KMPR


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

Table of contents


us-gaap:StatementEquityComponents
us-gaap:SharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted
us-gaap:AwardType, us-gaap:PlanName
us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:BenefitsLossesAndExpenses

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:IncomeLossFromContinuingOperations

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

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

us-gaap:IncomeTaxesPaidNet

us-gaap:InterestExpense
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:InterestIncomeExpenseNet

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

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

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

us-gaap:OperatingExpenses

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

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

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

us-gaap:Revenues
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:StatementBusinessSegments

us-gaap:Liabilities
us-gaap:ConsolidatedEntities
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

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

us-gaap:Cash
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities
us-gaap:ShortTermInvestments
us-gaap:ConsolidatedEntities
us-gaap:PropertyPlantAndEquipmentNet

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
us-gaap:ConsolidatedEntities

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset
us-gaap:ConsolidatedEntities

us-gaap:EquitySecuritiesFvNi
us-gaap:ConsolidatedEntities
us-gaap:EquitySecuritiesByIndustry, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:EquitySecuritiesByIndustry, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities
us-gaap:TaxesPayableCurrent

us-gaap:LongTermDebt
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:LongtermDebtType

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
us-gaap:ConsolidatedEntities

us-gaap:OperatingLeaseLiability
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
us-gaap:ConsolidatedEntities

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

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapitalCommonStock
us-gaap:ConsolidatedEntities

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:NetCashProvidedByUsedInOperatingActivities

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

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:ProceedsFromIssuanceOfLongTermDebt
us-gaap:LongtermDebtType
us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividends

us-gaap:Dividends
us-gaap:StatementEquityComponents

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

kmpr:AmortizationOfIntangibleAssetsAcquired

kmpr:BusinessAcquisitionProFormaTotalExpenses
us-gaap:ConsolidationItems
kmpr:BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsBeforeTax
us-gaap:ConsolidationItems
kmpr:BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsNetOfTax
us-gaap:RetirementPlanType
kmpr:DefinedBenefitPensionPlanNumberofParticipantsandBeneficiaries
us-gaap:ConsolidationItems
kmpr:EquitySecuritiesFVNIGainLossNetofTax
us-gaap:ConsolidationItems
kmpr:GainLossOnSaleOfInvestmentsNetOfTax
us-gaap:ConsolidationItems
kmpr:GainLossRelatedtoLitigationSettlementNetoftax

kmpr:ImpairmentLosses

kmpr:InterestAndOtherExpenses

kmpr:OperatingIncomeLossNetofTax
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

kmpr:OperatingLeaseLiabilityReduction

kmpr:OperatingLeaseRightOfUseAssetAmortization
us-gaap:ConsolidationItems
kmpr:OtherOperatingIncomeExpenseNetofTax
us-gaap:RetirementPlanType
kmpr:OtherPostretirementBenefitPlanNumberOfActiveEmployeesCovered
us-gaap:RetirementPlanType
kmpr:OtherPostretirementBenefitPlanNumberOfRetiredEmployeesCovered
us-gaap:ConsolidationItems
kmpr:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetOfTax
us-gaap:StatementEquityComponents
kmpr:ShareBasedAwardsIssuedDuringPeriodNetOfSharesExchanged

kmpr:ShareBasedAwardsNetOfSharesExchanged
us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities
kmpr:VariableInterestEntityFundingInvestmentCommitmentFunding

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss

us-gaap:BusinessAcquisitionsProFormaRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold
us-gaap:FinancialInstrument

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff
us-gaap:FinancialInstrument
us-gaap:InvestmentType
us-gaap:DebtSecuritiesAvailableForSaleRealizedGain
us-gaap:InvestmentType
us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanInterestCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost

us-gaap:DepreciationAmortizationAndAccretionNet
us-gaap:BusinessAcquisition
us-gaap:DirectPremiumsWritten

us-gaap:EquitySecuritiesFvNiGainLoss
us-gaap:ConsolidationItems

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3
us-gaap:FairValueByAssetClass

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3
us-gaap:FairValueByAssetClass

us-gaap:FinanceLeasePrincipalPayments
us-gaap:ConsolidationItems
us-gaap:GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ConsolidationItems
us-gaap:GainLossRelatedToLitigationSettlement

us-gaap:GrossInvestmentIncomeOperating
us-gaap:InvestmentType

us-gaap:IncomeLossAttributableToParent
us-gaap:ConsolidatedEntities
us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:InvestmentType

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions
us-gaap:ConsolidatedEntities
us-gaap:IncomeTaxCreditsAndAdjustments

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInUnearnedPremiums

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestPaid

us-gaap:InvestmentIncomeInvestmentExpense
us-gaap:InvestmentType

us-gaap:LeaseCost

us-gaap:LiabilityForFuturePolicyBenefitsPeriodExpense
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1
us-gaap:StatementEquityComponents
us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeasePayments
us-gaap:CreditLossStatus
us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
us-gaap:StatementEquityComponents
us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossTax
us-gaap:CreditLossStatus
us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax
us-gaap:CreditLossStatus
us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
us-gaap:CreditLossStatus
us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

us-gaap:OtherCostAndExpenseOperating
us-gaap:ConsolidationItems
us-gaap:OtherNoncashIncomeExpense
us-gaap:ConsolidationItems
us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
us-gaap:ConsolidationItems
us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents
us-gaap:ProductOrService
us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromShortTermInvestments

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesEquity

us-gaap:PaymentsToAcquireLifeInsurancePolicies

us-gaap:PaymentsToAcquireMortgageNotesReceivable

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireRealEstateHeldForInvestment
us-gaap:Range, us-gaap:StatementScenario, us-gaap:SubsequentEventType
us-gaap:PensionAndOtherPostretirementBenefitExpense

us-gaap:PremiumReceivableCreditLossExpenseReversal

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromRepaymentsOfSecuredDebt

us-gaap:ProceedsFromSaleAndCollectionOfMortgageNotesReceivable

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity

us-gaap:ProceedsFromSaleOfOtherInvestments

us-gaap:ProceedsFromSaleOfRealEstateHeldforinvestment

us-gaap:ProceedsFromStockPlans
us-gaap:StatementEquityComponents
us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:RetirementPlanType
us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
dei:LegalEntity, us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank
us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings

us-gaap:RepaymentsOfSecuredDebt

us-gaap:RepaymentsOfSeniorDebt

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:ShortTermLeaseCost

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue
us-gaap:StatementEquityComponents
us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementEquityComponents
us-gaap:ProductOrService
us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense
us-gaap:ProductOrService

us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:StatementEquityComponents

us-gaap:VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:VariableLeaseCost

kmpr:DeferredTaxAssetsTaxDeferredExpenseTaxCapitalizationofPolicyAcquisitionCosts

kmpr:DeferredTaxLiabilitiesLifeVIFandPCCustomerRelationshipsAcquired
us-gaap:RetirementPlanType
kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsNextTwelveMonths
us-gaap:RetirementPlanType
kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFive
us-gaap:RetirementPlanType
kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFour
us-gaap:RetirementPlanType
kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearThree
us-gaap:RetirementPlanType
kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearTwo
us-gaap:RetirementPlanType
kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsafterYearFive

kmpr:DividendsToShareholdersThatCanBePaidByParentCompanyWithoutRestrictions

kmpr:InvestmentInConvertibleBonds

kmpr:MortgageLoansonRealEstateandOther

kmpr:OtherShorttermInvestmentsFairValueDisclosure

kmpr:OutstandingCommitmentsToFundEquityMethodLimitedLiabilityInvestments
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:InvestmentType
us-gaap:ExternalCreditRatingByGrouping, us-gaap:FinancialInstrument
kmpr:PercentageofUnrealizedLossPositiontoAmortizedCostBasisofAvailableforSaleSecurityAverage

kmpr:SharebasedCompensationArrangementbySharebasedPaymentAwardDeferredStockUnitsOutstandingWeightedAverageExercisePrice

srt:LifeInsuranceInForceAssumed

srt:LifeInsuranceInForceCeded

srt:LifeInsuranceInForceGross

srt:LifeInsuranceInForceNet

srt:LifeInsuranceInForcePercentageAssumedToNet

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedLiabilitiesAndOtherLiabilities
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
us-gaap:Range, us-gaap:ExternalCreditRatingByGrouping, us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:AlternativeInvestmentMeasurementInput
us-gaap:ConsolidatedEntities
us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries
us-gaap:ExternalCreditRatingByGrouping, us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:ValuationTechnique
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:ValuationTechnique
us-gaap:ConsolidatedEntities
us-gaap:AssetsNet
us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:RetirementPlanType
us-gaap:AssetsUnderManagementCarryingAmount

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:ConsolidatedEntities
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveAmortizedCostBasis

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateFairValue
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument
us-gaap:FairValueByMeasurementFrequency, us-gaap:FinancialInstrument, us-gaap:ValuationTechnique
us-gaap:FinancialInstrument

us-gaap:BorrowingsUnderGuaranteedInvestmentAgreements
dei:LegalEntity, us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank, us-gaap:InvestmentType
us-gaap:InvestmentType
us-gaap:FairValueByAssetClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
us-gaap:FairValueByAssetClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIndefiniteLivedIntangibleAssets
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles
us-gaap:FairValueByLiabilityClass
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

us-gaap:CapitalLeasesFutureMinimumSubleaseRentals

us-gaap:CommonStockValueOutstanding
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:ConvertibleDebtFairValueDisclosures
us-gaap:FairValueByMeasurementFrequency
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrumentCarryingAmount
us-gaap:Range, us-gaap:DebtInstrument, us-gaap:ExternalCreditRatingByGrouping, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique
us-gaap:DebtInstrumentMeasurementInput

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

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredPolicyAcquisitionCosts

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards
kmpr:OperatingLossCarryforwardsExpirationDates, us-gaap:IncomeTaxAuthority
us-gaap:IncomeTaxAuthority

us-gaap:DeferredTaxAssetsOther

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsUnearnedPremiumsReserve

us-gaap:DeferredTaxLiabilitiesDeferredExpenseDeferredPolicyAcquisitionCost

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

us-gaap:DeferredTaxLiabilitiesInvestments

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanBenefitObligation
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedAmortizationNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanFundedStatusOfPlan
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear
us-gaap:DefinedBenefitPlanByPlanAssetCategories, us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations

us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
us-gaap:InvestmentType
us-gaap:EquityMethodInvestments

us-gaap:EquitySecuritiesFvNiCost
us-gaap:ConsolidatedEntities

us-gaap:EquitySecuritiesFvNiCurrentAndNoncurrent

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossCumulativeAmount
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
us-gaap:FairValueByAssetClass
dei:LegalEntity, us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank
us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBankAmountOfAdvancesByBranch
us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank
us-gaap:FederalHomeLoanBankBorrowingsFairValueDisclosure
dei:LegalEntity, us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank
us-gaap:FederalHomeLoanBankStock

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityPaymentsDue

us-gaap:FinanceLeaseLiabilityPaymentsDueNextTwelveMonths

us-gaap:FinanceLeaseLiabilityPaymentsDueYearTwo

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IncomeTaxReceivable

us-gaap:IntangibleAssetsGrossExcludingGoodwill

us-gaap:Investments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency, us-gaap:ValuationTechnique

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
us-gaap:ConsolidatedEntities

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpensePropertyCasualtyLiability
us-gaap:ProductOrService

us-gaap:LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense
us-gaap:ProductOrService, us-gaap:Range
us-gaap:LiabilityForFuturePolicyBenefitsInterestRate
us-gaap:ProductOrService
us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseNet

us-gaap:LifeInsuranceCorporateOrBankOwnedAmount

us-gaap:LoansInsurancePolicy
us-gaap:FinancialInstrument
us-gaap:LoansReceivableFairValueDisclosure

us-gaap:LongTermDebtFairValue
us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument, us-gaap:LongtermDebtType

us-gaap:MortgageLoansOnRealEstateCommercialAndConsumerNet

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
us-gaap:ConsolidatedEntities
kmpr:OperatingLossCarryforwardsExpirationDates, us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:IncomeTaxAuthority

us-gaap:OtherInvestments

us-gaap:OtherInvestmentsAndSecuritiesAtCost
us-gaap:FinancialInstrument
us-gaap:OtherLiabilities

us-gaap:OtherReceivables
us-gaap:ConsolidatedEntities
us-gaap:FinancialInstrument

us-gaap:OtherShortTermInvestments
us-gaap:ConsolidatedEntities
us-gaap:PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccounts

us-gaap:PremiumsReceivableAtCarryingValue
us-gaap:ProductOrService
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFive
us-gaap:ProductOrService
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearFour
us-gaap:ProductOrService
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearOne
us-gaap:ProductOrService
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearThree
us-gaap:ProductOrService
us-gaap:PresentValueOfFutureInsuranceProfitsAmortizationExpenseYearTwo

us-gaap:RealEstateInvestmentPropertyNet

us-gaap:ReinsuranceRecoverableForUnpaidClaimsAndClaimsAdjustments
us-gaap:ProductOrService

us-gaap:ReinsuranceRecoverables
us-gaap:ProductOrService
dei:LegalEntity, us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank
us-gaap:SecuritiesLoanedFairValueOfCollateral
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice
us-gaap:AwardType, us-gaap:PlanName
us-gaap:SharesIssuedPricePerShare
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsCumulativePaidClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFive
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearFour
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearOne
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearThree
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsHistoricalClaimsDurationYearTwo
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear
us-gaap:ShortdurationInsuranceContractsIncurredButNotReportedIbnrClaimsLiabilityNet
us-gaap:ProductOrService
us-gaap:ShortdurationInsuranceContractsIncurredClaimsAndAllocatedClaimAdjustmentExpenseNet
us-gaap:ProductOrService, us-gaap:ShortdurationInsuranceContractsAccidentYear

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

us-gaap:ShortdurationInsuranceContractsLiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseAccumulatedUnallocatedClaimAdjustmentExpense
us-gaap:ConsolidatedEntities
us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPayments
dei:LegalEntity
us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
us-gaap:ConsolidatedEntities
dei:LegalEntity
us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired
us-gaap:StatementEquityComponents
us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost
us-gaap:InvestmentType
us-gaap:InvestmentType
us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue

us-gaap:SupplementaryInsuranceInformationDeferredPolicyAcquisitionCosts
us-gaap:StatementBusinessSegments

us-gaap:SupplementaryInsuranceInformationLiabilityForFuturePolicyBenefitsLossesClaimsAndLossExpenseReserves
us-gaap:StatementBusinessSegments

us-gaap:SupplementaryInsuranceInformationUnearnedPremiums
us-gaap:StatementBusinessSegments

us-gaap:UnearnedPremiums
us-gaap:BusinessAcquisition
us-gaap:ValueOfBusinessAcquiredVOBA
us-gaap:ConsolidatedEntities
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

