NNI


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

Table of contents


us-gaap:ConsolidatedEntities
us-gaap:CommonStockValue
us-gaap:StatementClassOfStock

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasic
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareDiluted
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:EarningsPerShareBasicAndDiluted
us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

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

us-gaap:GainLossOnInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:GainsLossesOnExtinguishmentOfDebt

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

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

us-gaap:IncomeTaxesPaidNet

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

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

us-gaap:InterestPaidNet

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

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest
us-gaap:ConsolidationItems

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

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

us-gaap:ProfitLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents
dei:LegalEntity, us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByType
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:ProductOrService, us-gaap:StatementBusinessSegments
us-gaap:MajorCustomers
us-gaap:ProductOrService

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

us-gaap:Liabilities
us-gaap:ConsolidatedEntities

us-gaap:LiabilitiesAndStockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:ConsolidatedEntities

us-gaap:PropertyPlantAndEquipmentGross
us-gaap:PropertyPlantAndEquipmentByType
us-gaap:PropertyPlantAndEquipmentByType, us-gaap:StatementBusinessSegments
us-gaap:StatementBusinessSegments

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
us-gaap:StatementBusinessSegments

us-gaap:AmortizationOfIntangibleAssets

us-gaap:PropertyPlantAndEquipmentNet
us-gaap:StatementBusinessSegments

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

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:EquitySecuritiesFvNi
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

us-gaap:OtherAssets
us-gaap:ConsolidatedEntities

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

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:OperatingLeaseLiability

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:StockholdersEquity
us-gaap:ConsolidatedEntities

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:ConsolidatedEntities
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:ConsolidatedEntities
us-gaap:CommonStockValue
us-gaap:StatementClassOfStock

us-gaap:AdditionalPaidInCapital
us-gaap:ConsolidatedEntities

us-gaap:RetainedEarningsAccumulatedDeficit
us-gaap:ConsolidatedEntities

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax
us-gaap:ConsolidatedEntities

us-gaap:MinorityInterest
us-gaap:ConsolidatedEntities

us-gaap:StockIssuedDuringPeriodValueNewIssues
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue
us-gaap:StatementEquityComponents

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DepreciationDepletionAndAmortization

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:NetCashProvidedByUsedInOperatingActivities

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

us-gaap:ProfitLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:StatementEquityComponents

us-gaap:ShareBasedCompensation

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:NetCashProvidedByUsedInFinancingActivities
us-gaap:DebtInstrument, us-gaap:SubsequentEventType
us-gaap:RepaymentsOfLongTermDebt

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxAssetsNet

us-gaap:UnrecognizedTaxBenefits

us-gaap:DeferredTaxAssetsValuationAllowance
us-gaap:Ownership, us-gaap:SubsequentEventType
nni:CapitalInvestedInSubsidiary

nni:ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet

nni:DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet

nni:DerivativeMarketValueAndForeignCurrencyGainLoss
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

nni:DerivativeSettlementsExpenseIncome
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:IncomeStatementLocation
us-gaap:FinancingReceivablePortfolioSegment
nni:FinancingReceivableInterestIncomePercentage

nni:GainLossOnInvestmentsAndNotesReceivable

nni:GainsOnSaleOfStudentLoansAndDebtRepurchasesNet
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

nni:GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.

nni:IncreaseDecreaseInOperatingLeaseLiability

nni:IncreaseDecreaseInOperatingLeaseRightOfUseAsset

nni:InterestPayableIncreaseDecreaseDueToLikelihoodOfRepayment
us-gaap:ConsolidationItems
nni:IntersegmentExpenses
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems
nni:IntersegmentServicingRevenue
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

nni:LoanInterest
us-gaap:Ownership, us-gaap:SubsequentEventType
nni:NoncashContributionOfAssetBackedSecuritiesToSubsidiary

nni:NoncashDistributionsToNoncontrollingInterestHolders

nni:NoninterestIncomeExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

nni:OtherIncomeExpenseOther
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

nni:OtherIncomeMiscellaneous
us-gaap:CounterpartyName, us-gaap:Range, us-gaap:StatementScenario
nni:PaymentForContingentConsideration

nni:PaymentsToAcquireEquitySecuritiesFvNi
us-gaap:ConsolidationItems
nni:PercentOfIncomeBeforeTaxesAllocatedToIncomeTaxes

nni:ProceedsFromInvestmentsAndNotesReceivables

nni:ProceedsFromPaymentsToClearinghouse

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpense
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpenseNet
us-gaap:ConsolidationItems

nni:PurchaseSaleofFinancingReceivables
us-gaap:FinancingReceivablePortfolioSegment

nni:SecuritizationInterestPercent

nni:StudentLoanDiscountAccretion

us-gaap:AssetImpairmentCharges
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
dei:LegalEntity, us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByType
us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

us-gaap:ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset

us-gaap:ContractWithCustomerLiabilityRevenueRecognized
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DeconsolidationGainOrLossAmount
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:Depreciation

us-gaap:DepreciationAndAmortization
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation
us-gaap:DerivativeGainLossOnDerivativeNet
us-gaap:IncomeStatementLocation

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:DividendsCommonStockCash
us-gaap:StatementEquityComponents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:EquitySecuritiesFvNiRealizedGain
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:EquitySecuritiesFvNiRealizedLoss

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs
us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableSignificantSales

us-gaap:FinancingReceivableTransferToHeldForSaleAllowanceForCreditLossExpenseReversal
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:IncomeStatementLocation
us-gaap:GainLossOnDerivativeInstrumentsNetPretax
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:GainLossOnSaleOfNotesReceivable
us-gaap:StatementScenario, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:SubsequentEventType
us-gaap:Ownership, us-gaap:StatementScenario
us-gaap:GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome

us-gaap:GainLossOnSalesOfLoansNet
us-gaap:InvestmentType
us-gaap:ImpairmentOfInvestments
us-gaap:InvestmentType
us-gaap:IncomeLossFromEquityMethodInvestments

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInPayablesToCustomers

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

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

us-gaap:InterestPaid

us-gaap:InvestmentIncomeInterest

us-gaap:LaborAndRelatedExpense
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:LateFeeIncomeGeneratedByServicingFinancialAssetsAmount
us-gaap:ProductOrService
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:LoansAndLeasesReceivableCommitmentsToPurchaseOrSell
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:SubsequentEventType

us-gaap:NoncontrollingInterestDecreaseFromDeconsolidation
us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
us-gaap:StatementEquityComponents

us-gaap:NoninterestIncome

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax

us-gaap:OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax

us-gaap:OtherComprehensiveIncomeLossTax

us-gaap:OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax

us-gaap:OtherExpenses
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OtherInterestAndDividendIncome

us-gaap:PaymentsForProceedsFromOtherInvestingActivities

us-gaap:PaymentsOfDebtIssuanceCosts

us-gaap:PaymentsOfDividendsMinorityInterest

us-gaap:PaymentsToAcquireAvailableForSaleSecuritiesDebt
dei:LegalEntity, us-gaap:InvestmentType
us-gaap:PaymentsToAcquireBusinessesAndInterestInAffiliates
us-gaap:InvestmentType
us-gaap:BusinessAcquisition
us-gaap:PaymentsToAcquireBusinessesGross
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:PaymentsToAcquireEquityMethodInvestments

us-gaap:PaymentsToAcquireFinanceReceivables
us-gaap:Ownership, us-gaap:SubsequentEventType
us-gaap:PaymentsToAcquireInterestInSubsidiariesAndAffiliates

us-gaap:PaymentsToAcquireOtherInvestments

us-gaap:PaymentsToFundLongtermLoansToRelatedParties

us-gaap:PaymentsToMinorityShareholders

us-gaap:ProceedsFromCollectionOfFinanceReceivables

us-gaap:ProceedsFromCollectionOfRetainedInterestInSecuritizedReceivables

us-gaap:ProceedsFromIssuanceOfCommonStock

us-gaap:ProceedsFromIssuanceOfDebt

us-gaap:ProceedsFromMinorityShareholders
us-gaap:Ownership
us-gaap:Ownership, us-gaap:StatementScenario
us-gaap:Ownership, us-gaap:SubsequentEventType

us-gaap:ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities

us-gaap:ProceedsFromSaleOfFinanceReceivables

us-gaap:ProceedsFromSaleOfOtherInvestments

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

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

us-gaap:RepaymentsOfDebtAndCapitalLeaseObligations

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
dei:LegalEntity
us-gaap:SaleOfStockConsiderationReceivedOnTransaction
dei:LegalEntity, us-gaap:SubsequentEventType
dei:LegalEntity, us-gaap:Ownership
us-gaap:SaleOfStockPercentageOfOwnershipAfterTransaction
dei:LegalEntity, us-gaap:Ownership, us-gaap:StatementScenario
us-gaap:Ownership
us-gaap:Ownership, us-gaap:StatementScenario
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodValueConversionOfConvertibleSecurities

us-gaap:StockRepurchasedDuringPeriodValue
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
dei:EntityCommonStockSharesOutstanding

nni:AdditionalRepurchaseAgreementPrivateEducationLoanAssetBackedSecurities
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
nni:AmountOfLoansSecuritized
us-gaap:RelatedPartyTransactionsByRelatedParty
nni:AmountOfParticipationFfelpStudentLoans
us-gaap:RelatedPartyTransactionsByRelatedParty
nni:AmountOfParticipationStudentLoanAssetBackedSecurities
nni:InvestmentServices
nni:Amountinvestedinfunds
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedAccountsReceivable
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedCashAndCashEquivalents
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedGoodwill
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedIntangibleAssets
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedNoncontrollingInterests
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedOtherAssets
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedOtherLiabilities
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedPropertyAndEquipment
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:AssetsAndLiabilitiesDeconsolidatedRelatedPartyCashAndCashEquivalents
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
nni:BeneficialInterestInSecuritization

nni:BeneficialInterestInSecuritizationAllowanceForCreditLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
nni:BeneficialInterestInSecuritizationFairValueDisclosure
us-gaap:FairValueByMeasurementBasis

nni:BondsIssuedToCoverRiskRetentionPolicyOnLoansWithBeneficialSecuritization

nni:CashAndCashEquivalentsHeldAtRelatedParty

nni:CashAndCashEquivalentsNotHeldAtRelatedParty

nni:CashAndCashEquivalentsRelatedParty
us-gaap:RelatedPartyTransactionsByRelatedParty
dei:LegalEntity, us-gaap:SubsequentEventType
nni:CommitmentToObtainDebtFinancing

nni:DebtSecuritiesAvailableForSaleFairValueMaturityAllocatedAndSingleMaturityDateRollingWithinOneThroughTenYears

nni:DeferredTaxAssetsLeaseLiability

nni:DeferredTaxAssetsStudentLoans

nni:DeferredTaxLiabilitiesLeaseRightOfUseAsset

nni:DeferredTaxLiabilitiesLoanOriginationServices

nni:DeferredTaxLiabilitiesUnrealizedGainOnDebtAndEquitySecurities

nni:DeferredTaxLiabilitiesinPartnershipBasis

nni:Deferredtaxassetsecuritizations
us-gaap:InvestmentType
nni:EquityMethodInvestmentAmountCommittedToFund
us-gaap:InvestmentType
nni:EquityMethodInvestmentAmountCommittedToFundByPartners
us-gaap:InvestmentType
nni:EquityMethodInvestmentAmountFunded
us-gaap:InvestmentType
nni:EquityMethodInvestmentAmountFundedOrCommittedToFund
us-gaap:InvestmentType
nni:EquityMethodInvestmentAmountFundedOrCommittedToFundByPartners
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
nni:EquityMethodInvestmentPreferred
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:Ownership, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:Ownership, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
nni:EquityMethodInvestmentPreferredReturnAccruedAndNotYetPaid

nni:EquitySecuritiesFVNIUnrealizedGainGross

nni:EquitySecuritiesFVNIUnrealizedLossGross
nni:WarehouseAgreement, us-gaap:DebtInstrument
nni:FfelpWarehouseFacilityEquitySupport
nni:WarehouseAgreement, us-gaap:DebtInstrument, us-gaap:LineOfCreditFacility
us-gaap:FinancingReceivablePortfolioSegment
nni:FinancingReceivableDeferredLoanOriginationCosts

nni:FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour
us-gaap:ConsolidatedEntities
nni:InvestmentInSubsidiaries
us-gaap:ConsolidatedEntities
nni:InvestmentInSubsidiaryDebt

nni:InvestmentsAndNotesReceivables
us-gaap:ConsolidatedEntities
us-gaap:FinancingReceivablePortfolioSegment
nni:LoansInForbearance
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
nni:LoansInForbearancePercent
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
nni:LoansInRepaymentCurrentInPercentage
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

nni:LoansInRepaymentPercent
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
nni:LoansInSchoolGraceAndDeferment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
nni:LoansInSchoolGraceAndDefermentPercent
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
nni:LoansReceivableAmountCorrespondingToBeneficialOwnership

nni:MarketableSecuritiesAmortizedCost

nni:MarketableSecuritiesUnrealizedGain

nni:MarketableSecuritiesUnrealizedLoss
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
nni:NotesReceivableConstantPrepaymentRate
us-gaap:ConsolidatedEntities
nni:Notesreceivablefromsubsidiaries
dei:LegalEntity, us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByType
nni:NumberOfBorrowers
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment, us-gaap:TroubledDebtRestructuringDebtorCurrentPeriod
nni:InvestmentServices, us-gaap:StatementClassOfStock
nni:NumberOfSharesUnderManagementWithRelatedParty
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
nni:OtherInvestmentsMiscellaneousInvestment
nni:InvestmentServices
nni:PercentOfBasisPointsEarnedOnOutstandingBalancePaidToCustodian
us-gaap:Ownership
nni:ProceedsFromNoncontrollingInterestsIfDebtFinancingObtained
us-gaap:Ownership, us-gaap:SubsequentEventType

nni:PurchasedAccruedInterest

nni:RepurchaseAgreementsPrivateEducationLoanAssetBackedSecurities

nni:RestrictedCashDueToCustomers
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:RelatedPartyTransactionsByRelatedParty
nni:InterestRateSwap, us-gaap:DerivativeInstrumentRisk
nni:StudentLoansEarningFixedRateFloorIncome
us-gaap:FinancingReceivablePortfolioSegment
nni:TotalLoansInRepayment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
nni:TotalLoansInRepaymentInPercentage
us-gaap:ConsolidatedEntities
nni:VariableInterestEntityNonconsolidatedCarryingAmountInvestment
us-gaap:ConsolidatedEntities
nni:VariableInterestEntityNonconsolidatedCarryingAmountUnfundedCapitalAndOtherCommitments
us-gaap:ConsolidatedEntities
nni:VariableInterestEntityNonconsolidatedDeferredIncomeTaxAssetsNet

nni:VariableInterestEntityReportingEntityInvolvementMaximumLossExposureAmountSyndicatedToOtherInvestors
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment
nni:WarehouseFacilityEquitySupport
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment, us-gaap:LineOfCreditFacility
us-gaap:DebtInstrument, us-gaap:LongtermDebtType

srt:PayablesToCustomers
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:AccountsReceivableNet
us-gaap:ConsolidatedEntities
us-gaap:AccruedLiabilitiesAndOtherLiabilities

us-gaap:AllowanceForDoubtfulAccountsReceivable

us-gaap:AssetsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:ConsolidatedEntities
us-gaap:AssetsNet

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleDebtSecuritiesAmortizedCostBasis
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue

us-gaap:AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue

us-gaap:AvailableForSaleSecuritiesDebtSecurities
us-gaap:FinancialInstrument

us-gaap:AvailableForSaleSecuritiesEquitySecurities

us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

us-gaap:ContractWithCustomerLiability
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DebtInstrumentCarryingAmount
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:DebtInstrumentFairValue
us-gaap:FairValueByMeasurementBasis

us-gaap:DebtInstrumentUnamortizedDiscountPremiumNet

us-gaap:DeferredIncomeTaxLiabilities

us-gaap:DeferredTaxAssetsDeferredIncome

us-gaap:DeferredTaxAssetsDerivativeInstruments

us-gaap:DeferredTaxAssetsGross

us-gaap:DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal

us-gaap:DeferredTaxAssetsTaxCreditCarryforwards

us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost

us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities

us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets

us-gaap:DeferredTaxLiabilitiesOther

us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment

us-gaap:Deposits
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:RelatedPartyTransactionsByRelatedParty
nni:FixedRateFloorIncomeInterestRateSwap, nni:InterestRateSwap, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeAverageFixedInterestRate
nni:InterestRateSwap, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk, us-gaap:VariableRate
us-gaap:DerivativeBasisSpreadOnVariableRate
nni:FixedRateFloorIncomeInterestRateSwap, nni:InterestRateSwap, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeNotionalAmount
nni:InterestRateSwap, us-gaap:DerivativeInstrumentRisk
us-gaap:DerivativeInstrumentRisk
nni:EmployeeServiceShareBasedCompensationNonvested, us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
us-gaap:AwardType
us-gaap:Ownership
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:AdjustmentsForChangeInAccountingPrinciple, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:EquityMethodInvestments
us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

us-gaap:EquitySecuritiesFvNiCost
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:EquitySecuritiesWithoutReadilyDeterminableFairValueAmount
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss
us-gaap:FairValueByMeasurementBasis

us-gaap:FinancingReceivableAccruedInterestBeforeAllowanceForCreditLoss
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableAllowanceForCreditLosses
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableBeforeAllowanceForCreditLossAndFee
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedInCurrentFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePercentPastDue1
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivableRecordedInvestmentCurrent
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivableRecordedInvestmentPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivablesPeriodPastDue, us-gaap:InternalCreditAssessment

us-gaap:FinancingReceivableUnamortizedLoanCommitmentOriginationFeeAndPremiumDiscount
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FiniteLivedIntangibleAssetsByMajorClass
us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree

us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo

us-gaap:IncomeTaxReceivable

us-gaap:InterestPayableCurrentAndNoncurrent
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:Investments
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis

us-gaap:InvestmentsFairValueDisclosure
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FinancialInstrument
us-gaap:FinancialInstrument

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
nni:WarehouseAgreement, us-gaap:DebtInstrument
us-gaap:LineOfCredit
nni:WarehouseAgreement, us-gaap:DebtInstrument, us-gaap:LineOfCreditFacility
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment, us-gaap:LineOfCreditFacility
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity
nni:WarehouseAgreement, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityRemainingBorrowingCapacity
nni:WarehouseAgreement, us-gaap:DebtInstrument, us-gaap:LineOfCreditFacility
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment, us-gaap:LineOfCreditFacility
us-gaap:DebtInstrument, us-gaap:LongtermDebtType
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
us-gaap:DebtInstrument
us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
nni:WarehouseAgreement, us-gaap:Range, us-gaap:DebtInstrument
us-gaap:LongTermDebtPercentageBearingVariableInterestRate
us-gaap:DebtInstrument
us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment
us-gaap:Range, us-gaap:DebtInstrument, us-gaap:InternalCreditAssessment

us-gaap:MarketableSecurities
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:MinorityInterestInJointVentures
us-gaap:ConsolidatedEntities, us-gaap:Ownership
us-gaap:MinorityInterestOwnershipPercentageByParent

us-gaap:NotesReceivableGross
us-gaap:FinancialInstrument
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:FinancingReceivableRecordedInvestmentByClassOfFinancingReceivable, us-gaap:FinancingReceivablesPeriodPastDue
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment

us-gaap:NotesReceivableNet
nni:InterestRateIndex, us-gaap:DerivativeInstrumentRisk
us-gaap:ConsolidatedEntities
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:FairValueByMeasurementBasis
us-gaap:FinancingReceivablePortfolioSegment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment
us-gaap:FinancingReceivablePortfolioSegment, us-gaap:InternalCreditAssessment, us-gaap:TroubledDebtRestructuringDebtorCurrentPeriod
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType
us-gaap:NotesReceivableRelatedParties
us-gaap:Ownership, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType, us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent

us-gaap:OtherBorrowings

us-gaap:OtherInvestments
us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

us-gaap:OtherLiabilities
us-gaap:ConsolidatedEntities

us-gaap:RestrictedCash
us-gaap:ConsolidatedEntities
us-gaap:CounterpartyName, us-gaap:PledgedStatus, us-gaap:SubsequentEventType
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis
us-gaap:RestrictedCashAndInvestments
us-gaap:FairValueByMeasurementBasis

us-gaap:SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit
us-gaap:ReasonablyPossibleSignificantChangeInUnrecognizedTaxBenefitsByItem

us-gaap:StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased

us-gaap:TaxCreditCarryforwardAmount

us-gaap:TradingSecuritiesEquity

us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued

us-gaap:UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
us-gaap:ConsolidatedEntities
us-gaap:VariableInterestEntityEntityMaximumLossExposureAmount

