PFG


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

Table of contents



us-gaap:CommonStockValue
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding

us-gaap:CommonStockSharesIssued
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:CommonStockSharesOutstanding
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:BenefitsLossesAndExpenses
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:GainLossOnInvestments
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:IncomeTaxExpenseBenefit
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetIncomeLoss
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetInvestmentIncome
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:PremiumsEarnedNet
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

us-gaap:ProfitLoss
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:Subsegments

us-gaap:Revenues
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:Assets
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:ConsolidatedEntities, us-gaap:InvestmentType
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:StatementBusinessSegments

us-gaap:Liabilities
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:LiabilitiesAndStockholdersEquity
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:StockholdersEquity
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:CashAndCashEquivalentsAtCarryingValue
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:Goodwill
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:EquitySecuritiesFvNi
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:OtherAssets
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:LongTermDebt
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:DebtInstrument
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:DeferredIncomeTaxLiabilitiesNet
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:IncomeTaxAuthority

us-gaap:MinorityInterest
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:EquityMethodInvestmentNonconsolidatedInvestee
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

us-gaap:AdditionalPaidInCapital
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:RetainedEarningsAccumulatedDeficit
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:TreasuryStockValue
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:MinorityInterest
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInInvestingActivities
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInOperatingActivities
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetIncomeLoss
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:ProfitLoss
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInInvestingActivities
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:NetCashProvidedByUsedInFinancingActivities
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:ProceedsFromIssuanceOfLongTermDebt
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:RepaymentsOfLongTermDebt
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:PaymentsOfDividendsCommonStock
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:PaymentsForRepurchaseOfCommonStock
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:EffectiveIncomeTaxRateContinuingOperations
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
us-gaap:AwardType, us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRange
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:ProceedsFromRepaymentsOfShortTermDebt
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementEquityComponents
pfg:AdjustmentsForAssumedChangesInAmortizationPatternsBeforeTax
us-gaap:StatementEquityComponents
pfg:AdjustmentsForAssumedChangesInAmortizationPatternsNetOfTax
us-gaap:StatementEquityComponents
pfg:AdjustmentsForAssumedChangesInAmortizationPatternsTax
us-gaap:StatementEquityComponents
pfg:AdjustmentsForAssumedChangesInLiabilityForPolicyholderBenefitsAndClaimsBeforeTax
us-gaap:StatementEquityComponents
pfg:AdjustmentsForAssumedChangesInLiabilityForPolicyholderBenefitsAndClaimsNetOfTax
us-gaap:StatementEquityComponents
pfg:AdjustmentsForAssumedChangesInLiabilityForPolicyholderBenefitsAndClaimsTax

pfg:AdjustmentsToRedemptionAmountOfRedeemableNoncontrollingInterest
us-gaap:StatementEquityComponents

pfg:AvailableForSaleDebtSecuritiesHedgingNet

pfg:CapitalGainsLossesDistributed
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
pfg:CapitalReceivedFromDividendsPaidToParent
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ContributionsToRedeemableNoncontrollingInterest

pfg:DebtSecuritiesAvailableForSaleNetCreditLoss

pfg:DeferredAcquisitionCostAndOtherActuarialBalancesAmortizationExpense

pfg:DefinedBenefitPlanDecreaseInOtherAssetsDueToReclassificationOfExcessAssetsOutOfFundedStatus

pfg:DefinedBenefitPlanDecreaseInOtherComprehensiveIncomeLossDueToReclassificationOfExcessAssetsOutOfFundedStatus

pfg:DefinedBenefitPlanDecreaseInTaxReceivableRedesignationFromFundedStatus

pfg:DefinedBenefitPlanIncreaseInEquitySecuritiesRedesignationFromFundedStatus

pfg:DefinedBenefitPlanIncreaseInOtherInvestmentRedesignationFromFundedStatus

pfg:DerivativeAndHedgingRelatedAdjustments

pfg:DistributionsToRedeemableNoncontrollingInterest
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
pfg:DividendsReceivedFromContributionsToUnconsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:EffectiveIncomeTaxRateReconciliationLocalCountryPermanentTaxAdjustmentsPercent
us-gaap:PlanName
pfg:EmployeeStockPurchasePlanWeightedAverageFairValueOfDiscount

pfg:EquityMethodInvestmentsRelatedAdjustments
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentSecondaryCategorization
pfg:FairValueAssetsLevel2ToLevel3TransfersAmount
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentSecondaryCategorization
pfg:FairValueAssetsLevel3ToLevel2TransfersAmount
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency
pfg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarningsRelatingToPositionsStillHeld
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency
pfg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome
us-gaap:FairValueByAssetClass, us-gaap:FairValueByMeasurementFrequency, us-gaap:InvestmentSecondaryCategorization
us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency
pfg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisIssuesNet
us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency
pfg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesGainLossIncludedInEarningsRelatingToPositionsStillHeld
us-gaap:FairValueByLiabilityClass, us-gaap:FairValueByMeasurementFrequency
pfg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitiesGainLossIncludedInOtherComprehensiveIncomeRelatingToPositionsStillHeld
us-gaap:FairValueByMeasurementFrequency
pfg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetDerivativeAssetsGainLossIncludedInEarningsRelatingToPositionsStillHeld
us-gaap:FairValueByMeasurementFrequency
pfg:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisNetDerivativeAssetsLiabilitiesGainLossIncludedInEarningsRelatingToPositionsStillHeld
us-gaap:FairValueByMeasurementFrequency
pfg:FairValueNetDerivativeAssetLiabilityLevel3ToLevel2TransfersAmount
us-gaap:ConsolidationItems
pfg:FeesAndOtherRevenuesNotWithinScopeOfRevenueRecognitionGuidance
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

pfg:FinancingReceivableAllowanceForCreditLossesTranslationAdjustment
us-gaap:FinancingReceivablePortfolioSegment

pfg:FrontEndFeeRevenuesRecognition

pfg:GainLossOnMortgageLoans

pfg:IncomeLossFromContinuingOperationsBeforeIncomeTaxes
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:StatementBusinessSegments
pfg:InterSegmentRevenue

pfg:InvestmentAdvisoryAssetManagementAndInsuranceFeesAndCommissions
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

pfg:MarketValueAdjustmentsEmbeddedDerivatives

pfg:MarketValueAdjustmentsFeeRevenues

pfg:MinorityInterestIncreaseFromContributionsFromNoncontrollingInterest
us-gaap:StatementEquityComponents

pfg:NetRealizedCapitalGainLossOnSaleOfDerivatives

pfg:OperatingExpensesIncludingDeferredAcquisitionCostsCapitalizationAndAmortization
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
pfg:OperatingRevenues
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments, us-gaap:Subsegments

pfg:OtherComprehensiveIncomeAvailableForSaleSecuritiesPeriodIncreaseDecreaseNetOfTax

pfg:OtherComprehensiveIncomeDerivativesPeriodIncreaseDecreaseNetOfTax

pfg:OtherComprehensiveIncomeLossAttributableToRedeemableNoncontrollingInterest

pfg:OtherComprehensiveIncomeLossNetOfTaxExcludingRedeemableNoncontrollingInterest
us-gaap:StatementEquityComponents

pfg:PaymentsToAcquirePropertyPlantAndEquipmentNet
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
pfg:PeriodicSettlementOnDerivatives
us-gaap:ConsolidationItems
pfg:PreTaxOtherAdjustmentsInReconcilingSegmentRevenuesToConsolidatedIncome
us-gaap:ConsolidationItems
pfg:PretaxOperatingEarnings
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

pfg:ProceedsFromMaturitiesRepaymentsAndCallsOfDebtSecuritiesAvailableForSaleAndEquitySecuritiesFvNi
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ProceedsFromSaleOfDebtSecuritiesAvailableForSaleAndEquitySecuritiesFvNi
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:PurchaseOfSubsidiarySharesFromRedeemableNoncontrollingInterest

pfg:RedeemableNoncontrollingInterestChangeInShareBasedCompensation

pfg:RedeemableNoncontrollingInterestDecreaseFromDeconsolidation
us-gaap:ConsolidationItems
pfg:SegmentReportingInformationEarningsAdjustmentsRelatedToEquityMethodInvestmentsAndNoncontrollingInterest

pfg:SegmentReportingInformationNetRealizedCapitalGainsLosses
us-gaap:ConsolidationItems

pfg:SegmentReportingInformationPretaxNetRealizedCapitalGainsLossesNetOfAdjustments
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems
pfg:SegmentReportingInformationRevenueAdjustmentsRelatedToEquityMethodInvestments
us-gaap:AwardType
pfg:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsUpperLimitMultipleOfInitialTargetBasedOnPerformance
us-gaap:PlanName
pfg:ShareBasedCompensationArrangementShareBasedPaymentAwardAmountCapitalized

pfg:SponsoredInvestmentFundsRelatedAdjustments

pfg:StockBasedCompensation
us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
pfg:TreasuryStockAcquiredRepurchaseAuthorizationAmount

pfg:UnrealizedGainsLossesOnEquitySecuritiesFvNiReportedInNetInvestmentIncome

pfg:ValueOfAssetsReceivedInKindForPensionRiskTransferTransactions

us-gaap:AdditionsToContractHoldersFunds
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:CapitalizedContractCostAmortization

us-gaap:CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:ChangeInUnrealizedGainLossOnFairValueHedgingInstruments1
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1
us-gaap:StatementEquityComponents
us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DebtSecuritiesAvailableForSaleAccruedInterestWriteoff
us-gaap:FinancialInstrument

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:DebtSecuritiesAvailableForSaleRealizedGain

us-gaap:DebtSecuritiesAvailableForSaleRealizedLossExcludingOtherThanTemporaryImpairment

us-gaap:DebtSecuritiesTradingGainLoss

us-gaap:DebtSecuritiesTradingUnrealizedGainLoss

us-gaap:DefinedBenefitPlanActualReturnOnPlanAssets
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfGainsLosses
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanAmortizationOfPriorServiceCostCredit

us-gaap:DefinedBenefitPlanAssetsTransferredToFromPlan

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

us-gaap:DefinedBenefitPlanPlanAssetsBenefitsPaid

us-gaap:DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant
us-gaap:RetirementPlanType
us-gaap:DefinedBenefitPlanServiceCost
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:IncomeStatementLocation
us-gaap:DerivativeFairValueHedgeIncludedInEffectivenessGainLoss

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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
dei:LegalEntity
us-gaap:StatutoryAccountingPracticesStatutoryAmountAvailableForDividendPaymentsWithoutRegulatoryApproval

us-gaap:StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:InvestmentType

us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCost
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:InvestmentType
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue
us-gaap:InvestmentType

us-gaap:TradingSecuritiesDebt
pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency

us-gaap:TreasuryStockShares
us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount
us-gaap:InvestmentType

Plots across concepts


IncomeStatement
Net Income Loss
Balance Sheet
Operating Lease Liability
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Deferred Income Tax Assets Net
Liabilities
Operating Lease Liability
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Common Stock Value
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Net Income Loss
NetCashProvidedByUsedInInvestingActivities
Payments For Proceeds From Other Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Treasury Stock Shares
DividendsAndRepurchase
Dividends Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Undiscounted Excess Amount
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Accumulated Amortization