Plots across concepts


IncomeStatement
Operating Income Loss
Expenses
Income Tax Expense Benefit
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
NonCurrent Assets
Operating Lease Right Of Use Asset
Liabilities
Operating Lease Liability
Noncurrent Liabilities
Deferred Income Tax Liabilities Net
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Diluted Shares Outstanding
DividendsAndRepurchase
Dividends
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Next Twelve Months
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:SharesIssued us-gaap:StatementEquityComponents us-gaap:CommonStock▇▇▇▇▇▇███▇▇▇▁▁▁63.665.065.465.465.365.466.766.666.664.964.764.751.651.551.5NANANA51.3NANANA51.3NANANA52.4NANANA55.7NANANA58.5NANANA60.3NANANA61.1NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█64.376866.5528NA66.633566.020866.9742NA67.207766.189965.606NA65.349552.076451.8682NA51.566451.411151.2731NA51.122551.11951.1915NA51.67251.806151.9693NA52.699954.773155.4431NA56.501557.629458.2408NA58.471659.334259.9961NA60.229460.118760.7819NA61.543262.0841NA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█64.376865.4246NA65.362565.257666.5159NA66.622465.408164.815NA64.580451.549951.5029NA51.366851.286251.2731NA51.122551.107751.1915NA51.611851.728151.8728NA52.605354.666555.3129NA56.365857.51958.1305NA58.299759.196759.8657NA60.141460.118760.6775NA61.457861.9852NA
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount █▁2.19041.2128NA0.87610.9150.8289NA0.54470.54170.5745NA0.04720.50420.3296NA0.38210.58441.3051NA1.00951.37741.1873NA0.83390.93221.2441NA1.83051.54131.2501NA2125.82.22.2772NA2529.62.8NANANANANANANANANA
us-gaap:EarningsPerShareBasic ▁▇▆▇▇▅▇▇▇█▃▆▅▅▅▅▅▃▄▂▃▃▃▅▄▄▆▃▃▄▅▆▄▅▃▅▃▅▄▃▃▅▅▄▄▅-0.971.881.491.871.930.961.871.931.872.380.11.420.731.030.710.920.71-0.010.6-0.320.08-0.040.090.730.570.261.240.090.170.630.991.240.591.00.030.950.040.730.420.08-0.010.891.030.580.610.77
us-gaap:EarningsPerShareDiluted ▁▇▆▇▇▅▇▇▇█▃▆▅▅▅▅▅▃▄▂▃▃▃▅▄▄▆▃▃▄▅▆▄▅▃▅▃▅▄▃▃▅▅▄▄▅-0.971.851.461.831.910.951.851.911.842.350.11.40.731.020.710.920.71-0.010.6-0.320.08-0.040.090.730.570.261.240.090.170.630.991.230.591.00.030.950.040.720.420.08-0.010.891.030.580.610.77
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 Operating Margin us-gaap:ConsolidationItems us-gaap:OperatingSegments█▇▇▇▆▇▆▆▆▆▆▆▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▂▂▂1445.71288.41318.51298.41151.51256.91241.31233.01213.41158.21164.31139.5736.4686.7686.3683.0658.9641.3636.4634.6624.2613.7619.1610.9572.5497.6540.5531.0538.0545.5569.4585.4584.3NANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,kmpr:LifeAndHealthInsurance▆▄▆▅▄▆▆▆▆▅▅▅▅▄▅▅▄▄▄▄▃▄▄▄▃▁█▃▂▄▄▆▄214.7208.2215.2211.3207.5214.1215.8213.4216.7212.7211.1209.4212.0208.7211.4211.3208.8206.6206.8207.2201.8205.4205.3206.4204.4194.9223.3202.7200.8205.5208.1215.3208.8NANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,kmpr:PreferredPropertyCasualtyInsurance▃▂▄▄▁▅▇█▇▆██▆▅180.7174.0182.6184.8168.0190.6196.7203.0200.8193.9202.8204.1195.1190.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Operating Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,kmpr:SpecialtyPropertyCasualtyInsurance█▇▇▇▅▆▆▆▆▅▅▅▁1050.3906.2920.7902.3776.0852.2828.8816.6795.9751.6741.2732.8330.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType,us-gaap:PlanName us-gaap:EmployeeStockOption,kmpr:EmployeeStockPurchasePlan█████▁0.20.20.20.20.20.1NA0.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:BenefitsLossesAndExpenses █▁1597.41230.4NA1201.61071.21151.3NA1082.31126.91041.6NA1115.0696.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▄▁▆▅█▂▄▅▆▆▃▄▃▂▃▄▄▃▂▃▄▄▃▃▂▃89.9-166.8229.00000000000006174.0448.5-97.290.7222.2248.1284.4-2.753.6-9.7-41.944.957.559.116.8-87.9-21.374.464.3-20.141.6-85.351.1NANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperations NANA97.5122.3126.164.0124.7129.0122.1155.35.092.337.553.635.947.836.6-0.429.1-18.34.1-2.21.338.027.413.5NANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest NANA120.6152.1159.777.7156.9161.5148.5194.76.180.545.567.044.268.352.1-3.540.6-33.22.6-6.5-1.649.834.317.893.14.011.251.981.4102.046.484.6NANANANA32.7-0.8-16.667.3NANANANA
 us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss▄▃▂▃▂▂▂▂▃▃▃▂▂▂▃▂▄▂▂▂▁▁▁▂▆▁▄▂▂▂▃▂▂▅▂█15.99.80.400000000000001859.03.53.91.2-0.214.612.514.26.5-0.71.97.63.619.05.11.12.9-1.7-2.5-5.22.331.9-3.617.14.3-0.74.413.0-0.41.224.12.650.6NANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▁▄▆▇▇▅▇▇▇█▄▃▅▅▅▆▅▄▅▂▄▃▄▅▅▄▇▄▄▆▇▇▅▇▃▇▃▅▅▃▃▆▆▅▆▆-27.1-1.623.129.833.613.732.232.526.439.41.1-11.88.013.48.320.515.5-3.111.5-14.9-1.5-4.3-2.911.86.94.329.8-0.81.916.726.633.413.926.0-4.325.9-5.114.16.6-4.6-7.323.520.914.316.819.2
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary█▁0.90.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedDefinedBenefitPlansAdjustment██▁█████████████████▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇▇0.10.5-14.80.20.1-0.10.60.0-0.10.2-0.10.00.0-0.10.00.10.10.0-0.2-0.2-0.9-1.0-2.0-2.1-2.2-1.7-0.7-0.7-0.7-0.7-2.3-2.3-2.3-1.9-1.4-1.6NANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedgesNANANA-0.10.00.0-0.10.00.00.00.0-0.10.1-0.10.00.0-0.40.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IncomeTaxExpenseBenefit us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss▃▂▂▂▂▂▂▂▃▃▃▂▂▂▃▂▄▂▂▂▁▁▁▂▆▁▄▂▂▂▃▂▂▅▂█3.32.10.21.90.80.80.10.03.12.63.01.3-0.10.42.61.36.61.80.31.1-0.6-0.9-1.90.911.2-1.36.01.5-0.21.54.5-0.10.48.40.917.8NANANANANANANANANANA
us-gaap:IncomeTaxesPaidNet ▃▅▂█▂▂▄▃▇▂▁▃▂▃▃▂7.930.10.654.21.00.115.99.642.60.0-10.09.8-4.24.67.52.5NANA-10.90.0NANANANANANANANANANANA0.139.30.2NA0.626.42.4NA0.1NANANANANANA
us-gaap:InterestExpense ▅▅▅▂▃▁▄▃▆▅█▇▁▂▂▁▂▅▅▅▅▅11.211.111.38.38.97.510.09.211.811.514.013.47.98.08.07.88.210.911.011.111.111.2NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▁▇▆▇▇▅▇▇▇█▃▆▄▅▄▅▄▃▄▂▃▃▃▄▄▃-62.6123.297.5122.3126.164.0124.7129.0122.1155.36.592.237.653.836.947.736.6-0.331.2-16.34.0-2.14.637.929.713.5NANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:AwardType kmpr:ParticipatingAwards▁█0.00.1NA0.10.10.1NA0.40.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome█▇▁▇▇▇▇▆▇▇▇▇▆▆▇▇▇▇▆▆▆▆▆▆█12.56.8-53.16.32.12.42.6-0.311.610.411.04.9-1.01.35.22.111.83.40.41.6-2.9-3.2-7.1-2.316.8NANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedDefinedBenefitPlansAdjustment██▁███████████████████▇▇▇0.0-0.8-53.1-0.7-0.6-0.61.80.00.10.4-0.2-0.2-0.3-0.20.20.00.10.1-0.4-0.2-1.8-1.6-3.8-3.7-3.9NANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges▆▆▅▆▇▆▄▆▇█▇▆▆▇▇▅▁▇▇▇▇-0.1-0.1-0.2-0.10.0-0.1-0.3-0.10.00.10.0-0.1-0.10.00.0-0.2-0.70.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss▆▄▂▄▃▃▂▂▅▅▅▃▂▂▃▃▆▃▂▂▂▁▁▂█12.67.70.27.12.73.11.1-0.211.59.911.25.2-0.61.55.02.312.43.30.81.8-1.1-1.6-3.31.420.7NANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock us-gaap:CommonStock▁█-62.6123.1NA122.2126.063.9NA128.6121.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁▇▆▇▇▅▇▇▇█▃▆▄▅-62.6123.297.5122.3126.164.0124.7129.0122.1155.36.592.237.653.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted ▁█-62.6123.1NA122.2126.063.9NA128.6121.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetInvestmentIncome █▇▇▅▂▄▅▅▆▄▅▅▄▄▄▄▃▄▄▃▃▂▄▃▃▃▅▃▃▃▃▄▃▄▃▂▃▃▃▁▄▄▄▄▄▄113.9103.1102.792.167.885.693.991.796.082.791.392.078.479.282.685.977.181.679.977.773.767.079.475.976.770.693.172.372.671.176.982.474.680.872.970.475.277.475.358.683.081.684.779.481.880.8
us-gaap:OperatingExpenses NANA1271.51201.61071.21151.31126.81082.31126.91041.61088.61115.0696.4626.0653.1622.0632.3654.9602.1673.9624.6617.8618.6565.6574.9481.4466.6535.8531.3502.7504.6533.7542.5531.3602.6564.1612.4560.8580.6593.6669.5578.1594.2603.7628.5628.3
us-gaap:OperatingIncomeLoss ▁▅▇▆▆█▆▇▆▆▅▆▅▅▅▅▄▄▅▃▄▄▄▅▄▄▅▄▄▅▅▅▅▅▄▅▄▅▄▄▃▅▅▅-136.175.9131.2112.3100.5202.8122.8163.0109.6123.475.095.944.970.436.563.128.3-9.040.2-36.53.4-4.03.747.82.530.578.6-0.211.846.168.256.345.159.6-8.733.8-7.246.031.48.4-37.449.352.444.3NANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▂▂▂▂▂█▂▂▃▂▁▅▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂-13.8-11.5-9.7-11.0-4.778.3-7.3-3.17.7-8.6-21.928.7-6.7-4.0-3.0-3.7-7.1-4.4-2.1-6.4-4.7-12.2-12.7-12.6-11.3-12.3-8.6-7.7-8.6-7.8-12.0-11.1-11.7NANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems us-gaap:OperatingSegments▁▆▇▇▇▇▇█▆▇▆▆▅▆▅▆▅▄▅▃▄▄▄▅▄▅▆▄▄▅▆▆▅-122.387.4140.9123.3105.2124.5130.1166.1101.9132.096.967.251.674.439.566.835.4-4.642.3-30.18.18.216.460.413.842.887.27.520.453.980.267.456.8NANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,kmpr:LifeAndHealthInsurance▅▄▅▅▆▆▇▇▅▆▆▇▇▆▇▇▇▇▇▁▆▇▆▇▆▆█▇▆▇▇▇▇13.2-0.89.615.219.926.535.541.016.129.319.633.033.429.938.736.031.232.635.1-45.725.331.027.335.422.224.851.231.424.734.638.635.231.2NANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,kmpr:PreferredPropertyCasualtyInsurance▄▆▇▁▅█▇█▆▆▆▇▄▇-13.43.019.8-41.80.823.016.126.56.43.36.614.1-8.716.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,kmpr:SpecialtyPropertyCasualtyInsurance▁▆▇█▆▆▆▇▆▇▆▅▅▅-122.185.2111.5149.984.575.078.598.679.499.461.526.928.229.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆▁▆▅█▂▄▅▆▆▄▄▄▃▄▄▅▅▃▄▅▅▄▄▃▅▄▄▅▅▄▄▃▄▄▅▅▄▄▅▅152.5-290.0131.551.7322.4-161.2-34.093.2126.0129.1-9.2-38.6-47.3-95.78.09.822.517.1-119.1-5.070.466.4-24.73.7-115.037.6-58.72.864.478.914.2-17.4-147.6-26.6-32.433.649.44.1-10.192.633.9NANANANANA
us-gaap:OtherIncome ▂▁▁▁▁█▁▂▃▁▁▄▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁7.01.51.90.91.590.33.77.222.71.92.037.81.21.21.11.01.00.91.00.80.60.81.40.80.60.90.60.50.20.10.30.10.20.20.20.20.20.20.20.40.20.20.30.40.30.3
us-gaap:PremiumsEarnedNet █▇▇▇▆▇▇▆▆▆▆▆▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂1337.71200.81214.01206.51085.31166.41145.81135.21116.61074.81063.61052.9658.1609.8605.9598.2582.5563.4561.4558.9553.7546.0541.5536.7500.1431.3451.5462.8470.3477.6495.6507.5512.8509.9520.8527.3529.8529.2536.5543.0548.1546.0561.6568.2578.1581.5
us-gaap:Revenues █▇▇▇▆▆▆▆▆▆▅▆▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂1507.71352.01392.11353.71230.91229.01283.71243.81275.41236.31094.71195.5741.9693.0697.3690.3684.4651.4642.7640.7627.2611.3617.0615.4609.2499.2559.7539.8542.5554.6586.0635.7588.9615.9596.6645.6608.9611.2613.3592.8660.7657.4670.8650.6684.9694.5
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Assets █▇▇▇▇▆▆▆▆▅▅▅▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂14950.714203.714341.914090.413489.412932.312989.112819.912616.512182.211544.911772.68840.58371.08376.28301.08211.48306.88210.58390.38305.98169.78036.18075.68055.17885.07833.47905.37969.87944.27656.47745.97820.88056.28009.18120.88006.87970.48085.98200.68181.98230.08358.5NANA8358.5
us-gaap:Liabilities █▇▇▇▆▆▆▆▆▆▅▅▃▂▂▂▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂10644.59864.69778.59742.99301.59171.59016.88925.78932.88862.18494.88708.86794.86307.26260.66218.66178.06323.26235.36316.76200.76128.66043.76051.06042.85775.15742.75800.85831.25799.55604.95736.85815.85883.85847.45916.35858.15838.65869.85980.56045.76113.56245.1NANA6245.1
us-gaap:LiabilitiesAndStockholdersEquity █▇▇▇▇▆▆▆▆▅▅▅▂▂▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂14950.714203.714341.914090.413489.412932.312989.112819.912616.512182.211544.911772.68840.58371.08376.28301.08211.48306.88210.58390.38305.98169.78036.18075.68055.17885.07833.47905.37969.87944.27656.47745.97820.88056.28009.18120.88006.87970.48085.98200.68181.98230.08358.5NANA8358.5
us-gaap:StockholdersEquity ▇▇█▇▇▆▆▆▆▅▄▄▁▁▁▁▁▁▁▁▁▁▁4306.24339.14563.44347.54187.93760.83972.33894.23683.73320.13050.13063.82045.72063.82115.62082.42033.41983.61975.22073.62105.22041.11992.4NANANA2090.7NANANA2051.5NANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:Cash ▂▇▃▅▅▄▂▂▂▂▁▂█▂▁▂▂▂▂▂▂▂▂▂▂▁▁▂▁▁▁▁▁▂▂▄▃▂▃▆▂▁▂▂▂▂105.1547.4206.1352.2389.3301.3136.8133.6104.4107.075.192.8649.9115.445.7137.6160.9120.0115.7171.1159.8160.4161.7147.193.887.776.193.161.865.066.576.169.597.596.3318.7249.5128.7251.2471.0123.877.5117.2149.6100.8117.2
 us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary█▁33.17.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▁█▃▅▆▄▂▂▁▁▁105.1547.4206.1352.2389.3301.3136.8133.6104.4107.075.1NANANA45.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ShortTermInvestments us-gaap:ConsolidatedEntities srt:ParentCompanyNANA508.2NANANA89.3NANANA64.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidatedEntities us-gaap:VariableInterestEntityNotPrimaryBeneficiary█▁121.554.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures NANA225.3206.2209.9226.3220.4213.4219.7197.8187.0170.0170.9168.8161.0160.1152.8157.4175.9181.1182.7190.5190.6179.4173.5168.1184.8222.8227.1239.0245.1231.4241.7248.1253.0267.3283.9311.7306.3305.0325.3326.0328.0NANA328.0
 us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities srt:ParentCompanyNANA4896.0NANANA4383.7NANANA3736.0NANANA2646.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Goodwill █▇▇▇▇▇▇▇▇▇▇▆▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁1311.91114.01114.01114.01114.01114.01114.01114.01114.01111.51112.41091.2323.0323.0323.0323.0323.0323.0323.0323.0323.0323.0323.0323.0318.5311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8311.8NANA311.8
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill NANA47.8NANANA47.8NANANA47.8NANANA39.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass us-gaap:LicensingAgreementsNANA42.6NANANA42.6NANANA42.6NANANA34.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill NANA320.1NANANA328.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA272.3NANANA280.6NANANA261.0NANANA133.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass kmpr:AgentRelationshipsNANA57.6NANANA62.5NANANA68.0NANANA15.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass kmpr:ValueofBusinessAcquiredNANA20.3NANANA24.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:ComputerSoftwareIntangibleAssetNANA191.0NANANA189.7NANANA149.1NANANA82.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA3.4NANANA4.3NANANA6.7NANANA7.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset ▆▁▂▃▃█▅77.166.568.670.171.982.275.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EquitySecuritiesFvNi █▆▅▃▃▁▇957.7897.4858.5788.2783.3709.8907.3NANANA-64.3NA514.9NA0.0NANANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
 us-gaap:TaxesPayableCurrent us-gaap:ConsolidatedEntities srt:ParentCompanyNANA41.5NANANA55.3NANANA40.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:LongTermDebt ▇▇██▃▃▃▃▄▅▅▇▅▁▁▁▁▃▃1122.31122.61172.81173.0777.7778.1778.4778.7873.3908.5909.01123.7951.8592.3592.3592.2592.1751.8751.6NANANA750.6NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▇█▇▇▄▅▅▄▃▂▂▁▁▁▁269.6227.6285.7245.5226.8116.0178.2175.3124.182.626.240.40.01.114.811.9NANA0.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo █▅▁▄▃▃▁23.722.019.521.220.620.519.3NANANA18.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree █▅▂▆▅▄▁20.919.317.819.719.018.917.0NANANA16.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour ▄▂▁█▇▆▃15.213.913.117.717.016.714.7NANANA15.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive ▄▃▁█▇▆▁10.19.18.411.911.311.08.3NANANA12.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive █▁▁▆▆▇▄34.024.224.231.531.032.328.1NANANA27.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:StockholdersEquity ▇▇█▇▇▆▆▆▆▅▄▄▁▁▁▁▁▁▁▁▁▁▁4306.24339.14563.44347.54187.93760.83972.33894.23683.73320.13050.13063.82045.72063.82115.62082.42033.41983.61975.22073.62105.22041.11992.4NANANA2090.7NANANA2051.5NANANANANANANANANANANANANANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▇▇█▇▇▆▆▆▆▅▄▄▁▁▁4306.24339.14563.44347.54187.93760.83972.33894.23683.73320.13050.13063.82045.72063.82115.6NANANA1975.2NANANA1992.42024.62012.32109.92090.72104.52138.62144.72051.52009.12005.02172.42161.72204.52148.72131.82216.12220.12136.22116.52113.4NANA2113.4
us-gaap:AdditionalPaidInCapitalCommonStock █████████▇▇▇▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▂▂▂▂▂▂1770.91802.11805.21798.51792.51788.21819.21812.91806.41673.01666.31661.3681.5676.9673.1672.1666.9663.7660.3656.9654.6652.6654.0651.9657.1655.1660.1662.2671.3693.5694.8698.0709.1722.5725.0722.8729.7737.5743.9745.4744.2743.3751.1NANA751.1
us-gaap:RetainedEarningsAccumulatedDeficit ▇██▇▆▆▆▅▄▄▃▃▂▂▂▂▂▁▁▁▂▂▂▂▂▂▂▁▂▂▂▂▁▁▁▁▁▁▂▂▂▂▂1985.92140.02071.21993.51891.61791.21810.31704.51593.71489.71355.51365.11289.41264.91243.01218.81184.81160.71172.81155.51184.41192.71209.01218.61204.71189.31202.71155.61183.41231.51215.81184.41151.71158.01118.21130.81101.61126.21208.21200.51210.51225.61198.8NANA1198.8
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▅█▇▆▃▄▅▄▂▁▁▂▂▃▃▃▂▂▃▄▃▂▂▂▄▃▄▄▃▂▂▂▄▄▄▄▄▄▄▃▂▂543.0390.5680.5549.0497.3174.9336.1370.1276.9150.921.830.969.6116.9194.4186.4176.6154.1137.0256.1261.1190.7124.3149.0145.3260.3222.7281.4278.6214.2135.3121.1138.5286.1312.7345.1311.5262.1258.0268.1175.5141.6157.4NANA157.4
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▃█▂▃▃▄▂▃▃▄▂▃▂▁6.212.35.26.16.37.35.35.96.57.65.15.44.73.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▆█▂█▄▇▆▇▅█▇▆▄▅▄▄▄▄▄▄▅▄▅▄▃▃▃▃▃▃▃▂▅▁▄▂▄▂▂▁▄▂▃▃▃97.1140.6196.7-12.5201.562.3167.8130.0147.589.0193.9153.9117.474.076.160.555.748.370.053.639.777.247.486.951.729.034.226.835.537.129.216.3-4.781.3-33.942.91.155.6-14.9-31.3-52.073.2-1.710.224.525.5
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂█▃▂▄▆▄▆▄▄▆▁▆▅▄▅▇▅▅▅▅▅▅▅▅▆▅▆▆▄▅▆▆▅▄▆▇▄▅██▆▆▇▆▆-389.6311.7-287.7-392.5-170.894.0-252.232.4-193.9-219.719.1-584.970.2-2.0-155.9-74.1157.3-32.7-115.5-31.4-28.2-63.0-19.0-5.5-31.827.7-32.053.436.5-162.2-9.445.728.8-60.3-173.158.7154.9-146.7-120.0327.5288.568.632.3168.525.692.9
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▃█▄▄▅▂▄▆▁▂█▄▄▄▂▄▄▄▄▄▄▃▄▃▃▃▃▅▃▃▃▃▄▃▃▃▃▄▁▂▃▂▂▃-149.8-111.0-55.1367.957.38.287.6-133.243.8162.6-230.7-126.1346.9-2.3-12.1-9.7-172.1-11.3-9.9-10.9-12.1-15.5-13.8-28.1-13.8-45.1-19.2-48.9-75.2123.6-29.4-55.4-52.1-19.8-15.4-32.4-35.2-31.4-84.951.0-190.2-181.5-63.0-129.9-110.2-101.2
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▁█▄▅▆▆▅▅▅▅-442.3341.3-146.1-37.188.0164.53.229.2-2.631.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▃▁▁█▄▄▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▃▄▄▄▄▄▄▄▃▄▄▄▄▄▃▄▄▃▅▆▃▃▄-20.6-60.4-51.379.4-9.49.1-25.9-3.53.8-5.12.8-6.40.6-5.63.7-3.71.11.08.9-3.4-2.2-4.0-2.6-10.7-9.1-9.81.3-7.0-5.8-4.9-3.9-13.6-10.2-8.4-4.3-10.2-7.5-11.4-4.1-8.9-28.210.843.1-11.4-19.06.4
us-gaap:NetCashProvidedByUsedInOperatingActivities ▅▆█▂█▄▇▆▇▅█▇▆▄▅▄▄▄▄▄▄▅▄▅▄▃▃▃▃▃▃▃▂▅▁▄▂▄▂▂▁▄▂▃▃▃97.1140.6196.7-12.5201.562.3167.8130.0147.589.0193.9153.9117.474.076.160.555.748.370.053.639.777.247.486.951.729.034.226.835.537.129.216.3-4.781.3-33.942.91.155.6-14.9-31.3-52.073.2-1.710.224.525.5
us-gaap:NetIncomeLoss ▁▇▆▇▇▅▇▇▇█▃▆▄▅▄▅▄▃▄▂▃▃▃▄▄▃-62.6123.297.5122.3126.164.0124.7129.0122.1155.36.592.237.653.836.947.736.6-0.331.2-16.34.0-2.14.637.929.713.5NANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:AwardType kmpr:ParticipatingAwards▁█0.00.1NA0.10.10.1NA0.40.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome█▇▁▇▇▇▇▆▇▇▇▇▆▆▇▇▇▇▆▆▆▆▆▆█12.56.8-53.16.32.12.42.6-0.311.610.411.04.9-1.01.35.22.111.83.40.41.6-2.9-3.2-7.1-2.316.8NANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedDefinedBenefitPlansAdjustment██▁███████████████████▇▇▇0.0-0.8-53.1-0.7-0.6-0.61.80.00.10.4-0.2-0.2-0.3-0.20.20.00.10.1-0.4-0.2-1.8-1.6-3.8-3.7-3.9NANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges▆▆▅▆▇▆▄▆▇█▇▆▆▇▇▅▁▇▇▇▇-0.1-0.1-0.2-0.10.0-0.1-0.3-0.10.00.10.0-0.1-0.10.00.0-0.2-0.70.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:StatementEquityComponents us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome,us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss▆▄▂▄▃▃▂▂▅▅▅▃▂▂▃▃▆▃▂▂▂▁▁▂█12.67.70.27.12.73.11.1-0.211.59.911.25.2-0.61.55.02.312.43.30.81.8-1.1-1.6-3.31.420.7NANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock us-gaap:CommonStock▁█-62.6123.1NA122.2126.063.9NA128.6121.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings▁▇▆▇▇▅▇▇▇█▃▆▄▅-62.6123.297.5122.3126.164.0124.7129.0122.1155.36.592.237.653.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▂█▃▂▄▆▄▆▄▄▆▁▆▅▄▅▇▅▅▅▅▅▅▅▅▆▅▆▆▄▅▆▆▅▄▆▇▄▅██▆▆▇▆▆-389.6311.7-287.7-392.5-170.894.0-252.232.4-193.9-219.719.1-584.970.2-2.0-155.9-74.1157.3-32.7-115.5-31.4-28.2-63.0-19.0-5.5-31.827.7-32.053.436.5-162.2-9.445.728.8-60.3-173.158.7154.9-146.7-120.0327.5288.568.632.3168.525.692.9
us-gaap:PaymentsToAcquireProductiveAssets ▄▂▁▁▅▅█▆▅▂▂▅16.39.27.26.819.320.130.223.121.49.311.421.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▂▂▃█▄▄▅▂▄▆▁▂█▄▄▄▂▄▄▄▄▄▄▃▄▃▃▃▃▅▃▃▃▃▄▃▃▃▃▄▁▂▃▂▂▃-149.8-111.0-55.1367.957.38.287.6-133.243.8162.6-230.7-126.1346.9-2.3-12.1-9.7-172.1-11.3-9.9-10.9-12.1-15.5-13.8-28.1-13.8-45.1-19.2-48.9-75.2123.6-29.4-55.4-52.1-19.8-15.4-32.4-35.2-31.4-84.951.0-190.2-181.5-63.0-129.9-110.2-101.2
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA0.0NANANA0.049.9NANA0.4-0.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:LongtermDebtType us-gaap:SecuredDebtNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividends ▇█▆▆▆▇▅▂▂▂▁▁20.221.019.619.619.720.018.716.316.416.415.715.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Dividends ██▇▇▇▇▆▄▄▄▄▄▁20.421.019.819.719.720.218.916.716.416.415.715.812.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock █▄▁▁▂▇109.642.10.00.014.595.9NANANANANANANANA0.00.00.00.00.00.00.03.83.816.01.823.47.536.462.47.717.537.838.66.53.018.421.417.95.70.03.418.39.912.3NANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31

Shares Issued

us-gaap:SharesIssued us-gaap:StatementEquityComponents

us-gaap:SharesIssued

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value63656565656566666664646451515151515255586061626264
Percentage of SharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value64666666666766656552515151515151515151515254555657585859596060606162
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value64656565666665646451515151515151515151515254555657585859596060606161
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value2.19041.21280.87610.9150.82890.54470.54170.57450.04720.50420.32960.38210.58441.30511.00951.37741.18730.83390.93221.24411.83051.54131.250121252.22.277225292.8
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EmployeeStockOption


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-30
Value2.19041.21280.87610.9150.82890.54470.54170.57450.04720.50420.32960.38210.58441.30511.00951.37741.18730.83390.93221.24411.83051.54131.250121252.17892.27722529
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.099.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.971.881.491.871.930.961.871.931.872.380.11.420.731.030.710.920.71-0.010.6-0.320.08-0.040.090.730.570.261.240.090.170.630.991.240.591.00.030.950.040.730.420.08-0.010.891.030.580.610.77
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.971.851.461.831.910.951.851.911.842.350.11.40.731.020.710.920.71-0.010.6-0.320.08-0.040.090.730.570.261.240.090.170.630.991.230.591.00.030.950.040.720.420.08-0.010.891.030.580.610.77
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Allocated Share Based Compensation Expense

us-gaap:AllocatedShareBasedCompensationExpense us-gaap:AwardType, us-gaap:PlanName

us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:EmployeeStockOption, kmpr:EmployeeStockPurchasePlan


Allocated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-30
Value0.20.20.20.20.20.10.1
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:EmployeeStockOption kmpr:EmployeeStockPurchasePlan0.00.00.00.00.00.00.0