Plots across concepts


IncomeStatement
Other Comprehensive Income Loss Net Of Tax
Expenses
Cost Of Goods And Services Sold
Balance Sheet
Operating Lease Right Of Use Asset
Assets
Operating Lease Right Of Use Asset
Current Assets
Cash And Cash Equivalents At Carrying Value
NonCurrent Assets
Operating Lease Right Of Use Asset
PropertyPlantAndEquipmentNet
Property Plant And Equipment Net
Liabilities
Operating Lease Liability
Noncurrent Liabilities
Minority Interest
Stockholders Equity
Additional Paid In Capital
CashFlow
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInOperatingActivities
Share Based Compensation
NetCashProvidedByUsedInInvestingActivities
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInFinancingActivities
Payments For Repurchase Of Common Stock
Shares
Weighted Average Number Of Share Outstanding Basic And Diluted
DividendsAndRepurchase
Payments For Repurchase Of Common Stock
LesseeOperatingLeaseLiabilityPaymentsDue
Lessee Operating Lease Liability Payments Due Year Four
BanksAndOrInsurance
Interest And Dividend Income Operating
LiabilitiesBanks
Deposits

Tables

  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 us-gaap:CommonStockValue us-gaap:ConsolidatedEntities srt:ParentCompanyNANA0.384NANANA0.398NANANA0.403NANANA0.408NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassA▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▃▃▃▃▄▄▄▅▅▆▆▆▆▆▇▆▆▇▇▇▇▇▇▇▇█0.2750.2740.2720.2720.2720.2860.2850.2840.2840.2860.2880.2930.2930.2930.2930.2940.3040.3070.3060.3080.310.310.3250.3340.3370.3470.3480.3480.3490.350.3490.3490.350.350.3510.3580.3580.3580.3560.360.37NA0.368NANA
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▃▃▃▃▄▄▄▄████████████████████████████████0.1110.1120.1120.1120.1120.1130.1130.1130.1130.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.115NA0.115NANA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 38.741486NANANA39.203404NANANANANANANANANANANANANANANANANANANANANANANANANANANANA46.658031NA47.32179747.29214747.184079NA48.25388848.48804648.363035NA48.93833349.934648
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 38.741486NANANA39.203404NANANANANANANANANANANANANANANANANANANANANANANANANANANANA46.658031NA47.08609847.04905546.989773NA48.05974748.30277948.171317NA48.93833349.735398
us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted NA38.603555NA38.53847639.20340439.955514NA39.87712940.05006540.373295NA40.98896540.88661740.950528NA41.55331642.3265442.291857NA42.64221342.635743.088092NA45.04777745.94641546.29059NA46.4326846.52937746.527917NA46.49661246.62685346.658031NA47.46030847.434915NANANANANANANANA
 us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:CommonShareholdersNA38.031267NA37.98858438.64179439.405454NA39.35631139.51865239.855122NA40.44178340.41135940.54187NA41.14642441.9139941.851064NA42.1995842.19376942.630806NA44.57051945.45188845.799873NA45.94825546.07586946.110952NA46.08674346.21057146.272324NA47.08618247.049055NANANANANANANANA
 us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:UnvestedRestrictedStockShareholdersNA0.572288NA0.5498920.561610.55006NA0.5208180.5314130.518173NA0.5471820.4752580.408658NA0.4068920.412550.440793NA0.4426330.4419310.457286NA0.4772580.4945270.490717NA0.4844250.4535080.416965NA0.4098690.4162820.385707NA0.3741260.38586NANANANANANANANA
us-gaap:EarningsPerShareBasic 2.16NANANA2.21NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA1.20.780.870.911.370.980.761.131.73-0.011.0
 us-gaap:EarningsPerShareBasic us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:CommonShareholders2.16NANANA2.21NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EarningsPerShareBasic us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:UnvestedRestrictedStockShareholders2.16NANANA2.21NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareDiluted 2.16NANANA2.21NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA1.190.770.870.911.370.980.761.131.73-0.010.99
 us-gaap:EarningsPerShareDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:CommonShareholders2.16NANANA2.21NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:EarningsPerShareDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:UnvestedRestrictedStockShareholders2.16NANANA2.21NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EarningsPerShareBasicAndDiluted NA3.26.11.862.21-1.011.060.830.611.030.531.051.212.781.171.110.681.182.321.980.611.111.861.091.541.41.591.841.611.591.521.352.171.461.20.780.870.91NANANANANANANA
 us-gaap:EarningsPerShareBasicAndDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:CommonShareholdersNA3.26.0299999999999991.862.21-1.011.060.830.611.030.53000000000000021.051.212.781.16999999999999951.110.681.182.31999999999999941.980.611.111.85999999999999941.091.541.41.58999999999999991.841.611.591.51999999999999961.352.171.461.19999999999999970.780.870.91NANANANANANANA
 us-gaap:EarningsPerShareBasicAndDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities nni:UnvestedRestrictedStockShareholdersNA3.26.0299999999999991.862.21-1.011.060.830.611.030.53000000000000021.051.212.781.16999999999999951.110.681.182.31999999999999941.980.611.111.85999999999999941.091.541.41.58999999999999991.841.611.591.51999999999999961.352.171.461.19999999999999970.780.870.91NANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
 COGS Ratio us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:CommunicationsServices,nni:CommunicationsSegmentNANA19.25320.21118.99818.18117.49916.4715.75814.54313.32611.81810.329.1898.1236.7515.719NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:EducationTechnologyServicesAndPaymentProcessingServices,nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment▅█▄▅▃▆▄▅▃▆▃▃▂▃▁▂▁76.70295.25865.09674.12159.30483.67563.57874.25160.34279.15954.5958.40948.74260.22143.32650.35843.48NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment▁▂▂▂▂▅▅█▄▅▄▄▂▂▁▁▁0.210.2630.2590.3670.421.9912.0693.4991.6592.0171.5261.5130.7480.6650.0070.0050.003NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService nni:CommunicationsServicesNANA19.25320.21118.99818.18117.49916.4715.75814.54313.32611.81810.329.1898.1236.7515.719NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 COGS Ratio us-gaap:ProductOrService nni:EducationTechnologyServicesAndPaymentProcessingServices▅█▄▅▃▆▄▅▃▆▃▃▂▃▁▂▁76.70295.25865.09774.12159.30483.67563.57874.25160.34279.15954.58958.40948.74260.22143.32650.35843.48NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:AssetGenerationAndManagementSegment▁▁▂▂▂▄▆▇███▇▇▅▅▅▅129.965126.402137.006137.959150.583185.926208.575233.225243.295246.867248.621236.039226.509200.334195.56194.971191.368NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment▁▂▂▂▂▅▅█▄▅▄▄▂▂▁▁▁0.210.2630.2590.3670.421.9912.0693.4991.6592.0171.5261.5130.7480.6650.0070.0050.003NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 EBT Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:LoanServicingAndSystemsSegment▁▁▁▁▁▅▇██▇▆▆▅▄▃▃▂0.030.0340.0330.0340.0520.3170.4520.5320.550.4970.420.3810.2930.2570.1520.1470.12NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:AssetGenerationAndManagementSegment▁▁▂▂▂▄▆▇███▇▇▅▅▅▅129.965126.402137.006137.959150.583185.926208.575233.225243.295246.867248.621236.039226.509200.334195.56194.971191.368NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment▁▂▂▂▂▅▅█▄▅▄▄▂▂▁▁▁0.210.2630.2590.3670.421.9912.0693.4991.6592.0171.5261.5130.7480.6650.0070.0050.003NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 Net profit Margin us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:LoanServicingAndSystemsSegment▁▁▁▁▁▅▇██▇▆▆▅▄▃▃▂0.030.0340.0330.0340.0520.3170.4520.5320.550.4970.420.3810.2930.2570.1520.1470.12NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:ComprehensiveIncomeNetOfTax ▄▅█▄▄▁▃▃▃▃▃▃▃▅▃▃▃▃▅▄▃▃▄▃▄▄▄▄▄▄▄▄▅▄▄▃▃▃▄▃▃▃85.786126.518236.80972.55488.856-42.64542.46232.95824.21141.2621.53444.19849.117113.07348.53146.23927.67350.611103.586.14722.45747.09382.75848.54869.3264.50273.64784.74977.88471.64669.61765.95598.7970.31661.3835.30440.3843.74664.87947.45137.12554.88NANANA
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ▆▆▂▆▇█▆▇▇▇▇▇▇▆▃▃▁▄█▇▇▇▇▇▇▇-0.854-0.694-3.385-0.3270.1280.767-0.547-0.0770.0590.0560.0490.1990.104-0.74-2.385-2.768-4.086-2.1060.5850.0690.0280.0680.1680.0220.0540.041NA0.1570.6930.513NA0.2160.6140.2710.0190.1240.1360.1520.00.00.00.0NANANA
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▄▅█▄▄▁▃▃▃▃▃▃▃▅▃▃▃▃▅▄▃▃▄▃▄▄▄▄▄▄▄▄▅▄▄▃▃▃▄▃▃▃84.932125.824233.42472.22788.984-41.87841.91532.88124.2741.31621.58344.39749.221112.33346.14643.47123.58748.505104.08586.21622.48547.16182.92648.5769.37464.54373.95584.90678.57772.15970.18566.17199.40470.58761.39935.42840.51643.89864.87947.45137.12554.88NANANA
us-gaap:CostOfGoodsAndServicesSold ▅▇▆█▄▇▆█▄▆▄▅▂▃▂▃▁21.67627.05224.35431.15721.11928.38824.32930.90720.97225.81820.51323.39715.18217.414.38317.78311.718NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:GainLossOnInvestments ▄▃▃▁█▂15.5918.49811.884-10.15253.151-1.025NA1.9484.258NANANANANANANANANANANANANANANANANANANANANANANANANA0.9944.254NANA6.939-4.084NANANANANA
us-gaap:GainsLossesOnExtinguishmentOfDebt NANA1.4160.105NANA-0.874-14.014NANA0.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▄▅█▄▄▁▃▃▃▃▂▃▃▅▃▃▃▄▅▅▃▃▅▄▄▄109.25157.765302.1890.332107.874-49.89850.85541.96430.88753.03817.07657.00863.05149.16140.2369.09740.68376.675153.06132.07841.21472.462130.91375.976111.319102.436NA131.889118.765114.91NA93.49156.603106.797NA58.82256.40866.523NA71.86158.231NANANANA
us-gaap:IncomeTaxExpenseBenefit ▅▆█▅▅▃▄▄▄▄▃▄▄▆▃▅▅▅▇▇▄▅▇▅▆▆▅▆▆▆▁▅▇▆▁▅▄▅▁▅▅▆▇▃▅26.23734.86170.57319.15621.264-10.1339.0228.8296.20911.391-4.59913.88213.51135.976-5.48625.56216.03228.75554.12847.71515.03624.43347.39526.99940.35637.6330.03646.51343.07840.611-37.55630.44454.74638.447-36.09921.8714.87823.23-39.00824.4121.10632.92851.057-0.22629.996
us-gaap:IncomeTaxesPaidNet ▄▃▄▃▄▃▃▃▄▃▄▃▅▁▅▅▆▃▅▅▇▃▆▆█▃▆▆█▄▆▆█▄▅▅▇▃▆▆▅▅▅▅14.030.19916.2725.4647.8690.082.8523.29111.538-0.0096.9640.79923.279-30.56925.2925.23845.0131.1827.78231.64554.6651.32342.83237.19267.1660.04536.96235.1670.32813.37840.09644.87864.3775.48927.9629.68554.1932.9235.5434.30931.03832.29328.18125.887NA
us-gaap:InterestExpense ▂▁▂▂▃▆▆▇████▇▆▅▅▅▄▄▄▄▄▃▃▃▃▃▃▃▂▂▂▂▂▃▃▃▃▃▂▂▂▂▃▂49.99127.77352.28358.42385.248134.118148.106172.488186.963191.77182.732180.175171.45135.55123.401121.65113.236106.899107.33696.38694.05290.40880.86677.16472.62671.55472.06171.93769.23560.00459.13555.31558.12758.35865.39166.40267.47669.29764.06260.86651.05452.30754.51568.24359.243
us-gaap:InterestIncomeExpenseNet ▄▆▅▄▂▁▂▂▂▁▃▂▁▂▃▃▄▃▄▆▅▆▇▇▇▆▇█▇▆▇▇▆▆▅▄▄▄▅▆▅▄▆▅▆83.592101.3386.55681.32266.63555.07364.25266.45759.82558.81669.53959.77357.73967.30773.23575.23479.84176.92578.9699.79592.2101.609112.215111.993105.096102.595112.492117.487107.71398.871108.736104.922101.41998.79890.59885.26684.56784.85693.29196.76188.73685.77796.33592.21397.414
us-gaap:InterestPaidNet ▁█39.21839.686NANA83.986125.184138.879163.655NANA165.612165.802NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:NetIncomeLoss ▄▅█▄▄▁▃▃▃▃▃▃▃▅▃▃▃▃▅▄▃▃▄▃▄▄▄▄▄▄▄▄▅▄▃▃▃▃▄▃▃▃▄▂▃83.867123.598234.99171.50386.482-40.53242.3833.21224.61941.59121.62642.92749.435113.92548.146.30328.73750.02698.34684.29426.1547.96183.3548.95570.90964.76573.61185.21974.99473.78670.5262.83101.24368.07956.63436.82841.39443.14164.87947.45137.12554.8885.087-0.36849.993
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ▆▆▂▆▇█▆▇▇▇▇▇▇▆▃▃▁▄█▇▇▇▇▇▇▇▇▇███▇█▇▇▇▇▇▇▇▇▇-0.854-0.694-3.385-0.3270.1280.767-0.546-0.0770.0590.0560.0480.1990.104-0.74-2.386-2.768-4.086-2.1060.5850.0690.0280.0680.1680.0220.0540.0410.3080.1570.6930.5130.5680.2160.6140.2710.0190.1240.1360.1520.00.00.00.0NANANA
 us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:ConsolidationItems us-gaap:CorporateNonSegment▅▇▁▆▇█▆▇▇▇-0.8540.017-3.385-0.3270.1280.767-0.547-0.0770.0590.056NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:ConsolidationItems us-gaap:IntersegmentEliminationNA-0.711NANA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OperatingExpenses ▅▅█▇▆▇▇▇▆▆▆▆▆▄▃▃▂▂▂▁▁▂▂▂▂▂▂▂▂▁▂▁▁▁▂▁▂▂▁▁▁▁▃▅▂171.791172.673213.352191.148185.692190.91199.922202.7181.115179.088187.783185.445176.225151.653136.392125.333119.017114.987115.801106.792107.412111.512117.223120.938115.828115.228114.906117.445112.79107.369111.607107.607102.904106.865109.244104.937108.211111.172102.691104.778100.55799.632131.274160.287108.221
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▁█-0.0010.001NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:OtherComprehensiveIncomeLossNetOfTax ▅▆▅▅▆▂▄▄▄▄▄▅▄▃▄▄▃▄█▅▁▃▃▄▃▄▄▄▆▂▃▆▂▆█▃▃▄1.9192.921.8181.0512.374-2.1130.082-0.254-0.408-0.331-0.0921.271-0.318-0.8520.43-0.064-1.0640.5855.1541.853-3.693-0.868-0.592-0.407-1.589-0.2630.036-0.472.89-2.14-0.9033.125-2.4532.2374.746-1.524-1.0140.605NANANANANANANA
us-gaap:OtherIncome NANA-12.351.50260.1278.28126.52213.43916.1529.0679.99816.6739.5818.1987.95219.75612.48512.63215.21815.159.76513.7966.6846.5237.5046.91812.9067.6515.31518.13115.9818.61312.2889.4167.02312.6998.810.95412.2643.9316.8266.4926.1229.4328.496
 us-gaap:OtherIncome us-gaap:ConsolidationItems us-gaap:CorporateNonSegmentNANA-17.466-2.73757.0892.0834.1277.2318.6243.344NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherIncome us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:AssetGenerationAndManagementSegmentNANA2.2381.0040.7323.21518.5533.3844.8883.5253.6913.2672.7723.3512.7052.7533.057NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherIncome us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:CommunicationsSegmentNANA0.3050.5110.3920.3530.490.5320.3620.1250.1250.950.00.0NA0.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherIncome us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:EducationTechnologyServicesAndPaymentProcessingServicesSegmentNANA0.00.3730.00.00.2590.00.00.00.00.00.00.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:OtherIncome us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:LoanServicingAndSystemsSegmentNANA2.5242.3531.9142.633.0942.2912.2772.0742.0881.9481.9561.2920.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:ProfitLoss ▄▅█▄▄▁▃▃▃▃▃▃▃▅▃▃▃▃▅▄▃▃▄▃▄▄▄▄▄▄▄▄▅▄▃▃▃▃▄▃▃▃83.013122.904231.60671.17686.61-39.76541.83433.13524.67841.64721.67443.12649.539113.18545.71443.53524.65147.9298.93184.36326.17848.02983.51848.97770.96364.80673.91985.37675.68774.29971.08863.046101.85768.3556.65336.95241.5343.29364.87947.45137.12554.88NANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity,us-gaap:MajorCustomers,us-gaap:ConcentrationRiskByType nni:NelnetServicing,nni:DepartmentOfEducation,us-gaap:CustomerConcentrationRisk█▁35.434.9NA36.337.438.7NA38.6NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:CommunicationsServices,nni:CommunicationsSegmentNANA19.25320.21118.99818.18117.49916.4715.75814.54313.32611.81810.329.1898.1236.7515.719NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:EducationTechnologyServicesAndPaymentProcessingServices,nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment▅█▄▅▃▆▄▅▃▆▃▃▂▃▁▂▁76.70295.25865.09674.12159.30483.67563.57874.25160.34279.15954.5958.40948.74260.22143.32650.35843.48NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:ProductOrService,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,nni:LoanServicingAndSystems,nni:LoanServicingAndSystemsSegment█████████████▆▁▁▁112.094111.517113.99113.794111.042112.735113.086113.286113.985114.898112.762112.579114.545100.14155.92155.9556.899NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers nni:BusinessRevenueNANANA4.9184.6194.4714.4334.0253.8163.4143.1972.8612.5352.3812.2192.0131.8141.696NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers nni:CommunicationsRevenueCustomerNANANA20.21118.99818.18117.49916.4715.75814.54313.32611.81810.329.1898.1236.7515.7195.106NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers nni:OtherCustomerRevenueNANANA0.120.170.1510.0730.0480.0520.0640.0620.0610.0580.0610.0590.0580.0850.059NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers nni:ResidentialRevenueNANANA15.17314.20913.55912.99312.39711.8911.06510.0678.8967.7276.7475.8454.683.823.351NANANANANANANANANANANANANANANANANANANANANANANANANANANA