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CommonStockValue █████████████▆▆▆▆▆▆▆▆▆▆▆▃▃▃▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁4.84.84.84.84.84.84.84.84.84.84.84.84.84.74.74.74.74.74.74.74.74.74.74.74.64.64.64.64.64.64.64.64.64.64.54.54.54.54.54.54.54.54.5NANANA4.5NANANA
 us-gaap:SharesOutstanding us-gaap:StatementEquityComponents us-gaap:CommonStock▁▁▂▂▂▂▂▂▂▂▂▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▄▄▄▄▄▅▅▅▆▇████269.0272.5273.3274.5274.0273.4276.6278.0278.6278.2279.5283.6284.6287.7289.0288.5288.6288.1287.7287.7288.0290.4291.4293.5294.7294.4293.9293.6293.8294.8295.2293.9293.9293.3293.8293.6295.6300.9301.1305.1313.7321.3320.4320.3319.8NA319.0NANANA
us-gaap:CommonStockSharesIssued ████▇▇▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▄▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▁▁▁▁▁484.0483.3481.9481.7481.1480.5479.3479.1478.9478.5476.7476.4476.3476.0474.1473.5472.8471.9469.2468.7468.1468.1466.2466.0465.0464.7462.7462.4461.2460.9459.3458.0456.5455.9453.5453.3452.6452.4450.3450.2449.7449.6448.5NANANA447.0NANANA
us-gaap:CommonStockSharesOutstanding ▁▁▂▂▂▂▂▂▂▂▂▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▅▄▄▄▄▄▅▅▅▆▇██269.0272.5273.3274.5274.0273.4276.6278.0278.6278.2279.5283.6284.6287.7289.0288.5288.6288.1287.7287.7288.0290.4291.4293.5294.7294.4293.9293.6293.8294.8295.2293.9293.9293.3293.8293.6295.6300.9301.1305.1313.7321.3320.4NANANA319.0NANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█275.1276.0NA276.8275.6277.2NA281.4281.2280.9NA287.8289.2292.9NA293.1292.7292.4NA291.4292.6294.3NA298.5298.4298.5NA298.2298.3299.5NA298.6297.2297.1NA297.5301.9304.7NA314.8323.2324.7NA323.3322.9322.1NANANANA
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█271.3272.9NA274.8274.3275.0NA279.0279.0278.7NA284.9286.4289.4NA289.3288.9288.3NA288.1289.9291.5NA295.0295.0294.8NA294.2294.7295.8NA294.9294.1294.1NA294.7299.4301.8NA311.9320.0321.3NA320.7320.1319.8NANANANA
us-gaap:EarningsPerShareBasic ▄▅▅▃▄▃▃▃▄▄▃▅▅▄██▃▄▃▃▃▄▃▃▃▄▃▂▃▃▃▃▂▂▂▂▂▂▂▁▃▂▂▂▂▂▂▂▂▂1.341.891.720.861.451.051.080.991.381.540.841.61.591.372.912.81.071.211.11.071.111.260.871.020.821.410.920.781.040.960.790.830.760.610.740.610.580.670.540.20.810.610.620.440.420.60.440.580.520.43
us-gaap:EarningsPerShareDiluted ▄▅▅▃▄▃▃▃▄▄▃▅▅▄██▃▄▃▃▃▄▃▃▃▄▃▂▃▃▃▃▂▂▂▂▂▂▂▁▃▂▂▂▂▂▂▂▂▂1.321.871.70.851.451.041.070.981.371.530.831.591.581.362.872.761.061.191.091.061.11.250.861.010.811.390.910.771.030.950.780.820.750.610.740.60.580.660.540.20.80.60.620.440.420.590.440.570.520.43
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
 Net profit Margin pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNANA-2.2-0.31.0-0.10.60.1-0.8-1.2-2.4-0.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNANA3690.83212.63004.24442.73938.64339.93965.93730.43767.34344.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNANA71.195.1106.4100.1102.2112.6-2.34.4-6.42.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNANA5.43.33.08.65.85.89.810.312.12.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNA-3.1NANANA-2.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNA3137.2NANANA4445.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNA83.2NANANA100.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:BenefitsLossesAndExpenses ▅▃▅▅▃█▆█▆▅▆▇▄▃▄▆▄▃▅▃▃▃▃▄▄▂▃▂▂▂▃▁▁▁▂▃▁▁▁▁▁▁▂▂▂▂▂▂▁▂3106.82594.63173.53035.62616.04223.13675.94112.73522.33217.93527.73779.02719.52426.62922.93470.02812.72635.43132.52447.32625.82596.82498.02871.72964.72199.22590.82090.52199.22102.22362.71919.31945.01938.52030.02523.31883.61818.81865.41950.61969.71936.32108.82125.02075.82007.72062.92022.01959.92058.5
us-gaap:ComprehensiveIncomeNetOfTax ▆▂▆▄█▁▄▅▆▆▄▄▃▃▅▅▅▅▃▄▅▅▃▄▃▄▃▄▅▄▄▄▃▄▃▄▄▄▃▃▄▄1211.8-912.21108.6532.42448.2-1348.231.7936.51452.91576.119.0248.2-212.0-339.9960.3973.3648.5569.0-449.0419.3659.1903.7-104.5103.0-93.6406.5-51.029.6552.2480.5442.6236.7-390.9167.2-22.0518.2243.8439.8-47.3-199.1400.9449.5NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▅▃█▅▇▁▆▄▆█▂▄▃▅▄▅▅▅▇▇▅▄▄▁▅▄▃▃▅▇▄▄▃▄▄▄▄▅▃▂█▇9.6-1.021.79.916.0-13.115.04.411.522.7-5.93.1-0.86.32.05.05.05.719.218.87.04.73.2-13.88.90.4-2.9-2.76.420.24.24.4-2.42.43.74.22.110.0-0.6-5.923.618.6NANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▆▂▆▄█▁▄▅▆▆▄▄▃▃▅▅▅▅▃▄▅▅▃▄▃▄▃▄▅▄▄▄▃▄▃▄▄▄▃▃▄▄▄▅▄▅1221.4-913.21130.3542.32464.2-1361.346.7940.91464.41598.813.1251.3-212.8-333.6962.3978.3653.5574.7-429.8438.1666.1908.4-101.389.2-84.7406.9-53.926.9558.6500.7446.8241.1-393.3169.6-18.3522.4245.9449.8-35.7-223.6463.2476.213.8953.8370.9657.2NANANANA
us-gaap:GainLossOnInvestments ▂▃▃▃▂▃▁▂▂▃▁▂▃▂▂█▁▂▂▂▂▃▂▂▁▃▂▂▃▂▂▂▁▂▂▃▂▂▁▂▂▂▁▂▁▂-41.1151.4133.165.5-27.4131.4-90.9-42.4-4.084.5-112.2-5.567.4-25.1-39.9676.6-95.9-16.6-43.444.233.7136.6-41.138.4-114.666.2-26.3-46.486.80.6-43.3-50.9-80.1-50.932.987.70.2-6.7-71.3-30.737.7-58.0-58.9-20.7-66.4-45.5NANANANA
 us-gaap:GainLossOnInvestments pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNANA-0.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNANA139.59999999999997NANANA-92.9-54.9-7.272.6-110.5-4.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNANA-8.300000000000004NANANA1.510.1-0.76.6-4.81.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNANA2.0NANANA0.72.43.95.33.1-2.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNA152.6NANANA120.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNA13.1NANANA5.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNA-14.3NANANA5.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ForeignExchangeContract,us-gaap:CashFlowHedging,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.7NA-0.10.24.02.20.00.09.5NA10.22.30.6-0.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:ForeignExchangeContract,us-gaap:NetInvestmentHedging,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeNANA0.0-7.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:DerivativeInstrumentRisk,us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:InterestRateContract,us-gaap:CashFlowHedging,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeNANA0.00.13.9-1.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:GainLossOnInvestments us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome us-gaap:NetInvestmentHedging,us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncomeNANA0.0-7.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeTaxExpenseBenefit ▆▆▆▆▆▆▆▆▆▆▅▆▆▆▁█▆▆▆▆▆▆▆▆▅▅▆▆▆▆▆▆▅▆▆▅▆▆▅▆▆▆▆▅▅▆61.097.6100.139.282.543.256.061.158.273.911.2109.155.954.5-528.1344.650.860.443.143.372.970.650.768.329.629.036.9141.088.352.359.561.229.038.234.2-9.950.958.221.771.982.460.445.612.213.652.7NANANANA
us-gaap:NetIncomeLoss ▄▅▅▂▄▃▃▃▄▄▂▄▄▄██▃▄▃▃▃▄▃▃▃▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▃▂▂▂▂▂361.8517.1472.6236.0398.3288.9300.9277.1386.3429.9236.5456.3456.6397.1841.8810.2309.5348.9318.0308.2322.3368.0253.6300.4257.6422.4278.7248.9314.6301.9241.7253.9230.6186.5223.2187.9181.4209.7172.371.9266.3204.5207.6150.4142.3199.0NANANANA
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▅▂▇▂▇▁▆▄▄█▁▃▃▄▃▃▄▃▇▇▃▃▃▂▄▄▃▃▃█▄▄▄▃▃▃▃▅▂▁█▇▅▃▃▃9.8-0.818.900000000000002-0.117.8-3.914.47.55.822.2-4.83.72.95.41.13.05.34.720.219.24.71.24.70.57.36.71.63.94.622.28.75.26.03.53.53.42.79.2-0.4-5.623.618.610.50.91.94.6NANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▄▅▅▃▄▃▃▃▄▄▃▅▅▄██▃▄▃▃▃▄▃▃▃▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▃▂▂▂▂▂▂▂▂▁363.7515.2472.6236.0398.3288.9300.9277.1386.3429.9236.5456.3456.6397.1841.8810.2309.5348.9318.0308.2322.3368.0253.6300.4241.1414.2270.4240.7306.3293.7233.4245.7222.3178.3218.6179.7173.1201.5164.063.7258.0196.3199.3142.2134.0190.8141.9184.7150.3112.8
us-gaap:NetInvestmentIncome ███▅▆▇▇▇█▆▅▅▅▅▄▃▄▄▄▄▃▂▂▂▂▁▃▂▃▄▃▂▂▂▄▂▃▃▃▃▄▄▄▄▄▄1045.51028.11044.5917.9944.6983.61003.7996.61037.1961.0918.5919.4889.1902.2877.5838.0866.4877.4879.5856.1799.2761.7784.8753.5789.9723.9813.8770.4829.0844.7814.9784.5749.7789.3845.3783.8801.0824.8826.8815.3873.8859.9876.2880.3877.0863.0NANANANA
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▆▄█▆▅▁▅▃▅▆▄▅▂▆▅▆▅▆▄▅▅▇▅▁▄▃▃▂35.4-56.2214.294.316.4-294.312.3-157.828.937.9-94.4-22.9-236.165.827.688.6-1.764.4-59.7-16.014.1129.7-33.3-263.2-42.5-132.6-128.2-195.8NANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆▁▅▅█▁▄▅▆▆▄▄▃▃▄▄▅▅▃▄▅▅▃▄▃▄▃▄▅▄▄▄▃▄▄▅▄▅▄▄▄849.8-1429.5638.8306.42048.1-1646.3-268.6656.31072.31146.7-218.6-208.7-672.3-736.1119.4165.1338.7221.1-768.0110.7339.1539.2-359.6-211.7-349.6-22.2-334.2-225.9239.4176.6196.4-18.0-629.9-20.4-248.7331.161.8225.2-204.3-279.5175.3NANANANANANANANANA
us-gaap:PolicyholderBenefitsAndClaimsIncurredNet ▄▂▅▄▃█▆█▆▅▆▇▄▃▄▇▄▃▅▃▃▃▃▄▅▂▃▁▂▂▂▁▁▁▂▃▁▂▁▁▁▂▂▂▂▂1812.81374.71981.71839.81601.32858.72424.52840.12446.12195.12440.12642.11699.21411.11801.92504.61858.81657.32112.61482.21659.91658.51537.21869.62054.61236.31621.31113.81268.41227.51397.21096.21095.71094.51154.41647.01110.01212.51117.11131.81013.71191.51405.81320.31337.01275.3NANANANA
us-gaap:PremiumsEarnedNet ▄▂▄▃▃█▆█▆▆▇▇▄▂▄▇▄▃▆▂▄▄▃▅▅▂▃▂▂▂▃▁▁▁▁▃▁▁▁▁▁▂▂▂▂▂1269.7835.11409.01184.31153.12291.01934.62274.21932.91724.91976.22172.41265.8995.21390.62126.11452.71248.01738.01002.71276.01282.41154.41557.11682.4916.41208.1875.8835.4803.61019.2703.0737.2694.7700.11158.2681.3679.8669.3672.7751.9797.1943.0865.4868.2878.9NANANANA
us-gaap:ProfitLoss ▄▅▅▃▄▃▃▃▄▄▂▅▅▄██▃▄▃▃▃▄▃▃▃▄▃▃▃▃▃▃▃▂▂▂▂▂▂▁▃▂▂▂▂▂▂▂▂▂371.6516.3491.5235.9416.1285.0315.3284.6392.1452.1231.7460.0459.5402.5842.9813.2314.8353.6338.2327.4327.0369.2258.3300.9264.9429.1280.3252.8319.2324.1250.4259.1236.6190.0230.4191.3184.1218.9171.966.3289.9223.1218.1151.3144.2203.6154.9204.2164.0122.6
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems us-gaap:OperatingSegments▆▅▅▄▃▄▆▄▂▁▂█▂▂▂▂▁▁795.2738.1732.7681.9653.3700.4769.6692.0587.2561.2579.1862.7614.3602.8596.1584.0567.8551.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pfg:CommissionIncome,pfg:SegmentCorporate█▇▅▃▁▃▄▄▃▂▃▃▃▃▂▁▃▁95.792.085.678.072.680.483.782.078.775.879.978.778.579.075.972.578.273.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:FinancialServiceOther,pfg:SegmentCorporate▆▆█▄▄▃▄▄▃▂▂▂▂▁▁▁17.416.320.813.613.611.113.612.511.28.89.48.89.28.08.17.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:FinancialServiceOther,pfg:SegmentPrincipalGlobalInvestors▂▁▂▁▁▂▂▁▁▁▁█▂▁▁▁69.950.259.446.844.761.988.647.542.039.547.3305.858.944.046.250.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:FinancialServiceOther,pfg:SegmentPrincipalInternational▅▅▂▂▂▂▂▂▁▁▅▂▃▂█▇1.81.81.01.00.91.00.80.80.70.61.90.81.31.02.72.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:ManagementService,pfg:SegmentPrincipalGlobalInvestors█▆▅▄▂▃▄▃▂▁▁▃▃▃▃▂374.1355.9343.7330.2303.5321.0326.8315.3304.2292.8298.4317.6312.2316.3315.7309.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:ManagementService,pfg:SegmentPrincipalInternational█▇▅▄▁▃▅▅▅▅▅▆▇▇▃▃124.7120.1116.0110.1100.7108.5115.5114.0115.5114.3113.0117.2121.8120.1108.2106.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,pfg:CommissionIncome,pfg:SegmentRetirementAndIncomeSolutions,pfg:SubsegmentRetirementAndIncomeSolutionsSpread█▁0.20.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,pfg:CommissionIncome,pfg:SegmentUSInsuranceSolutions,pfg:SubsegmentIndividualLifeInsurance█▇▆▆▅▆▇▆▅▅▆▄▂▁▁▁▁▃8.47.87.16.66.07.17.76.76.46.16.65.44.03.63.33.53.64.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,us-gaap:AdministrativeService,pfg:SegmentRetirementAndIncomeSolutions,pfg:SubsegmentRetirementAndIncomeSolutionsFee▆▆▆▅▆▇█▇▁▁▁▁▁▁▁▁145.4141.8149.5132.8150.7156.2176.7155.563.358.259.663.266.361.666.262.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,us-gaap:AdministrativeService,pfg:SegmentUSInsuranceSolutions,pfg:SubsegmentIndividualLifeInsurance█▅▄▃▁▄▆▆▆▅▄▄▄6.65.95.6999999999999985.45.05.76.16.16.25.95.65.65.8NA5.55.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,us-gaap:AdministrativeService,pfg:SegmentUSInsuranceSolutions,pfg:SubsegmentSpecialtyBenefitsInsurance▆▅▃█▁▆▆▆▃▅▅▃▆3.83.73.63.93.53.83.83.83.63.73.73.63.8NA3.63.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,us-gaap:DepositAccount,pfg:SegmentRetirementAndIncomeSolutions,pfg:SubsegmentRetirementAndIncomeSolutionsSpread▄▄▄▃▂▃▁▄▄█▄▇▇▇▇▅2.22.32.22.12.02.11.82.32.32.92.32.82.72.72.72.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,us-gaap:FinancialServiceOther,pfg:SegmentRetirementAndIncomeSolutions,pfg:SubsegmentRetirementAndIncomeSolutionsFee█▁▃▃▂▁▂▂▃▁▂▂▃▁▂▃2.30.10.70.60.50.20.50.50.60.20.50.50.60.10.40.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pfg:SegmentCorporate█▆▄▄▂▁▄▃▄▂▃▃▂▄▄▂▃▁55.948.443.742.435.932.941.439.542.537.040.340.237.043.941.737.137.532.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pfg:SegmentPrincipalGlobalInvestors▄▃▃▂▁▂▃▂▁▁▁█▂▂▂▂▁▁444.0406.1403.1377.0348.2382.9415.4362.8346.2332.3345.7623.4371.1360.3361.9359.9344.0340.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pfg:SegmentPrincipalInternational█▇▅▄▁▃▅▅▅▅▅▆▇▇▄▃▂▁126.5121.9117.0111.1101.6109.5116.3114.8116.2114.9114.9118.0123.1121.1110.9109.0105.7100.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pfg:SegmentRetirementAndIncomeSolutions▆▆▆▅▆▇█▇▁▁▁▁▁▁▁▁▁▁150.1144.3152.6135.5153.2158.5179.0158.366.261.362.466.569.664.469.365.768.165.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pfg:SegmentUSInsuranceSolutions█▇▅▅▃▆▇▆▅▅▅▄▂▂▁▁▁▂18.717.416.315.914.416.617.516.616.115.715.814.613.513.112.312.312.513.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,pfg:SegmentRetirementAndIncomeSolutions,pfg:SubsegmentRetirementAndIncomeSolutionsFee▆▆▆▅▆▇█▇▁▁▁▁▂▁▁▁▁▁147.7141.9150.2133.4151.2156.4177.2156.063.958.460.163.766.961.766.663.265.662.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,pfg:SegmentRetirementAndIncomeSolutions,pfg:SubsegmentRetirementAndIncomeSolutionsSpread▅▅▅▃▂▃▁▄▄█▄▇▇▇▇▅▅▅2.42.42.42.12.02.11.82.32.32.92.32.82.72.72.72.52.52.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,pfg:SegmentUSInsuranceSolutions,pfg:SubsegmentIndividualLifeInsurance█▇▆▅▃▆▇▆▅▅▅▃▂▂▁▁▁▂15.013.712.812.011.012.813.812.812.612.012.211.09.89.48.88.99.09.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments,us-gaap:Subsegments us-gaap:OperatingSegments,pfg:SegmentUSInsuranceSolutions,pfg:SubsegmentSpecialtyBenefitsInsurance▇▆▅█▃▇▇▇▅▆▆▅▇▆▅▂▅▁3.83.73.63.93.53.83.83.83.63.73.73.63.83.73.63.43.63.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pfg:CorporateAndRegional,pfg:SegmentPrincipalInternational▇█▂▂▃▂▂▃▂▂▁▂▃▃▁▂0.70.80.20.20.30.20.20.30.20.20.10.20.30.30.10.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,srt:Asia,pfg:SegmentPrincipalInternational█▇▅▆▃▄▄▃▃▃▁▂▂▄▄▃33.532.330.130.527.328.028.627.827.627.024.926.026.728.729.027.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementGeographical,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,srt:LatinAmerica,pfg:SegmentPrincipalInternational▇▆▅▃▁▃▅▅▆▅▆▇█▇▄▃92.789.187.080.774.381.587.887.088.688.189.892.096.592.582.381.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Subsegments pfg:SubsegmentUSInsuranceSolutionsEliminationsNANANA0.0-0.1NANA0.0-0.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:Revenues ▅▄▆▄▄█▆█▆▆▆▇▄▃▄█▄▄▅▃▄▄▃▄▄▃▃▂▂▂▃▁▁▁▂▃▁▁▁▁▂▁▂▂▁▂▁▂▁▁3539.43208.53765.13310.73114.64551.34047.24458.43972.63743.93770.64348.13234.92883.63237.74627.83178.33049.43513.82818.03025.73036.62807.03240.93259.22657.32908.02484.32606.72478.62672.62239.62210.62166.72295.92704.72118.62095.92059.02088.82342.02219.82372.52288.52233.62264.02232.42270.32157.82188.6
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Assets ███▇▇▆▇▇▆▆▅▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▄▂▂▁▁▁▁▁▁▁302165.5295634.6296627.7278484.8271309.4246903.9276087.8270238.4267918.0259419.9243036.1258758.3252104.0253636.5253941.2247933.6240153.9235496.0228014.3230367.6223074.2217570.0218685.9215365.4222270.7222494.9219087.0216422.8218322.3211193.9208191.4201687.4196512.7200762.9161926.5159193.3152050.7153738.2148298.0143302.3149278.4147549.7145631.1NANANA137759.4NANANA
us-gaap:Liabilities ███▇▇▆▇▇▇▆▆▆▆▆▆▆▅▅▅▅▅▄▄▄▅▅▄▄▄▄▄▄▃▄▂▂▁▂▁▁▁▁▁285543.4279908.8279754.8262485.2255725.7233691.6261137.1254996.3253511.5246120.0231188.9246841.1240258.6241252.9240918.0235737.2228820.8224716.0217623.0219313.9212169.4207199.5209222.8205601.6212436.5211937.8208797.0205997.7207580.6200855.8198167.2192079.5187050.2190877.4152092.9149286.4142555.3143986.3138285.0133012.9138610.8137176.9135746.1NANANA129743.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ███▇▇▆▇▇▆▆▅▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▄▄▄▄▄▃▄▂▂▁▁▁▁▁▁▁302165.5295634.6296627.7278484.8271309.4246903.9276087.8270238.4267918.0259419.9243036.1258758.3252104.0253636.5253941.2247933.6240153.9235496.0228014.3230367.6223074.2217570.0218685.9215365.4222270.7222494.9219087.0216422.8218322.3211193.9208191.4201687.4196512.7200762.9161926.5159193.3152050.7153738.2148298.0143302.3149278.4147549.7145631.1NANANA137759.4NANANA
us-gaap:StockholdersEquity █▇█▇▇▄▆▆▆▄▃▃▃▄▄▄▃▂▂▂▂▂▁▁▁▂▂▂▂▂▁▁▁▁▁▂▁▁▁▂▂▂▁16233.115405.516558.915650.915243.112907.514618.014804.214034.712694.411390.011700.811639.312186.912849.311996.411168.110616.110227.310794.610499.710041.69311.69620.39693.410422.610184.010316.410401.89987.99684.29278.49303.49723.69753.29827.59422.79364.99637.09980.310402.210187.69727.8NANANA7893.5NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue ▄▃▅▇▆▆▄▆▆▄▅▅▄▄▄▅▃▂▅▄▄▃▄▄▄▂▃▁▂▂▄▂▁▂█▄▂▂▅▂▃▃▃▄▃▂▄2417.42003.52849.83556.73150.43482.72515.93198.03315.92259.72977.52926.72342.02335.72470.82795.02006.41534.72719.62218.22255.42142.92564.82514.22264.41452.01863.91270.81742.31393.12371.81707.11110.51661.24177.22279.01646.61651.92833.91434.22169.61984.21877.42268.81827.31629.72240.4NANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▃▁▅█▆█▃▆▇▂▅▅▃2417.42003.52849.83556.73150.43482.72515.93198.03315.92259.72977.52926.72342.0NA2470.8NANANA2719.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:Goodwill ████████▅▅▅▅▅▅▅▅▅▅▄▅▅▅▄▄▄▄▄▅▅▅▅▅▅▅▂▂▂▂▂▁▁▁▁1699.81701.21711.01653.31630.91616.41693.81690.71111.51110.61100.01128.71103.21096.71068.81055.21033.31032.91020.81034.71037.21037.61009.01005.2970.7981.01007.41034.41085.31075.21100.31127.51138.51197.4543.4548.9542.0490.7482.3413.9345.6344.5345.4NANANA386.4NANANA
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill NANA790.4NANANA783.6NANANA793.3NANANA809.5NANANA797.8NANANA790.6NANANA833.0NANANA856.3NANANA695.3NANANA667.2NANANA668.8NANANA668.6NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▇▇▇▇▇▇██▄▄▅▅▅▅▅▅▄▅▅▅▅▅▅▅▄▄▅▅▅▅▆▆▆▆▂▂▂▁▁▁▁▁▁1677.31698.11723.01705.51709.31716.61786.71801.71300.71310.31315.11353.91355.41392.41314.71314.71311.31322.61325.31346.41358.51370.91359.21398.91268.81291.21323.51361.41418.51421.81459.01497.41517.31590.3927.2927.4934.9893.9890.6872.8827.4829.3834.6NANANA851.7NANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA932.6NANANA1003.11014.3NANA521.8NANANA505.2NANANA527.5NANANA568.6NANANA490.5NANANA602.7NANANA231.9NANANA223.4NANANA165.8NANANA183.1NANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA234.9NANANA190.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EquitySecuritiesFvNi ██▄▃▂▁▃▃▃▃▂▃2506.52526.32013.41862.71778.51664.11879.41907.31895.21864.11843.71885.8NANA1866.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:LongTermDebt █████▆▇▇▇▅▅▅▅▅▅▅▅▅▅▅▅▅▅▅▆▃▃▃▃▃▄▄▄▄▄▃▁▁▁▁▁▁▁4279.54279.44279.24279.04163.43670.13734.13763.93762.43266.43259.63245.53219.93196.63178.43175.43126.83126.23125.73278.23270.23269.13290.83286.13315.92514.62531.22529.22529.42516.02601.42593.32578.62790.52671.32180.01576.91570.81564.81570.41582.11579.81583.7NANANA1584.6NANANA
us-gaap:DeferredIncomeTaxLiabilitiesNet █▇█▇▇▄▆▆▅▄▂▂▂▂▃▅▄▃▂▃▃▂▁▂▂2324.62065.92330.82106.92061.51450.31796.61928.11687.51318.7958.4911.4887.9909.01092.51515.21281.81048.1972.41229.91234.71044.5697.2878.8819.7NA1035.3NANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:MinorityInterest ▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▁▁▁██▇▆▄▄58.456.858.470.267.965.167.868.667.367.866.067.967.268.972.670.969.968.866.569.268.068.065.865.569.269.548.052.657.570.092.895.0105.5103.020.018.412.2387.0376.0309.1265.4185.2157.2NANANA122.9NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:StockholdersEquity █▇█▇▇▄▆▆▆▄▃▃▃▄▄▄▃▂▂▂▂▂▁▁▁▂▂▂▂▂▁▁▁▁▁▂▁▁▁▂▂▂▁16233.115405.516558.915650.915243.112907.514618.014804.214034.712694.411390.011700.811639.312186.912849.311996.411168.110616.110227.310794.610499.710041.69311.69620.39693.410422.610184.010316.410401.89987.99684.29278.49303.49723.69753.29827.59422.79364.99637.09980.310402.210187.69727.8NANANA7893.5NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest █▇█▇▇▅▆▇▆▅▄▄▄▄▅▄▄▃▃▃▃▃▂▂▂▃▃▃▃▃▂▂▂▂▂▂▂▂▃▃▃▃▃▃▂▂▁16291.515462.316617.315721.115311.012972.614685.814872.814102.012762.211456.011768.711706.512255.812921.912067.311238.010684.910293.810863.810567.710109.69377.49685.89762.610492.110232.010369.010459.310057.99777.09373.49408.99826.69773.29845.99434.99751.910013.010289.410667.610372.89885.010034.39071.78688.28016.4NANANA
us-gaap:CommonStockValue █████████████▆▆▆▆▆▆▆▆▆▆▆▃▃▃▃▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁4.84.84.84.84.84.84.84.84.84.84.84.84.84.74.74.74.74.74.74.74.74.74.74.74.64.64.64.64.64.64.64.64.64.64.54.54.54.54.54.54.54.54.5NANANA4.5NANANA
us-gaap:AdditionalPaidInCapital ██▇▇▇▇▆▆▆▆▅▅▅▅▄▄▄▃▃▂▂▂▂▁▁▅▅▄▄▄▃▃▄▃▃▃▃▂▂▂▂▂▂10399.710351.810321.610291.210259.610216.510182.610162.610130.710090.810060.710026.29993.69981.89925.29886.89845.19780.59686.09646.59615.79598.19544.89524.29473.89975.69945.59916.99839.29813.19798.99749.39819.89771.59730.99712.29685.49669.69634.79617.99593.79580.19563.8NANANA9492.9NANANA
us-gaap:RetainedEarningsAccumulatedDeficit ███▇▇▇▇▇▇▆▆▆▆▆▅▅▄▄▄▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▂▁▁▁12395.012199.211838.011521.411441.411198.811074.310927.810805.810571.910290.210207.99904.39598.39482.98784.68112.27937.47720.47528.17339.67131.86875.96734.76547.96420.46114.15945.25816.35605.35405.45249.95125.24971.74940.24784.34667.14548.55077.55130.35066.64808.64612.3NANANA4160.7NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▇▅█▇▆▃▆▆▅▃▁▁▂▃▄▄▄▃▃▄▄▃▂▃▃▄▄▄▅▄▄▄▄▅▅▅▅▅▄▅▅▅▄1803.8953.82383.11747.11450.7-599.21037.91307.1647.7-418.9-1565.1-1347.6-1137.9-469.3165.547.0-116.1-455.1-675.291.8-19.3-356.1-882.5-524.4-326.628.050.4380.1599.4361.8183.2-17.7-0.5621.0631.9880.8550.5488.1201.9409.2698.8525.5272.4NANANA-1042.0NANANA
us-gaap:TreasuryStockValue █▇▇▇▇▇▇▇▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▃▃▃▃▃▃▃▃▂▂▂▂▁▁▁8370.28104.17988.67913.67913.47913.47681.67598.17554.37554.27400.67190.57125.56928.66729.06726.76677.86651.46508.66476.56441.06336.96231.36118.96006.36006.15930.75930.55857.85797.05708.05707.85645.85645.35554.45554.45484.95345.95281.75181.74961.54731.24725.3NANANA4722.7NANANA
us-gaap:MinorityInterest ▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▂▃▃▃▃▁▁▁██▇▆▄▄58.456.858.470.267.965.167.868.667.367.866.067.967.268.972.670.969.968.866.569.268.068.065.865.569.269.548.052.657.570.092.895.0105.5103.020.018.412.2387.0376.0309.1265.4185.2157.2NANANA122.9NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues ▃▃▂▂▂▂▂▂▃▂▂▂▂▄▃▄▅█▂▂▁▂▁▅▂▃▂▅▂▃▅▅▃▃▁▂▁▂▁▂▁▂▁▂▁▂25.617.38.211.514.19.06.88.816.35.811.67.812.132.519.429.842.570.812.114.51.210.04.641.911.717.97.943.510.016.145.642.417.520.34.213.02.69.12.712.41.79.10.610.90.88.3NANANANA
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders ▁▁▅▁▁▆▃▂▂▁▂▁▁▃▁▂▂▁█▁▁▁▁▁▄▁▁▁▁▆1.81.616.01.11.122.111.25.03.41.33.01.01.58.02.32.62.51.031.11.01.90.81.72.111.30.31.00.60.322.0NANA2.83.62.62.42.53.22.42.62.42.42.21.82.81.0NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▁▃▄▂▆▄▇▆▅▆█▄▃▃▇▅▂992.8140.8628.21064.3457.01589.11028.41786.41502.01176.41442.62075.7891.7746.5559.31799.61306.2522.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInInvestingActivities █▅▄▄▅▆▁▁▆▄▅▃▄▅▆▆▆▃76.4-1019.2-1385.9-1418.8-1308.4-912.7-2762.3-2582.2-852.9-1491.1-1293.8-2067.2-1361.6-979.9-735.1-813.4-673.3-1831.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▄▄▇▆▅█▆▅▂▃▆▆▄▃▃▃▄-655.332.150.8760.8519.1290.41051.8677.9407.1-403.1-98.0576.2476.298.3-148.4-197.6-161.2123.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNANA817.1109.8213.0894.41095.485.31173.4304.7413.5643.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNANA-264.8698.568.6213.1636.7637.7-1109.6-194.1210.4497.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNANA-281.1-7.1-116.2-440.7-451.2142.9-16.1-215.7-371.3-356.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNANA-220.4-40.4353.7-376.4-229.1-188.0359.4-298.0-350.6-207.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNA824.3NANANA894.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNA-119.3NANANA213.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNA-422.5NANANA-440.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNA-250.4NANANA-376.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▆▁▂▆▃█▂▄█▁▄▆413.9-846.3-706.9406.3-332.3966.8-682.1-117.91056.2-717.850.8584.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄▁▃▄▂▆▄▇▆▅▆█▄▃▃▇▅▂992.8140.8628.21064.3457.01589.11028.41786.41502.01176.41442.62075.7891.7746.5559.31799.61306.2522.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▄▅▅▂▄▃▃▃▄▄▂▄▄▄██▃▄▃▃▃▄▃▃▃▄▃▃▃▃▃▃▂▂▂▂▂▂▂▁▃▂▂▂▂▂361.8517.1472.6236.0398.3288.9300.9277.1386.3429.9236.5456.3456.6397.1841.8810.2309.5348.9318.0308.2322.3368.0253.6300.4257.6422.4278.7248.9314.6301.9241.7253.9230.6186.5223.2187.9181.4209.7172.371.9266.3204.5207.6150.4142.3199.0NANANANA
us-gaap:ProfitLoss ▄▅▅▃▄▃▃▃▄▄▂▅▅▄██▃▄▃▃▃▄▃▃▃▄▃▃▃▃▃▃▃▂▂▂▂▂▂▁▃▂▂▂▂▂▂▂▂▂371.6516.3491.5235.9416.1285.0315.3284.6392.1452.1231.7460.0459.5402.5842.9813.2314.8353.6338.2327.4327.0369.2258.3300.9264.9429.1280.3252.8319.2324.1250.4259.1236.6190.0230.4191.3184.1218.9171.966.3289.9223.1218.1151.3144.2203.6154.9204.2164.0122.6
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities █▅▄▄▅▆▁▁▆▄▅▃▄▅▆▆▆▃76.4-1019.2-1385.9-1418.8-1308.4-912.7-2762.3-2582.2-852.9-1491.1-1293.8-2067.2-1361.6-979.9-735.1-813.4-673.3-1831.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▁▄▄▇▆▅█▆▅▂▃▆▆▄▃▃▃▄-655.332.150.8760.8519.1290.41051.8677.9407.1-403.1-98.0576.2476.298.3-148.4-197.6-161.2123.2NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNANA817.1109.8213.0894.41095.485.31173.4304.7413.5643.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNANA-264.8698.568.6213.1636.7637.7-1109.6-194.1210.4497.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNANA-281.1-7.1-116.2-440.7-451.2142.9-16.1-215.7-371.3-356.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNANA-220.4-40.4353.7-376.4-229.1-188.0359.4-298.0-350.6-207.9NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNA824.3NANANA894.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNA-119.3NANANA213.1NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNA-422.5NANANA-440.7NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetCashProvidedByUsedInFinancingActivities us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNA-250.4NANANA-376.4NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProceedsFromIssuanceOfLongTermDebt NANA0.1115.7NANA0.91.3496.06.714.025.523.318.0NANANANA645.17.30.53.24.53.0794.33.12.09.113.414.014.115.05.63.5890.5593.88.11.0NA0.61.40.60.60.60.90.2NANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNANA-2.0-2.1-2.1-2.3-2.5-2.4-2.5-2.6-2.6-2.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate,srt:ReportableLegalEntitiesNANA0.0NANANA0.91.32.46.714.025.5NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNANA2.02.12.12.32.52.42.52.62.62.8NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor,us-gaap:ConsolidationItems srt:ParentCompany,srt:ReportableLegalEntitiesNANA0.1102.0NANA0.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor,srt:ConsolidationEliminationsNA-0.8NANANA-2.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:ProceedsFromIssuanceOfLongTermDebt us-gaap:ConsolidatedEntities,us-gaap:ConsolidationItems pfg:SubsidiaryPrincipalFinancialServicesConsolidate,srt:ReportableLegalEntitiesNA0.8NANANA2.3NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:RepaymentsOfLongTermDebt ▁▁▁▁▁█▄▁▁▁▁▁▁▁▁0.50.40.50.40.464.531.20.30.40.30.30.30.40.30.3NANANANANANANA0.032.80.019.80.00.20.0100.16.00.3211.50.4448.50.60.70.87.91.21.41.72.22.53.03.4NANANANA
us-gaap:PaymentsOfDividendsCommonStock █▇▇▇▇▇▇▇▇▇▇▇▇▇▇▆▆▆▅▅▅▅▅▅▅▄▄▄▄▃▂▂▂▂▂▁▁▁165.2152.2153.7153.7153.5153.6152.4153.0150.4150.2152.1150.7148.5147.3141.5135.8132.7130.0123.8117.9112.8110.4110.8111.9112.0106.399.999.994.182.776.776.567.667.661.761.653.754.3NANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock █▄▃▁▁▇▃▂▁▅▇▃▆▆▁▂▂▅▂▂▄▄▄▄▁▃▁▃▃▃▁▃▁▃▁▃▅▃▄▇▇▁▁▁▁▁266.1115.575.00.20.0231.883.543.80.1153.6210.165.0196.9199.62.348.926.4142.832.135.5104.1105.6112.4112.60.275.40.272.760.889.00.262.00.590.90.069.5139.064.2100.0220.2230.35.90.30.30.31.7NANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4.84.84.84.84.84.84.84.84.84.84.84.84.84.74.74.74.74.74.74.74.74.74.74.74.64.64.64.64.64.64.64.64.64.64.54.54.54.54.54.54.54.54.54.5
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Common
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-5.5-5.5-11.0-11.0-11.0-11.0-11.0-11.0
Percentage of CommonStockValue-114.6-114.6-229.2-229.2-229.2-229.2-229.2-229.2
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.00.00.00.00.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Common
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value5.55.5111111111111
Percentage of CommonStockValue114.6114.6229.2229.2229.2229.2229.2229.2
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