Benefits Losses And Expenses

us-gaap:BenefitsLossesAndExpenses

us-gaap:BenefitsLossesAndExpenses


Benefits
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-30
Value159712301201107111511082112610411115696
Percentage of BenefitsLossesAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues105.991.088.887.093.787.088.484.393.393.9

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value89-166.8229174448-97.290222248284-2.753-9.7-41.944575916-87.9-21.37464-20.141-85.351
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.0-12.316.412.936.4-7.97.117.919.523.0-0.24.5-1.3-6.06.48.38.62.6-13.7-3.311.910.5-3.36.8-14.010.2

Income Loss From Continuing Operations

us-gaap:IncomeLossFromContinuingOperations

us-gaap:IncomeLossFromContinuingOperations


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value97122126641241291221555.0923753354736-0.429-18.34.1-2.21.3382713
Percentage of IncomeLossFromContinuingOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues7.09.010.25.29.710.49.612.60.57.75.17.75.16.95.3-0.14.5-2.90.7-0.40.26.24.52.7

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312011-12-312011-09-302011-06-302011-03-31
Value120152159771561611481946.1804567446852-3.540-33.22.6-6.5-1.6493417934.0115181102468432-0.8-16.667
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues8.711.213.06.312.213.011.615.70.66.76.19.76.39.97.6-0.56.3-5.20.4-1.1-0.38.15.63.616.60.72.19.413.916.07.913.75.3-0.1-2.510.2

Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value159.80.400000000000001859.03.53.91.2-0.21412146.5-0.71.97.63.6195.11.12.9-1.7-2.5-5.22.331-3.6174.3-0.74.413-0.41.2242.650
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.10.70.00.70.30.30.1-0.01.11.01.30.5-0.10.31.10.52.80.80.20.5-0.3-0.4-0.80.45.2-0.73.10.8-0.10.82.2-0.10.23.90.47.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value-27.1-1.623293313323226391.1-11.88.0138.32015-3.111-14.9-1.5-4.3-2.9116.94.329-0.81.91626331326-4.325-5.1146.6-4.6-7.32320141619
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-1.8-0.11.72.22.71.12.52.62.13.20.1-1.01.11.91.23.02.3-0.51.8-2.3-0.2-0.7-0.51.91.10.95.3-0.10.43.04.55.32.44.2-0.74.0-0.82.31.1-0.8-1.13.63.12.22.52.8

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Income
Period End2021-06-302021-03-31
Value0.90.2
Percentage of IncomeTaxExpenseBenefit-3.3-12.5
Percentage of Revenues0.10.0
Percentage of Revenues us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.10.5-14.80.20.1-0.10.60.0-0.10.2-0.10.00.0-0.10.00.10.10.0-0.2-0.2-0.9-1.0-2.0-2.1-2.2-1.7-0.7-0.7-0.7-0.7-2.3-2.3-2.3-1.9-1.4-1.6
Percentage of IncomeTaxExpenseBenefit-0.4-31.2-64.10.70.3-0.71.90.0-0.40.5-9.1-0.00.0-0.70.00.50.6-0.0-1.71.360.023.369.0-17.8-31.9-39.5-2.387.5-36.8-4.2-8.6-6.9-16.5-7.332.6-6.2
Percentage of Revenues0.00.0-1.10.00.0-0.00.00.0-0.00.0-0.00.00.0-0.00.00.00.00.0-0.0-0.0-0.1-0.2-0.3-0.3-0.4-0.3-0.1-0.1-0.1-0.1-0.4-0.4-0.4-0.3-0.2-0.2
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Income
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-0.10.00.0-0.10.00.00.00.0-0.10.1-0.10.00.0-0.40.00.00.00.0
Percentage of IncomeTaxExpenseBenefit-0.30.00.0-0.30.00.00.00.00.81.2-0.70.00.0-2.6-0.00.0-0.0-0.0
Percentage of Revenues-0.00.00.0-0.00.00.00.00.0-0.00.0-0.00.00.0-0.10.00.00.00.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.32.10.21.90.80.80.10.03.12.63.01.3-0.10.42.61.36.61.80.31.1-0.6-0.9-1.90.911-1.36.01.5-0.21.54.5-0.10.48.40.917
Percentage of IncomeTaxExpenseBenefit-12.2-131.20.96.42.45.80.30.011.76.6272.7-11.0-1.23.031.36.342.6-58.12.6-7.440.020.965.57.6162.3-30.220.1-187.5-10.59.016.9-0.32.932.3-20.968.7
Percentage of Revenues0.20.20.00.10.10.10.00.00.20.20.30.1-0.00.10.40.21.00.30.00.2-0.1-0.1-0.30.11.8-0.31.10.3-0.00.30.8-0.00.11.40.22.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-312016-09-302013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-30
Value7.9300.6541.00.1159.6420.0-10.09.8-4.24.67.52.5-10.90.00.1390.20.6262.40.1
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.52.20.04.00.10.01.20.83.30.0-0.90.8-0.60.71.10.4-1.70.00.06.70.00.14.30.40.0

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value1111118.38.97.510.09.2111114137.98.08.07.88.21011111111
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.70.80.80.60.70.60.80.70.90.91.31.11.11.21.11.11.21.71.71.71.81.8

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:InterestIncomeExpenseNet

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-100000.0-300000.0-67900000.0-900000.0-700000.0-700000.02400000.000600000.0-300000.0-200000.0-300000.0
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0
Percentage of Revenues-0.0-0.0-4.9-0.1-0.1-0.10.20.00.00.0-0.0-0.0-0.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-100000.0-100000.0-100000.0-200000.00-100000.0-400000.0-100000.00100000.00-200000.00
Percentage of InterestIncomeExpenseNet100.033.30.122.2-0.014.3-16.70.00.016.7-0.0100.0-0.0
Percentage of Revenues-0.0-0.0-0.0-0.00.0-0.0-0.0-0.00.00.00.0-0.00.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-62.612397122126641241291221556.5923753364736-0.331-16.34.0-2.14.6372913
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.29.17.09.010.25.29.710.49.612.60.67.75.17.85.36.95.3-0.04.9-2.50.6-0.30.76.24.92.7

us-gaap:NetIncomeLoss us-gaap:AwardType

kmpr:ParticipatingAwards


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.00.10.10.10.10.40.3
Percentage of NetIncomeLoss-0.00.10.10.10.20.30.2
Percentage of Revenues0.00.00.00.00.00.00.0
Percentage of Revenues kmpr:ParticipatingAwards0.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value126.8-53.16.32.12.42.6-0.31110114.9-1.01.35.22.1113.40.41.6-2.9-3.2-7.1-2.316
Percentage of NetIncomeLoss-20.05.5-54.55.21.73.82.1-0.29.56.7169.25.3-2.72.414.14.432.2-1133.31.3-9.8-72.5152.4-154.3-6.156.6
Percentage of Revenues0.80.5-3.80.50.20.20.2-0.00.90.81.00.4-0.10.20.70.31.70.50.10.2-0.5-0.5-1.2-0.42.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value0.0-0.8-53.1-0.7-0.6-0.61.80.00.10.4-0.2-0.2-0.3-0.20.20.00.10.1-0.4-0.2-1.8-1.6-3.8-3.7-3.9
Percentage of NetIncomeLoss-0.0-0.6-54.5-0.6-0.5-0.91.40.00.10.3-3.1-0.2-0.8-0.40.50.00.3-33.3-1.31.2-45.076.2-82.6-9.8-13.1
Percentage of Revenues0.0-0.1-3.8-0.1-0.0-0.00.10.00.00.0-0.0-0.0-0.0-0.00.00.00.00.0-0.1-0.0-0.3-0.3-0.6-0.6-0.6
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-0.1-0.1-0.2-0.10.0-0.1-0.3-0.10.00.10.0-0.1-0.10.00.0-0.2-0.70.00.00.00.0
Percentage of NetIncomeLoss0.2-0.1-0.2-0.10.0-0.2-0.2-0.10.00.10.0-0.1-0.30.00.0-0.4-1.9-0.00.0-0.00.0
Percentage of Revenues-0.0-0.0-0.0-0.00.0-0.0-0.0-0.00.00.00.0-0.0-0.00.00.0-0.0-0.10.00.00.00.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value127.70.27.12.73.11.1-0.2119.9115.2-0.61.55.02.3123.30.81.8-1.1-1.6-3.31.420
Percentage of NetIncomeLoss-20.16.20.25.82.14.80.9-0.29.46.4172.35.6-1.62.813.64.833.9-1100.02.6-11.0-27.576.2-71.73.769.7
Percentage of Revenues0.80.60.00.50.20.30.1-0.00.90.81.00.4-0.10.20.70.31.80.50.10.3-0.2-0.3-0.50.23.4
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock

us-gaap:CommonStock


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-62.612312212663128121
Percentage of NetIncomeLoss100.099.999.999.999.899.799.8
Percentage of Revenues-4.29.19.010.25.210.39.5
Percentage of Revenues us-gaap:CommonStock0.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-62.612397122126641241291221556.5923753
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.29.17.09.010.25.29.710.49.612.60.67.75.17.8
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted

us-gaap:NetIncomeLossAvailableToCommonStockholdersDiluted


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-62.612312212663128121
Percentage of NetIncomeLossAvailableToCommonStockholdersDiluted100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.29.19.010.25.210.39.5

Net Investment Income

us-gaap:NetInvestmentIncome

us-gaap:NetInvestmentIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value11310310292678593919682919278798285778179777367797576709372727176827480727075777558838184798180
Percentage of NetInvestmentIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues7.67.67.46.85.57.07.37.47.56.78.37.710.611.411.812.411.312.512.412.111.811.012.912.312.614.116.613.413.412.813.113.012.713.112.210.912.412.712.39.912.612.412.612.211.911.6

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

us-gaap:OperatingSegments, kmpr:LifeAndHealthInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value525152504451524953515350545357555453535450555555535071494850505649
Percentage of NetInvestmentIncome46.049.651.455.065.359.655.454.255.262.558.154.969.067.369.965.171.265.067.170.168.082.169.572.669.871.476.668.066.170.665.868.666.8
Percentage of Revenues3.53.83.83.73.64.14.14.04.24.24.84.27.37.78.38.18.08.18.38.58.09.08.99.08.810.112.79.18.89.18.68.98.5
Percentage of Revenues us-gaap:OperatingSegments kmpr:LifeAndHealthInsurance24.424.50.024.021.323.80.023.324.524.30.024.125.525.50.026.526.325.70.026.324.826.80.026.726.225.90.024.323.924.40.026.223.9

us-gaap:OperatingSegments, kmpr:PreferredPropertyCasualtyInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value191513104.39.71112128.314201413
Percentage of NetInvestmentIncome17.115.413.011.26.311.312.213.112.810.015.321.817.917.3
Percentage of Revenues1.31.21.00.80.30.80.91.01.00.71.31.71.92.0
Percentage of Revenues us-gaap:OperatingSegments kmpr:PreferredPropertyCasualtyInsurance10.89.10.05.62.65.10.05.96.14.30.09.87.27.2

us-gaap:OperatingSegments, kmpr:SpecialtyPropertyCasualtyInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value42353730162828282821222010
Percentage of NetInvestmentIncome37.533.936.933.124.933.630.131.430.126.024.822.513.0
Percentage of Revenues2.82.62.72.31.42.32.22.32.31.72.11.71.4
Percentage of Revenues us-gaap:OperatingSegments kmpr:SpecialtyPropertyCasualtyInsurance4.13.90.03.42.23.40.03.53.62.90.02.83.1

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1271120110711151112610821126104110881115696626653622632654602673624617618565574481466535531502504533542531602564612560580593669578594603628628
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues91.388.887.093.787.887.088.484.399.493.393.990.393.790.192.4100.593.7105.299.6101.1100.391.994.496.483.499.397.990.686.184.092.186.3101.087.4100.691.894.7100.1101.387.988.692.891.890.5

Operating Income Loss

us-gaap:OperatingIncomeLoss

us-gaap:OperatingIncomeLoss


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-136.17513111210020212216310912375954470366328-9.040-36.53.4-4.03.7472.53078-0.2114668564559-8.733-7.246318.4-37.4495244
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-9.05.69.48.38.216.59.613.18.610.06.98.06.110.25.29.14.1-1.46.3-5.70.5-0.70.67.80.46.114.0-0.02.28.311.68.97.79.7-1.55.2-1.27.55.11.4-5.77.57.86.8

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-13.8-11.5-9.7-11.0-4.778-7.3-3.17.7-8.6-21.928-6.7-4.0-3.0-3.7-7.1-4.4-2.1-6.4-4.7-12.2-12.7-12.6-11.3-12.3-8.6-7.7-8.6-7.8-12.0-11.1-11.7
Percentage of OperatingIncomeLoss10.1-15.2-7.4-9.8-4.738.6-5.9-1.97.0-7.0-29.229.9-14.9-5.7-8.2-5.9-25.148.9-5.217.5-138.2305.0-343.2-26.4-452.0-40.3-10.93850.0-72.9-16.9-17.6-19.7-25.9
Percentage of Revenues-0.9-0.9-0.7-0.8-0.46.4-0.6-0.20.6-0.7-2.02.4-0.9-0.6-0.4-0.5-1.0-0.7-0.3-1.0-0.7-2.0-2.1-2.0-1.9-2.5-1.5-1.4-1.6-1.4-2.0-1.7-2.0
Percentage of Revenues us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-122.38714012310512413016610113296675174396635-4.642-30.18.18.216601342877.52053806756
Percentage of OperatingIncomeLoss89.9115.2107.4109.8104.761.4105.9101.993.0107.0129.270.1114.9105.7108.2105.9125.151.1105.282.5238.2-205.0443.2126.4552.0140.3110.9-3750.0172.9116.9117.6119.7125.9
Percentage of Revenues-8.16.510.19.18.510.110.113.48.010.78.95.67.010.75.79.75.2-0.76.6-4.71.31.32.79.82.38.615.61.43.89.713.710.69.6
Percentage of Revenues us-gaap:OperatingSegments-8.56.80.09.59.19.90.013.58.411.40.05.97.010.80.09.85.4-0.70.0-4.71.31.30.09.92.48.60.01.43.89.90.011.59.7

us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, kmpr:LifeAndHealthInsurance


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value13-0.89.615192635411629193333293836313235-45.725312735222451312434383531
Percentage of OperatingIncomeLoss-9.7-1.17.313.519.813.128.925.214.723.726.134.474.442.5106.057.1110.2-362.287.3125.2744.1-775.0737.874.1888.081.365.1-15700.0209.375.156.662.569.2
Percentage of Revenues0.9-0.10.71.11.62.22.83.31.32.41.82.84.54.35.55.24.65.05.5-7.14.05.14.45.83.65.09.15.84.66.26.65.55.3
Percentage of Revenues us-gaap:OperatingSegments kmpr:LifeAndHealthInsurance6.1-0.40.07.29.612.40.019.27.413.80.015.815.814.30.017.014.915.80.0-22.112.515.10.017.210.912.70.015.512.316.80.016.314.9

us-gaap:OperatingSegments, kmpr:PreferredPropertyCasualtyInsurance


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
Value-13.43.019-41.80.82316266.43.36.614-8.716
Percentage of OperatingIncomeLoss9.84.015.1-37.20.811.313.116.35.82.78.814.7-19.423.6
Percentage of Revenues-0.90.21.4-3.10.11.91.32.10.50.30.61.2-1.22.4
Percentage of Revenues us-gaap:OperatingSegments kmpr:PreferredPropertyCasualtyInsurance-7.41.70.0-22.60.512.10.013.13.21.70.06.9-4.58.7

us-gaap:OperatingSegments, kmpr:SpecialtyPropertyCasualtyInsurance


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
Value-122.18511114984757898799961262829
Percentage of OperatingIncomeLoss89.7112.385.0133.584.137.063.960.572.480.682.028.162.841.2
Percentage of Revenues-8.16.38.011.16.96.16.17.96.28.05.62.33.84.2
Percentage of Revenues us-gaap:OperatingSegments kmpr:SpecialtyPropertyCasualtyInsurance-11.69.40.016.610.98.80.012.110.013.20.03.78.50.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value152-290.013151322-161.2-34.093126129-9.2-38.6-47.3-95.78.09.82217-119.1-5.07066-24.73.7-115.037-58.72.8647814-17.4-147.6-26.6-32.433494.1-10.19233
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.1-21.49.43.826.2-13.1-2.67.59.910.4-0.8-3.2-6.4-13.81.11.43.32.6-18.5-0.811.210.9-4.00.6-18.97.5-10.50.511.914.22.4-2.7-25.1-4.3-5.45.28.10.7-1.615.65.1

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value152-290.013151322-161.2-34.093126129-9.2-38.6-47.3-95.7
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.1-21.49.43.826.2-13.1-2.67.59.910.4-0.8-3.2-6.4-13.8
Percentage of Revenues us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Income

us-gaap:OtherIncome

us-gaap:OtherIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7.01.51.90.91.5903.77.2221.92.0371.21.21.11.01.00.91.00.80.60.81.40.80.60.90.60.50.20.10.30.10.20.20.20.20.20.20.20.40.20.20.30.40.30.3
Percentage of OtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.50.10.10.10.17.30.30.61.80.20.23.20.20.20.20.10.10.10.20.10.10.10.20.10.10.20.10.10.00.00.10.00.00.00.00.00.00.00.00.10.00.00.00.10.00.0

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

us-gaap:OperatingSegments, kmpr:LifeAndHealthInsurance


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value0.10.10.00.00.50.12.92.91.61.11.11.20.90.80.70.70.60.60.90.70.60.60.70.70.20.80.50.40.00.00.10.00.1
Percentage of OtherIncome1.46.70.00.033.30.178.440.37.057.955.03.275.066.763.670.060.066.790.087.5100.075.050.087.533.388.983.380.00.00.033.30.050.0
Percentage of Revenues0.00.00.00.00.00.00.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.20.10.10.00.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments kmpr:LifeAndHealthInsurance0.00.00.00.00.20.00.01.40.70.50.00.60.40.40.00.30.30.30.00.30.30.30.00.30.10.40.00.20.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:PreferredPropertyCasualtyInsurance


Other
Period End2020-12-312020-09-302020-06-302019-06-30
Value0.10.00.10.0
Percentage of OtherIncome5.30.06.70.0
Percentage of Revenues0.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments kmpr:PreferredPropertyCasualtyInsurance0.00.00.10.0

us-gaap:OperatingSegments, kmpr:SpecialtyPropertyCasualtyInsurance


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1.00.90.40.40.10.90.84.41.00.80.80.90.4
Percentage of OtherIncome14.360.021.144.46.71.021.661.14.442.140.02.433.3
Percentage of Revenues0.10.10.00.00.00.10.10.40.10.10.10.10.1
Percentage of Revenues us-gaap:OperatingSegments kmpr:SpecialtyPropertyCasualtyInsurance0.10.10.00.00.00.10.00.50.10.10.00.10.1

Premiums Earned Net

us-gaap:PremiumsEarnedNet

us-gaap:PremiumsEarnedNet


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value133712001214120610851166114511351116107410631052658609605598582563561558553546541536500431451462470477495507512509520527529529536543548546561568578581
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues88.788.887.289.188.294.989.391.387.586.997.288.188.788.086.986.785.186.587.487.288.389.387.887.282.186.480.785.786.786.184.679.887.182.887.381.787.086.687.591.683.083.183.787.384.483.7

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

us-gaap:OperatingSegments, kmpr:AccidentalandHealth, kmpr:LifeAndHealthInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4747504850494847474645444343
Percentage of PremiumsEarnedNet3.63.94.14.14.74.24.24.24.34.44.34.36.77.1
Percentage of Revenues3.23.53.63.64.14.03.83.83.83.84.23.85.96.2
Percentage of Revenues us-gaap:OperatingSegments kmpr:AccidentalandHealth kmpr:LifeAndHealthInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:CommercialAutomobile, kmpr:SpecialtyPropertyCasualtyInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10092867969696664625957551212
Percentage of PremiumsEarnedNet7.57.77.16.66.45.95.85.75.65.65.45.31.92.0
Percentage of Revenues6.76.86.25.95.65.65.25.24.94.85.24.71.71.8
Percentage of Revenues us-gaap:OperatingSegments kmpr:CommercialAutomobile kmpr:SpecialtyPropertyCasualtyInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:Homeowners, kmpr:PreferredPropertyCasualtyInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value51505355555658616060636262
Percentage of PremiumsEarnedNet3.84.24.44.65.14.95.15.45.45.66.05.99.5
Percentage of Revenues3.43.83.84.14.54.64.64.94.84.95.85.28.4
Percentage of Revenues us-gaap:OperatingSegments kmpr:Homeowners kmpr:PreferredPropertyCasualtyInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:Life, kmpr:LifeAndHealthInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value10098969695979596979594959593
Percentage of PremiumsEarnedNet7.58.27.98.08.88.38.38.58.78.98.89.014.515.4
Percentage of Revenues6.77.36.97.17.87.97.47.77.67.78.68.012.913.5
Percentage of Revenues us-gaap:OperatingSegments kmpr:Life kmpr:LifeAndHealthInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:OtherPersonalLines, kmpr:PreferredPropertyCasualtyInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value8.48.48.88.98.99.29.39.89.89.910.0101010
Percentage of PremiumsEarnedNet0.60.70.70.70.80.80.80.90.90.90.91.01.51.7
Percentage of Revenues0.60.60.60.70.70.70.70.80.80.80.90.81.41.5
Percentage of Revenues us-gaap:OperatingSegments kmpr:OtherPersonalLines kmpr:PreferredPropertyCasualtyInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:PreferredAutomobile, kmpr:PreferredPropertyCasualtyInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value10310310711099114117119117115115111108
Percentage of PremiumsEarnedNet7.78.68.89.29.19.910.210.510.610.710.810.616.5
Percentage of Revenues6.97.67.78.28.19.39.19.69.29.310.59.314.7
Percentage of Revenues us-gaap:OperatingSegments kmpr:PreferredAutomobile kmpr:PreferredPropertyCasualtyInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:Property, kmpr:LifeAndHealthInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1515151516161617171717171717
Percentage of PremiumsEarnedNet1.21.31.31.31.51.41.51.51.51.61.61.72.72.9
Percentage of Revenues1.01.11.11.11.31.31.31.41.31.41.61.52.42.5
Percentage of Revenues us-gaap:OperatingSegments kmpr:Property kmpr:LifeAndHealthInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, kmpr:SpecialtyAutomobile, kmpr:SpecialtyPropertyCasualtyInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value909785796792689753733719703669660655307266
Percentage of PremiumsEarnedNet68.065.465.665.763.664.664.063.463.062.362.162.246.743.7
Percentage of Revenues60.358.157.258.556.061.357.157.855.254.260.354.841.438.4
Percentage of Revenues us-gaap:OperatingSegments kmpr:SpecialtyAutomobile kmpr:SpecialtyPropertyCasualtyInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, kmpr:LifeAndHealthInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value164161162160162163160160162159157157157154153154153153152152151149149150150143151153152155157158158
Percentage of PremiumsEarnedNet12.313.413.413.315.014.014.014.214.514.914.815.023.925.425.325.926.327.227.127.227.327.427.628.130.133.333.633.132.532.531.831.331.0
Percentage of Revenues10.911.911.711.913.213.312.512.912.712.914.313.221.222.321.922.422.423.523.723.724.124.524.224.524.728.827.128.428.228.026.925.027.0
Percentage of Revenues us-gaap:OperatingSegments kmpr:LifeAndHealthInsurance76.577.30.076.078.476.10.075.474.875.20.075.374.174.10.073.273.474.10.073.474.972.90.073.073.773.70.075.576.175.60.073.876.1

us-gaap:OperatingSegments, kmpr:PreferredPropertyCasualtyInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value163162169174163180185191188185188184181176
Percentage of PremiumsEarnedNet12.213.513.914.515.115.516.216.816.917.317.817.527.529.0
Percentage of Revenues10.812.012.212.913.314.714.415.414.815.017.215.424.425.5
Percentage of Revenues us-gaap:OperatingSegments kmpr:PreferredPropertyCasualtyInsurance90.393.20.094.497.494.90.094.193.995.70.090.292.892.8

us-gaap:OperatingSegments, kmpr:SpecialtyPropertyCasualtyInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1010877882871759822799783766729717711320
Percentage of PremiumsEarnedNet75.573.172.772.269.970.569.869.068.667.967.567.548.6
Percentage of Revenues67.064.963.464.461.766.962.363.060.159.065.659.543.1
Percentage of Revenues us-gaap:OperatingSegments kmpr:SpecialtyPropertyCasualtyInsurance96.296.80.096.697.896.50.095.996.297.00.097.196.8