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 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:CommunicationsServicesNANA19.25320.21118.99818.18117.49916.4715.75814.54313.32611.81810.329.1898.1236.7515.719NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:EducationTechnologyAndServices▆█▃▃▃▄▂▂▃▄▂▂▂▃▁▁▂▃24.73332.32215.06515.8414.92720.05411.70613.06714.09619.70910.74411.41912.01816.9758.7359.83110.82515.147NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:EducationTechnologyServicesAndPaymentProcessingServices▅█▄▅▃▆▄▅▃▆▃▃▂▃▁▂▁76.70295.25865.09774.12159.30483.67563.57874.25160.34279.15954.58958.40948.74260.22143.32650.35843.48NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:FFELPServicing▂▂▂▃▃▄▄▄▅▅▆▆█▆▁▁▁▂4.7034.674.744.9124.9175.6145.8356.0896.4246.6957.2837.4229.1477.6913.8493.9793.6364.077NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:GovernmentServicingGreatLakes█▇▇██████████▆▁▁▁▁43.86343.30242.86245.3545.21346.44646.37146.23445.97347.07746.19145.67145.68230.7540.00.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:GovernmentServicingNelnet▂▁▁▃▄▆▇▆█▇▆▆▇▇▆▆▇▆35.37634.87234.49336.29537.3638.6539.24738.64540.45939.6439.07638.90739.78139.32738.4238.59439.80939.007NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:InternetNANANA12.79411.9311.19910.5989.8999.2978.4497.5226.4565.3954.6963.9983.2052.5692.202NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:LoanServicingAndSystems█████████████▆▁▁▁112.094111.517113.99113.794111.042112.735113.086113.286113.985114.898112.761112.579114.545100.14155.92155.9556.899NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:LoanServicingAndSystemsRevenue█████████████▆▁▁▁▁112.094111.517113.99113.794111.042112.735113.086113.286113.985114.898112.762112.579114.545100.14155.92155.9556.89954.229NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:OtherCommunicationRevenueNANANA0.040.0380.0550.0820.0160.0160.0290.030.020.0170.0210.020.0180.0460.019NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:OtherServiceOffering█▇█▇▆▆▇▆▆▆▆▆▆▆▄▄▁▄0.4230.3480.3930.3840.2620.2920.3590.2860.280.2980.2930.2630.2810.2770.10.101-0.1010.145NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:OutsourcedServicesRevenueAndOther▅▇█▅▃▂▂▂▂▂▂▂▂▁▁▁▂▁7.96211.67114.5328.8834.7052.0982.0492.2642.1232.2652.262.3712.3821.6791.4381.3512.0070.991NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:PaymentProcessing▅▇▅█▃▇▅█▃▆▃▅▂▃▂▄▁▃25.00833.03825.97535.4221.16831.74225.4235.13821.31128.97921.38126.95616.02619.92616.28122.54113.88518.945NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:PrivateEducationAndConsumerLoanServicing█▄▃▃▃▄▄▅▄▅▅▅▄█▃▃▂▁12.8168.5487.7597.9288.1968.6098.7629.5618.9859.489.48410.0078.88213.1017.5257.5967.1215.817NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:SoftwareServices▄▅▆▇▇██▇▇▆▅▅▅▄▁▁▁▁7.3748.4549.60410.42610.65111.31810.82210.49310.0219.7418.4688.2018.6717.5894.6894.434.3264.337NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:TelephoneNANANA2.9312.8122.6912.6432.4872.3952.1672.0751.9571.8251.6891.5851.4131.3441.262NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:TelevisionNANANA4.4464.2184.2364.1764.0684.053.8983.6993.3853.0832.7832.522.1151.761.623NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService nni:TuitionPaymentPlanServices▅▇▄▃▄█▅▅▄▇▃▂▂▄▁▁▂▃26.53829.5523.66322.47722.94731.58726.09325.7624.65530.17322.17219.77120.41723.04318.2117.88518.87121.787NANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:AdministrativeService▃▄▇▇▃▇█▆▆▆▆▅▅▄▁▁▁0.7011.1132.5242.3530.9222.2432.8312.0842.0511.8721.8241.7561.7561.1610.00.00.0NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService us-gaap:InvestmentAdvice▂▄▄▆▃▄▁▁▁▁▃▂▂▂▁█▃1.1452.6972.6884.4631.9142.8020.7470.7530.7310.7111.841.1831.3941.5931.0625.8522.294NANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:Assets ▂▁▁▁▁▂▂▂▃▃▃▃▃▂▂▃▃▄▅▅▆▇▇█▇▇▇▇█▅▅▄▄▄▄▃▃▃▄▄▃23028.86322167.20822646.1622222.52622611.20823280.62823708.9723936.71924219.824721.92725220.96825104.92525209.24423898.40223964.43524768.7125323.08726141.2227180.10827669.61128715.79829589.34730485.90531045.39530246.82329955.79430098.14330698.64931371.02227487.00727770.84926536.92826303.17726645.22426607.89524408.84425269.14225446.31225852.21726236.22724871.511NA25893.892NANA
us-gaap:Liabilities ▂▁▁▁▂▂▂▂▃▃▃▃▃▃▃▃▄▄▅▅▆▇▇█▇▇▇▇█▅▆▅▅▅▅▄▄▄▅▅▄20200.24519418.10720017.81119819.69520270.42220954.82821317.87621582.05421893.18222391.63322906.18922777.79722922.54121653.17621799.04822638.2723192.67824013.55325109.18325688.51526809.58227702.42128593.74729209.99628441.33128174.30128372.46529041.09229790.89425973.33326326.85925159.01524983.58225418.8225442.68223232.60624124.24424338.43924786.01225224.74423882.727NA24987.259NANA
us-gaap:LiabilitiesAndStockholdersEquity ▂▁▁▁▁▂▂▂▃▃▃▃▃▂▂▃▃▄▅▅▆▇▇█▇▇▇▇█▅▅▄▄▄▄▃▃▃▄▄▃23028.86322167.20822646.1622222.52622611.20823280.62823708.9723936.71924219.824721.92725220.96825104.92525209.24423898.40223964.43524768.7125323.08726141.2227180.10827669.61128715.79829589.34730485.90531045.39530246.82329955.79430098.14330698.64931371.02227487.00727770.84926536.92826303.17726645.22426607.89524408.84425269.14225446.31225852.21726236.22724871.511NA25893.892NANA
us-gaap:StockholdersEquity ██▇▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▂▂▂▂▁▁▁▁▁2833.82752.192632.0422399.4852336.7962320.682386.7122350.152322.3262325.9962304.4642316.8642276.8692235.7532149.5292111.8512115.1942108.1872061.6551972.0851897.31878.2541884.4321835.1531805.1921781.2221725.4481657.2891579.7421512.9191443.6621377.8631319.4821226.1231165.2081175.8211144.6051107.7161066.205NANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:CashAndCashEquivalentsAtCarryingValue ▅▄▃▂▂▅▃▄▂▂▃▂▂▂▂▆▂▃▂▂▁▁▂▃▅▂▃▂▂▃▂▁▂▁▂▂▁▁▁▂▃▁▇█▇212.989144.229121.24996.31667.54204.844133.906160.97984.474.881121.34783.53767.86769.28666.752254.39169.239108.1669.65467.15459.25351.03463.529114.498182.28100.046130.48174.57992.099107.10263.26751.39168.58450.06666.03193.67456.25560.742.5792.094116.34148.137283.801316.361274.761
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents ▅▂▂▁▁▅█▆▄▄▇▃▂▂▂▅▃▃▇1077.373947.191958.395901.541921.3151100.3381222.6011138.2071053.9971051.6251192.391995.466964.353925.272942.0661085.153986.28989.4941170.317NANANA1040.924NANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:PropertyPlantAndEquipmentGross 311.049NA283.152NANANANANANANANANANANANANANANANANANANANANANANA130.285NANANA109.658NANANA102.701NANANA111.433NANANANANANA
us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment 182.522NA159.625NANANANANANANANANANANANANANANANANANANANANANANA84.391NANANA75.829NANANA70.832NANANA76.614NANANANANANA
us-gaap:AmortizationOfIntangibleAssets ████▇▇█████▇▇▆▂▂▂▂▃▃▃▃▃▂▂▂▂▂▂▁▁▁▁8.38.48.08.07.47.48.08.08.38.58.37.97.86.22.32.32.42.43.23.22.72.52.62.42.42.42.12.01.41.00.80.80.8NA5.04.64.7NA4.74.54.0NANANANA
us-gaap:PropertyPlantAndEquipmentNet ▃▃▃██████▇██▇▇▆▅▄▃▃▃▂▂▂▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁128.527130.45123.527360.49350.043351.097348.259342.401337.418335.07344.784339.73328.016299.837248.051208.441181.098143.062123.786107.50596.07988.70880.48246.70648.04751.00345.89444.64735.49833.30233.82933.01334.39231.10731.86932.75233.10534.11934.81933.33534.593NA30.573NANA
us-gaap:Goodwill ▅▅▅████████▇▇█▅▆▆▆▆▆▆▆▆▃▃▃▃▃▃▁▁▁▁▁▁▁▁▁▁▁▁142.092142.092142.092156.912156.912156.912156.912156.912156.912156.912156.912153.802153.802158.456138.759147.312147.312147.312147.312147.312147.312147.312146.0126.2126.2126.2126.2126.2126.2117.118117.118117.118117.118117.118117.118117.118117.118117.118117.118117.118117.118NA117.118NANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▄▅▅▄▅▅▆▆▇▇█▇▇█▃▃▃▄▄▄▄▄▄▃▃▃▃▃▄▁▁▁▁▁▁▂▂▂▂▃▃58.46466.71875.0758.70166.73374.12781.53289.49997.477105.795114.2995.66102.489107.19238.42740.74243.07745.43447.81350.96454.14148.82751.06235.38637.78440.18342.58242.87644.8499.0896.1326.9327.7318.5569.39314.3619.00623.68228.37433.07437.564NA38.712NANA
us-gaap:FiniteLivedIntangibleAssetsNet ▃▄▅▃▄▄▅▆▇▇█▆▇▇▁▁▂▂▂▂▃▂▂▁▁▁▂▂▂58.46466.71875.0758.70166.73374.12781.53289.49997.477105.795114.2995.66102.489107.19238.42740.74243.07745.43447.81350.96454.14148.82751.06235.38637.78440.18342.58242.87644.849NA6.132NANANA9.39314.3619.006NA28.374NANANANANANA
us-gaap:OperatingLeaseRightOfUseAsset NANA18.301NANANA32.7734.26431.82233.928NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:EquitySecuritiesFvNi █▇▅▃▃▃▁▂▂▂▂69.12359.85342.04130.46629.97226.16312.917.30218.09818.3717.647NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:LongTermDebt ▃▁▃▃▅██19381.83518754.71519320.72619215.05319726.15820466.7320529.054NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:DebtAndCapitalLeaseObligations NANA19320.726NANANA20529.05420910.1921294.19221835.72322218.7422251.43322468.36421227.34921356.57322240.27922790.7823594.51624668.4925320.87826399.68627349.89128172.68228827.60328070.42327815.32428027.3528737.45629492.5625589.28725955.28924858.45524690.95225125.17725098.83522884.09623836.2524060.60924434.5424926.51223605.413NA24672.472NANA
us-gaap:MinorityInterest ▁▂▁▃▄▄▄▄▄▄▅▅▅▅▇█▇█▅▅▅▅▅▃▃▃▃▃▃▃▃▂▃▃▂▃▃▃▂-5.182-3.089-3.6933.3463.995.124.3824.5154.2924.29810.31510.2649.8349.47315.85818.58915.21519.489.279.0118.9168.6727.7260.2460.30.2710.230.2680.3860.7550.3280.050.1130.2810.0050.4170.2930.1570.0NANANANANANA
 us-gaap:MinorityInterest us-gaap:ConsolidatedEntities srt:ParentCompanyNANA0.377NANANA5.172NANANA4.188NANANA4.07NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo NANA3.857NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree NANA2.938NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour NANA1.562NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive NANA1.424NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive NANA4.437NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:StockholdersEquity ██▇▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▂▂▂▂▁▁▁▁▁2833.82752.192632.0422399.4852336.7962320.682386.7122350.152322.3262325.9962304.4642316.8642276.8692235.7532149.5292111.8512115.1942108.1872061.6551972.0851897.31878.2541884.4321835.1531805.1921781.2221725.4481657.2891579.7421512.9191443.6621377.8631319.4821226.1231165.2081175.8211144.6051107.7161066.205NANANANANANA
us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest ██▇▆▆▆▆▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▄▄▄▄▄▄▃▃▃▃▂▂▂▂▂▂▂▂▁▁▁▁2828.6182749.1012628.3492402.8312340.7862325.82391.0942354.6652326.6182330.2942314.7792327.1282286.7032245.2262165.3872130.442130.4092127.6672070.9251981.0961906.2161886.9261892.1581835.3991805.4921781.4931725.6781657.5571580.1281513.6741443.991377.9131319.5951226.4041165.2131176.2381144.8981107.8731066.2051011.483988.784955.367906.633844.614873.945
 us-gaap:CommonStockValue us-gaap:ConsolidatedEntities srt:ParentCompanyNANA0.384NANANA0.398NANANA0.403NANANA0.408NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassA▁▁▁▁▁▂▂▂▂▂▂▂▂▂▂▃▃▃▃▄▄▄▅▅▆▆▆▆▆▇▆▆▇▇▇▇▇▇▇▇█0.2750.2740.2720.2720.2720.2860.2850.2840.2840.2860.2880.2930.2930.2930.2930.2940.3040.3070.3060.3080.310.310.3250.3340.3370.3470.3480.3480.3490.350.3490.3490.350.350.3510.3580.3580.3580.3560.360.37NA0.368NANA
 us-gaap:CommonStockValue us-gaap:StatementClassOfStock us-gaap:CommonClassB▁▃▃▃▃▄▄▄▄████████████████████████████████0.1110.1120.1120.1120.1120.1130.1130.1130.1130.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.115NA0.115NANA
us-gaap:AdditionalPaidInCapital ▂▂▁▁▁▂▂▁▁▁▁▂▁▁▁▁▁▁▁▁▂▁▁▁▁▃▃▃▄▄▄▄▄▅▅███▇█10.1585.8593.7941.7041.8679.145.7153.6781.670.6360.6224.9082.5860.4480.5210.360.3662.2360.420.2244.6012.9130.01.4410.013.17717.2918.1520.72127.13824.88724.06827.00427.78632.5452.84352.19450.94849.24554.685NANA76.263NANA
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▆▆▆▆▆▆▆▆▆▆▆▅▅▅▅▅▅▅▄▄▄▄▄▄▄▃▃▃▂▂▂▂▂▂▁▁▁2812.3152736.9232621.7622393.1132331.3122310.2822377.6272343.1852317.1152321.4072299.5562307.5732271.1712231.8752143.9832106.8952110.1582100.2142056.0841971.8621894.5511873.51881.7081830.3871801.4571762.7111702.561633.5771552.9881482.6371413.4921347.6091289.4161192.8221129.3891124.8061092.7151056.0581017.629957.463NANA831.057NANA
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax █▇▅▄▄▃▄▄▄▄▄▄▄▄▅▄▄▅▅▂▁▃▃▄▄▅▅▅▅▄▅▅▄▅▄▁▂▃▂10.9419.0226.1024.2843.2330.8592.9722.893.1443.5523.8833.9752.7043.0224.6174.1874.2515.3154.73-0.424-2.2771.4162.2842.8763.2834.8725.1355.0995.5692.6794.8195.7222.5975.052.813-1.933-0.4090.6050.0NANANANANANA
us-gaap:MinorityInterest ▁▂▁▃▄▄▄▄▄▄▅▅▅▅▇█▇█▅▅▅▅▅▃▃▃▃▃▃▃▃▂▃▃▂▃▃▃▂-5.182-3.089-3.6933.3463.995.124.3824.5154.2924.29810.31510.2649.8349.47315.85818.58915.21519.489.279.0118.9168.6727.7260.2460.30.2710.230.2680.3860.7550.3280.050.1130.2810.0050.4170.2930.1570.0NANANANANANA
 us-gaap:MinorityInterest us-gaap:ConsolidatedEntities srt:ParentCompanyNANA0.377NANANA5.172NANANA4.188NANANA4.07NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:StockIssuedDuringPeriodValueNewIssues ▅▆▂▂▅█▂▂▄▇▂▂▅▆▁▁▃▆▁▁▃▇▁▁▃▇▁▁▃▆▁▁▂▄▂▁▃▆▁▁▃█▂▂▂1.8242.0910.4730.5531.662.9410.450.5241.3842.4940.5090.581.9112.1730.260.2780.9922.090.2750.2820.9542.7080.1820.2680.9452.4680.2130.2130.8832.2460.1460.2640.6951.2730.3680.2710.8522.4260.2660.3151.0283.0890.3880.6020.702
us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue █▆▅▅▅▅▅▅▅▄▅▅▄▃▃▃▃▃▂▃▃▃▄▄▄▄▄▄▃▃▂▂▂▂▂▂▂▁▁▁▁▁▁▁▁2.8741.9851.8311.8641.8571.7381.7381.7051.591.3681.6681.9341.5061.0870.981.0421.0751.0960.6381.1321.1331.1831.2311.2461.3531.3571.3031.2481.1350.8750.7940.8240.8080.6760.6150.5840.5930.3950.2940.310.3420.3550.3720.4050.366
us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders ▄▁█▁▂▁▁▃▁▁▁▁▁▁▂▂▁▁▁▁▁▁▁▁▁▁▃▁▂▁▁▁▁▁▁▁6.7270.10215.2030.3310.5340.0550.1253.8650.0910.0220.1740.0950.2380.0190.3710.7590.2050.310.3530.00.1220.0970.356-0.08-0.0440.03.594-0.2751.062-0.287-0.29-0.279-0.7820.0-0.4310.0NANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▄▄█▄▁▆▆▅▁▅▅▄▄▃▅▄▅▄▅▅▅▅▅▄▆▅▅▅▅▆▄▅▅▄▅▄▅▅▄▅▅▆▃138.95348.65839.78278.63638.854-144.455155.997160.753121.83-139.66577.335121.92613.67957.952-2.82798.20358.29973.83366.4383.59870.735104.49484.01115.3762.637129.34894.382106.59567.86888.604184.57449.4268.19584.99138.72199.3360.696100.57198.91643.7386.54981.667179.038-45.581NA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▅▄▅▅▄▅▅▅▅▅▄▂▄▅▅▅▆▅▆▆▅▅▅▅▄▅▅▂▅▅▄▅▄▁▆▄▅▅▅▅▅█▅-711.784468.362-332.418236.351611.614105.672331.951337.135469.179386.301204.154149.078-1187.913102.33747.47698.309772.8961051.415595.4611034.539899.735729.68569.244523.867292.42631.825447.965618.401-1516.385340.511402.658-180.513408.726-134.291-2168.141924.171114.481336.835309.583311.452466.336352.4522493.233251.921NA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▄▅▄▄▅▄▄▄▄▅▅▇▅▄▄▄▃▄▃▄▄▄▄▅▅▄▄▇▄▄▅▄▅█▄▅▄▄▄▄▄▁▅703.044-528.147349.492-534.761-829.491-83.48-403.554-413.678-588.637-387.402-84.564-239.8911213.315-177.076-932.282-611.36-870.116-1086.742-659.391-1110.236-962.251-846.669-704.223-707.019-272.829-191.608-486.445-742.5161433.514-385.28-575.356113.9-458.40333.3352101.777-986.082-179.622-419.276-458.023-379.429-484.681-669.783-2704.831-164.74NA
us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect ▇▄▅▄▁▂▆▆▄▂█▅▅▄▂▆▄▁130.182-11.20456.854-19.774-179.023-122.26384.39484.212.372-140.766196.92531.11339.081-16.794-143.08798.873-3.214-180.823NANANANANANANANANANANANANANANANANANANANANANANANANANANA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:DeferredIncomeTaxExpenseBenefit ▄▆▆▄▅▁▄▅▃▄▃▄▅▆▆▄▂▄█▅▂▄▆▃▄▄▄▆▄▄▃▃▆▅▅▃▂▃▅▃▃▄▅▃2.76815.40518.9493.78711.238-26.02.3275.431-12.216-2.807-12.5932.284.41116.88313.4680.237-13.496-1.75334.63812.627-16.0-4.2614.95-11.022.8950.224-1.73215.7383.1562.497-10.74-7.96516.374.8745.312-8.658-13.293-7.198.19-7.201-8.8150.18.565-11.521NA
us-gaap:DepreciationDepletionAndAmortization ▅▅▆▆▆▆▆▆▆▆▆▆▆▆▅▄▄▄▅▃▄▄▄▄▄▄▄▄▃▃▃▂▂▃█▂▁▄▆▂38.33938.41549.29849.89350.51948.76350.14348.39847.17346.94847.86647.59145.92443.30137.99733.02132.49534.3138.55921.6931.2231.07832.69130.85429.96630.22529.65129.11227.20721.99921.15419.1719.08120.07963.10418.1537.45228.07249.0118.621NANANANANA
us-gaap:IncreaseDecreaseInAccountsReceivable ▅▅▅▄▅▁█▅▄▆▃▆▄▅▄▅▆▅▄▅▄▄▄▅▅▅▄▅▄▅▄▄▄▅▄▅▅▅▅▅▅▅▄█5.6153.8314.595-3.86710.577-52.18548.3121.665-10.59916.571-18.38717.728-2.223-0.177-14.6110.38214.3021.972-9.43611.444-3.501-5.961-15.1493.7474.9255.416-8.5741.189-5.0635.758-6.879-3.065-7.2239.601-7.7614.3982.7860.5614.764.7821.30.198-16.09942.063NA
us-gaap:NetCashProvidedByUsedInOperatingActivities ▆▄▄█▄▁▆▆▅▁▅▅▄▄▃▅▄▅▄▅▅▅▅▅▄▆▅▅▅▅▆▄▅▅▄▅▄▅▅▄▅▅▆▃138.95348.65839.78278.63638.854-144.455155.997160.753121.83-139.66577.335121.92613.67957.952-2.82798.20358.29973.83366.4383.59870.735104.49484.01115.3762.637129.34894.382106.59567.86888.604184.57449.4268.19584.99138.72199.3360.696100.57198.91643.7386.54981.667179.038-45.581NA
us-gaap:NetIncomeLoss ▄▅█▄▄▁▃▃▃▃▃▃▃▅▃▃▃▃▅▄▃▃▄▃▄▄▄▄▄▄▄▄▅▄▃▃▃▃▄▃▃▃▄▂▃83.867123.598234.99171.50386.482-40.53242.3833.21224.61941.59121.62642.92749.435113.92548.146.30328.73750.02698.34684.29426.1547.96183.3548.95570.90964.76573.61185.21974.99473.78670.5262.83101.24368.07956.63436.82841.39443.14164.87947.45137.12554.8885.087-0.36849.993
us-gaap:ProfitLoss ▄▅█▄▄▁▃▃▃▃▃▃▃▅▃▃▃▃▅▄▃▃▄▃▄▄▄▄▄▄▄▄▅▄▃▃▃▃▄▃▃▃83.013122.904231.60671.17686.61-39.76541.83433.13524.67841.64721.67443.12649.539113.18545.71443.53524.65147.9298.93184.36326.17848.02983.51848.97770.96364.80673.91985.37675.68774.29971.08863.046101.85768.3556.65336.95241.5343.29364.87947.45137.12554.88NANANA
us-gaap:ShareBasedCompensation ▂▂█▂▂▂▂▂▂▁▂▂▂▁▁▁▁▁▁▁▁▁▁2.9282.05211.2011.9571.7241.8571.8331.811.6621.4761.7582.0461.5741.1611.0461.111.1391.1210.7851.1751.1461.2421.227NANANA1.3351.282NANA0.8160.955NANA0.8540.7540.7120.70.4550.4820.5350.5570.5610.6NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInInvestingActivities ▃▅▄▅▅▄▅▅▅▅▅▄▂▄▅▅▅▆▅▆▆▅▅▅▅▄▅▅▂▅▅▄▅▄▁▆▄▅▅▅▅▅█▅-711.784468.362-332.418236.351611.614105.672331.951337.135469.179386.301204.154149.078-1187.913102.33747.47698.309772.8961051.415595.4611034.539899.735729.68569.244523.867292.42631.825447.965618.401-1516.385340.511402.658-180.513408.726-134.291-2168.141924.171114.481336.835309.583311.452466.336352.4522493.233251.921NA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▂▃▆▆▄▅▄▄▄▄▅▅▆▅█▆▇▅▄▃▃▃▁▁▁▂▂▃▂▁▂▁▂▁▁▁▁▁▁▁▂▁▂▁10.88617.89832.61433.70421.43325.56124.81823.96618.90224.81328.54331.47136.94128.06849.34935.84244.34526.46920.78117.24414.31915.2584.0053.2371.1478.3724.79712.6695.8763.1465.292.1626.782.7782.5742.9652.0992.3064.3911.4955.2892.9925.2742.826NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▄▅▄▄▅▄▄▄▄▅▅▇▅▄▄▄▃▄▃▄▄▄▄▅▅▄▄▇▄▄▅▄▅█▄▅▄▄▄▄▄▁▅703.044-528.147349.492-534.761-829.491-83.48-403.554-413.678-588.637-387.402-84.564-239.8911213.315-177.076-932.282-611.36-870.116-1086.742-659.391-1110.236-962.251-846.669-704.223-707.019-272.829-191.608-486.445-742.5161433.514-385.28-575.356113.9-458.40333.3352101.777-986.082-179.622-419.276-458.023-379.429-484.681-669.783-2704.831-164.74NA
 us-gaap:RepaymentsOfLongTermDebt us-gaap:DebtInstrument,us-gaap:SubsequentEventType us-gaap:JuniorSubordinatedDebt,us-gaap:SubsequentEventNANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsOfDividendsCommonStock ███▄▄▅▅▁▁▁8.4758.4378.4357.6647.7337.9467.9397.1437.1717.232NANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▁▁▁▁█▁▁▁▃▃▄▁▁▂▂▆▃▁▂▂▁▆▄▃▅▂▁▁▂▁▁▁▁▂▃▁▁▁▂▃▁▁▁▄0.3992.0090.2134.61867.2741.2530.1490.22123.68316.35828.8110.1924.9111.4185.56545.13616.8261.3698.9487.6750.39952.06929.52615.61543.0897.9392.3764.0338.4350.8690.1214.0262.2856.70421.2930.2060.1991.1166.00420.5950.2250.310.13326.614NA
  2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30

