.8878.8595.9359.9254.6624.8462.4312.1231.4163.838.535.334.4

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value473000.0859000.0969000.01677000.02419000.04063000.01577000.01386000.01325000.02253000.03327000.02836000.01744000.01407000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss442.1636.3978.8695.9459.9354.5723.4543.5374.3279.2202.7122.0110.6142.8

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0000000005000.026000.027000.0146000.095000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.00.00.00.00.00.00.00.00.00.61.61.29.39.6

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312019-03-312018-12-312018-09-302018-06-302017-12-31
Value0100000.0197000.0343000.049000.029000.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss0.012.412.014.83.12.9

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:ExternalCreditRatingByGrouping

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months

us-gaap:ExternalCreditRatingInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value14019486184135362768013677242284269214
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExternalCreditRatingNonInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value283228475678112831751257010857
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months20.216.533.025.742.021.815.035.323.196.651.824.840.326.8

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4534507875722039405955432821
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months32.217.757.642.356.020.027.448.929.676.322.815.510.510.1

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9.242316193059217.3256.9659.49117221510
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months6.611.919.110.322.816.528.89.15.112.27.37.95.85.0

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value801233911681299253910482157145194171
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months56.963.845.763.160.282.733.849.776.8106.464.851.272.279.8

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value16922611523219244187108167153368354377272
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months120.2116.5133.0125.7142.0121.8115.0135.3123.1196.6151.8124.8140.3126.8

us-gaap:OtherDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5.6067.331.0191.0572.786.3582.351.5810.18.213120.211.499
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months4.03.81.20.62.11.83.12.00.13.44.40.10.7

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value29318.163171.4072.7981620151.2080.7770.794.5264.156
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months20.616.19.49.41.00.821.925.511.51.60.30.31.71.9

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312019-03-312018-12-312018-09-302018-06-302017-12-31
Value6.2760.0129243410
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months3.20.053.38.813.04.8

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:ExternalCreditRatingByGrouping

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss

us-gaap:ExternalCreditRatingInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.2122.1650.5611.9163.849190.2870.1760.2960.5341.2953.2073.5541.064
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExternalCreditRatingNonInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.1850.3630.5931.9983.881110.3240.8420.741.6026.6081.5662.7631.074
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss15.316.8105.7104.3100.858.7112.9478.4250.0300.0510.348.877.7100.9

us-gaap:DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.1480.1260.2320.9982.075.490.0330.0840.1650.4680.8260.2070.1360.041
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss12.25.841.452.153.828.711.547.755.787.663.86.53.83.9

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3290.4630.2350.3931.2513.7290.1470.0190.0060.0170.1750.2160.3010.085
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss27.121.441.920.532.519.551.210.82.03.213.56.78.58.0

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.5841.3450.6442.4934.358200.3420.8520.8441.6476.8662.2813.741.585
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss48.262.1114.8130.1113.2105.7119.2484.1285.1308.4530.271.1105.2149.0

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.3972.5281.1543.9147.73300.6111.0181.0362.1367.9034.7736.3172.138
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss115.3116.8205.7204.3200.8158.7212.9578.4350.0400.0610.3148.8177.7200.9

us-gaap:OtherDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0350.0560.0090.0180.0490.5250.0390.0080.00.0110.040.00.0
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss2.92.61.60.91.32.713.64.50.00.81.20.00.0

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3010.4110.0340.0120.0020.4130.050.0550.0210.0040.0060.0030.0980.029
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss24.819.06.10.60.12.217.431.27.10.70.50.12.82.7

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.1270.00.0190.0310.2780.11
Percentage of DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss5.90.01.51.07.810.3

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition us-gaap:ExternalCreditRatingByGrouping

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition

us-gaap:ExternalCreditRatingInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value15822097196149375122126195172340361323276
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExternalCreditRatingNonInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3743365564852238461091458211261
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition23.419.837.528.343.622.818.030.223.863.842.822.734.622.1

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPosition us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value6159609089856164556256432821
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition39.226.962.445.860.122.850.451.028.336.416.612.28.77.8

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9.7162416193059227.8637.5122834352422
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition6.111.017.09.720.715.918.26.23.816.610.29.97.68.2

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value8813547124893064170163177243184222202
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition56.261.548.863.560.081.733.855.683.6103.071.551.068.973.1

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value195264134252214460144164241281486444435338
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition123.4119.8137.5128.3143.6122.8118.0130.2123.8163.8142.8122.7134.6122.1

us-gaap:OtherDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value5.6067.331.0191.0572.786.3582.351.5810.18.213120.211.499
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition3.53.31.00.51.91.71.91.20.12.43.50.10.5