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
Value150713521392135312301229128312431275123610941195741693697690684651642640627611617615609499559539542554586635588615596645608611613592660657670650684694
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value144512881318129811511256124112331213115811641139736686686683658641636634624613619610572497540531538545569585584
Percentage of Revenues95.995.394.795.993.5102.396.799.195.193.7106.495.399.399.198.498.996.398.499.099.099.5100.4100.399.394.099.796.698.499.298.497.292.199.2
Percentage of Revenues95.995.394.795.993.5102.396.799.195.193.7106.495.399.399.198.498.996.398.499.099.099.5100.4100.399.394.099.796.698.499.298.497.292.199.2
Percentage of Revenues us-gaap:OperatingSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, kmpr:LifeAndHealthInsurance


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value214208215211207214215213216212211209212208211211208206206207201205205206204194223202200205208215208
Percentage of Revenues14.215.415.515.616.917.416.817.217.017.219.317.528.630.130.330.630.531.732.232.332.233.633.333.533.639.039.937.637.037.135.533.935.5
Percentage of Revenues14.215.415.515.616.917.416.817.217.017.219.317.528.630.130.330.630.531.732.232.332.233.633.333.533.639.039.937.637.037.135.533.935.5
Percentage of Revenues us-gaap:OperatingSegments kmpr:LifeAndHealthInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, kmpr:PreferredPropertyCasualtyInsurance


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value180174182184168190196203200193202204195190
Percentage of Revenues12.012.913.113.713.615.515.316.315.715.718.517.126.327.5
Percentage of Revenues12.012.913.113.713.615.515.316.315.715.718.517.126.327.5
Percentage of Revenues us-gaap:OperatingSegments kmpr:PreferredPropertyCasualtyInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, kmpr:SpecialtyPropertyCasualtyInsurance


Revenuesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1050906920902776852828816795751741732330
Percentage of Revenues69.767.066.166.763.069.364.665.762.460.867.761.344.6
Percentage of Revenues69.767.066.166.763.069.364.665.762.460.867.761.344.6
Percentage of Revenues us-gaap:OperatingSegments kmpr:SpecialtyPropertyCasualtyInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value149501420314341140901348912932129891281912616121821154411772884083718376830182118306821083908305816980368075805578857833790579697944765677457820805680098120800679708085820081818230835883588573
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value5672465238562852
Percentage of Assets39.635.833.434.1
Percentage of Assets39.635.833.434.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-31
Value355423682805
Percentage of Assets24.818.224.3
Percentage of Assets24.818.224.3
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

kmpr:LifeAndHealthInsurance


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value64575847511750794888473348104545478149264602
Percentage of Assets45.045.044.360.659.558.961.459.459.760.955.1
Percentage of Assets45.045.044.360.659.558.961.459.459.760.955.1
Percentage of Assets kmpr:LifeAndHealthInsurance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:PreferredPropertyCasualtyInsurance


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value1711154915671567
Percentage of Assets11.911.913.618.7
Percentage of Assets11.911.913.618.7
Percentage of Assets kmpr:PreferredPropertyCasualtyInsurance100.0100.0100.0100.0

kmpr:SpecialtyPropertyCasualtyInsurance


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value4897443535411327
Percentage of Assets34.134.130.715.8
Percentage of Assets34.134.130.715.8
Percentage of Assets kmpr:SpecialtyPropertyCasualtyInsurance100.0100.0100.0100.0

us-gaap:CorporateAndOther


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-31
Value127611561319
Percentage of Assets8.98.911.4
Percentage of Assets8.98.911.4
Percentage of Assets us-gaap:CorporateAndOther100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value1064498649778974293019171901689258932886284948708679463076260621861786323623563166200612860436051604257755742580058315799560457365815588358475916585858385869598060456113624562456655
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets71.269.568.269.169.070.969.469.670.872.773.674.076.975.374.774.975.276.175.975.374.775.075.274.975.073.273.373.473.273.073.274.174.473.073.072.973.273.372.672.973.974.374.774.777.6

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value1109680806737
Percentage of Liabilities11.37.59.511.8
Percentage of Assets7.75.27.08.8
Percentage of Assets srt:ParentCompany19.614.620.925.8

us-gaap:Liabilities us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-31
Value16028171030
Percentage of Liabilities16.49.112.1
Percentage of Assets11.26.38.9
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees45.134.536.7

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value149501420314341140901348912932129891281912616121821154411772884083718376830182118306821083908305816980368075805578857833790579697944765677457820805680098120800679708085820081818230835883588573
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value5672465238562852
Percentage of LiabilitiesAndStockholdersEquity39.635.833.434.1
Percentage of Assets39.635.833.434.1
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value4306433945634347418737603972389436833320305030632045206321152082203319831975207321052041199220902051
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.830.531.830.931.029.130.630.429.227.326.426.023.124.725.325.124.823.924.124.725.325.024.826.726.8

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4563397230502115
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets31.830.626.425.3
Percentage of Assets srt:ParentCompany80.485.479.174.2

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value-44.9-44.9-45.7-98.8-99.5-100.1-100.6-94.5-89.2
Percentage of StockholdersEquity-1.0-1.0-1.0-2.3-2.4-2.7-2.5-3.1-4.2
Percentage of Assets-0.3-0.3-0.3-0.7-0.7-0.8-0.8-0.8-1.1
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value-2.1-2.2-2.3-2.5-2.6-2.6-2.7-3.0-4.0
Percentage of StockholdersEquity-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value594441730652602279439119306
Percentage of StockholdersEquity13.810.216.015.014.47.411.13.914.5
Percentage of Assets4.03.15.14.64.52.23.41.03.7
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value54339068054949717433621212137124222135
Percentage of StockholdersEquity12.69.014.912.611.94.78.50.710.06.96.210.76.6
Percentage of Assets3.62.74.73.93.71.42.60.22.51.71.52.81.8
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-4.0-3.8-2.1-1.9-2.9-2.30.0
Percentage of StockholdersEquity-0.1-0.1-0.0-0.0-0.1-0.10.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.00.0
Percentage of Assets us-gaap:AccumulatedOtherThanTemporaryImpairment0.00.00.00.00.00.00.0

Cash

us-gaap:Cash

us-gaap:Cash


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value105547206352389301136133104107759264911545137160120115171159160161147938776936165667669979631824912825147112377117149100117143184
Percentage of Cash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.73.91.42.52.92.31.11.00.80.90.70.87.41.40.51.72.01.41.42.01.92.02.01.81.21.11.01.20.80.80.91.00.91.21.23.93.11.63.15.71.50.91.40.00.01.41.70.0

us-gaap:Cash us-gaap:ConsolidatedEntities

srt:ParentCompany


Cashus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value46612.98.41515
Percentage of Cash22.345.23.918.413.69.8
Percentage of Assets0.30.50.00.10.20.2
Percentage of Assets srt:ParentCompany0.81.30.10.30.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Cash
Period End2021-06-302021-03-31
Value337.2
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0
Percentage of Assets0.20.1
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value1055472063523893011361331041077545
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.73.91.42.52.92.31.11.00.80.90.70.5

Short Term Investments

us-gaap:ShortTermInvestments us-gaap:ConsolidatedEntities

us-gaap:ShortTermInvestments

srt:ParentCompany


Short
Period End2020-12-312019-12-312018-12-31
Value5088964
Percentage of ShortTermInvestments100.0100.0100.0
Percentage of Assets3.50.70.6
Percentage of Assets srt:ParentCompany9.01.91.7

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Property
Period End2021-06-302021-03-31
Value12154
Percentage of PropertyPlantAndEquipmentNet100.0100.0
Percentage of Assets0.80.4
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.0

Investments In Affiliates Subsidiaries Associates And Joint Ventures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures


Investments
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value225206209226220213219197187170170168161160152157175181182190190179173168184222227239245231241248253267283311306305325326328328285
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.61.51.61.71.71.71.71.61.61.41.92.01.91.91.91.92.12.22.22.32.42.22.22.12.42.82.83.03.23.03.13.13.23.33.53.93.83.74.04.03.93.93.3

us-gaap:InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures us-gaap:ConsolidatedEntities

srt:ParentCompany


Investments
Period End2020-12-312019-12-312018-12-312017-12-31
Value4896438337362646
Percentage of InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures2173.11989.01997.91643.5
Percentage of Assets34.133.732.431.6
Percentage of Assets srt:ParentCompany86.394.296.992.7

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value131111141114111411141114111411141114111111121091323323323323323323323323323323323323318311311311311311311311311311311311311311311311311311311311331
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets8.87.87.87.98.38.68.68.78.89.19.69.33.73.93.93.93.93.93.93.83.94.04.04.04.04.04.03.93.93.94.14.04.03.93.93.83.93.93.93.83.83.83.73.73.9

us-gaap:Goodwill us-gaap:StatementBusinessSegments

kmpr:LifeAndHealthInsurance


Goodwillus-gaap:
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
Value219219219219219219219219219219219239
Percentage of Goodwill19.719.719.767.967.967.970.470.470.470.470.472.2
Percentage of Assets1.51.71.92.62.72.72.82.92.72.72.62.8
Percentage of Assets kmpr:LifeAndHealthInsurance3.43.84.34.34.54.64.64.84.64.54.80.0

kmpr:SpecialtyPropertyCasualtyInsurance


Goodwillus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value84584584354
Percentage of Goodwill75.975.975.816.7
Percentage of Assets5.96.57.30.6
Percentage of Assets kmpr:SpecialtyPropertyCasualtyInsurance17.319.123.84.1

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-31
Value47474739
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0
Percentage of Assets0.30.40.40.5

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:LicensingAgreements


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-31
Value42424234
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill89.189.189.186.9
Percentage of Assets0.30.30.40.4
Percentage of Assets us-gaap:LicensingAgreements0.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2020-12-312019-12-31
Value320328
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0
Percentage of Assets2.22.5

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value272280261133
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0
Percentage of Assets1.92.22.31.6

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

kmpr:AgentRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value57626815
Percentage of FiniteLivedIntangibleAssetsNet21.222.326.111.7
Percentage of Assets0.40.50.60.2
Percentage of Assets kmpr:AgentRelationships0.00.00.00.0

kmpr:ValueofBusinessAcquired


Finite
Period End2020-12-312019-12-31
Value2024
Percentage of FiniteLivedIntangibleAssetsNet7.58.6
Percentage of Assets0.10.2
Percentage of Assets kmpr:ValueofBusinessAcquired0.00.0

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value19118914982
Percentage of FiniteLivedIntangibleAssetsNet70.167.657.162.2
Percentage of Assets1.31.51.31.0
Percentage of Assets us-gaap:ComputerSoftwareIntangibleAsset0.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.44.36.77.3
Percentage of FiniteLivedIntangibleAssetsNet1.21.52.65.5
Percentage of Assets0.00.00.10.1
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value77666870718275
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.50.50.50.50.50.60.6

us-gaap:OperatingLeaseRightOfUseAsset us-gaap:ConsolidatedEntities

srt:ParentCompany


Operating
Period End2020-12-312019-12-312018-12-31
Value13180.0
Percentage of OperatingLeaseRightOfUseAsset19.524.60.0
Percentage of Assets0.10.10.0
Percentage of Assets srt:ParentCompany0.20.40.0

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-06-302017-12-312016-12-31
Value957897858788783709907-64.35140.00.0
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0
Percentage of Assets6.46.36.05.65.85.57.0-0.65.80.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:ConsolidatedEntities

srt:ParentCompany


Equity
Period End2020-12-312019-12-312018-12-31
Value785520
Percentage of EquitySecuritiesFvNi9.26.1-31.7
Percentage of Assets0.50.40.2
Percentage of Assets srt:ParentCompany1.41.20.5

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

kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.82.80.40.70.50.10.20.30.20.2
Percentage of EquitySecuritiesFvNi0.30.30.00.10.10.00.00.00.0-0.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.0

kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.11.70.00.10.20.30.30.5
Percentage of EquitySecuritiesFvNi0.00.20.00.00.00.00.0-0.8
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.00.0

kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:PreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value15161515141113131313
Percentage of EquitySecuritiesFvNi1.71.81.82.01.81.61.50.00.0-20.2
Percentage of Assets0.10.10.10.10.10.10.10.10.10.1
Percentage of Assets kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.0

kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value0.10.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.00.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel3 us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.0

kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:PreferredStock


Equity
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1.70.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.20.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel3 us-gaap:FairValueMeasurementsRecurring us-gaap:PreferredStock0.00.00.00.00.00.00.0

kmpr:FinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value206.88.77.77.99.012121210
Percentage of EquitySecuritiesFvNi2.10.81.01.01.01.31.40.00.0-15.9
Percentage of Assets0.10.00.10.10.10.10.10.10.10.1
Percentage of Assets kmpr:FinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.0

kmpr:FinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-03-312020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1.71.70.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.20.20.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets kmpr:FinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.00.0

kmpr:FinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring, us-gaap:PreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value34384341403844434341
Percentage of EquitySecuritiesFvNi3.64.35.15.25.25.44.90.00.0-64.1
Percentage of Assets0.20.30.30.30.30.30.30.30.30.4
Percentage of Assets kmpr:FinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.0

kmpr:FinanceInsuranceandRealEstate, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1.70.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.20.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.0
Percentage of Assets kmpr:FinanceInsuranceandRealEstate us-gaap:FairValueInputsLevel3 us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.0

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

kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2.92.90.42.40.50.20.40.60.50.7
Percentage of EquitySecuritiesFvNi0.30.30.00.30.10.00.00.00.0-1.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.0
Percentage of Assets kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.0

kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate, us-gaap:FairValueMeasurementsRecurring, us-gaap:PreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value17161515141214141413
Percentage of EquitySecuritiesFvNi1.81.81.82.01.81.71.60.00.0-20.2
Percentage of Assets0.10.10.10.10.10.10.10.10.10.1
Percentage of Assets kmpr:AllIndustriesOtherthanFinanceInsuranceandRealEstate us-gaap:FairValueMeasurementsRecurring us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.0

kmpr:FinanceInsuranceandRealEstate, us-gaap:FairValueMeasurementsRecurring, us-gaap:CommonStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value218.5107.77.99.012121210
Percentage of EquitySecuritiesFvNi2.30.91.21.01.01.31.40.00.0-15.9
Percentage of Assets0.10.10.10.10.10.10.10.10.10.1
Percentage of Assets kmpr:FinanceInsuranceandRealEstate us-gaap:FairValueMeasurementsRecurring us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.0

kmpr:FinanceInsuranceandRealEstate, us-gaap:FairValueMeasurementsRecurring, us-gaap:PreferredStock


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value34384341403844434341
Percentage of EquitySecuritiesFvNi3.64.35.15.25.25.44.90.00.0-64.1
Percentage of Assets0.20.30.30.30.30.30.30.30.30.4
Percentage of Assets kmpr:FinanceInsuranceandRealEstate us-gaap:FairValueMeasurementsRecurring us-gaap:PreferredStock0.00.00.00.00.00.00.00.00.00.0

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

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


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value587532505442453384600672669437
Percentage of EquitySecuritiesFvNi61.359.358.956.257.954.266.20.00.0-680.7
Percentage of Assets3.93.73.53.13.43.04.65.25.33.8
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring, us-gaap:ExchangeTradedFunds


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value564522496434445374586659656427
Percentage of EquitySecuritiesFvNi58.958.257.855.156.952.864.70.00.0-664.5
Percentage of Assets3.83.73.53.13.32.94.55.15.23.7
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring us-gaap:ExchangeTradedFunds0.00.00.00.00.00.00.00.00.00.0

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


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value50566058545058575754
Percentage of EquitySecuritiesFvNi5.36.37.17.47.07.16.40.00.0-85.1
Percentage of Assets0.30.40.40.40.40.40.50.40.50.5
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.0

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


Equity
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value3.40.10.00.00.00.00.00.0
Percentage of EquitySecuritiesFvNi0.40.00.00.00.00.00.0-0.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.0

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

us-gaap:FairValueMeasurementsRecurring, srt:PartnershipInterest


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value316308292286274275248198196192
Percentage of EquitySecuritiesFvNi33.034.434.036.435.138.827.30.00.0-298.6
Percentage of Assets2.12.22.02.02.02.11.91.51.61.7
Percentage of Assets us-gaap:FairValueMeasurementsRecurring srt:PartnershipInterest0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value957897858788783709907928923684
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.00.00.0-1064.4
Percentage of Assets6.46.36.05.65.85.57.07.27.35.9
Percentage of Assets us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:ExchangeTradedFunds


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value564522496434445374586659656427
Percentage of EquitySecuritiesFvNi58.958.257.855.156.952.864.70.00.0-664.5
Percentage of Assets3.83.73.53.13.32.94.55.15.23.7
Percentage of Assets us-gaap:FairValueMeasurementsRecurring us-gaap:ExchangeTradedFunds0.00.00.00.00.00.00.00.00.00.0

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

us-gaap:FairValueMeasurementsRecurring, srt:PartnershipInterest, kmpr:FairValueInputsNetAssetValue


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value316308292286274275248198196192
Percentage of EquitySecuritiesFvNi33.034.434.036.435.138.827.30.00.0-298.6
Percentage of Assets2.12.22.02.02.02.11.91.51.61.7
Percentage of Assets us-gaap:FairValueMeasurementsRecurring srt:PartnershipInterest kmpr:FairValueInputsNetAssetValue0.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementsRecurring, us-gaap:EquitySecurities, kmpr:FairValueInputsNetAssetValue


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value316308292286274275248198196192
Percentage of EquitySecuritiesFvNi33.034.434.036.435.138.827.30.00.0-298.6
Percentage of Assets2.12.22.02.02.02.11.91.51.61.7
Percentage of Assets us-gaap:FairValueMeasurementsRecurring us-gaap:EquitySecurities kmpr:FairValueInputsNetAssetValue0.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value649556575574581581774660651604526563289281270269268265255248233234238237239217220228255258267253258260256254256250250170171169169169142
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.33.94.04.14.34.56.05.25.25.04.64.83.33.43.23.23.33.23.13.02.82.93.02.93.02.82.82.93.23.33.53.33.33.23.23.13.23.13.12.12.12.12.02.01.7

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value2921145.8
Percentage of OtherAssets5.12.82.72.1
Percentage of Assets0.20.20.10.1
Percentage of Assets srt:ParentCompany0.50.50.40.2

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Other
Period End2021-06-302021-03-31
Value2.80.6
Percentage of OtherAssets0.40.1
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary0.00.0

Taxes Payable Current

us-gaap:TaxesPayableCurrent us-gaap:ConsolidatedEntities

us-gaap:TaxesPayableCurrent

srt:ParentCompany


Taxes
Period End2020-12-312019-12-312018-12-31
Value415540
Percentage of TaxesPayableCurrent100.0100.0100.0
Percentage of Assets0.30.40.4
Percentage of Assets srt:ParentCompany0.71.21.1

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value11221122117211737777787787788739089091123951592592592592751751750
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets7.57.98.28.35.86.06.06.16.97.57.99.510.87.17.17.17.29.19.29.3

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities, us-gaap:DebtInstrument

srt:ParentCompany, kmpr:NewTermLoanAgreementDue2023


Long
Period End2020-12-312019-12-312018-12-31
Value49490.0
Percentage of LongTermDebt4.36.40.0
Percentage of Assets0.30.40.0
Percentage of Assets srt:ParentCompany kmpr:NewTermLoanAgreementDue20230.00.00.0

srt:ParentCompany, kmpr:SeniorNotes2400PercentDueSeptember302030


Long
Period End2020-12-31
Value395
Percentage of LongTermDebt33.7
Percentage of Assets2.8
Percentage of Assets srt:ParentCompany kmpr:SeniorNotes2400PercentDueSeptember3020300.0

srt:ParentCompany, kmpr:SeniorNotes4.35PercentDueFebruary152025


Long
Period End2020-12-312019-12-312018-12-31
Value448448448
Percentage of LongTermDebt38.357.649.3
Percentage of Assets3.13.53.9
Percentage of Assets srt:ParentCompany kmpr:SeniorNotes4.35PercentDueFebruary1520250.00.00.0

us-gaap:LongTermDebt us-gaap:DebtInstrument

kmpr:SeniorNotes2400PercentDueSeptember302030


Long
Period End2021-06-30
Value395
Percentage of LongTermDebt35.3
Percentage of Assets2.6
Percentage of Assets kmpr:SeniorNotes2400PercentDueSeptember3020300.0