Common Stock Value

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

us-gaap:CommonStockValue

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value384000.0398000.0403000.0408000.0
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

us-gaap:CommonStockValue us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value275000.0274000.0272000.0272000.0272000.0286000.0285000.0284000.0284000.0286000.0288000.0293000.0293000.0293000.0293000.0294000.0304000.0307000.0306000.0308000.0310000.0310000.0325000.0334000.0337000.0347000.0348000.0348000.0349000.0350000.0349000.0349000.0350000.0350000.0351000.0358000.0358000.0358000.0356000.0360000.0370000.0368000.0
Percentage of CommonStockValue0.00.070.80.00.00.071.60.00.00.071.50.00.00.071.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value111000.0112000.0112000.0112000.0112000.0113000.0113000.0113000.0113000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0
Percentage of CommonStockValue0.00.029.20.00.00.028.40.00.00.028.50.00.00.028.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding


Weighted
Period End2021-06-302020-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value3839464747474848484849
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Weighted
Period End2021-06-302020-06-302013-03-312012-03-31
Value38384646
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding98.398.699.299.6

nni:UnvestedRestrictedStockShareholders


Weighted
Period End2021-06-302020-06-302013-03-312012-03-31
Value0.6413940.561610.3857070.308422
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding1.71.40.80.7

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic


Weighted
Period End2021-06-302020-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-30
Value3839464747464848484849
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Weighted
Period End2021-06-302020-06-302013-03-312012-03-31
Value38384646
Percentage of WeightedAverageNumberOfSharesOutstandingBasic98.398.699.2100.0

nni:UnvestedRestrictedStockShareholders


Weighted
Period End2021-06-302020-06-302013-03-312012-03-31
Value0.6413940.561610.3857070.308422
Percentage of WeightedAverageNumberOfSharesOutstandingBasic1.71.40.80.7

Weighted Average Number Of Share Outstanding Basic And Diluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted


Weighted
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value383839393940404040404142424242434545464646464646464747
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:WeightedAverageNumberOfShareOutstandingBasicAndDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Weighted
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value383738393939394040404141414242424445454546464646464747
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted98.598.698.698.698.798.798.798.798.899.099.099.099.099.099.098.998.998.998.999.099.099.199.199.199.299.299.2

nni:UnvestedRestrictedStockShareholders


Weighted
Period End2021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-30
Value0.5722880.5498920.561610.550060.5208180.5314130.5181730.5471820.4752580.4086580.4068920.412550.4407930.4426330.4419310.4572860.4772580.4945270.4907170.4844250.4535080.4169650.4098690.4162820.3857070.3741260.38586
Percentage of WeightedAverageNumberOfShareOutstandingBasicAndDiluted1.51.41.41.41.31.31.31.31.21.01.01.01.01.01.01.11.11.11.11.01.00.90.90.90.80.80.8

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareBasic


Earnings
Period End2021-06-302020-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.162.211.20.780.870.911.370.980.761.131.73-0.011.0
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasic us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Earnings
Period End2021-06-302020-06-30
Value2.162.21
Percentage of EarningsPerShareBasic100.0100.0

nni:UnvestedRestrictedStockShareholders


Earnings
Period End2021-06-302020-06-30
Value2.162.21
Percentage of EarningsPerShareBasic100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted

us-gaap:EarningsPerShareDiluted


Earnings
Period End2021-06-302020-06-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2.162.211.190.770.870.911.370.980.761.131.73-0.010.99
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Earnings
Period End2021-06-302020-06-30
Value2.162.21
Percentage of EarningsPerShareDiluted100.0100.0

nni:UnvestedRestrictedStockShareholders


Earnings
Period End2021-06-302020-06-30
Value2.162.21
Percentage of EarningsPerShareDiluted100.0100.0

Earnings Per Share Basic And Diluted

us-gaap:EarningsPerShareBasicAndDiluted

us-gaap:EarningsPerShareBasicAndDiluted


Earnings
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.26.11.862.21-1.011.060.830.611.030.531.051.212.781.171.110.681.182.321.980.611.111.861.091.541.41.591.841.611.591.521.352.171.461.20.780.870.91
Percentage of EarningsPerShareBasicAndDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EarningsPerShareBasicAndDiluted us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Earnings
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.26.031.862.21-1.011.060.830.611.030.531.051.212.781.171.110.681.182.321.980.611.111.861.091.541.41.591.841.611.591.521.352.171.461.20.780.870.91
Percentage of EarningsPerShareBasicAndDiluted100.098.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:UnvestedRestrictedStockShareholders


Earnings
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value3.26.031.862.21-1.011.060.830.611.030.531.051.212.781.171.110.681.182.321.980.611.111.861.091.541.41.591.841.611.591.521.352.171.461.20.780.870.91
Percentage of EarningsPerShareBasicAndDiluted100.098.9100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTax


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value851262367288-42.64542322441214449113484627501038622478248696473847771696598706135404364473754
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating64.298.0170.651.958.5-22.520.013.89.816.58.518.421.455.724.723.514.327.555.643.912.124.542.925.739.037.039.944.744.045.141.541.261.944.739.323.326.628.441.230.126.639.7

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-854000.0-694000.0-3385000.0-327000.0128000.0767000.0-547000.0-77000.059000.056000.049000.0199000.0104000.0-740000.0-2385000.0-2768000.0-4086000.0-2106000.0585000.069000.028000.068000.0168000.022000.054000.041000.0157000.0693000.0513000.0216000.0614000.0271000.019000.0124000.0136000.0152000.00000
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating-0.6-0.5-2.4-0.20.10.4-0.3-0.00.00.00.00.10.0-0.4-1.2-1.4-2.1-1.10.30.00.00.00.10.00.00.00.10.40.30.10.40.20.00.10.10.10.00.00.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest


Comprehensive
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value841252337288-41.87841322441214449112464323481048622478248696473847872706699706135404364473754
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating63.697.5168.151.758.6-22.119.713.89.816.58.618.521.555.423.522.112.226.455.943.912.124.642.925.739.037.140.144.844.445.441.841.362.344.939.423.426.628.541.230.126.639.7

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold

us-gaap:CostOfGoodsAndServicesSold


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2127243121282430202520231517141711
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating16.221.017.522.313.915.011.512.98.510.38.19.86.68.67.39.06.1

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

us-gaap:OperatingSegments, nni:CommunicationsServices, nni:CommunicationsSegment


Cost
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.5725.9145.7435.5825.3275.2365.1014.7595.0344.313.8653.7173.1612.6322.203
Percentage of CostOfGoodsAndServicesSold22.919.027.219.721.916.924.318.424.518.425.521.422.014.818.8
Percentage of InterestAndDividendIncomeOperating4.04.23.83.02.52.22.11.92.01.81.71.81.61.31.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsServices nni:CommunicationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServices, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value212718251522192515211519111311159.515
Percentage of CostOfGoodsAndServicesSold100.0100.077.181.072.880.378.183.175.781.675.581.674.578.678.085.281.2
Percentage of InterestAndDividendIncomeOperating16.221.013.518.110.112.18.910.76.48.46.18.04.96.75.77.74.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServices nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CostOfGoodsAndServicesSold us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:CommunicationsSegment


Cost
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.5725.9145.7435.5825.3275.2365.1014.7595.0344.313.8653.7173.1612.6322.203
Percentage of CostOfGoodsAndServicesSold22.919.027.219.721.916.924.318.424.518.425.521.422.014.818.8
Percentage of InterestAndDividendIncomeOperating4.04.23.83.02.52.22.11.92.01.81.71.81.61.31.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.0510100.0237950.00.0431000.0386500.0371700.00.0263200.0220300.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value212718251522192515211519111311159.515
Percentage of CostOfGoodsAndServicesSold100.0100.077.181.072.880.378.183.175.781.675.581.674.578.678.085.281.2
Percentage of InterestAndDividendIncomeOperating16.221.013.518.110.112.18.910.76.48.46.18.04.96.75.77.74.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment10321.910285.90.06878.23661.01145.50.0733.7956.71044.10.01261.51513.02057.60.0303020.0317166.7

us-gaap:CostOfGoodsAndServicesSold us-gaap:ProductOrService

nni:CommunicationsServices


Cost
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value5.5735.9145.7435.5825.3275.2365.1014.7595.0334.313.8653.7173.1612.6322.203
Percentage of CostOfGoodsAndServicesSold22.919.027.219.721.916.924.318.424.518.425.521.422.014.818.8
Percentage of InterestAndDividendIncomeOperating4.04.23.83.02.52.22.11.92.01.81.71.81.61.31.1
Percentage of InterestAndDividendIncomeOperating nni:CommunicationsServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:EducationTechnologyServicesAndPaymentProcessingServices


Cost
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value212718251522192515211519111311159.515
Percentage of CostOfGoodsAndServicesSold100.0100.077.181.072.880.378.183.175.781.675.581.674.578.678.085.281.2
Percentage of InterestAndDividendIncomeOperating16.221.013.518.110.112.18.910.76.48.46.18.04.96.75.77.74.9
Percentage of InterestAndDividendIncomeOperating nni:EducationTechnologyServicesAndPaymentProcessingServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Gain Loss On Investments

us-gaap:GainLossOnInvestments

us-gaap:GainLossOnInvestments


Gain
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-09-302019-06-302012-12-312012-09-302011-12-312011-09-30
Value158.49811-10.15253-1.0251.9484.2580.9944.2546.939-4.084
Percentage of GainLossOnInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating11.76.68.6-7.335.0-0.50.81.70.62.84.4-2.6

us-gaap:GainLossOnInvestments us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

nni:ALLOVotingMembershipInterestsInvestment


Gain
Period End2021-06-302021-03-31
Value1.094-22.219
Percentage of GainLossOnInvestments7.0-261.5
Percentage of InterestAndDividendIncomeOperating0.8-17.2
Percentage of InterestAndDividendIncomeOperating nni:ALLOVotingMembershipInterestsInvestment0.00.0

nni:SolarInvestment


Gain
Period End2021-06-302021-03-312020-06-302020-03-31
Value-2.302-1.6792.04-2.839
Percentage of GainLossOnInvestments-14.8-19.83.8277.0
Percentage of InterestAndDividendIncomeOperating-1.7-1.31.3-1.5
Percentage of InterestAndDividendIncomeOperating nni:SolarInvestment0.00.00.00.0

Gains Losses On Extinguishment Of Debt

us-gaap:GainsLossesOnExtinguishmentOfDebt

us-gaap:GainsLossesOnExtinguishmentOfDebt


Gains
Period End2020-12-312020-09-302019-12-312019-09-302018-12-312018-09-30
Value1416000.0105000.0-874000.0-14014000.000
Percentage of GainsLossesOnExtinguishmentOfDebt100.0100.0100.0100.00.00.0
Percentage of InterestAndDividendIncomeOperating1.00.1-0.4-5.90.00.0

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

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-30
Value10915730290107-49.8985041305317576314940694076153132417213075111102131118114931561065856667158
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating81.8122.2217.664.671.0-26.423.917.612.521.26.823.827.573.520.535.121.141.782.267.322.137.767.840.262.658.869.667.172.358.398.268.038.837.143.245.641.7

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-2.142-29.65210-23.42637-22.646-13.637-11.216-8.822-14.073
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-2.0-18.869.6-25.934.545.4-26.8-26.7-28.6-26.5
Percentage of InterestAndDividendIncomeOperating-1.6-23.0151.5-16.824.5-12.0-6.4-4.7-3.6-5.6
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment-140.6-2379.60.0-1423.23113.9-1456.30.0-392.3-390.7-685.5

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value78141828951-60.94550251226185156115605734
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest72.289.827.299.547.6122.199.861.241.550.1107.390.589.177.6150.283.484.5
Percentage of InterestAndDividendIncomeOperating59.1109.759.364.333.8-32.223.910.75.210.67.321.524.557.030.729.317.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment60.7112.00.065.234.1-32.80.011.05.310.80.021.924.857.80.029.618.0

us-gaap:OperatingSegments, nni:CommunicationsSegment


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-14.31-4.539-7.057-7.284-8.66-9.466-6.49-6.329-7.734-10.185-10.634-9.263-8.791-7.423-5.866
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-4.7-5.0-6.514.6-17.0-22.6-21.0-11.9-45.3-17.9-16.9-6.2-21.9-10.7-14.4
Percentage of InterestAndDividendIncomeOperating-10.3-3.2-4.6-3.9-4.1-4.0-2.6-2.5-3.1-4.2-4.6-4.6-4.5-3.8-3.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.0-649000.0-316450.00.0-1018500.0-1063400.0-926300.00.0-742300.0-586600.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1730121511279.542161124-1.5579.9887.421173.8659.2647.991
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest15.819.64.016.710.8-54.818.839.935.747.1-9.117.511.811.89.613.419.6
Percentage of InterestAndDividendIncomeOperating12.924.08.710.87.714.54.57.04.510.0-0.64.23.28.72.04.74.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment8205.711777.20.04098.92783.61373.80.0478.0664.21238.50.0660.1992.12647.20.0185280.0266366.7

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value15161113141312202221181317207.1939.5858.716
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest14.210.23.914.813.5-27.325.348.372.441.3111.123.028.013.417.913.921.4
Percentage of InterestAndDividendIncomeOperating11.612.58.59.59.67.26.08.59.18.77.55.57.79.93.74.94.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment51710.047305.90.039235.328073.14297.50.03807.14068.04408.20.03447.26035.57796.10.06520.47263.3

us-gaap:OperatingSegments, nni:NelnetBank


Income
Period End2021-06-302021-03-31
Value-0.268-1.254
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-0.2-0.8
Percentage of InterestAndDividendIncomeOperating-0.2-1.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank-13.1-91.1

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit

us-gaap:IncomeTaxExpenseBenefit


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2634701921-10.1339.0228.8296.20911-4.599131335-5.486251628544715244726403730464340-37.556305438-36.099211423-39.00824213251-0.22629
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating19.627.050.813.714.0-5.44.23.72.54.5-1.85.85.917.7-2.813.08.315.629.124.38.112.724.514.322.721.616.324.624.325.6-22.419.034.324.5-23.114.49.815.1-24.815.515.123.833.8-0.119.1

us-gaap:IncomeTaxExpenseBenefit us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.497-10.13348-8.1464.312-3.592-6.457-3.935-3.321-4.716
Percentage of IncomeTaxExpenseBenefit-1.9-29.168.8-42.520.335.4-71.6-44.6-53.5-41.4
Percentage of InterestAndDividendIncomeOperating-0.4-7.835.0-5.82.8-1.9-3.0-1.6-1.3-1.9
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment-32.6-813.20.0-494.9360.5-231.00.0-137.6-147.1-229.7

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1833192112-14.627126.163.0746.3724.397121327222113
Percentage of IncomeTaxExpenseBenefit72.297.528.0112.758.0144.4135.169.849.555.9-95.689.299.877.2-418.485.781.4
Percentage of InterestAndDividendIncomeOperating14.226.314.215.48.1-7.75.72.61.22.51.75.25.913.711.711.16.8
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment14.626.90.015.68.2-7.90.02.61.32.60.05.26.013.90.011.26.8

us-gaap:OperatingSegments, nni:CommunicationsSegment


Income
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-3.434-1.089-1.694-1.748-2.078-2.272-1.558-1.519-1.855-2.444-2.552-2.223-3.341-2.821-2.229
Percentage of IncomeTaxExpenseBenefit-4.9-5.7-8.017.3-23.0-25.7-25.1-13.340.3-17.6-18.9-6.260.9-11.0-13.9
Percentage of InterestAndDividendIncomeOperating-2.5-0.8-1.1-0.9-1.0-1.0-0.6-0.6-0.7-1.0-1.1-1.1-1.7-1.4-1.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.0-155800.0-75950.00.0-244400.0-255200.0-222300.00.0-282100.0-222900.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4.1367.4342.9073.612.8066.5652.294.0142.6455.995-0.3742.3971.7814.2251.4683.523.037
Percentage of IncomeTaxExpenseBenefit15.821.34.118.813.2-64.825.445.542.652.68.117.313.211.7-26.813.818.9
Percentage of InterestAndDividendIncomeOperating3.15.82.12.61.83.51.11.71.12.4-0.11.00.82.10.71.81.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment1969.52826.60.0983.7668.1329.70.0114.7159.4297.20.0158.4238.1635.30.070400.0101233.3

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3.7233.862.8363.2013.5043.2693.0824.8615.375.2584.5553.1524.2455.0033.7184.9374.918
Percentage of IncomeTaxExpenseBenefit14.211.14.016.716.5-32.334.255.186.546.2-99.022.731.413.9-67.819.330.7
Percentage of InterestAndDividendIncomeOperating2.83.02.02.32.31.71.52.02.22.11.81.31.92.51.92.52.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment12410.011352.90.09414.76738.51031.20.0913.7976.41057.90.0827.31448.81946.70.03358.54098.3

us-gaap:OperatingSegments, nni:NelnetBank


Income
Period End2021-06-302021-03-31
Value-0.064-0.286
Percentage of IncomeTaxExpenseBenefit-0.2-0.8
Percentage of InterestAndDividendIncomeOperating-0.0-0.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank-3.1-20.8

