NAVI


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

Table of contents



us-gaap:CommonStockValue
us-gaap:StatementEquityComponents
us-gaap:CommonStockSharesIssued

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

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

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

us-gaap:IncomeTaxesPaidNet

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

us-gaap:InterestIncomeExpenseNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario

us-gaap:InterestIncomeOperating
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ConsolidationItems, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario
us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:InterestPaidNet

us-gaap:NetIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario

us-gaap:OperatingExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

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

us-gaap:Assets
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction
us-gaap:StatementBusinessSegments

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:DeferredTaxAssetsLiabilitiesNet

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

us-gaap:MinorityInterest

us-gaap:StockholdersEquity

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementEquityComponents

us-gaap:CommonStockValue

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:TreasuryStockValue

us-gaap:MinorityInterest

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits
us-gaap:FinancingReceivablePortfolioSegment
navi:AllowanceAsPercentageOfEndingLoanBalance
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment
navi:AllowanceAsPercentageOfEndingLoansInRepayment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment
navi:AllowanceCoverageOfChargeOffs
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment
navi:AllowanceCoverageOfChargeOffsAnnualized
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

navi:AllowanceForLoanAndLeaseLossesWriteOffsNetRemaining
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

navi:AssetRecoveryAndBusinessProcessingRevenue
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:FinancingReceivablePortfolioSegment
navi:AverageBalanceOfLoansInRepayment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

navi:CashAndInvestmentsInterestIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

navi:ChangeInMarkToMarketGainsLossesRelatingToInstrumentsStillHeldAtReportingDate
us-gaap:DerivativeInstrumentRisk
us-gaap:FinancingReceivablePortfolioSegment
navi:ChargeOffsAsAPercentageOfAverageLoansInRepaymentAnnualized
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConsolidationItems, us-gaap:StatementScenario
navi:CoreEarningsAdjustmentsToGaap
us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:IncomeStatementLocation
us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:ValuationTechnique
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
navi:FinancingReceivableBeforeAllowanceForCreditLossAndFeeChangeAmount
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment
navi:FinancingReceivableExpectedFutureRecoveriesOfCurrentPeriodDefaults

navi:GoodwillAndAcquiredIntangibleAssetsImpairmentAndAmortizationExpense
us-gaap:ConsolidationItems, us-gaap:StatementScenario
us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:IncomeStatementLocation

navi:MarkToMarketGainLossOnDerivativeAndHedgingActivitiesNet

navi:NetAdjustmentFromChangeInChargeOffRate
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
navi:NetAdjustmentResultingFromChangeInChargeOffRateAsPercentageOfAverageLoansInRepayment
us-gaap:FinancingReceivablePortfolioSegment
navi:NetChargeOffsAsPercentageOfAverageLoansInRepaymentExcludingNetAdjustmentResultingFromChangeInChargeOffRate
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

navi:NonCashInvestingActivityHeldToMaturityAssetBackedSecuritiesRetainedRelatedToSalesOfEducationLoans

navi:NonCashOperatingActivityServicingAssetsRecognizedUponSalesOfEducationLoans

navi:NoninterestIncomeExpensesOtherOperatingIncomeExpenses

navi:OtherIncomeLossAndGainLossOnDerivatives
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:PercentageOfLoansGrantedForbearanceThatMigratedToTroubledDebtRestructuringClassification

navi:ProceedsFromPaymentsOnEducationLoans

navi:RemainingLoanLossesProvision
us-gaap:FinancingReceivablePortfolioSegment

navi:ReversalOfAllowanceRelatedToLoanSale
us-gaap:FinancingReceivablePortfolioSegment

navi:SaleOfPrivateEducationLoan

navi:ServicingRevenue
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

navi:SharesPaidForTaxWithholdingForShareBasedCompensationAverageCostPerShare

navi:UnallocatedSharedServicesExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1

us-gaap:CommonStockDividendsPerShareCashPaid
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeNetHedgeIneffectivenessGainLoss

us-gaap:DirectOperatingCosts
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:DividendsSharebasedCompensationStock
us-gaap:StatementEquityComponents

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings
us-gaap:DerivativeInstrumentRisk
us-gaap:IncomeStatementLocation

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements
us-gaap:DerivativeInstrumentRisk
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableChangeInPresentValueExpenseReversal
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown

us-gaap:GainLossOnDerivativeInstrumentsNetPretax
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation
us-gaap:IncomeStatementLocation

us-gaap:GainLossOnRepurchaseOfDebtInstrument
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:GainLossOnSalesOfLoansNet
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestAndDividendIncomeOperating
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario
us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:ValuationTechnique

us-gaap:LaborAndRelatedExpense

us-gaap:MinorityInterestPeriodIncreaseDecrease
us-gaap:StatementEquityComponents

us-gaap:NoninterestExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario

us-gaap:NoninterestIncome
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementScenario
us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:ValuationTechnique

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
us-gaap:IncomeStatementLocation
us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherNoninterestExpense

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsToAcquireLoansHeldForInvestment

us-gaap:ProceedsFromAccountsReceivableSecuritization

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities
us-gaap:FinancialInstrument
us-gaap:ProceedsFromRepaymentsOfCommercialPaper

us-gaap:ProceedsFromSaleOfLoansHeldForInvestment

us-gaap:ProvisionForLoanAndLeaseLosses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:ProvisionForLoanLossesExpensed
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:RepaymentsOfAccountsReceivableSecuritization

us-gaap:RepaymentsOfUnsecuredDebt

us-gaap:RestructuringCharges
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:TreasuryStockAcquiredAverageCostPerShare
us-gaap:StatementEquityComponents
us-gaap:TreasuryStockSharesAcquired
us-gaap:ShareRepurchaseProgram
us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:ShareRepurchaseProgram, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment
us-gaap:InvestmentType
navi:AscEightOneFiveFairValueAdjustments
us-gaap:InvestmentType, us-gaap:LongtermDebtType
us-gaap:IncomeTaxAuthority
navi:CapitalLossCarryForwards
us-gaap:IncomeTaxAuthority
navi:CapitalLossCarryforwardsValuationAllowance
us-gaap:StatementBusinessSegments
navi:CashAndInvestmentsIncludingRestrictedCashAndInvestments

navi:DecreaseInValuationDueToLiquidityAdjustments

navi:DeferredTaxAssetsEducationLoanPremiumsAndDiscountsNet

navi:DeferredTaxAssetsMarketValueAdjustments

navi:DeferredTaxAssetsOtherIncludingValuationAllowance

navi:DeferredTaxLiabilitiesOriginalIssueDiscountOnBorrowings

navi:DerivativeAssetAtFairValueIncludingAccruedInterest
us-gaap:DerivativeInstrumentRisk
navi:DerivativeAssetsLiabilitiesAtCarryingValueNet
us-gaap:IncomeTaxAuthority
navi:DisallowedInterestExpenseCarryForwards
us-gaap:IncomeTaxAuthority
navi:DisallowedInterestExpenseCarryforwardsValuationAllowance

navi:EarningAssets
us-gaap:FinancingReceivablePortfolioSegment
navi:EndingBalanceOfLoansInRepayment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FairValueByMeasurementBasis
navi:ExcessOfNetAssetFairValueOverCarryingValue

navi:ExpectedFutureRecoveriesOnChargedOffLoans
us-gaap:FinancingReceivablePortfolioSegment

navi:FinancingReceivableAllowanceForCreditLossesExcludingExpectedFutureRecoveriesOnChargedOffLoans
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConsolidatedEntities
navi:InterestReceivableAndPayableAndOtherAssets
us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
navi:LoansAndLeasesReceivableGrossCarryingAmountPercent
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable

navi:LoansReceivableAndInvestmentsFairValueDisclosure
us-gaap:FairValueByMeasurementBasis
us-gaap:InvestmentType
navi:LongTermDebtMaturities
us-gaap:InvestmentType, us-gaap:LongtermDebtType
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
navi:NotesReceivableGrossPercentageOfBalance
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment

navi:OnBalanceSheetSecuritizationTrustDebtIncludedInProjectedPrincipalPaydowns

navi:OperatingLossAndCreditCarryover
us-gaap:IncomeTaxAuthority
us-gaap:IncomeTaxAuthorityName
us-gaap:CounterpartyName
navi:PercentOfExposureToCounterpartiesWithCreditRatingsBelowSPAOrMoodyA3

navi:PercentageOfEducationLoanPortfolioInRepayment
us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
navi:PercentageOfInsuranceReimbursementReceivable
us-gaap:ClassOfFinancingReceivableTypeOfBorrower, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
navi:ReimbursementOnAllQualifyingDefaultClaimsPercentage

navi:SecuritiesFairValueOnBalanceSheetSecuritizationDerivatives
us-gaap:IncomeTaxAuthority
navi:TaxEffectedCapitalLossCarryforwards
us-gaap:IncomeTaxAuthority
navi:TaxEffectedDisallowedInterestExpenseCarryforwards

navi:TaxEffectedOperatingLossCarryforwards
us-gaap:IncomeTaxAuthority
us-gaap:IncomeTaxAuthorityName
us-gaap:DebtInstrument
navi:UnencumberedLoans

us-gaap:AccountsReceivableNet
us-gaap:AdjustmentsForNewAccountingPronouncements

us-gaap:AociTaxAttributableToParent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:ConsolidatedEntities
us-gaap:AssetsNet
us-gaap:DebtInstrument
us-gaap:DebtInstrumentCollateralAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrumentFaceAmount
us-gaap:LongtermDebtType, us-gaap:SecuritiesFinancingTransaction
us-gaap:SecuritiesFinancingTransaction, us-gaap:ShortTermDebtType

us-gaap:DebtLongtermAndShorttermCombinedAmount
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:FinancialInstrument
us-gaap:DebtInstrument, us-gaap:SecuritiesFinancingTransaction
us-gaap:SecuritiesFinancingTransaction

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredIncomeTaxesAndOtherTaxReceivableCurrent

us-gaap:DeferredTaxAssetsOperatingLossCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsProvisionForLoanLosses

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther
us-gaap:BalanceSheetLocation
us-gaap:DerivativeAssetFairValueGrossLiability

us-gaap:DerivativeAssetFairValueOfCollateral
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeAssetLiabilityNetMeasurementInput
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType, us-gaap:VariableRate

us-gaap:DerivativeAssets
us-gaap:BalanceSheetLocation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAssetsLiabilitiesAtFairValueNet
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:VariableRate
us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:DerivativeCollateralObligationToReturnCash
us-gaap:BalanceSheetLocation

us-gaap:DerivativeCollateralRightToReclaimCash
us-gaap:BalanceSheetLocation

us-gaap:DerivativeCreditRiskValuationAdjustmentDerivativeAssets

us-gaap:DerivativeFairValueAmountOffsetAgainstCollateralNet
us-gaap:CounterpartyName

us-gaap:DerivativeFairValueOfDerivativeAsset
us-gaap:BalanceSheetLocation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation
us-gaap:DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeLiability
us-gaap:BalanceSheetLocation
us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:FairValueByMeasurementFrequency
us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:FairValueByMeasurementFrequency
us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation
us-gaap:DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral

us-gaap:DerivativeFairValueOfDerivativeNet
us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation
us-gaap:HedgingDesignation
us-gaap:BalanceSheetLocation
us-gaap:DerivativeLiabilities
us-gaap:BalanceSheetLocation
us-gaap:DerivativeLiabilityFairValueGrossAsset

us-gaap:DerivativeLiabilityFairValueOfCollateral

us-gaap:DerivativeNetLiabilityPositionAggregateFairValue
us-gaap:CounterpartyName
us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:FairValueHedgeLiabilitiesAtFairValue

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs
us-gaap:DerivativeInstrumentRisk

us-gaap:FinancialLiabilitiesFairValueDisclosure
us-gaap:DebtInstrument, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivableBeforeAllowanceForCreditLossAndFee
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:InternalCreditAssessment, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePercentPastDue1
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentCurrent
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:InternalCreditAssessment, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentPastDue
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ForeignCurrencyContractsLiabilityFairValueDisclosure

us-gaap:ForeignCurrencyFairValueHedgeDerivativeAtFairValueNet
us-gaap:CounterpartyName
us-gaap:FinancialInstrument, us-gaap:HedgingDesignation
us-gaap:HedgedLiabilityFairValueHedgeCumulativeIncreaseDecrease

us-gaap:HeldToMaturitySecurities
us-gaap:LoanRestructuringModification
us-gaap:ImpairedFinancingReceivableUnpaidPrincipalBalance

us-gaap:InterestReceivable

us-gaap:InterestReceivableAndOtherAssets
us-gaap:StatementBusinessSegments

us-gaap:Investments

us-gaap:InvestmentsAndCash
us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:LiabilitiesFairValueDisclosure
us-gaap:FairValueByMeasurementFrequency
us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
us-gaap:FairValueByMeasurementBasis, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansReceivableFairValueDisclosure
us-gaap:FairValueByMeasurementBasis, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:LongTermDebtFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:InvestmentType
us-gaap:InvestmentType, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:InvestmentType
us-gaap:InvestmentType, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:InvestmentType
us-gaap:InvestmentType, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:InvestmentType
us-gaap:InvestmentType, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
us-gaap:InvestmentType
us-gaap:InvestmentType, us-gaap:LongtermDebtType

us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
us-gaap:InvestmentType
us-gaap:InvestmentType, us-gaap:LongtermDebtType

us-gaap:LongtermDebtWeightedAverageInterestRate
us-gaap:DebtInstrument, us-gaap:SecuritiesFinancingTransaction
us-gaap:SecuritiesFinancingTransaction
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:NotesReceivableGross
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:InternalCreditAssessment
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:NotesReceivableNet
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:ConcentrationRiskByBenchmark, us-gaap:ConcentrationRiskByType, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:FinancingReceivablePortfolioSegment
us-gaap:ConsolidatedEntities, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:StatementBusinessSegments
us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities
us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments
us-gaap:IncomeTaxAuthority
us-gaap:OperatingLossCarryforwards
us-gaap:IncomeTaxAuthorityName

us-gaap:OperatingLossCarryforwardsValuationAllowance
us-gaap:IncomeTaxAuthority

us-gaap:OtherAssetsMiscellaneous

us-gaap:OtherInvestments

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities
us-gaap:RestrictedCash
us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RestrictedInvestments

us-gaap:ShortTermBorrowings
us-gaap:ConsolidatedEntities
us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction
us-gaap:DebtInstrument, us-gaap:SecuritiesFinancingTransaction
us-gaap:SecuritiesFinancingTransaction

us-gaap:ShortTermDebtWeightedAverageInterestRate
us-gaap:DebtInstrument, us-gaap:SecuritiesFinancingTransaction
us-gaap:SecuritiesFinancingTransaction

us-gaap:ShorttermDebtFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1

us-gaap:StockholdersEquityBeforeTreasuryStock

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate

us-gaap:UnsecuredDebt

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Income Tax Expense Benefit
Balance Sheet
Finite Lived Intangible Assets Net
Assets
Property Plant And Equipment Net
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Finite Lived Intangible Assets Net
Liabilities
Other Liabilities
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Accumulated Other Comprehensive Income Loss Net Of Tax
Per Share
Common Stock Dividends Per Share Cash Paid
CashFlow
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Payments For Proceeds From Other Investing Activities
NetCashProvidedByUsedInFinancingActivities
Net Cash Provided By Used In Financing Activities
Shares
Weighted Average Number Of Shares Outstanding Basic
DividendsAndRepurchase
Dividends Common Stock Cash
FiniteLivedIntangibleAssets
Finite Lived Intangible Assets Net
BanksAndOrInsurance
Interest And Dividend Income Operating