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:LongtermDebtType

kmpr:NewTermLoanAgreementDue2023, us-gaap:SecuredDebt


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-07-052018-12-31
Value494949494949490.0
Percentage of LongTermDebt4.34.36.46.46.46.40.00.0
Percentage of Assets0.30.40.40.40.40.40.00.0
Percentage of Assets kmpr:NewTermLoanAgreementDue2023 us-gaap:SecuredDebt0.00.00.00.00.00.00.00.0

kmpr:SeniorNoteDueonSeptemberNineteenTwentyTwentyTwo, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-06-302018-12-31
Value277277278278279279279280281
Percentage of LongTermDebt24.724.823.723.835.935.936.032.131.0
Percentage of Assets1.92.01.92.02.12.22.22.22.4
Percentage of Assets kmpr:SeniorNoteDueonSeptemberNineteenTwentyTwentyTwo us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.0

kmpr:SeniorNotes2400PercentDueSeptember302030, us-gaap:SeniorNotes


Long
Period End2021-06-302021-03-312020-12-312020-09-30
Value395395395395
Percentage of LongTermDebt35.335.333.733.7
Percentage of Assets2.62.82.82.8
Percentage of Assets kmpr:SeniorNotes2400PercentDueSeptember302030 us-gaap:SeniorNotes0.00.00.00.0

kmpr:SeniorNotes4.35PercentDueFebruary152025, us-gaap:SeniorNotes


Long
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value448448448448448448448448450448448448448247247247
Percentage of LongTermDebt40.038.338.357.757.757.657.651.449.575.775.775.775.733.033.033.0
Percentage of Assets3.03.13.23.33.53.53.53.63.95.45.35.45.53.03.03.1
Percentage of Assets kmpr:SeniorNotes4.35PercentDueFebruary152025 us-gaap:SeniorNotes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:LongtermDebtType

us-gaap:SeniorNotes


Long
Period End2021-03-312020-12-312019-12-31
Value448448448
Percentage of LongTermDebt40.038.357.6
Percentage of Assets3.23.13.5
Percentage of Assets us-gaap:SeniorNotes0.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value2692272852452261161781751248226400.01.114110.0
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0
Percentage of Assets1.81.62.01.71.70.91.41.41.00.70.20.30.00.00.20.10.0

us-gaap:DeferredIncomeTaxLiabilitiesNet us-gaap:ConsolidatedEntities

srt:ParentCompany


Deferred
Period End2020-12-312019-12-312018-12-312017-12-31
Value38322016
Percentage of DeferredIncomeTaxLiabilitiesNet13.618.177.1114.2
Percentage of Assets0.30.20.20.2
Percentage of Assets srt:ParentCompany0.70.70.50.6

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value2322192120201918
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.10.20.20.20.10.2

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo us-gaap:ConsolidatedEntities

srt:ParentCompany


Lessee
Period End2020-12-312019-12-31
Value2.43.5
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo12.318.1
Percentage of Assets0.00.0
Percentage of Assets srt:ParentCompany0.00.1

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value2019171919181716
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree us-gaap:ConsolidatedEntities

srt:ParentCompany


Lessee
Period End2020-12-312019-12-31
Value2.43.7
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree13.521.8
Percentage of Assets0.00.0
Percentage of Assets srt:ParentCompany0.00.1

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1513131717161415
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour us-gaap:ConsolidatedEntities

srt:ParentCompany


Lessee
Period End2020-12-312019-12-31
Value2.53.5
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour19.123.8
Percentage of Assets0.00.0
Percentage of Assets srt:ParentCompany0.00.1

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value109.18.41111118.312
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive us-gaap:ConsolidatedEntities

srt:ParentCompany


Lessee
Period End2020-12-312019-12-31
Value2.62.5
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive31.030.1
Percentage of Assets0.00.0
Percentage of Assets srt:ParentCompany0.00.1

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3424243131322827
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.20.20.20.20.20.2

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive us-gaap:ConsolidatedEntities

srt:ParentCompany


Lessee
Period End2020-12-312019-12-31
Value2225
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive94.691.1
Percentage of Assets0.20.2
Percentage of Assets srt:ParentCompany0.40.6

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value1028789909510093
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.70.60.60.60.70.80.7

us-gaap:OperatingLeaseLiability us-gaap:ConsolidatedEntities

srt:ParentCompany


Operating
Period End2020-12-312019-12-312018-12-31
Value26310.0
Percentage of OperatingLeaseLiability30.033.60.0
Percentage of Assets0.20.20.0
Percentage of Assets srt:ParentCompany0.50.70.0

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value116106103104109115107110
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.70.70.80.90.81.0

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue us-gaap:ConsolidatedEntities

srt:ParentCompany


Lessee
Period End2020-12-312019-12-31
Value3540
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue33.737.9
Percentage of Assets0.20.3
Percentage of Assets srt:ParentCompany0.60.9

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value14181413141514
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.1

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount us-gaap:ConsolidatedEntities

srt:ParentCompany


Lessee
Period End2020-12-312019-12-31
Value8.19.6
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount57.065.3
Percentage of Assets0.10.1
Percentage of Assets srt:ParentCompany0.10.2

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312013-12-31
Value4306433945634347418737603972389436833320305030632045206321152082203319831975207321052041199220902051
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.830.531.830.931.029.130.630.429.227.326.426.023.124.725.325.124.823.924.124.725.325.024.826.726.8

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value4563397230502115
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets31.830.626.425.3
Percentage of Assets srt:ParentCompany80.485.479.174.2

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value-44.9-44.9-45.7-98.8-99.5-100.1-100.6-94.5-89.2
Percentage of StockholdersEquity-1.0-1.0-1.0-2.3-2.4-2.7-2.5-3.1-4.2
Percentage of Assets-0.3-0.3-0.3-0.7-0.7-0.8-0.8-0.8-1.1
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value-2.1-2.2-2.3-2.5-2.6-2.6-2.7-3.0-4.0
Percentage of StockholdersEquity-0.0-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value594441730652602279439119306
Percentage of StockholdersEquity13.810.216.015.014.47.411.13.914.5
Percentage of Assets4.03.15.14.64.52.23.41.03.7
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value54339068054949717433621212137124222135
Percentage of StockholdersEquity12.69.014.912.611.94.78.50.710.06.96.210.76.6
Percentage of Assets3.62.74.73.93.71.42.60.22.51.71.52.81.8
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-4.0-3.8-2.1-1.9-2.9-2.30.0
Percentage of StockholdersEquity-0.1-0.1-0.0-0.0-0.1-0.10.0
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.00.0
Percentage of Assets us-gaap:AccumulatedOtherThanTemporaryImpairment0.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-312008-12-312007-12-31
Value43064339456343474187376039723894368333203050306320452063211519751992202420122109209021042138214420512009200521722161220421482131221622202136211621132113191716482291
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets28.830.531.830.931.029.130.630.429.227.326.426.023.124.725.324.124.825.125.026.826.726.626.827.026.825.925.627.027.027.126.826.727.427.126.125.725.325.322.40.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value54339068054949717433637027615021306911619413712422213531225815758-108.1324
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest12.69.014.912.611.94.78.59.57.54.50.71.03.45.79.26.96.210.76.614.511.67.43.1-6.614.2
Percentage of Assets3.62.74.73.93.71.42.62.92.21.20.20.30.81.42.31.71.52.81.83.93.21.90.70.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value177018021805179817921788181918121806167316661661681676673660654660694725743751765764781
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest41.141.539.641.442.847.545.846.649.050.454.654.233.332.831.833.432.831.633.933.533.635.539.946.434.1
Percentage of Assets11.812.712.612.813.313.814.014.114.313.714.414.17.78.18.08.08.18.49.19.19.29.08.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value6.46.56.56.56.56.56.76.76.76.56.56.55.25.15.15.15.15.25.65.86.06.16.26.26.4
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.10.10.20.20.20.20.20.20.20.20.30.20.20.30.30.20.30.30.30.30.30.40.3
Percentage of Assets0.00.00.00.00.00.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value198521402071199318911791181017041593148913551365128912641243117212091202121511181208119810869851178
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest46.149.345.445.945.247.645.643.843.344.944.444.663.061.358.859.460.757.559.351.754.556.756.759.851.4
Percentage of Assets13.315.114.414.114.013.913.913.312.612.211.711.614.615.114.814.315.015.415.914.014.914.312.70.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value177018021805179817921788181918121806167316661661681676673672666663660656654652654651657655660662671693694698709722725722729737743745744743751751765
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets11.812.712.612.813.313.814.014.114.313.714.414.17.78.18.08.18.18.08.07.87.98.08.18.18.28.38.48.48.48.79.19.09.19.09.18.99.19.39.29.19.19.09.09.08.9

us-gaap:AdditionalPaidInCapitalCommonStock us-gaap:ConsolidatedEntities

srt:ParentCompany


Additional
Period End2020-12-312019-12-312018-12-312017-12-31
Value180518191666673
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0
Percentage of Assets12.614.014.48.0
Percentage of Assets srt:ParentCompany31.839.143.223.6

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value198521402071199318911791181017041593148913551365128912641243121811841160117211551184119212091218120411891202115511831231121511841151115811181130110111261208120012101225119811981086
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets13.315.114.414.114.013.913.913.312.612.211.711.614.615.114.814.714.414.014.313.814.314.615.015.115.015.115.414.614.815.515.915.314.714.414.013.913.814.114.914.614.814.914.314.312.7

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-312017-12-31
Value2071181013551243
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets14.413.911.714.8
Percentage of Assets srt:ParentCompany36.538.935.143.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-03-312009-12-31
Value54339068054949717433637027615021306911619418617615413725626119012414914526022228127821413512113828631234531126225826817514115715758
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.62.74.73.93.71.42.62.92.21.20.20.30.81.42.32.22.21.91.73.13.12.31.51.81.83.32.83.63.52.71.81.61.83.63.94.23.93.33.23.32.11.71.91.90.7

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value68033621194
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets4.72.60.22.3
Percentage of Assets srt:ParentCompany12.07.20.66.8

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.2125.26.16.37.35.35.96.57.65.15.44.73.4
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.2125.26.16.37.35.35.96.57.65.15.44.73.4
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value97140196-12.5201621671301478919315311774766055487053397747865129342635372916-4.781-33.9421.155-14.9-31.3-52.073-1.7102425
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.410.414.1-0.916.45.113.110.511.67.217.712.915.810.710.98.88.17.410.98.46.312.67.714.18.55.86.15.06.56.75.02.6-0.813.2-5.76.60.29.1-2.4-5.3-7.911.1-0.31.63.63.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-389.6311-287.7-392.5-170.894-252.232-193.9-219.719-584.970-2.0-155.9-74.1157-32.7-115.5-31.4-28.2-63.0-19.0-5.5-31.827-32.05336-162.2-9.44528-60.3-173.158154-146.7-120.032728868321682592
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-25.823.1-20.7-29.0-13.97.6-19.62.6-15.2-17.81.7-48.99.5-0.3-22.4-10.723.0-5.0-18.0-4.9-4.5-10.3-3.1-0.9-5.25.5-5.79.96.7-29.2-1.67.24.9-9.8-29.09.125.4-24.0-19.655.243.710.44.825.93.713.4

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-149.8-111.0-55.1367578.287-133.243162-230.7-126.1346-2.3-12.1-9.7-172.1-11.3-9.9-10.9-12.1-15.5-13.8-28.1-13.8-45.1-19.2-48.9-75.2123-29.4-55.4-52.1-19.8-15.4-32.4-35.2-31.4-84.951-190.2-181.5-63.0-129.9-110.2-101.2
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-9.9-8.2-4.027.24.70.76.8-10.73.413.2-21.1-10.546.8-0.3-1.7-1.4-25.1-1.7-1.5-1.7-1.9-2.5-2.2-4.6-2.3-9.0-3.4-9.1-13.922.3-5.0-8.7-8.8-3.2-2.6-5.0-5.8-5.1-13.88.6-28.8-27.6-9.4-20.0-16.1-14.6

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-442.3341-146.1-37.1881643.229-2.631
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-29.325.2-10.5-2.77.113.40.22.3-0.22.6

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-20.6-60.4-51.379-9.49.1-25.9-3.53.8-5.12.8-6.40.6-5.63.7-3.71.11.08.9-3.4-2.2-4.0-2.6-10.7-9.1-9.81.3-7.0-5.8-4.9-3.9-13.6-10.2-8.4-4.3-10.2-7.5-11.4-4.1-8.9-28.21043-11.4-19.06.4
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value97140196-12.5201621671301478919315311774766055487053397747865129342635372916-4.781-33.9421.155-14.9-31.3-52.073-1.7102425
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues6.410.414.1-0.916.45.113.110.511.67.217.712.915.810.710.98.88.17.410.98.46.312.67.714.18.55.86.15.06.56.75.02.6-0.813.2-5.76.60.29.1-2.4-5.3-7.911.1-0.31.63.63.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-62.612397122126641241291221556.5923753364736-0.331-16.34.0-2.14.6372913
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.29.17.09.010.25.29.710.49.612.60.67.75.17.85.36.95.3-0.04.9-2.50.6-0.30.76.24.92.7

us-gaap:NetIncomeLoss us-gaap:AwardType

kmpr:ParticipatingAwards


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value0.00.10.10.10.10.40.3
Percentage of NetIncomeLoss-0.00.10.10.10.20.30.2
Percentage of Revenues0.00.00.00.00.00.00.0
Percentage of Revenues kmpr:ParticipatingAwards0.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value126.8-53.16.32.12.42.6-0.31110114.9-1.01.35.22.1113.40.41.6-2.9-3.2-7.1-2.316
Percentage of NetIncomeLoss-20.05.5-54.55.21.73.82.1-0.29.56.7169.25.3-2.72.414.14.432.2-1133.31.3-9.8-72.5152.4-154.3-6.156.6
Percentage of Revenues0.80.5-3.80.50.20.20.2-0.00.90.81.00.4-0.10.20.70.31.70.50.10.2-0.5-0.5-1.2-0.42.8
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value0.0-0.8-53.1-0.7-0.6-0.61.80.00.10.4-0.2-0.2-0.3-0.20.20.00.10.1-0.4-0.2-1.8-1.6-3.8-3.7-3.9
Percentage of NetIncomeLoss-0.0-0.6-54.5-0.6-0.5-0.91.40.00.10.3-3.1-0.2-0.8-0.40.50.00.3-33.3-1.31.2-45.076.2-82.6-9.8-13.1
Percentage of Revenues0.0-0.1-3.8-0.1-0.0-0.00.10.00.00.0-0.0-0.0-0.0-0.00.00.00.00.0-0.1-0.0-0.3-0.3-0.6-0.6-0.6
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-0.1-0.1-0.2-0.10.0-0.1-0.3-0.10.00.10.0-0.1-0.10.00.0-0.2-0.70.00.00.00.0
Percentage of NetIncomeLoss0.2-0.1-0.2-0.10.0-0.2-0.2-0.10.00.10.0-0.1-0.30.00.0-0.4-1.9-0.00.0-0.00.0
Percentage of Revenues-0.0-0.0-0.0-0.00.0-0.0-0.0-0.00.00.00.0-0.0-0.00.00.0-0.0-0.10.00.00.00.0
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value127.70.27.12.73.11.1-0.2119.9115.2-0.61.55.02.3123.30.81.8-1.1-1.6-3.31.420
Percentage of NetIncomeLoss-20.16.20.25.82.14.80.9-0.29.46.4172.35.6-1.62.813.64.833.9-1100.02.6-11.0-27.576.2-71.73.769.7
Percentage of Revenues0.80.60.00.50.20.30.1-0.00.90.81.00.4-0.10.20.70.31.80.50.10.3-0.2-0.3-0.50.23.4
Percentage of Revenues us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementClassOfStock

us-gaap:CommonStock


Net
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-62.612312212663128121
Percentage of NetIncomeLoss100.099.999.999.999.899.799.8
Percentage of Revenues-4.29.19.010.25.210.39.5
Percentage of Revenues us-gaap:CommonStock0.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-62.612397122126641241291221556.5923753
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-4.29.17.09.010.25.29.710.49.612.60.67.75.17.8
Percentage of Revenues us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-389.6311-287.7-392.5-170.894-252.232-193.9-219.719-584.970-2.0-155.9-74.1157-32.7-115.5-31.4-28.2-63.0-19.0-5.5-31.827-32.05336-162.2-9.44528-60.3-173.158154-146.7-120.032728868321682592
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-25.823.1-20.7-29.0-13.97.6-19.62.6-15.2-17.81.7-48.99.5-0.3-22.4-10.723.0-5.0-18.0-4.9-4.5-10.3-3.1-0.9-5.25.5-5.79.96.7-29.2-1.67.24.9-9.8-29.09.125.4-24.0-19.655.243.710.44.825.93.713.4

Payments To Acquire Productive Assets

us-gaap:PaymentsToAcquireProductiveAssets

us-gaap:PaymentsToAcquireProductiveAssets


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value169.27.26.819203023219.31121
Percentage of PaymentsToAcquireProductiveAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-149.8-111.0-55.1367578.287-133.243162-230.7-126.1346-2.3-12.1-9.7-172.1-11.3-9.9-10.9-12.1-15.5-13.8-28.1-13.8-45.1-19.2-48.9-75.2123-29.4-55.4-52.1-19.8-15.4-32.4-35.2-31.4-84.951-190.2-181.5-63.0-129.9-110.2-101.2
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-9.9-8.2-4.027.24.70.76.8-10.73.413.2-21.1-10.546.8-0.3-1.7-1.4-25.1-1.7-1.5-1.7-1.9-2.5-2.2-4.6-2.3-9.0-3.4-9.1-13.922.3-5.0-8.7-8.8-3.2-2.6-5.0-5.8-5.1-13.88.6-28.8-27.6-9.4-20.0-16.1-14.6

Proceeds From Issuance Of Long Term Debt

us-gaap:ProceedsFromIssuanceOfLongTermDebt

us-gaap:ProceedsFromIssuanceOfLongTermDebt


Proceeds
Period End2020-12-312019-12-312019-09-302018-12-312018-09-30
Value0.00.0490.4-0.4
Percentage of ProceedsFromIssuanceOfLongTermDebt0.00.0100.0100.0100.0

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt us-gaap:LongtermDebtType

us-gaap:RepaymentsOfLongTermDebt

us-gaap:SecuredDebt


Repayments
Period End2021-03-16
Value50
Percentage of RepaymentsOfLongTermDebt100.0

Payments Of Dividends

us-gaap:PaymentsOfDividends

us-gaap:PaymentsOfDividends


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value202119191920181616161515
Percentage of PaymentsOfDividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Dividends

us-gaap:Dividends

us-gaap:Dividends


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value20211919192018161616151512
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Dividends us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividendsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value20211919192018161616151512
Percentage of Dividends100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value109420.00.014950.00.00.00.00.00.00.03.83.8161.8237.536627.71737386.53.01821175.70.03.4189.912
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.00.00.0100.0100.00.00.00.00.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

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

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value60.9756.5346.4837.4536.3536.1239.7538.9739.4639.2339.7439.6139.6539.8141.3840.539.8639.9540.5338.9338.940.0740.740.740.7342.34
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange

kmpr:Range1


Share
Period End2020-12-312019-12-312018-12-312017-12-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value27.7927.7716.4816.4813.5513.5513.5513.5513.5513.5513.5513.5513.5513.5513.5513.5513.55
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice45.649.135.544.034.134.234.234.032.733.534.033.933.434.834.833.833.3

kmpr:Range2


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value34.6534.8327.7722.3316.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.4816.48
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice56.861.659.759.645.345.641.542.341.842.041.541.641.641.439.840.741.341.340.742.342.441.140.5

kmpr:Range3


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value42.4742.5634.8927.8223.3723.4723.4723.2723.2723.2623.3623.3823.3823.3823.4323.5823.6123.6123.7523.7423.7423.7423.74
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice69.775.375.174.364.365.059.059.759.059.358.859.059.058.756.658.259.259.158.661.061.059.258.3

kmpr:Range4


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value59.8859.942.5731.8427.8927.928.6729.1829.229.1228.8428.8528.8628.8628.8728.7428.7828.7628.6428.5628.5228.4527.66
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice98.2106.091.685.076.777.272.174.974.074.272.672.872.872.569.871.072.272.070.773.473.371.068.0

kmpr:Range5


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value66.6267.0459.937.432.4333.1933.233.2333.2333.1333.1633.1833.1833.1833.1933.1733.1733.4331.9231.9231.1831.1831.34
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice109.3118.6128.999.989.291.983.585.384.284.583.483.883.783.380.281.983.283.778.882.080.277.877.0

kmpr:Range6


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value76.3476.2767.0942.5836.6436.5636.5536.6836.7236.6736.9136.936.936.8837.2237.2237.2537.2537.2537.2537.2537.2537.25
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice125.2134.9144.3113.7100.8101.291.994.193.193.592.993.293.192.689.991.993.593.291.995.795.893.091.5

kmpr:Range7


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value84.7885.4477.76041.3340.740.700043.143.143.143.143.5743.5843.5843.5743.5643.5643.5643.3343.32
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice139.1151.1167.30.0113.7112.7102.40.00.00.0108.5108.8108.7108.3105.3107.6109.3109.1107.5111.9112.0108.1106.4

kmpr:Range8


Share
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value60.9756.5382.154.549.7449.7348.848.848.6248.6148.5948.5948.5948.5948.6448.6448.6348.6448.6248.6248.6248.6848.68
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice100.0100.0176.6145.5136.8137.7122.8125.2123.2123.9122.3122.7122.5122.1117.5120.1122.0121.8120.0124.9125.0121.5119.6