Income Taxes Paid Net

us-gaap:IncomeTaxesPaidNet

us-gaap:IncomeTaxesPaidNet


Income
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value140.199165.4647.8690.082.8523.29111-0.0096.9640.79923-30.5692525451.182731541.3234237670.045363570134044645.4892729542.92353431322825
Percentage of IncomeTaxesPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating10.50.211.73.95.20.01.31.44.7-0.02.80.310.2-15.112.912.823.30.614.916.129.40.722.219.737.80.020.018.639.78.423.928.040.43.517.919.635.61.922.621.822.223.418.716.1

Interest Expense

us-gaap:InterestExpense

us-gaap:InterestExpense


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value49275258851341481721861911821801711351231211131061079694908077727172716960595558586566676964605152546859
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating37.421.537.741.856.170.969.772.275.876.572.475.174.866.862.861.858.658.257.649.150.547.141.940.840.941.139.038.039.137.835.234.536.437.141.943.844.445.040.738.636.537.936.142.537.8

us-gaap:InterestExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.0930.824-0.1950.8881.0781.407-0.2092.113.8723.814
Percentage of InterestExpense2.23.0-0.41.51.31.0-0.11.22.12.0
Percentage of InterestAndDividendIncomeOperating0.80.6-0.10.60.70.7-0.10.91.61.5
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment71.766.10.053.990.190.50.073.8171.5185.8

us-gaap:IntersegmentElimination


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-0.187-0.218-0.252-0.261-0.368-0.598-0.801-1.171-0.974-0.851-0.569-4.846-4.425-3.15-2.702-2.139-1.776-1.359-2.52-0.93
Percentage of InterestExpense-0.4-0.8-0.5-0.4-0.4-0.4-0.5-0.7-0.5-0.4-0.3-2.7-2.6-2.3-2.2-1.8-1.6-1.3-2.3-1.0
Percentage of InterestAndDividendIncomeOperating-0.1-0.2-0.2-0.2-0.2-0.3-0.4-0.5-0.4-0.3-0.2-2.0-1.9-1.6-1.4-1.1-0.9-0.7-1.4-0.5
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value4826525784133149171184188181176169134123121113
Percentage of InterestExpense97.497.0100.798.999.199.4100.699.498.498.599.498.298.999.0100.099.599.9
Percentage of InterestAndDividendIncomeOperating36.420.937.941.355.670.470.271.874.675.372.073.774.066.262.761.558.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment37.421.30.041.956.171.70.073.575.676.50.074.974.967.00.062.159.1

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Interest
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.00.0160.0210.0170.0140.0120.0110.0080.0060.0030.00.00.00.00.0
Percentage of InterestExpense0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment0.04.45.00.90.00.30.70.40.00.20.00.00.00.00.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0230.0230.0240.0240.0280.0440.0450.0510.0190.00.00.00.00.00.0030.00.0
Percentage of InterestExpense0.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment76.767.60.070.653.813.90.09.63.50.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:NelnetBank


Interest
Period End2021-06-302021-03-31
Value0.3920.194
Percentage of InterestExpense0.80.7
Percentage of InterestAndDividendIncomeOperating0.30.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank19.214.1

Interest Income Expense Net

us-gaap:InterestIncomeExpenseNet

us-gaap:InterestIncomeExpenseNet


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value831018681665564665958695957677375797678999210111211110510211211710798108104101989085848493968885969297
Percentage of InterestIncomeExpenseNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.678.562.358.243.929.130.327.824.223.527.624.925.233.237.238.241.441.842.450.949.552.958.159.259.158.961.062.060.962.264.865.563.662.958.156.255.655.059.361.463.562.163.957.562.2

us-gaap:InterestIncomeExpenseNet us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4310.4221.5730.7580.1180.1482.2710.749-1.614-1.761
Percentage of InterestIncomeExpenseNet0.50.41.80.90.20.33.51.1-2.7-3.0
Percentage of InterestAndDividendIncomeOperating0.30.31.10.50.10.11.10.3-0.7-0.7
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment28.333.90.046.19.99.50.026.2-71.5-85.8

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8199848066525961595866595666727378
Percentage of InterestIncomeExpenseNet97.398.197.498.699.295.692.692.999.198.796.399.098.598.298.698.298.1
Percentage of InterestAndDividendIncomeOperating60.977.060.757.443.527.828.025.824.023.226.624.724.832.636.737.540.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment62.678.70.058.143.928.30.026.524.423.50.025.125.133.00.037.940.9

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.210.2630.2590.3510.3991.9742.0553.4871.6482.0091.521.510.7480.6650.0070.0050.003
Percentage of InterestIncomeExpenseNet0.30.30.30.40.63.63.25.22.83.42.22.51.31.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.20.20.20.30.31.01.01.50.70.80.60.60.30.30.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment100.0100.00.095.695.099.10.099.799.399.60.099.8100.0100.00.0100.0100.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0070.0110.0090.010.0240.2730.4070.4810.5310.4970.420.3810.2930.2570.1490.1470.12
Percentage of InterestIncomeExpenseNet0.00.00.00.00.00.50.60.70.90.80.60.60.50.40.20.20.2
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.10.20.20.20.20.20.20.10.10.10.10.1
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment23.332.40.029.446.286.10.090.496.5100.00.0100.0100.0100.00.0100.0100.0

us-gaap:OperatingSegments, nni:NelnetBank


Interest
Period End2021-06-302021-03-31
Value1.6491.182
Percentage of InterestIncomeExpenseNet2.01.2
Percentage of InterestAndDividendIncomeOperating1.20.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank80.885.9

Interest Paid Net

us-gaap:InterestPaidNet

us-gaap:InterestPaidNet


Interest
Period End2021-06-302021-03-312020-06-302020-03-312019-12-312019-09-302018-12-312018-09-30
Value393983125138163165165
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating29.430.755.366.265.468.565.669.1

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value831232347186-40.5324233244121424911348462850988426478348706473857473706210168563641436447375485-0.36849
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.895.7169.351.256.9-21.420.013.910.016.68.617.921.656.224.523.514.927.252.843.014.025.043.225.939.937.239.945.042.446.442.039.263.543.336.324.327.228.041.230.126.639.756.4-0.231.9

us-gaap:NetIncomeLoss us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value821212317085-39.974413224412142481124745284997832547824870647284747369621006756364142
Percentage of NetIncomeLoss98.398.598.698.698.698.698.798.798.798.798.498.798.899.099.099.099.099.099.099.099.098.998.998.998.998.998.999.099.099.199.199.199.199.299.299.299.299.4
Percentage of InterestAndDividendIncomeOperating61.794.3166.950.456.1-21.119.713.79.816.48.417.721.355.624.223.314.726.952.242.513.924.742.725.639.536.839.544.542.046.041.638.962.943.036.024.127.027.8
Percentage of InterestAndDividendIncomeOperating nni:CommonShareholders0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:UnvestedRestrictedStockShareholders


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.3881.8323.3341.021.239-0.5580.5590.4340.3270.5340.3370.5730.5751.1370.4750.4530.280.5211.0320.8750.2710.5090.8850.5190.7630.6870.7960.8890.7310.6610.6180.5530.9040.5620.4390.290.3360.279
Percentage of NetIncomeLoss1.71.51.41.41.41.41.31.31.31.31.61.31.21.01.01.01.01.01.01.01.01.11.11.11.11.11.11.01.00.90.90.90.90.80.80.80.80.6
Percentage of InterestAndDividendIncomeOperating1.01.42.40.70.8-0.30.30.20.10.20.10.20.30.60.20.20.10.30.60.40.10.30.50.30.40.40.40.50.40.40.40.30.60.40.30.20.20.2
Percentage of InterestAndDividendIncomeOperating nni:UnvestedRestrictedStockShareholders0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.791-19.534165-14.95332-19.821-6.633-7.204-5.56-9.413
Percentage of NetIncomeLoss-0.9-15.870.3-20.937.948.9-15.7-21.7-22.6-22.6
Percentage of InterestAndDividendIncomeOperating-0.6-15.1119.0-10.721.6-10.5-3.1-3.0-2.3-3.8
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment-51.9-1567.70.0-908.42742.6-1274.70.0-252.0-246.2-458.5

us-gaap:IntersegmentElimination


Net
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.7110.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of NetIncomeLoss0.60.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination-326.1-0.0-0.00.0-0.0-0.0-0.00.0-0.0-0.0-0.00.0-0.0-0.0-0.00.0-0.0

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value59107626839-46.31838199.7322013394287373521
Percentage of NetIncomeLoss71.587.126.695.645.2114.391.058.739.548.564.491.386.477.277.977.274.1
Percentage of InterestAndDividendIncomeOperating44.983.445.148.925.7-24.518.28.23.98.15.516.318.643.419.018.211.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment46.185.10.049.525.9-24.90.08.44.08.20.016.618.943.90.018.311.1

us-gaap:OperatingSegments, nni:CommunicationsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-10.876-3.45-5.363-5.536-6.582-7.194-4.932-4.81-5.879-7.741-8.082-7.04-5.45-4.602-3.637
Percentage of NetIncomeLoss-4.6-4.8-6.213.7-15.5-21.7-20.0-11.6-27.2-18.0-16.3-6.2-11.3-9.9-12.7
Percentage of InterestAndDividendIncomeOperating-7.8-2.5-3.5-2.9-3.1-3.0-2.0-1.9-2.3-3.2-3.5-3.5-2.8-2.3-1.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.0-493200.0-240500.00.0-774100.0-808200.0-704000.00.0-460200.0-363700.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value13239.207118.885207.252128.37418-1.1837.5915.64132.3975.7444.954
Percentage of NetIncomeLoss15.619.03.916.010.3-51.317.138.334.045.6-5.517.711.411.75.012.417.2
Percentage of InterestAndDividendIncomeOperating9.818.26.68.25.811.03.45.33.47.6-0.53.22.56.61.22.92.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment6236.28950.60.03115.32115.51044.00.0363.3504.8941.30.0501.7754.02011.90.0114880.0165133.3

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value11128.981011109.759151716149.98213156.0658.0568.024
Percentage of NetIncomeLoss14.19.93.814.212.8-25.523.046.369.140.066.723.327.213.912.617.427.9
Percentage of InterestAndDividendIncomeOperating8.89.56.57.37.35.54.66.46.96.65.74.25.97.83.14.14.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment39300.035952.90.029820.621334.63266.20.02893.43091.63350.30.02619.94586.76163.80.05480.36686.7

us-gaap:OperatingSegments, nni:NelnetBank


Net
Period End2021-06-302021-03-31
Value-0.204-0.968
Percentage of NetIncomeLoss-0.2-0.8
Percentage of InterestAndDividendIncomeOperating-0.2-0.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank-10.0-70.3

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value-0.854-0.694-3.385-0.3270.1280.767-0.546-0.0770.0590.0560.0480.1990.104-0.74-2.386-2.768-4.086-2.1060.5850.0690.0280.0680.1680.0220.0540.0410.3080.1570.6930.5130.5680.2160.6140.2710.0190.1240.1360.1520.00.00.00.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating-0.6-0.5-2.4-0.20.10.4-0.3-0.00.00.00.00.10.0-0.4-1.2-1.4-2.1-1.10.30.00.00.00.10.00.00.00.20.10.40.30.30.10.40.20.00.10.10.10.00.00.00.0

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.8540.017-3.385-0.3270.1280.767-0.547-0.0770.0590.056
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0-2.4100.0100.0100.0100.0100.2100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-0.60.0-2.4-0.20.10.4-0.3-0.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment-56.01.40.0-19.910.749.30.0-2.72.62.7

us-gaap:IntersegmentElimination


Net
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-0.7110.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of NetIncomeLossAttributableToNoncontrollingInterest102.40.00.0-0.0-0.00.00.00.00.00.0-0.0-0.0-0.0-0.0-0.00.00.0
Percentage of InterestAndDividendIncomeOperating-0.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination326.1-0.0-0.00.0-0.0-0.0-0.00.0-0.0-0.0-0.00.0-0.0-0.0-0.00.0-0.0

Operating Expenses

us-gaap:OperatingExpenses

us-gaap:OperatingExpenses


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value17117221319118519019920218117918718517615113612511911411510610711111712011511511411711210711110710210610910410811110210410099131160108
Percentage of OperatingExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating128.6133.7153.7136.8122.3100.994.184.873.471.574.477.376.974.869.463.761.662.662.254.457.758.160.763.965.266.262.362.063.767.666.567.264.568.070.069.271.272.165.366.571.972.287.099.969.1

us-gaap:OperatingExpenses us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value21233221191720191515
Percentage of OperatingExpenses12.813.815.211.210.69.010.09.58.78.7
Percentage of InterestAndDividendIncomeOperating16.418.523.315.312.99.09.48.06.46.2
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment1441.81917.20.01303.01641.61099.30.0671.4701.2762.6

us-gaap:IntersegmentElimination


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-8.483-8.271-8.645-8.29-8.54-11.065-11.325-11.611-11.598-12.217-12.412-12.29-11.609-10.771-10.835-10.563-9.952-10.323-10.945-11.021
Percentage of OperatingExpenses-4.9-4.8-4.1-4.3-4.6-5.8-5.7-5.7-6.4-6.8-6.6-6.6-6.6-7.1-7.9-8.4-8.4-9.0-9.5-10.3
Percentage of InterestAndDividendIncomeOperating-6.4-6.4-6.2-5.9-5.6-5.8-5.3-4.9-4.7-4.9-4.9-5.1-5.1-5.3-5.5-5.4-5.2-5.6-5.9-5.6
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination4536.43794.00.03176.22320.71850.30.0991.51190.81435.60.0253.6262.4341.90.0493.8560.4759.60.01185.1

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1212131214161731181616161615161916
Percentage of OperatingExpenses7.47.46.26.87.78.48.715.410.19.29.09.09.410.012.215.814.2
Percentage of InterestAndDividendIncomeOperating9.59.89.69.39.48.58.213.07.46.66.77.07.27.58.410.08.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment9.810.00.09.49.58.60.013.37.56.70.07.17.37.60.010.18.8

us-gaap:OperatingSegments, nni:CommunicationsSegment


Operating
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value281920202121171616141312119.9928.279
Percentage of OperatingExpenses13.310.111.110.610.710.59.79.18.67.87.88.18.68.07.0
Percentage of InterestAndDividendIncomeOperating20.413.813.610.710.08.97.16.56.46.06.06.05.95.14.3
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.01751000.0812000.00.01447000.01378700.01222700.00.0999200.0827900.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3837343432353735353542303029282525
Percentage of OperatingExpenses22.121.716.218.117.618.618.717.419.419.622.516.617.519.520.720.721.8
Percentage of InterestAndDividendIncomeOperating28.529.024.824.721.518.817.614.814.214.016.712.913.414.614.413.213.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment18098.614257.80.09417.47771.21783.10.01010.12115.71741.60.02038.64111.24451.00.0518960.0865900.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Operating
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value10510411311110611311510710610710811411092595758
Percentage of OperatingExpenses61.660.753.158.157.659.257.653.058.560.257.961.562.860.943.845.548.9
Percentage of InterestAndDividendIncomeOperating79.281.281.679.570.459.854.245.043.043.043.147.548.345.630.429.030.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment352563.3308308.80.0326776.5205613.535668.50.020190.819275.821685.50.029938.137788.135963.00.038826.548545.8

us-gaap:OperatingSegments, nni:NelnetBank


Operating
Period End2021-06-302021-03-31
Value1.8522.036
Percentage of OperatingExpenses1.11.2
Percentage of InterestAndDividendIncomeOperating1.41.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank90.7148.0

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

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax


Other
Period End2021-06-302021-03-31
Value-1000.01000.0
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0
Percentage of InterestAndDividendIncomeOperating-0.00.0

Other Comprehensive Income Loss Net Of Tax

us-gaap:OtherComprehensiveIncomeLossNetOfTax

us-gaap:OtherComprehensiveIncomeLossNetOfTax


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1919000.02920000.01818000.01051000.02374000.0-2113000.082000.0-254000.0-408000.0-331000.0-92000.01271000.0-318000.0-852000.0430000.0-64000.0-1064000.0585000.05154000.01853000.0-3693000.0-868000.0-592000.0-407000.0-1589000.0-263000.036000.0-470000.02890000.0-2140000.0-903000.03125000.0-2453000.02237000.04746000.0-1524000.0-1014000.0605000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.42.31.30.81.6-1.10.0-0.1-0.2-0.1-0.00.5-0.1-0.40.2-0.0-0.60.32.80.9-2.0-0.5-0.3-0.2-0.9-0.20.0-0.21.6-1.3-0.52.0-1.51.43.0-1.0-0.70.4

us-gaap:OtherComprehensiveIncomeLossNetOfTax us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1919000.02920000.01818000.01051000.02374000.0-2113000.082000.0-254000.0-408000.0-331000.0-92000.01271000.0-318000.0-852000.0430000.0-64000.0-1064000.0585000.05154000.01853000.0-3693000.0-868000.0-592000.0-407000.0-1589000.0-263000.036000.0-470000.02890000.0-2140000.0-903000.03125000.0-2453000.02237000.04746000.0-1524000.0-1014000.0605000.0
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating1.42.31.30.81.6-1.10.0-0.1-0.2-0.1-0.00.5-0.1-0.40.2-0.0-0.60.32.80.9-2.0-0.5-0.3-0.2-0.9-0.20.0-0.21.6-1.3-0.52.0-1.51.43.0-1.0-0.70.4
Percentage of InterestAndDividendIncomeOperating us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Income

us-gaap:OtherIncome

us-gaap:OtherIncome


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-12.351.502608.2812613169.0679.998169.58187.95219121215159.765136.6846.5237.5046.918127.651518158.613129.4167.023128.810123.9316.8266.4926.1229.4328.496
Percentage of OtherIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-8.91.139.64.412.55.66.53.64.06.94.29.04.010.06.56.98.27.75.27.23.53.44.24.07.04.08.711.49.55.47.76.04.58.45.87.17.82.54.94.74.15.95.4

us-gaap:OtherIncome us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-17.466-2.737572.0834.1277.2318.6243.344
Percentage of OtherIncome141.4-182.294.925.215.653.853.436.9
Percentage of InterestAndDividendIncomeOperating-12.6-2.037.61.11.93.03.51.3
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment0.0-166.34773.3134.00.0252.9381.9162.9

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2.2381.0040.7323.215183.3844.8883.5253.6913.2672.7723.3512.7052.7533.057
Percentage of OtherIncome-18.166.81.238.870.025.230.338.936.919.628.918.434.013.924.5
Percentage of InterestAndDividendIncomeOperating1.60.70.51.78.71.42.01.41.51.41.21.71.41.41.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment0.00.70.51.70.01.52.01.40.01.41.21.70.01.41.6

us-gaap:OperatingSegments, nni:CommunicationsSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-09-302017-06-30
Value0.3050.5110.3920.3530.490.5320.3620.1250.1250.950.00.00.00.0
Percentage of OtherIncome-2.534.00.74.31.84.02.21.41.35.70.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.20.40.30.20.20.20.10.00.00.40.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.036200.06250.00.095000.00.00.00.00.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.00.3730.00.00.2590.00.00.00.00.00.00.00.00.00.0
Percentage of OtherIncome-0.024.80.00.01.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.00.30.00.00.10.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment0.0101.60.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Other
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2.5242.3531.9142.633.0942.2912.2772.0742.0881.9481.9561.2920.00.00.0
Percentage of OtherIncome-20.4156.73.231.811.717.014.122.920.911.720.47.10.00.00.0
Percentage of InterestAndDividendIncomeOperating1.81.71.31.41.51.00.90.80.80.80.90.60.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment0.06920.63680.8829.70.0430.6414.0417.30.0511.3667.6502.70.00.00.0