Shares Outstanding

us-gaap:SharesOutstanding us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

us-gaap:CommonStock


Shares
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value269272273274274273276278278278279283284287289288288288287287288290291293294294293293293294295293293293293293295300301305313321320320319319259
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued

us-gaap:CommonStockSharesIssued


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value484483481481481480479479478478476476476476474473472471469468468468466466465464462462461460459458456455453453452452450450449449448447
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesIssued us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:ParentCompany, srt:ReportableLegalEntities


Common
Period End2020-12-312019-12-312018-12-31
Value481479476
Percentage of CommonStockSharesIssued100.0100.0100.0

Common Stock Shares Outstanding

us-gaap:CommonStockSharesOutstanding

us-gaap:CommonStockSharesOutstanding


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value269272273274274273276278278278279283284287289288288288287287288290291293294294293293293294295293293293293293295300301305313321320319
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockSharesOutstanding us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

srt:ParentCompany, srt:ReportableLegalEntities


Common
Period End2020-12-312019-12-312018-12-31
Value273276279
Percentage of CommonStockSharesOutstanding100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value275276276275277281281280287289292293292292291292294298298298298298299298297297297301304314323324323322322
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value271272274274275279279278284286289289288288288289291295295294294294295294294294294299301311320321320320319
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value1.341.891.720.861.451.051.080.991.381.540.841.61.591.372.912.81.071.211.11.071.111.260.871.020.821.410.920.781.040.960.790.830.760.610.740.610.580.670.540.20.810.610.620.440.420.60.440.580.520.43
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value1.321.871.70.851.451.041.070.981.371.530.831.591.581.362.872.761.061.191.091.061.11.250.861.010.811.390.910.771.030.950.780.820.750.610.740.60.580.660.540.20.80.60.620.440.420.590.440.570.520.43
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Benefits Losses And Expenses

us-gaap:BenefitsLossesAndExpenses

us-gaap:BenefitsLossesAndExpenses


Benefits
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value31062594317330352616422336754112352232173527377927192426292234702812263531322447262525962498287129642199259020902199210223621919194519382030252318831818186519501969193621082125207520072062202219592058
Percentage of BenefitsLossesAndExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues87.880.984.391.784.092.890.892.288.786.093.686.984.184.290.375.088.586.489.186.886.885.589.088.691.082.889.184.184.484.888.485.788.089.588.493.388.986.890.693.484.187.288.992.992.988.792.489.190.894.1

us-gaap:BenefitsLossesAndExpenses pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Benefits
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-3.9-3.4-2.3-2.2-2.7-2.5-2.4-2.7-2.9-5.0
Percentage of BenefitsLossesAndExpenses-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Revenues-0.1-0.1-0.1-0.0-0.1-0.1-0.1-0.1-0.1-0.1
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.02200.00.00.00.0225.00.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Benefits
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2980284624414043346539193433314134763729
Percentage of BenefitsLossesAndExpenses93.993.893.395.794.395.397.597.698.598.7
Percentage of Revenues79.286.078.488.885.687.986.483.992.285.8
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.091.00.00.00.084.20.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Benefits
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value14514212713316214537226.06.4
Percentage of BenefitsLossesAndExpenses4.64.74.93.24.43.51.10.70.20.2
Percentage of Revenues3.94.34.12.94.03.30.90.60.20.1
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.0133.50.00.00.0518.20.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Benefits
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value51504948505054564848
Percentage of BenefitsLossesAndExpenses1.61.61.91.11.41.21.51.71.41.3
Percentage of Revenues1.41.51.61.11.31.11.41.51.31.1
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.0564.00.00.00.0544.70.00.0

us-gaap:BenefitsLossesAndExpenses us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Benefits
Period End2021-03-312020-03-31
Value-3.1-2.4
Percentage of BenefitsLossesAndExpenses-0.1-0.1
Percentage of Revenues-0.1-0.1
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations100.0100.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Benefits
Period End2021-03-312020-03-31
Value24134043
Percentage of BenefitsLossesAndExpenses93.095.7
Percentage of Revenues75.288.8
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities76.991.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Benefits
Period End2021-03-312020-03-31
Value144133
Percentage of BenefitsLossesAndExpenses5.63.2
Percentage of Revenues4.52.9
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities173.9133.5

srt:ParentCompany, srt:ReportableLegalEntities


Benefits
Period End2021-03-312020-03-31
Value3948
Percentage of BenefitsLossesAndExpenses1.51.1
Percentage of Revenues1.21.1
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities-448.9564.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value1211-912.211085322448-1348.2319361452157619248-212.0-339.9960973648569-449.0419659903-104.5103-93.6406-51.029552480442236-390.9167-22.0518243439-47.3-199.1400449
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues34.2-28.429.416.178.6-29.60.821.036.642.10.55.7-6.6-11.829.721.020.418.7-12.814.921.829.8-3.73.2-2.915.3-1.81.221.219.416.610.6-17.77.7-1.019.211.521.0-2.3-9.517.120.2

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value9.6-1.0219.916-13.1154.41122-5.93.1-0.86.32.05.05.05.719187.04.73.2-13.88.90.4-2.9-2.76.4204.24.4-2.42.43.74.22.110.0-0.6-5.92318
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.3-0.00.60.30.5-0.30.40.10.30.6-0.20.1-0.00.20.10.10.20.20.50.70.20.20.1-0.40.30.0-0.1-0.10.20.80.20.2-0.10.10.20.20.10.5-0.0-0.31.00.8

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1221-913.211305422464-1361.3469401464159813251-212.8-333.6962978653574-429.8438666908-101.389-84.7406-53.926558500446241-393.3169-18.3522245449-35.7-223.646347613953370657
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues34.5-28.530.016.479.1-29.91.221.136.942.70.35.8-6.6-11.629.721.120.618.8-12.215.522.029.9-3.62.8-2.615.3-1.91.121.420.216.710.8-17.87.8-0.819.311.621.5-1.7-10.719.821.50.641.716.629.0

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Comprehensive
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-2359.6-1068.5-4663.42482-279.3-1891.5-2870.8-3195.6-148.8-545.9
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest-208.8-197.0-189.2-182.3-598.1-201.0-196.0-199.9-1135.9-217.2
Percentage of Revenues-62.7-32.3-149.754.5-6.9-42.4-72.3-85.4-3.9-12.6
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.0-2482100.00.00.00.0266300.00.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Comprehensive
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value12785842519-1347.71749921471163376282
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest113.1107.8102.299.0373.4105.5100.5102.2582.4112.3
Percentage of Revenues34.017.780.9-29.64.322.337.043.62.06.5
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.0-30.30.00.00.043.80.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Comprehensive
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11525222314-1241.21139301418158968266
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest101.996.393.991.2242.498.996.899.4520.6105.8
Percentage of Revenues30.615.874.3-27.32.820.935.742.51.86.1
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.0-1240.00.00.00.036131.80.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Comprehensive
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value10595032293-1254.5389091446157117249
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest93.792.993.192.282.296.798.898.3132.899.1
Percentage of Revenues28.115.273.6-27.60.920.436.442.00.55.7
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.0-14587.20.00.00.015254.40.00.0

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Comprehensive
Period End2021-03-312020-03-31
Value13682477
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest-149.8-182.0
Percentage of Revenues42.654.4
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations-44132.3-103245.8

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Comprehensive
Period End2021-03-312020-03-31
Value-830.2-1345.6
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest90.998.8
Percentage of Revenues-25.9-29.6
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities-26.5-30.3

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Comprehensive
Period End2021-03-312020-03-31
Value-704.3-1239.1
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest77.191.0
Percentage of Revenues-22.0-27.2
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities-846.5-1237.9

srt:ParentCompany, srt:ReportableLegalEntities


Comprehensive
Period End2021-03-312020-03-31
Value-746.8-1254.5
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest81.892.2
Percentage of Revenues-23.3-27.6
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities8486.4-14587.2

Gain Loss On Investments

us-gaap:GainLossOnInvestments

us-gaap:GainLossOnInvestments


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-41.115113365-27.4131-90.9-42.4-4.084-112.2-5.567-25.1-39.9676-95.9-16.6-43.44433136-41.138-114.666-26.3-46.4860.6-43.3-50.9-80.1-50.932870.2-6.7-71.3-30.737-58.0-58.9-20.7-66.4-45.5
Percentage of GainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues-1.24.73.52.0-0.92.9-2.2-1.0-0.12.3-3.0-0.12.1-0.9-1.214.6-3.0-0.5-1.21.61.14.5-1.51.2-3.52.5-0.9-1.93.30.0-1.6-2.3-3.6-2.31.43.20.0-0.3-3.5-1.51.6-2.6-2.5-0.9-3.0-2.0

us-gaap:GainLossOnInvestments pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Gain
Period End2020-12-31
Value-0.2
Percentage of GainLossOnInvestments-0.2
Percentage of Revenues-0.0
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Gain
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value139-92.9-54.9-7.272-110.5-4.5
Percentage of GainLossOnInvestments104.9102.2129.5180.085.998.581.8
Percentage of Revenues3.7-2.3-1.2-0.21.9-2.9-0.1
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.00.01.90.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Gain
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-8.3000000000000041.510-0.76.6-4.81.8
Percentage of GainLossOnInvestments-6.2-1.7-23.817.57.84.3-32.7
Percentage of Revenues-0.20.00.2-0.00.2-0.10.0
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.00.0150.00.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Gain
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.00.72.43.95.33.1-2.7
Percentage of GainLossOnInvestments1.5-0.8-5.7-97.56.3-2.849.1
Percentage of Revenues0.10.00.10.10.10.1-0.1
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.00.051.50.00.0

us-gaap:GainLossOnInvestments us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Gain
Period End2021-03-312020-03-31
Value152120
Percentage of GainLossOnInvestments100.892.0
Percentage of Revenues4.82.7
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities4.92.7