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value29318.163171.4072.7981620151.5962.3952.4939.94211
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition18.414.28.48.80.90.713.616.28.00.90.70.73.14.1

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312019-03-312018-12-312018-09-302018-06-302017-12-31
Value6.27611141363611
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPosition2.86.841.410.111.34.2

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss us-gaap:ExternalCreditRatingByGrouping

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss

us-gaap:ExternalCreditRatingInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.3192.30.662.1574.375200.5050.4310.651.3412.9365.5325.1312.049
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExternalCreditRatingNonInvestmentGrade


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.5511.0871.4633.4345.774141.6831.9731.7113.0488.2942.0772.931.496
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss41.847.3221.7159.2132.069.8333.3457.8263.2227.3282.537.557.173.0

us-gaap:DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss us-gaap:FinancialInstrument

us-gaap:CollateralizedDebtObligations


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.2190.2460.3311.2392.5966.6350.2470.2890.3810.5170.830.2070.1360.041
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss16.610.750.257.459.332.748.967.158.638.628.33.72.72.0

us-gaap:CommercialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3630.4760.2350.3931.2513.7290.1480.0210.010.2490.5870.6430.6070.697
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss27.520.735.618.228.618.429.34.91.518.620.011.611.834.0

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.9522.0711.5143.9296.251231.7042.0311.9493.5149.5543.1764.2961.924
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss72.290.0229.4182.2142.9114.1337.4471.2299.8262.0325.457.483.793.9

us-gaap:DebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value1.873.3872.1235.59110342.1882.4042.3614.389117.6098.0613.545
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss141.8147.3321.7259.2232.0169.8433.3557.8363.2327.3382.5137.5157.1173.0

us-gaap:OtherDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.0350.0560.0090.0180.0490.5250.0390.0080.00.0110.040.00.0
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss2.72.41.40.81.12.67.71.90.00.40.70.00.0

us-gaap:ResidentialMortgageBackedSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.3010.4110.0340.0120.0020.4130.050.0550.0210.0090.0320.030.2440.124
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss22.817.95.20.60.02.09.912.83.20.71.10.54.86.1

us-gaap:USTreasurySecurities


Debt
Period End2021-03-312019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.1270.10.2160.3740.3270.139
Percentage of DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss5.57.57.46.86.46.8

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent

us-gaap:DeferredCompensationLiabilityClassifiedNoncurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value131614119.57111131313161313111614121116131212181624
Percentage of DeferredCompensationLiabilityClassifiedNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredCompensationLiabilityCurrent

us-gaap:DeferredCompensationLiabilityCurrent


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value8.5811317129.674101010121013118.8019.7115129.89814191613152014
Percentage of DeferredCompensationLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxAssetsNet

us-gaap:DeferredIncomeTaxAssetsNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1716122118191724
Percentage of DeferredIncomeTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value422918235279147103251283
Percentage of DeferredIncomeTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDeferredIncome


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value3872000.03755000.03524000.00
Percentage of DeferredTaxAssetsDeferredIncome100.0100.0100.00.0

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsGross


Deferred
Period End2020-12-312019-12-312018-12-312018-09-302018-06-302018-03-312018-01-01
Value54464237312929
Percentage of DeferredTaxAssetsGross100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2.6921.6631.2460.8120.0810.5460.044
Percentage of DeferredTaxAssetsOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value14111214191917
Percentage of DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross

us-gaap:DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross


Deferred
Period End2020-12-31
Value1083000.0
Percentage of DeferredTaxAssetsUnrealizedLossesOnAvailableforSaleSecuritiesGross100.0

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesOther


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value0.2280.1380.1570.1591.4671.1230.265
Percentage of DeferredTaxLiabilitiesOther100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses

us-gaap:DeferredTaxLiabilitiesPrepaidExpenses


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3800000.04890000.01376000.05568000.08120000.06929000.08090000.0
Percentage of DeferredTaxLiabilitiesPrepaidExpenses100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value29191310181717
Percentage of DeferredTaxLiabilitiesPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesCurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesCurrent