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██4.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.0110.0109.0NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents navi:CommonStockSharesOutstandingNANA186.0NANANA215.0NANANA247.0NANANA263.0NANANA291.0NANANA348.0NANANA402.0NANANANANANANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding ▁█176.0185.0NA194.0195.0200.0NA228.0238.0247.0NA264.0269.0269.0NA274.0285.0296.0NA316.0328.0343.0NA375.0387.0405.0NA423.0430.0435.0NA445.0448.0458.0
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic ▁█174.0183.0NA193.0194.0200.0NA225.0235.0244.0NA260.0265.0264.0NA269.0280.0289.0NA310.0322.0339.0NA369.0381.0398.0NA415.0422.0427.0NA436.0440.0451.0
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount ▁█0.02.0NA4.05.07.0NA4.04.05.0NA6.010.06.0NA5.05.0NANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasic ▅█▅▅▄▁▅▄▄▄▃▄▃▄▂▄▄▃▄▄▄▄▅▄▄▄▄▅▄▄▄▄▆▅1.072.020.98000000000000021.080.65-0.530.790.640.650.520.280.440.310.48-0.320.650.40.310.490.740.390.530.80.640.480.730.650.870.720.50.610.581.220.76
us-gaap:EarningsPerShareDiluted ▅█▅▅▄▁▅▄▄▄▃▄▃▄▂▄▄▃▄▄▄▄▅▄▄▄▄▅▄▄▄▄▆▅1.052.00.97000000000000021.070.64-0.530.780.630.640.520.280.430.310.47-0.320.640.390.30.480.730.380.530.790.630.470.720.640.850.710.490.60.571.20.74
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
 EBT Margin us-gaap:ConsolidationItems us-gaap:OperatingSegmentsNANANA744.0820.0998.01081.01181.01220.01250.01283.01256.01242.01181.01158.01137.01066.01009.01018.01025.0998.0972.0956.0973.0960.0994.0NANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,navi:ConsumerLendingNANANA350.0362.0406.0417.0441.0441.0448.0456.0459.0445.0433.0432.0446.0387.0375.0NANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,navi:FederalEducationLoansSegmentNANANA393.0457.0588.0658.0732.0772.0796.0815.0787.0788.0742.0723.0689.0677.0633.0NANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementScenario navi:EliminationsAndReconcilingItems,navi:AdditionsSubtractionsForCoreToGaapAccountingNANANA-14.0-14.0-14.0-17.0-17.0-17.0-17.0-17.0-18.0-18.0-17.0-14.0-13.0-14.0-14.0-15.0-14.0-26.0NANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementScenario navi:EliminationsAndReconcilingItems,navi:AdjustmentsForCoreToGaapAccountingNANANA17.0-1.0-11.0-13.0-15.0-16.0-16.0-14.0-15.0-15.0-9.01.03.04.06.010.014.030.0NANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:ComprehensiveIncomeNetOfTax ▆█▆▆▅▁▆▅▄▅▄▅▅▆▄▆▅▅▇▇▅▅▇▆▆202.0418.0205.0230.0108.0-315.0205.0101.030.058.0-42.0138.0113.0225.0-39.0185.097.0104.0278.0275.086.0100.0304.0181.0192.0NANANANANANANANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▅▇▅▅▄▁▅▄▄▄▃▅▄▅▃▅▄▄▆▆▄▄▆▅▅▆▆▆▆▅▆▆█▆202.0418.0205.0230.0108.0-315.0205.0101.030.058.0-42.0138.0113.0225.0-39.0185.097.0104.0278.0275.086.0100.0317.0181.0192.0247.0265.0360.0307.0213.0274.0259.0555.0348.0
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▅▇▅▅▄▁▅▄▄▄▃▄▃▄▄▅▄▄▅▆▄▅▇▆▅▇▇█▇▆240.0484.0234.0259.0170.0-131.0219.0185.0194.0164.0107.0147.0113.0162.0182.0269.0172.0141.0242.0377.0206.0284.0452.0380.0295.0473.0421.0561.0498.0355.0NANANANA
us-gaap:IncomeTaxExpenseBenefit ▃▄▃▃▃▁▃▂▂▂▂▂▂▂▇▄▃▃▄▅▃▄▅▅▄▅▅▆▆▄▄▄█▆55.0114.049.052.045.0-25.049.040.041.036.034.033.030.036.0266.093.060.053.096.0147.081.0103.0166.0144.0113.0181.0159.0200.0191.0136.0129.0136.0299.0211.0
us-gaap:IncomeTaxesPaidNet ▃▁▂▂▁▁▂▂▁▁▁▂▂▁▂▁▃▁▃▃▃▂▂▁▃▁▅▅▅▂▄▇█▁95.01.049.022.01.02.032.039.018.04.02.031.022.02.050.04.094.09.085.077.067.020.021.00.066.01.0145.0147.0154.038.0116.0238.0267.015.0
us-gaap:InterestExpense ▁▁▂▂▃▅▆▇▇████▇▆▆▅▅▅▄▄▄▃▃▃▃▃▃▃▃▃▃▃▄339.0329.0388.0425.0519.0714.0774.0854.0911.0949.0961.0935.0929.0843.0793.0785.0719.0675.0650.0627.0599.0565.0521.0524.0515.0514.0513.0508.0513.0530.0544.0541.0553.0571.0
us-gaap:InterestIncomeExpenseNet ▂▂▂▂▁▁▁▂▁▁▁▁▁▂▂▂▂▂▂▃▃▄▄▅▅▅▆▆▆█████322.0363.0343.0336.0300.0273.0294.0312.0293.0285.0307.0306.0298.0329.0366.0355.0351.0340.0378.0412.0429.0486.0536.0553.0549.0583.0614.0624.0662.0766.0789.0799.0784.0795.0
us-gaap:InterestIncomeOperating NANANA761.0819.0987.01068.01166.01204.01234.01269.01241.01227.01172.01159.01140.01070.01015.01028.01039.01028.01051.01057.01077.01064.01097.01127.01132.01175.01296.0NANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems us-gaap:OperatingSegmentsNANANA744.0820.0998.01081.01181.01220.01250.01283.01256.01242.01181.01158.01137.01066.01009.01018.01025.0998.0972.0956.0973.0960.0994.0NANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:FinancingReceivablePortfolioSegment us-gaap:OperatingSegments,navi:EducationLoan▁▁▂▂▃▅▆▇▇████▇▇▇▆▅▅▅▅▅646.0678.0711.0743.0818.0986.01063.01158.01194.01222.01250.01229.01217.01163.01143.01123.01050.0997.01009.01018.0990.0966.0NANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:FinancingReceivablePortfolioSegment,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,navi:EducationLoan,navi:ConsumerLending▁▂▂▃▄▆▆▇▇▇██▇▇▇█▅▄295.0319.0328.0350.0362.0404.0414.0437.0436.0443.0451.0455.0442.0431.0430.0445.0386.0374.0NANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:FinancingReceivablePortfolioSegment,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,navi:EducationLoan,navi:FederalEducationLoansSegment▁▁▂▂▃▅▆▇▇████▇▇▆▆▅351.0359.0383.0393.0456.0582.0649.0721.0758.0779.0799.0774.0775.0732.0713.0678.0664.0623.0NANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,navi:ConsumerLendingNANANA350.0362.0406.0417.0441.0441.0448.0456.0459.0445.0433.0432.0446.0387.0375.0NANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,navi:FederalEducationLoansSegmentNANANA393.0457.0588.0658.0732.0772.0796.0815.0787.0788.0742.0723.0689.0677.0633.0NANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,us-gaap:AllOtherSegmentsNANANA1.01.04.06.08.07.06.012.010.09.06.04.04.08.07.05.03.03.02.03.01.03.03.03.03.03.04.0NANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementScenario navi:EliminationsAndReconcilingItems,navi:AdditionsSubtractionsForCoreToGaapAccountingNANANA-14.0-14.0-14.0-17.0-17.0-17.0-17.0-17.0-18.0-18.0-17.0-14.0-13.0-14.0-14.0-15.0-14.0-26.0NANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementScenario navi:EliminationsAndReconcilingItems,navi:AdjustmentsForCoreToGaapAccountingNANANA17.0-1.0-11.0-13.0-15.0-16.0-16.0-14.0-15.0-15.0-9.01.03.04.06.010.014.030.0NANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementScenario navi:EliminationsAndReconcilingItems,navi:ReclassificationsForCoreToGaapAccountingNANANA31.013.03.04.02.01.01.03.03.03.08.015.016.018.020.025.028.056.0NANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementScenario,us-gaap:FinancingReceivablePortfolioSegment navi:EliminationsAndReconcilingItems,navi:AdjustmentsForCoreToGaapAccounting,navi:EducationLoan▇▇██▄▂▂▁▁▁▁▁14.014.019.017.0-1.0-11.0-13.0-15.0-16.0-16.0-14.0-15.0NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems,us-gaap:StatementScenario,us-gaap:FinancingReceivablePortfolioSegment navi:EliminationsAndReconcilingItems,navi:ReclassificationsForCoreToGaapAccounting,navi:EducationLoan▆▆██▄▁▂▁▁▁▁▁24.023.032.031.013.03.04.02.01.01.03.03.0NANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:FinancingReceivablePortfolioSegment navi:EducationLoan▁▁▂▂▃▅▆▇▇████▇▇▇▆▅▅▆▅▆660.0692.0730.0760.0817.0975.01050.01143.01178.01206.01236.01214.01202.01154.01144.01126.01054.01003.01019.01032.01020.01045.0NANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:FinancingReceivablePortfolioSegment navi:PrivateEducationLoans▁▂▂▃▄▆▆▇▇▇██▇▇▇█▅▄▄▆▆▆295.0319.0328.0350.0362.0404.0414.0437.0436.0443.0451.0455.0442.0431.0430.0445.0386.0374.0374.0401.0402.0411.0NANANANANANANANANANANANA
 us-gaap:InterestIncomeOperating us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans▁▁▂▂▂▄▆▇▇████▇▇▆▆▅▆▅▅▅365.0373.0402.0410.0455.0571.0636.0706.0742.0763.0785.0759.0760.0723.0714.0681.0668.0629.0645.0631.0618.0634.0NANANANANANANANANANANANA
us-gaap:InterestPaidNet ▁▁▁▂▃▅▆▇█▇█▇▇▆▆▆▅▅▄▄▄▃▃▃▃▃▃▂▂▃▃▃▃▃361.0362.0395.0450.0502.0712.0768.0866.0942.0903.0945.0897.0820.0798.0751.0742.0709.0670.0618.0595.0573.0515.0492.0498.0491.0500.0494.0484.0486.0519.0517.0525.0553.0568.0
us-gaap:NetIncomeLoss ▄▆▄▄▃▁▄▄▄▄▃▃▃▄▁▄▃▃▄▅▃▄▅▅▄▅▅▆▅▅▅▅█▆185.0370.0185.0207.0125.0-106.0171.0145.0153.0128.072.0114.083.0126.0-84.0176.0112.088.0145.0230.0125.0181.0286.0237.0182.0292.0263.0359.0307.0219.0270.0260.0543.0346.0
us-gaap:OperatingExpenses ▃▄▄▃▂▃▃▃▃▃▃▃▁▄▄▃▂▃▃▂▂▃▃▂▂▂▂▁▂█▆▄▃▃252.0259.0269.0232.0213.0251.0235.0251.0241.0256.0252.0255.0201.0275.0260.0238.0230.0238.0246.0228.0230.0247.0235.0228.0225.0230.0215.0195.0211.0366.0305.0257.0244.0235.0
us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax ▇█▇▇▆▁█▅▃▅17.048.020.023.0-17.0-209.033.0-44.0-123.0-70.0NANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▆▆▆▆▅▁▆▄▃▄▃▆▆▇▆▅▅▆█▆▄▄▆▄▅▄▅▅▅▅▅▅▆▅17.048.020.023.0-17.0-209.033.0-44.0-123.0-70.0-114.024.030.099.045.09.0-15.016.0132.045.0-39.0-81.031.0-56.010.0-45.01.01.00.0-6.05.0-1.013.02.0
us-gaap:ProfitLoss ▄▆▄▄▃▁▄▄▄▄▃▃▃▄▁▄▃▃▄▅▃▄▅▅▄▅▅▆▅▅▅▅█▆185.0370.0185.0207.0125.0-106.0172.0145.0153.0128.072.0114.083.0126.0-84.0176.0112.088.0145.0230.0125.0181.0286.0237.0182.0292.0263.0359.0307.0219.0270.0260.0542.0346.0
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax █▇▄▄▁▂▂▃▃▃▃▁▁▂134.0130.0107.0108.085.088.094.099.0100.098.096.086.084.093.0NANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:Assets ▁▁▁▂▂▂▂▂▂▃▃▃▃▄▄▄▄▄▄▅▅▅▆▆▆▇▇▆▆██83348.084957.087412.089664.091045.093245.094903.096553.098320.0100579.0104176.0106493.0108949.0113209.0114991.0117085.0120354.0117890.0121136.0125312.0128372.0131377.0134112.0137666.0140220.0143872.0146352.0140345.0142976.0156472.0159543.0NANANA
us-gaap:Liabilities ▁▁▁▂▂▂▂▂▂▃▃▃▃▄▄▄▄▄▅▅▅▅▆▆▆▇▇▆▇██80636.082220.084965.087399.088919.091197.091554.093301.095008.097136.0100629.0102738.0105204.0109541.0111506.0113535.0116790.0114218.0117413.0121578.0124669.0127538.0130113.0133779.0136287.0139781.0142154.0136189.0138955.0150874.0153901.0NANANA
us-gaap:LiabilitiesAndStockholdersEquity ▁▁▁▂▂▂▂▂▂▃▃▃▃▄▄▄▄▄▄▅▅▅▆▆▆▇▇▆▆██83348.084957.087412.089664.091045.093245.094903.096553.098320.0100579.0104176.0106493.0108949.0113209.0114991.0117085.0120354.0117890.0121136.0125312.0128372.0131377.0134112.0137666.0140220.0143872.0146352.0140345.0142976.0156472.0159543.0NANANA
us-gaap:StockholdersEquity ▂▂▂▁▁▁▄▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅██2701.02723.02433.02254.02115.02035.03336.03240.03301.03430.03519.03724.03714.03637.03454.03526.03540.03648.03699.03710.03679.03815.03975.03883.03929.04087.04198.04156.04021.05593.05637.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:CashAndCashEquivalentsAtCarryingValue ▂▂▁▂▂▁▁▂▂▁▁▃▂▃▂▁▁▁▁▂▁▁▂▁▂▃▂▂▂▆█▇▅▅1453.01497.01183.01775.01632.01084.01233.01583.01746.01206.01286.02143.01622.02398.01518.01248.01153.01364.01253.01823.01377.01168.01594.01305.01614.02051.01443.01942.01636.03742.05190.04329.03327.03685.0
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▂▃▁▃▂▂▂▃▄▃▆▆▆█▄▄▄▅▅3762.04102.03537.04214.03989.03768.03781.04260.04426.04220.05262.05248.05008.05797.04646.04513.04616.04952.04712.0NANANA5186.0NANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:PropertyPlantAndEquipmentNet ▁▁▁▃▃▄▄▄▄▄▄▅▆▇▇▇▇██113.0113.0116.0127.0129.0132.0135.0134.0136.0136.0136.0138.0144.0150.0156.0152.0152.0157.0160.0NANANA162.0NANANANANANANANANANANA
us-gaap:Goodwill NANA665.0NANANA665.0NANANA665.0NANANA701.0NANANA545.0NANANA551.0NANANA353.0NANANA394.0NANANA
us-gaap:FiniteLivedIntangibleAssetsNet NANA70.0NANANA92.0NANANA121.0NANANA108.0NANANA124.0NANANA154.0NANANA16.0NANANA30.0NANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass navi:SoftwareTechnologyNANA13.0NANANA18.0NANANA25.0NANANA19.0NANANA19.0NANANA13.0NANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationshipsNANA32.0NANANA42.0NANANA58.0NANANA58.0NANANA73.0NANANANANANANANANANANANANANANA
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TrademarksAndTradeNamesNANA25.0NANANA32.0NANANA37.0NANANA30.0NANANA31.0NANANA36.0NANANA9.0NANANA13.0NANANA
us-gaap:IntangibleAssetsNetIncludingGoodwill ▇▇▇▇▇▇▇▇▇██████▇▆▆▆▆▆▆▆▄▄▄▁▁▁▂▂726.0731.0735.0741.0746.0752.0757.0763.0769.0780.0786.0792.0798.0802.0810.0727.0658.0664.0670.0683.0696.0702.0705.0544.0546.0549.0369.0371.0373.0421.0424.0NANANA
us-gaap:DeferredTaxAssetsLiabilitiesNet NANA540.0NANANA307.0NANANA322.0NANANA392.0NANANA802.0NANANA933.0NANANA1348.0NANANA1319.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:LongTermDebt ▁▁▁▁▂▂▂▂▂▂▃▃▄▄▄▅▅▅▅▆▆▆▇▇▇▇█▇▇██75814.075674.077332.079137.080260.081297.081715.084769.086776.088140.093519.096089.098690.0102797.0105012.0108557.0110778.0109586.0112368.0116540.0119637.0122920.0124833.0128293.0130387.0132330.0136866.0127669.0131919.0136177.0136648.0NANANA
us-gaap:MinorityInterest ▁▂▂▁▁▂▂▁▁▂▇████▆▆▆▆▆▆▆▆11.014.014.011.011.013.013.012.011.013.028.031.031.031.031.024.024.024.024.024.024.024.024.0NANANANANANA5.05.0NANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:StockholdersEquity ▂▂▂▁▁▁▄▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅██2701.02723.02433.02254.02115.02035.03336.03240.03301.03430.03519.03724.03714.03637.03454.03526.03540.03648.03699.03710.03679.03815.03975.03883.03929.04087.04198.04156.04021.05593.05637.0NANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ▂▂▂▁▁▁▄▃▃▄▄▄▄▄▄▄▄▄▄▄▄▄▅▅▅▅▅▅▅████▇2712.02737.02447.02265.02126.02048.03349.03252.03312.03443.03547.03755.03745.03668.03485.03550.03564.03672.03723.03734.03703.03839.03999.03887.03933.04091.04198.04156.04021.05598.05642.05632.05434.05154.0
us-gaap:CommonStockValue ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██4.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.0110.0109.0NANANA
us-gaap:AdditionalPaidInCapitalCommonStock ██▇▇▇▇▇▇▆▆▆▆▅▅▄▄▄▄▃▃▃▃▂▂▂▂▁3268.03255.03226.03220.03215.03212.03198.03188.03181.03174.03145.03142.03134.03127.03077.03067.03056.03047.03022.03006.02985.02975.02967.02964.02954.02935.02893.0NANANANANANANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▆▆▆█▇▇▇▆▆▆▆▆▆▆▆▅▅▅▅▄▄▃▃▂▂▁▅▅3828.03670.03331.03175.02999.02905.03664.03527.03418.03303.03218.03186.03114.03073.03004.03130.02997.02930.02890.02858.02677.02604.02480.02251.02072.01951.01724.01521.01224.02733.02584.0NANANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▂▂▂▁▁▁▄▃▄▆▇██▇▆▅▅▅▅▃▃▃▄▄▅▅▅▅▅▅▅-209.0-226.0-274.0-294.0-317.0-300.0-91.0-124.0-80.043.0113.0227.0203.0173.061.016.07.022.06.0-126.0-171.0-132.0-51.0-82.0-26.0-36.09.08.07.07.013.0NANANA
us-gaap:TreasuryStockValue ██▇▇▇▇▇▇▆▆▆▆▆▆▅▅▅▅▅▄▄▄▃▃▃▂▂▁▁▅▄4190.03980.03854.03851.03786.03786.03439.03355.03222.03094.02961.02835.02741.02740.02692.02691.02524.02355.02223.02032.01816.01636.01425.01254.01075.0767.0432.0257.082.02283.02033.0NANANA
us-gaap:MinorityInterest ▁▂▂▁▁▂▂▁▁▂▇████▆▆▆▆▆▆▆▆11.014.014.011.011.013.013.012.011.013.028.031.031.031.031.024.024.024.024.024.024.024.024.0NANANANANANA5.05.0NANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues ▂▄▁▁▁▂▂▂▁▃▁▂▁▆▁▂▁▃▂▃▂▂▁▂▂▄▂▂▃▆▃▂█▆10.019.03.01.01.05.05.04.02.017.00.04.01.037.01.04.03.011.010.017.04.04.01.06.05.021.06.05.013.034.013.08.051.034.0
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue ▁▄▁▂▁▄▂▁▂▅▁▂▃▆▄▃▃▆▂▂▂▅▁▂▅▅▃▂▄█▄▃▄█3.010.03.05.02.09.05.03.05.012.03.04.06.013.09.07.06.014.04.04.05.012.02.04.011.012.06.05.010.018.010.08.010.019.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▃▃▃▂▆▃▅▅▃▇▃▃▄▄▄▄▅▄▅▆▅▆▆█▇▁▇███▇▆▇154.0179.0171.0221.0142.0453.0188.0309.0334.0188.0485.0173.0198.0284.0244.0284.0280.0350.0243.0343.0429.0342.0451.0404.0556.0499.049.0502.0555.0558.0568.0478.0425.0529.0
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█▇▇▇▆▆▇▇▇▇▇██▇█▅████▇█▇▇█▁▇▇▆1334.02885.01530.01526.02407.0985.01079.01525.02473.02408.02161.02443.03035.02721.02300.02943.0-1136.03011.02913.03111.03202.02185.03337.02049.02560.02740.0-6536.01655.02236.0992.0NANA3421.02184.0
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▅▅█▆█▇▇▅▂▅▅▁▇▅▃-1828.0-2499.0-2378.0-1522.0-2328.0-1451.0-1746.0-2000.0-2601.0-3638.0-2632.0-2376.0-4022.0-1854.0-2411.0-3330.0NANANANANANANANANANANANA-4897.0-2998.0NANA-4204.0-2928.0
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▃▆▂▅▅▄▃▄▅▁▄▅▂█▅▄▃▅-340.0565.0-677.0225.0221.0-13.0-479.0-166.0206.0-1042.014.0240.0-789.01151.0133.0-103.0-336.0240.0NANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▂▃▃▃▂▆▃▅▅▃▇▃▃▄▄▄▄▅▄▅▆▅▆▆█▇▁▇███▇▆▇154.0179.0171.0221.0142.0453.0188.0309.0334.0188.0485.0173.0198.0284.0244.0284.0280.0350.0243.0343.0429.0342.0451.0404.0556.0499.049.0502.0555.0558.0568.0478.0425.0529.0
us-gaap:NetIncomeLoss ▄▆▄▄▃▁▄▄▄▄▃▃▃▄▁▄▃▃▄▅▃▄▅▅▄▅▅▆▅▅▅▅█▆185.0370.0185.0207.0125.0-106.0171.0145.0153.0128.072.0114.083.0126.0-84.0176.0112.088.0145.0230.0125.0181.0286.0237.0182.0292.0263.0359.0307.0219.0270.0260.0543.0346.0
us-gaap:ProfitLoss ▄▆▄▄▃▁▄▄▄▄▃▃▃▄▁▄▃▃▄▅▃▄▅▅▄▅▅▆▅▅▅▅█▆185.0370.0185.0207.0125.0-106.0172.0145.0153.0128.072.0114.083.0126.0-84.0176.0112.088.0145.0230.0125.0181.0286.0237.0182.0292.0263.0359.0307.0219.0270.0260.0542.0346.0
us-gaap:ShareBasedCompensation ▁▄▁▂▁▄▂▁▂▅▁▂▂▆▄▃▂▆▂▂▃▅▁▂▅▅▃▂▄█▄▃▄█3.010.03.04.02.09.05.03.05.012.03.04.05.013.09.07.05.014.04.04.06.012.02.04.011.012.06.05.010.018.010.08.010.019.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█▇▇▇▆▆▇▇▇▇▇██▇█▅████▇█▇▇█▁▇▇▆1334.02885.01530.01526.02407.0985.01079.01525.02473.02408.02161.02443.03035.02721.02300.02943.0-1136.03011.02913.03111.03202.02185.03337.02049.02560.02740.0-6536.01655.02236.0992.0NANA3421.02184.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▇▅▅█▆█▇▇▅▂▅▅▁▇▅▃-1828.0-2499.0-2378.0-1522.0-2328.0-1451.0-1746.0-2000.0-2601.0-3638.0-2632.0-2376.0-4022.0-1854.0-2411.0-3330.0NANANANANANANANANANANANA-4897.0-2998.0NANA-4204.0-2928.0
us-gaap:RepaymentsOfLongTermDebt NANANA3.01.0718.01013.00.0907.030.01417.087.01276.0167.097.0549.0251.0567.0NANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ▁▁▂▂▂▂▂▃▃▃▃▃▄▄▄▄▄▄▄▅▅▆▆▆▇▇▇▇▇▇▇▇██27.029.030.031.031.031.035.036.037.039.040.041.043.042.043.042.045.046.047.049.051.054.058.058.061.063.060.062.063.064.065.065.066.068.0
us-gaap:PaymentsForRepurchaseOfCommonStock ▅▃▁▂▁█▃▄▄▃▄200.0100.00.065.00.0335.077.0130.0126.0107.0125.0NANANA0.0165.0165.0110.0180.0200.0175.0200.0170.0175.0300.0300.0168.0167.065.0200.0200.00.0201.0199.0
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.0110109
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.1