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value831222317186-39.76541332441214349113454324479884264883487064738575747163101685636414364473754
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.195.2166.850.957.0-21.019.713.910.016.68.618.021.655.823.222.112.826.153.143.014.125.043.325.939.937.240.145.142.846.842.339.363.843.536.324.427.328.141.230.126.639.7

us-gaap:ProfitLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.645-19.517161-15.2832-19.054-7.18-7.281-5.501-9.357
Percentage of ProfitLoss-2.0-15.969.9-21.538.047.9-17.2-22.0-22.3-22.5
Percentage of InterestAndDividendIncomeOperating-1.2-15.1116.5-10.921.7-10.1-3.4-3.0-2.2-3.7
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment-107.9-1566.40.0-928.32753.3-1225.30.0-254.7-243.6-455.8

us-gaap:ProfitLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value59107626839-46.31838199.7322013394287373521
Percentage of ProfitLoss72.287.627.096.045.1116.592.258.939.448.564.290.986.277.781.982.186.4
Percentage of InterestAndDividendIncomeOperating44.983.445.148.925.7-24.518.28.23.98.15.516.318.643.419.018.211.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment46.185.10.049.525.9-24.90.08.44.08.20.016.618.943.90.018.311.1

us-gaap:OperatingSegments, nni:CommunicationsSegment


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-10.876-3.45-5.363-5.536-6.582-7.194-4.932-4.81-5.879-7.741-8.082-7.04-5.45-4.602-3.637
Percentage of ProfitLoss-4.7-4.8-6.213.9-15.7-21.7-20.0-11.5-27.1-17.9-16.3-6.2-11.9-10.6-14.8
Percentage of InterestAndDividendIncomeOperating-7.8-2.5-3.5-2.9-3.1-3.0-2.0-1.9-2.3-3.2-3.5-3.5-2.8-2.3-1.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.0-493200.0-240500.00.0-774100.0-808200.0-704000.00.0-460200.0-363700.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value13239.207118.885207.252128.37418-1.1837.5915.64132.3975.7444.954
Percentage of ProfitLoss15.819.24.016.110.3-52.317.338.433.945.6-5.517.611.411.85.213.220.1
Percentage of InterestAndDividendIncomeOperating9.818.26.68.25.811.03.45.33.47.6-0.53.22.56.61.22.92.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment6236.28950.60.03115.32115.51044.00.0363.3504.8941.30.0501.7754.02011.90.0114880.0165133.3

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value11128.981011109.759151716149.98213153.4754.6483.798
Percentage of ProfitLoss14.29.93.914.212.8-26.023.346.568.940.066.523.127.113.37.610.715.4
Percentage of InterestAndDividendIncomeOperating8.89.56.57.37.35.54.66.46.96.65.74.25.97.41.82.42.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment39300.035952.90.029820.621334.63266.20.02893.43091.63350.30.02619.94586.75849.40.03161.93165.0

us-gaap:OperatingSegments, nni:NelnetBank


Profit
Period End2021-06-302021-03-31
Value-0.204-0.968
Percentage of ProfitLoss-0.2-0.8
Percentage of InterestAndDividendIncomeOperating-0.2-0.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank-10.0-70.3

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value-0.854-0.694-3.385-0.3270.1280.767-0.547-0.0770.0590.0560.0490.1990.1040.74-2.385-2.768-4.0862.1060.5850.0690.0280.0680.1680.0220.0540.0410.1570.6930.5130.2710.1240.1360.1520.00.00.0
Percentage of ProfitLoss-1.0-0.6-1.5-0.50.1-1.9-1.3-0.20.20.10.20.50.20.7-5.2-6.4-16.64.40.60.10.10.10.20.00.10.10.20.90.70.40.30.30.40.00.00.0
Percentage of InterestAndDividendIncomeOperating-0.6-0.5-2.4-0.20.10.4-0.3-0.00.00.00.00.10.00.4-1.2-1.4-2.11.10.30.00.00.00.10.00.00.00.10.40.30.20.10.10.10.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value831232347186-40.5324233244121424911348462850988426478348706485747368364143473754
Percentage of ProfitLoss101.0100.6101.5100.599.9101.9101.3100.299.899.999.899.599.8100.7105.2106.4116.6104.499.499.999.999.999.8100.099.999.999.899.199.399.699.799.799.6100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.895.7169.351.256.9-21.420.013.910.016.68.617.921.656.224.523.514.927.252.843.014.025.043.225.939.937.245.042.446.443.324.327.228.030.126.639.7
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax dei:LegalEntity, us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByType

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax

nni:NelnetServicing, nni:DepartmentOfEducation, us-gaap:CustomerConcentrationRisk


Revenue
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-30
Value353436373838
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating26.527.026.024.620.516.2
Percentage of InterestAndDividendIncomeOperating nni:NelnetServicing nni:DepartmentOfEducation us-gaap:CustomerConcentrationRisk0.00.00.00.00.00.0

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

us-gaap:OperatingSegments, nni:CommunicationsServices, nni:CommunicationsSegment


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value19201818171615141311109.1898.1236.7515.719
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.055.750.847.00.042.70.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating13.914.512.59.68.26.96.45.85.34.94.54.54.13.43.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsServices nni:CommunicationsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServices, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7695657459836374607954584860435043
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax216.7272.90.0204.2158.6216.20.0192.40.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating57.473.846.953.039.044.229.931.124.531.621.624.321.329.722.025.622.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServices nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystems, nni:LoanServicingAndSystemsSegment


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value112111113113111112113113113114112112114100555556
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax316.6319.50.0313.5296.9291.30.0293.50.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating83.986.482.181.473.159.653.347.446.245.944.746.950.049.428.428.429.5
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystems nni:LoanServicingAndSystemsSegment0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:MajorCustomers

nni:BusinessRevenue


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.0364.9184.6194.4714.4334.0253.8163.4143.1972.8612.5352.3812.2192.0131.8141.696
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.013.512.411.60.010.40.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.03.53.02.42.11.71.51.41.31.21.11.21.11.00.90.9
Percentage of InterestAndDividendIncomeOperating nni:BusinessRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:CommunicationsRevenueCustomer


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value19201818171615141311109.1898.1236.7515.7195.106
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.055.750.847.00.042.70.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.014.512.59.68.26.96.45.85.34.94.54.54.13.43.02.8
Percentage of InterestAndDividendIncomeOperating nni:CommunicationsRevenueCustomer0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:OtherCustomerRevenue


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.1340.120.170.1510.0730.0480.0520.0640.0620.0610.0580.0610.0590.0580.0850.059
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.30.50.40.00.10.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.00.10.10.10.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating nni:OtherCustomerRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:ResidentialRevenue


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1515141312121111108.8967.7276.7475.8454.683.823.351
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.041.838.035.00.032.10.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.010.99.47.26.15.24.84.44.03.73.43.33.02.42.01.8
Percentage of InterestAndDividendIncomeOperating nni:ResidentialRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ProductOrService

nni:CommunicationRevenueServiceOffering


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value19201818171615141311109.1898.1236.7515.7195.106
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.055.750.847.00.042.70.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.014.512.59.68.26.96.45.85.34.94.54.54.13.43.02.8
Percentage of InterestAndDividendIncomeOperating nni:CommunicationRevenueServiceOffering0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:CommunicationsServices


Revenue
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value19201818171615141311109.1898.1236.7515.719
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.055.750.847.00.042.70.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating13.914.512.59.68.26.96.45.85.34.94.54.54.13.43.0
Percentage of InterestAndDividendIncomeOperating nni:CommunicationsServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:EducationTechnologyAndServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value24321515142011131419101112168.7359.8311015
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax69.992.60.043.639.951.80.033.90.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating18.525.010.911.39.810.65.55.55.77.94.34.85.28.44.45.05.68.2
Percentage of InterestAndDividendIncomeOperating nni:EducationTechnologyAndServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:EducationTechnologyServicesAndPaymentProcessingServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7695657459836374607954584860435043
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax216.7272.90.0204.2158.6216.20.0192.40.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating57.473.846.953.039.044.229.931.124.531.621.624.321.329.722.025.622.5
Percentage of InterestAndDividendIncomeOperating nni:EducationTechnologyServicesAndPaymentProcessingServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:FFELPServicing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.7034.674.744.9124.9175.6145.8356.0896.4246.6957.2837.4229.1477.6913.8493.9793.6364.077
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.313.40.013.513.114.50.015.80.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating3.53.63.43.53.23.02.72.52.62.72.93.14.03.82.02.01.92.2
Percentage of InterestAndDividendIncomeOperating nni:FFELPServicing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:GovernmentServicingGreatLakes


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value43434245454646464547464545300.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax123.9124.10.0124.9120.9120.00.0119.80.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating32.833.530.932.529.824.521.819.318.618.818.319.019.915.20.00.00.00.0
Percentage of InterestAndDividendIncomeOperating nni:GovernmentServicingGreatLakes0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:GovernmentServicingNelnet


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value353434363738393840393938393938383939
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax99.999.90.0100.099.999.90.0100.10.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating26.527.024.826.024.620.418.516.216.415.815.516.217.419.419.519.620.621.2
Percentage of InterestAndDividendIncomeOperating nni:GovernmentServicingNelnet0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:Internet


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value12121111109.8999.2978.4497.5226.4565.3954.6963.9983.2052.5692.202
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.035.231.928.90.025.60.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.09.27.95.95.04.13.83.43.02.72.42.32.01.61.31.2
Percentage of InterestAndDividendIncomeOperating nni:Internet0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:LoanServicingAndSystems


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value112111113113111112113113113114112112114100555556
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax316.6319.50.0313.5296.9291.30.0293.50.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating83.986.482.181.473.159.653.347.446.245.944.746.950.049.428.428.429.5
Percentage of InterestAndDividendIncomeOperating nni:LoanServicingAndSystems0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:LoanServicingAndSystemsRevenue


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value11211111311311111211311311311411211211410055555654
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax316.6319.50.0313.5296.9291.30.0293.50.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating83.986.482.181.473.159.653.347.446.245.944.746.950.049.428.428.429.529.5
Percentage of InterestAndDividendIncomeOperating nni:LoanServicingAndSystemsRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:OtherCommunicationRevenue


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.0380.040.0380.0550.0820.0160.0160.0290.030.020.0170.0210.020.0180.0460.019
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.00.10.10.10.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating nni:OtherCommunicationRevenue0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:OtherServiceOffering


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0.4230.3480.3930.3840.2620.2920.3590.2860.280.2980.2930.2630.2810.2770.10.101-0.1010.145
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.21.00.01.10.70.80.00.70.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.30.30.30.30.20.20.20.10.10.10.10.10.10.10.10.1-0.10.1
Percentage of InterestAndDividendIncomeOperating nni:OtherServiceOffering0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:OutsourcedServicesRevenueAndOther


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7.96211148.8834.7052.0982.0492.2642.1232.2652.262.3712.3821.6791.4381.3512.0070.991
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax22.533.40.024.512.65.40.05.90.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating6.09.010.56.43.11.11.00.90.90.90.91.01.00.80.70.71.00.5
Percentage of InterestAndDividendIncomeOperating nni:OutsourcedServicesRevenueAndOther0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:PaymentProcessing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value253325352131253521282126161916221318
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax70.694.70.097.656.682.00.091.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating18.725.618.725.313.916.812.014.78.611.68.511.27.09.88.311.47.210.3
Percentage of InterestAndDividendIncomeOperating nni:PaymentProcessing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:PrivateEducationAndConsumerLoanServicing


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value128.5487.7597.9288.1968.6098.7629.5618.9859.489.484108.882137.5257.5967.1215.817
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.224.50.021.821.922.20.024.80.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating9.66.65.65.75.44.64.14.03.63.83.84.23.96.53.83.93.73.2
Percentage of InterestAndDividendIncomeOperating nni:PrivateEducationAndConsumerLoanServicing0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:SoftwareServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value7.3748.4549.6041010111010109.7418.4688.2018.6717.5894.6894.434.3264.337
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax20.824.20.028.728.529.20.027.20.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating5.56.56.97.57.06.05.14.44.13.93.43.43.83.72.42.32.22.4
Percentage of InterestAndDividendIncomeOperating nni:SoftwareServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:Telephone


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2.6012.9312.8122.6912.6432.4872.3952.1672.0751.9571.8251.6891.5851.4131.3441.262
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.08.17.57.00.06.40.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.02.11.91.41.21.01.00.90.80.80.80.80.80.70.70.7
Percentage of InterestAndDividendIncomeOperating nni:Telephone0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:Television


Revenue
Period End2020-12-212020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4.1784.4464.2184.2364.1764.0684.053.8983.6993.3853.0832.7832.522.1151.761.623
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.012.211.310.90.010.50.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.03.22.82.22.01.71.61.61.51.41.31.41.31.10.90.9
Percentage of InterestAndDividendIncomeOperating nni:Television0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:TuitionPaymentPlanServices


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value262923222231262524302219202318171821
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax75.084.70.061.961.481.60.066.70.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating19.922.917.016.115.116.712.310.810.012.08.88.28.911.49.39.19.811.9
Percentage of InterestAndDividendIncomeOperating nni:TuitionPaymentPlanServices0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdministrativeService


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.7011.1132.5242.3530.9222.2432.8312.0842.0511.8721.8241.7561.7561.1610.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.03.20.06.52.55.80.05.40.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.50.91.81.70.61.21.30.90.80.70.70.70.80.60.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:AdministrativeService0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:InvestmentAdvice


Revenue
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1.1452.6972.6884.4631.9142.8020.7470.7530.7310.7111.841.1831.3941.5931.0625.8522.294
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax3.27.70.012.35.17.20.02.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.92.11.93.21.31.50.40.30.30.30.70.50.60.80.53.01.2
Percentage of InterestAndDividendIncomeOperating us-gaap:InvestmentAdvice0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets

us-gaap:Assets


Assets
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value230282216722646222222261123280237082393624219247212522025104252092389823964247682532326141271802766928715295893048531045302462995530098306983137127487277702653626303266452660724408252692544625852262362487125893
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidatedEntities

srt:ParentCompany


Assetsus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value3009255727722316
Percentage of Assets13.310.811.09.7
Percentage of Assets13.310.811.09.7
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value148911481225770732679627685595546563877682624
Percentage of Assets6.55.25.43.53.22.92.62.92.52.22.23.72.52.0
Percentage of Assets6.55.25.43.53.22.92.62.92.52.22.23.72.52.0
Percentage of Assets us-gaap:CorporateNonSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302015-12-31
Value-281.008-210.017-197.534-134.183-132.5-131.004-147.884-212.392-190.437-164.453-134.174-337.236-398.297-327.824-411.415-305.454-276.429-267.405-256.687-267.147-218.923
Percentage of Assets-1.2-0.9-0.9-0.6-0.6-0.6-0.6-0.9-0.8-0.7-0.5-1.3-1.6-1.4-1.7-1.2-1.1-1.0-0.9-1.0-0.7
Percentage of Assets-1.2-0.9-0.9-0.6-0.6-0.6-0.6-0.9-0.8-0.7-0.5-1.3-1.6-1.4-1.7-1.2-1.1-1.0-0.9-1.0-0.7
Percentage of Assets us-gaap:IntersegmentElimination100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:Assets us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2078320367207732068621136219052212822520229072347523806239272409222804229102372424433
Percentage of Assets90.391.991.793.193.594.193.394.194.695.094.495.395.695.495.695.896.5
Percentage of Assets90.391.991.793.193.594.193.394.194.695.094.495.395.695.495.695.896.5
Percentage of Assets us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, nni:CommunicationsSegment


Assetsus-gaap:
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value305301301303306302297286271252228214179150
Percentage of Assets1.41.31.31.31.31.31.21.11.11.01.00.90.70.6
Percentage of Assets1.41.31.31.31.31.31.21.11.11.01.00.90.70.6
Percentage of Assets us-gaap:OperatingSegments nni:CommunicationsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value424372436382351302506413336294471243235193250208230
Percentage of Assets1.81.71.91.71.61.32.11.71.41.21.91.00.90.81.00.80.9
Percentage of Assets1.81.71.91.71.61.32.11.71.41.21.91.00.90.81.00.80.9
Percentage of Assets us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2051911902112212232902222672732262762532811229899
Percentage of Assets0.90.90.81.01.01.01.20.91.11.10.91.11.01.20.50.40.4
Percentage of Assets0.90.90.81.01.01.01.20.91.11.10.91.11.01.20.50.40.4
Percentage of Assets us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, nni:NelnetBank


Assetsus-gaap:
Period End2021-06-302021-03-312020-12-31
Value407296216
Percentage of Assets1.81.31.0
Percentage of Assets1.81.31.0
Percentage of Assets us-gaap:OperatingSegments nni:NelnetBank100.0100.0100.0

Liabilities

us-gaap:Liabilities

us-gaap:Liabilities


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value202001941820017198192027020954213172158221893223912290622777229222165321799226382319224013251092568826809277022859329209284412817428372290412979025973263262515924983254182544223232241242433824786252242388224987
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets87.787.688.489.289.690.089.990.290.490.690.890.790.990.691.091.491.691.992.492.893.493.693.894.194.094.194.394.695.094.594.894.895.095.495.695.295.595.695.996.196.096.5

us-gaap:Liabilities us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilitiesus-gaap:
Period End2020-12-312019-12-312018-12-312017-12-31
Value377165463162
Percentage of Liabilities1.90.82.00.7
Percentage of Assets1.70.71.80.7
Percentage of Assets srt:ParentCompany12.56.516.77.0

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:LiabilitiesAndStockholdersEquity


Liabilities
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value230282216722646222222261123280237082393624219247212522025104252092389823964247682532326141271802766928715295893048531045302462995530098306983137127487277702653626303266452660724408252692544625852262362487125893
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LiabilitiesAndStockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Liabilities
Period End2020-12-312019-12-312018-12-312017-12-31
Value3009255727722316
Percentage of LiabilitiesAndStockholdersEquity13.310.811.09.7
Percentage of Assets13.310.811.09.7
Percentage of Assets srt:ParentCompany100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value283327522632239923362320238623502322232523042316227622352149211121152108206119721897187818841835180517811725165715791512144313771319122611651175114411071066
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.312.411.610.810.310.010.19.89.69.49.19.29.09.49.08.58.48.17.67.16.66.36.25.96.05.95.75.45.05.55.25.25.04.64.44.84.54.44.1

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value2632238623042149
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets11.610.19.19.0
Percentage of Assets srt:ParentCompany87.593.383.192.8

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue

us-gaap:CashAndCashEquivalentsAtCarryingValue


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302009-12-312008-12-31
Value212144121966720413316084741218367696625469108696759516311418210013074921076351685066935660429211648283316274338189
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.70.50.40.30.90.60.70.30.30.50.30.30.30.31.00.30.40.30.20.20.20.20.40.60.30.40.20.30.40.20.20.30.20.20.40.20.20.20.40.50.01.10.00.00.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-31
Value69733621
Percentage of CashAndCashEquivalentsAtCarryingValue57.554.630.431.5
Percentage of Assets0.30.30.10.1
Percentage of Assets srt:ParentCompany2.32.91.30.9

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementBasis

us-gaap:FairValueInputsLevel1, us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-31
Value2121441219667204133160847412183676966254691086967595163114182100130749263
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.70.50.40.30.90.60.70.30.30.50.30.30.30.31.00.30.40.30.20.20.20.20.40.60.30.40.20.30.2
Percentage of Assets us-gaap:FairValueInputsLevel1 us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:FairValueByMeasurementBasis

us-gaap:CarryingReportedAmountFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value212144121966720413316084741218367696625469108696759516311418210013074921076366
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.70.50.40.30.90.60.70.30.30.50.30.30.30.31.00.30.40.30.20.20.20.20.40.60.30.40.20.30.40.20.2
Percentage of Assets us-gaap:CarryingReportedAmountFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EstimateOfFairValueFairValueDisclosure


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312012-12-31
Value212144121966720413316084741218367696625469108696759516311418210013074921076366
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.70.50.40.30.90.60.70.30.30.50.30.30.30.31.00.30.40.30.20.20.20.20.40.60.30.40.20.30.40.20.2
Percentage of Assets us-gaap:EstimateOfFairValueFairValueDisclosure0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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
Value1077947958901921110012221138105310511192995964925942108598698911701040
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 Assets4.74.34.24.14.14.75.24.84.44.34.74.03.83.93.94.43.93.84.33.4

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents us-gaap:ConsolidatedEntities

srt:ParentCompany


Cash
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-31
Value1628253653734
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents17.06.84.56.93.23.3
Percentage of Assets0.70.30.20.30.10.1
Percentage of Assets srt:ParentCompany5.43.21.92.80.00.0

Property Plant And Equipment Gross

us-gaap:PropertyPlantAndEquipmentGross

us-gaap:PropertyPlantAndEquipmentGross


Property
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value311283130109102111
Percentage of PropertyPlantAndEquipmentGross100.0100.0100.0100.0100.0100.0
Percentage of Assets1.41.30.40.40.40.4