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value752000.01183000.01730000.0236000.02288000.0389000.097000.0
Percentage of DefinedBenefitPensionPlanLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent

us-gaap:DefinedBenefitPensionPlanLiabilitiesNoncurrent


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value184174164169161153145136129123116154145176207208219211221178170162172188
Percentage of DefinedBenefitPensionPlanLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation

us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value1006858727767657583583425453363297252
Percentage of DefinedBenefitPlanAccumulatedBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value128153156201191153192101226179115109
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value-118720000.0-142680000.0-144160000.0-191260000.0-185280000.0-148860000.0-187000000.0-95000000.0-220000000.0-173000000.0-110000000.0-104000000.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax

us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value9.571011106.0234.6055.06.06.06.05.05.0
Percentage of DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet

us-gaap:DefinedBenefitPlanAmountsRecognizedInBalanceSheet


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value-165100000.0-146840000.0-118600000.0-207770000.0-224120000.0-173090000.0-189000000.0-95000000.0-201000000.0-140000000.0-72000000.0-65000000.0
Percentage of DefinedBenefitPlanAmountsRecognizedInBalanceSheet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value2.960.03590.04470.0373
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value2.960.03590.04470.03730.04240.04570.0417
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate100.0100.0100.0100.00.00.00.0

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease

us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value3.210.03210.03320.03320.03320.03320.0332
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnfundedPlan, us-gaap:NonqualifiedPlan, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value5.00.050.050.050.050.050.05
Percentage of DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease155.8155.8150.6150.6150.6150.6150.6

us-gaap:DefinedBenefitPlanBenefitObligation

us-gaap:DefinedBenefitPlanBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-31
Value12461054886951816724737557612488400344326
Percentage of DefinedBenefitPlanBenefitObligation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter


Defined
Period End2020-12-31
Value248
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths


Defined
Period End2020-12-31
Value25
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive


Defined
Period End2020-12-31
Value40
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour


Defined
Period End2020-12-31
Value36
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree


Defined
Period End2020-12-31
Value33
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree100.0

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo

us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo


Defined
Period End2020-12-31
Value29
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo100.0

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets

us-gaap:DefinedBenefitPlanFairValueOfPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312011-12-312010-12-31
Value10819077677435925515474623480.0
Percentage of DefinedBenefitPlanFairValueOfPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:DefinedBenefitPlanFundedStatusOfPlan

us-gaap:DefinedBenefitPlanFundedStatusOfPlan


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value-165100000.0-146840000.0-118600000.0-207770000.0-224120000.0-173090000.0-189000000.0-95000000.0-201000000.0-140000000.0-72000000.0-65000000.0
Percentage of DefinedBenefitPlanFundedStatusOfPlan100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value1081907767743
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation

us-gaap:DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value12461054886951
Percentage of DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation

us-gaap:UnfundedPlan, us-gaap:NonqualifiedPlan, us-gaap:SupplementalEmployeeRetirementPlanDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-31
Value262318
Percentage of DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation100.0100.0100.0

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanPlanAssetsTargetAllocationPercentage

erie:EmergingMarketsEquity, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value21.00.20.20.11
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage100.0100.0100.0100.0

erie:ForeignEquitySecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value18.00.180.160.20.2
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage85.790.080.0181.80.0

erie:InternationalRiskControlledEquity, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value68.00.690.690.78
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage323.8345.0345.0709.1

erie:InternationalSmallCapitalizationRiskControlledEquity, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value11.00.110.110.11
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage52.455.055.0100.0

erie:UsEquityIndex, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value77.00.780.790.48
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage366.7390.0395.0436.4

erie:UsEquitySecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value27.00.270.250.350.35
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage128.6135.0125.0318.20.0

erie:UsSmallCapitalizationCoreEquity, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value23.00.220.210.22
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage109.5110.0105.0200.0

us-gaap:DebtSecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value54.00.540.580.440.44
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage257.1270.0290.0400.00.0

us-gaap:DomesticCorporateDebtSecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value67.00.670.620.44
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage319.0335.0310.0400.0

us-gaap:EquitySecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value45.00.450.410.550.55
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage214.3225.0205.0500.00.0

us-gaap:MoneyMarketFunds, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.00.010.010.010.01
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage4.85.05.09.10.0

us-gaap:USTreasurySecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-31
Value33.00.330.320.44
Percentage of DefinedBenefitPlanPlanAssetsTargetAllocationPercentage157.1165.0160.0400.0

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanFundingStatus, us-gaap:RetirementPlanTaxStatus, us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

erie:ForeignEquitySecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value18.00.180.140.190.18
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations100.0100.0100.0100.0100.0

erie:UsEquitySecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value28.00.280.240.390.38
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations155.6155.6171.4205.3211.1

us-gaap:DebtSecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value53.00.530.610.410.43
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations294.4294.4435.7215.8238.9

us-gaap:EquitySecurities, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value46.00.460.380.580.56
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations255.6255.6271.4305.3311.1

us-gaap:MoneyMarketFunds, us-gaap:FundedPlan, us-gaap:QualifiedPlan, us-gaap:PensionPlansDefinedBenefit