Common Stock Shares Issued

us-gaap:CommonStockSharesIssued us-gaap:StatementEquityComponents

us-gaap:CommonStockSharesIssued

navi:CommonStockSharesOutstanding


Common
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-31
Value186215247263291348402
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value176185194195200228238247264269269274285296316328343375387405423430435445448458
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value174183193194200225235244260265264269280289310322339369381398415422427436440451
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount


Antidilutive
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.02.04.05.07.04.04.05.06.010.06.05.05.0
Percentage of AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount0.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.072.020.981.080.65-0.530.790.640.650.520.280.440.310.48-0.320.650.40.310.490.740.390.530.80.640.480.730.650.870.720.50.610.581.220.76
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.052.00.971.070.64-0.530.780.630.640.520.280.430.310.47-0.320.640.390.30.480.730.380.530.790.630.470.720.640.850.710.490.60.571.20.74
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-30
Value202418205230108-315.02051013058-42.0138113225-39.01859710427827586100304181192
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating30.660.428.030.213.2-31.919.28.72.54.7-3.311.19.219.2-3.416.29.110.227.026.58.49.528.816.818.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value202418205230108-315.02051013058-42.0138113225-39.01859710427827586100317181192247265360307213274259555348
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating30.660.428.030.213.2-31.919.28.72.54.7-3.311.19.219.2-3.416.29.110.227.026.58.49.530.016.818.022.523.531.826.116.420.619.341.525.5

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:Parent


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value202418205230108-315.02051013058-42.0138113225-39.01859710427827586100317181192247265360307213274259556348
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.2100.0
Percentage of InterestAndDividendIncomeOperating30.660.428.030.213.2-31.919.28.72.54.7-3.311.19.219.2-3.416.29.110.227.026.58.49.530.016.818.022.523.531.826.116.420.619.341.625.5
Percentage of InterestAndDividendIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value240484234259170-131.0219185194164107147113162182269172141242377206284452380295473421561498355
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating36.369.932.034.020.8-13.320.515.916.113.38.411.89.213.815.723.616.113.923.536.320.027.042.835.327.743.137.449.642.427.4

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value215398212251234121199184228177174182170140141239193170205250244234271275244311
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest89.682.290.696.9137.6-92.490.999.5117.5107.9162.6123.8150.486.477.588.8112.2120.684.766.3118.482.460.072.482.765.8
Percentage of InterestAndDividendIncomeOperating32.557.529.033.028.612.318.615.818.914.313.714.713.911.912.221.018.016.719.924.123.722.325.625.522.928.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments33.258.70.033.728.512.10.015.618.714.20.014.513.711.90.021.018.116.80.024.424.424.10.028.325.431.3

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

us-gaap:OperatingSegments, navi:BusinessProcessing


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value383419217.03.09.0129.0139.05.011144.06.09.05.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest15.87.08.18.14.1-2.34.16.54.67.98.43.49.78.62.22.25.23.5
Percentage of InterestAndDividendIncomeOperating5.74.92.62.80.90.30.81.00.71.10.70.40.91.20.30.50.80.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, navi:ConsumerLending


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value12530513614311470116102111848092856570946362
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest52.163.058.155.267.1-53.453.055.157.251.274.862.675.240.138.534.936.644.0
Percentage of InterestAndDividendIncomeOperating18.944.118.618.813.97.110.98.79.26.86.37.46.95.56.08.25.96.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending42.495.60.040.931.517.20.023.125.218.80.020.019.115.00.021.116.316.5

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value147147172180192156178167170166175193192183218249218204
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest61.230.473.569.5112.9-119.181.390.387.6101.2163.6131.3169.9113.0119.892.6126.7144.7
Percentage of InterestAndDividendIncomeOperating22.221.223.523.723.415.816.714.314.113.513.815.615.615.618.821.820.420.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment41.940.90.045.842.026.50.022.822.020.90.024.524.424.70.036.132.232.2

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-95.0-88.0-115.0-93.0-79.0-108.0-104.0-97.0-62.0-86.0-90.0-108.0-118.0-122.0-135.0-94.0-84.0-90.0-79.0-82.0-84.0-88.0-62.0-84.0-80.0-87.0-85.0-69.0-73.0-179.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-39.6-18.2-49.1-35.9-46.582.4-47.5-52.4-32.0-52.4-84.1-73.5-104.4-75.3-74.2-34.9-48.8-63.8-32.6-21.8-40.8-31.0-13.7-22.1-27.1-18.4-20.2-12.3-14.7-50.4
Percentage of InterestAndDividendIncomeOperating-14.4-12.7-15.7-12.2-9.6-10.9-9.7-8.3-5.1-7.0-7.1-8.7-9.6-10.4-11.6-8.2-7.9-8.9-7.7-7.9-8.2-8.4-5.9-7.8-7.5-7.9-7.5-6.1-6.2-13.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments-9500.00.00.0-9300.0-7900.0-2700.00.0-1212.5-885.7-1433.30.0-1080.0-1311.1-2033.30.0-2350.0-1050.0-1285.70.0-2733.3-2800.0-4400.00.0-8400.0-2666.7-2900.00.0-2300.0-2433.3-4475.0

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2586228.0-64.0-252.0201.0-34.0-13.0-67.0-35.0-57.0224130-21.0-29.037127-38.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest10.417.89.43.1-37.6192.49.10.5-17.5-7.9-62.6-23.8-50.413.622.511.2-12.2-20.615.333.7-18.4
Percentage of InterestAndDividendIncomeOperating3.812.43.01.1-7.8-25.51.90.1-2.8-1.1-5.3-2.8-4.61.93.52.6-2.0-2.93.612.2-3.7
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting-250.0-955.60.0-57.1457.11800.00.0-5.9200.076.50.0194.4316.7-129.40.0-230.8150.0207.10.0-907.1146.2

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value2586228.0-64.0-252.0201.0-34.0-13.0-67.0-35.0-57.0224130-21.0-29.037127-38.0
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest10.417.89.43.1-37.6192.49.10.5-17.5-7.9-62.6-23.8-50.413.622.511.2-12.2-20.615.333.7-18.4
Percentage of InterestAndDividendIncomeOperating3.812.43.01.1-7.8-25.51.90.1-2.8-1.1-5.3-2.8-4.61.93.52.6-2.0-2.93.612.2-3.7
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting178.6614.30.047.16400.02290.90.0-6.7212.581.20.0233.3380.0-244.40.01000.0-525.0-483.30.0907.1-126.7

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value55114495245-25.049404136343330362669360539614781103166144113181159200191136129136299211
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating8.316.56.76.85.5-2.54.63.43.42.92.72.72.43.123.08.25.65.29.314.17.99.815.713.410.616.514.117.716.310.59.710.122.415.4

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value50934559552846425341344239332728770637693908710010290117
Percentage of IncomeTaxExpenseBenefit90.981.691.8113.5122.2-112.093.9105.0129.3113.9100.0127.3130.091.7102.393.5116.7118.979.263.3111.184.560.270.879.664.6
Percentage of InterestAndDividendIncomeOperating7.613.46.27.86.72.84.33.64.43.32.73.43.22.823.57.66.56.27.49.08.88.39.59.58.510.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments7.713.70.07.96.72.80.03.64.33.30.03.33.12.80.07.76.66.20.09.19.09.00.010.59.411.8

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

us-gaap:OperatingSegments, navi:BusinessProcessing


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value9.08.04.05.01.01.02.03.02.03.01.01.03.04.01.02.03.02.0
Percentage of IncomeTaxExpenseBenefit16.47.08.29.62.2-4.04.17.54.98.32.93.010.011.10.42.25.03.8
Percentage of InterestAndDividendIncomeOperating1.41.20.50.70.10.10.20.30.20.20.10.10.20.30.10.20.30.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, navi:ConsumerLending


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value297129332716282326191520191524342324
Percentage of IncomeTaxExpenseBenefit52.762.359.263.560.0-64.057.157.563.452.844.160.663.341.79.036.638.345.3
Percentage of InterestAndDividendIncomeOperating4.410.34.04.33.31.62.62.02.21.51.21.61.51.32.13.02.12.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending9.822.30.09.47.53.90.05.25.94.20.04.44.33.50.07.65.96.4

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value343536434637403939393445444277928075
Percentage of IncomeTaxExpenseBenefit61.830.773.582.7102.2-148.081.697.595.1108.3100.0136.4146.7116.728.998.9133.3141.5
Percentage of InterestAndDividendIncomeOperating5.15.14.95.75.63.73.73.33.23.22.73.63.63.66.68.17.57.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment9.79.70.010.910.16.30.05.35.14.90.05.75.65.70.013.411.811.8

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-22.0-21.0-24.0-22.0-19.0-26.0-24.0-23.0-14.0-20.0-16.0-24.0-27.0-28.0176-35.0-30.0-34.0-28.0-29.0-32.0-33.0-23.0-31.0-29.0-33.0-30.0-25.0-26.0-83.0-47.0-19.0-13.0-20.0
Percentage of IncomeTaxExpenseBenefit-40.0-18.4-49.0-42.3-42.2104.0-49.0-57.5-34.1-55.6-47.1-72.7-90.0-77.866.2-37.6-50.0-64.2-29.2-19.7-39.5-32.0-13.9-21.5-25.7-18.2-18.9-12.5-13.6-61.0-36.4-14.0-4.3-9.5
Percentage of InterestAndDividendIncomeOperating-3.3-3.0-3.3-2.9-2.3-2.6-2.2-2.0-1.2-1.6-1.3-1.9-2.2-2.415.2-3.1-2.8-3.3-2.7-2.8-3.1-3.1-2.2-2.9-2.7-3.0-2.7-2.2-2.2-6.4-3.5-1.4-1.0-1.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments-2200.00.00.0-2200.0-1900.0-650.00.0-287.5-200.0-333.30.0-240.0-300.0-466.70.0-875.0-375.0-485.70.0-966.7-1066.7-1650.00.0-3100.0-966.7-1100.00.0-833.3-866.7-2075.00.0-633.3-325.0-400.0

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value5.0214.0-7.0-10.0-53.01.0-2.0-12.0-5.01.0-9.0-9.03.0-6.06.0-10.0-10.02054-9.0
Percentage of IncomeTaxExpenseBenefit9.118.48.2-13.5-22.2212.02.0-5.0-29.3-13.92.9-27.3-30.08.3-2.36.5-16.7-18.920.836.7-11.1
Percentage of InterestAndDividendIncomeOperating0.83.00.5-0.9-1.2-5.40.1-0.2-1.0-0.40.1-0.7-0.70.3-0.50.5-0.9-1.01.95.2-0.9
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting-50.0-233.30.050.071.4378.60.011.870.629.40.050.050.0-17.60.0-46.271.471.40.0-385.734.6

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value5.0214.0-7.0-10.0-53.01.0-2.0-12.0-5.01.0-9.0-9.03.0-6.06.0-10.0-10.02054-9.0
Percentage of IncomeTaxExpenseBenefit9.118.48.2-13.5-22.2212.02.0-5.0-29.3-13.92.9-27.3-30.08.3-2.36.5-16.7-18.920.836.7-11.1
Percentage of InterestAndDividendIncomeOperating0.83.00.5-0.9-1.2-5.40.1-0.2-1.0-0.40.1-0.7-0.70.3-0.50.5-0.9-1.01.95.2-0.9
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting35.7150.00.0-41.21000.0481.80.013.375.031.20.060.060.0-33.30.0200.0-250.0-166.70.0385.7-30.0

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value951.049221.02.03239184.02.031222.0504.0949.085776720210.0661.01451471543811623826715
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating14.40.16.72.90.10.23.03.31.50.30.22.51.80.24.30.48.80.98.37.46.51.92.00.06.20.112.913.013.12.98.717.820.01.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value339329388425519714774854911949961935929843793785719675650627599565521524515514513508513530544541553571
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating51.347.553.155.863.472.372.573.275.776.975.775.375.771.968.468.967.266.563.260.358.353.849.348.748.446.945.544.943.740.940.840.441.441.8

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value365383398423491701771872924950970929923851801792723675644620590556511513508505
Percentage of InterestExpense107.7116.4102.699.594.698.299.6102.1101.4100.1100.999.499.4100.9101.0100.9100.6100.099.198.998.598.498.197.998.698.2
Percentage of InterestAndDividendIncomeOperating55.255.354.455.660.071.072.274.876.777.076.474.975.272.669.169.567.666.562.659.757.452.948.347.647.746.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments56.456.50.056.959.970.20.073.875.776.00.074.074.372.10.069.767.866.90.060.559.157.20.052.752.950.8

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

us-gaap:OperatingSegments, navi:ConsumerLending


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value137150154161174210222242255261267257252238224221192187
Percentage of InterestExpense40.445.639.737.933.529.428.728.328.027.527.827.527.128.228.228.226.727.7
Percentage of InterestAndDividendIncomeOperating20.721.721.121.221.221.320.820.821.221.221.020.720.520.319.319.417.918.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending46.447.00.046.048.151.70.054.957.858.30.056.056.655.00.049.649.649.9

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value210215220232286456510588627650650624622571536531498459
Percentage of InterestExpense61.965.356.754.655.163.965.968.968.868.567.666.767.067.767.667.669.368.0
Percentage of InterestAndDividendIncomeOperating31.831.130.130.534.946.247.850.452.152.751.250.350.748.746.246.646.545.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment59.859.90.059.062.677.60.080.381.281.70.079.378.977.00.077.173.672.5

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value181824303135394242395348494242413531282929262826283030293021181510.013
Percentage of InterestExpense5.35.56.27.16.04.95.04.94.64.15.55.15.35.05.35.24.94.64.34.64.84.65.45.05.45.85.85.75.84.03.32.81.82.3
Percentage of InterestAndDividendIncomeOperating2.72.63.33.93.83.53.73.63.53.24.23.94.03.63.63.63.33.12.72.82.82.52.62.42.62.72.72.62.61.61.41.10.71.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments1800.00.00.03000.03100.0875.00.0525.0600.0650.00.0480.0544.4700.00.01025.0437.5442.90.0966.7966.71300.00.02600.0933.31000.00.0966.71000.0525.00.0500.0250.0260.0

us-gaap:InterestExpense us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-24.0-53.0-10.0-5.03.06.0-5.0-14.0-11.0-5.0-4.0-3.0-4.0-1.0-3.0-2.0-3.0-3.0
Percentage of InterestExpense-7.1-16.1-2.6-1.20.60.8-0.6-1.6-1.2-0.5-0.4-0.3-0.4-0.1-0.4-0.3-0.4-0.4
Percentage of InterestAndDividendIncomeOperating-3.6-7.7-1.4-0.70.40.6-0.5-1.2-0.9-0.4-0.3-0.2-0.3-0.1-0.3-0.2-0.3-0.3
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting240.0588.90.035.7-21.4-42.90.082.464.729.40.016.722.25.90.015.421.421.4

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302016-06-30
Value-26.0-54.0-10.02.028133.0-18.0-13.0-1.0-9.06.06.0-8.0-8.0-7.0-4.06.07.09.0
Percentage of InterestExpense-7.7-16.4-2.60.55.41.80.4-2.1-1.4-0.1-0.90.60.6-0.9-1.0-0.9-0.60.91.11.5
Percentage of InterestAndDividendIncomeOperating-3.9-7.8-1.40.33.41.30.3-1.5-1.1-0.1-0.70.50.5-0.7-0.7-0.6-0.40.60.70.9
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting-185.7-385.70.011.8-2800.0-118.20.0120.081.26.20.0-40.0-40.088.90.0-233.3-100.00.050.030.0

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-2.0-1.00.07.0257.08.0-4.0-2.04.0-5.09.010.0-7.0-5.0-5.0-1.03.06.07.09.0
Percentage of InterestExpense-0.6-0.30.01.64.81.01.0-0.5-0.20.4-0.51.01.1-0.8-0.6-0.6-0.10.40.91.11.5
Percentage of InterestAndDividendIncomeOperating-0.3-0.10.00.93.10.70.7-0.3-0.20.3-0.40.70.8-0.6-0.4-0.4-0.10.30.60.70.9
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:ReclassificationsForCoreToGaapAccounting-8.3-4.30.022.6192.3233.30.0-200.0-200.0400.00.0300.0333.3-87.50.0-31.2-5.615.00.025.016.1

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value322363343336300273294312293285307306298329366355351340378412429486536553549583614624662766789799784795
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating48.752.546.944.236.627.727.526.824.323.124.224.724.328.131.631.132.833.536.839.741.746.250.751.351.653.154.555.156.359.159.259.658.658.2

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value282295314321329297310309296300313327319330357345343334374405408416445460452489
Percentage of InterestIncomeExpenseNet87.681.391.595.5109.7108.8105.499.0101.0105.3102.0106.9107.0100.397.597.297.798.298.998.395.185.683.083.282.383.9
Percentage of InterestAndDividendIncomeOperating42.742.643.042.240.230.129.026.524.624.324.726.326.028.230.830.332.132.936.439.039.739.642.142.742.544.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments43.643.50.043.140.129.80.026.224.324.00.026.025.727.90.030.332.233.10.039.540.942.80.047.347.149.2

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:ConsumerLending


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value158169174189188196195199186187189202193195208225195188
Percentage of InterestIncomeExpenseNet49.146.650.756.262.771.866.363.863.565.661.666.064.859.356.863.455.655.3
Percentage of InterestAndDividendIncomeOperating23.924.423.824.823.019.918.317.115.415.214.916.315.716.617.919.718.218.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending53.653.00.054.051.948.30.045.142.241.70.044.043.445.00.050.450.450.1

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value141144163161171132148144145146165163166171187158179174
Percentage of InterestIncomeExpenseNet43.839.747.547.957.048.450.346.249.551.253.753.355.752.051.144.551.051.2
Percentage of InterestAndDividendIncomeOperating21.320.822.321.220.913.413.912.312.011.813.013.113.514.616.113.916.717.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment40.240.10.041.037.422.40.019.718.818.30.020.721.123.00.022.926.427.5

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-17.0-18.0-23.0-29.0-30.0-31.0-33.0-34.0-35.0-33.0-41.0-38.0-40.0-36.0-38.0-37.0-27.0-24.0-23.0-26.0-26.0-24.0-25.0-25.0-25.0-27.0-27.0-26.0-27.0-17.0-13.0-12.0-6.0-8.0
Percentage of InterestIncomeExpenseNet-5.3-5.0-6.7-8.6-10.0-11.4-11.2-10.9-11.9-11.6-13.4-12.4-13.4-10.9-10.4-10.4-7.7-7.1-6.1-6.3-6.1-4.9-4.7-4.5-4.6-4.6-4.4-4.2-4.1-2.2-1.6-1.5-0.8-1.0
Percentage of InterestAndDividendIncomeOperating-2.6-2.6-3.1-3.8-3.7-3.1-3.1-2.9-2.9-2.7-3.2-3.1-3.3-3.1-3.3-3.2-2.5-2.4-2.2-2.5-2.5-2.3-2.4-2.3-2.3-2.5-2.4-2.3-2.3-1.3-1.0-0.9-0.4-0.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments-1700.00.00.0-2900.0-3000.0-775.00.0-425.0-500.0-550.00.0-380.0-444.4-600.00.0-925.0-337.5-342.90.0-866.7-866.7-1200.00.0-2500.0-833.3-900.00.0-866.7-900.0-425.00.0-400.0-150.0-160.0