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType

nni:ComputerEquipmentAndSoftware


Property
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value20717298777279
Percentage of PropertyPlantAndEquipmentGross66.661.075.670.970.771.7
Percentage of Assets0.90.80.30.30.30.3
Percentage of Assets nni:ComputerEquipmentAndSoftware0.00.00.00.00.00.0

us-gaap:Building


Property
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value545211109.7119.144
Percentage of PropertyPlantAndEquipmentGross17.518.58.79.59.58.2
Percentage of Assets0.20.20.00.00.00.0
Percentage of Assets us-gaap:Building0.00.00.00.00.00.0

us-gaap:ConstructionInProgress


Property
Period End2021-06-302020-12-31
Value8.16918
Percentage of PropertyPlantAndEquipmentGross2.66.5
Percentage of Assets0.00.1
Percentage of Assets us-gaap:ConstructionInProgress0.00.0

us-gaap:FurnitureAndFixtures


Property
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value2321129.8439.58310
Percentage of PropertyPlantAndEquipmentGross7.57.79.49.09.39.5
Percentage of Assets0.10.10.00.00.00.0
Percentage of Assets us-gaap:FurnitureAndFixtures0.00.00.00.00.00.0

us-gaap:Land


Property
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value3.6423.6420.70.70.70.7
Percentage of PropertyPlantAndEquipmentGross1.21.30.50.60.70.6
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets us-gaap:Land0.00.00.00.00.00.0

us-gaap:LeaseholdImprovements


Property
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value9.3879.1683.6453.6186.5027.321
Percentage of PropertyPlantAndEquipmentGross3.03.22.83.36.36.6
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets us-gaap:LeaseholdImprovements0.00.00.00.00.00.0

us-gaap:TransportationEquipment


Property
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value4.8574.8573.8777.3983.613.766
Percentage of PropertyPlantAndEquipmentGross1.61.73.06.73.53.4
Percentage of Assets0.00.00.00.00.00.0
Percentage of Assets us-gaap:TransportationEquipment0.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:PropertyPlantAndEquipmentByType, us-gaap:StatementBusinessSegments

nni:Centraloffice, nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value1919181715
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets0.10.10.10.10.1
Percentage of Assets nni:Centraloffice nni:CommunicationsSegment0.00.00.00.00.0

nni:ComputerEquipmentAndSoftware, nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value6.0886.0645.9025.5744.943
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets nni:ComputerEquipmentAndSoftware nni:CommunicationsSegment0.00.00.00.00.0

nni:ComputerEquipmentAndSoftware, nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value188172185177167160161150145137146142124
Percentage of PropertyPlantAndEquipmentGross0.061.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.80.80.80.80.70.70.70.60.60.50.60.60.5
Percentage of Assets nni:ComputerEquipmentAndSoftware nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:Networkplantandfiber, nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value273265258254215
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets1.21.21.11.10.9
Percentage of Assets nni:Networkplantandfiber nni:CommunicationsSegment0.00.00.00.00.0

us-gaap:Building, nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value52523938383738383750494724
Percentage of PropertyPlantAndEquipmentGross0.018.50.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.20.20.20.20.20.20.20.20.20.20.20.20.1
Percentage of Assets us-gaap:Building nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConstructionInProgress, nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value4.1291.621.0880.0546.344
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:ConstructionInProgress nni:CommunicationsSegment0.00.00.00.00.0

us-gaap:ConstructionInProgress, nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value2018302120133.742.7092.5683.5782.0734.7084.127
Percentage of PropertyPlantAndEquipmentGross0.06.50.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.10.10.10.10.10.10.00.00.00.00.00.00.0
Percentage of Assets us-gaap:ConstructionInProgress nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:EquipmentLeasedToOtherParty, nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value3129272721
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets0.10.10.10.10.1
Percentage of Assets us-gaap:EquipmentLeasedToOtherParty nni:CommunicationsSegment0.00.00.00.00.0

us-gaap:FurnitureAndFixtures, nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value22212222212124232322222115
Percentage of PropertyPlantAndEquipmentGross0.07.70.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.10.10.10.1
Percentage of Assets us-gaap:FurnitureAndFixtures nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:Land, nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value3.6423.6421.41.41.41.41.41.41.43.3283.3283.3282.628
Percentage of PropertyPlantAndEquipmentGross0.01.30.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:Land nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:LeaseholdImprovements, nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value9.1679.1689.6219.089.5389.517108.9918.8449.3279.319.2717.759
Percentage of PropertyPlantAndEquipmentGross0.03.20.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:LeaseholdImprovements nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OtherCapitalizedPropertyPlantAndEquipment, nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value3.7613.7373.7333.7023.219
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:OtherCapitalizedPropertyPlantAndEquipment nni:CommunicationsSegment0.00.00.00.00.0

us-gaap:TransportationEquipment, nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value7.1576.8956.6636.6116.58
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets0.00.00.00.00.0
Percentage of Assets us-gaap:TransportationEquipment nni:CommunicationsSegment0.00.00.00.00.0

us-gaap:TransportationEquipment, nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value4.8574.8574.8975.0325.0325.0495.0495.0495.0675.1234.4474.4253.813
Percentage of PropertyPlantAndEquipmentGross0.01.70.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:TransportationEquipment nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:PropertyPlantAndEquipmentGross us-gaap:StatementBusinessSegments

nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value346332322315273
Percentage of PropertyPlantAndEquipmentGross0.00.00.00.00.0
Percentage of Assets1.61.51.41.31.1
Percentage of Assets nni:CommunicationsSegment0.00.00.00.00.0

nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value301283293275264249244230224231237233182
Percentage of PropertyPlantAndEquipmentGross0.0100.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets1.41.31.31.21.11.11.01.00.90.90.90.90.8
Percentage of Assets nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment


Accumulated
Period End2021-06-302020-12-312014-12-312013-12-312012-12-312011-12-31
Value18215984757076
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0
Percentage of Assets0.80.70.30.30.30.3

us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment us-gaap:StatementBusinessSegments

nni:CommunicationsSegment


Accumulated
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value10594847338
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment0.00.00.00.00.0
Percentage of Assets0.50.40.40.30.2
Percentage of Assets nni:CommunicationsSegment0.00.00.00.00.0

nni:NonCommunications


Accumulated
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value171159174162151142147138129123119111105
Percentage of AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment0.0100.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.80.70.80.70.70.60.60.60.50.50.50.40.4
Percentage of Assets nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

Amortization Of Intangible Assets

us-gaap:AmortizationOfIntangibleAssets

us-gaap:AmortizationOfIntangibleAssets


Amortization
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-30
Value8.38.48.08.07.47.48.08.08.38.58.37.97.86.22.32.32.42.43.23.22.72.52.62.42.42.42.12.01.41.00.80.80.85.04.64.74.74.54.0
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Property Plant And Equipment Net

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:PropertyPlantAndEquipmentNet


Property
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value12813012336035035134834233733534433932829924820818114312310796888046485145443533333334313132333434333430
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.51.61.51.51.51.41.41.41.41.41.31.31.00.80.70.50.50.40.30.30.30.20.20.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.1

us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementBusinessSegments

nni:CommunicationsSegment


Property
Period End2020-09-302020-06-302020-03-312019-12-312018-12-31
Value241237238241235
Percentage of PropertyPlantAndEquipmentNet66.968.067.969.368.4
Percentage of Assets1.11.11.01.00.9
Percentage of Assets nni:CommunicationsSegment0.00.00.00.00.0

nni:NonCommunications


Property
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value13012311911211210697919410811812277
Percentage of PropertyPlantAndEquipmentNet100.0100.033.132.032.130.728.527.228.231.634.737.231.1
Percentage of Assets0.60.50.50.50.50.50.40.40.40.40.50.50.3
Percentage of Assets nni:NonCommunications0.00.00.00.00.00.00.00.00.00.00.00.00.0

Goodwill

us-gaap:Goodwill

us-gaap:Goodwill


Goodwill
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value142142142156156156156156156156156153153158138147147147147147147147146126126126126126126117117117117117117117117117117117117117143
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.60.60.70.70.70.70.70.60.60.60.60.60.70.60.60.60.60.50.50.50.50.50.40.40.40.40.40.40.40.40.40.40.40.40.50.50.50.50.40.50.50.0

us-gaap:Goodwill us-gaap:BusinessAcquisition

nni:HigherSchoolPublishingCompany


Goodwillus-gaap:
Period End2020-12-31
Value6.292
Percentage of Goodwill4.4
Percentage of Assets0.0
Percentage of Assets nni:HigherSchoolPublishingCompany0.0

us-gaap:Goodwill us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value767676707070707067
Percentage of Goodwill53.953.953.944.844.844.844.844.848.4
Percentage of Assets0.30.30.30.30.30.30.30.30.3
Percentage of Assets us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment18.120.617.518.420.023.213.914.926.8

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Goodwillus-gaap:
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312018-12-312017-12-31
Value23232323232323238.596
Percentage of Goodwill16.616.616.615.115.115.115.115.16.2
Percentage of Assets0.10.10.10.10.10.10.10.10.0
Percentage of Assets us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment11.512.312.411.210.710.68.110.47.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill


Intangible
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value586675586674818997105114951021073840434547505448513537404242449.0896.1326.9327.7318.5569.39314192328333738
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.40.40.40.50.40.40.40.20.20.20.20.20.20.20.20.20.10.10.10.10.10.10.00.00.00.00.00.00.10.10.10.10.10.20.1

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet

us-gaap:FiniteLivedIntangibleAssetsNet


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312012-09-302012-06-302011-12-31
Value586675586674818997105114951021073840434547505448513537404242446.1329.393141928
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.30.30.30.30.30.40.40.40.50.40.40.40.20.20.20.20.20.20.20.20.20.10.10.10.10.10.10.00.00.10.10.1

us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:ComputerSoftwareIntangibleAsset


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312012-09-302012-06-302011-12-31
Value5.1685.7756.430.6791.1711.6632.1542.6463.1383.9574.9384.6745.0386.294.9586.0427.1278.2119.296101210115.2425.8176.3936.9697.6568.2310.00.00.7041.4082.815
Percentage of FiniteLivedIntangibleAssetsNet8.88.78.61.21.82.22.63.03.23.74.34.94.95.912.914.816.518.119.421.022.421.422.714.815.415.916.417.918.40.00.04.97.49.9
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:ComputerSoftwareIntangibleAsset0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships


Finite
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312012-09-302012-06-302011-12-31
Value53606652586571788591987984872425262728293026272224252728296.1329.393131623
Percentage of FiniteLivedIntangibleAssetsNet91.290.189.288.687.988.088.287.787.486.886.282.782.681.462.961.860.860.059.358.157.155.054.064.964.664.464.266.766.6100.0100.091.186.581.9
Percentage of Assets0.20.30.30.20.30.30.30.30.40.40.40.30.30.40.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.00.00.10.10.1
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TradeNames


Finite
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302013-12-312012-12-312012-09-302012-06-302011-12-31
Value0.8331.6666.0186.9367.2077.4788.3269.17310101112139.0749.2859.4979.7089.919101010105.7585.8886.0196.156.2666.3830.00.00.581.1592.319
Percentage of FiniteLivedIntangibleAssetsNet1.22.210.310.49.79.29.39.49.59.512.212.312.523.622.822.021.420.719.919.121.620.916.315.615.014.414.614.20.00.04.06.18.2
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:OperatingLeaseRightOfUseAsset


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value1832343133
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.1

Equity Securities Fv Ni

us-gaap:EquitySecuritiesFvNi

us-gaap:EquitySecuritiesFvNi


Equity
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value6959423029261217181817
Percentage of EquitySecuritiesFvNi100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.30.30.20.10.10.10.10.10.10.10.1

us-gaap:EquitySecuritiesFvNi us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName, us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

nni:Hudl, us-gaap:MiscellaneousInvestments, us-gaap:VentureCapitalFunds


Equity
Period End2020-12-31
Value128
Percentage of EquitySecuritiesFvNi305.9
Percentage of Assets0.6
Percentage of Assets nni:Hudl us-gaap:MiscellaneousInvestments us-gaap:VentureCapitalFunds0.0

Other Assets

us-gaap:OtherAssets

us-gaap:OtherAssets


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value8089921211311221341211061034541413456131560109.647111175767977163141141128115103979188878990929594101
Percentage of OtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.40.40.40.50.60.50.60.50.40.40.20.20.20.10.20.10.10.20.00.00.00.00.20.20.30.30.50.50.50.50.40.40.40.30.30.40.40.40.40.40.40.4

us-gaap:OtherAssets us-gaap:ConsolidatedEntities

srt:ParentCompany


Other
Period End2020-12-312019-12-312018-12-312017-12-31
Value11510057131
Percentage of OtherAssets125.774.5126.4233.4
Percentage of Assets0.50.40.20.5
Percentage of Assets srt:ParentCompany3.83.92.15.7

Long Term Debt

us-gaap:LongTermDebt

us-gaap:LongTermDebt


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value19381187541932019215197262046620529
Percentage of LongTermDebt100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets84.284.685.386.587.287.986.6

us-gaap:LongTermDebt us-gaap:ConsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary


Long
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-31
Value19166188881935519349198562062520742
Percentage of LongTermDebt98.9100.7100.2100.7100.7100.8101.0
Percentage of Assets83.285.285.587.187.888.687.5
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.00.00.00.00.00.0

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

nni:ClassANotes2020, us-gaap:SeniorNotes


Long
Period End2020-12-312020-09-302020-06-302020-03-31
Value1517122210301030
Percentage of LongTermDebt7.96.45.25.0
Percentage of Assets6.75.54.64.4
Percentage of Assets nni:ClassANotes2020 us-gaap:SeniorNotes0.00.00.00.0

nni:ClassANotes20205, us-gaap:SeniorNotes


Long
Period End2020-12-31
Value295
Percentage of LongTermDebt1.5
Percentage of Assets1.3
Percentage of Assets nni:ClassANotes20205 us-gaap:SeniorNotes0.0

Debt And Capital Lease Obligations

us-gaap:DebtAndCapitalLeaseObligations

us-gaap:DebtAndCapitalLeaseObligations


Debt
Period End2020-12-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value19320205292091021294218352221822251224682122721356222402279023594246682532026399273492817228827280702781528027287372949225589259552485824690251252509822884238362406024434249262360524672
Percentage of DebtAndCapitalLeaseObligations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets85.386.687.487.988.388.188.689.188.889.189.890.090.390.891.591.992.492.492.992.892.993.193.694.093.193.593.793.994.394.393.894.394.694.595.094.995.3

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-5.182-3.089-3.6933.3463.995.124.3824.5154.2924.29810109.8349.473151815199.279.0118.9168.6727.7260.2460.30.2710.230.2680.3860.7550.3280.050.1130.2810.0050.4170.2930.1570.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets-0.0-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Minority
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.3775.1724.1884.07
Percentage of MinorityInterest-10.2118.040.625.7
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.20.20.2

Lessee Operating Lease Liability Payments Due Year Two

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo


Lessee
Period End2020-12-31
Value3857000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearTwo100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Three

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree


Lessee
Period End2020-12-31
Value2938000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearThree100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Four

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFour


Lessee
Period End2020-12-31
Value1562000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFour100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearFive


Lessee
Period End2020-12-31
Value1424000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueYearFive100.0
Percentage of Assets0.0

Lessee Operating Lease Liability Payments Due After Year Five

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive


Lessee
Period End2020-12-31
Value4437000.0
Percentage of LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive100.0
Percentage of Assets0.0

Operating Lease Liability

us-gaap:OperatingLeaseLiability

us-gaap:OperatingLeaseLiability


Operating
Period End2020-12-312019-12-312019-09-302019-06-302019-03-31
Value1833353234
Percentage of OperatingLeaseLiability100.0100.0100.0100.0100.0
Percentage of Assets0.10.10.10.10.1

Lessee Operating Lease Liability Payments Due

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue

us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue


Lessee
Period End2020-12-31
Value20
Percentage of LesseeOperatingLeaseLiabilityPaymentsDue100.0
Percentage of Assets0.1

Lessee Operating Lease Liability Undiscounted Excess Amount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount

us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount


Lessee
Period End2020-12-31
Value2063000.0
Percentage of LesseeOperatingLeaseLiabilityUndiscountedExcessAmount100.0
Percentage of Assets0.0

Stockholders Equity

us-gaap:StockholdersEquity

us-gaap:StockholdersEquity


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value283327522632239923362320238623502322232523042316227622352149211121152108206119721897187818841835180517811725165715791512144313771319122611651175114411071066
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.312.411.610.810.310.010.19.89.69.49.19.29.09.49.08.58.48.17.67.16.66.36.25.96.05.95.75.45.05.55.25.25.04.64.44.84.54.44.1

us-gaap:StockholdersEquity us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value2632238623042149
Percentage of StockholdersEquity100.0100.0100.0100.0
Percentage of Assets11.610.19.19.0
Percentage of Assets srt:ParentCompany87.593.383.192.8

Stockholders Equity Including Portion Attributable To Noncontrolling Interest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value2828274926282402234023252391235423262330231423272286224521652130213021272070198119061886189218351805178117251657158015131443137713191226116511761144110710661011988955906844873839784643
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.312.411.610.810.410.010.19.89.69.49.29.39.19.49.08.68.48.17.67.26.66.46.25.96.05.95.75.45.05.55.25.25.04.64.44.84.54.44.13.94.00.03.50.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Stockholders
Period End2020-12-312019-12-312018-12-312017-12-31
Value2632239123082153
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.2100.099.799.5
Percentage of Assets11.610.19.29.0
Percentage of Assets srt:ParentCompany87.593.583.393.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-312012-12-312011-12-31
Value0.2750.2740.2720.2720.2720.2860.2850.2840.2840.2860.2880.2930.2930.2930.2930.2940.3040.3070.3060.3080.310.3250.3480.3490.3510.356
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB, us-gaap:CommonStock


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312014-12-312013-12-312012-12-312011-12-31
Value0.1110.1120.1120.1120.1120.1130.1130.1130.1130.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.1150.115
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassB us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value109.0226.1024.2843.2330.8592.9722.893.1443.5523.8833.9752.7043.0224.6174.1874.2515.3154.73-0.424-2.2771.4162.2842.8763.2834.8725.1355.0995.5692.6794.8195.7222.5975.052.813-1.933-0.4090.6050.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.40.30.20.20.10.00.10.10.10.20.20.20.10.10.20.20.20.20.2-0.0-0.10.10.10.20.20.30.30.30.40.20.30.40.20.40.2-0.2-0.00.10.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AccumulatedOtherComprehensiveIncome0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdditionalPaidInCapital


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value105.8593.7941.7041.8679.145.7153.6781.670.6360.6224.9082.5860.4480.5210.360.3662.2360.420.2244.6012.9130.01.4410.013171820272424272732525250495474737675101112109103
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.40.20.10.10.10.40.20.20.10.00.00.20.10.00.00.00.00.10.00.00.20.20.00.10.00.71.01.11.31.81.71.72.02.32.84.54.64.64.65.47.57.78.49.011.613.513.916.1
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.20.20.20.20.20.30.00.30.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncontrollingInterest


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-31
Value-5.182-3.089-3.6933.3463.995.124.3824.5154.2924.29810109.8349.473151815199.279.0118.9168.6727.7260.2460.30.2710.230.2680.3860.7550.3280.050.1130.2810.0050.4170.2930.1570.00.00.00.00.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-0.2-0.1-0.10.10.20.20.20.20.20.20.40.40.40.40.70.90.70.90.40.50.50.50.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets-0.0-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Stockholders
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-31
Value281227362621239323312310237723432317232122992307227122312143210621102100205619711894187318811830180117621702163315521482141313471289119211291124109210561017957914882831769773726676540
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.499.699.799.699.699.399.499.599.699.699.399.299.399.499.098.999.098.799.399.599.499.399.499.799.898.998.798.698.397.997.997.897.797.396.995.695.495.395.494.792.592.491.791.188.586.686.284.0
Percentage of Assets12.212.311.610.810.39.910.09.89.69.49.19.29.09.38.98.58.38.07.67.16.66.36.25.96.05.95.75.35.05.45.15.14.94.54.24.64.34.23.93.63.70.03.20.00.00.00.00.0
Percentage of Assets us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Common Stock Value

us-gaap:CommonStockValue us-gaap:ConsolidatedEntities

us-gaap:CommonStockValue

srt:ParentCompany


Common
Period End2020-12-312019-12-312018-12-312017-12-31
Value384000.0398000.0403000.0408000.0
Percentage of CommonStockValue100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.00.00.0

us-gaap:CommonStockValue us-gaap:StatementClassOfStock

us-gaap:CommonClassA


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value275000.0274000.0272000.0272000.0272000.0286000.0285000.0284000.0284000.0286000.0288000.0293000.0293000.0293000.0293000.0294000.0304000.0307000.0306000.0308000.0310000.0310000.0325000.0334000.0337000.0347000.0348000.0348000.0349000.0350000.0349000.0349000.0350000.0350000.0351000.0358000.0358000.0358000.0356000.0360000.0370000.0368000.0
Percentage of CommonStockValue0.00.070.80.00.00.071.60.00.00.071.50.00.00.071.80.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:CommonClassB