Defined
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1.00.010.010.010.01
Percentage of DefinedBenefitPlanWeightedAverageAssetAllocations5.65.67.15.35.6

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized us-gaap:PlanName

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized

erie:EquityCompensationPlan


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value0.60.40.30.50.70.7
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized100.0100.0100.0100.0100.0100.0

erie:LongTermIncentivePlan


Employee
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value6.84.95.77.67.31111
Percentage of EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized1133.31225.01900.01520.01042.91585.70.0

us-gaap:EquityMethodInvestments

us-gaap:EquityMethodInvestments


Equity
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1015222632303034373944454953545865708288927943915979107310721098108611371177117112171278128212911290141013901324
Percentage of EquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFVNINoncurrent

us-gaap:EquitySecuritiesFVNINoncurrent


Equity
Period End2021-06-302020-12-31
Value9394
Percentage of EquitySecuritiesFVNINoncurrent100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue

us-gaap:FairValueInputsLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-31
Value30232671241911107.9159.2959.8039.3521511168.64620115916319422216215916417019823120611283887173747578839211295
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:ValuationTechnique

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, erie:NonBindingBrokerQuote


Fair
Period End2020-09-30
Value12
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue16.9

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:CollateralizedDebtObligations, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value0.750.00.00.00.2590.00.02.30.00.00.00.00.02.20.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue2.50.00.00.01.10.00.00.00.00.00.00.00.021.80.0

us-gaap:FairValueInputsLevel3, us-gaap:CommercialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value17161950187.3833.3214.7072.5511.1820.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue56.168.374.270.675.238.028.50.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:CorporateDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value6.0785.465.8257.034.916128.3247.0586.37311128.27116.3097.8797.9159.2959.8039.352
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue19.923.022.29.920.562.071.50.00.00.00.00.00.00.078.2100.0100.0100.0100.0

us-gaap:FairValueInputsLevel3, us-gaap:NonredeemablePreferredStock, us-gaap:NonredeemablePreferredStock


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1.01.090.03.0050.7950.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue3.34.60.04.23.30.00.0

us-gaap:FairValueInputsLevel3, us-gaap:OtherDebtSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312018-09-302018-06-302017-12-31
Value2.5440.5210.00.9050.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue8.32.20.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:ResidentialMortgageBackedSecurities, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-31
Value3.0410.4730.937100.00.00.00.00.9150.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue10.02.03.615.30.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:InvestmentSecondaryCategorization

us-gaap:FairValueInputsLevel3, us-gaap:AvailableforsaleSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value29222668231911148.92413129.175116.309107.9159.2959.8039.3521511168.6465.2690.660.110.01.432
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue96.795.4100.095.896.7100.0100.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.02.60.40.10.00.9

us-gaap:FinancingReceivableAllowanceForCreditLosses

us-gaap:FinancingReceivableAllowanceForCreditLosses


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1100000.01100000.01100000.01000000.01000000.01000000.0
Percentage of FinancingReceivableAllowanceForCreditLosses100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsGross erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType

us-gaap:FiniteLivedIntangibleAssetsGross

us-gaap:SoftwareAndSoftwareDevelopmentCosts


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value196191163129124110
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0

us-gaap:GuaranteeObligationsMaximumExposure us-gaap:FinancialInstrument

us-gaap:GuaranteeObligationsMaximumExposure

us-gaap:LoanPurchaseCommitments


Guarantee
Period End2021-03-312020-12-312020-09-30
Value1500000.01500000.0700000.0
Percentage of GuaranteeObligationsMaximumExposure100.0100.0100.0

us-gaap:IncomeTaxesReceivable

us-gaap:IncomeTaxesReceivable


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value2.6643.9650.00.00.4626.0757.7910.08.1620.00.014290.00.00.05.260.00.00.01111
Percentage of IncomeTaxesReceivable100.0100.00.00.0100.0100.0100.00.0100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive

us-gaap:SecuredDebt


Long
Period End2020-12-31
Value84
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths

us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value2109000.02109000.02031000.02020000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive

us-gaap:SecuredDebt


Long
Period End2020-12-31
Value2449000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour

us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value2449000.02448000.02302000.02303000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree

us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value2302000.02302000.02226000.02226000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo

us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value2226000.02226000.02109000.02110000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo100.0100.0100.0100.0