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1444-3.0-9.0-17.0-20.0-12.0-3.0-6.0-12.0-13.0-15.0-14.0-16.0-11.0-11.0-11.0-11.0-15.0-14.0-26.0
Percentage of InterestIncomeExpenseNet4.312.1-0.9-2.7-5.7-7.3-4.1-1.0-2.0-4.2-4.2-4.9-4.7-4.9-3.0-3.1-3.1-3.2-4.0-3.4-6.1
Percentage of InterestAndDividendIncomeOperating2.16.4-0.4-1.2-2.1-2.0-1.1-0.3-0.5-1.0-1.0-1.2-1.1-1.4-0.9-1.0-1.0-1.1-1.5-1.3-2.5
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting-140.0-488.90.064.3121.4142.90.017.635.370.60.083.377.894.10.084.678.678.60.0100.0100.0

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value40682915-29.0-24.0-16.03.0-3.0-15.0-5.0-21.0-21.0-1.09.010.08.06.04.07.021
Percentage of InterestIncomeExpenseNet12.418.78.54.5-9.7-8.8-5.41.0-1.0-5.3-1.6-6.9-7.0-0.32.52.82.31.81.11.74.9
Percentage of InterestAndDividendIncomeOperating6.19.84.02.0-3.5-2.4-1.50.3-0.2-1.2-0.4-1.7-1.7-0.10.80.90.70.60.40.72.0
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting285.7485.70.088.22900.0218.20.0-20.018.893.80.0140.0140.011.10.0333.3200.0100.00.050.070.0

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value26243224-12.0-4.0-4.06.03.0-3.08.0-6.0-7.01520211917192147
Percentage of InterestIncomeExpenseNet8.16.69.37.1-4.0-1.5-1.41.91.0-1.12.6-2.0-2.34.65.55.95.45.05.05.111.0
Percentage of InterestAndDividendIncomeOperating3.93.54.43.2-1.5-0.4-0.40.50.2-0.20.6-0.5-0.61.31.71.81.81.71.82.04.6
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:ReclassificationsForCoreToGaapAccounting108.3104.30.077.4-92.3-133.30.0300.0300.0-300.00.0-200.0-233.3187.50.0131.2105.685.00.075.083.9

Interest Income Operating

us-gaap:InterestIncomeOperating

us-gaap:InterestIncomeOperating


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value761819987106811661204123412691241122711721159114010701015102810391028105110571077106410971127113211751296
Percentage of InterestIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value74482099810811181122012501283125612421181115811371066100910181025998972956973960994
Percentage of InterestIncomeOperating97.8100.1101.1101.2101.3101.3101.3101.1101.2101.2100.899.999.799.699.499.098.797.192.590.490.390.290.6
Percentage of InterestAndDividendIncomeOperating97.8100.1101.1101.2101.3101.3101.3101.1101.2101.2100.899.999.799.699.499.098.797.192.590.490.390.290.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems, us-gaap:FinancingReceivablePortfolioSegment

us-gaap:OperatingSegments, navi:EducationLoan


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value6466787117438189861063115811941222125012291217116311431123105099710091018990966
Percentage of InterestIncomeOperating0.00.00.097.699.999.999.599.399.299.098.599.099.299.298.698.598.198.298.298.096.391.9
Percentage of InterestAndDividendIncomeOperating97.798.097.397.699.999.999.599.399.299.098.599.099.299.298.698.598.198.298.298.096.391.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:EducationLoan0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:EducationLoan, navi:ConsumerLending


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value295319328350362404414437436443451455442431430445386374
Percentage of InterestIncomeOperating0.00.00.046.044.240.938.837.536.235.935.536.736.036.837.139.036.136.8
Percentage of InterestAndDividendIncomeOperating44.646.144.946.044.240.938.837.536.235.935.536.736.036.837.139.036.136.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:EducationLoan navi:ConsumerLending0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, navi:EducationLoan, navi:FederalEducationLoansSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value351359383393456582649721758779799774775732713678664623
Percentage of InterestIncomeOperating0.00.00.051.655.759.060.861.863.063.163.062.463.262.561.559.562.161.4
Percentage of InterestAndDividendIncomeOperating53.151.952.451.655.759.060.861.863.063.163.062.463.262.561.559.562.161.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:EducationLoan navi:FederalEducationLoansSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:ConsumerLending


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value350362406417441441448456459445433432446387375
Percentage of InterestIncomeOperating46.044.241.139.037.836.636.335.937.036.336.937.339.136.236.9
Percentage of InterestAndDividendIncomeOperating46.044.241.139.037.836.636.335.937.036.336.937.339.136.236.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value393457588658732772796815787788742723689677633
Percentage of InterestIncomeOperating51.655.859.661.662.864.164.564.263.464.263.362.460.463.362.4
Percentage of InterestAndDividendIncomeOperating51.655.859.661.662.864.164.564.263.464.263.362.460.463.362.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1.01.04.06.08.07.06.01210.09.06.04.04.08.07.05.03.03.02.03.01.03.03.03.03.03.04.0
Percentage of InterestIncomeOperating0.10.10.40.60.70.60.50.90.80.70.50.30.40.70.70.50.30.30.20.30.10.30.30.30.30.30.3
Percentage of InterestAndDividendIncomeOperating0.10.10.40.60.70.60.50.90.80.70.50.30.40.70.70.50.30.30.20.30.10.30.30.30.30.30.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-14.0-14.0-14.0-17.0-17.0-17.0-17.0-17.0-18.0-18.0-17.0-14.0-13.0-14.0-14.0-15.0-14.0-26.0
Percentage of InterestIncomeOperating-1.8-1.7-1.4-1.6-1.5-1.4-1.4-1.3-1.5-1.5-1.5-1.2-1.1-1.3-1.4-1.5-1.3-2.5
Percentage of InterestAndDividendIncomeOperating-1.8-1.7-1.4-1.6-1.5-1.4-1.4-1.3-1.5-1.5-1.5-1.2-1.1-1.3-1.4-1.5-1.3-2.5
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value17-1.0-11.0-13.0-15.0-16.0-16.0-14.0-15.0-15.0-9.01.03.04.06.010.01430
Percentage of InterestIncomeOperating2.2-0.1-1.1-1.2-1.3-1.3-1.3-1.1-1.2-1.2-0.80.10.30.40.61.01.32.9
Percentage of InterestAndDividendIncomeOperating2.2-0.1-1.1-1.2-1.3-1.3-1.3-1.1-1.2-1.2-0.80.10.30.40.61.01.32.9
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Interest
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value31133.04.02.01.01.03.03.03.08.015161820252856
Percentage of InterestIncomeOperating4.11.60.30.40.20.10.10.20.20.20.71.31.41.72.02.42.75.4
Percentage of InterestAndDividendIncomeOperating4.11.60.30.40.20.10.10.20.20.20.71.31.41.72.02.42.75.4
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:ReclassificationsForCoreToGaapAccounting100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0

us-gaap:InterestIncomeOperating us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:FinancingReceivablePortfolioSegment

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting, navi:EducationLoan


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value-10.0-9.0-13.0-14.0-14.0-14.0-17.0-17.0-17.0-17.0-17.0-18.0
Percentage of InterestIncomeOperating0.00.00.0-1.8-1.7-1.4-1.6-1.5-1.4-1.4-1.3-1.5
Percentage of InterestAndDividendIncomeOperating-1.5-1.3-1.8-1.8-1.7-1.4-1.6-1.5-1.4-1.4-1.3-1.5
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting navi:EducationLoan0.00.00.00.00.00.00.00.00.00.00.00.0

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting, navi:EducationLoan


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value14141917-1.0-11.0-13.0-15.0-16.0-16.0-14.0-15.0
Percentage of InterestIncomeOperating0.00.00.02.2-0.1-1.1-1.2-1.3-1.3-1.3-1.1-1.2
Percentage of InterestAndDividendIncomeOperating2.12.02.62.2-0.1-1.1-1.2-1.3-1.3-1.3-1.1-1.2
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting navi:EducationLoan0.00.00.00.00.00.00.00.00.00.00.00.0

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting, navi:EducationLoan


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value24233231133.04.02.01.01.03.03.0
Percentage of InterestIncomeOperating0.00.00.04.11.60.30.40.20.10.10.20.2
Percentage of InterestAndDividendIncomeOperating3.63.34.44.11.60.30.40.20.10.10.20.2
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:ReclassificationsForCoreToGaapAccounting navi:EducationLoan0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeOperating us-gaap:FinancingReceivablePortfolioSegment

navi:EducationLoan


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value6606927307608179751050114311781206123612141202115411441126105410031019103210201045
Percentage of InterestIncomeOperating0.00.00.099.999.898.898.398.097.897.797.497.898.098.598.798.898.598.899.199.399.299.4
Percentage of InterestAndDividendIncomeOperating99.8100.099.999.999.898.898.398.097.897.797.497.898.098.598.798.898.598.899.199.399.299.4
Percentage of InterestAndDividendIncomeOperating navi:EducationLoan0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:PrivateEducationLoans


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value295319328350362404414437436443451455442431430445386374374401402411
Percentage of InterestIncomeOperating0.00.00.046.044.240.938.837.536.235.935.536.736.036.837.139.036.136.836.438.639.139.1
Percentage of InterestAndDividendIncomeOperating44.646.144.946.044.240.938.837.536.235.935.536.736.036.837.139.036.136.836.438.639.139.1
Percentage of InterestAndDividendIncomeOperating navi:PrivateEducationLoans0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InterestIncomeOperating us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value365373402410455571636706742763785759760723714681668629645631618634
Percentage of InterestIncomeOperating0.00.00.053.955.657.959.660.561.661.861.961.261.961.761.659.762.462.062.760.760.160.3
Percentage of InterestAndDividendIncomeOperating55.253.955.053.955.657.959.660.561.661.861.961.261.961.761.659.762.462.062.760.760.160.3
Percentage of InterestAndDividendIncomeOperating us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value361362395450502712768866942903945897820798751742709670618595573515492498491500494484486519517525553568
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating54.652.354.059.161.372.171.974.378.273.274.572.366.868.164.865.166.366.060.157.355.749.046.546.246.145.643.842.841.440.038.839.241.441.6

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01711451531287211483126-84.017611288145230125181286237182292263359307219270260543346
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.012.412.710.45.79.26.810.8-7.215.410.58.714.122.112.217.227.122.017.126.623.331.726.116.920.319.440.625.3

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value16530516719217993153142175136140140131107
Percentage of NetIncomeLoss89.282.490.392.8143.2-87.789.597.9114.4106.2194.4122.8157.884.9
Percentage of InterestAndDividendIncomeOperating25.044.122.825.221.99.414.312.214.511.011.011.310.79.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments25.545.00.025.821.89.30.012.014.310.90.011.110.59.1

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:BusinessProcessing


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
Value292615166.02.07.09.07.010.08.04.08.010.0
Percentage of NetIncomeLoss15.77.08.17.74.8-1.94.16.24.67.811.13.59.67.9
Percentage of InterestAndDividendIncomeOperating4.43.82.12.10.70.20.70.80.60.80.60.30.70.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, navi:ConsumerLending


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
Value9623410711087548879856565726650
Percentage of NetIncomeLoss51.963.257.853.169.6-50.951.554.555.650.890.363.279.539.7
Percentage of InterestAndDividendIncomeOperating14.533.814.614.510.65.58.26.87.15.35.15.85.44.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending32.573.40.031.424.013.30.017.919.314.50.015.714.811.5

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


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
Value113112136137146119138128131127146143148141
Percentage of NetIncomeLoss61.130.373.566.2116.8-112.380.788.385.699.2202.8125.4178.3111.9
Percentage of InterestAndDividendIncomeOperating17.116.218.618.017.812.112.911.010.910.311.511.512.112.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment32.231.20.034.931.920.20.017.517.016.00.018.218.819.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-73.0-67.0-91.0-71.0-60.0-82.0-80.0-74.0-48.0-66.0-79.0-79.0-91.0-94.0-47.0-134.0-80.0-34.0-20.0-34.0
Percentage of NetIncomeLoss-39.5-18.1-49.2-34.3-48.077.4-46.8-51.0-31.4-51.6-109.7-69.3-109.6-74.6-15.3-61.2-29.6-13.1-3.7-9.8
Percentage of InterestAndDividendIncomeOperating-11.0-9.7-12.4-9.3-7.3-8.3-7.5-6.3-4.0-5.3-6.2-6.4-7.4-8.0-4.0-10.3-6.0-2.5-1.5-2.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments-7300.00.00.0-7100.0-6000.0-2050.00.0-925.0-685.7-1100.00.0-790.0-1011.1-1566.7-1566.7-3350.00.0-1133.3-500.0-680.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


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
Value20651815-54.0-199.0193.0-22.0-8.0-68.0-26.0-48.019
Percentage of NetIncomeLoss10.817.69.77.2-43.2187.711.12.1-14.4-6.2-94.4-22.8-57.815.1
Percentage of InterestAndDividendIncomeOperating3.09.42.52.0-6.6-20.21.80.3-1.8-0.6-5.4-2.1-3.91.6
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting-200.0-722.20.0-107.1385.71421.40.0-17.6129.447.10.0144.4266.7-111.8

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value20651815-54.0-199.0193.0-22.0-8.0-68.0-26.0-48.0194724-11.0-19.01773-29.0
Percentage of NetIncomeLoss10.817.69.77.2-43.2187.711.12.1-14.4-6.2-94.4-22.8-57.815.1-56.013.6-9.8-21.611.731.7-23.2
Percentage of InterestAndDividendIncomeOperating3.09.42.52.0-6.6-20.21.80.3-1.8-0.6-5.4-2.1-3.91.64.12.1-1.0-1.91.77.0-2.8
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting142.9464.30.088.25400.01809.10.0-20.0137.550.00.0173.3320.0-211.10.0800.0-275.0-316.70.0521.4-96.7

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value252259269232213251235251241256252255201275260238230238246228230247235228225230215195211366305257244235
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating38.137.436.830.526.025.422.021.520.020.719.920.516.423.522.420.921.523.423.921.922.423.522.221.221.121.019.117.218.028.222.919.218.217.2

us-gaap:OperatingExpenses us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value252259269232213251235251241256253255201275259238230238245228230247235228225230
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.4100.0100.0100.099.6100.0100.0100.099.6100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating38.137.436.830.526.025.422.021.520.020.719.920.516.423.522.320.921.523.423.821.922.423.522.221.221.121.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments38.938.20.031.226.025.20.021.319.820.50.020.316.223.30.020.921.623.60.022.223.025.40.023.423.423.1

us-gaap:OperatingExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:BusinessProcessing


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value929174695754505456555759545956494439
Percentage of OperatingExpenses36.535.127.529.726.821.521.321.523.221.522.623.126.921.521.520.619.116.4
Percentage of InterestAndDividendIncomeOperating13.913.210.19.17.05.54.74.64.74.54.54.84.45.04.84.34.13.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, navi:ConsumerLending


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value394137373439394434383638395645393735
Percentage of OperatingExpenses15.515.813.815.916.015.516.617.514.114.814.314.919.420.417.316.416.114.7
Percentage of InterestAndDividendIncomeOperating5.95.95.14.94.24.03.73.82.83.12.83.13.24.83.93.43.53.4
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending13.212.90.010.69.49.60.010.07.78.50.08.38.812.90.08.79.69.3

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value556370647083898989919687368071777986
Percentage of OperatingExpenses21.824.326.027.632.933.137.935.536.935.538.134.117.929.127.332.434.336.1
Percentage of InterestAndDividendIncomeOperating8.39.19.68.48.58.48.37.67.47.47.67.02.96.86.16.87.48.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment15.717.50.016.315.314.10.012.211.511.40.011.14.610.80.011.211.713.6

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6664886252755764627264717280746261695861626760635864655154177108474065
Percentage of OperatingExpenses26.224.732.726.724.429.924.325.525.728.125.427.835.829.128.526.126.529.023.626.827.027.125.527.625.827.830.226.225.648.435.418.316.427.7
Percentage of InterestAndDividendIncomeOperating10.09.212.08.16.37.65.35.55.15.85.05.75.96.86.45.45.76.85.65.96.06.45.75.85.55.85.84.54.613.78.13.53.04.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments6600.00.00.06200.05200.01875.00.0800.0885.71200.00.0710.0800.01333.30.01550.0762.5985.70.02033.32066.73350.00.06300.01933.32133.30.01700.01800.04425.00.01566.71000.01300.0

Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax

us-gaap:OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value17482023-17.0-209.033-44.0-123.0-70.0
Percentage of OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.66.92.73.0-2.1-21.23.1-3.8-10.2-5.7

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value17482023-17.0-209.033-44.0-123.0-70.0-114.0243099459.0-15.01613245-39.0-81.031-56.010.0-45.01.01.00.0-6.05.0-1.0132.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.66.92.73.0-2.1-21.23.1-3.8-10.2-5.7-9.01.92.48.43.90.8-1.41.612.84.3-3.8-7.72.9-5.20.9-4.10.10.10.0-0.50.4-0.11.00.1

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value17482023-17.0-209.033-44.0-123.0-70.0-114.0243099459.0-15.01613245-39.0-81.031-56.010.0-45.01.01.00.0-6.05.0-1.0132.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.66.92.73.0-2.1-21.23.1-3.8-10.2-5.7-9.01.92.48.43.90.8-1.41.612.84.3-3.8-7.72.9-5.20.9-4.10.10.10.0-0.50.4-0.11.00.1
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value17482023-17.0-209.033-44.0-123.0-70.0-114.0243099459.0-15.01613245-39.0-81.031-56.010.0-45.01.01.00.0-6.05.0-1.0132.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating2.66.92.73.0-2.1-21.23.1-3.8-10.2-5.7-9.01.92.48.43.90.8-1.41.612.84.3-3.8-7.72.9-5.20.9-4.10.10.10.0-0.50.4-0.11.00.1
Percentage of InterestAndDividendIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01721451531287211483126-84.017611288145230125181286237182292263359307219270260542346
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.112.412.710.45.79.26.810.8-7.215.410.58.714.122.112.217.227.122.017.126.623.331.726.116.920.319.440.525.3

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01721451531287211483126-84.017611288146230125181286237182292264359307219269260543346
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.7100.0100.0100.0100.0100.0100.0100.0100.4100.0100.0100.099.6100.0100.2100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.112.412.710.45.79.26.810.8-7.215.410.58.714.222.112.217.227.122.017.126.623.431.726.116.920.219.440.625.3
Percentage of InterestAndDividendIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01721451531287211483126-84.017611288146230125181286237182292264359307219269260543346
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.7100.0100.0100.0100.0100.0100.0100.0100.4100.0100.0100.099.6100.0100.2100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.112.412.710.45.79.26.810.8-7.215.410.58.714.222.112.217.227.122.017.126.623.431.726.116.920.219.440.625.3
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value134130107108858894991009896868493
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating20.318.814.614.210.48.98.88.58.37.97.66.96.87.9

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers

navi:FederalGovernment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.09.01113142329262116167.03.02.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.56.910.312.016.526.130.926.321.016.316.78.13.62.2
Percentage of InterestAndDividendIncomeOperating0.91.31.51.71.72.32.72.21.71.31.30.60.20.2
Percentage of InterestAndDividendIncomeOperating navi:FederalGovernment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:GuarantorAgencies