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Gain
Period End2021-03-312020-03-31
Value135.3
Percentage of GainLossOnInvestments8.74.0
Percentage of Revenues0.40.1
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities15.75.3

srt:ParentCompany, srt:ReportableLegalEntities


Gain
Period End2021-03-312020-03-31
Value-14.35.2
Percentage of GainLossOnInvestments-9.44.0
Percentage of Revenues-0.40.1
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities162.560.5

us-gaap:GainLossOnInvestments us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:ForeignExchangeContract, us-gaap:CashFlowHedging, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Gain
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302018-03-31
Value0.7-0.10.24.02.20.00.09.5102.30.6-0.4
Percentage of GainLossOnInvestments-1.7-0.10.3-14.61.7-0.0-0.0-237.5-9.1-41.80.91.6
Percentage of Revenues0.0-0.00.00.10.00.00.00.20.30.10.0-0.0
Percentage of Revenues us-gaap:ForeignExchangeContract us-gaap:CashFlowHedging us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ForeignExchangeContract, us-gaap:NetInvestmentHedging, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Gain
Period End2020-12-312020-09-30
Value0.0-7.1
Percentage of GainLossOnInvestments0.0-10.8
Percentage of Revenues0.0-0.2
Percentage of Revenues us-gaap:ForeignExchangeContract us-gaap:NetInvestmentHedging us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.0

us-gaap:InterestRateContract, us-gaap:CashFlowHedging, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Gain
Period End2020-12-312020-09-302020-06-302020-03-31
Value0.00.13.9-1.3
Percentage of GainLossOnInvestments0.00.2-14.2-1.0
Percentage of Revenues0.00.00.1-0.0
Percentage of Revenues us-gaap:InterestRateContract us-gaap:CashFlowHedging us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.0

us-gaap:GainLossOnInvestments us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:NetInvestmentHedging, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Gain
Period End2020-12-312020-09-30
Value0.0-7.1
Percentage of GainLossOnInvestments0.0-10.8
Percentage of Revenues0.0-0.2
Percentage of Revenues us-gaap:NetInvestmentHedging us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.0

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
Value619710039824356615873111095554-528.1344506043437270506829293614188525961293834-9.950582171826045121352
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 Revenues1.73.02.71.22.60.91.41.41.52.00.32.51.71.9-16.37.41.62.01.21.52.42.31.82.10.91.11.35.73.42.12.22.71.31.81.5-0.42.42.81.13.43.52.71.90.50.62.3

us-gaap:IncomeTaxExpenseBenefit pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1266497686375828427111
Percentage of IncomeTaxExpenseBenefit126.5165.1117.7158.6113.6123.4141.2113.7242.0102.3
Percentage of Revenues3.42.03.11.51.61.72.12.20.72.6
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.01.50.00.00.02.30.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-15.2-12.3-3.1-15.23.4-3.4-13.01.2-6.09.1
Percentage of IncomeTaxExpenseBenefit-15.2-31.4-3.8-35.26.1-5.6-22.31.6-53.68.3
Percentage of Revenues-0.4-0.4-0.1-0.30.1-0.1-0.30.0-0.20.2
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.0-15.20.00.00.027.30.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-11.3-13.2-11.5-10.1-11.0-10.9-11.0-11.3-9.9-11.6
Percentage of IncomeTaxExpenseBenefit-11.3-33.7-13.9-23.4-19.6-17.8-18.9-15.3-88.4-10.6
Percentage of Revenues-0.3-0.4-0.4-0.2-0.3-0.2-0.3-0.3-0.3-0.3
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.0-117.40.00.00.0-109.70.00.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Income
Period End2021-03-312020-03-31
Value12568
Percentage of IncomeTaxExpenseBenefit128.1158.6
Percentage of Revenues3.91.5
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities4.01.5

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Income
Period End2021-03-312020-03-31
Value-15.1-15.2
Percentage of IncomeTaxExpenseBenefit-15.5-35.2
Percentage of Revenues-0.5-0.3
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities-18.1-15.2

srt:ParentCompany, srt:ReportableLegalEntities


Income
Period End2021-03-312020-03-31
Value-12.3-10.1
Percentage of IncomeTaxExpenseBenefit-12.6-23.4
Percentage of Revenues-0.4-0.2
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities139.8-117.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value36151747223639828830027738642923645645639784181030934831830832236825330025742227824831430124125323018622318718120917271266204207150142199
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.216.112.67.112.86.37.46.29.711.56.310.514.113.826.017.59.711.49.110.910.712.19.09.37.915.99.610.012.112.29.011.310.48.69.76.98.610.08.43.411.49.28.86.66.48.8

us-gaap:NetIncomeLoss pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1071.0-567.6-878.5-651.5-726.9-645.2-862.4-945.4-530.8-986.0
Percentage of NetIncomeLoss-226.6-240.5-220.6-225.5-241.6-232.8-223.2-219.9-224.4-216.1
Percentage of Revenues-28.4-17.1-28.2-14.3-18.0-14.5-21.7-25.3-14.1-22.7
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.0651500.00.00.00.078783.30.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value565301448334395337444482268499
Percentage of NetIncomeLoss119.6127.6112.5115.9131.4121.7115.1112.2113.6109.5
Percentage of Revenues15.09.114.47.49.87.611.212.97.111.5
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.07.50.00.00.012.90.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value505266430316331307417462262486
Percentage of NetIncomeLoss107.0112.9108.1109.6110.2111.1108.2107.7110.9106.6
Percentage of Revenues13.48.013.87.08.26.910.512.47.011.2
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.0316.30.00.00.010520.50.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value472236398288300277386429236456
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues12.67.112.86.37.46.29.711.56.310.5
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.03359.30.00.00.04173.80.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Net
Period End2021-03-312020-03-31
Value-1152.6-655.7
Percentage of NetIncomeLoss-222.9-227.0
Percentage of Revenues-35.9-14.4
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations37180.627320.8

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Net
Period End2021-03-312020-03-31
Value599337
Percentage of NetIncomeLoss115.9116.6
Percentage of Revenues18.77.4
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities19.17.6

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Net
Period End2021-03-312020-03-31
Value553318
Percentage of NetIncomeLoss107.0110.3
Percentage of Revenues17.27.0
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities664.8318.4

srt:ParentCompany, srt:ReportableLegalEntities


Net
Period End2021-03-312020-03-31
Value517288
Percentage of NetIncomeLoss100.0100.0
Percentage of Revenues16.16.3
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities-5876.13359.3

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


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
Value9.8-0.818-0.117-3.9147.55.822-4.83.72.95.41.13.05.34.720194.71.24.70.57.36.71.63.94.6228.75.26.03.53.53.42.79.2-0.4-5.62318100.91.94.6
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.3-0.00.5-0.00.6-0.10.40.20.10.6-0.10.10.10.20.00.10.20.20.60.70.20.00.20.00.20.30.10.20.20.90.30.20.30.20.20.10.10.4-0.0-0.31.00.80.40.00.10.2

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value18-0.117-3.9147.55.822-4.83.7
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues0.5-0.00.6-0.10.40.20.10.6-0.10.1
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.0-0.10.00.00.00.60.00.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Net
Period End2021-03-312020-03-31
Value-0.8-3.9
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0
Percentage of Revenues-0.0-0.1
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities-0.0-0.1

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value36351547223639828830027738642923645645639784181030934831830832236825330024141427024030629323324522217821817917320116463258196199142134190141184150112
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.316.112.67.112.86.37.46.29.711.56.310.514.113.826.017.59.711.49.110.910.712.19.09.37.415.69.39.711.811.88.711.010.18.29.56.68.29.68.03.011.08.88.46.26.08.46.48.17.05.2

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
Value10451028104491794498310039961037961918919889902877838866877879856799761784753789723813770829844814784749789845783801824826815873859876880877863
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 Revenues29.532.027.727.730.321.624.822.426.125.724.421.127.531.327.118.127.328.825.030.426.425.128.023.224.227.228.031.031.834.130.535.033.936.436.829.037.839.440.239.037.338.736.938.539.338.1

us-gaap:NetInvestmentIncome pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2.13.63.42.53.62.82.21.80.84.9
Percentage of NetInvestmentIncome0.20.40.40.30.40.30.20.20.10.5
Percentage of Revenues0.10.10.10.10.10.10.10.00.00.1
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.0-2500.00.00.00.0-150.00.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value10399119389789959911030956910911
Percentage of NetInvestmentIncome99.599.399.399.599.299.599.499.599.199.1
Percentage of Revenues27.627.530.121.524.622.225.925.524.121.0
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.022.00.00.00.025.60.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0-0.1-0.2-1.1-0.9-1.5-1.8-2.3-1.8-1.9
Percentage of NetInvestmentIncome0.0-0.0-0.0-0.1-0.1-0.2-0.2-0.2-0.2-0.2
Percentage of Revenues0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.0
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.0-1.10.00.00.0-52.30.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3.43.23.33.45.13.45.95.09.05.0
Percentage of NetInvestmentIncome0.30.30.30.30.50.30.60.51.00.5
Percentage of Revenues0.10.10.10.10.10.10.10.10.20.1
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.039.50.00.00.048.50.00.0

us-gaap:NetInvestmentIncome us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Net
Period End2021-03-312020-03-31
Value0.40.1
Percentage of NetInvestmentIncome0.00.0
Percentage of Revenues0.00.0
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations-12.9-4.2

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Net
Period End2021-03-312020-03-31
Value1022979
Percentage of NetInvestmentIncome99.499.6
Percentage of Revenues31.921.5
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities32.622.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Net
Period End2021-03-312020-03-31
Value0.20.8
Percentage of NetInvestmentIncome0.00.1
Percentage of Revenues0.00.0
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.20.8

srt:ParentCompany, srt:ReportableLegalEntities


Net
Period End2021-03-312020-03-31
Value5.53.4
Percentage of NetInvestmentIncome0.50.3
Percentage of Revenues0.20.1
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities-62.539.5

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

us-gaap:OperatingSegments, pfg:SegmentCorporate


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value332923161752281919342122243416231727
Percentage of NetInvestmentIncome3.22.82.21.81.85.32.81.91.93.62.42.52.83.81.82.82.03.1
Percentage of Revenues1.00.90.60.50.51.20.70.40.50.90.60.50.81.20.50.50.50.9
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentCorporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentPrincipalGlobalInvestors


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.61.11.41.00.82.43.32.02.92.41.71.01.21.56.90.81.31.2
Percentage of NetInvestmentIncome0.20.10.10.10.10.20.30.20.30.20.20.10.10.20.80.10.20.1
Percentage of Revenues0.00.00.00.00.00.10.10.00.10.10.00.00.00.10.20.00.00.0
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentPrincipalGlobalInvestors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentPrincipalInternational


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value13615714996144104158172184146134112163162155120156166
Percentage of NetInvestmentIncome13.115.314.310.515.310.615.817.317.815.214.612.218.318.017.814.418.119.0
Percentage of Revenues3.94.94.02.94.62.33.93.94.63.93.62.65.05.64.82.64.95.5
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsFee


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1051071121041021049910110499109116106110106108113119
Percentage of NetInvestmentIncome10.110.410.811.310.810.610.010.210.110.411.912.611.912.212.113.013.113.6
Percentage of Revenues3.03.33.03.13.32.32.52.32.62.72.92.73.33.83.32.33.63.9
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsFee0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsSpread


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value560551549527506536532509531495470467433428424413411402
Percentage of NetInvestmentIncome53.653.752.657.453.654.553.151.151.251.651.250.848.747.548.449.447.545.9
Percentage of Revenues15.817.214.615.916.311.813.211.413.413.212.510.813.414.913.18.913.013.2
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsSpread0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentIndividualLifeInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value201188204179176166183178179169168167162161166161163157
Percentage of NetInvestmentIncome19.318.319.619.618.717.018.317.917.317.618.318.218.317.918.919.318.818.0
Percentage of Revenues5.75.95.45.45.73.74.54.04.54.54.53.95.05.65.13.55.15.2
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions pfg:SubsegmentIndividualLifeInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentSpecialtyBenefitsInsurance


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value424143383641414245373944354035363840
Percentage of NetInvestmentIncome4.14.14.24.23.94.34.14.24.43.94.24.94.04.54.04.34.44.7
Percentage of Revenues1.21.31.21.21.20.91.00.91.21.01.01.01.11.41.10.81.21.3
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions pfg:SubsegmentSpecialtyBenefitsInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetInvestmentIncome us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:InterestRateContract, us-gaap:CashFlowHedging, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.04.14.34.44.74.74.85.04.95.15.15.15.35.4
Percentage of NetInvestmentIncome0.40.40.40.50.50.50.50.50.50.50.60.60.60.6
Percentage of Revenues0.10.10.10.10.20.10.10.10.10.10.10.10.20.2
Percentage of Revenues us-gaap:InterestRateContract us-gaap:CashFlowHedging us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value35-56.22149416-294.312-157.82837-94.4-22.9-236.1652788-1.764-59.7-16.014129-33.3-263.2-42.5-132.6-128.2-195.8
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues1.0-1.85.72.80.5-6.50.3-3.50.71.0-2.5-0.5-7.32.30.91.9-0.12.1-1.7-0.60.54.3-1.2-8.1-1.3-5.0-4.4-7.9

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
Value849-1429.56383062048-1646.3-268.665610721146-218.6-208.7-672.3-736.1119165338221-768.0110339539-359.6-211.7-349.6-22.2-334.2-225.9239176196-18.0-629.9-20.4-248.733161225-204.3-279.5175
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 Revenues24.0-44.617.09.365.8-36.2-6.614.727.030.6-5.8-4.8-20.8-25.53.73.610.77.3-21.93.911.217.8-12.8-6.5-10.7-0.8-11.5-9.19.27.17.3-0.8-28.5-0.9-10.812.22.910.7-9.9-13.47.5

us-gaap:OtherComprehensiveIncomeLossNetOfTax pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1288.6-500.9-3784.93133447-1246.3-2008.4-2250.2382440
Percentage of OtherComprehensiveIncomeLossNetOfTax-201.7-163.5-184.8-190.3-166.6-189.9-187.3-196.2-174.7-210.9
Percentage of Revenues-34.2-15.1-121.568.911.1-28.0-50.6-60.110.110.1
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.0-3133600.00.00.00.0187516.70.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6942832053-1678.7-235.464810201128-187.5-221.3
Percentage of OtherComprehensiveIncomeLossNetOfTax108.792.5100.3102.087.698.895.298.485.8106.0
Percentage of Revenues18.48.665.9-36.9-5.814.525.730.1-5.0-5.1
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.0-37.80.00.00.030.30.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value6462551884-1557.8-218.362210001126-194.0-220.3
Percentage of OtherComprehensiveIncomeLossNetOfTax101.283.592.094.681.394.893.398.388.7105.6
Percentage of Revenues17.27.760.5-34.2-5.414.025.230.1-5.1-5.1
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.0-1556.20.00.00.025611.40.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5862671895-1543.4-262.563210591141-219.1-207.2
Percentage of OtherComprehensiveIncomeLossNetOfTax91.987.492.593.797.796.398.899.5100.299.3
Percentage of Revenues15.68.160.8-33.9-6.514.226.730.5-5.8-4.8
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.0-17946.50.00.00.011080.60.00.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Other
Period End2021-03-312020-03-31
Value25203133
Percentage of OtherComprehensiveIncomeLossNetOfTax-176.3-190.3
Percentage of Revenues78.668.9
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations-81312.9-130566.7

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Other
Period End2021-03-312020-03-31
Value-1428.9-1678.7
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0102.0
Percentage of Revenues-44.5-36.9
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities-45.5-37.8

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Other
Period End2021-03-312020-03-31
Value-1257.4-1557.8
Percentage of OtherComprehensiveIncomeLossNetOfTax88.094.6
Percentage of Revenues-39.2-34.2
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities-1511.3-1556.2

srt:ParentCompany, srt:ReportableLegalEntities


Other
Period End2021-03-312020-03-31
Value-1263.9-1543.4
Percentage of OtherComprehensiveIncomeLossNetOfTax88.493.7
Percentage of Revenues-39.4-33.9
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities14362.5-17946.5

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value9.62.3-56.8101011-1.410.05711-87.18.78.88.7244.24.34.3178.08.08.0-75.0111212-265.93.6
Percentage of OtherComprehensiveIncomeLossNetOfTax1.1-0.2-8.93.40.5-0.70.51.55.31.039.8-4.2-1.3-1.220.52.51.31.9-2.37.22.41.520.9-5.6-3.4-54.179.6-1.6
Percentage of Revenues0.30.1-1.50.30.30.2-0.00.21.40.3-2.30.20.30.30.80.10.10.10.50.30.30.3-2.70.40.40.5-9.10.1
Percentage of Revenues us-gaap:AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value35-56.22149416-294.312-157.82837-94.4-22.9-236.1652788-1.764-59.7-16.014129-33.3-263.2-42.5-132.6-128.2-195.8
Percentage of OtherComprehensiveIncomeLossNetOfTax4.23.933.530.80.817.9-4.6-24.02.73.343.211.035.1-8.923.153.7-0.529.17.8-14.54.224.19.3124.312.2597.338.486.7
Percentage of Revenues1.0-1.85.72.80.5-6.50.3-3.50.71.0-2.5-0.5-7.32.30.91.9-0.12.1-1.7-0.60.54.3-1.2-8.1-1.3-5.0-4.4-7.9
Percentage of Revenues us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value13-2.2-25.1-16.448-20.8121.6-4.5
Percentage of OtherComprehensiveIncomeLossNetOfTax1.60.2-8.2-0.8-3.07.71.90.1-0.4
Percentage of Revenues0.4-0.1-0.8-0.51.1-0.50.30.0-0.1
Percentage of Revenues us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterest0.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterest


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value790-1373.45232262037-1411.6-260.27879841104-58.8-199.2-466.1-805.57070335163-728.8120303404-249.728-306.45728-73.9
Percentage of OtherComprehensiveIncomeLossNetOfTax93.196.182.074.099.585.796.9119.991.896.326.995.469.3109.459.042.598.974.194.9108.789.475.069.4-13.487.6-257.2-8.432.7
Percentage of Revenues22.3-42.813.96.865.4-31.0-6.417.724.829.5-1.6-4.6-14.4-27.92.21.510.55.4-20.74.310.013.3-8.90.9-9.42.11.0-3.0
Percentage of Revenues us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Policyholder Benefits And Claims Incurred Net

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet


Policyholder
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1812137419811839160128582424284024462195244026421699141118012504185816572112148216591658153718692054123616211113126812271397109610951094115416471110121211171131101311911405132013371275
Percentage of PolicyholderBenefitsAndClaimsIncurredNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues51.242.852.655.651.462.859.963.761.658.664.760.852.548.955.754.158.554.360.152.654.954.654.857.763.046.555.844.848.749.552.348.949.650.550.360.952.457.954.354.243.353.759.357.759.956.3

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Policyholder
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1981183916012858242428402446219524402642
Percentage of PolicyholderBenefitsAndClaimsIncurredNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues52.655.651.462.859.963.761.658.664.760.8
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.064.30.00.00.058.80.00.0

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Policyholder
Period End2021-03-312020-03-31
Value13742858
Percentage of PolicyholderBenefitsAndClaimsIncurredNet100.0100.0
Percentage of Revenues42.862.8
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities43.864.3

us-gaap:PolicyholderBenefitsAndClaimsIncurredNet us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome

us-gaap:InterestRateContract, us-gaap:CashFlowHedging, us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome


Policyholder
Period End2021-06-302020-12-312020-09-302019-12-312019-09-30
Value0.10.00.10.00.1
Percentage of PolicyholderBenefitsAndClaimsIncurredNet0.00.00.00.00.0
Percentage of Revenues0.00.00.00.00.0
Percentage of Revenues us-gaap:InterestRateContract us-gaap:CashFlowHedging us-gaap:ReclassificationOutOfAccumulatedOtherComprehensiveIncome0.00.00.00.00.0

Premiums Earned Net

us-gaap:PremiumsEarnedNet

us-gaap:PremiumsEarnedNet


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value12698351409118411532291193422741932172419762172126599513902126145212481738100212761282115415571682916120887583580310197037376947001158681679669672751797943865868878
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 Revenues35.926.037.435.837.050.347.851.048.746.152.450.039.134.543.045.945.740.949.535.642.242.241.148.051.634.541.535.332.032.438.131.433.332.130.542.832.232.432.532.232.135.939.737.838.938.8

us-gaap:PremiumsEarnedNet pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Premiums
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value1409118411532291193422741932172419762172
Percentage of PremiumsEarnedNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues37.435.837.050.347.851.048.746.152.450.0
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.051.60.00.00.046.20.00.0

us-gaap:PremiumsEarnedNet us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Premiums
Period End2021-03-312020-03-31
Value8352291
Percentage of PremiumsEarnedNet100.0100.0
Percentage of Revenues26.050.3
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities26.651.5