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2851782614296282324262396417371
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value181176186197322314302294388372373
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:AmortizationOfIntangibleAssetsAcquired

kmpr:AmortizationOfIntangibleAssetsAcquired


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value273.24.74.64.84.75.4
Percentage of AmortizationOfIntangibleAssetsAcquired100.0100.0100.0100.0100.0100.0100.0

kmpr:BusinessAcquisitionProFormaTotalExpenses

kmpr:BusinessAcquisitionProFormaTotalExpenses


Business
Period End2021-06-302020-06-302018-09-302017-09-30
Value159711591044966
Percentage of BusinessAcquisitionProFormaTotalExpenses100.0100.0100.0100.0

kmpr:BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsBeforeTax us-gaap:ConsolidationItems

kmpr:BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsBeforeTax

us-gaap:MaterialReconcilingItems


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value1016201417116.25.41.25.66.7283.6
Percentage of BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsNetOfTax us-gaap:ConsolidationItems

kmpr:BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsNetOfTax

us-gaap:MaterialReconcilingItems


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value8.2121511139.35.04.11.04.45.7222.3
Percentage of BusinessCombinationAcquisitionIntegrationandOtherRelatedCostsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:DefinedBenefitPensionPlanNumberofParticipantsandBeneficiaries us-gaap:RetirementPlanType

kmpr:DefinedBenefitPensionPlanNumberofParticipantsandBeneficiaries

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-31
Value3145.03175.0-5335.0
Percentage of DefinedBenefitPensionPlanNumberofParticipantsandBeneficiaries100.0100.0100.0

kmpr:EquitySecuritiesFVNIGainLossNetofTax us-gaap:ConsolidationItems

kmpr:EquitySecuritiesFVNIGainLossNetofTax

us-gaap:MaterialReconcilingItems


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value3241573556-93.1307.82050-60.48.70.3
Percentage of EquitySecuritiesFVNIGainLossNetofTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:GainLossOnSaleOfInvestmentsNetOfTax us-gaap:ConsolidationItems

kmpr:GainLossOnSaleOfInvestmentsNetOfTax

us-gaap:MaterialReconcilingItems


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1510-0.17.99.3132.21.41612132.83.02.17.45.3176.85.97.53.74.46.13.5222.2135.22.44.213311.5
Percentage of GainLossOnSaleOfInvestmentsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:GainLossRelatedtoLitigationSettlementNetoftax us-gaap:ConsolidationItems

kmpr:GainLossRelatedtoLitigationSettlementNetoftax

us-gaap:CorporateNonSegment


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302017-12-312017-09-30
Value0.00.00.0700.00.0150.0280.00.0
Percentage of GainLossRelatedtoLitigationSettlementNetoftax0.00.00.0100.00.00.0100.00.0100.00.00.0

kmpr:ImpairmentLosses

kmpr:ImpairmentLosses


Impairment
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.24.01.07.0121.86.73.6
Percentage of ImpairmentLosses100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:InterestAndOtherExpenses

kmpr:InterestAndOtherExpenses


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value595712847514446373841426125292118211925222022252526292422222226252523202220212121201918161716
Percentage of InterestAndOtherExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:OperatingIncomeLossNetofTax

kmpr:OperatingIncomeLossNetofTax


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-99.48710590791629713091985910436
Percentage of OperatingIncomeLossNetofTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:OperatingIncomeLossNetofTax us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-12.4-9.8-11.6-7.8-5.362-6.1-3.010-6.6-16.849-6.6-3.5-0.6-2.0
Percentage of OperatingIncomeLossNetofTax12.5-11.2-11.0-8.6-6.738.1-6.2-2.311.3-6.7-28.047.5-18.10.00.00.0

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-87.097117988410010413381105686043
Percentage of OperatingIncomeLossNetofTax87.5111.2111.0108.6106.761.9106.2102.388.7106.7113.758.2118.1

kmpr:OperatingIncomeLossNetofTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, kmpr:LifeAndHealthInsurance


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value137.39.412162228331323132726
Percentage of OperatingIncomeLossNetofTax-13.18.48.913.420.313.729.525.714.523.422.725.973.2

us-gaap:OperatingSegments, kmpr:PreferredPropertyCasualtyInsurance


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-8.39.616-32.70.91812215.22.86.012-6.0
Percentage of OperatingIncomeLossNetofTax8.411.016.0-36.01.111.313.116.25.72.810.011.7-16.4

us-gaap:OperatingSegments, kmpr:SpecialtyPropertyCasualtyInsurance


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
Value-91.7809111967606278627948212223
Percentage of OperatingIncomeLossNetofTax92.391.986.1131.185.236.963.660.468.580.581.020.661.40.0

kmpr:OperatingLeaseLiabilityReduction

kmpr:OperatingLeaseLiabilityReduction


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.64.63.54.59.54.74.34.04.64.7
Percentage of OperatingLeaseLiabilityReduction100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:OperatingLeaseRightOfUseAssetAmortization

kmpr:OperatingLeaseRightOfUseAssetAmortization


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0100000.0100000.00100000.0100000.0200000.0200000.0100000.0200000.0
Percentage of OperatingLeaseRightOfUseAssetAmortization0.0100.0100.00.0100.0100.0100.0100.0100.0100.0

kmpr:OtherOperatingIncomeExpenseNetofTax us-gaap:ConsolidationItems

kmpr:OtherOperatingIncomeExpenseNetofTax

us-gaap:CorporateNonSegment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-12400000.0-9800000.0-11600000.0-7800000.0-5300000.0-8500000.0-6100000.0-3000000.0-5600000.0
Percentage of OtherOperatingIncomeExpenseNetofTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:OtherPostretirementBenefitPlanNumberOfActiveEmployeesCovered us-gaap:RetirementPlanType

kmpr:OtherPostretirementBenefitPlanNumberOfActiveEmployeesCovered

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-31
Value500.0500.00
Percentage of OtherPostretirementBenefitPlanNumberOfActiveEmployeesCovered100.0100.00.0

kmpr:OtherPostretirementBenefitPlanNumberOfRetiredEmployeesCovered us-gaap:RetirementPlanType

kmpr:OtherPostretirementBenefitPlanNumberOfRetiredEmployeesCovered

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Other
Period End2021-06-302021-03-312020-12-31
Value575.0575.0-15.0
Percentage of OtherPostretirementBenefitPlanNumberOfRetiredEmployeesCovered100.0100.0100.0

kmpr:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetOfTax us-gaap:ConsolidationItems

kmpr:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetOfTax

us-gaap:MaterialReconcilingItems


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value2.53.2-0.40.85.59.51.31.55.3-2.8-5.41.40.00.42.51.91.63.35.65.44.26.09.62.11.44.64.22.52.70.55.02.20.7
Percentage of OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:ShareBasedAwardsIssuedDuringPeriodNetOfSharesExchanged us-gaap:StatementEquityComponents

kmpr:ShareBasedAwardsIssuedDuringPeriodNetOfSharesExchanged

us-gaap:CommonStock


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value0200000.00100000.00200000.0100000.00100000.0200000.000100000.0
Percentage of ShareBasedAwardsIssuedDuringPeriodNetOfSharesExchanged0.0100.00.0100.00.0100.0100.00.0100.0100.00.00.0100.0

kmpr:ShareBasedAwardsNetOfSharesExchanged

kmpr:ShareBasedAwardsNetOfSharesExchanged


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1700000.0-2900000.0200000.0-2000000.0300000.0-1200000.0100000.0-1900000.0-1800000.0-5600000.0-500000.0-3600000.0-700000.0-800000.0
Percentage of ShareBasedAwardsNetOfSharesExchanged100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:ShareBasedAwardsNetOfSharesExchanged us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1600000.0-200000.0200000.0-1300000.0600000.01400000.0100000.0-400000.0-100000.0-900000.0-100000.0-2800000.0-100000.0400000.0
Percentage of ShareBasedAwardsNetOfSharesExchanged94.16.9100.065.0200.0-116.7100.021.15.616.120.077.814.3-50.0

us-gaap:CommonStock


Share
Period End2021-06-302020-06-302020-03-312019-03-312018-12-312018-09-302018-06-30
Value100000.0100000.0-100000.00-100000.00100000.0
Percentage of ShareBasedAwardsNetOfSharesExchanged5.933.38.3-0.020.0-0.0-14.3

us-gaap:RetainedEarnings


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0-2700000.00-700000.0-400000.0-2500000.00-1500000.0-1700000.0-4700000.0-400000.0-700000.0-700000.0-1200000.0
Percentage of ShareBasedAwardsNetOfSharesExchanged0.093.10.035.0-133.3208.30.078.994.483.980.019.4100.0150.0

kmpr:VariableInterestEntityFundingInvestmentCommitmentFunding us-gaap:ConsolidatedEntities

kmpr:VariableInterestEntityFundingInvestmentCommitmentFunding

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Variable
Period End2021-06-302021-03-31
Value0.048
Percentage of VariableInterestEntityFundingInvestmentCommitmentFunding0.0100.0

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax


Business
Period End2021-06-302020-06-302018-12-312018-09-302017-12-312017-09-30
Value-62.41399.71505977
Percentage of BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss

us-gaap:BusinessAcquisitionsProFormaNetIncomeLoss


Business
Period End2021-06-302020-06-30
Value-89.4173
Percentage of BusinessAcquisitionsProFormaNetIncomeLoss100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue

us-gaap:BusinessAcquisitionsProFormaRevenue


Business
Period End2021-06-302020-06-302018-12-312018-09-302017-12-312017-09-30
Value150713321077119411581044
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0100.0100.0100.0100.0

us-gaap:BusinessCombinationConsiderationTransferred1 us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

kmpr:AmericanAccessCasualtyCompany


Business
Period End2020-11-23
Value370
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss

us-gaap:DebtAndEquitySecuritiesRealizedGainLoss


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1913-0.110.011162.81.72116163.63.82.6118.12610
Percentage of DebtAndEquitySecuritiesRealizedGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-900000.0-1300000.0-1500000.0-200000.0-2300000.0-4600000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value-900000.0-1300000.0-900000.0-200000.0-2200000.0-3500000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded100.0100.060.0100.095.776.1

us-gaap:ForeignGovernmentDebtSecurities


Debt
Period End2020-12-312020-09-302020-06-302020-03-31
Value-600000.00-100000.0-1100000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotPreviouslyRecorded40.0-0.04.323.9

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal


Debt
Period End2021-06-302021-03-312020-06-30
Value700000.0-500000.01500000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value200000.0-300000.0100000.0100000.0900000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal28.660.00.00.060.0

us-gaap:ForeignGovernmentDebtSecurities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value500000.0-200000.0300000.0-100000.0600000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossNotToSellBeforeRecoveryCreditLossPreviouslyRecordedExpenseReversal71.440.00.00.040.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold


Debt
Period End2021-03-312020-12-312020-09-30
Value300000.01500000.0500000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2021-03-312020-12-312020-09-30
Value300000.0900000.0400000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold100.060.080.0

us-gaap:ForeignGovernmentDebtSecurities


Debt
Period End2020-12-312020-09-30
Value600000.0100000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossSecuritiesSold40.020.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff


Debt
Period End2021-06-302021-03-312020-12-312020-09-30
Value0200000.01100000.0300000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff0.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff us-gaap:FinancialInstrument

us-gaap:CorporateDebtSecurities


Debt
Period End2020-12-312020-09-30
Value1100000.0300000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff100.0100.0

us-gaap:ForeignGovernmentDebtSecurities


Debt
Period End2021-03-31
Value200000.0
Percentage of DebtSecuritiesAvailableForSaleAllowanceForCreditLossWriteoff100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:FixedMaturities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value19131.91110151.41.92215
Percentage of DebtSecuritiesAvailableForSaleRealizedGain100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss us-gaap:InvestmentType

us-gaap:DebtSecuritiesAvailableForSaleRealizedLoss

us-gaap:FixedMaturities


Debt
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.21.14.41.90.51.10.00.31.92.6
Percentage of DebtSecuritiesAvailableForSaleRealizedLoss100.0100.0100.0100.0100.0100.00.0100.0100.0100.0

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value300000.0400000.0500000.0400000.0500000.0500000.0600000.0800000.0500000.0500000.0800000.0300000.0300000.0400000.0400000.0500000.0500000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-800000.0-700000.0-1000000.0-1600000.0-1500000.0-1500000.0-700000.0-700000.0-800000.0-700000.0-1100000.0-1100000.0-1100000.0-1000000.0-600000.0-700000.0-700000.0
Percentage of DefinedBenefitPlanAmortizationOfGainsLosses-266.7-175.0-200.0-400.0-300.0-300.0-116.7-87.5-160.0-140.0-137.5-366.7-366.7-250.0-150.0-140.0-140.0

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-400000.0-300000.0-400000.0-200000.0-400000.0-300000.0-300000.0-300000.0-400000.0-300000.0100000.0-500000.0-600000.0-300000.01000000.0-300000.0-400000.0
Percentage of DefinedBenefitPlanAmortizationOfPriorServiceCostCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanExpectedReturnOnPlanAssets

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2.42.35.67.37.47.37.77.67.77.67.27.37.27.27.77.77.8
Percentage of DefinedBenefitPlanExpectedReturnOnPlanAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DefinedBenefitPlanInterestCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanInterestCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.10.10.00.10.10.10.00.20.10.10.10.10.10.10.10.1
Percentage of DefinedBenefitPlanInterestCost100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.71.83.04.54.54.55.55.65.75.55.15.05.15.15.25.15.2
Percentage of DefinedBenefitPlanInterestCost1700.00.03000.00.04500.04500.05500.00.02850.05500.05100.05000.05100.05100.05200.05100.05200.0

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanNetPeriodicBenefitCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-0.6-0.6-0.7-0.6-0.8-0.6-0.7-1.1-0.7-0.6-0.5-0.7-0.7-0.60.7-0.7-0.7
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value0.10.262-1.2-1.4-1.3-1.5-1.3-1.2-1.4-1.0-1.2-1.0-1.9-1.9-1.9
Percentage of DefinedBenefitPlanNetPeriodicBenefitCost-16.7-33.3-8928.6200.0175.0216.7214.3118.2171.4233.3200.0171.4142.9-271.4271.4271.4

us-gaap:DefinedBenefitPlanServiceCost us-gaap:RetirementPlanType

us-gaap:DefinedBenefitPlanServiceCost

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.00.10.10.00.00.10.10.00.00.10.10.00.10.00.00.00.1
Percentage of DefinedBenefitPlanServiceCost0.0100.0100.00.00.0100.0100.00.00.0100.0100.00.0100.00.00.00.0100.0

us-gaap:DepreciationAmortizationAndAccretionNet

us-gaap:DepreciationAmortizationAndAccretionNet


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11119.69.88.88.0116.9113.13.44.0
Percentage of DepreciationAmortizationAndAccretionNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DirectPremiumsWritten us-gaap:BusinessAcquisition

us-gaap:DirectPremiumsWritten

kmpr:AmericanAccessCasualtyCompany


Direct
Period End2021-03-31
Value350
Percentage of DirectPremiumsWritten100.0

us-gaap:EquitySecuritiesFvNiGainLoss

us-gaap:EquitySecuritiesFvNiGainLoss


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4052734571-117.8399.82564-76.4110.40.7
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiGainLoss us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4052734571-117.8399.82564-76.4110.4
Percentage of EquitySecuritiesFvNiGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss

us-gaap:EquitySecuritiesFvNiUnrealizedGainLoss


Equity
Period End2021-06-302021-03-312020-12-31
Value995659
Percentage of EquitySecuritiesFvNiUnrealizedGainLoss100.0100.0100.0

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount

us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount


Equity
Period End2021-06-302021-03-312020-12-312018-06-30
Value3400000.0800000.0900000.00
Percentage of EquitySecuritiesWithoutReadilyDeterminableFairValueImpairmentLossAnnualAmount100.0100.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1100000.0-1100000.0-2700000.0-1300000.0-2300000.0-3000000.0-700000.02100000.0-4800000.0-2800000.02400000.01400000.01000000.02200000.0-900000.0400000.05100000.0-4500000.0-10400000.0-5100000.0-6200000.0-4500000.0-13700000.0-1400000.0300000.0-3100000.0200000.0-400000.0-200000.0400000.0-6100000.0-2400000.0-200000.0-1300000.0-200000.01400000.02000000.03600000.02200000.0800000.03600000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1 us-gaap:FairValueByAssetClass

us-gaap:CollateralizedLoanObligations


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value000-300000.0100000.0400000.0400000.0-300000.0300000.0500000.01400000.0500000.0100000.0500000.0700000.0200000.0200000.0100000.0300000.0-600000.0100000.0100000.0300000.0100000.0100000.00100000.00100000.00100000.00
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1-0.0-0.0-0.010.0-14.319.0-8.310.712.535.7140.022.7-11.1125.013.7-4.4-1.9-2.0-4.813.3-0.7-7.1100.0-3.250.0-0.0-50.00.0-1.6-0.0-50.0-0.0

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1100000.0-1100000.0-2700000.0-1300000.0-2300000.0-2700000.0-800000.01700000.0-5200000.0-2500000.02100000.0900000.0-400000.01800000.0-1000000.0-800000.0-600000.0-3300000.0-7200000.0-7000000.0-6300000.0-2500000.0-5900000.0-400000.0-800000.0-2300000.0700000.0-1800000.0-2400000.0100000.0-5200000.0-1800000.0-100000.0-800000.0500000.01400000.02000000.0100000.0-1700000.0600000.0400000.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1100.0100.0100.0100.0100.090.0114.381.0108.389.387.564.3-40.081.8111.1-200.0-11.873.369.2137.3101.655.643.128.6-266.774.2350.0450.01200.025.085.275.050.061.5-250.0100.0100.02.8-77.375.011.1

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value5.4-5.04.35.719-34.82.0-3.96.811-15.4-1.10.2-2.15.14.6-1.3-2.50.8-0.911-5.5-4.7-5.2-0.31.5-30.1194.5136.31.1-1.5-4.93.68.3-4.01.015-14.7-2.4
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss us-gaap:FairValueByAssetClass

kmpr:OtherMortgageandAssetbackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.3-0.80.1-0.11.0-0.6-0.20.40.30.5-0.10.20.1-0.40.2-0.2-0.1-0.10.10.0-0.10.10.10.0-0.2-0.10.0-0.2
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss5.616.02.3-1.85.11.7-10.0-10.34.44.20.6-18.212.544.41.73.62.11.9-33.30.00.30.52.20.0-3.2-9.1-0.04.1

us-gaap:CollateralizedLoanObligations


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.10.10.00.1-9.51.1-3.51.76.0-13.0-1.3-1.5-0.50.70.0-0.21.91.35.23.0-5.2-1.9-1.5-0.11.3-0.6-0.3-0.40.30.40.4-0.3-0.1
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss1.92.30.00.527.355.089.725.050.484.4118.2-750.023.813.70.015.4-76.0162.5-577.826.194.540.428.833.386.72.0-1.6-8.92.36.336.420.02.0

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value4.5-3.74.25.118-24.81.2-0.84.85.4-2.30.01.7-1.60.31.81.41.4-1.5-0.94.1-0.8-4.0-2.0-3.82.41.1-1.42.92.5-0.60.9-4.3-3.8-0.81.5-0.20.90.91.10.2
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss83.374.097.789.594.971.360.020.570.645.414.9-0.0850.076.25.939.1-107.7-56.0-187.5100.035.714.585.138.51266.7160.0-3.7-7.364.418.8-9.581.8286.777.6-22.218.15.090.05.9-7.5-8.3

us-gaap:MandatorilyRedeemablePreferredStock


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value0.5-0.5-0.10.7-0.10.00.00.00.00.00.00.0-0.20.10.00.4-0.3-0.1-0.10.0-0.3-0.3-0.50.5-0.30.2-1.2-0.10.00.00.20.2
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss9.310.0-2.312.3-0.5-0.0-0.0-0.00.0-0.00.00.015.4-4.00.0-44.4-2.61.82.1-0.0100.0-20.01.72.6-6.71.5-19.0-9.1-0.0-0.05.62.4

us-gaap:USStatesAndPoliticalSubdivisions


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.00.00.00.10.00.00.00.10.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss0.00.00.0-0.3-0.0-0.0-0.02.00.0-0.0-0.00.0-0.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value50173669538118165801051114205674634860406074674184902355112067966391505078954452617229314039195.9
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases us-gaap:FairValueByAssetClass

kmpr:OtherMortgageandAssetbackedSecurities


Fair
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value9.00.00.0-20.6200.00.00.010.00.00.00.00.00.00.01.30.00.00.00.00.0-0.10.10.04.5
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases18.00.00.0-11.331.30.00.00.02.40.00.00.00.00.00.00.60.00.00.00.00.0-0.10.20.05.7

us-gaap:CollateralizedLoanObligations


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value170.00.0-0.153868.2203.957354-11.348116.37.29.2-4.113171.7145.3154.18.0134.80.02.9115.624
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases35.30.00.0-0.265.847.812.525.23.752.184.2-20.065.517.813.111.822.9-6.718.726.04.117.65.96.57.96.719.75.00.03.222.211.131.3

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2117356953271103560101535467255040502955604840565989368331374852173638763740445520233224153.8
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases43.3100.099.4100.0100.233.460.853.374.896.347.913.0120.034.579.783.882.474.391.181.070.995.967.566.037.969.769.747.039.076.457.234.573.149.480.285.177.773.176.168.474.080.661.577.764.4

us-gaap:USStatesAndPoliticalSubdivisions


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.00.00.00.61.90.01.80.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases0.00.00.00.72.90.00.40.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value35318743154476195265204727138.78.8182936391238147.4461844338.4101.60.90.00.30.40.00.24.0120.0-3.32.969-68.1-1.4
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales us-gaap:FairValueByAssetClass

kmpr:OtherMortgageandAssetbackedSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.00.20.30.00.00.20.00.00.00.00.00.00.00.00.00.00.00.01.20.00.00.00.00.02.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.60.30.00.00.40.00.00.00.00.00.00.00.00.00.00.00.02.60.00.00.00.00.0125.00.00.00.0

us-gaap:CollateralizedLoanObligations


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.00.00.0260.00.02.90.00.00.00.00.0-3.14.32.93.80.00.01.90.00.00.07.50.05.60.00.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.00.00.058.90.00.05.50.00.00.00.00.0-35.648.915.812.70.00.015.80.00.00.016.00.012.70.00.00.00.00.00.00.0