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.04.08.09.09.0131212141414141516
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.17.58.310.614.812.812.114.014.314.616.317.917.2
Percentage of InterestAndDividendIncomeOperating0.60.61.11.21.11.31.11.01.21.11.11.11.21.4
Percentage of InterestAndDividendIncomeOperating navi:GuarantorAgencies0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:HospitalsAndOtherHealthCareProviders


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6462353421242527252625242420
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.847.732.731.524.727.326.627.325.026.526.027.928.621.5
Percentage of InterestAndDividendIncomeOperating9.79.04.84.52.62.42.32.32.12.12.01.92.01.7
Percentage of InterestAndDividendIncomeOperating navi:HospitalsAndOtherHealthCareProviders0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:OtherInstitutions


Revenue
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.00.01.00.01.04.03.02.03.03.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.01.20.01.04.03.12.13.53.63.2
Percentage of InterestAndDividendIncomeOperating0.10.00.10.00.10.30.20.20.20.20.3
Percentage of InterestAndDividendIncomeOperating navi:OtherInstitutions0.00.00.00.00.00.00.00.00.00.00.0

navi:StateAndLocalGovernment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4642383929161619232522212326
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.332.335.536.134.118.217.019.223.025.522.924.427.428.0
Percentage of InterestAndDividendIncomeOperating7.06.15.25.13.51.61.51.61.92.01.71.71.92.2
Percentage of InterestAndDividendIncomeOperating navi:StateAndLocalGovernment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:TollingAuthorities


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1413141311121214131417171626
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.410.013.112.012.913.612.814.113.014.317.719.819.028.0
Percentage of InterestAndDividendIncomeOperating2.11.91.91.71.31.21.11.21.11.11.31.41.32.2
Percentage of InterestAndDividendIncomeOperating navi:TollingAuthorities0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers, us-gaap:StatementBusinessSegments

navi:FederalGovernment, navi:BusinessProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.08.06.04.03.05.06.05.04.03.02.02.02.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.56.25.63.73.55.76.45.14.03.12.12.32.41.1
Percentage of InterestAndDividendIncomeOperating0.91.20.80.50.40.50.60.40.30.20.20.20.20.1
Percentage of InterestAndDividendIncomeOperating navi:FederalGovernment navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:FederalGovernment, navi:FederalEducationLoansSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.01.05.09.0111823211713145.01.01.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.84.78.312.920.524.521.217.013.314.65.81.21.1
Percentage of InterestAndDividendIncomeOperating0.00.10.71.21.31.82.21.81.41.11.10.40.10.1
Percentage of InterestAndDividendIncomeOperating navi:FederalGovernment navi:FederalEducationLoansSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:GuarantorAgencies, navi:FederalEducationLoansSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.04.08.09.09.0131212141414141516
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.17.58.310.614.812.812.114.014.314.616.317.917.2
Percentage of InterestAndDividendIncomeOperating0.60.61.11.21.11.31.11.01.21.11.11.11.21.4
Percentage of InterestAndDividendIncomeOperating navi:GuarantorAgencies navi:FederalEducationLoansSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:HospitalsAndOtherHealthCareProviders, navi:BusinessProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6462353421242527252625242420
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.847.732.731.524.727.326.627.325.026.526.027.928.621.5
Percentage of InterestAndDividendIncomeOperating9.79.04.84.52.62.42.32.32.12.12.01.92.01.7
Percentage of InterestAndDividendIncomeOperating navi:HospitalsAndOtherHealthCareProviders navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:OtherInstitutions, navi:FederalEducationLoansSegment


Revenue
Period End2020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.00.01.00.01.04.03.02.03.03.03.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.90.01.20.01.04.03.12.13.53.63.2
Percentage of InterestAndDividendIncomeOperating0.10.00.10.00.10.30.20.20.20.20.3
Percentage of InterestAndDividendIncomeOperating navi:OtherInstitutions navi:FederalEducationLoansSegment0.00.00.00.00.00.00.00.00.00.00.0

navi:StateAndLocalGovernment, navi:BusinessProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4642383929161619232522212326
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax34.332.335.536.134.118.217.019.223.025.522.924.427.428.0
Percentage of InterestAndDividendIncomeOperating7.06.15.25.13.51.61.51.61.92.01.71.71.92.2
Percentage of InterestAndDividendIncomeOperating navi:StateAndLocalGovernment navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:TollingAuthorities, navi:BusinessProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1413141311121214131417171626
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax10.410.013.112.012.913.612.814.113.014.317.719.819.028.0
Percentage of InterestAndDividendIncomeOperating2.11.91.91.71.31.21.11.21.11.11.31.41.32.2
Percentage of InterestAndDividendIncomeOperating navi:TollingAuthorities navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

navi:FederalEducationLoanAssetRecoveryServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.05.0141821313534353030221920
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.813.116.724.735.237.234.335.030.631.225.622.621.5
Percentage of InterestAndDividendIncomeOperating0.60.71.92.42.63.13.32.92.92.42.41.81.51.7
Percentage of InterestAndDividendIncomeOperating navi:FederalEducationLoanAssetRecoveryServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:GovernmentServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6663585643333438404241404153
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.348.554.251.950.637.536.238.440.042.942.746.548.857.0
Percentage of InterestAndDividendIncomeOperating10.09.17.97.45.33.33.23.33.33.43.23.23.34.5
Percentage of InterestAndDividendIncomeOperating navi:GovernmentServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:HealthcareServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6462353421242527252625242420
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.847.732.731.524.727.326.627.325.026.526.027.928.621.5
Percentage of InterestAndDividendIncomeOperating9.79.04.84.52.62.42.32.32.12.12.01.92.01.7
Percentage of InterestAndDividendIncomeOperating navi:HealthcareServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

navi:FederalEducationLoanAssetRecoveryServices, navi:FederalEducationLoansSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.05.0141821313534353030221920
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.813.116.724.735.237.234.335.030.631.225.622.621.5
Percentage of InterestAndDividendIncomeOperating0.60.71.92.42.63.13.32.92.92.42.41.81.51.7
Percentage of InterestAndDividendIncomeOperating navi:FederalEducationLoanAssetRecoveryServices navi:FederalEducationLoansSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:GovernmentServices, navi:BusinessProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6663585643333438404241404153
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax49.348.554.251.950.637.536.238.440.042.942.746.548.857.0
Percentage of InterestAndDividendIncomeOperating10.09.17.97.45.33.33.23.33.33.43.23.23.34.5
Percentage of InterestAndDividendIncomeOperating navi:GovernmentServices navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:HealthcareServices, navi:BusinessProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6462353421242527252625242420
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax47.847.732.731.524.727.326.627.325.026.526.027.928.621.5
Percentage of InterestAndDividendIncomeOperating9.79.04.84.52.62.42.32.32.12.12.01.92.01.7
Percentage of InterestAndDividendIncomeOperating navi:HealthcareServices navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementBusinessSegments

navi:BusinessProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value130125939064575965656866646573
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax97.096.286.983.375.364.862.865.765.069.468.874.477.478.5
Percentage of InterestAndDividendIncomeOperating19.718.112.711.87.85.85.55.65.45.55.25.25.36.2
Percentage of InterestAndDividendIncomeOperating navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:FederalEducationLoansSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value4.05.0141821313534353030221920
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.03.813.116.724.735.237.234.335.030.631.225.622.621.5
Percentage of InterestAndDividendIncomeOperating0.60.71.92.42.63.13.32.92.92.42.41.81.51.7
Percentage of InterestAndDividendIncomeOperating navi:FederalEducationLoansSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value833488495787412896649104593245949039655398320100579104176106493108949113209114991117085120354117890121136125312128372131377134112137666140220143872146352140345142976156472159543
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityNotPrimaryBeneficiary


Assetsus-gaap:
Period End2020-12-31
Value13
Percentage of Assets0.0
Percentage of Assets0.0
Percentage of Assets us-gaap:VariableInterestEntityNotPrimaryBeneficiary100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value7640677617804688163282831856388745996503
Percentage of Assets91.791.492.191.091.091.892.292.6
Percentage of Assets91.791.492.191.091.091.892.292.6
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:BeforeHedgeAccountingAdjustments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value7652277852807768210783453863158805297145
Percentage of Assets91.891.692.491.691.792.692.893.3
Percentage of Assets91.891.692.491.691.792.692.893.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:BeforeHedgeAccountingAdjustments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:FFELPLoanABCPFacilities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4811551264533383569360335865950
Percentage of Assets0.61.83.03.73.93.93.85.7
Percentage of Assets0.61.83.03.73.93.93.85.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:FFELPLoanABCPFacilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:FFELPLoanSecuritizations


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5789358354585795912960374621116406770658
Percentage of Assets69.568.767.065.966.366.667.567.8
Percentage of Assets69.568.767.065.966.366.667.567.8
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:FFELPLoanSecuritizations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:HedgeAccountingAdjustments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value-116.0-235.0-308.0-475.0-622.0-677.0-593.0-642.0
Percentage of Assets-0.1-0.3-0.4-0.5-0.7-0.7-0.6-0.6
Percentage of Assets-0.1-0.3-0.4-0.5-0.7-0.7-0.6-0.6
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:HedgeAccountingAdjustments100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:PrivateEducationLoanABCPFacilities


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value25952193293629923385441543263467
Percentage of Assets3.12.63.43.33.74.74.63.3
Percentage of Assets3.12.63.43.33.74.74.63.3
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:PrivateEducationLoanABCPFacilities100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:PrivateEducationLoanSecuritizations


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1555315754166161664816125161861607317070
Percentage of Assets18.718.519.018.617.717.416.916.4
Percentage of Assets18.718.519.018.617.717.416.916.4
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:PrivateEducationLoanSecuritizations100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:StatementBusinessSegments

navi:BusinessProcessing


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value416436425431416426423426425440448447474492466
Percentage of Assets0.50.50.50.50.50.50.40.40.40.40.40.40.40.40.4
Percentage of Assets0.50.50.50.50.50.50.40.40.40.40.40.40.40.40.4
Percentage of Assets navi:BusinessProcessing100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

navi:ConsumerLending


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2148621593228712309723099242312410323796235072393524053242682452025268
Percentage of Assets25.825.426.225.825.426.025.424.623.923.823.122.822.522.0
Percentage of Assets25.825.426.225.825.426.025.424.623.923.823.122.822.522.0
Percentage of Assets navi:ConsumerLending100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

navi:FederalEducationLoansSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value593826083562210635976506366875688207037772349743887772178880815508470687125
Percentage of Assets71.271.671.270.971.571.772.572.973.674.074.674.174.974.875.8
Percentage of Assets71.271.671.270.971.571.772.572.973.674.074.674.174.974.875.8
Percentage of Assets navi:FederalEducationLoansSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllOtherSegments


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value2100210019002500250017001600200020001800200029002400320022002000210022002100260022002000240020002300270021003000
Percentage of Assets2.52.52.22.82.71.81.72.12.01.81.92.72.22.81.91.71.71.91.72.11.71.51.81.51.61.91.41.9
Percentage of Assets2.52.52.22.82.71.81.72.12.01.81.92.72.22.81.91.71.71.91.72.11.71.51.81.51.61.91.41.9
Percentage of Assets us-gaap:AllOtherSegments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value80636822208496587399889199119791554933019500897136100629102738105204109541111506113535116790114218117413121578124669127538130113133779136287139781142154136189138955150874153901
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets96.796.897.297.597.797.896.596.696.696.696.696.596.696.897.097.097.096.996.997.097.197.197.097.297.297.297.197.097.296.496.5

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value833488495787412896649104593245949039655398320100579104176106493108949113209114991117085120354117890121136125312128372131377134112137666140220143872146352140345142976156472159543
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2701272324332254211520353336324033013430351937243714363734543526354036483699371036793815397538833929408741984156402155935637
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.22.82.52.32.23.53.43.43.43.43.53.43.23.03.02.93.13.13.02.92.93.02.82.82.82.93.02.83.63.5

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value145314971183177516321084123315831746120612862143162223981518124811531364125318231377116815941305161420511443194216363742519043293327368539002794
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets1.71.81.42.01.81.21.31.61.81.21.22.01.52.11.31.11.01.21.01.51.10.91.20.91.21.41.01.41.12.43.30.00.00.00.00.0

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value37624102353742143989376837814260442642205262524850085797464645134616495247125186
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.54.84.04.74.44.04.04.44.54.25.14.94.65.14.03.93.84.23.93.9

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value113113116127129132135134136136136138144150156152152157160162
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value665665665701545551353394
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.60.60.40.40.20.2

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value70921211081241541630
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.10.10.00.0

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

navi:SoftwareTechnology


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value131825191913
Percentage of FiniteLivedIntangibleAssetsNet18.619.620.717.615.38.4
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets navi:SoftwareTechnology0.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value3242585873
Percentage of FiniteLivedIntangibleAssetsNet45.745.747.953.758.9
Percentage of Assets0.00.00.10.10.1
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.0

us-gaap:TrademarksAndTradeNames


Finite
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value2532373031369.013
Percentage of FiniteLivedIntangibleAssetsNet35.734.830.627.825.023.456.243.3
Percentage of Assets0.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:TrademarksAndTradeNames0.00.00.00.00.00.00.00.0

Intangible Assets Net Including Goodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill

us-gaap:IntangibleAssetsNetIncludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value726731735741746752757763769780786792798802810727658664670683696702705544546549369371373421424
Percentage of IntangibleAssetsNetIncludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.80.80.80.80.80.80.80.80.80.70.70.70.70.60.50.60.60.50.50.50.50.40.40.40.30.30.30.30.3

Deferred Tax Assets Liabilities Net

us-gaap:DeferredTaxAssetsLiabilitiesNet

us-gaap:DeferredTaxAssetsLiabilitiesNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value54030732239280293313481319
Percentage of DeferredTaxAssetsLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.30.30.30.70.70.90.8

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value75814756747733279137802608129781715847698677688140935199608998690102797105012108557110778109586112368116540119637122920124833128293130387132330136866127669131919136177136648
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 Assets91.089.188.588.388.287.286.187.888.387.689.890.290.690.891.392.792.093.092.893.093.293.693.193.293.092.093.591.092.387.085.6

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value6885067746689007064171085721257285682738
Percentage of LongTermDebt90.889.589.189.388.688.789.288.5
Percentage of Assets82.679.778.878.878.177.376.879.4
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary90.187.385.686.585.884.283.385.7

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities, us-gaap:SecuritiesFinancingTransaction

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value6887567873690677097271570726647329583194
Percentage of LongTermDebt90.889.789.389.789.289.489.789.0
Percentage of Assets82.679.979.079.278.677.977.279.9
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:BeforeHedgeAccountingAdjustments90.087.285.586.485.884.283.285.6

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:FFELPLoanABCPFacilities


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4621694798437397116172625
Percentage of LongTermDebt0.60.20.61.10.90.90.82.8
Percentage of Assets0.60.20.50.90.80.80.72.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:FFELPLoanABCPFacilities96.010.918.125.320.719.717.244.1

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:FFELPLoanSecuritizations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value5400054469546975535456494579885973566318
Percentage of LongTermDebt71.272.070.769.970.471.373.170.9
Percentage of Assets64.864.162.661.762.162.262.963.7
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:FFELPLoanSecuritizations93.393.393.493.693.693.493.293.9

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:HedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value-25.0-127.0-167.0-331.0-485.0-539.0-439.0-456.0
Percentage of LongTermDebt-0.0-0.2-0.2-0.4-0.6-0.7-0.5-0.5
Percentage of Assets-0.0-0.1-0.2-0.4-0.5-0.6-0.5-0.4
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:HedgeAccountingAdjustments21.654.054.269.778.079.674.071.0

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:PrivateEducationLoanABCPFacilities


Long
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312018-12-31
Value125912761351142715131266
Percentage of LongTermDebt1.71.61.71.81.91.4
Percentage of Assets1.51.41.51.51.61.2
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:PrivateEducationLoanABCPFacilities48.542.639.932.335.036.5

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:PrivateEducationLoanSecuritizations


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value1315413235138911349912986125381143012985
Percentage of LongTermDebt17.417.518.017.116.215.414.013.9
Percentage of Assets15.815.615.915.114.313.412.012.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary navi:PrivateEducationLoanSecuritizations84.684.083.681.180.577.571.176.1

us-gaap:LongTermDebt us-gaap:DebtInstrument, us-gaap:SecuritiesFinancingTransaction

navi:FFELPLoanABCPFacilities, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-31
Value4621694798437397116172625
Percentage of LongTermDebt0.60.20.61.10.90.90.82.8
Percentage of Assets0.60.20.50.90.80.80.72.5
Percentage of Assets navi:FFELPLoanABCPFacilities navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.0

navi:FFELPLoanAssetBackedSecuritizationsRepurchaseFacilities, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value15515615713317017223121421429024481
Percentage of LongTermDebt0.20.20.20.20.20.20.30.30.20.30.30.1
Percentage of Assets0.20.20.20.10.20.20.20.20.20.30.20.1
Percentage of Assets navi:FFELPLoanAssetBackedSecuritizationsRepurchaseFacilities navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.0

navi:FFELPLoanSecuritizations, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-31
Value54000544695469755354564945798859735613496240563735663186845669786710387120873522
Percentage of LongTermDebt71.272.070.769.970.471.373.172.471.972.370.971.270.769.167.865.4
Percentage of Assets64.864.162.661.762.162.262.963.563.563.463.764.364.162.761.960.7
Percentage of Assets navi:FFELPLoanSecuritizations navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:FixedInterestRateDebt, navi:BeforeHedgeAccountingAdjustments