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

us-gaap:OperatingSegments, pfg:SegmentPrincipalInternational


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4127261628855011510911762551019767435552
Percentage of PremiumsEarnedNet3.33.31.91.42.53.72.65.15.76.83.12.68.09.84.82.03.84.2
Percentage of Revenues1.20.90.70.50.91.91.22.62.83.11.61.33.13.42.10.91.71.7
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsFee


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.00.51.60.70.91.80.81.00.61.10.51.10.91.51.20.80.71.1
Percentage of PremiumsEarnedNet0.00.10.10.10.10.10.00.00.00.10.00.10.10.20.10.00.00.1
Percentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsFee0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsSpread


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value5251047185174591521123014991171957129214955552887341495814623
Percentage of PremiumsEarnedNet41.312.551.043.739.866.463.665.960.655.565.468.943.929.052.870.356.050.0
Percentage of Revenues14.83.319.115.614.833.430.433.629.525.634.334.417.210.022.732.325.620.4
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsSpread0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentIndividualLifeInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value869773798194667979927080809076819292
Percentage of PremiumsEarnedNet6.811.65.26.77.14.13.43.54.15.43.63.76.49.15.53.86.47.4
Percentage of Revenues2.43.02.02.42.62.11.61.82.02.51.91.92.53.12.31.82.93.0
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions pfg:SubsegmentIndividualLifeInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentSpecialtyBenefitsInsurance


Premiums
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value616605588570582588586579571555550539527517511505490478
Percentage of PremiumsEarnedNet48.672.541.848.250.525.730.325.529.632.227.824.841.751.936.823.833.738.4
Percentage of Revenues17.418.915.617.218.712.914.513.014.414.814.612.416.317.915.810.915.415.7
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions pfg:SubsegmentSpecialtyBenefitsInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value37151649123541628531528439245223146045940284281331435333832732736925830026442928025231932425025923619023019118421817166289223218151144203154204164122
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues10.516.113.17.113.46.37.86.49.912.16.110.614.214.026.017.69.911.69.611.610.812.29.29.38.116.19.610.212.213.19.411.610.78.810.07.18.710.48.33.212.410.19.26.66.59.06.99.07.65.6

us-gaap:ProfitLoss pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-1071.0-567.6-878.5-651.5-726.9-645.2-862.4-945.4-530.8-986.0
Percentage of ProfitLoss-217.9-240.6-211.1-228.6-230.5-226.7-219.9-209.1-229.1-214.3
Percentage of Revenues-28.4-17.1-28.2-14.3-18.0-14.5-21.7-25.3-14.1-22.7
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.0651500.00.00.00.078783.30.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value584301465331409344450504263503
Percentage of ProfitLoss118.8127.6112.0116.1130.0121.2114.8111.6113.9109.4
Percentage of Revenues15.59.115.07.310.17.711.313.57.011.6
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.07.50.00.00.013.50.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value505266430316331307417462262486
Percentage of ProfitLoss102.9112.9103.4111.1105.1108.2106.6102.4113.2105.7
Percentage of Revenues13.48.013.87.08.26.910.512.47.011.2
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.00.00.0316.30.00.00.010520.50.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value472236398288300277386429236456
Percentage of ProfitLoss96.2100.095.7101.495.497.498.595.1102.199.2
Percentage of Revenues12.67.112.86.37.46.29.711.56.310.5
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities0.00.00.03359.30.00.00.04173.80.00.0

us-gaap:ProfitLoss us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Profit
Period End2021-03-312020-03-31
Value-1152.6-655.7
Percentage of ProfitLoss-223.2-230.1
Percentage of Revenues-35.9-14.4
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations37180.627320.8

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Profit
Period End2021-03-312020-03-31
Value598333
Percentage of ProfitLoss116.0116.9
Percentage of Revenues18.77.3
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities19.17.5

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Profit
Period End2021-03-312020-03-31
Value553318
Percentage of ProfitLoss107.1111.8
Percentage of Revenues17.27.0
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities664.8318.4

srt:ParentCompany, srt:ReportableLegalEntities


Profit
Period End2021-03-312020-03-31
Value517288
Percentage of ProfitLoss100.2101.4
Percentage of Revenues16.16.3
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities-5876.13359.3

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:OperatingSegments


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value795738732681653700769692587561579862614602596584567551
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues22.523.019.520.621.015.419.015.514.815.015.419.819.020.918.412.617.918.1
Percentage of Revenues us-gaap:OperatingSegments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pfg:CommissionIncome, pfg:SegmentCorporate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value959285787280838278757978787975727873
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.012.511.711.411.111.510.911.813.413.513.89.112.813.112.712.413.813.3
Percentage of Revenues2.72.92.32.42.31.82.11.82.02.02.11.82.42.72.31.62.52.4
Percentage of Revenues us-gaap:OperatingSegments pfg:CommissionIncome pfg:SegmentCorporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:ProductsAndServicesEliminations, pfg:SegmentCorporate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-57.2-59.9-62.7-49.2-50.3-58.6-55.9-55.0-47.4-47.6-49.0-47.3-50.7-43.1-42.3-42.9-48.8-47.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-7.2-8.1-8.6-7.2-7.7-8.4-7.3-7.9-8.1-8.5-8.5-5.5-8.3-7.1-7.1-7.3-8.6-8.6
Percentage of Revenues-1.6-1.9-1.7-1.5-1.6-1.3-1.4-1.2-1.2-1.3-1.3-1.1-1.6-1.5-1.3-0.9-1.5-1.6
Percentage of Revenues us-gaap:OperatingSegments pfg:ProductsAndServicesEliminations pfg:SegmentCorporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:FinancialServiceOther, pfg:SegmentCorporate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1716201313111312118.89.48.89.28.08.17.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.22.22.82.02.11.61.81.81.91.61.61.01.51.31.41.3
Percentage of Revenues0.50.50.60.40.40.20.30.30.30.20.20.20.30.30.30.2
Percentage of Revenues us-gaap:OperatingSegments us-gaap:FinancialServiceOther pfg:SegmentCorporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:FinancialServiceOther, pfg:SegmentPrincipalGlobalInvestors


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value695059464461884742394730558444650
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.86.88.16.96.88.811.56.97.27.08.235.49.67.37.88.7
Percentage of Revenues2.01.61.61.41.41.42.21.11.11.11.37.01.81.51.41.1
Percentage of Revenues us-gaap:OperatingSegments us-gaap:FinancialServiceOther pfg:SegmentPrincipalGlobalInvestors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:FinancialServiceOther, pfg:SegmentPrincipalInternational


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1.81.81.01.00.91.00.80.80.70.61.90.81.31.02.72.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.20.20.10.10.10.10.10.10.10.10.30.10.20.20.50.4
Percentage of Revenues0.10.10.00.00.00.00.00.00.00.00.10.00.00.00.10.1
Percentage of Revenues us-gaap:OperatingSegments us-gaap:FinancialServiceOther pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:ManagementService, pfg:SegmentPrincipalGlobalInvestors


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value374355343330303321326315304292298317312316315309
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.048.246.948.446.545.842.545.651.852.251.536.850.852.553.052.9
Percentage of Revenues10.611.19.110.09.77.18.17.17.77.87.97.39.711.09.86.7
Percentage of Revenues us-gaap:OperatingSegments us-gaap:ManagementService pfg:SegmentPrincipalGlobalInvestors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:ManagementService, pfg:SegmentPrincipalInternational


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value124120116110100108115114115114113117121120108106
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.716.315.816.115.415.515.016.519.720.419.513.619.819.918.218.2
Percentage of Revenues3.53.73.13.33.22.42.92.62.93.13.02.73.84.23.32.3
Percentage of Revenues us-gaap:OperatingSegments us-gaap:ManagementService pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pfg:CommissionIncome, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsSpread


Revenue
Period End2021-06-302021-03-31
Value0.20.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.0
Percentage of Revenues0.00.0
Percentage of Revenues us-gaap:OperatingSegments pfg:CommissionIncome pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsSpread0.00.0

us-gaap:OperatingSegments, pfg:CommissionIncome, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentIndividualLifeInsurance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value8.47.87.16.66.07.17.76.76.46.16.65.44.03.63.33.53.64.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.11.11.01.00.91.01.01.01.11.11.10.60.70.60.60.60.60.8
Percentage of Revenues0.20.20.20.20.20.20.20.20.20.20.20.10.10.10.10.10.10.1
Percentage of Revenues us-gaap:OperatingSegments pfg:CommissionIncome pfg:SegmentUSInsuranceSolutions pfg:SubsegmentIndividualLifeInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:AdministrativeService, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsFee


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value1451411491321501561761556358596366616662
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.319.220.419.523.122.323.022.510.810.410.37.310.810.211.110.7
Percentage of Revenues4.14.44.04.04.83.44.43.51.61.61.61.52.02.12.01.4
Percentage of Revenues us-gaap:OperatingSegments us-gaap:AdministrativeService pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsFee0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:AdministrativeService, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentIndividualLifeInsurance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value6.65.95.6999999999999985.45.05.76.16.16.25.95.65.65.85.55.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.80.80.80.80.80.80.80.91.11.11.00.60.90.90.9
Percentage of Revenues0.20.20.20.20.20.10.20.10.20.20.10.10.20.20.1
Percentage of Revenues us-gaap:OperatingSegments us-gaap:AdministrativeService pfg:SegmentUSInsuranceSolutions pfg:SubsegmentIndividualLifeInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:AdministrativeService, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentSpecialtyBenefitsInsurance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-30
Value3.83.73.63.93.53.83.83.83.63.73.73.63.83.63.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.50.50.60.50.50.50.50.60.70.60.40.60.60.6
Percentage of Revenues0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Revenues us-gaap:OperatingSegments us-gaap:AdministrativeService pfg:SegmentUSInsuranceSolutions pfg:SubsegmentSpecialtyBenefitsInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:DepositAccount, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsSpread


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.22.32.22.12.02.11.82.32.32.92.32.82.72.72.72.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.30.30.30.20.30.40.50.40.30.40.40.50.4
Percentage of Revenues0.10.10.10.10.10.00.00.10.10.10.10.10.10.10.10.1
Percentage of Revenues us-gaap:OperatingSegments us-gaap:DepositAccount pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsSpread0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, us-gaap:FinancialServiceOther, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsFee


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value2.30.10.70.60.50.20.50.50.60.20.50.50.60.10.40.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.00.10.10.10.00.10.10.10.00.10.10.10.00.10.1
Percentage of Revenues0.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments us-gaap:FinancialServiceOther pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsFee0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pfg:SegmentCorporate


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value554843423532413942374040374341373732
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax7.06.66.06.25.54.75.45.77.26.67.04.76.07.37.06.46.65.8
Percentage of Revenues1.61.51.21.31.20.71.00.91.11.01.10.91.11.51.30.81.21.1
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentCorporate0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentPrincipalGlobalInvestors


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value444406403377348382415362346332345623371360361359344340
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax55.855.055.055.353.354.754.052.459.059.259.772.360.459.860.761.660.661.7
Percentage of Revenues12.512.710.711.411.28.410.38.18.78.99.214.311.512.511.27.810.811.2
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentPrincipalGlobalInvestors0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentPrincipalInternational


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value126121117111101109116114116114114118123121110109105100
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax15.916.516.016.315.615.615.116.619.820.519.813.720.020.118.618.718.618.3
Percentage of Revenues3.63.83.13.43.32.42.92.62.93.13.02.73.84.23.42.43.33.3
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentRetirementAndIncomeSolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value15014415213515315817915866616266696469656865
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.919.620.819.923.522.623.322.911.310.910.87.711.310.711.611.212.011.8
Percentage of Revenues4.24.54.14.14.93.54.43.61.71.61.71.52.22.22.11.42.12.1
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentRetirementAndIncomeSolutions0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value181716151416171616151514131312121213
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.42.42.22.32.22.42.32.42.72.82.71.72.22.22.12.12.22.4
Percentage of Revenues0.50.50.40.50.50.40.40.40.40.40.40.30.40.50.40.30.40.4
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsFee


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value14714115013315115617715663586063666166636562
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax18.619.220.519.623.122.323.022.510.910.410.47.410.910.211.210.811.611.4
Percentage of Revenues4.24.44.04.04.93.44.43.51.61.61.61.52.12.12.11.42.12.1
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsFee0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentRetirementAndIncomeSolutions, pfg:SubsegmentRetirementAndIncomeSolutionsSpread


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.42.42.42.12.02.11.82.32.32.92.32.82.72.72.72.52.52.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.30.30.30.30.30.30.20.30.40.50.40.30.40.40.50.40.40.5
Percentage of Revenues0.10.10.10.10.10.00.00.10.10.10.10.10.10.10.10.10.10.1
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentRetirementAndIncomeSolutions pfg:SubsegmentRetirementAndIncomeSolutionsSpread0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentIndividualLifeInsurance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1513121211121312121212119.89.48.88.99.09.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.91.91.71.81.71.81.81.82.12.12.11.31.61.61.51.51.61.8
Percentage of Revenues0.40.40.30.40.40.30.30.30.30.30.30.30.30.30.30.20.30.3
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions pfg:SubsegmentIndividualLifeInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentSpecialtyBenefitsInsurance


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.83.73.63.93.53.83.83.83.63.73.73.63.83.73.63.43.63.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.50.50.60.50.50.50.50.60.70.60.40.60.60.60.60.60.6
Percentage of Revenues0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions pfg:SubsegmentSpecialtyBenefitsInsurance0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentUSInsuranceSolutions, pfg:SubsegmentUSInsuranceSolutionsEliminations


Revenue
Period End2021-06-302020-06-302019-12-312019-09-302019-06-302018-12-312018-09-302018-06-302017-12-312017-09-302017-06-30
Value-0.1-0.1-0.10.0-0.1-0.10.0-0.1-0.10.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.0-0.0-0.00.0-0.0-0.00.0-0.0-0.00.0-0.0
Percentage of Revenues-0.0-0.0-0.00.0-0.0-0.00.0-0.0-0.00.0-0.0
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentUSInsuranceSolutions pfg:SubsegmentUSInsuranceSolutionsEliminations0.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:OperatingSegments, pfg:CorporateAndRegional, pfg:SegmentPrincipalInternational


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value0.70.80.20.20.30.20.20.30.20.20.10.20.30.30.10.2
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Revenues us-gaap:OperatingSegments pfg:CorporateAndRegional pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, pfg:SegmentGeographicalAreaEliminations, pfg:SegmentPrincipalInternational


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-0.4-0.3-0.3-0.3-0.3-0.2-0.3-0.3-0.2-0.40.1-0.2-0.4-0.4-0.5-0.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.10.0-0.0-0.1-0.1-0.1-0.1
Percentage of Revenues-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.00.0-0.0-0.0-0.0-0.0-0.0
Percentage of Revenues us-gaap:OperatingSegments pfg:SegmentGeographicalAreaEliminations pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, srt:Asia, pfg:SegmentPrincipalInternational


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value33323030272828272727242626282927
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.24.44.14.54.24.03.74.04.74.84.33.04.34.84.94.7
Percentage of Revenues0.91.00.80.90.90.60.70.60.70.70.70.60.81.00.90.6
Percentage of Revenues us-gaap:OperatingSegments srt:Asia pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, srt:LatinAmerica, pfg:SegmentPrincipalInternational


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value92898780748187878888899296928281
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax11.712.111.911.811.411.611.412.615.115.715.510.715.715.313.814.0
Percentage of Revenues2.62.82.32.42.41.82.22.02.22.42.42.13.03.22.51.8
Percentage of Revenues us-gaap:OperatingSegments srt:LatinAmerica pfg:SegmentPrincipalInternational0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Subsegments

pfg:SubsegmentUSInsuranceSolutionsEliminations


Revenue
Period End2020-09-302020-06-302019-09-302019-06-30
Value0.0-0.10.0-0.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.0-0.00.0-0.0
Percentage of Revenues0.0-0.00.0-0.0
Percentage of Revenues pfg:SubsegmentUSInsuranceSolutionsEliminations0.00.00.00.0

Revenues

us-gaap:Revenues

us-gaap:Revenues


Revenues
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312009-09-302009-06-302009-03-31
Value35393208376533103114455140474458397237433770434832342883323746273178304935132818302530362807324032592657290824842606247826722239221021662295270421182095205920882342221923722288223322642232227021572188
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Revenues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Revenuespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-2.2-0.31.0-0.10.60.1-0.8-1.2-2.4-0.4
Percentage of Revenues-0.1-0.00.0-0.00.00.0-0.0-0.0-0.1-0.0
Percentage of Revenues-0.1-0.00.0-0.00.00.0-0.0-0.0-0.1-0.0
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Revenuespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value3690321230044442393843393965373037674344
Percentage of Revenues98.097.096.597.697.397.399.899.699.999.9
Percentage of Revenues98.097.096.597.697.397.399.899.699.999.9
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Revenuespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value7195106100102112-2.34.4-6.42.1
Percentage of Revenues1.92.93.42.22.52.5-0.10.1-0.20.0
Percentage of Revenues1.92.93.42.22.52.5-0.10.1-0.20.0
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany, srt:ReportableLegalEntities


Revenuespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value5.43.33.08.65.85.89.810122.3
Percentage of Revenues0.10.10.10.20.10.10.20.30.30.1
Percentage of Revenues0.10.10.10.20.10.10.20.30.30.1
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Revenues us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Revenuesus-gaap:
Period End2021-03-312020-03-31
Value-3.1-2.4
Percentage of Revenues-0.1-0.1
Percentage of Revenues-0.1-0.1
Percentage of Revenues pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations100.0100.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Revenuesus-gaap:
Period End2021-03-312020-03-31
Value31374445
Percentage of Revenues97.897.7
Percentage of Revenues97.897.7
Percentage of Revenues pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities100.0100.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Revenuesus-gaap:
Period End2021-03-312020-03-31
Value83100
Percentage of Revenues2.62.2
Percentage of Revenues2.62.2
Percentage of Revenues pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities100.0100.0

srt:ParentCompany, srt:ReportableLegalEntities


Revenuesus-gaap:
Period End2021-03-312020-03-31
Value-8.88.6
Percentage of Revenues-0.30.2
Percentage of Revenues-0.30.2
Percentage of Revenues srt:ParentCompany srt:ReportableLegalEntities100.0100.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value302165295634296627278484271309246903276087270238267918259419243036258758252104253636253941247933240153235496228014230367223074217570218685215365222270222494219087216422218322211193208191201687196512200762161926159193152050153738148298143302149278147549145631137759
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Assetspfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-39939.3-38168.5-37226.3-32415.2-36049.1-36666.7-35050.6-30072.0
Percentage of Assets-13.5-13.7-13.7-13.1-13.1-13.6-13.1-12.4
Percentage of Assets-13.5-13.7-13.7-13.1-13.1-13.6-13.1-12.4
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Assetspfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value294238276250269082245048274431268779266586242876
Percentage of Assets99.299.299.299.299.499.599.599.9
Percentage of Assets99.299.299.299.299.499.599.599.9
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Assetspfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2084519910194721707818841191211817415126
Percentage of Assets7.07.17.26.96.87.16.86.2
Percentage of Assets7.07.17.26.96.87.16.86.2
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany, srt:ReportableLegalEntities


Assetspfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2148220492199801719218863190031820815104
Percentage of Assets7.27.47.47.06.87.06.86.2
Percentage of Assets7.27.47.47.06.87.06.86.2
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

pfg:VariableInterestEntityPrimaryBeneficiaryMandatoryRetirementSavings


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3900541627419953706536849315353989137915
Percentage of Assets12.914.114.213.313.612.814.415.6
Percentage of Assets12.914.114.213.313.612.814.415.6
Percentage of Assets pfg:VariableInterestEntityPrimaryBeneficiaryMandatoryRetirementSavings100.0100.0100.0100.0100.0100.0100.0100.0

pfg:VariableInterestEntityPrimaryBeneficiaryRealEstate


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value632543499482452421479379
Percentage of Assets0.20.20.20.20.20.20.20.2
Percentage of Assets0.20.20.20.20.20.20.20.2
Percentage of Assets pfg:VariableInterestEntityPrimaryBeneficiaryRealEstate100.0100.0100.0100.0100.0100.0100.0100.0

pfg:VariableInterestEntityPrimaryBeneficiaryResidentialMortgageLoans


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value654686319
Percentage of Assets0.20.20.1
Percentage of Assets0.20.20.1
Percentage of Assets pfg:VariableInterestEntityPrimaryBeneficiaryResidentialMortgageLoans100.0100.0100.0

pfg:VariableInterestEntityPrimaryBeneficiarySponsoredInvestmentFunds


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value484449419395363339331526
Percentage of Assets0.20.20.10.10.10.10.10.2
Percentage of Assets0.20.20.10.10.10.10.10.2
Percentage of Assets pfg:VariableInterestEntityPrimaryBeneficiarySponsoredInvestmentFunds100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4077643306432333794337665323314080238922
Percentage of Assets13.514.614.613.613.913.114.816.0
Percentage of Assets13.514.614.613.613.913.114.816.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0100.0100.0100.0100.0100.0

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

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Assetsus-gaap:
Period End2021-03-312020-12-31
Value-37487.8-39939.3
Percentage of Assets-12.7-13.5
Percentage of Assets-12.7-13.5
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations100.0100.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Assetsus-gaap:
Period End2021-03-312020-12-31
Value293310294238
Percentage of Assets99.299.2
Percentage of Assets99.299.2
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities100.0100.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Assetsus-gaap:
Period End2021-03-312020-12-31
Value1949320845
Percentage of Assets6.67.0
Percentage of Assets6.67.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities100.0100.0

srt:ParentCompany, srt:ReportableLegalEntities


Assetsus-gaap:
Period End2021-03-312020-12-312019-12-312018-12-31
Value20319214821886315104
Percentage of Assets6.97.26.86.2
Percentage of Assets6.97.26.86.2
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, pfg:TradingSecurities, us-gaap:CollateralizedDebtObligations


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value1220202020
Percentage of Assets0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary pfg:TradingSecurities us-gaap:CollateralizedDebtObligations100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, pfg:TradingSecurities, us-gaap:CommercialMortgageBackedSecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value2626272728
Percentage of Assets0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary pfg:TradingSecurities us-gaap:CommercialMortgageBackedSecurities100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, pfg:TradingSecurities, us-gaap:OtherDebtSecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value8.68.79.41013
Percentage of Assets0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary pfg:TradingSecurities us-gaap:OtherDebtSecurities100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, pfg:TradingSecurities, us-gaap:ResidentialMortgageBackedSecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value147170190220282
Percentage of Assets0.00.10.10.10.1
Percentage of Assets0.00.10.10.10.1
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary pfg:TradingSecurities us-gaap:ResidentialMortgageBackedSecurities100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:AvailableforsaleSecurities, us-gaap:CollateralizedDebtObligations


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value36054150402737373215
Percentage of Assets1.21.41.41.31.2
Percentage of Assets1.21.41.41.31.2
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:AvailableforsaleSecurities us-gaap:CollateralizedDebtObligations100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:AvailableforsaleSecurities, us-gaap:CommercialMortgageBackedSecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value51394940494248714850
Percentage of Assets1.71.71.71.71.8
Percentage of Assets1.71.71.71.71.8
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:AvailableforsaleSecurities us-gaap:CommercialMortgageBackedSecurities100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:AvailableforsaleSecurities, us-gaap:CorporateDebtSecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value295296296242238
Percentage of Assets0.10.10.10.10.1
Percentage of Assets0.10.10.10.10.1
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:AvailableforsaleSecurities us-gaap:CorporateDebtSecurities100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:AvailableforsaleSecurities, us-gaap:OtherDebtSecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value66666785704573858191
Percentage of Assets2.22.32.42.73.0
Percentage of Assets2.22.32.42.73.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:AvailableforsaleSecurities us-gaap:OtherDebtSecurities100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:AvailableforsaleSecurities, us-gaap:ResidentialMortgageBackedSecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value27742797298630422982
Percentage of Assets0.90.91.01.11.1
Percentage of Assets0.90.91.01.11.1
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:AvailableforsaleSecurities us-gaap:ResidentialMortgageBackedSecurities100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities, us-gaap:InvestmentType

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, pfg:OtherLimitedPartnershipAndFundInterests


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value11121033999956911
Percentage of Assets0.40.30.30.30.3
Percentage of Assets0.40.30.30.30.3
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary pfg:OtherLimitedPartnershipAndFundInterests100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityNotPrimaryBeneficiary, us-gaap:EquitySecurities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302019-12-31
Value125119121105123
Percentage of Assets0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary us-gaap:EquitySecurities100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Assetsus-gaap:
Period End2020-12-312019-12-31
Value155724158439
Percentage of Assets52.557.4
Percentage of Assets52.557.4
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

pfg:SegmentCorporate


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value394141723898341529302359349945025478520248124528446645085083480740214130507847894773455643814172416741334276372640643840386532983381349849604257398437573529380143334947
Percentage of Assets1.31.41.31.21.11.01.31.72.02.02.01.81.81.82.01.91.71.82.22.12.12.12.01.91.91.92.01.71.91.81.91.61.71.73.12.72.62.42.42.72.93.4
Percentage of Assets1.31.41.31.21.11.01.31.72.02.02.01.81.81.82.01.91.71.82.22.12.12.12.01.91.91.92.01.71.91.81.91.61.71.73.12.72.62.42.42.72.93.4
Percentage of Assets pfg:SegmentCorporate100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SegmentPrincipalGlobalInvestors


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value230521872294222821972173236322382312229623012362228922342322241723921866195219501853179218801149111210941175120011831165131212731255120712821265121817951833161514591308
Percentage of Assets0.80.70.80.80.80.90.90.80.90.90.90.90.90.90.91.01.00.80.90.80.80.80.90.50.50.50.50.60.50.60.60.60.60.60.80.80.81.21.21.11.00.9
Percentage of Assets0.80.70.80.80.80.90.90.80.90.90.90.90.90.90.91.01.00.80.90.80.80.80.90.50.50.50.50.60.50.60.60.60.60.60.80.80.81.21.21.11.00.9
Percentage of Assets pfg:SegmentPrincipalGlobalInvestors100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SegmentPrincipalInternational


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value481285110951707458334538139445488574892751285494774670149706494725292351684497044747647440451184674645249445235058850458528655362853531569745714454191542435315853637561221926718849172291724815662153661364012774
Percentage of Assets15.917.317.416.516.716.017.718.119.119.119.219.219.620.920.420.019.820.119.820.320.320.523.123.423.824.124.426.326.225.726.126.427.328.011.911.811.311.210.610.79.18.8
Percentage of Assets15.917.317.416.516.716.017.718.119.119.119.219.219.620.920.420.019.820.119.820.320.320.523.123.423.824.124.426.326.225.726.126.427.328.011.911.811.311.210.610.79.18.8
Percentage of Assets pfg:SegmentPrincipalInternational100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SegmentRetirementAndIncomeSolutions


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value215437206958207288196631191053174996192698186731181663176073163833176653170608168851169757166508162151158505152721153275148097144101139678137860
Percentage of Assets71.370.069.970.670.470.969.869.167.867.967.468.367.766.666.867.267.567.367.066.566.466.263.962.9
Percentage of Assets71.370.069.970.670.470.969.869.167.867.967.468.367.766.666.867.267.567.367.066.566.466.263.962.9
Percentage of Assets pfg:SegmentRetirementAndIncomeSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SegmentUSInsuranceSolutions


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value323523120531438303752974527928286692783827178263702538825507252662511825092244962411223553231442360623101225962215622180220712206821554212152102220602200331975419472195181901718682180821766917790173181721616558
Percentage of Assets10.710.610.610.911.011.310.410.310.110.210.49.910.09.99.99.910.010.010.210.210.410.410.110.39.99.99.89.89.69.89.69.89.99.711.711.711.911.512.012.111.511.4
Percentage of Assets10.710.610.610.911.011.310.410.310.110.210.49.910.09.99.99.910.010.010.210.210.410.410.110.39.99.99.89.89.69.89.69.89.99.711.711.711.911.512.012.111.511.4
Percentage of Assets pfg:SegmentUSInsuranceSolutions100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value285543279908279754262485255725233691261137254996253511246120231188246841240258241252240918235737228820224716217623219313212169207199209222205601212436211937208797205997207580200855198167192079187050190877152092149286142555143986138285133012138610137176135746129743
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets94.594.794.394.394.394.694.694.494.694.995.195.495.395.194.995.195.395.495.495.295.195.295.795.595.695.395.395.295.195.195.295.295.295.193.993.893.893.793.292.892.993.093.294.2

us-gaap:Liabilities pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Liabilitiespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-1718.5-1634.9-1735.8-1742.6-1840.9-1660.4-1939.8-1678.8
Percentage of Liabilities-0.6-0.6-0.7-0.7-0.7-0.7-0.8-0.7
Percentage of Assets-0.6-0.6-0.6-0.7-0.7-0.6-0.7-0.7
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations4.34.34.75.45.14.55.55.6

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Liabilitiespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value275270257978251293229717257292251054249694227759
Percentage of Liabilities98.498.398.398.398.598.598.598.5
Percentage of Assets92.892.692.693.093.292.993.293.7
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities93.693.493.493.793.893.493.793.8

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Liabilitiespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value12791299143014321440140315831393
Percentage of Liabilities0.50.50.60.60.60.60.60.6
Percentage of Assets0.40.50.50.60.50.50.60.6
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities6.16.57.38.47.67.38.79.2

srt:ParentCompany, srt:ReportableLegalEntities


Liabilitiespfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value49234842473742844245419941733714
Percentage of Liabilities1.81.81.91.81.61.61.61.6
Percentage of Assets1.71.71.71.71.51.61.61.5
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities22.923.623.724.922.522.122.924.6

us-gaap:Liabilities us-gaap:ConsolidatedEntities

pfg:VariableInterestEntityPrimaryBeneficiaryMandatoryRetirementSavings


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3857341177415273666336454312563952437579
Percentage of Liabilities13.514.714.814.014.313.415.116.3
Percentage of Assets12.813.914.013.213.412.714.315.5
Percentage of Assets pfg:VariableInterestEntityPrimaryBeneficiaryMandatoryRetirementSavings98.998.998.998.998.999.199.199.1

pfg:VariableInterestEntityPrimaryBeneficiaryRealEstate


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3534212829268870
Percentage of Liabilities0.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:VariableInterestEntityPrimaryBeneficiaryRealEstate5.76.34.35.86.66.418.318.6

pfg:VariableInterestEntityPrimaryBeneficiarySponsoredInvestmentFunds


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value6.79.93.25.38.38.32.23.6
Percentage of Liabilities0.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:VariableInterestEntityPrimaryBeneficiarySponsoredInvestmentFunds1.42.20.81.32.32.40.70.7

us-gaap:VariableInterestEntityPrimaryBeneficiary


Liabilitiesus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value3861641221415523669636492313263971337742
Percentage of Liabilities13.514.714.914.014.313.415.216.3
Percentage of Assets12.813.914.013.213.512.714.415.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary94.795.296.196.796.996.997.397.0

us-gaap:Liabilities us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Liabilitiesus-gaap:
Period End2021-03-312020-12-31
Value-1775.5-1718.5
Percentage of Liabilities-0.6-0.6
Percentage of Assets-0.6-0.6
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations4.74.3

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Liabilitiesus-gaap:
Period End2021-03-312020-12-31
Value275567275270
Percentage of Liabilities98.498.4
Percentage of Assets93.292.8
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities94.093.6

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Liabilitiesus-gaap:
Period End2021-03-312020-12-31
Value12031279
Percentage of Liabilities0.40.5
Percentage of Assets0.40.4
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities6.26.1

srt:ParentCompany, srt:ReportableLegalEntities


Liabilitiesus-gaap:
Period End2021-03-312020-12-312019-12-312018-12-31
Value4913492342453714
Percentage of Liabilities1.81.81.61.6
Percentage of Assets1.71.71.51.5
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities24.222.922.524.6

us-gaap:Liabilities us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Liabilitiesus-gaap:
Period End2020-12-312019-12-31
Value7343888455
Percentage of Liabilities26.333.9
Percentage of Assets24.832.0
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees47.255.8

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value302165295634296627278484271309246903276087270238267918259419243036258758252104253636253941247933240153235496228014230367223074217570218685215365222270222494219087216422218322211193208191201687196512200762161926159193152050153738148298143302149278147549145631137759
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Liabilities
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-39939.3-38168.5-37226.3-32415.2-36049.1-36666.7-35050.6-30072.0
Percentage of LiabilitiesAndStockholdersEquity-13.5-13.7-13.7-13.1-13.1-13.6-13.1-12.4
Percentage of Assets-13.5-13.7-13.7-13.1-13.1-13.6-13.1-12.4
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Liabilities
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value294238276250269082245048274431268779266586242876
Percentage of LiabilitiesAndStockholdersEquity99.299.299.299.299.499.599.599.9
Percentage of Assets99.299.299.299.299.499.599.599.9
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Liabilities
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2084519910194721707818841191211817415126
Percentage of LiabilitiesAndStockholdersEquity7.07.17.26.96.87.16.86.2
Percentage of Assets7.07.17.26.96.87.16.86.2
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0

srt:ParentCompany, srt:ReportableLegalEntities


Liabilities
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value2148220492199801719218863190031820815104
Percentage of LiabilitiesAndStockholdersEquity7.27.47.47.06.87.06.86.2
Percentage of Assets7.27.47.47.06.87.06.86.2
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Liabilities
Period End2021-03-312020-12-31
Value-37487.8-39939.3
Percentage of LiabilitiesAndStockholdersEquity-12.7-13.5
Percentage of Assets-12.7-13.5
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations100.0100.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Liabilities
Period End2021-03-312020-12-31
Value293310294238
Percentage of LiabilitiesAndStockholdersEquity99.299.2
Percentage of Assets99.299.2
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities100.0100.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Liabilities
Period End2021-03-312020-12-31
Value1949320845
Percentage of LiabilitiesAndStockholdersEquity6.67.0
Percentage of Assets6.67.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities100.0100.0

srt:ParentCompany, srt:ReportableLegalEntities


Liabilities
Period End2021-03-312020-12-312019-12-312018-12-31
Value20319214821886315104
Percentage of LiabilitiesAndStockholdersEquity6.97.26.86.2
Percentage of Assets6.97.26.86.2
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value162331540516558156501524312907146181480414034126941139011700116391218612849119961116810616102271079410499100419311962096931042210184103161040199879684927893039723975398279422936496379980104021018797277893
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.45.25.65.65.65.25.35.55.24.94.74.54.64.85.14.84.74.54.54.74.74.64.34.54.44.74.64.84.84.74.74.64.74.86.06.26.26.16.57.07.06.96.75.7

us-gaap:StockholdersEquity pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-38220.8-36533.6-35490.5-30672.6-34208.2-35006.3-33110.8-28393.2
Percentage of StockholdersEquity-230.8-233.4-232.8-237.6-234.0-236.5-235.9-249.3
Percentage of Assets-12.9-13.1-13.1-12.4-12.4-13.0-12.4-11.7
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations95.795.795.394.694.995.594.594.4

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1865417923174481502616806172871651914659
Percentage of StockholdersEquity112.7114.5114.5116.4115.0116.8117.7128.7
Percentage of Assets6.36.46.46.16.16.46.26.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities6.36.56.56.16.16.46.26.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1956518610180421564617401177181659113733
Percentage of StockholdersEquity118.2118.9118.4121.2119.0119.7118.2120.6
Percentage of Assets6.66.76.76.36.36.66.25.7
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities93.993.592.791.692.492.791.390.8

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1655815650152431290714618148041403411390
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.65.65.65.25.35.55.24.7
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities77.176.476.375.177.577.977.175.4

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

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Stockholders
Period End2021-03-312020-12-31
Value-35712.3-38220.8
Percentage of StockholdersEquity-231.8-230.8
Percentage of Assets-12.1-12.9
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations95.395.7

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-31
Value1742218654
Percentage of StockholdersEquity113.1112.7
Percentage of Assets5.96.3
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities5.96.3

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-31
Value1828919565
Percentage of StockholdersEquity118.7118.2
Percentage of Assets6.26.6
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities93.893.9

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-312019-12-312018-12-31
Value15405165581461811390
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets5.25.65.34.7
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities75.877.177.575.4

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value-448.6-458.2-460.5-403.7-414.2-424.6-435.6-434.2-444.2-501.4-512.9-425.8-434.5-443.3-371.1-395.6-399.8-404.1-408.4-426.2-434.2-442.2-450.2-375.2-387.1-399.1-411.1-145.2-148.8-155.9-488.5
Percentage of StockholdersEquity-2.8-3.0-2.8-2.6-2.7-3.3-3.0-2.9-3.2-3.9-4.5-3.6-3.7-3.6-2.9-3.3-3.6-3.8-4.0-3.9-4.1-4.4-4.8-3.9-4.0-3.8-4.0-1.4-1.4-1.6-5.0
Percentage of Assets-0.1-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value29161860851025374615964
Percentage of StockholdersEquity0.20.10.10.40.60.80.40.50.40.50.6
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2020-12-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value185361596457543442566773858682716972627850312.6-10.5-8.7
Percentage of StockholdersEquity0.10.40.40.50.60.50.50.30.30.50.60.70.80.80.80.70.70.80.60.80.50.30.0-0.1-0.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value355527644138361433881350280630662279129419024844791414701400133099583115601439113673298195312591202117412488781418
Percentage of StockholdersEquity21.917.925.023.122.210.519.220.716.210.21.72.13.87.511.411.711.99.48.114.513.711.37.910.29.812.111.811.412.09.114.5
Percentage of Assets1.20.91.41.31.20.51.01.10.90.50.10.10.20.40.60.60.60.40.40.70.60.50.30.50.40.60.50.50.60.40.9
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value1803953238317471450-599.210371307647-418.9-1565.1-1347.6-1137.9-469.316547-116.1-455.1-675.291-19.3-356.1-882.5-524.4-326.62850380599183640
Percentage of StockholdersEquity11.16.214.411.29.5-4.67.18.84.6-3.3-13.7-11.5-9.8-3.91.30.4-1.0-4.3-6.60.9-0.2-3.5-9.5-5.5-3.40.30.53.75.81.96.6
Percentage of Assets0.60.30.80.60.5-0.20.40.50.2-0.2-0.6-0.5-0.5-0.20.10.0-0.0-0.2-0.30.0-0.0-0.2-0.4-0.2-0.10.00.00.20.30.10.4
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value-1333.3-1368.9-1312.9-1524.5-1608.9-1627.2-1341.8-1353.6-1198.8-1222.1-1259.5-1166.1-1142.2-909.8-918.5-945.2-1031.8-1030.4-1093.8-1035.1-1019.5-1031.3-1148.2-1116.4-867.1-819.6-686.8-563.1-373.9-361.5-106.9
Percentage of StockholdersEquity-8.2-8.9-7.9-9.7-10.6-12.6-9.2-9.1-8.5-9.6-11.1-10.0-9.8-7.5-7.1-7.9-9.2-9.7-10.7-9.6-9.7-10.3-12.3-11.6-8.9-7.9-6.7-5.5-3.6-3.7-1.1
Percentage of Assets-0.4-0.5-0.4-0.5-0.6-0.7-0.5-0.5-0.4-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.4-0.5-0.4-0.5-0.5-0.5-0.5-0.4-0.4-0.3-0.3-0.2-0.2-0.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value2417200328493556315034822515319833152259297729262342233524702795200615342719221822552142256425142264145218631270174213932371170711101661417722791646165128331434216919841877226818271629224026081344
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.71.01.31.21.40.91.21.20.91.21.10.90.91.01.10.80.71.21.01.01.01.21.21.00.70.90.60.80.71.10.80.60.82.61.41.11.11.91.01.51.31.30.00.00.01.60.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-1012.4-974.1-1082.0-1043.0-1133.6-1059.8-1268.1-1103.2
Percentage of CashAndCashEquivalentsAtCarryingValue-35.5-27.4-34.3-29.9-45.1-33.1-38.2-37.1
Percentage of Assets-0.3-0.3-0.4-0.4-0.4-0.4-0.5-0.5
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations2.52.62.93.23.12.93.63.7