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value35308743151876194965204727138.83.76.32235349.835116.8371731306.710-0.40.50.00.00.40.00.20.31.00.00.00.52.0-0.3-1.4
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales100.099.499.899.8100.040.6100.0100.094.5100.0100.0100.0100.0100.0101.142.034.473.695.987.281.793.477.891.980.496.271.292.579.893.6-25.055.60.00.0100.00.0100.07.58.10.0-0.017.22.90.4100.0

us-gaap:MandatorilyRedeemablePreferredStock


Fair
Period End2020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value0.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales0.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.10.00.00.10.058151611382868325036372261258.76.23742201353503731363033512213302015182016112-1.1-8.8
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements100.00.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements us-gaap:FairValueByAssetClass

kmpr:OtherMortgageandAssetbackedSecurities


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.10.00.00.10.00.20.20.2-0.1-0.20.00.02.90.10.00.00.00.10.00.00.00.00.80.00.00.10.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements100.00.00.0100.00.00.31.31.2-0.9-0.50.00.011.21.10.00.00.00.50.00.00.00.02.60.00.00.30.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-06-30
Value141.60.07.40.0-0.40.03.0160.1350.00.38.16.40.00.00.04.10.00.0-0.80.00.84.13.60.00.00.00.03.02.82.4-5.15.10.00.90.05.40.00.01.3
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3100.0100.00.0100.00.0100.00.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0100.00.00.0100.00.0100.0100.0100.00.00.00.00.0100.0100.0100.0100.0100.00.0100.00.0100.00.00.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3 us-gaap:FairValueByAssetClass

us-gaap:CollateralizedLoanObligations


Fair
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312013-12-312013-09-302013-06-302013-03-31
Value10.00.00.02.10.03.0140.0330.00.00.05.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel370.40.00.0-525.00.0100.084.80.094.40.00.00.078.10.00.00.0-0.00.00.00.00.00.00.00.0

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-06-30
Value2.51.60.07.40.0-2.50.00.02.50.12.00.00.38.10.00.00.00.00.00.00.00.00.03.02.80.0-5.15.10.00.90.05.40.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel317.6100.00.0100.00.0625.00.00.015.2100.05.60.0100.0100.00.00.00.00.0-0.00.00.00.00.0100.0100.00.0100.0100.00.0100.00.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value0.00.60.10.079557-1.60.01.60.01402.70.0661.51914100.1250.00.0-0.80.0163.81.30.00.00.63.00.00.05.80.00.00.06.10.00.00.00.00.01.3-4.4
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.0100.0100.00.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.00.0100.00.0100.0100.0100.00.00.0100.0100.00.00.0100.00.00.00.0100.00.00.00.00.00.0100.0100.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3 us-gaap:FairValueByAssetClass

us-gaap:CollateralizedLoanObligations


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.10.0775570.00.00.00.00.00.00.00.00.03.90.07.90.2100.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3100.00.097.6100.0-0.00.00.00.00.00.00.00.00.020.40.073.1200.039.0-0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CorporateDebtSecurities


Fair
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312010-12-312010-09-302010-06-30
Value0.00.60.00.0-1.60.01.60.00.02.70.05.00.015102.9-0.215-2.30.0120.00.60.00.00.63.00.00.05.80.00.00.06.10.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.0100.00.00.0100.00.0100.00.00.0100.00.07.50.079.675.026.9-200.057.9287.50.072.80.046.20.00.0100.0100.00.00.0100.00.00.00.0100.00.00.0-0.0

us-gaap:MandatorilyRedeemablePreferredStock


Fair
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value0.00.01.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.01.50.00.00.00.00.00.00.00.00.00.00.0-0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:USStatesAndPoliticalSubdivisions


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.00.00.70.00.01.80.01.50.00.00.00.00.0
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel30.00.00.90.00.01.30.0100.00.00.00.00.00.0

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeasePrincipalPayments


Finance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0100000.0100000.00200000.0100000.0200000.0200000.0100000.0200000.0
Percentage of FinanceLeasePrincipalPayments0.0100.0100.00.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments us-gaap:ConsolidationItems

us-gaap:GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments

us-gaap:MaterialReconcilingItems


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value1913-0.110.011162.81.72116163.63.82.6118.126109.1115.66.89.45.3343.4218.03.56.620492.3
Percentage of GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value1913-0.110.010152.81.72116168.3-0.72.4116.521109.3114.76.89.55.6343.4218.13.45.2203.02.2265.450
Percentage of GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments99.5100.0100.0100.089.796.4100.0100.0100.0100.0100.0230.6-18.492.399.180.281.896.2102.296.683.9100.0101.1105.7100.3100.0101.0101.297.178.899.06.195.70.00.00.0

us-gaap:GainLossRelatedToLitigationSettlement us-gaap:ConsolidationItems

us-gaap:GainLossRelatedToLitigationSettlement

us-gaap:CorporateNonSegment


Gain
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value0.00.00.0890.00.0200.00.0350.00.00.0
Percentage of GainLossRelatedToLitigationSettlement0.00.00.0100.00.00.0100.00.00.0100.00.00.00.0

us-gaap:GrossInvestmentIncomeOperating

us-gaap:GrossInvestmentIncomeOperating


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value122111112987694989610187969683
Percentage of GrossInvestmentIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GrossInvestmentIncomeOperating us-gaap:InvestmentType

kmpr:AlternativeInvestments


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value31272210-11.65.65.56.87.7-1.06.5136.6
Percentage of GrossInvestmentIncomeOperating25.924.120.010.7-15.15.95.67.07.6-1.16.813.77.9

kmpr:EquityMethodLimitedLiabilityInvestments


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value16227.68.2-12.71.80.41.62.6-3.62.9-0.41.4
Percentage of GrossInvestmentIncomeOperating13.420.16.88.3-16.51.90.41.72.6-4.13.0-0.41.7

kmpr:LimitedLiabilityInvestmentsIncludedinEquitySecurities


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value154.5142.41.13.85.15.25.12.63.6135.2
Percentage of GrossInvestmentIncomeOperating12.54.013.22.41.44.05.25.45.03.03.814.26.3

kmpr:OtherInvestment


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value9.34.73.92.72.44.20.60.60.30.00.30.20.4
Percentage of GrossInvestmentIncomeOperating7.64.23.52.73.14.40.60.60.30.00.30.20.5

us-gaap:EquitySecurities


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value4.82.14.72.83.64.38.35.26.92.56.62.52.6
Percentage of GrossInvestmentIncomeOperating3.91.94.22.84.74.58.55.46.82.96.92.63.1

us-gaap:FixedMaturities


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value69697172747173737576717064
Percentage of GrossInvestmentIncomeOperating56.961.764.073.596.774.975.475.974.987.374.572.977.5

us-gaap:PolicyLoans


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.45.55.4999999999999985.55.55.65.75.95.75.36.05.55.5
Percentage of GrossInvestmentIncomeOperating4.44.94.95.67.25.95.86.15.66.16.25.76.6

us-gaap:RealEstateInvestment


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2.42.42.52.32.32.52.72.42.22.52.42.42.4
Percentage of GrossInvestmentIncomeOperating2.02.12.22.33.02.62.82.52.22.92.52.52.9

us-gaap:ShortTermInvestments


Gross
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-0.81.21.32.30.31.61.32.52.61.82.72.31.2
Percentage of GrossInvestmentIncomeOperating-0.71.11.22.30.41.71.32.62.62.12.82.41.4

us-gaap:IncomeLossAttributableToParent

us-gaap:IncomeLossAttributableToParent


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-89.712115215977161148
Percentage of IncomeLossAttributableToParent100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:ConsolidatedEntities

us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Income
Period End2021-06-302021-03-31
Value-7.7-15.4
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:InvestmentType

kmpr:AlternativeEnergyPartnershipInvestments


Income
Period End2021-06-302021-03-31
Value-7.7-15.4
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0

kmpr:EquityMethodLimitedLiabilityInvestments


Income
Period End2021-06-302021-03-312020-06-302020-03-31
Value2018-11.60.7
Percentage of IncomeLossFromEquityMethodInvestments-270.1-117.50.00.0

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions

us-gaap:IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions


Income
Period End2020-12-312019-12-31
Value9600000.0-1200000.0
Percentage of IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions100.0100.0

us-gaap:IncomeTaxCreditsAndAdjustments us-gaap:ConsolidatedEntities

us-gaap:IncomeTaxCreditsAndAdjustments

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Income
Period End2021-06-302021-03-31
Value7.728
Percentage of IncomeTaxCreditsAndAdjustments100.0100.0

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts

us-gaap:IncreaseDecreaseInDeferredPolicyAcquisitionCosts


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value422111179.3130.4152129225810123.7138.67.93.86.32.62.9-9.48.3112.3-3.41.93.0-1.1-5.60.13.91.1-3.33.25.63.97.83.415-5.08.13.24.4-0.6
Percentage of IncreaseDecreaseInDeferredPolicyAcquisitionCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInIncomeTaxes

us-gaap:IncreaseDecreaseInIncomeTaxes


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-30.0-37.324-24.531141222-16.9408.5-14.20.7181.51811-2.323-14.0-11.6-4.6-5.611-17.4-10.524-0.5-22.5102333-24.525-25.425-31.21629-5.1-40.3371016
Percentage of IncreaseDecreaseInIncomeTaxes100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve

us-gaap:IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value219294886-67.3-29.43015523.8
Percentage of IncreaseDecreaseInLiabilityForClaimsAndClaimsAdjustmentExpenseReserve100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPremiumsReceivable

us-gaap:IncreaseDecreaseInPremiumsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value6966-54.7999999999999883-46.194-22.700000000000014
Percentage of IncreaseDecreaseInPremiumsReceivable100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInReinsuranceRecoverable

us-gaap:IncreaseDecreaseInReinsuranceRecoverable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value-16.2-5.0-3.0-6.72.7-9.84.2
Percentage of IncreaseDecreaseInReinsuranceRecoverable100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInUnearnedPremiums

us-gaap:IncreaseDecreaseInUnearnedPremiums


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value7797-66.5392175-29.5294675-47.6323336-18.1211021-18.3141.08.5-16.29.93.8-6.9-31.3-3.6-10.7-16.4-36.4-5.0-6.5-4.1-23.38.8-2.82.1-20.911-4.81.8-25.33.8-14.9-10.0
Percentage of IncreaseDecreaseInUnearnedPremiums100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value25500.01128200.07100.01271000.0763200.0458300.0-52200.0585300.0781800.0791000.032700.0769100.0526500.0365300.060700.0199600.0124900.0058600.0011300.00-1600.060200.078000.096500.0-5100.094600.0106600.0130200.07900.0135700.0110400.0110300.0-4900.0171900.0137500.0130400.0-2300.088000.00104400.0-2800.085400.098900.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0

us-gaap:InterestPaid

us-gaap:InterestPaid


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.4210.2160.4171.0184.3192.9192.8122.912108.3138.5138.3138.2147.8212.9210.2180.5180.1180.3181.8190.4180.3160.3
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInvestmentExpense

us-gaap:InvestmentIncomeInvestmentExpense


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value8.68.89.46.89.09.24.15.25.04.84.74.84.74.84.64.14.54.64.44.5
Percentage of InvestmentIncomeInvestmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInvestmentExpense us-gaap:InvestmentType

kmpr:OtherInvestment


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value6.56.77.15.66.36.61.72.72.72.42.52.22.1
Percentage of InvestmentIncomeInvestmentExpense75.676.175.582.470.071.741.551.954.050.053.245.844.7

us-gaap:RealEstateInvestment


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value2.12.12.31.22.72.62.42.52.32.42.22.62.6
Percentage of InvestmentIncomeInvestmentExpense24.423.924.517.630.028.358.548.146.050.046.854.255.3

us-gaap:LeaseCost

us-gaap:LeaseCost


Lease
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9.6999999999999985.15.35.75.44.55.65.9
Percentage of LeaseCost100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForFuturePolicyBenefitsPeriodExpense

us-gaap:LiabilityForFuturePolicyBenefitsPeriodExpense


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1224889863877747835814782825765772757499436
Percentage of LiabilityForFuturePolicyBenefitsPeriodExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1 us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value557258545471405257553492413223
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidCurrentYear1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1 us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value333500169226300505145154253445135172
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseClaimsPaidPriorYears1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1 us-gaap:ProductOrService

us-gaap:LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Liability
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1115777749772648739724699718666675667
Percentage of LiabilityForUnpaidClaimsAndClaimsAdjustmentExpenseIncurredClaims1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OciBeforeReclassificationsNetOfTaxAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Oci
Period End2021-03-312020-12-312020-09-302020-06-30
Value0.82.50.70.6
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent100.0100.0100.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Oci
Period End2021-03-312020-12-312020-09-302020-06-30
Value0.10.20.10.0
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent12.58.014.30.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value165-281.57857325
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.0-35187.53144.08142.954200.0

us-gaap:AccumulatedOtherComprehensiveIncome


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value165-282.38158325
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.0-35287.53244.08400.054200.0

us-gaap:AccumulatedOtherThanTemporaryImpairment


Oci
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value-0.2-1.7-0.21.0-0.6
Percentage of OciBeforeReclassificationsNetOfTaxAttributableToParent0.0-212.5-8.0142.9-100.0

us-gaap:OperatingLeaseCost

us-gaap:OperatingLeaseCost


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value5.95.15.05.15.25.65.24.35.55.7
Percentage of OperatingLeaseCost100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeaseExpense


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.76.19.6999999999999985.15.35.75.3999999999999994.55.66.0
Percentage of OperatingLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments

us-gaap:OperatingLeasePayments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value6.05.41.03.9105.34.94.55.45.2
Percentage of OperatingLeasePayments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax us-gaap:CreditLossStatus

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax

kmpr:CreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-0.3-2.1-0.21.3-0.8-2.90.00.0
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax100.0100.0100.0100.0100.0100.00.00.0

kmpr:NoCreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value190-364.010063408-201.9-35.1118159162
Percentage of OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax-63600.017333.3-50300.04853.8-51012.56962.10.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossBeforeTax

us-gaap:OtherComprehensiveIncomeLossBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value190-365.716865408-204.0-43.0118159163-11.6-48.8-60.0-121.15.4153426-183.8-7.9108102-38.15.5-177.857-90.64.49912221-26.9-228.2-42.8-50.052766.4-15.514352
Percentage of OtherComprehensiveIncomeLossBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax


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
Value100000.0100000.0100000.0200000.00100000.0100000.0200000.00100000.0100000.0900000.0-700000.0900000.0-100000.0-100000.0-4500000.0-2000000.01600000.0000
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value100000.0100000.0200000.0100000.00100000.0100000.0100000.00
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.0100.0100.00.0100.0100.0100.00.0

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value100000.0000100000.0000300000.0-200000.0200000.0-100000.00-1600000.0-700000.0600000.0000
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax100.00.00.00.0100.00.00.00.0100.0100.0100.0100.00.0100.0100.0100.00.00.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent us-gaap:StatementEquityComponents

us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.00.8530.70.6
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.0100.0100.0100.0100.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value0.10.10.20.10.0
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.012.50.414.30.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value152-289.27849322
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.0-36150.0147.67128.653733.3

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value152-290.013151322
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.0-36250.0247.67385.753733.3

us-gaap:AccumulatedOtherThanTemporaryImpairment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value-0.2-1.7-0.21.0-0.6
Percentage of OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent0.0-212.5-0.4142.9-100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-0.1-0.3-67.9-0.9-0.7-0.78.00.40.0-0.67.7-0.2-0.3-0.3-3.70.10.20.1-34.3-0.416-1.8-8.8-5.8-6.1-5.4104-2.0-1.9-2.0-68.2-6.3-6.7-5.425-4.4-3.2-4.451-2.1-2.5
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax

us-gaap:OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-0.10.5-14.8-0.2-0.1-0.21.80.00.1-0.21.60.0-0.10.0-0.80.10.10.0-12.1-0.25.7-0.7-3.1-2.1-2.2-1.7-23.9-2.3-2.3-1.98.9-1.6-1.1-1.618-0.6-0.9
Percentage of OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-15.9-9.8-0.40000000000000185-9.0-3.53.91.2-0.21412146.5-0.71.97.63.6195.11.12.9-1.7-2.5-5.22.331-3.6174.3-0.74.413-0.41.2242.650
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value-12600000.0-7700000.0-200000.0-7100000.0-2700000.0-3100000.0-1100000.0200000.0-11500000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value-3.3-2.1-0.2-1.9-0.80.80.10.03.12.63.01.3-0.10.42.61.36.61.80.31.1-0.6-0.9-1.90.911-1.36.01.5-0.21.54.5-0.10.48.40.917
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value0-800000.0-53100000.0-700000.0-600000.0-500000.06200000.0400000.0-100000.0
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax0.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeLossTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value38-75.7361385-42.8-9.0243334-2.4-10.2-12.7-25.4-2.65.7129.4-64.7-2.93836-13.41.8-62.820-31.91.634437.7-9.5-80.6-16.2-17.618272.3-5.45118-8.5-68.96543
Percentage of OtherComprehensiveIncomeLossTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax us-gaap:CreditLossStatus

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

kmpr:CreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-0.3-2.1-0.21.3-0.8-2.90.00.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax100.0100.0100.0100.0100.0100.00.00.0

kmpr:NoCreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value206-354.210172411-198.0-33.9118173175
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax-68900.016866.7-50500.05546.2-51450.06827.60.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax us-gaap:CreditLossStatus

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax

kmpr:CreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-30
Value-0.2-1.7-0.21.0-0.6-2.30.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.00.0

kmpr:NoCreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-30
Value165-281.57857325-156.4-26.893137
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax-82600.016558.8-39300.05700.0-54200.06800.00.00.00.0

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax us-gaap:CreditLossStatus

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax

kmpr:CreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-0.1-0.40.00.3-0.2-0.60.00.0
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax100.0100.00.0100.0100.0100.00.00.0

kmpr:NoCreditLosses


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value41-72.7221586-41.6-7.1243636
Percentage of OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax-41500.018175.00.05033.3-43200.06933.30.00.00.00.0

us-gaap:OtherCostAndExpenseOperating

us-gaap:OtherCostAndExpenseOperating


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312011-06-302010-06-30
Value314283279276272271265256263234273296171160-9.3-5.7
Percentage of OtherCostAndExpenseOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense us-gaap:ConsolidationItems

us-gaap:OtherNoncashIncomeExpense

us-gaap:MaterialReconcilingItems


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value5.21.60.11.13.1852.11.1211.23.135-0.4
Percentage of OtherNoncashIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherOperatingIncomeExpenseNet us-gaap:ConsolidationItems

us-gaap:OtherOperatingIncomeExpenseNet

us-gaap:CorporateNonSegment


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value-13800000.0-11500000.0-9700000.0-11000000.0-4700000.0-11100000.0-7300000.0-3100000.0-12400000.0-8600000.0-11400000.0-14300000.0-8400000.0
Percentage of OtherOperatingIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value3.24.0-0.51.07.0121.71.86.73.62.21.80.00.53.82.92.65.08.78.36.49.3143.32.27.06.53.84.10.87.63.41.01.92.83.20.40.54.65.01.30.43.84.64.93.2
Percentage of OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet us-gaap:ConsolidationItems

us-gaap:MaterialReconcilingItems


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value3.24.0-0.51.07.0121.71.86.73.62.21.80.00.53.82.92.65.08.78.36.49.3143.32.27.06.53.84.10.87.63.41.0
Percentage of OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:StatementEquityComponents

us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome, us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3.24.0-0.51.07.0121.61.96.73.62.21.80.00.53.82.92.65.08.28.36.49.3143.32.27.04.13.84.10.87.63.41.01.92.80.1
Percentage of OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet100.0100.0100.0100.0100.0100.094.1105.6100.0100.0100.0100.00.0100.0100.0100.0100.0100.094.3100.0100.0100.0100.0100.0100.0100.063.1100.0100.0100.0100.0100.0100.0100.0100.03.1

us-gaap:PaymentsForLossesAndLossAdjustmentExpense us-gaap:ProductOrService

us-gaap:PaymentsForLossesAndLossAdjustmentExpense

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value890758715698705762698646666668665607
Percentage of PaymentsForLossesAndLossAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-0.4-4.9-7.4-1.4-6.11.52.91.7-0.50.80.0-1.3-0.4-2.9-1.60.80.43.21.00.90.60.5-0.21.40.90.50.50.82.12.54.73.31.53.76.17.4118.4205.26.67.317101111
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromShortTermInvestments

us-gaap:PaymentsForProceedsFromShortTermInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value71-677.4242474-24.9-301.864-241.930053-404.3419-20.4-47.21.0103-114.9-29.3-50.5-41.0-2.2111-40.2-42.5-37.41529-163.9-26.8224-2.147-123.6363024-91.4116126-153.6-141.412-16.11132-35.2
Percentage of PaymentsForProceedsFromShortTermInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4635032831774383932712923533688928872254083081378717631024619010216320821792148178127987795264307298382551368626011919716195134141
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesEquity

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesEquity


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
Value2512-5.3151929058162420713428210511093613759251332191317921114014146777732240195744171777958.812230297.1
Percentage of PaymentsToAcquireAvailableForSaleSecuritiesEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireLifeInsurancePolicies

us-gaap:PaymentsToAcquireLifeInsurancePolicies


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312016-12-312015-12-312014-12-312013-12-31
Value0.01000.00.00.01001000.0500.00.00.00.00.00.00.00.0
Percentage of PaymentsToAcquireLifeInsurancePolicies0.0100.00.00.00.0100.0100.00.0100.00.00.00.00.00.00.00.00.0

us-gaap:PaymentsToAcquireMortgageNotesReceivable

us-gaap:PaymentsToAcquireMortgageNotesReceivable


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value313330125.94.6
Percentage of PaymentsToAcquireMortgageNotesReceivable100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToAcquireOtherInvestments


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2250255.53.29.2-20.3102.61.50.0-2.13.20.40.10.82.31.41.01.01.10.70.31.12.63.00.61.82.62.81.72.03.94.32.41.85.44.92.92.45.54.42.72.1
Percentage of PaymentsToAcquireOtherInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireRealEstateHeldForInvestment

us-gaap:PaymentsToAcquireRealEstateHeldForInvestment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1.10.20.00.40.00.10.20.60.20.40.50.6-0.30.70.20.30.40.60.40.50.40.90.70.30.20.60.20.60.50.80.52.21.71.01.81.01.61.12.41.11.01.91.70.50.31.4
Percentage of PaymentsToAcquireRealEstateHeldForInvestment100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PensionAndOtherPostretirementBenefitExpense us-gaap:Range, us-gaap:StatementScenario, us-gaap:SubsequentEventType

us-gaap:PensionAndOtherPostretirementBenefitExpense

srt:Maximum, srt:ScenarioForecast, us-gaap:SubsequentEvent


Pension
Period End2020-10-31
Value55
Percentage of PensionAndOtherPostretirementBenefitExpense100.0

srt:Minimum, srt:ScenarioForecast, us-gaap:SubsequentEvent


Pension
Period End2020-10-31
Value45
Percentage of PensionAndOtherPostretirementBenefitExpense81.8

us-gaap:PremiumReceivableCreditLossExpenseReversal

us-gaap:PremiumReceivableCreditLossExpenseReversal


Premium
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1012133.51511
Percentage of PremiumReceivableCreditLossExpenseReversal100.0100.0100.0100.0100.0100.0