Long
Period End2020-12-312019-12-31
Value1614
Percentage of LongTermDebt0.00.0
Percentage of Assets0.00.0
Percentage of Assets navi:FixedInterestRateDebt navi:BeforeHedgeAccountingAdjustments0.00.0

navi:FloatingInterestRateDebt, navi:BeforeHedgeAccountingAdjustments


Long
Period End2020-12-312019-12-31
Value6067
Percentage of LongTermDebt0.10.1
Percentage of Assets0.10.1
Percentage of Assets navi:FloatingInterestRateDebt navi:BeforeHedgeAccountingAdjustments0.00.0

navi:ForeignCurrencyDollerDenominatedDebt, navi:BeforeHedgeAccountingAdjustments


Long
Period End2020-12-312019-12-31
Value36004000
Percentage of LongTermDebt4.74.9
Percentage of Assets4.14.2
Percentage of Assets navi:ForeignCurrencyDollerDenominatedDebt navi:BeforeHedgeAccountingAdjustments0.00.0

navi:PrivateEducationLoanABCPFacilities, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302020-09-302020-06-302020-03-312019-12-312018-12-31
Value125912761351142715131266
Percentage of LongTermDebt1.71.61.71.81.91.4
Percentage of Assets1.51.41.51.51.61.2
Percentage of Assets navi:PrivateEducationLoanABCPFacilities navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.0

navi:PrivateEducationLoanSecuritizations, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value13154132351389113499129861253811430120491254112253129851157912507137911264612575130001334314125154021616816557169001674417231179921799718835
Percentage of LongTermDebt17.417.518.017.116.215.414.014.214.513.913.912.112.713.412.011.611.712.212.613.213.513.513.513.113.213.613.113.8
Percentage of Assets15.815.615.915.114.313.412.012.512.812.212.510.911.512.211.010.710.811.311.712.312.612.612.612.212.312.512.311.8
Percentage of Assets navi:PrivateEducationLoanSecuritizations navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:PrivateEducationLoanSecuritizationsRepurchaseFacility, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-31
Value0.00.026026026026019492192192120001100180027001300130095747647510001000546546
Percentage of LongTermDebt0.00.00.30.30.30.30.21.11.11.02.11.11.82.61.21.20.90.40.40.90.80.40.4
Percentage of Assets0.00.00.30.30.30.30.21.00.90.91.91.01.72.41.11.10.80.40.40.80.80.40.4
Percentage of Assets navi:PrivateEducationLoanSecuritizationsRepurchaseFacility navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:SeniorUnsecuredDebt, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6465743677147709833183538461900690059139106741076510771114131262412366123581342413029130381280112987139761459714675148301631116056
Percentage of LongTermDebt8.59.810.09.710.410.310.410.610.410.411.411.210.911.112.011.411.212.211.611.210.710.611.211.411.311.211.911.7
Percentage of Assets7.88.88.88.69.29.08.99.39.29.110.210.19.910.111.010.610.311.410.810.410.09.910.410.610.510.311.110.1
Percentage of Assets navi:SeniorUnsecuredDebt navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:SecuredDebt, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value688756787369067709727157072664732957587977835792898319485822883119145492394961679863396799100090103253106475109414110940113291115533117412119596115745
Percentage of LongTermDebt90.889.789.389.789.289.489.789.589.790.089.089.389.589.088.088.689.088.389.188.689.089.088.988.388.688.787.484.7
Percentage of Assets82.679.979.079.278.677.977.278.679.278.879.980.681.180.880.382.182.082.182.682.482.983.382.782.382.481.681.772.5
Percentage of Assets us-gaap:SecuredDebt navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:UnsecuredDebt, navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value6465743677147709833183538461900690059139106741076510771114131262412366123581342413029130381280112987139761459714675148301631118863
Percentage of LongTermDebt8.59.810.09.710.410.310.410.610.410.411.411.210.911.112.011.411.212.211.611.210.710.611.211.411.311.211.913.8
Percentage of Assets7.88.88.88.69.29.08.99.39.29.110.210.19.910.111.010.610.311.410.810.410.09.910.410.610.510.311.111.8
Percentage of Assets us-gaap:UnsecuredDebt navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:InvestmentType

us-gaap:FixedMaturities


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value773328171593519105012112368
Percentage of LongTermDebt100.0100.0100.0100.0100.0
Percentage of Assets88.586.189.891.392.8
Percentage of Assets us-gaap:FixedMaturities0.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:InvestmentType, us-gaap:LongtermDebtType

us-gaap:FixedMaturities, navi:SeniorUnsecuredDebt


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value84328859107811286413479
Percentage of LongTermDebt10.910.811.512.312.0
Percentage of Assets9.69.310.311.211.1
Percentage of Assets us-gaap:FixedMaturities navi:SeniorUnsecuredDebt0.00.00.00.00.0

us-gaap:FixedMaturities, us-gaap:SecuredDebt


Long
Period End2020-12-312019-12-312018-12-312017-12-312016-12-31
Value6890072856827389214898889
Percentage of LongTermDebt89.189.288.587.788.0
Percentage of Assets78.876.879.480.181.6
Percentage of Assets us-gaap:FixedMaturities us-gaap:SecuredDebt0.00.00.00.00.0

us-gaap:LongTermDebt us-gaap:SecuritiesFinancingTransaction

navi:BeforeHedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value75340753097678178681799018101781756848858684088428938689658799082102867105018108533110991110223113119116291119276122401124916127888130208132242135907134608
Percentage of LongTermDebt99.499.599.399.499.699.7100.1100.1100.1100.3100.4100.5100.4100.1100.0100.0100.2100.6100.799.899.799.6100.199.799.999.999.398.5
Percentage of Assets90.488.687.887.887.886.986.187.988.387.990.190.790.990.991.392.792.293.593.492.892.993.293.192.992.991.992.984.4
Percentage of Assets navi:BeforeHedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

navi:HedgeAccountingAdjustments


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value474365551456359280-41.0-116.0-64.0-288.0-349.0-498.0-392.0-70.0-6.024-213.0-637.0-751.0249361519-83.0405179889592040
Percentage of LongTermDebt0.60.50.70.60.40.3-0.1-0.1-0.1-0.3-0.4-0.5-0.4-0.1-0.00.0-0.2-0.6-0.70.20.30.4-0.10.30.10.10.71.5
Percentage of Assets0.60.40.60.50.40.3-0.0-0.1-0.1-0.3-0.3-0.5-0.4-0.1-0.00.0-0.2-0.5-0.60.20.30.4-0.10.30.10.10.71.3
Percentage of Assets navi:HedgeAccountingAdjustments0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-03-312013-12-31
Value11141411111313121113283131313124242424242424245.05.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value2701272324332254211520353336324033013430351937243714363734543526354036483699371036793815397538833929408741984156402155935637
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.23.22.82.52.32.23.53.43.43.43.43.53.43.23.03.02.93.13.13.02.92.93.02.82.82.82.93.02.83.63.5

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-04-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value2712273724472265212620483349325233123443354737553745366834853550356436723723373437033839399938873933409141984156402117105598564256325434515450665251
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.33.22.82.52.32.23.53.43.43.43.43.53.43.23.03.03.03.13.13.02.92.93.02.82.82.82.93.02.80.03.63.50.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value-209.0-226.0-274.0-294.0-317.0-300.0-91.0-124.0-80.04311322720317361167.0226.0-126.0-171.0-132.0-51.0-82.0-26.0-36.09.08.07.07.0138.09.0-4.0-6.0-14.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-7.7-8.3-11.2-13.0-14.9-14.6-2.7-3.8-2.41.23.26.05.44.71.80.50.20.60.2-3.4-4.6-3.4-1.3-2.1-0.7-0.90.20.20.20.10.20.10.2-0.1-0.1-0.3
Percentage of Assets-0.3-0.3-0.3-0.3-0.3-0.3-0.1-0.1-0.10.00.10.20.20.20.10.00.00.00.0-0.1-0.1-0.1-0.0-0.1-0.0-0.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value326832553226322032153212319831883181317431453142313431273077306730563047302230062985297529672964295429352893288028684461439943734355429142374136
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest120.5118.9131.8142.2151.2156.895.598.096.092.288.783.783.785.388.386.485.783.081.280.580.677.574.276.375.171.768.969.371.379.778.077.680.183.383.678.8
Percentage of Assets3.93.83.73.63.53.43.43.33.23.23.03.02.92.82.72.62.52.62.52.42.32.32.22.22.12.02.02.12.02.92.80.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value4.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.0110109109109108107106
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.20.20.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.12.01.91.92.02.12.12.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.00.00.00.00.0
Percentage of Assets us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value11141411111313121113283131313124242424242424244.04.04.05.05.05.05.06.06.08.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.40.50.60.50.50.60.40.40.30.40.80.80.80.80.90.70.70.70.60.60.60.60.60.10.10.10.10.10.10.10.10.10.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value270127232433225421152035333632403301343035193724371436373454352635403648369937103679381539753883392940874198415640215593563756275429514850605243
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.699.599.499.599.599.499.699.699.799.699.299.299.299.299.199.399.399.399.499.499.499.499.499.999.999.9100.0100.0100.099.999.999.999.999.999.999.8
Percentage of Assets3.23.22.82.52.32.23.53.43.43.43.43.53.43.23.03.02.93.13.13.02.92.93.02.82.82.82.93.02.83.63.50.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value38283670333131752999290536643527341833033218318631143073300431302997293028902858267726042480225120721951172415211224273325842385219517231451770
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest141.2134.1136.1140.2141.1141.8109.4108.5103.295.990.784.883.283.886.288.284.179.877.676.572.367.862.057.952.747.741.136.630.448.845.842.340.433.428.614.7
Percentage of Assets4.64.33.83.53.33.13.93.73.53.33.13.02.92.72.62.72.52.52.42.32.12.01.81.61.51.41.21.10.91.71.60.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TreasuryStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312011-12-31
Value-4190.0-3980.0-3854.0-3851.0-3786.0-3786.0-3439.0-3355.0-3222.0-3094.0-2961.0-2835.0-2741.0-2740.0-2692.0-2691.0-2524.0-2355.0-2223.0-2032.0-1816.0-1636.0-1425.0-1254.0-1075.0-767.0-432.0-257.0-82.0-2283.0-2033.0-1813.0-1804.0-1535.0-1294.0-320.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-154.5-145.4-157.5-170.0-178.1-184.9-102.7-103.2-97.3-89.9-83.5-75.5-73.2-74.7-77.2-75.8-70.8-64.1-59.7-54.4-49.0-42.6-35.6-32.3-27.3-18.7-10.3-6.2-2.0-40.8-36.0-32.2-33.2-29.8-25.5-6.1
Percentage of Assets-5.0-4.7-4.4-4.3-4.2-4.1-3.6-3.5-3.3-3.1-2.8-2.7-2.5-2.4-2.3-2.3-2.1-2.0-1.8-1.6-1.4-1.2-1.1-0.9-0.8-0.5-0.3-0.2-0.1-1.5-1.30.00.00.00.00.0
Percentage of Assets us-gaap:TreasuryStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue

us-gaap:CommonStockValue


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value4.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.04.0110109
Percentage of CommonStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.1

Additional Paid In Capital Common Stock

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AdditionalPaidInCapitalCommonStock


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value326832553226322032153212319831883181317431453142313431273077306730563047302230062985297529672964295429352893
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.93.83.73.63.53.43.43.33.23.23.03.02.92.82.72.62.52.62.52.42.32.32.22.22.12.02.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value3828367033313175299929053664352734183303321831863114307330043130299729302890285826772604248022512072195117241521122427332584
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.64.33.83.53.33.13.93.73.53.33.13.02.92.72.62.72.52.52.42.32.12.01.81.61.51.41.21.10.91.71.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value-209.0-226.0-274.0-294.0-317.0-300.0-91.0-124.0-80.04311322720317361167.0226.0-126.0-171.0-132.0-51.0-82.0-26.0-36.09.08.07.07.013
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-0.3-0.3-0.3-0.3-0.3-0.3-0.1-0.1-0.10.00.10.20.20.20.10.00.00.00.0-0.1-0.1-0.1-0.0-0.1-0.0-0.00.00.00.00.00.0

Treasury Stock Value

us-gaap:TreasuryStockValue

us-gaap:TreasuryStockValue


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-31
Value41903980385438513786378634393355322230942961283527412740269226912524235522232032181616361425125410757674322578222832033
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets5.04.74.44.34.24.13.63.53.33.12.82.72.52.42.32.32.12.01.81.61.41.21.10.90.80.50.30.20.11.51.3

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-03-312013-12-31
Value11141411111313121113283131313124242424242424245.05.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10.0193.01.01.05.05.04.02.0170.04.01.0371.04.03.01110.0174.04.01.06.05.0216.05.01334138.05134
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10.0193.01.01.05.05.04.02.0170.04.01.0371.04.03.01110.0174.04.01.06.05.0216.05.09433138.05033
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0723.197.1100.0100.098.097.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10.0193.01.01.05.05.04.02.0170.04.01.0371.04.03.01110.0174.04.01.06.05.0216.05.01334138.05134
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.010.03.05.02.09.05.03.05.0123.04.06.0139.07.06.0144.04.05.0122.04.011126.05.010.01810.08.010.019
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.010.03.05.02.09.05.03.05.0123.04.06.0139.07.06.0144.04.05.0122.04.011126.05.010.01810.08.010.019
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.010.03.05.02.09.05.03.05.0123.04.06.0139.07.06.0144.04.05.0122.04.011126.05.010.01810.08.010.019
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value15417917122114245318830933418848517319828424428428035024334342934245140455649949502555558568478425529
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating23.325.923.429.017.345.917.626.527.715.238.213.916.124.221.124.926.234.523.633.041.732.542.737.552.345.54.344.347.243.142.635.731.838.7

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value133428851530152624079851079152524732408216124433035272123002943-1136.0301129133111320221853337204925602740-6536.01655223699234212184
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating201.8416.9209.3200.5293.999.8101.0130.8205.4195.1170.3196.9247.4232.2198.4258.2-106.2296.7283.4299.4311.5207.9315.7190.3240.6249.8-579.9146.2190.376.5255.9159.9

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value-1828000000.0-2499000000.0-2378000000.0-1522000000.0-2328000000.0-1451000000.0-1746000000.0-2000000000.0-2601000000.0-3638000000.0-2632000000.0-2376000000.0-4022000000.0-1854000000.0-2411000000.0-3330000000.0-4897000000.0-2998000000.0-4204000000.0-2928000000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-276.6-361.1-325.3-200.0-284.2-147.0-163.5-171.5-216.0-294.8-207.4-191.5-327.8-158.2-208.0-292.1-416.8-231.3-314.4-214.3

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-340.0565-677.0225221-13.0-479.0-166.0206-1042.014240-789.01151133-103.0-336.0240
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-51.481.6-92.629.627.0-1.3-44.9-14.217.1-84.41.119.3-64.398.211.5-9.0-31.423.6

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value15417917122114245318830933418848517319828424428428035024334342934245140455649949502555558568478425529
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating23.325.923.429.017.345.917.626.527.715.238.213.916.124.221.124.926.234.523.633.041.732.542.737.552.345.54.344.347.243.142.635.731.838.7

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01711451531287211483126-84.017611288145230125181286237182292263359307219270260543346
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.012.412.710.45.79.26.810.8-7.215.410.58.714.122.112.217.227.122.017.126.623.331.726.116.920.319.440.625.3

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value16530516719217993153142175136140140131107
Percentage of NetIncomeLoss89.282.490.392.8143.2-87.789.597.9114.4106.2194.4122.8157.884.9
Percentage of InterestAndDividendIncomeOperating25.044.122.825.221.99.414.312.214.511.011.011.310.79.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments25.545.00.025.821.89.30.012.014.310.90.011.110.59.1

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:BusinessProcessing


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
Value292615166.02.07.09.07.010.08.04.08.010.0
Percentage of NetIncomeLoss15.77.08.17.74.8-1.94.16.24.67.811.13.59.67.9
Percentage of InterestAndDividendIncomeOperating4.43.82.12.10.70.20.70.80.60.80.60.30.70.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:BusinessProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, navi:ConsumerLending


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
Value9623410711087548879856565726650
Percentage of NetIncomeLoss51.963.257.853.169.6-50.951.554.555.650.890.363.279.539.7
Percentage of InterestAndDividendIncomeOperating14.533.814.614.510.65.58.26.87.15.35.15.85.44.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:ConsumerLending32.573.40.031.424.013.30.017.919.314.50.015.714.811.5

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


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
Value113112136137146119138128131127146143148141
Percentage of NetIncomeLoss61.130.373.566.2116.8-112.380.788.385.699.2202.8125.4178.3111.9
Percentage of InterestAndDividendIncomeOperating17.116.218.618.017.812.112.911.010.910.311.511.512.112.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments navi:FederalEducationLoansSegment32.231.20.034.931.920.20.017.517.016.00.018.218.819.0

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-73.0-67.0-91.0-71.0-60.0-82.0-80.0-74.0-48.0-66.0-79.0-79.0-91.0-94.0-47.0-134.0-80.0-34.0-20.0-34.0
Percentage of NetIncomeLoss-39.5-18.1-49.2-34.3-48.077.4-46.8-51.0-31.4-51.6-109.7-69.3-109.6-74.6-15.3-61.2-29.6-13.1-3.7-9.8
Percentage of InterestAndDividendIncomeOperating-11.0-9.7-12.4-9.3-7.3-8.3-7.5-6.3-4.0-5.3-6.2-6.4-7.4-8.0-4.0-10.3-6.0-2.5-1.5-2.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments us-gaap:AllOtherSegments-7300.00.00.0-7100.0-6000.0-2050.00.0-925.0-685.7-1100.00.0-790.0-1011.1-1566.7-1566.7-3350.00.0-1133.3-500.0-680.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


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
Value20651815-54.0-199.0193.0-22.0-8.0-68.0-26.0-48.019
Percentage of NetIncomeLoss10.817.69.77.2-43.2187.711.12.1-14.4-6.2-94.4-22.8-57.815.1
Percentage of InterestAndDividendIncomeOperating3.09.42.52.0-6.6-20.21.80.3-1.8-0.6-5.4-2.1-3.91.6
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdditionsSubtractionsForCoreToGaapAccounting-200.0-722.20.0-107.1385.71421.40.0-17.6129.447.10.0144.4266.7-111.8

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value20651815-54.0-199.0193.0-22.0-8.0-68.0-26.0-48.0194724-11.0-19.01773-29.0
Percentage of NetIncomeLoss10.817.69.77.2-43.2187.711.12.1-14.4-6.2-94.4-22.8-57.815.1-56.013.6-9.8-21.611.731.7-23.2
Percentage of InterestAndDividendIncomeOperating3.09.42.52.0-6.6-20.21.80.3-1.8-0.6-5.4-2.1-3.91.64.12.1-1.0-1.91.77.0-2.8
Percentage of InterestAndDividendIncomeOperating navi:EliminationsAndReconcilingItems navi:AdjustmentsForCoreToGaapAccounting142.9464.30.088.25400.01809.10.0-20.0137.550.00.0173.3320.0-211.10.0800.0-275.0-316.70.0521.4-96.7

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01721451531287211483126-84.017611288145230125181286237182292263359307219270260542346
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.112.412.710.45.79.26.810.8-7.215.410.58.714.122.112.217.227.122.017.126.623.331.726.116.920.319.440.525.3

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:Parent


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01721451531287211483126-84.017611288146230125181286237182292264359307219269260543346
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.7100.0100.0100.0100.0100.0100.0100.0100.4100.0100.0100.099.6100.0100.2100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.112.412.710.45.79.26.810.8-7.215.410.58.714.222.112.217.227.122.017.126.623.431.726.116.920.219.440.625.3
Percentage of InterestAndDividendIncomeOperating us-gaap:Parent0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value185370185207125-106.01721451531287211483126-84.017611288146230125181286237182292264359307219269260543346
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.7100.0100.0100.0100.0100.0100.0100.0100.4100.0100.0100.099.6100.0100.2100.0
Percentage of InterestAndDividendIncomeOperating28.053.525.327.215.3-10.716.112.412.710.45.79.26.810.8-7.215.410.58.714.222.112.217.227.122.017.126.623.431.726.116.920.219.440.625.3
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value3.010.03.04.02.09.05.03.05.0123.04.05.0139.07.05.0144.04.06.0122.04.011126.05.010.01810.08.010.019
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value133428851530152624079851079152524732408216124433035272123002943-1136.0301129133111320221853337204925602740-6536.01655223699234212184
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating201.8416.9209.3200.5293.999.8101.0130.8205.4195.1170.3196.9247.4232.2198.4258.2-106.2296.7283.4299.4311.5207.9315.7190.3240.6249.8-579.9146.2190.376.5255.9159.9

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302014-06-302014-03-312013-06-302013-03-31
Value-1828000000.0-2499000000.0-2378000000.0-1522000000.0-2328000000.0-1451000000.0-1746000000.0-2000000000.0-2601000000.0-3638000000.0-2632000000.0-2376000000.0-4022000000.0-1854000000.0-2411000000.0-3330000000.0-4897000000.0-2998000000.0-4204000000.0-2928000000.0
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-276.6-361.1-325.3-200.0-284.2-147.0-163.5-171.5-216.0-294.8-207.4-191.5-327.8-158.2-208.0-292.1-416.8-231.3-314.4-214.3

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt

us-gaap:RepaymentsOfLongTermDebt


Repayments
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.01.071810130.090730141787127616797549251567
Percentage of RepaymentsOfLongTermDebt100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value27293031313135363739404143424342454647495154585861636062636465656668
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2001000.0650.0335771301261071250.0165165110180200175200170175300300168167652002000.0201199
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-31
Value583365406456867100214121704
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value57536557735651564145
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

navi:PrivateEducationLoans


Allowance

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Allowance

navi:PrivateEducationLoans


Allowance

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Allowance

navi:PrivateEducationLoans


Allowance

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Allowance

navi:PrivateEducationLoans


Allowance

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Allowance

Allowance

navi:PrivateEducationLoans


Allowance

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Allowance

Asset

us-gaap:OperatingSegments


Asset

us-gaap:OperatingSegments, navi:BusinessProcessing


Asset

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Asset

navi:PrivateEducationLoans


Average

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Average

Cash

us-gaap:OperatingSegments


Cash

us-gaap:OperatingSegments, navi:ConsumerLending


Cash

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Cash

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Cash

Change

us-gaap:CrossCurrencyInterestRateContract


Change

us-gaap:InterestRateSwap


Change

navi:PrivateEducationLoans


Charge

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Charge

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Core

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting, navi:NetImpactOfGoodwillAndAcquiredIntangibles