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value27403468305434082656336423653096
Percentage of CashAndCashEquivalentsAtCarryingValue96.297.596.997.9105.6105.271.3104.0
Percentage of Assets0.91.21.11.41.01.20.91.3
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.91.31.11.41.01.30.91.3

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value8196937236635985921603649
Percentage of CashAndCashEquivalentsAtCarryingValue28.719.523.019.123.818.548.321.8
Percentage of Assets0.30.20.30.30.20.20.60.3
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities3.93.53.73.93.23.18.84.3

srt:ParentCompany, srt:ReportableLegalEntities


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value302368454453394301615334
Percentage of CashAndCashEquivalentsAtCarryingValue10.610.414.413.015.79.418.611.2
Percentage of Assets0.10.10.20.20.10.10.20.1
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities1.41.82.32.62.11.63.42.2

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Cash
Period End2021-06-302020-12-31
Value3928
Percentage of CashAndCashEquivalentsAtCarryingValue1.71.0
Percentage of Assets0.00.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.10.1

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Cash
Period End2021-03-312020-12-31
Value-310.7-298.6
Percentage of CashAndCashEquivalentsAtCarryingValue-15.5-10.5
Percentage of Assets-0.1-0.1
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.80.7

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Cash
Period End2021-03-312020-12-31
Value15732188
Percentage of CashAndCashEquivalentsAtCarryingValue78.676.8
Percentage of Assets0.50.7
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.50.7

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Cash
Period End2021-03-312020-12-31
Value425657
Percentage of CashAndCashEquivalentsAtCarryingValue21.323.1
Percentage of Assets0.10.2
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities2.23.2

srt:ParentCompany, srt:ReportableLegalEntities


Cash
Period End2021-03-312020-12-312019-12-312018-12-31
Value314302394334
Percentage of CashAndCashEquivalentsAtCarryingValue15.710.615.711.2
Percentage of Assets0.10.10.10.1
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities1.51.42.12.2

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value241720032849355631503482251531983315225929772926234224702719
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.71.01.31.21.40.91.21.20.91.21.10.91.01.2

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value-1012.4-974.1-1082.0-1043.0-1133.6-1059.8-1268.1-921.2-1103.2-1123.5-887.8-990.5-1481.2
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents-35.5-27.4-34.3-29.9-45.1-33.1-38.2-40.8-37.1-38.4-37.9-40.1-54.5
Percentage of Assets-0.3-0.3-0.4-0.4-0.4-0.4-0.5-0.4-0.5-0.4-0.4-0.4-0.6
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations2.52.62.93.23.12.93.60.03.70.00.00.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value2740346830543408265633642365248430963033244820012114
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents96.297.596.997.9105.6105.271.3110.0104.0103.6104.681.077.8
Percentage of Assets0.91.21.11.41.01.20.91.01.31.21.00.80.9
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.91.31.11.41.01.30.90.01.30.00.00.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value81969372366359859216034266497065306171203
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents28.719.523.019.123.818.548.318.921.824.122.625.044.2
Percentage of Assets0.30.20.30.30.20.20.60.20.30.30.20.20.5
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities3.93.53.73.93.23.18.80.04.30.00.00.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Cash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312016-12-31
Value302368454453394301615270334310250842882
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents10.610.414.413.015.79.418.612.011.210.610.734.132.5
Percentage of Assets0.10.10.20.20.10.10.20.10.10.10.10.30.4
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities1.41.82.32.62.11.63.40.02.20.00.00.00.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Cash
Period End2021-03-312020-12-312020-03-312019-12-31
Value-310.7-298.6-432.1-1133.6
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents-15.5-10.5-12.4-45.1
Percentage of Assets-0.1-0.1-0.2-0.4
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.80.70.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Cash
Period End2021-03-312020-12-312020-03-312019-12-31
Value1573218829012656
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents78.676.883.3105.6
Percentage of Assets0.50.71.21.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.50.70.00.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Cash
Period End2021-03-312020-12-312020-03-312019-12-31
Value425657560598
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents21.323.116.123.8
Percentage of Assets0.10.20.20.2
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities2.23.20.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Cash
Period End2021-03-312020-12-312020-03-312019-12-312018-12-312017-12-312016-12-31
Value314302453394334842882
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents15.710.613.015.711.234.132.5
Percentage of Assets0.10.10.20.10.10.30.4
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities1.51.40.02.12.20.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-31
Value16991701171116531630161616931690111111101100112811031096106810551033103210201034103710371009100597098110071034108510751100112711381197543548542490482413345344345386375
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 Assets0.60.60.60.60.60.70.60.60.40.40.50.40.40.40.40.40.40.40.40.40.50.50.50.50.40.40.50.50.50.50.50.60.60.60.30.30.40.30.30.30.20.20.20.30.0

us-gaap:Goodwill pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Goodwillpfg:
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1092103410129971075107211111100
Percentage of Goodwill63.962.662.161.763.563.4100.0100.0
Percentage of Assets0.40.40.40.40.40.40.40.5
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.40.40.40.40.40.40.40.5

us-gaap:Goodwill us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Goodwillus-gaap:
Period End2021-03-312020-12-31
Value10821092
Percentage of Goodwill63.663.9
Percentage of Assets0.40.4
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.40.4

us-gaap:Goodwill us-gaap:StatementBusinessSegments

pfg:SegmentCorporate


Goodwillus-gaap:
Period End2020-12-312019-12-312019-09-302018-12-312010-12-312009-12-31
Value1.01.01.02.11.545
Percentage of Goodwill0.10.10.10.20.411.7
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets pfg:SegmentCorporate0.00.00.00.00.00.0

pfg:SegmentPrincipalGlobalInvestors


Goodwillus-gaap:
Period End2020-12-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value320317306307247242252237241239237169169
Percentage of Goodwill18.818.718.127.923.123.825.023.521.944.149.148.943.7
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.20.10.1
Percentage of Assets pfg:SegmentPrincipalGlobalInvestors14.013.413.713.410.612.413.420.218.418.712.912.90.0

pfg:SegmentPrincipalInternational


Goodwillus-gaap:
Period End2020-12-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value6566426506767076646426417301791275856
Percentage of Goodwill38.438.038.561.566.265.163.763.666.333.026.517.114.6
Percentage of Assets0.20.20.20.30.30.30.30.30.40.10.10.00.0
Percentage of Assets pfg:SegmentPrincipalInternational1.31.31.31.41.41.51.31.21.30.90.80.50.0

pfg:SegmentRetirementAndIncomeSolutions


Goodwillus-gaap:
Period End2020-12-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value675675675575757575757
Percentage of Goodwill39.539.940.05.25.45.65.75.75.2
Percentage of Assets0.20.20.30.00.00.00.00.00.0
Percentage of Assets pfg:SegmentRetirementAndIncomeSolutions0.30.40.40.00.00.00.00.00.0

pfg:SegmentUSInsuranceSolutions


Goodwillus-gaap:
Period End2020-12-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value56565656565656565655444343
Percentage of Goodwill3.33.33.35.15.35.55.65.65.110.29.312.611.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets pfg:SegmentUSInsuranceSolutions0.20.20.20.20.20.20.30.30.30.30.30.30.0

Indefinite Lived Intangible Assets Excluding Goodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill


Indefinite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value790783793809797790833856695667668668
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.40.40.40.40.40.50.5

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1677169817231705170917161786180113001310131513531355139213141314131113221325134613581370135913981268129113231361141814211459149715171590927927934893890872827829834851
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.60.60.70.60.70.50.50.50.50.50.50.50.50.50.60.60.60.60.60.60.60.60.60.60.60.60.70.70.70.80.80.60.60.60.60.60.60.60.60.60.6

us-gaap:IntangibleAssetsNetExcludingGoodwill pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Intangible
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value12191194119111921255126313001315
Percentage of IntangibleAssetsNetExcludingGoodwill70.870.169.769.470.270.1100.0100.0
Percentage of Assets0.40.40.40.50.50.50.50.5
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.40.40.40.50.50.50.50.5

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Intangible
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value503510517524531538
Percentage of IntangibleAssetsNetExcludingGoodwill29.229.930.330.629.829.9
Percentage of Assets0.20.20.20.20.20.2
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities2.42.62.73.12.82.8

us-gaap:IntangibleAssetsNetExcludingGoodwill us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Intangible
Period End2021-03-312020-12-31
Value12011219
Percentage of IntangibleAssetsNetExcludingGoodwill70.870.8
Percentage of Assets0.40.4
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.40.4

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Intangible
Period End2021-03-312020-12-31
Value496503
Percentage of IntangibleAssetsNetExcludingGoodwill29.229.2
Percentage of Assets0.20.2
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities2.52.4

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312019-09-302018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-31
Value93210031014521505527568490602231223165183
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.40.40.20.20.20.30.20.30.10.20.10.1

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-31
Value234190
Percentage of OperatingLeaseRightOfUseAsset100.0100.0
Percentage of Assets0.10.1

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value2506252620131862177816641879190718951864184318851866
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.70.70.70.70.70.70.70.70.80.70.7

us-gaap:EquitySecuritiesFvNi pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value19701823174116311838186618811831
Percentage of EquitySecuritiesFvNi97.997.997.998.097.897.899.399.4
Percentage of Assets0.70.70.60.70.70.70.70.8
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.70.70.60.70.70.70.70.8

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Equity
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value4239373241411411
Percentage of EquitySecuritiesFvNi2.12.12.12.02.22.20.70.6
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.20.20.20.20.20.20.10.1

us-gaap:EquitySecuritiesFvNi us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value844873902844837728810774
Percentage of EquitySecuritiesFvNi33.734.644.845.447.143.843.142.0
Percentage of Assets0.30.30.30.30.30.30.30.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary2.12.02.12.22.22.32.02.0

us-gaap:EquitySecuritiesFvNi us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Equity
Period End2021-03-312020-12-31
Value24911970
Percentage of EquitySecuritiesFvNi98.697.9
Percentage of Assets0.80.7
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.80.7

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Equity
Period End2021-03-312020-12-31
Value3442
Percentage of EquitySecuritiesFvNi1.42.1
Percentage of Assets0.00.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.20.2

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

us-gaap:FairValueInputsLevel1, us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value11321152659636617603645655633639661615
Percentage of EquitySecuritiesFvNi45.245.632.834.234.736.334.434.333.434.335.932.7
Percentage of Assets0.40.40.20.20.20.20.20.20.20.20.30.2
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel2, us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value137413741353122611601060123312521261122411821269
Percentage of EquitySecuritiesFvNi54.854.467.265.865.363.765.665.766.665.764.167.3
Percentage of Assets0.50.50.50.40.40.40.40.50.50.50.50.5
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquitySecuritiesFvNi us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueMeasurementsRecurring


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value250625262013186217781664187919071895186418431885
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.90.70.70.70.70.70.70.70.70.80.7
Percentage of Assets us-gaap:FairValueMeasurementsRecurring0.00.00.00.00.00.00.00.00.00.00.00.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value583538122211521381141013561375145413821378142114881522133010921215119712581043109011181068111010501013108310541041106011341068103810341006117592695994210521134132613231677
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.20.20.40.40.50.60.50.50.50.50.60.50.60.60.50.40.50.50.60.50.50.50.50.50.50.50.50.50.50.50.50.50.50.50.60.70.60.60.60.70.80.90.91.2

us-gaap:OtherAssets pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-606.3-579.7-574.8-574.8-571.8-563.8-560.5-556.7
Percentage of OtherAssets-49.6-50.3-41.6-40.7-42.2-41.0-38.5-40.4
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations1.51.51.51.81.61.51.61.9

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value13621302154515471509153816001521
Percentage of OtherAssets111.5113.1111.9109.7111.3111.9110.1110.4
Percentage of Assets0.50.50.60.60.50.60.60.6
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.50.50.60.60.60.60.60.6

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value5841284735396138
Percentage of OtherAssets4.73.62.03.32.62.94.22.8
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.30.20.10.30.20.20.30.3

srt:ParentCompany, srt:ReportableLegalEntities


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value408387382391383360353375
Percentage of OtherAssets33.433.727.727.728.326.224.327.2
Percentage of Assets0.10.10.10.20.10.10.10.2
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities1.91.91.92.32.01.91.92.5

us-gaap:OtherAssets us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Other
Period End2021-03-312020-12-31
Value-593.9-590.3
Percentage of OtherAssets-110.2-48.3
Percentage of Assets-0.2-0.2
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations1.61.5

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Other
Period End2021-03-312020-12-31
Value6731346
Percentage of OtherAssets125.0110.2
Percentage of Assets0.20.5
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.20.5

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Other
Period End2021-03-312020-12-31
Value4057
Percentage of OtherAssets7.44.7
Percentage of Assets0.00.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.20.3

srt:ParentCompany, srt:ReportableLegalEntities


Other
Period End2021-03-312020-12-31
Value419408
Percentage of OtherAssets77.833.4
Percentage of Assets0.10.1
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities2.11.9

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value42794279427942794163367037343763376232663259324532193196317831753126312631253278327032693290328633152514253125292529251626012593257827902671218015761570156415701582157915831584
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.41.41.51.51.51.41.41.41.31.31.31.31.31.31.31.31.31.41.41.51.51.51.51.51.11.21.21.21.21.21.31.31.41.61.41.01.01.11.11.11.11.11.2

us-gaap:LongTermDebt pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-274.9-290.9-297.8-313.9-320.8-336.8-343.7-366.8
Percentage of LongTermDebt-6.4-6.8-7.2-8.6-8.6-8.9-9.1-11.3
Percentage of Assets-0.1-0.1-0.1-0.1-0.1-0.1-0.1-0.2
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.70.80.81.00.90.91.01.2

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value55564344108139138129
Percentage of LongTermDebt1.31.31.01.22.93.73.74.0
Percentage of Assets0.00.00.00.00.00.10.10.1
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.00.00.00.10.10.1

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value274290297313320336343366
Percentage of LongTermDebt6.46.87.28.68.68.99.111.2
Percentage of Assets0.10.10.10.10.10.10.10.2
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities1.31.51.51.81.71.81.92.4

srt:ParentCompany, srt:ReportableLegalEntities


Long
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value42234222411936263625362436243129
Percentage of LongTermDebt98.798.799.098.897.196.396.396.0
Percentage of Assets1.41.51.51.51.31.31.41.3
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities19.720.620.621.119.219.119.920.7

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Long
Period End2021-03-312020-12-31
Value5555
Percentage of LongTermDebt1.31.3
Percentage of Assets0.00.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.0

srt:ParentCompany, srt:ReportableLegalEntities


Long
Period End2021-03-312020-12-312019-12-312018-12-31
Value4224422336253129
Percentage of LongTermDebt98.798.797.196.0
Percentage of Assets1.41.41.31.3
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities20.819.719.220.7

us-gaap:LongTermDebt us-gaap:DebtInstrument

pfg:NonRecourseMortgagesAndNotesPayableConsolidate


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312015-12-31
Value56564310813913812950-0.741
Percentage of LongTermDebt1.31.31.12.93.73.74.01.6-0.01.3
Percentage of Assets0.00.00.00.00.10.10.10.0-0.00.0
Percentage of Assets pfg:NonRecourseMortgagesAndNotesPayableConsolidate0.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayable2.125PercentDue2030


Long
Period End2020-12-312020-09-302020-06-30
Value595595493
Percentage of LongTermDebt13.913.911.8
Percentage of Assets0.20.20.2
Percentage of Assets pfg:NotesPayable2.125PercentDue20300.00.00.0

pfg:NotesPayable3.125PercentDue2023


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value299299299299299298298298298298298298299299299299299299
Percentage of LongTermDebt7.07.07.28.07.97.99.29.49.59.19.19.19.19.19.011.811.511.2
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.2
Percentage of Assets pfg:NotesPayable3.125PercentDue20230.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayable3.1PercentDue2026


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-31
Value347347347347347347347346346
Percentage of LongTermDebt8.18.18.49.39.29.210.710.911.1
Percentage of Assets0.10.10.10.10.10.10.10.10.2
Percentage of Assets pfg:NotesPayable3.1PercentDue20260.00.00.00.00.00.00.00.00.0

pfg:NotesPayable3.3PercentDue2022


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312012-09-30
Value299299299299298298298298297297297297299299299299299298298
Percentage of LongTermDebt7.07.07.28.07.97.99.29.49.59.19.19.19.19.19.011.811.511.213.7
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.2
Percentage of Assets pfg:NotesPayable3.3PercentDue20220.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayable3.4PercentDue2025


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value397397397397397397397396396396396395398398398
Percentage of LongTermDebt9.39.39.510.610.610.612.212.512.712.112.112.112.112.112.0
Percentage of Assets0.10.10.10.10.10.10.20.20.20.20.20.20.20.20.2
Percentage of Assets pfg:NotesPayable3.4PercentDue20250.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayable3.7PercentDue2029


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value494494494493493493
Percentage of LongTermDebt11.611.611.913.213.113.1
Percentage of Assets0.20.20.20.20.20.2
Percentage of Assets pfg:NotesPayable3.7PercentDue20290.00.00.00.00.00.0

pfg:NotesPayable4.35PercentDue2043


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-31
Value296296296296296296296296296296296296299299299299299299
Percentage of LongTermDebt6.96.97.17.97.97.99.19.39.59.09.19.19.19.19.011.811.511.2
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.2
Percentage of Assets pfg:NotesPayable4.35PercentDue20430.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayable4.3PercentDue2046


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-31
Value296296296296296296296296296
Percentage of LongTermDebt6.96.97.17.97.97.99.19.39.5
Percentage of Assets0.10.10.10.10.10.10.10.10.1
Percentage of Assets pfg:NotesPayable4.3PercentDue20460.00.00.00.00.00.00.00.00.0

pfg:NotesPayable4.625PercentDue2042


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312012-09-30
Value296296296296296296296296296296296296299299299299299299299
Percentage of LongTermDebt6.96.97.17.97.97.99.19.39.59.09.19.19.19.19.011.811.511.213.7
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.2
Percentage of Assets pfg:NotesPayable4.625PercentDue20420.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayable4.7PercentDue2055


Long
Period End2020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value395395395395395395395395395395394400400400
Percentage of LongTermDebt9.29.510.610.510.512.112.412.612.012.112.112.212.212.1
Percentage of Assets0.10.10.10.10.10.20.20.20.20.20.20.20.20.2
Percentage of Assets pfg:NotesPayable4.7PercentDue20550.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayable6.05PercentDue2036


Long
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302018-12-312017-12-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312013-12-312012-12-312012-09-302011-12-312010-12-312009-12-31
Value503503503503503503503502502596596596601601601601601601601601601601
Percentage of LongTermDebt11.811.812.113.513.413.415.415.816.118.218.218.318.318.318.123.823.122.527.638.538.038.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.30.30.30.30.30.30.30.30.40.40.40.40.4
Percentage of Assets pfg:NotesPayable6.05PercentDue20360.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pfg:NotesPayableFloatingRateDue2055


Long
Period End2020-12-31
Value395
Percentage of LongTermDebt9.2
Percentage of Assets0.1
Percentage of Assets pfg:NotesPayableFloatingRateDue20550.0