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance

us-gaap:PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value102213139.111
Percentage of PremiumsReceivableAllowanceForDoubtfulAccountsWriteOffsAgainstAllowance100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value2000000.01700000.0400000.05000000.0-2700000.02700000.03300000.0-500000.0-400000.00-600000.00-100000.0-400000.00-100000.0100000.0100000.0100000.0300000.0200000.0500000.0600000.0200000.0200000.0500000.0600000.0100000.0500000.0400000.00500000.0200000.0400000.00500000.0400000.0500000.0200000.0400000.0400000.0400000.0800000.0700000.0800000.0900000.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfSecuredDebt

us-gaap:ProceedsFromRepaymentsOfSecuredDebt


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value71607568166156230126711871.40.0
Percentage of ProceedsFromRepaymentsOfSecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:ProceedsFromSaleAndCollectionOfMortgageNotesReceivable

us-gaap:ProceedsFromSaleAndCollectionOfMortgageNotesReceivable


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value17126.95.54.68.5
Percentage of ProceedsFromSaleAndCollectionOfMortgageNotesReceivable100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value4342912652242572251611085564025091526
Percentage of ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity

us-gaap:ProceedsFromSaleOfAvailableForSaleSecuritiesEquity


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
Value5427-2.1531037211717433916563903211139137535131334131641241816014343574562524402.6207.711941053710.0161.25.9
Percentage of ProceedsFromSaleOfAvailableForSaleSecuritiesEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfOtherInvestments

us-gaap:ProceedsFromSaleOfOtherInvestments


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value507.018148.04.03.8
Percentage of ProceedsFromSaleOfOtherInvestments100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfRealEstateHeldforinvestment

us-gaap:ProceedsFromSaleOfRealEstateHeldforinvestment


Proceeds
Period End2020-12-312020-09-302020-06-302020-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.00.03.51.90.00.00.00.00.511112.80.03.24.30.07.70.00.00.00.00.00.00.90.2980.03.86.00.00.00.00.00.10.00.29.60.0
Percentage of ProceedsFromSaleOfRealEstateHeldforinvestment0.00.0100.0100.00.00.00.00.0100.0100.0100.0100.00.0100.0100.00.0100.00.00.00.00.00.00.0100.0100.0100.00.0100.0100.00.00.00.00.0100.00.0100.0100.00.0

us-gaap:ProceedsFromStockPlans

us-gaap:ProceedsFromStockPlans


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1300000.01200000.01300000.01200000.0900000.01000000.0600000.01000000.0000
Percentage of ProceedsFromStockPlans100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent us-gaap:StatementEquityComponents

us-gaap:ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Reclassification
Period End2021-06-302020-06-30
Value-0.10.0
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent100.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value127.70.27.12.8
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-12600.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Reclassification
Period End2021-06-302021-03-312020-12-312020-09-302020-06-30
Value127.7-50.47.12.8
Percentage of ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent-12500.00.00.00.00.0

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:RetirementPlanType

us-gaap:RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty

kmpr:InvestmentManagementServicesforDefinedBenefitPlan, kmpr:FayezSarofimCo., us-gaap:PensionPlansDefinedBenefit


Related
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value100000.0200000.0200000.0200000.0200000.0300000.0200000.0200000.0
Percentage of RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings dei:LegalEntity, us-gaap:FederalHomeLoanBankAdvancesBranchOfFHLBBank

us-gaap:RepaymentsOfFederalHomeLoanBankBorrowings

kmpr:UnitedInsuranceCompanyOfAmerica, srt:FederalHomeLoanBankOfChicago


Repayments
Period End2021-06-302021-03-312020-12-31
Value9660111
Percentage of RepaymentsOfFederalHomeLoanBankBorrowings100.0100.0100.0

us-gaap:RepaymentsOfSecuredDebt

us-gaap:RepaymentsOfSecuredDebt


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value956111279763612514410310.02.50.0
Percentage of RepaymentsOfSecuredDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:RepaymentsOfSeniorDebt

us-gaap:RepaymentsOfSeniorDebt


Repayments
Period End2021-06-302021-03-31
Value0.050
Percentage of RepaymentsOfSeniorDebt0.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability


Right
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value152.32.80000000000000072.3999999999999995.8116.89.60.49.1
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ShortTermLeaseCost

us-gaap:ShortTermLeaseCost


Short
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value700000.0900000.000000100000.0
Percentage of ShortTermLeaseCost100.0100.00.00.00.00.00.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1300000.01200000.01300000.01200000.0900000.01000000.0900000.01000000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueEmployeeStockPurchasePlan us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value1300000.01200000.01300000.01200000.0900000.01000000.0900000.01000000.0
Percentage of StockIssuedDuringPeriodValueEmployeeStockPurchasePlan100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedAndRetiredDuringPeriodShares

us-gaap:CommonStock


Stock
Period End2021-06-30
Value1451000.0
Percentage of StockRepurchasedAndRetiredDuringPeriodShares100.0

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue

us-gaap:StockRepurchasedAndRetiredDuringPeriodValue


Stock
Period End2021-06-302020-06-30
Value1119.2
Percentage of StockRepurchasedAndRetiredDuringPeriodValue100.0100.0

us-gaap:StockRepurchasedDuringPeriodShares us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value1400000.0600000.000100000.01500000.0
Percentage of StockRepurchasedDuringPeriodShares100.0100.00.00.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockRepurchasedDuringPeriodValue


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value111470.00.09.2101
Percentage of StockRepurchasedDuringPeriodValue100.0100.00.00.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value40160.00.03.540
Percentage of StockRepurchasedDuringPeriodValue36.134.80.00.038.040.2

us-gaap:CommonStock


Stock
Period End2021-06-302020-12-312020-09-302020-06-302020-03-31
Value0.20.00.00.10.1
Percentage of StockRepurchasedDuringPeriodValue0.20.00.01.10.1

us-gaap:RetainedEarnings


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value71300.00.05.660
Percentage of StockRepurchasedDuringPeriodValue63.765.20.00.060.959.7

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense us-gaap:ProductOrService

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1032777741764630738739720731687
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersCurrentYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value820.18.18.8180.9-15.3-21.2-13.2-21.4-5.7-3.32.9-1.3-0.80.88.0100.3-4.4-19.22.6-3.8-2.4-6.5-7.4102-10.6-19.3-15.0112
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense us-gaap:ProductOrService

kmpr:Homeowners


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-1.6-2.60.92.2-0.2-5.0-6.1-0.41.71.40.51.10.1-0.30.1-1.9-4.1-8.9-5.1-2.0-4.2
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-1.9-2600.011.125.0-1.1-555.639.97.0-51.548.3-38.5-137.512.5-3.80.9-633.393.246.4-196.252.6175.0

kmpr:OtherPersonalLines


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-0.32.3-0.7-0.9-0.1-1.8-1.5-2.3-0.9-1.8-1.4-0.7-1.0-1.2-3.4-0.81.2-0.7-1.2-2.8-4.70.6-1.6-0.5
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense-0.42300.0-8.6-10.2-0.5-200.09.810.86.88.424.621.2-34.592.3425.0-100.015.0-6.4-400.063.624.523.142.120.8

kmpr:PreferredAutomobile


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3.41.39.55.79.42.1-2.6-0.6-3.7-1.3-2.2-2.6-1.50.5
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense4.11300.0117.364.850.5233.317.02.828.06.138.678.8-51.7-38.5

kmpr:SpecialtyAutomobile


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value76-4.0-3.12.0111843-1.6-3.7-14.32.4-1.1
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense91.9-4000.0-38.322.760.82000.0-283.77.528.066.8-42.133.3

us-gaap:PropertyAndCasualtyCommercialInsuranceProductLine


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value5.3000000000000013.01.5-0.2-1.7-12.5-1.8-2.3-5.0-3.8-4.3-0.5-0.3-1.0-2.6-1.31.71.6-0.60.9-1.7-2.5-4.01.6-4.60.27.1-0.70.1-0.3-1.3
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense6.43000.018.5-2.3-9.1-1388.911.810.837.917.875.415.2-10.376.9325.0-162.521.214.7-200.0-20.58.9-96.2105.3-66.770.8-2.77.06.6-0.52.0-1.2

us-gaap:PropertyLiabilityAndCasualtyInsuranceSegment


Supplemental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value820.18.18.8180.9-15.3-21.2-13.2-21.4-5.7-3.3
Percentage of SupplementalInformationForPropertyCasualtyInsuranceUnderwritersPriorYearClaimsAndClaimsAdjustmentExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockAcquiredAverageCostPerShare


Treasury
Period End2021-03-312020-12-312020-09-302020-06-302020-03-31
Value79.360071.8567.98
Percentage of TreasuryStockAcquiredAverageCostPerShare100.00.00.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare us-gaap:StatementEquityComponents

us-gaap:CommonStock


Treasury
Period End2021-06-302020-06-302020-04-302020-03-31
Value76.9271.8571.8567.98
Percentage of TreasuryStockAcquiredAverageCostPerShare0.0100.00.0100.0

us-gaap:VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax

us-gaap:VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax


Variable
Period End2021-06-302021-03-31
Value-7700000.0-15400000.0
Percentage of VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax100.0100.0

us-gaap:VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, kmpr:LifeAndHealthInsurance


Variable
Period End2021-06-302021-03-31
Value-2000000.0-4000000.0
Percentage of VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax26.026.0

us-gaap:OperatingSegments, kmpr:PreferredPropertyCasualtyInsurance


Variable
Period End2021-06-302021-03-31
Value-2000000.0-4100000.0
Percentage of VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax26.026.6

us-gaap:OperatingSegments, kmpr:SpecialtyPropertyCasualtyInsurance


Variable
Period End2021-06-302021-03-31
Value-3700000.0-7300000.0
Percentage of VariableInterestEntityActivityBetweenVIEAndEntityIncomeOrLossBeforeTax48.147.4

us-gaap:VariableLeaseCost

us-gaap:VariableLeaseCost


Variable
Period End2021-06-30
Value100000.0
Percentage of VariableLeaseCost100.0

kmpr:DeferredTaxAssetsTaxDeferredExpenseTaxCapitalizationofPolicyAcquisitionCosts

kmpr:DeferredTaxAssetsTaxDeferredExpenseTaxCapitalizationofPolicyAcquisitionCosts


Deferred
Period End2020-12-312019-12-312018-12-31
Value464444
Percentage of DeferredTaxAssetsTaxDeferredExpenseTaxCapitalizationofPolicyAcquisitionCosts100.0100.0100.0

kmpr:DeferredTaxLiabilitiesLifeVIFandPCCustomerRelationshipsAcquired

kmpr:DeferredTaxLiabilitiesLifeVIFandPCCustomerRelationshipsAcquired


Deferred
Period End2020-12-312019-12-312018-12-31
Value5000000.05300000.06000000.0
Percentage of DeferredTaxLiabilitiesLifeVIFandPCCustomerRelationshipsAcquired100.0100.0100.0

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsNextTwelveMonths us-gaap:RetirementPlanType

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsNextTwelveMonths

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value1300000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsNextTwelveMonths100.0

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFive us-gaap:RetirementPlanType

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value1200000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFive100.0

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFour us-gaap:RetirementPlanType

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFour

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value1300000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearFour100.0

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearThree us-gaap:RetirementPlanType

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearThree

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value1300000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearThree100.0

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearTwo us-gaap:RetirementPlanType

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearTwo

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value1300000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsYearTwo100.0

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsafterYearFive us-gaap:RetirementPlanType

kmpr:DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsafterYearFive

us-gaap:OtherPostretirementBenefitPlansDefinedBenefit


Defined
Period End2020-12-31
Value4600000.0
Percentage of DefinedBenefitPlanExpectedFutureBenefitPaymentsExcludingPrescriptionDrugSubsidyReceiptsafterYearFive100.0

kmpr:DividendsToShareholdersThatCanBePaidByParentCompanyWithoutRestrictions

kmpr:DividendsToShareholdersThatCanBePaidByParentCompanyWithoutRestrictions


Dividends
Period End2020-12-31
Value1500
Percentage of DividendsToShareholdersThatCanBePaidByParentCompanyWithoutRestrictions100.0

kmpr:InvestmentInConvertibleBonds

kmpr:InvestmentInConvertibleBonds


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value4342393635323735343331
Percentage of InvestmentInConvertibleBonds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:MortgageLoansonRealEstateandOther

kmpr:MortgageLoansonRealEstateandOther


Mortgage
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-31
Value867455373227
Percentage of MortgageLoansonRealEstateandOther100.0100.0100.0100.0100.0100.0

kmpr:OtherShorttermInvestmentsFairValueDisclosure

kmpr:OtherShorttermInvestmentsFairValueDisclosure


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value370196875628154166470
Percentage of OtherShorttermInvestmentsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0

kmpr:OutstandingCommitmentsToFundEquityMethodLimitedLiabilityInvestments

kmpr:OutstandingCommitmentsToFundEquityMethodLimitedLiabilityInvestments


Outstanding
Period End2020-12-312020-09-30
Value17296
Percentage of OutstandingCommitmentsToFundEquityMethodLimitedLiabilityInvestments100.0100.0

kmpr:OutstandingCommitmentsToFundEquityMethodLimitedLiabilityInvestments us-gaap:EquityMethodInvestmentNonconsolidatedInvestee, us-gaap:InvestmentType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, kmpr:EquityMethodLimitedLiabilityInvestments


Outstanding
Period End2021-06-302021-03-31
Value9194
Percentage of OutstandingCommitmentsToFundEquityMethodLimitedLiabilityInvestments0.00.0

kmpr:PercentageofUnrealizedLossPositiontoAmortizedCostBasisofAvailableforSaleSecurityAverage us-gaap:ExternalCreditRatingByGrouping, us-gaap:FinancialInstrument

kmpr:PercentageofUnrealizedLossPositiontoAmortizedCostBasisofAvailableforSaleSecurityAverage

us-gaap:ExternalCreditRatingNonInvestmentGrade, us-gaap:DebtSecurities


Percentageof
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value8.09.011.011.00.120.170.050.060.030.05
Percentage of PercentageofUnrealizedLossPositiontoAmortizedCostBasisofAvailableforSaleSecurityAverage100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

kmpr:SharebasedCompensationArrangementbySharebasedPaymentAwardDeferredStockUnitsOutstandingWeightedAverageExercisePrice

kmpr:SharebasedCompensationArrangementbySharebasedPaymentAwardDeferredStockUnitsOutstandingWeightedAverageExercisePrice


Sharebased
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value44.7444.7444.8935.5432.6836.1736.1736.1734.5234.5234.5234.5231.5
Percentage of SharebasedCompensationArrangementbySharebasedPaymentAwardDeferredStockUnitsOutstandingWeightedAverageExercisePrice100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:LifeInsuranceInForceAssumed

srt:LifeInsuranceInForceAssumed


Life
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value152162172184195
Percentage of LifeInsuranceInForceAssumed100.0100.0100.0100.0100.0

srt:LifeInsuranceInForceCeded

srt:LifeInsuranceInForceCeded


Life
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value387411436455486
Percentage of LifeInsuranceInForceCeded100.0100.0100.0100.0100.0

srt:LifeInsuranceInForceGross

srt:LifeInsuranceInForceGross


Life
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1970619479194351920820889
Percentage of LifeInsuranceInForceGross100.0100.0100.0100.0100.0

srt:LifeInsuranceInForceNet

srt:LifeInsuranceInForceNet


Life
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value1947019231191711893720597
Percentage of LifeInsuranceInForceNet100.0100.0100.0100.0100.0

srt:LifeInsuranceInForcePercentageAssumedToNet

srt:LifeInsuranceInForcePercentageAssumedToNet


Life
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value0.80.0080.0090.010.009
Percentage of LifeInsuranceInForcePercentageAssumedToNet100.0100.0100.0100.0100.0

us-gaap:AccruedInvestmentIncomeReceivable

us-gaap:AccruedInvestmentIncomeReceivable


Accrued
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value7778777270686566727672
Percentage of AccruedInvestmentIncomeReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AccruedLiabilitiesAndOtherLiabilities


Accrued
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value859793727677759783733751741687
Percentage of AccruedLiabilitiesAndOtherLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AccruedLiabilitiesAndOtherLiabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Accrued
Period End2020-12-312019-12-312018-12-31
Value591920
Percentage of AccruedLiabilitiesAndOtherLiabilities8.22.62.9

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax


Accumulated
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value-2300000.0-2600000.0-2600000.0-2700000.0-2900000.0-2900000.0-2900000.0-3000000.0-3200000.0-3800000.0-3300000.0-3300000.0-3300000.0-3200000.0-300000.01000000.00
Percentage of AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax


Accumulated
Period End2020-12-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value4599100100949494948888897275757574979787889397101105373840418589949781848688555659
Percentage of AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AlternativeInvestmentMeasurementInput us-gaap:Range, us-gaap:ExternalCreditRatingByGrouping, us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType, us-gaap:ValuationTechnique

us-gaap:AlternativeInvestmentMeasurementInput

srt:Maximum, us-gaap:ExternalCreditRatingInvestmentGrade, us-gaap:PrivatePlacement, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputDiscountRate, us-gaap:MarketApproachValuationTechnique


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9.412.013.015.10.0960.10.0850.1020.1040.1070.1090.1050.0890.067
Percentage of AlternativeInvestmentMeasurementInput100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:Minimum, us-gaap:ExternalCreditRatingInvestmentGrade, us-gaap:PrivatePlacement, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputDiscountRate, us-gaap:MarketApproachValuationTechnique


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value0.90.91.41.10.0130.0240.0240.0250.0280.0280.0370.030.0290.03
Percentage of AlternativeInvestmentMeasurementInput9.67.510.87.313.524.028.224.526.926.233.928.632.644.8

srt:WeightedAverage, us-gaap:ExternalCreditRatingInvestmentGrade, us-gaap:PrivatePlacement, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputDiscountRate, us-gaap:MarketApproachValuationTechnique


Alternative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3.23.43.84.00.040.0430.0410.0430.0420.0460.0520.050.0460.038
Percentage of AlternativeInvestmentMeasurementInput34.028.329.226.541.743.048.242.240.443.047.747.651.756.7

us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries us-gaap:ConsolidatedEntities

us-gaap:AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries

srt:Subsidiaries


Amount
Period End2020-12-31
Value4400
Percentage of AmountOfRestrictedNetAssetsForConsolidatedAndUnconsolidatedSubsidiaries100.0

us-gaap:AssetsFairValueDisclosure us-gaap:ExternalCreditRatingByGrouping, us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:ValuationTechnique

us-gaap:AssetsFairValueDisclosure

us-gaap:ExternalCreditRatingInvestmentGrade, us-gaap:PrivatePlacement, us-gaap:FairValueInputsLevel3, us-gaap:MarketApproachValuationTechnique


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value263251246232222186204249174169146136117104969397111106102103969810910210910711311411310811594
Percentage of AssetsFairValueDisclosure100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ExternalCreditRatingNonInvestmentGrade, us-gaap:JuniorSubordinatedDebt, us-gaap:FairValueInputsLevel3, us-gaap:MarketApproachValuationTechnique


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value6859648178778182861108790103144154119128133143184224215216202181159149129138153153146173
Percentage of AssetsFairValueDisclosure26.023.526.235.035.141.739.833.049.765.259.766.788.1138.9160.2128.2131.9120.1135.1181.1216.4222.9219.1184.7176.8146.2140.1114.2121.2135.7141.5126.3183.1

us-gaap:ExternalCreditRatingNonInvestmentGrade, us-gaap:SeniorDebtObligations, us-gaap:FairValueInputsLevel3, us-gaap:MarketApproachValuationTechnique


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-31
Value6095111154139118123117149124142151148128138161160136142145115107114107111939287118104936577
Percentage of AssetsFairValueDisclosure22.937.945.066.363.063.460.647.085.273.697.0111.2126.3123.1143.6173.2164.3122.4134.0142.1111.2110.9115.798.0108.785.686.676.8103.692.786.556.982.1

us-gaap:AssetsFairValueDisclosure us-gaap:FairValueByAssetClass, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:ValuationTechnique

us-gaap:DebtSecurities, us-gaap:FairValueInputsLevel3, us-gaap:MarketApproachValuationTechnique


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value4614294494984684851044994965950897860481519494482491489511554568521531511486455435414445435364349351343361
Percentage of AssetsFairValueDisclosure175.0170.5182.1213.8210.8260.9511.4398.2552.1560.6611.7631.0410.1499.4514.3518.7504.7439.3481.7542.8549.0540.8538.2466.8473.2417.4407.1364.9388.9385.2335.6302.00.00.0381.6

us-gaap:OtherDebtSecurities, us-gaap:FairValueInputsLevel3, us-gaap:MarketApproachValuationTechnique


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value682326292825218.6151715141614131510121610232014171923212123198.221161115
Percentage of AssetsFairValueDisclosure26.19.110.912.612.713.910.53.48.810.110.810.614.014.213.716.810.610.915.110.622.620.814.916.319.221.520.218.920.917.07.618.80.00.016.4

us-gaap:AssetsNet us-gaap:ConsolidatedEntities

us-gaap:AssetsNet

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assets
Period End2021-06-302021-03-31
Value15762
Percentage of AssetsNet100.0100.0

us-gaap:AssetsUnderManagementCarryingAmount us-gaap:RelatedPartyTransaction, us-gaap:RelatedPartyTransactionsByRelatedParty, us-gaap:RetirementPlanType

us-gaap:AssetsUnderManagementCarryingAmount

kmpr:InvestmentManagementServicesforDefinedBenefitPlan, kmpr:FayezSarofimCo., us-gaap:PensionPlansDefinedBenefit


Assets
Period End2020-12-312020-09-302019-12-312018-12-312017-12-31
Value6472149124171
Percentage of AssetsUnderManagementCarryingAmount100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value767609948870827515570226380324341455284
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax us-gaap:FinancialInstrument

kmpr:OtherMortgageandAssetbackedSecurities


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
Value16112120157.22.12.21.71.30.91.00.70.7
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax2.11.92.32.41.91.40.40.00.00.00.40.00.00.2

us-gaap:CollateralizedLoanObligations


Available
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2.42.42.31.81.20.82.11.22.11.51.52.93.05.7
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax0.30.40.20.20.10.20.40.00.00.00.70.00.01.5

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
Value543419689611573314401410320216135145157245
Percentage of AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax70.868.872.770.369.361.070.50.00.00.059.70.00.064.6

us-gaap:DebtSecurities


Available
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value948570605482340226222251380
Per