Core

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting, navi:NetImpactOfDerivativeAccounting


Core

navi:ConsolidationLoans, us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Financing

navi:RehabLoans, us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Financing

navi:StaffordLoans, us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Financing

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Financing

navi:PrivateEducationLoans


Financing

Goodwill

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Goodwill

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Goodwill

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting, navi:NetImpactOfGoodwillAndAcquiredIntangibles


Goodwill

Mark

Net

navi:PrivateEducationLoans


Net

navi:PrivateEducationLoans, navi:LoansReceivableForPartiallyChargedOffLoans


Net

navi:PrivateEducationLoans


Net

navi:PrivateEducationLoans


Net

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Net

Non

Non

Noninterest

Other

us-gaap:OperatingSegments


Other

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Other

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Other

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Other

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Other

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Other

Percentage

Proceeds

Remaining

navi:PrivateEducationLoans


Remaining

Reversal

navi:PrivateEducationLoans


Reversal

Sale

Servicing

us-gaap:OperatingSegments


Servicing

us-gaap:OperatingSegments, navi:ConsumerLending


Servicing

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Servicing

Shares

Unallocated

us-gaap:OperatingSegments


Unallocated

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Unallocated

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10.0263.00.00.0127.03.02.0261.03.01.0481.02.04.02211165.0111.04.08.0357.08.02250209.06842
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation us-gaap:StatementEquityComponents

us-gaap:Parent


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10.0263.00.00.0127.03.02.0261.03.01.0481.02.04.02211165.0111.04.08.0357.08.02250209.06842
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value10.0263.00.00.0127.03.02.0261.03.01.0481.02.04.02211165.0111.04.08.0357.08.02250209.06842
Percentage of AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities

us-gaap:AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value-31.0-191.0-14.01317559161651816041360114158
Percentage of AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value40413772608710611795113117161-92.0-89.0103109136-151.0-136.0-130.0145159157161520198184173182241254223239259
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet us-gaap:FinancingReceivablePortfolioSegment

navi:PrivateEducationLoans


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value353528634868971088794102148-75.0-78.08896122-137.0-130.0-112.0127144142-148.0509190
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet87.585.475.787.580.078.291.592.391.683.287.291.981.587.685.488.189.790.795.686.287.690.690.4-91.997.996.0

us-gaap:AllowanceForLoanAndLeaseLossesWriteoffsNet us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Allowance
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302014-12-312014-09-30
Value5.06.09.09.012199.09.07.0171313-17.0-11.01310.013-13.0-96.01313-16.03312-130.014
Percentage of AllowanceForLoanAndLeaseLossesWriteoffsNet12.514.624.312.520.021.88.57.77.415.011.18.118.512.412.69.29.68.670.6-10.09.0-10.121.07.5-70.78.1

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1 us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1

us-gaap:CrossCurrencyInterestRateContract, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-102.0-40.0-165.0-154.0-54.0101-163.0138-20.0275328257-129.0-88.0-262.0-442.0-162.0485-81.0252-306.023935-340.0988443830-17.07.0
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateSwap, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Change
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-21.02127454-27.0-429.099-81.0-200.0-117.0-194.0666622513139-38.061474175-68.0-280.0251-234.0252-130.0-145.0125-112.0-53.0
Percentage of ChangeInUnrealizedGainLossOnHedgedItemInFairValueHedge120.6-530.0-44.8-35.150.0-424.8-60.7-58.71000.0-433.3-366.0235.725.7-174.4-148.9-14.98.6-37.797.7-216.0-27.091.5105.0-668.6-74.1-13.2-32.715.1658.8-757.1

us-gaap:CommonStockDividendsPerShareCashPaid

us-gaap:CommonStockDividendsPerShareCashPaid


Common
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value0.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.160.16
Percentage of CommonStockDividendsPerShareCashPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet

us-gaap:CrossCurrencyInterestRateContract, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1177016614660-91.0158-130.041-12.0-84.0-19.0-283.07684261459
Percentage of DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateSwap, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value22-197.0-74.0-49.015410-93.084186104184-63.0-71.0-188.0-120.0-28.018
Percentage of DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet18.8-281.4-44.6-33.625.0-450.5-58.9-64.6453.7-866.7-219.0331.625.1-247.4-142.9-10.73.9

us-gaap:DerivativeNetHedgeIneffectivenessGainLoss us-gaap:DerivativeInstrumentRisk, us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:DerivativeNetHedgeIneffectivenessGainLoss

us-gaap:CrossCurrencyInterestRateContract, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value15301.0-8.06.010.0-5.08.02115-31.09.0-26.0-53.0-4.0-1.017
Percentage of DerivativeNetHedgeIneffectivenessGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestRateSwap, us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.0150.05.0-12.0-19.06.03.0-14.0-13.0-10.03.0-5.0371111-20.0
Percentage of DerivativeNetHedgeIneffectivenessGainLoss6.750.00.0-62.5-200.0-190.0-120.037.5-66.7-86.732.333.319.2-69.8-275.0-1100.0-117.6

us-gaap:DirectOperatingCosts

us-gaap:DirectOperatingCosts


Direct
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value186195181170161176178187179184189184129195194183175176193177175186185174170170165147154294249198186173
Percentage of DirectOperatingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DirectOperatingCosts us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Direct
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value186195181170161176178187179184189184129195194183175176193177175186185174170170
Percentage of DirectOperatingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DirectOperatingCosts us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:BusinessProcessing


Direct
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value929174695754505456555759545956494439
Percentage of DirectOperatingCosts49.546.740.940.635.430.728.128.931.329.930.232.141.930.328.926.825.122.2

us-gaap:OperatingSegments, navi:ConsumerLending


Direct
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value394137373439394434383638395645393735
Percentage of DirectOperatingCosts21.021.020.421.821.122.221.923.519.020.719.020.730.228.723.221.321.119.9

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Direct
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value556370647083898989919687368071777986
Percentage of DirectOperatingCosts29.632.338.737.643.547.250.047.649.749.550.847.327.941.036.642.145.148.9

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value27293031313135363739404242424343454647495154585861636062636465656668
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:Parent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value27293031313135363739404242424343454647495154585861636062636465656668
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value27293031313135363739404242424343454647495154585861636062636465656668
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsSharebasedCompensationStock

us-gaap:DividendsSharebasedCompensationStock


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value02000000.0-1000000.01000000.002000000.00-1000000.01000000.04000000.00002000000.0-1000000.01000000.002000000.01000000.001000000.03000000.0-1000000.0002000000.01000000.001000000.01000000.00001000000.0
Percentage of DividendsSharebasedCompensationStock0.0100.0100.0100.00.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.00.00.00.0100.0

us-gaap:DividendsSharebasedCompensationStock us-gaap:StatementEquityComponents

us-gaap:Parent


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value02000000.0-1000000.01000000.002000000.00-1000000.01000000.04000000.00002000000.0-1000000.01000000.002000000.01000000.001000000.03000000.0-1000000.0002000000.01000000.001000000.01000000.00001000000.0
Percentage of DividendsSharebasedCompensationStock0.0100.0100.0100.00.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.00.00.00.0100.0

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value02000000.0-1000000.01000000.002000000.00-1000000.01000000.04000000.00002000000.0-1000000.01000000.002000000.01000000.001000000.03000000.0-1000000.0002000000.01000000.001000000.01000000.00001000000.0
Percentage of DividendsSharebasedCompensationStock0.0100.0100.0100.00.0100.00.0100.0100.0100.00.00.00.0100.0100.0100.00.0100.0100.00.0100.0100.0100.00.00.0100.0100.00.0100.0100.00.00.00.0100.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1126316013848-107.0136-157.012-41.0-114.0-48.0-308.0566122741586-562.058-302.0367-264.048308-842.0-419.0-748.0877.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings us-gaap:DerivativeInstrumentRisk

us-gaap:CrossCurrencyInterestRateContract


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value1116215913747-112.0134-160.010.0-45.0-116.0-52.0-314.0495323143089-557.064-293.0358-258.0-5.0306-840.0-410.0-738.077-10.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings99.198.499.499.397.9104.798.5101.983.3109.8101.8108.3101.987.586.9101.8103.6103.599.1110.397.097.597.7-10.499.499.897.998.788.5-142.9

us-gaap:InterestRateSwap


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value1.01.01.01.01.04.02.02.02.02.01.03.03.03.04.01.0-7.02.0-1.0-2.0-5.011-6.0405.01.0-6.0-7.013
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings0.91.60.60.72.1-3.71.5-1.316.7-4.9-0.9-6.2-1.05.46.60.4-1.72.30.2-3.41.73.02.383.31.6-0.11.40.914.9

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings us-gaap:IncomeStatementLocation

us-gaap:GainLossOnDerivativeInstruments


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1.01.01.01.01.05.02.03.02.04.0-82.0-16.0-277.08391257444115-534.081-282.0384-253.050306-843.0-424.0-755.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings0.91.60.60.72.1-4.71.5-1.916.7-9.871.933.389.9148.2149.2113.2107.0133.795.0139.793.4104.695.8104.299.4100.1101.2100.9

us-gaap:InterestExpense


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1116215913747-112.0134-160.010.0-45.0-32.0-32.0-31.0-27.0-30.0-30.0-29.0-29.0-28.0-23.0-20.0-17.0-11.0-2.02.01.05.07.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings99.198.499.499.397.9104.798.5101.983.3109.828.166.710.1-48.2-49.2-13.2-7.0-33.75.0-39.76.6-4.64.2-4.20.6-0.1-1.2-0.9

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-6.0-7.0-8.0-9.0-13.0-22.0-25.0-29.0-33.0-34.0-34.0-34.0-33.0-30.0-33.0-34.0-32.0-33.0-31.0-24.0-21.0-18.0-12.0-6.00.01.04.07.01516
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements us-gaap:DerivativeInstrumentRisk

us-gaap:CrossCurrencyInterestRateContract


Fair
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-6.0-7.0-8.0-8.0-13.0-21.0-25.0-29.0-32.0-33.0-32.0-32.0-31.0-27.0-30.0-30.0-29.0-29.0-28.0-23.0-20.0-17.0-11.0-3.02.01.04.07.01517
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements100.0100.0100.088.9100.095.5100.0100.097.097.194.194.193.990.090.988.290.687.990.395.895.294.491.750.00.0100.0100.0100.0100.0106.2

us-gaap:InterestRateSwap


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value0.0-1.00.0-1.00.00.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-1.0-2.0-2.00.00.0-1.0-1.0-3.0-1.01.00.01.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements-0.011.1-0.04.5-0.0-0.03.02.92.92.93.03.33.02.93.16.16.5-0.0-0.05.68.350.00.0100.00.014.3

us-gaap:OtherContract


Fair
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value0.00.00.00.00.00.00.00.0-1.0-1.0-1.0-2.0-2.0-3.0-2.0-2.0-1.0-1.0-1.00.0-1.0-1.0-1.00.0-1.00.0-1.0
Percentage of FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.02.92.93.06.76.18.86.26.13.24.24.8-0.016.70.0-100.00.0-14.30.0-6.2

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

navi:PrivateEducationLoans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value222523282828313334
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

navi:PrivateEducationLoans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value3.05.05.0253.02.0242.03.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableChangeInPresentValueExpenseReversal

us-gaap:FinancingReceivableChangeInPresentValueExpenseReversal


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value202524462217
Percentage of FinancingReceivableChangeInPresentValueExpenseReversal100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableChangeInPresentValueExpenseReversal us-gaap:FinancingReceivablePortfolioSegment

navi:PrivateEducationLoans


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value202524462217371717
Percentage of FinancingReceivableChangeInPresentValueExpenseReversal100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2

us-gaap:FinancingReceivableModificationsPreModificationRecordedInvestment2


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value294048517095106113123133126163137170198200203215235254311368386371375472
Percentage of FinancingReceivableModificationsPreModificationRecordedInvestment2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1

us-gaap:FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value4.05.08.07.0112126252732373533373743475459676673909897118142134125148
Percentage of FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown

us-gaap:FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value27262143355882887580100123606066809410610086941021021071311191149597134
Percentage of FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax

us-gaap:GainLossOnDerivativeInstrumentsNetPretax


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-10.036-1.0-2.0-30.0-223.0434.0-32.07.0-48.02.0-40.0483825-25.0-16.06.0137-28.01.09320-18.071-22.010861-8.0-128.0-127.018-31.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax us-gaap:DerivativeInstrumentRisk, us-gaap:HedgingDesignation

us-gaap:InterestRateFloor, us-gaap:Nondesignated


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-3.014-4.01.0-24.0-182.034-8.0-49.02.0-24.06.010.0233815-5.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax30.038.9400.0-50.080.081.679.1-200.0153.128.650.0300.0-25.047.9100.060.020.0

us-gaap:InterestRateSwap, us-gaap:Nondesignated


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-7.0223.0-3.0-6.0-41.09.012166.012-8.0-4.022-8.06.0-3.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax70.061.1-300.0150.020.018.420.9300.0-50.085.7-25.0-400.010.045.8-21.124.012.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax us-gaap:DerivativeInstrumentsGainLossByHedgingRelationship, us-gaap:HedgingDesignation

us-gaap:FairValueHedging, us-gaap:DesignatedAsHedgingInstrument


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value16451.0-3.0-6.0-9.01.0117.02.0-41.012-31.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax-160.0125.0-100.0150.020.04.02.3275.0-21.928.685.4600.077.5

us-gaap:GainLossOnDerivativeInstrumentsNetPretax us-gaap:HedgingDesignation

us-gaap:Nondesignated


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-10.036-1.0-2.0-30.0-223.0434.0-32.07.0-7.0-10.0-9.0643115-22.0
Percentage of GainLossOnDerivativeInstrumentsNetPretax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.014.6-500.022.5133.381.660.088.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax us-gaap:IncomeStatementLocation

navi:InterestExpenseAndDerivativeInstrumentsHedgingActivities


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6.0810.0-5.0-36.0-232.04415-25.09.0-48.02.0-40.048
Percentage of GainLossOnDerivativeInstrumentsNetPretax-60.0225.0-0.0250.0120.0104.0102.3375.078.1128.6100.0100.0100.0100.0

us-gaap:GainLossOnRepurchaseOfDebtInstrument

us-gaap:GainLossOnRepurchaseOfDebtInstrument


Gain
Period End2021-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-06-302015-03-31
Value-12.0-14.00.0441528-1.0-7.0-2.0-1.00.01.00.00.00.00.0
Percentage of GainLossOnRepurchaseOfDebtInstrument100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.00.00.0

us-gaap:GainLossOnRepurchaseOfDebtInstrument us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Gain
Period End2021-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-06-302015-03-31
Value-12.0-14.00.0321518-1.0-7.0-2.0-1.00.01.00.00.00.00.0
Percentage of GainLossOnRepurchaseOfDebtInstrument100.0100.00.072.7100.064.3100.0100.0100.0100.00.0100.00.00.00.00.0

us-gaap:GainLossOnRepurchaseOfDebtInstrument us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Gain
Period End2021-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302016-12-312016-09-302016-06-302016-03-312015-06-302015-03-31
Value-12.0-14.00.0321518-1.0-7.0-2.0-1.00.01.00.00.00.00.0
Percentage of GainLossOnRepurchaseOfDebtInstrument100.0100.00.072.7100.064.3100.0100.0100.0100.00.0100.00.00.00.00.0

us-gaap:GainLossOnSalesOfLoansNet

us-gaap:GainLossOnSalesOfLoansNet


Gain
Period End2021-06-302021-03-312019-12-312019-09-302019-06-30
Value2.0760.00.016
Percentage of GainLossOnSalesOfLoansNet100.0100.00.00.0100.0

us-gaap:GainLossOnSalesOfLoansNet us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Gain
Period End2021-06-302021-03-312019-12-312019-09-302019-06-30
Value2.0890.00.016
Percentage of GainLossOnSalesOfLoansNet100.0117.10.00.0100.0

us-gaap:GainLossOnSalesOfLoansNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:ConsumerLending


Gain
Period End2021-06-302021-03-312019-12-312019-09-302019-06-30
Value2.0890.00.016
Percentage of GainLossOnSalesOfLoansNet100.0117.10.00.0100.0

us-gaap:GainLossOnSalesOfLoansNet us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Gain
Period End2021-06-302021-03-31
Value0.0-13.0
Percentage of GainLossOnSalesOfLoansNet0.0-17.1

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Gain
Period End2021-06-302021-03-31
Value0.0-13.0
Percentage of GainLossOnSalesOfLoansNet0.0-17.1

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value47-80.0-6.0-61.0124-79.045-101.053-75.0106-102.0139-18.0119-62.032-60.0124-48.021-71.021-94.046-148.0211-73.046-109.0-6.03261-19.0
Percentage of IncreaseDecreaseInAccruedInterestReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInInterestPayableNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value18-45.022-59.0-6.0-70.021-88.028-57.054-82.0119-33.044-50.082-65.067-34.020-145.051-86.053-60.081-76.037-69.038-67.04.02.0
Percentage of IncreaseDecreaseInInterestPayableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value-15000000.0-111000000.0-25000000.09000000.0-110000000.0-51000000.0-58000000.015000000.0-86000000.0-62000000.0-127000000.0
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2.09.0-12.056-45.0-51.0-13.057-32.0-145.0128-66.09.0-40.060-88.0-27.050-90.06088-64.0-5.0-174.0-24.064-76.0-412.042611-2.0113-40.0-158.0
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements


Incremental
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2000000.02000000.001000000.01000000.003000000.03000000.03000000.004000000.04000000.05000000.005000000.05000000.07000000.01000000.06000000.06000000.04000000.0-1000000.06000000.06000000.07000000.008000000.08000000.08000000.01000000.09000000.08000000.07000000.0
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.00.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value6616927317618199871068116612041234126912411227117211591140107010151028103910281051105710771064109711271132117512961333134013371366
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value64767871274482099810811181122012501283125612421181115811371066100910181025998972956973960994
Percentage of InterestAndDividendIncomeOperating97.998.097.497.8100.1101.1101.2101.3101.3101.3101.1101.2101.2100.899.999.799.699.499.098.797.192.590.490.390.290.6

us-gaap:InterestAndDividendIncomeOperating us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:ConsumerLending


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value295319328350362406417441441448456459445433432446387375
Percentage of InterestAndDividendIncomeOperating44.646.144.946.044.241.139.037.836.636.335.937.036.336.937.339.136.236.9

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value351359383393457588658732772796815787788742723689677633
Percentage of InterestAndDividendIncomeOperating53.151.952.451.655.859.661.662.864.164.564.263.464.263.362.460.463.362.4

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Interest
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value1.01.01.01.04.06.08.07.06.01210.09.06.04.04.08.07.05.03.03.02.03.01.03.03.03.03.03.04.05.03.04.05.0
Percentage of InterestAndDividendIncomeOperating0.20.10.10.10.40.60.70.60.50.90.80.70.50.30.40.70.70.50.30.30.20.30.10.30.30.30.30.30.30.40.20.30.4

us-gaap:InterestAndDividendIncomeOperating us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-10.0-9.0-13.0-14.0-14.0-14.0-17.0-17.0-17.0-17.0-17.0-18.0-18.0-17.0-14.0-13.0-14.0-14.0-15.0-14.0-26.0
Percentage of InterestAndDividendIncomeOperating-1.5-1.3-1.8-1.8-1.7-1.4-1.6-1.5-1.4-1.4-1.3-1.5-1.5-1.5-1.2-1.1-1.3-1.4-1.5-1.3-2.5