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

us-gaap:FairValueInputsLevel2, us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value4796464449084845467237814015403838873261312931613182324533933378337432863242351135043401336933922703
Percentage of LongTermDebt112.1108.5114.7113.2112.2103.0107.5107.3103.399.896.097.498.9101.5106.8106.4107.9105.1103.7107.1107.2104.0102.4103.2106.8
Percentage of Assets1.61.61.71.71.71.51.51.51.51.31.31.21.31.31.31.41.41.41.41.51.61.61.51.61.2
Percentage of Assets us-gaap:FairValueInputsLevel2 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:FairValueInputsLevel3, us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-09-302016-06-302016-03-312015-12-312015-09-302014-12-31
Value40404140414010713713613412711488664946534646423882
Percentage of LongTermDebt0.90.91.00.91.01.12.93.63.64.13.93.52.82.11.51.51.61.41.41.31.23.3
Percentage of Assets0.00.00.00.00.00.00.00.10.10.10.10.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:FairValueInputsLevel3 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4279427942794279416336703734376337623266325932453219319631783175312631263125327832703269329032863315251425312529252925162601
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.41.41.51.51.51.41.41.41.31.31.31.31.31.31.31.31.31.41.41.51.51.51.51.51.11.21.21.21.21.2
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4836468549494886471438214122417540233395325732753271331234423425337432863242356535513447341134313437281827862756275226772692
Percentage of LongTermDebt113.0109.5115.7114.2113.2104.1110.4110.9106.9103.999.9100.9101.6103.6108.3107.9107.9105.1103.7108.8108.6105.4103.7104.4103.7112.1110.1109.0108.8106.4103.5
Percentage of Assets1.61.61.71.81.71.51.51.51.51.31.31.31.31.31.41.41.41.41.41.51.61.61.61.61.51.31.31.31.31.31.3
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Income Tax Liabilities Net

us-gaap:DeferredIncomeTaxLiabilitiesNet

us-gaap:DeferredIncomeTaxLiabilitiesNet


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-31
Value232420652330210620611450179619281687131895891188790910921515128110489721229123410446978788191035
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.80.80.80.60.70.70.60.50.40.40.40.40.40.60.50.40.40.50.60.50.30.40.40.5

us-gaap:DeferredIncomeTaxLiabilitiesNet pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-524.9-503.4-507.2-521.0-495.1-496.5-495.2-501.9
Percentage of DeferredIncomeTaxLiabilitiesNet-22.5-23.9-24.6-35.9-27.6-25.8-29.3-52.4
Percentage of Assets-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations1.31.31.41.61.41.41.41.7

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value28242590255219512285239721541446
Percentage of DeferredIncomeTaxLiabilitiesNet121.2122.9123.8134.6127.2124.4127.6150.9
Percentage of Assets1.00.90.90.80.80.90.80.6
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities1.00.90.90.80.80.90.80.6

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Deferred
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value312015195.9182113
Percentage of DeferredIncomeTaxLiabilitiesNet1.30.90.81.30.31.01.31.5
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.20.10.10.10.00.10.10.1

us-gaap:DeferredIncomeTaxLiabilitiesNet us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Deferred
Period End2021-03-312020-12-31
Value-554.2-524.9
Percentage of DeferredIncomeTaxLiabilitiesNet-26.8-22.5
Percentage of Assets-0.2-0.2
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations1.51.3

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Deferred
Period End2021-03-312020-12-31
Value25792824
Percentage of DeferredIncomeTaxLiabilitiesNet124.8121.2
Percentage of Assets0.91.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.91.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Deferred
Period End2021-03-312020-12-31
Value4031
Percentage of DeferredIncomeTaxLiabilitiesNet2.01.3
Percentage of Assets0.00.0
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities0.20.2

us-gaap:DeferredIncomeTaxLiabilitiesNet us-gaap:IncomeTaxAuthority

us-gaap:DomesticCountry


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value20111507708803733459663
Percentage of DeferredIncomeTaxLiabilitiesNet86.383.973.973.675.465.964.1
Percentage of Assets0.70.50.30.30.30.20.3
Percentage of Assets us-gaap:DomesticCountry0.00.00.00.00.00.00.0

us-gaap:ForeignCountry


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value319289250288239237371
Percentage of DeferredIncomeTaxLiabilitiesNet13.716.126.126.424.634.135.9
Percentage of Assets0.10.10.10.10.10.10.2
Percentage of Assets us-gaap:ForeignCountry0.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5856587067656768676766676768727069686669686865656969485257709295105103201812387376309265185157122
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.00.00.30.30.20.20.10.10.1

us-gaap:MinorityInterest pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Minority
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value5870676567686766
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Minority
Period End2021-03-312020-12-31
Value5658
Percentage of MinorityInterest100.0100.0
Percentage of Assets0.00.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value231197198204169
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.1

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value259
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value28
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value162331540516558156501524312907146181480414034126941139011700116391218612849119961116810616102271079410499100419311962096931042210184103161040199879684927893039723975398279422936496379980104021018797277893
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.45.25.65.65.65.25.35.55.24.94.74.54.64.85.14.84.74.54.54.74.74.64.34.54.44.74.64.84.84.74.74.64.74.86.06.26.26.16.57.07.06.96.75.7

us-gaap:StockholdersEquity pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-38220.8-36533.6-35490.5-30672.6-34208.2-35006.3-33110.8-28393.2
Percentage of StockholdersEquity-230.8-233.4-232.8-237.6-234.0-236.5-235.9-249.3
Percentage of Assets-12.9-13.1-13.1-12.4-12.4-13.0-12.4-11.7
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations95.795.795.394.694.995.594.594.4

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1865417923174481502616806172871651914659
Percentage of StockholdersEquity112.7114.5114.5116.4115.0116.8117.7128.7
Percentage of Assets6.36.46.46.16.16.46.26.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities6.36.56.56.16.16.46.26.0

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1956518610180421564617401177181659113733
Percentage of StockholdersEquity118.2118.9118.4121.2119.0119.7118.2120.6
Percentage of Assets6.66.76.76.36.36.66.25.7
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities93.993.592.791.692.492.791.390.8

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1655815650152431290714618148041403411390
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.65.65.65.25.35.55.24.7
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities77.176.476.375.177.577.977.175.4

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

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Stockholders
Period End2021-03-312020-12-31
Value-35712.3-38220.8
Percentage of StockholdersEquity-231.8-230.8
Percentage of Assets-12.1-12.9
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations95.395.7

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-31
Value1742218654
Percentage of StockholdersEquity113.1112.7
Percentage of Assets5.96.3
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities5.96.3

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-31
Value1828919565
Percentage of StockholdersEquity118.7118.2
Percentage of Assets6.26.6
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities93.893.9

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-312019-12-312018-12-31
Value15405165581461811390
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets5.25.65.34.7
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities75.877.177.575.4

us-gaap:StockholdersEquity us-gaap:StatementEquityComponents

us-gaap:AccumulatedDefinedBenefitPlansAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value-448.6-458.2-460.5-403.7-414.2-424.6-435.6-434.2-444.2-501.4-512.9-425.8-434.5-443.3-371.1-395.6-399.8-404.1-408.4-426.2-434.2-442.2-450.2-375.2-387.1-399.1-411.1-145.2-148.8-155.9-488.5
Percentage of StockholdersEquity-2.8-3.0-2.8-2.6-2.7-3.3-3.0-2.9-3.2-3.9-4.5-3.6-3.7-3.6-2.9-3.3-3.6-3.8-4.0-3.9-4.1-4.4-4.8-3.9-4.0-3.8-4.0-1.4-1.4-1.6-5.0
Percentage of Assets-0.1-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.2-0.1-0.1-0.1-0.3
Percentage of Assets us-gaap:AccumulatedDefinedBenefitPlansAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedGainLossNetCashFlowHedgeParent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value29161860851025374615964
Percentage of StockholdersEquity0.20.10.10.40.60.80.40.50.40.50.6
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedGainLossNetCashFlowHedgeParent0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges


Stockholders
Period End2020-12-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value185361596457543442566773858682716972627850312.6-10.5-8.7
Percentage of StockholdersEquity0.10.40.40.50.60.50.50.30.30.50.60.70.80.80.80.70.70.80.60.80.50.30.0-0.1-0.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.0
Percentage of Assets us-gaap:AccumulatedNetGainLossFromDesignatedOrQualifyingCashFlowHedges0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value355527644138361433881350280630662279129419024844791414701400133099583115601439113673298195312591202117412488781418
Percentage of StockholdersEquity21.917.925.023.122.210.519.220.716.210.21.72.13.87.511.411.711.99.48.114.513.711.37.910.29.812.111.811.412.09.114.5
Percentage of Assets1.20.91.41.31.20.51.01.10.90.50.10.10.20.40.60.60.60.40.40.70.60.50.30.50.40.60.50.50.60.40.9
Percentage of Assets us-gaap:AccumulatedNetUnrealizedInvestmentGainLoss0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value1803953238317471450-599.210371307647-418.9-1565.1-1347.6-1137.9-469.316547-116.1-455.1-675.291-19.3-356.1-882.5-524.4-326.62850380599183640
Percentage of StockholdersEquity11.16.214.411.29.5-4.67.18.84.6-3.3-13.7-11.5-9.8-3.91.30.4-1.0-4.3-6.60.9-0.2-3.5-9.5-5.5-3.40.30.53.75.81.96.6
Percentage of Assets0.60.30.80.60.5-0.20.40.50.2-0.2-0.6-0.5-0.5-0.20.10.0-0.0-0.2-0.30.0-0.0-0.2-0.4-0.2-0.10.00.00.20.30.10.4
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AccumulatedTranslationAdjustment


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-31
Value-1333.3-1368.9-1312.9-1524.5-1608.9-1627.2-1341.8-1353.6-1198.8-1222.1-1259.5-1166.1-1142.2-909.8-918.5-945.2-1031.8-1030.4-1093.8-1035.1-1019.5-1031.3-1148.2-1116.4-867.1-819.6-686.8-563.1-373.9-361.5-106.9
Percentage of StockholdersEquity-8.2-8.9-7.9-9.7-10.6-12.6-9.2-9.1-8.5-9.6-11.1-10.0-9.8-7.5-7.1-7.9-9.2-9.7-10.7-9.6-9.7-10.3-12.3-11.6-8.9-7.9-6.7-5.5-3.6-3.7-1.1
Percentage of Assets-0.4-0.5-0.4-0.5-0.6-0.7-0.5-0.5-0.4-0.5-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.4-0.5-0.4-0.5-0.5-0.5-0.5-0.4-0.4-0.3-0.3-0.2-0.2-0.1
Percentage of Assets us-gaap:AccumulatedTranslationAdjustment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value162911546216617157211531112972146851487214102127621145611768117061225512921120671123810684102931086310567101099377968597621049210232103691045910057977793739408982697739845943497511001310289106671037298851003490718688801625697519
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.45.25.65.65.65.35.35.55.34.94.74.54.64.85.14.94.74.54.54.74.74.64.34.54.44.74.74.84.84.84.74.64.84.96.06.26.26.36.87.27.17.06.80.00.00.05.80.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-38220.8-36533.6-35490.5-30672.6-34208.2-35006.3-33110.8-28393.2
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-230.0-232.4-231.8-236.4-232.9-235.4-234.8-247.8
Percentage of Assets-12.9-13.1-13.1-12.4-12.4-13.0-12.4-11.7
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations95.795.795.394.694.995.594.594.4

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1871317993175161509116874173561658714725
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest112.6114.5114.4116.3114.9116.7117.6128.5
Percentage of Assets6.36.56.56.16.16.46.26.1
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities6.46.56.56.26.16.56.26.1

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1956518610180421564617401177181659113733
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest117.7118.4117.8120.6118.5119.1117.7119.9
Percentage of Assets6.66.76.76.36.36.66.25.7
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities93.993.592.791.692.492.791.390.8

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1655815650152431290714618148041403411390
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.699.699.699.599.599.599.599.4
Percentage of Assets5.65.65.65.25.35.55.24.7
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities77.176.476.375.177.577.977.175.4

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Stockholders
Period End2021-03-312020-12-31
Value-35712.3-38220.8
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-231.0-230.0
Percentage of Assets-12.1-12.9
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations95.395.7

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-31
Value1747918713
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest113.0112.6
Percentage of Assets5.96.3
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities6.06.4

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-31
Value1828919565
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest118.3117.7
Percentage of Assets6.26.6
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities93.893.9

srt:ParentCompany, srt:ReportableLegalEntities


Stockholders
Period End2021-03-312020-12-31
Value1540516558
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.699.6
Percentage of Assets5.25.6
Percentage of Assets srt:ParentCompany srt:ReportableLegalEntities75.877.1

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:EquityMethodInvestmentNonconsolidatedInvestee

us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees


Stockholders
Period End2020-12-312019-12-31
Value8228569983
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest495.2476.5
Percentage of Assets27.725.3
Percentage of Assets us-gaap:EquityMethodInvestmentNonconsolidatedInvesteeOrGroupOfInvestees52.844.2

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1803953238317471450-599.210371307647-418.9-1565.1-1347.6-1137.9-469.316547-116.1-455.1-675.291-19.3-356.1-882.5-524.4-326.62850380599361183-17.7-0.5621631880550488201409698525272476-351.0-577.9-1042.0-4911.6420
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest11.16.214.311.19.5-4.67.18.84.6-3.3-13.7-11.5-9.7-3.81.30.4-1.0-4.3-6.60.8-0.2-3.5-9.4-5.4-3.30.30.53.75.73.61.9-0.2-0.06.36.58.95.85.02.04.06.65.12.84.8-3.9-6.7-13.0-191.25.6
Percentage of Assets0.60.30.80.60.5-0.20.40.50.2-0.2-0.6-0.5-0.5-0.20.10.0-0.0-0.2-0.30.0-0.0-0.2-0.4-0.2-0.10.00.00.20.30.20.1-0.0-0.00.30.40.60.40.30.10.30.50.40.20.00.00.0-0.80.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1039910351103211029110259102161018210162101301009010060100269993998199259886984597809686964696159598954495249473997599459916983998139798974998199771973097129685966996349617959395809563954795259512949283768295
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest63.866.962.165.567.078.869.368.371.879.187.885.285.481.476.881.987.691.594.188.891.094.9101.898.397.095.197.295.694.197.6100.2104.0104.499.499.698.6102.799.296.293.589.992.496.895.1105.0109.5118.4326.0110.3
Percentage of Assets3.43.53.53.73.84.13.73.83.83.94.13.94.03.93.94.04.14.24.24.24.34.44.44.44.34.54.54.64.54.64.74.85.04.96.06.16.46.36.56.76.46.56.60.00.00.06.90.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value4.84.84.84.84.84.84.84.84.84.84.84.84.84.74.74.74.74.74.74.74.74.74.74.74.64.64.64.64.64.64.64.64.64.64.54.54.54.54.54.54.54.54.54.54.54.54.53.93.9
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.20.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value58565870676567686767666767687270696866696868656569694852577092951051032018123873763092651851571381421321229697
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.40.40.40.40.40.50.50.50.50.50.60.60.60.60.60.60.60.60.60.60.60.70.70.70.70.70.50.50.50.70.91.01.11.00.20.20.14.03.83.02.51.81.61.41.61.51.53.81.3
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.00.00.30.30.20.20.10.10.00.00.00.10.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value1239512199118381152111441111981107410927108051057110290102079904959894828784811279377720752873397131687567346547642061145945581656055405524951254971494047844667454850775130506648084612459144744340416037223414
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest76.178.971.273.374.786.375.473.576.682.889.886.784.678.373.472.872.274.375.069.369.570.573.369.567.161.259.857.355.655.755.356.054.550.650.548.649.546.650.749.947.546.446.745.849.350.051.9144.945.4
Percentage of Assets4.14.14.04.14.24.54.04.04.04.14.23.93.93.83.73.53.43.43.43.33.33.33.13.12.92.92.82.72.72.72.62.62.62.53.13.03.13.03.43.63.43.33.20.00.00.03.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value-8370.2-8104.1-7988.6-7913.6-7913.4-7913.4-7681.6-7598.1-7554.3-7554.2-7400.6-7190.5-7125.5-6928.6-6729.0-6726.7-6677.8-6651.4-6508.6-6476.5-6441.0-6336.9-6231.3-6118.9-6006.3-6006.1-5930.7-5930.5-5857.8-5797.0-5708.0-5707.8-5645.8-5645.3-5554.4-5554.4-5484.9-5345.9-5281.7-5181.7-4961.5-4731.2-4725.3-4725.0-4724.7-4724.4-4722.7-4718.6-4712.2
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-51.4-52.4-48.1-50.3-51.7-61.0-52.3-51.1-53.6-59.2-64.6-61.1-60.9-56.5-52.1-55.7-59.4-62.3-63.2-59.6-60.9-62.7-66.5-63.2-61.5-57.2-58.0-57.2-56.0-57.6-58.4-60.9-60.0-57.4-56.8-56.4-58.1-54.8-52.7-50.4-46.5-45.6-47.8-47.1-52.1-54.4-58.9-183.7-62.7
Percentage of Assets-2.8-2.7-2.7-2.8-2.9-3.2-2.8-2.8-2.8-2.9-3.0-2.8-2.8-2.7-2.6-2.7-2.8-2.8-2.9-2.8-2.9-2.9-2.8-2.8-2.7-2.7-2.7-2.7-2.7-2.7-2.7-2.8-2.9-2.8-3.4-3.5-3.6-3.5-3.6-3.6-3.3-3.2-3.20.00.00.0-3.40.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4.84.84.84.84.84.84.84.84.84.84.84.84.84.74.74.74.74.74.74.74.74.74.74.74.64.64.64.64.64.64.64.64.64.64.54.54.54.54.54.54.54.54.54.5
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStockValue pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Common
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-5.5-5.5-11.0-11.0-11.0-11.0-11.0-11.0
Percentage of CommonStockValue-114.6-114.6-229.2-229.2-229.2-229.2-229.2-229.2
Percentage of Assets-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations0.00.00.00.00.00.00.00.0

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Common
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value5.55.5111111111111
Percentage of CommonStockValue114.6114.6229.2229.2229.2229.2229.2229.2
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities0.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value10399103511032110291102591021610182101621013010090100601002699939981992598869845978096869646961595989544952494739975994599169839981397989749981997719730971296859669963496179593958095639492
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.43.53.53.73.84.13.73.83.83.94.13.94.03.93.94.04.14.24.24.24.34.44.44.44.34.54.54.64.54.64.74.85.04.96.06.16.46.36.56.76.46.56.66.9

us-gaap:AdditionalPaidInCapital pfg:ParentAndSubsidiariesShelfRegistrationDebtGuarantor, us-gaap:ConsolidationItems

pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor, srt:ConsolidationEliminations


Additional
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value-22096.1-22080.6-22038.3-21912.5-21816.2-21664.9-21050.8-21104.5
Percentage of AdditionalPaidInCapital-214.1-214.6-214.8-214.5-214.2-213.2-207.8-209.8
Percentage of Assets-7.4-7.9-8.1-8.9-7.9-8.0-7.9-8.7
Percentage of Assets pfg:ConsolidationEliminationsAndOtherShelfRegistrationDebtGuarantor srt:ConsolidationEliminations55.357.959.267.660.559.160.170.2

pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate, srt:ReportableLegalEntities


Additional
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value1235712364123411224312157120191192712004
Percentage of AdditionalPaidInCapital119.7120.1120.3119.8119.4118.3117.7119.3
Percentage of Assets4.24.44.55.04.44.44.54.9
Percentage of Assets pfg:SubsidiariesPrincipalLifeInsuranceAndOtherConsolidate srt:ReportableLegalEntities4.24.54.65.04.44.54.54.9

pfg:SubsidiaryPrincipalFinancialServicesConsolidate, srt:ReportableLegalEntities


Additional
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value97389716969796689658964591239100
Percentage of AdditionalPaidInCapital94.394.494.594.694.994.990.190.5
Percentage of Assets3.33.53.63.93.53.63.43.7
Percentage of Assets pfg:SubsidiaryPrincipalFinancialServicesConsolidate srt:ReportableLegalEntities46.748.849.856.651.350.450.260.2

srt:ParentCompany, srt:ReportableLegalEntities


Additional
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302018-12-31
Value10321102911025910216101821016210130