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear

us-gaap:SecuredDebt


Long
Period End2021-06-302021-03-312020-09-30
Value1021000.01529000.0520000.0
Percentage of LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear100.0100.0100.0

us-gaap:NotesAndLoansReceivableNetNoncurrent

us-gaap:NotesAndLoansReceivableNetNoncurrent


Notes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value60596258585960
Percentage of NotesAndLoansReceivableNetNoncurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:NotesReceivableGross us-gaap:FinancialInstrument

us-gaap:NotesReceivableGross

us-gaap:LoanPurchaseCommitments


Notes
Period End2021-06-302021-03-312020-12-312020-09-30
Value8700000.06500000.06400000.0900000.0
Percentage of NotesReceivableGross100.0100.0100.0100.0

us-gaap:NotesReceivableNet us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:NotesReceivableNet

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Notes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value72697366636171
Percentage of NotesReceivableNet100.0100.0100.0100.0100.0100.0100.0

us-gaap:NotesReceivableNet us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Notes
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value68686964656667
Percentage of NotesReceivableNet94.497.393.797.7103.8108.394.5

us-gaap:SecurityOwnedAndPledgedAsCollateralFairValue us-gaap:CreditFacility

us-gaap:SecurityOwnedAndPledgedAsCollateralFairValue

us-gaap:RevolvingCreditFacility


Security
Period End2021-06-302021-03-312020-12-312020-09-30
Value123123124124
Percentage of SecurityOwnedAndPledgedAsCollateralFairValue100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased erie:IncentivePlanByPerformancePeriod, us-gaap:PlanName, us-gaap:StatementClassOfStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased

erie:PerformancePeriodEquityCompensationPlan2017, erie:EquityCompensationPlan, us-gaap:CommonClassA


Share
Period End2020-12-31
Value165.82
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased100.0

erie:PerformancePeriodLongTermIncentivePlan2017To2019, erie:IncentiveCompensationDeferralPlan, us-gaap:CommonClassA


Share
Period End2020-12-31
Value185.31
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased111.8

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased us-gaap:PlanName, us-gaap:StatementClassOfStock

erie:IncentiveCompensationDeferralPlan, us-gaap:CommonClassA


Share
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value155.92176.34176.26175.64175.23119.28119.2119.14119.17
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased94.00.00.00.00.00.00.00.00.0

erie:StockCompensationPlanOutsideDirectors, us-gaap:CommonClassA


Share
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-312015-12-172015-11-302014-05-31
Value201.78194.62198.17190.59183.62122.19119.52115.69114.87121.85121.46118.56118.6999.2394.9994.9987.0376.45
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased121.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquityBeforeTreasuryStock

us-gaap:StockholdersEquityBeforeTreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value239123542334239323402263227922652209215921192067202619862003202119991975196319851961193019151849
Percentage of StockholdersEquityBeforeTreasuryStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockCommonValue

us-gaap:TreasuryStockCommonValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-31
Value1167116311631162116211591158115811581158115711571156115711551155115511561155115511551155
Percentage of TreasuryStockCommonValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept


us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:StatementClassOfStock
(None,)
Weighted Average Number Of Diluted Shares Outstandingus-gaap: Statement Class Of Stock
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:StatementClassOfStock
(None,)
Weighted Average Number Of Shares Outstanding Basicus-gaap: Statement Class Of Stock
us-gaap:EarningsPerShareBasic
us-gaap:StatementClassOfStock
(None,)
Earnings Per Share Basicus-gaap: Statement Class Of Stock
us-gaap:EarningsPerShareDiluted
us-gaap:StatementClassOfStock
(None,)
Earnings Per Share Dilutedus-gaap: Statement Class Of Stock
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic
us-gaap:StatementClassOfStock
(None,)
Net Income Loss Available To Common Stockholders Basicus-gaap: Statement Class Of Stock
us-gaap:OperatingExpenses
us-gaap:ProductOrService
(None,)
Operating Expensesus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService
(None,)
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ProductOrService, us-gaap:TimingOfTransferOfGoodOrService
(None, 'us-gaap:TransferredOverTime')
Revenue From Contract With Customer Excluding Assessed Taxus-gaap: Product Or Service, us-gaap: Timing Of Transfer Of Good Or Service
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:PropertyPlantAndEquipmentGross
erie:PropertyPlantandEquipmentandFiniteLivedIntangibleAssetsNetByType
(None,)
Property Plant And Equipment Grosserie: Property Plantand Equipmentand Finite Lived Intangible Assets Net By Type
us-gaap:StockholdersEquity
us-gaap:StatementEquityComponents
(None,)
Stockholders Equityus-gaap: Statement Equity Components
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents
(None,)
Accumulated Other Comprehensive Income Loss Net Of Taxus-gaap: Statement Equity Components