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value14141917-1.0-11.0-13.0-15.0-16.0-16.0-14.0-15.0-15.0-9.01.03.04.06.010.01430
Percentage of InterestAndDividendIncomeOperating2.12.02.62.2-0.1-1.1-1.2-1.3-1.3-1.3-1.1-1.2-1.2-0.80.10.30.40.61.01.32.9

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value24233231133.04.02.01.01.03.03.03.08.015161820252856
Percentage of InterestAndDividendIncomeOperating3.63.34.44.11.60.30.40.20.10.10.20.20.20.71.31.41.72.02.42.75.4

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value323450341322256178244248225209222221186242257250246233276306319375421430351458476484497581599592583554
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value283382312307285202260245228224227242207243248240238227272299298305330337254364
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss87.684.991.595.3111.3113.5106.698.8101.3107.2102.3109.5111.3100.496.596.096.797.498.697.793.481.378.478.472.479.5

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:ConsumerLending


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value15925617217914710715214312611911312712111811113010093
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss49.256.950.455.657.460.162.357.756.056.950.957.565.148.843.252.040.739.9

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value141144163157168126141136137138155153126161175148169162
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss43.732.047.848.865.670.857.854.860.966.069.869.267.766.568.159.268.769.5

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-17.0-18.0-23.0-29.0-30.0-31.0-33.0-34.0-35.0-33.0-41.0-38.0-40.0-36.0-38.0-37.0-27.0-26.0-25.0-27.0-26.0-24.0-23.0-24.0-25.0-27.0-27.0-26.0-27.0-17.0-13.0-12.0-6.0-8.0
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss-5.3-4.0-6.7-9.0-11.7-17.4-13.5-13.7-15.6-15.8-18.5-17.2-21.5-14.9-14.8-14.8-11.0-11.2-9.1-8.8-8.2-6.4-5.5-5.6-7.1-5.9-5.7-5.4-5.4-2.9-2.2-2.0-1.0-1.4

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value1444-3.0-9.0-17.0-20.0-12.0-3.0-6.0-12.0-13.0-15.0-14.0-16.0-11.0-11.0-11.0-11.0-15.0-14.0-26.0
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss4.39.8-0.9-2.8-6.6-11.2-4.9-1.2-2.7-5.7-5.9-6.8-7.5-6.6-4.3-4.4-4.5-4.7-5.4-4.6-8.2

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value40682915-29.0-24.0-16.03.0-3.0-15.0-5.0-21.0-21.0-1.09.010.08.06.04.07.021
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss12.415.18.54.7-11.3-13.5-6.61.2-1.3-7.2-2.3-9.5-11.3-0.43.54.03.32.61.42.36.6

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value26243224-12.0-4.0-4.06.03.0-3.08.0-6.0-7.01520211917192147
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss8.05.39.47.5-4.7-2.2-1.62.41.3-1.43.6-2.7-3.86.27.88.47.77.36.96.914.7

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:ValuationTechnique

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting, navi:NetImpactOfDerivativeAccounting


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value40682915-29.0-24.0-16.03.0-3.0-15.0-5.0-21.0-21.0-1.09.010.08.06.04.07.021
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss12.415.18.54.7-11.3-13.5-6.61.2-1.3-7.2-2.3-9.5-11.3-0.43.54.03.32.61.42.36.6

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value14214913512111712411612012512812712112513413812812413012112212413212310611512391109116142124128128125
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:MinorityInterestPeriodIncreaseDecrease

us-gaap:MinorityInterestPeriodIncreaseDecrease


Minority
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value-3000000.03000000.00-2000000.01000000.01000000.0-2000000.0-15000000.0
Percentage of MinorityInterestPeriodIncreaseDecrease100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:MinorityInterestPeriodIncreaseDecrease us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302020-12-312020-09-302020-06-302019-12-312019-09-302019-06-302019-03-31
Value-3000000.03000000.00-2000000.01000000.01000000.0-2000000.0-15000000.0
Percentage of MinorityInterestPeriodIncreaseDecrease100.0100.00.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense

us-gaap:NoninterestExpense


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value259270275240219261244259253264264279209291294244236244259240236251240231257234227211274396334273270248
Percentage of NoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestExpense us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value254265269235214256237253242257256256203282288238230238245228230247235228225230
Percentage of NoninterestExpense98.198.197.897.997.798.197.197.795.797.397.091.897.196.998.097.597.597.594.695.097.598.497.998.787.598.3

us-gaap:NoninterestExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:BusinessProcessing


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value929174695754505456555759545956494439
Percentage of NoninterestExpense35.533.726.928.826.020.720.520.822.120.821.621.125.820.319.020.118.616.0

us-gaap:OperatingSegments, navi:ConsumerLending


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value394137373439394434383638395645393735
Percentage of NoninterestExpense15.115.213.515.415.514.916.017.013.414.413.613.618.719.215.316.015.714.3

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value556370647083898989919687368071777986
Percentage of NoninterestExpense21.223.325.526.732.031.836.534.435.234.536.431.217.227.524.131.633.535.2

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value68708865538059666373677274871036261695861626760635864655154203108474075
Percentage of NoninterestExpense26.325.932.027.124.230.724.225.524.927.725.425.835.429.935.025.425.828.322.425.426.326.725.027.322.627.428.624.219.751.332.317.214.830.2

us-gaap:NoninterestExpense us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value5.05.06.05.05.05.07.06.0117.08.0236.09.06.06.06.06.014126.0
Percentage of NoninterestExpense1.91.92.22.12.31.92.92.34.32.73.08.22.93.12.02.52.52.55.45.02.5

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value5.05.06.05.05.05.07.06.0117.08.0236.09.06.06.06.06.014126.0
Percentage of NoninterestExpense1.91.92.22.12.31.92.92.34.32.73.08.22.93.12.02.52.52.55.45.02.5

us-gaap:NoninterestIncome

us-gaap:NoninterestIncome


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value176304168177133-48.02191962222191492051362112192631621522253111231602711812012491722882751707669490
Percentage of NoninterestIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NoninterestIncome us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value186281169179163175176192242210203196166179181237185181178179176176176166215177
Percentage of NoninterestIncome105.792.4100.6101.1122.6-364.680.498.0109.095.9136.295.6122.184.882.690.1114.2119.179.157.6143.1110.064.991.7107.071.1

us-gaap:NoninterestIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:BusinessProcessing


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value13012593906457596665686664657360555344
Percentage of NoninterestIncome73.941.155.450.848.1-118.826.933.729.331.144.331.247.834.627.420.932.728.9

us-gaap:OperatingSegments, navi:ConsumerLending


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value5.0901.01.01.02.03.03.0193.03.03.03.03.04.03.0-1.04.0
Percentage of NoninterestIncome2.829.60.60.60.8-4.21.41.58.61.42.01.52.21.41.81.1-0.62.6

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value6166798794113126120122119116127102102114178128128
Percentage of NoninterestIncome34.721.747.049.270.7-235.457.561.255.054.377.962.075.048.352.167.779.084.2

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Noninterest
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value-10.0-4.01.04.03.0-12.03.03620182.0-4.01.06.05.04.05.04.06.04.03.0213.03.04.07.08.08.03.0-7.06.013
Percentage of NoninterestIncome-5.7-2.40.63.0-6.2-5.51.516.29.112.11.0-2.90.52.71.92.53.31.81.93.31.97.71.71.51.64.12.82.91.8-9.28.72.7

us-gaap:NoninterestIncome us-gaap:ConsolidationItems, us-gaap:StatementScenario

navi:EliminationsAndReconcilingItems, navi:AdditionsSubtractionsForCoreToGaapAccounting


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value16473122-42.0-227.03910.0-17.06.0-46.03.0-37.0475847-4.0-12.066153-6.0
Percentage of NoninterestIncome9.115.518.512.4-31.6472.917.85.1-7.72.7-30.91.5-27.222.326.517.9-2.5-7.929.349.2-4.9

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-10.023-1.0-2.0-30.0-223.0434.0-20.09.0-54.09.0-30.0323826-23.0-29.047132-53.0
Percentage of NoninterestIncome-5.77.6-0.6-1.1-22.6464.619.62.0-9.04.1-36.24.4-22.115.217.49.9-14.2-19.120.942.4-43.1

navi:EliminationsAndReconcilingItems, navi:ReclassificationsForCoreToGaapAccounting


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-26.0-24.0-32.0-24.0124.04.0-6.0-3.03.0-8.06.07.0-15.0-20.0-21.0-19.0-17.0-19.0-21.0-47.0
Percentage of NoninterestIncome-14.8-7.9-19.0-13.69.0-8.31.8-3.1-1.41.4-5.42.95.1-7.1-9.1-8.0-11.7-11.2-8.4-6.8-38.2

us-gaap:NoninterestIncome us-gaap:ConsolidationItems, us-gaap:StatementScenario, us-gaap:ValuationTechnique

navi:EliminationsAndReconcilingItems, navi:AdjustmentsForCoreToGaapAccounting, navi:NetImpactOfDerivativeAccounting


Noninterest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value-10.023-1.0-2.0-30.0-223.0434.0-20.09.0-54.09.0-30.0323826-23.0-29.047132-53.0
Percentage of NoninterestIncome-5.77.6-0.6-1.1-22.6464.619.62.0-9.04.1-36.24.4-22.115.217.49.9-14.2-19.120.942.4-43.1

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax

us-gaap:OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-5.0270.04.0-28.0-209.037-35.0-110.0-57.0
Percentage of OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax100.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax us-gaap:IncomeStatementLocation

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax

us-gaap:InterestExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302019-12-312019-09-302019-06-30
Value-22.0-21.0-20.0-19.0-11.04.09.013
Percentage of OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax

us-gaap:OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax


Other
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value23-17.0-209.033-44.0-123.0-70.0
Percentage of OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoninterestExpense

us-gaap:OtherNoninterestExpense


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value11011013411196127119131116128126134761411211101061081241061061151121221101071238695224181129116110
Percentage of OtherNoninterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsForProceedsFromOtherInvestingActivities


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-16.0-22.0-38.0122.0114-2.025-5.0-27.0-17.055299.017-110.0195-15.0-39.0-47.0120-69.0-177.02842-24.025-40.011-119.0-88.059-50.0-65.0
Percentage of PaymentsForProceedsFromOtherInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireLoansHeldForInvestment

us-gaap:PaymentsToAcquireLoansHeldForInvestment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value13161734116813032491921196414778961074102710707348211028632499879883866264615377961106100483095171369942197586616115191559
Percentage of PaymentsToAcquireLoansHeldForInvestment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromAccountsReceivableSecuritization

us-gaap:ProceedsFromAccountsReceivableSecuritization


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2143182823532329130119761770128623532510186217011513393014162934217119191895100522461545
Percentage of ProceedsFromAccountsReceivableSecuritization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt

us-gaap:ProceedsFromIssuanceOfUnsecuredDebt


Proceeds
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.04950.0682
Percentage of ProceedsFromIssuanceOfUnsecuredDebt0.0100.00.0100.0

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities

us-gaap:ProceedsFromPaymentsForOtherFinancingActivities


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value157-34.04911-11.0-241.061-101.0-35.0-114.0-85.0-31.013-59.056-96.081-120.0-253.0-138.034113-134.028-198.059323-230.0169-11.0-113.0-16.0-408.0-358.0
Percentage of ProceedsFromPaymentsForOtherFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromRepaymentsOfCommercialPaper us-gaap:FinancialInstrument

us-gaap:ProceedsFromRepaymentsOfCommercialPaper

us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivables


Proceeds
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value-466.0-1735.0-667.0-589.0-940.02811034136-727.0-1350.0752-136.0-1601.0-1848.0-999.0
Percentage of ProceedsFromRepaymentsOfCommercialPaper100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfLoansHeldForInvestment

us-gaap:ProceedsFromSaleOfLoansHeldForInvestment


Proceeds
Period End2021-06-302021-03-312019-12-31
Value0.015880.0
Percentage of ProceedsFromSaleOfLoansHeldForInvestment0.0100.00.0

us-gaap:ProvisionForLoanAndLeaseLosses

us-gaap:ProvisionForLoanAndLeaseLosses


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value-1.0-87.02.014449550646876858511287109105105107102106110111115123198125138140165185190207201241
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value-1.0-87.02.014449550646876868511287109105105107102106110111115123198125
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0101.2100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanAndLeaseLosses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, navi:ConsumerLending


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-1.0-87.02.010.04189435660687675727797959595
Percentage of ProvisionForLoanAndLeaseLosses100.0100.0100.071.493.293.786.087.588.289.589.488.264.388.589.090.590.588.8

us-gaap:OperatingSegments, navi:FederalEducationLoansSegment


Provision
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.04.03.06.07.08.08.08.010.010.04010.01210.010.012
Percentage of ProvisionForLoanAndLeaseLosses0.028.66.86.314.012.511.810.511.811.835.711.511.09.59.511.2

us-gaap:ProvisionForLoanLossesExpensed

us-gaap:ProvisionForLoanLossesExpensed


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.0-87.02.014449550646876
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForLoanLossesExpensed us-gaap:FinancingReceivablePortfolioSegment

navi:PrivateEducationLoans


Provision
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.0-87.02.010.0418941566068
Percentage of ProvisionForLoanLossesExpensed100.0100.0100.071.493.293.782.087.588.289.5

us-gaap:ProvisionForLoanLossesExpensed us-gaap:LoansInsuredOrGuaranteedByGovernmentAuthorities

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Provision
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.04.03.06.07.08.08.08.0
Percentage of ProvisionForLoanLossesExpensed0.028.66.86.314.012.511.810.5

us-gaap:RepaymentsOfAccountsReceivableSecuritization

us-gaap:RepaymentsOfAccountsReceivableSecuritization


Repayments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value2731284629733174264630653486315531224508357936873123366829903739398732033396322733753228
Percentage of RepaymentsOfAccountsReceivableSecuritization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfUnsecuredDebt

us-gaap:RepaymentsOfUnsecuredDebt


Repayments
Period End2021-06-302021-03-312020-06-302020-03-31
Value704781.0718
Percentage of RepaymentsOfUnsecuredDebt100.0100.0100.0100.0

us-gaap:RestructuringCharges

us-gaap:RestructuringCharges


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value2.06.00.03.01.05.02.02.01.01.04.01.02.07.0290.00.0293.010.014612626122310.0
Percentage of RestructuringCharges100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RestructuringCharges us-gaap:ConsolidationItems

us-gaap:OperatingSegments


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value2.06.00.03.01.05.02.02.01.01.03.01.02.07.0
Percentage of RestructuringCharges100.0100.00.0100.0100.0100.0100.0100.0100.0100.075.0100.0100.0100.0

us-gaap:RestructuringCharges us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, us-gaap:AllOtherSegments


Restructuring
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312014-03-312013-03-31
Value2.06.00.03.01.05.02.02.01.01.03.01.02.07.02610.0
Percentage of RestructuringCharges100.0100.00.0100.0100.0100.0100.0100.0100.0100.075.0100.0100.0100.0100.0100.0

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation

us-gaap:SharesPaidForTaxWithholdingForShareBasedCompensation


Shares
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value600000.02200000.04125.0900280.0472880.0219330.0120480.02413600.096884.0175240.092369.03465100.0106120.0131370.0255880.01354300.0697630.01145000.0368440.0986270.0116570.0211830.0431170.01644800.0366980.0418430.01270500.02115500.0748070.0251570.03040800.02324600.0
Percentage of SharesPaidForTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodSharesNewIssues

us-gaap:StockIssuedDuringPeriodSharesNewIssues


Stock
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value600000.03600000.090689.02271600.0626010.0465700.0195880.04429500.0129830.0395620.0113170.05021100.0144490.0385680.0355800.02794500.0950960.01558500.0467010.02499600.0142500.0563110.0633170.03585200.0571220.0712710.01867800.04238200.01103000.0326790.04115400.04157800.0
Percentage of StockIssuedDuringPeriodSharesNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockAcquiredAverageCostPerShare

us-gaap:TreasuryStockAcquiredAverageCostPerShare


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value17.0212.2308.42014.610.1313.413.0611.4-1.2613.9014.5515.114.950.4713.9512.910.42-1.6314.5119.7620.49-0.1717.6216.8123.891.54022.1219.49
Percentage of TreasuryStockAcquiredAverageCostPerShare100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:TreasuryStockSharesAcquired us-gaap:StatementEquityComponents

us-gaap:TreasuryStockSharesAcquired

navi:CommonStockSharesOutstanding


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-01-272020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value118.20.07.70.020225.7618369.7039129.6170089.417244106.8815920.00.00.011107.36329212141319141215148.6886619.5135143.8622148.36837.6700950.09.09614410
Percentage of TreasuryStockSharesAcquired100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:ShareRepurchaseProgram

us-gaap:TreasuryStockValueAcquiredCostMethod

navi:OpenMarketShareRepurchases


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2001000.0650.03357713012610712535
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:ShareRepurchaseProgram, us-gaap:StatementEquityComponents

navi:OpenMarketShareRepurchases, us-gaap:Parent


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2001000.0650.03357713012610712535
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0

navi:OpenMarketShareRepurchases, us-gaap:TreasuryStock


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value2001000.0650.03357713012610712535
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStockValueAcquiredCostMethod us-gaap:StatementEquityComponents

navi:CommonStockSharesOutstanding


Treasury
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302017-06-302017-03-31
Value2001000.0650.033577130126107125950.0165165110
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0271.40.00.00.00.0

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment

us-gaap:WeightedAverageNumberDilutedSharesOutstandingAdjustment


Weighted
Period End2021-06-302021-03-312020-09-302020-06-302019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-31
Value2000000.02000000.01000000.01000000.03000000.03000000.03000000.04000000.04000000.05000000.05000000.05000000.07000000.06000000.06000000.04000000.06000000.06000000.07000000.08000000.08000000.08000000.09000000.08000000.07000000.0
Percentage of WeightedAverageNumberDilutedSharesOutstandingAdjustment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedMaturities


Asc

us-gaap:FixedMaturities, navi:SeniorUnsecuredDebt


Asc

us-gaap:FixedMaturities, us-gaap:SecuredDebt


Asc

navi:FederalAndState


Capital

navi:FederalAndState


Capital

navi:ConsumerLending


Cash

navi:FederalEducationLoansSegment


Cash

Decrease

Deferred

Deferred

Deferred

Deferred

Derivative

us-gaap:CrossCurrencyInterestRateContract


Derivative

us-gaap:InterestRateFloor


Derivative

us-gaap:InterestRateSwap


Derivative

us-gaap:StateAndLocalJurisdiction


Disallowed

us-gaap:StateAndLocalJurisdiction


Disallowed

Earning

navi:PrivateEducationLoans


Ending

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Ending

us-gaap:ChangeDuringPeriodFairValueDisclosure


Excess

Expected

navi:PrivateEducationLoans


Expected

Financing

navi:PrivateEducationLoans


Financing

us-gaap:FederalFamilyEducationLoanProgramFfelpGuaranteedLoans


Financing

us-gaap:VariableInterestEntityPrimaryBeneficiary


Interest

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:BeforeHedgeAccountingAdjustments


Interest

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:FFELPLoanABCPFacilities


Interest

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:FFELPLoanSecuritizations


Interest

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:HedgeAccountingAdjustments


Interest

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:PrivateEducationLoanABCPFacilities


Interest

us-gaap:VariableInterestEntityPrimaryBeneficiary, navi:PrivateEducationLoanSecuritizations


Interest

navi:PrivateEducationLoansTroubledDebtRestructuring, navi:CosignerLoan


Loans

navi:CosignerLoan


Loans

Loans

us-gaap:ChangeDuringPeriodFairValueDisclosure


Loans

us-gaap:FixedMaturities


Long

us-gaap:FixedMaturities, navi:SeniorUnsecuredDebt


Long

us-gaap:FixedMaturities, us-gaap:SecuredDebt


Long

navi:PrivateEducationLoansNonTroubledDebtRestructuring, navi:BelowSixFourZero, navi:Fico


Notes

navi:PrivateEducationLoansNonTroubledDebtRestructuring, navi:CosignerLoan, navi:Cosigners


Notes