Common
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value111000.0112000.0112000.0112000.0112000.0113000.0113000.0113000.0113000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0115000.0
Percentage of CommonStockValue0.00.029.20.00.00.028.40.00.00.028.50.00.00.028.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassB0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Additional Paid In Capital

us-gaap:AdditionalPaidInCapital

us-gaap:AdditionalPaidInCapital


Additional
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value105.8593.7941.7041.8679.145.7153.6781.670.6360.6224.9082.5860.4480.5210.360.3662.2360.420.2244.6012.9130.01.4410.013171820272424272732525250495476
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.10.10.10.10.10.20.20.20.20.20.3

us-gaap:AdditionalPaidInCapital us-gaap:ConsolidatedEntities

srt:ParentCompany


Additional
Period End2020-12-312019-12-312018-12-312017-12-31
Value3.7945.7150.6220.521
Percentage of AdditionalPaidInCapital100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.10.20.00.0

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:RetainedEarningsAccumulatedDeficit


Retained
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-31
Value281227362621239323312310237723432317232122992307227122312143210621102100205619711894187318811830180117621702163315521482141313471289119211291124109210561017957831
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets12.212.311.610.810.39.910.09.89.69.49.19.29.09.38.98.58.38.07.67.16.66.36.25.96.05.95.75.35.05.45.15.14.94.54.24.64.34.23.93.63.2

us-gaap:RetainedEarningsAccumulatedDeficit us-gaap:ConsolidatedEntities

srt:ParentCompany


Retained
Period End2020-12-312019-12-312018-12-312017-12-31
Value2621237722992143
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0
Percentage of Assets11.610.09.18.9
Percentage of Assets srt:ParentCompany87.193.082.992.6

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax


Accumulated
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value109.0226.1024.2843.2330.8592.9722.893.1443.5523.8833.9752.7043.0224.6174.1874.2515.3154.73-0.424-2.2771.4162.2842.8763.2834.8725.1355.0995.5692.6794.8195.7222.5975.052.813-1.933-0.4090.6050.0
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0-0.0-0.00.00.0

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax us-gaap:ConsolidatedEntities

srt:ParentCompany


Accumulated
Period End2020-12-312019-12-312018-12-312017-12-31
Value6.1022.9723.8834.617
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.20.10.10.2

Minority Interest

us-gaap:MinorityInterest

us-gaap:MinorityInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-31
Value-5.182-3.089-3.6933.3463.995.124.3824.5154.2924.29810109.8349.473151815199.279.0118.9168.6727.7260.2460.30.2710.230.2680.3860.7550.3280.050.1130.2810.0050.4170.2930.1570.0
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0
Percentage of Assets-0.0-0.0-0.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterest us-gaap:ConsolidatedEntities

srt:ParentCompany


Minority
Period End2020-12-312019-12-312018-12-312017-12-31
Value0.3775.1724.1884.07
Percentage of MinorityInterest-10.2118.040.625.7
Percentage of Assets0.00.00.00.0
Percentage of Assets srt:ParentCompany0.00.20.20.2

Stock Issued During Period Value New Issues

us-gaap:StockIssuedDuringPeriodValueNewIssues

us-gaap:StockIssuedDuringPeriodValueNewIssues


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1824000.02091000.0473000.0553000.01660000.02941000.0450000.0524000.01384000.02494000.0509000.0580000.01911000.02173000.0260000.0278000.0992000.02090000.0275000.0282000.0954000.02708000.0182000.0268000.0945000.02468000.0213000.0213000.0883000.02246000.0146000.0264000.0695000.01273000.0368000.0271000.0852000.02426000.0266000.0315000.01028000.03089000.0388000.0602000.0702000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:CommonClassA, us-gaap:CommonStock


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-31
Value02000.001000.001000.01000.0001000.0001000.02000.00001000.00
Percentage of StockIssuedDuringPeriodValueNewIssues0.00.10.00.20.00.00.20.00.00.00.00.00.10.10.00.00.00.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:CommonClassA us-gaap:CommonStock0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StockIssuedDuringPeriodValueNewIssues us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Stock
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1824000.02089000.0473000.0553000.01660000.02940000.0449000.0524000.01384000.02493000.0509000.0580000.01910000.02171000.0260000.0278000.0992000.02089000.0275000.0282000.0954000.02707000.0182000.0267000.0945000.02467000.0212000.0213000.0882000.02244000.0146000.0264000.0694000.01272000.0368000.0271000.0851000.02424000.0267000.0314000.01027000.03087000.0388000.0601000.0701000.0
Percentage of StockIssuedDuringPeriodValueNewIssues100.099.9100.0100.0100.0100.099.8100.0100.0100.0100.0100.099.999.9100.0100.0100.0100.0100.0100.0100.0100.0100.099.6100.0100.099.5100.099.999.9100.0100.099.999.9100.0100.099.999.9100.499.799.999.9100.099.899.9
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

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

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2874000.01985000.01831000.01864000.01857000.01738000.01738000.01705000.01590000.01368000.01668000.01934000.01506000.01087000.0980000.01042000.01075000.01096000.0638000.01132000.01133000.01183000.01231000.01246000.01353000.01357000.01303000.01248000.01135000.0875000.0794000.0824000.0808000.0676000.0615000.0584000.0593000.0395000.0294000.0310000.0342000.0355000.0372000.0405000.0366000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital


Adjustments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2874000.01985000.01831000.01864000.01857000.01738000.01738000.01705000.01590000.01368000.01668000.01934000.01506000.01087000.0980000.01042000.01075000.01096000.0638000.01132000.01133000.01183000.01231000.01246000.01353000.01357000.01303000.01248000.01135000.0875000.0794000.0824000.0808000.0676000.0615000.0584000.0593000.0395000.0294000.0310000.0342000.0355000.0372000.0405000.0366000.0
Percentage of AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:AdditionalPaidInCapital0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Minority Interest Decrease From Distributions To Noncontrolling Interest Holders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value6.7270.102150.3310.5340.0550.1253.8650.0910.0220.1740.0950.2380.0190.3710.7590.2050.310.3530.00.1220.0970.356-0.08-0.0440.03.594-0.2751.062-0.287-0.29-0.279-0.7820.0-0.4310.0
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Minority
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-30
Value6.7270.102150.3310.5340.0550.1253.8650.0910.0220.1740.0950.2380.0190.3710.7590.2050.310.3530.00.1220.0970.356-0.08-0.0443.594-0.2751.0620.2870.290.279-0.782
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0-100.0-100.0-100.0100.0
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of Assets us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value138483927838-144.455155160121-139.665771211357-2.827985873668370104841156212994106678818449688438996010098438681179-45.581
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating104.037.728.7199.425.6-76.473.567.349.4-55.730.750.86.028.6-1.449.930.240.235.742.638.054.443.561.035.274.351.156.338.455.8109.930.842.754.124.865.539.965.262.927.761.959.1118.7-28.4

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-711.784468-332.418236611105331337469386204149-1187.9131027476987721051595103489972956952329231447618-1516.385340402-180.513408-134.291-2168.1419241143363093114663522493251
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-532.8362.8-239.4169.1402.755.9156.3141.1190.1154.280.962.1-518.350.4380.1354.7400.3572.0319.6527.3483.1380.0294.8276.9164.518.3242.7326.5-857.0214.3239.9-112.7256.2-85.5-1389.9609.375.3218.5196.7197.6333.6255.21652.8157.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value703-528.147349-534.761-829.491-83.48-403.554-413.678-588.637-387.402-84.564-239.8911213-177.076-932.282-611.36-870.116-1086.742-659.391-1110.236-962.251-846.669-704.223-707.019-272.829-191.608-486.445-742.5161433-385.28-575.356113-458.403332101-986.082-179.622-419.276-458.023-379.429-484.681-669.783-2704.831-164.74
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating526.3-409.1251.7-382.7-546.1-44.1-190.0-173.1-238.5-154.6-33.5-100.0529.4-87.3-474.1-310.5-450.7-591.2-353.9-565.9-516.6-440.9-364.7-373.8-153.5-110.0-263.6-392.0810.1-242.5-342.771.1-287.321.21347.4-650.2-118.1-272.0-291.1-240.7-346.7-485.1-1793.1-102.7

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

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect


Cash
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value130-11.20456-19.774-179.023-122.26384842.372-140.7661963139-16.794-143.08798-3.214-180.823
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating97.5-8.740.9-14.2-117.9-64.639.735.21.0-56.278.113.017.1-8.3-72.850.2-1.7-98.4

Deferred Income Tax Expense Benefit

us-gaap:DeferredIncomeTaxExpenseBenefit

us-gaap:DeferredIncomeTaxExpenseBenefit


Deferred
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2.76815183.78711-26.02.3275.431-12.216-2.807-12.5932.284.41116130.237-13.496-1.7533412-16.0-4.2614-11.022.8950.224-1.732153.1562.497-10.74-7.965164.8745.312-8.658-13.293-7.198.19-7.201-8.8150.18.565-11.521
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Depreciation Depletion And Amortization

us-gaap:DepreciationDepletionAndAmortization

us-gaap:DepreciationDepletionAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value3838494950485048474647474543373332343821313132302930292927212119192063187.452284918
Percentage of DepreciationDepletionAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Accounts Receivable

us-gaap:IncreaseDecreaseInAccountsReceivable

us-gaap:IncreaseDecreaseInAccountsReceivable


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value5.6153.8314.595-3.86710-52.185481.665-10.59916-18.38717-2.223-0.177-14.6110141.972-9.43611-3.501-5.961-15.1493.7474.9255.416-8.5741.189-5.0635.758-6.879-3.065-7.2239.601-7.7614.3982.7860.5614.764.7821.30.198-16.09942
Percentage of IncreaseDecreaseInAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value138483927838-144.455155160121-139.665771211357-2.827985873668370104841156212994106678818449688438996010098438681179-45.581
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating104.037.728.7199.425.6-76.473.567.349.4-55.730.750.86.028.6-1.449.930.240.235.742.638.054.443.561.035.274.351.156.338.455.8109.930.842.754.124.865.539.965.262.927.761.959.1118.7-28.4

Net Income Loss

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLoss


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value831232347186-40.5324233244121424911348462850988426478348706473857473706210168563641436447375485-0.36849
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.895.7169.351.256.9-21.420.013.910.016.68.617.921.656.224.523.514.927.252.843.014.025.043.225.939.937.239.945.042.446.442.039.263.543.336.324.327.228.041.230.126.639.756.4-0.231.9

us-gaap:NetIncomeLoss us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecurities

nni:CommonShareholders


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value821212317085-39.974413224412142481124745284997832547824870647284747369621006756364142
Percentage of NetIncomeLoss98.398.598.698.698.698.698.798.798.798.798.498.798.899.099.099.099.099.099.099.099.098.998.998.998.998.998.999.099.099.199.199.199.199.299.299.299.299.4
Percentage of InterestAndDividendIncomeOperating61.794.3166.950.456.1-21.119.713.79.816.48.417.721.355.624.223.314.726.952.242.513.924.742.725.639.536.839.544.542.046.041.638.962.943.036.024.127.027.8
Percentage of InterestAndDividendIncomeOperating nni:CommonShareholders0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

nni:UnvestedRestrictedStockShareholders


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value1.3881.8323.3341.021.239-0.5580.5590.4340.3270.5340.3370.5730.5751.1370.4750.4530.280.5211.0320.8750.2710.5090.8850.5190.7630.6870.7960.8890.7310.6610.6180.5530.9040.5620.4390.290.3360.279
Percentage of NetIncomeLoss1.71.51.41.41.41.41.31.31.31.31.61.31.21.01.01.01.01.01.01.01.01.11.11.11.11.11.11.01.00.90.90.90.90.80.80.80.80.6
Percentage of InterestAndDividendIncomeOperating1.01.42.40.70.8-0.30.30.20.10.20.10.20.30.60.20.20.10.30.60.40.10.30.50.30.40.40.40.50.40.40.40.30.60.40.30.20.20.2
Percentage of InterestAndDividendIncomeOperating nni:UnvestedRestrictedStockShareholders0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NetIncomeLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-0.791-19.534165-14.95332-19.821-6.633-7.204-5.56-9.413
Percentage of NetIncomeLoss-0.9-15.870.3-20.937.948.9-15.7-21.7-22.6-22.6
Percentage of InterestAndDividendIncomeOperating-0.6-15.1119.0-10.721.6-10.5-3.1-3.0-2.3-3.8
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment-51.9-1567.70.0-908.42742.6-1274.70.0-252.0-246.2-458.5

us-gaap:IntersegmentElimination


Net
Period End2021-03-312020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.7110.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of NetIncomeLoss0.60.0-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating0.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:IntersegmentElimination-326.1-0.0-0.00.0-0.0-0.0-0.00.0-0.0-0.0-0.00.0-0.0-0.0-0.00.0-0.0

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value59107626839-46.31838199.7322013394287373521
Percentage of NetIncomeLoss71.587.126.695.645.2114.391.058.739.548.564.491.386.477.277.977.274.1
Percentage of InterestAndDividendIncomeOperating44.983.445.148.925.7-24.518.28.23.98.15.516.318.643.419.018.211.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment46.185.10.049.525.9-24.90.08.44.08.20.016.618.943.90.018.311.1

us-gaap:OperatingSegments, nni:CommunicationsSegment


Net
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-10.876-3.45-5.363-5.536-6.582-7.194-4.932-4.81-5.879-7.741-8.082-7.04-5.45-4.602-3.637
Percentage of NetIncomeLoss-4.6-4.8-6.213.7-15.5-21.7-20.0-11.6-27.2-18.0-16.3-6.2-11.3-9.9-12.7
Percentage of InterestAndDividendIncomeOperating-7.8-2.5-3.5-2.9-3.1-3.0-2.0-1.9-2.3-3.2-3.5-3.5-2.8-2.3-1.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.0-493200.0-240500.00.0-774100.0-808200.0-704000.00.0-460200.0-363700.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value13239.207118.885207.252128.37418-1.1837.5915.64132.3975.7444.954
Percentage of NetIncomeLoss15.619.03.916.010.3-51.317.138.334.045.6-5.517.711.411.75.012.417.2
Percentage of InterestAndDividendIncomeOperating9.818.26.68.25.811.03.45.33.47.6-0.53.22.56.61.22.92.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment6236.28950.60.03115.32115.51044.00.0363.3504.8941.30.0501.7754.02011.90.0114880.0165133.3

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value11128.981011109.759151716149.98213156.0658.0568.024
Percentage of NetIncomeLoss14.19.93.814.212.8-25.523.046.369.140.066.723.327.213.912.617.427.9
Percentage of InterestAndDividendIncomeOperating8.89.56.57.37.35.54.66.46.96.65.74.25.97.83.14.14.2
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment39300.035952.90.029820.621334.63266.20.02893.43091.63350.30.02619.94586.76163.80.05480.36686.7

us-gaap:OperatingSegments, nni:NelnetBank


Net
Period End2021-06-302021-03-31
Value-0.204-0.968
Percentage of NetIncomeLoss-0.2-0.8
Percentage of InterestAndDividendIncomeOperating-0.2-0.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank-10.0-70.3

Profit Loss

us-gaap:ProfitLoss

us-gaap:ProfitLoss


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-31
Value831222317186-39.76541332441214349113454324479884264883487064738575747163101685636414364473754
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.195.2166.850.957.0-21.019.713.910.016.68.618.021.655.823.222.112.826.153.143.014.125.043.325.939.937.240.145.142.846.842.339.363.843.536.324.427.328.141.230.126.639.7

us-gaap:ProfitLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1.645-19.517161-15.2832-19.054-7.18-7.281-5.501-9.357
Percentage of ProfitLoss-2.0-15.969.9-21.538.047.9-17.2-22.0-22.3-22.5
Percentage of InterestAndDividendIncomeOperating-1.2-15.1116.5-10.921.7-10.1-3.4-3.0-2.2-3.7
Percentage of InterestAndDividendIncomeOperating us-gaap:CorporateNonSegment-107.9-1566.40.0-928.32753.3-1225.30.0-254.7-243.6-455.8

us-gaap:ProfitLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value59107626839-46.31838199.7322013394287373521
Percentage of ProfitLoss72.287.627.096.045.1116.592.258.939.448.564.290.986.277.781.982.186.4
Percentage of InterestAndDividendIncomeOperating44.983.445.148.925.7-24.518.28.23.98.15.516.318.643.419.018.211.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:AssetGenerationAndManagementSegment46.185.10.049.525.9-24.90.08.44.08.20.016.618.943.90.018.311.1

us-gaap:OperatingSegments, nni:CommunicationsSegment


Profit
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-10.876-3.45-5.363-5.536-6.582-7.194-4.932-4.81-5.879-7.741-8.082-7.04-5.45-4.602-3.637
Percentage of ProfitLoss-4.7-4.8-6.213.9-15.7-21.7-20.0-11.5-27.1-17.9-16.3-6.2-11.9-10.6-14.8
Percentage of InterestAndDividendIncomeOperating-7.8-2.5-3.5-2.9-3.1-3.0-2.0-1.9-2.3-3.2-3.5-3.5-2.8-2.3-1.9
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:CommunicationsSegment0.00.00.00.00.00.0-493200.0-240500.00.0-774100.0-808200.0-704000.00.0-460200.0-363700.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value13239.207118.885207.252128.37418-1.1837.5915.64132.3975.7444.954
Percentage of ProfitLoss15.819.24.016.110.3-52.317.338.433.945.6-5.517.611.411.85.213.220.1
Percentage of InterestAndDividendIncomeOperating9.818.26.68.25.811.03.45.33.47.6-0.53.22.56.61.22.92.6
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment6236.28950.60.03115.32115.51044.00.0363.3504.8941.30.0501.7754.02011.90.0114880.0165133.3

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value11128.981011109.759151716149.98213153.4754.6483.798
Percentage of ProfitLoss14.29.93.914.212.8-26.023.346.568.940.066.523.127.113.37.610.715.4
Percentage of InterestAndDividendIncomeOperating8.89.56.57.37.35.54.66.46.96.65.74.25.97.41.82.42.0
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:LoanServicingAndSystemsSegment39300.035952.90.029820.621334.63266.20.02893.43091.63350.30.02619.94586.75849.40.03161.93165.0

us-gaap:OperatingSegments, nni:NelnetBank


Profit
Period End2021-06-302021-03-31
Value-0.204-0.968
Percentage of ProfitLoss-0.2-0.8
Percentage of InterestAndDividendIncomeOperating-0.2-0.7
Percentage of InterestAndDividendIncomeOperating us-gaap:OperatingSegments nni:NelnetBank-10.0-70.3

us-gaap:ProfitLoss us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value-0.854-0.694-3.385-0.3270.1280.767-0.547-0.0770.0590.0560.0490.1990.1040.74-2.385-2.768-4.0862.1060.5850.0690.0280.0680.1680.0220.0540.0410.1570.6930.5130.2710.1240.1360.1520.00.00.0
Percentage of ProfitLoss-1.0-0.6-1.5-0.50.1-1.9-1.3-0.20.20.10.20.50.20.7-5.2-6.4-16.64.40.60.10.10.10.20.00.10.10.20.90.70.40.30.30.40.00.00.0
Percentage of InterestAndDividendIncomeOperating-0.6-0.5-2.4-0.20.10.4-0.3-0.00.00.00.00.10.00.4-1.2-1.4-2.11.10.30.00.00.00.10.00.00.00.10.40.30.20.10.10.10.00.00.0
Percentage of InterestAndDividendIncomeOperating us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:RetainedEarnings


Profit
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-31
Value831232347186-40.5324233244121424911348462850988426478348706485747368364143473754
Percentage of ProfitLoss101.0100.6101.5100.599.9101.9101.3100.299.899.999.899.599.8100.7105.2106.4116.6104.499.499.999.999.999.8100.099.999.999.899.199.399.699.799.799.6100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating62.895.7169.351.256.9-21.420.013.910.016.68.617.921.656.224.523.514.927.252.843.014.025.043.225.939.937.245.042.446.443.324.327.228.030.126.639.7
Percentage of InterestAndDividendIncomeOperating us-gaap:RetainedEarnings0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation

us-gaap:ShareBasedCompensation


Share
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-312014-09-302013-12-312013-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2.9282.052111.9571.7241.8571.8331.811.6621.4761.7582.0461.5741.1611.0461.111.1391.1210.7851.1751.1461.2421.2271.3351.2820.8160.9550.8540.7540.7120.70.4550.4820.5350.5570.5610.6
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-711.784468-332.418236611105331337469386204149-1187.9131027476987721051595103489972956952329231447618-1516.385340402-180.513408-134.291-2168.1419241143363093114663522493251
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating-532.8362.8-239.4169.1402.755.9156.3141.1190.1154.280.962.1-518.350.4380.1354.7400.3572.0319.6527.3483.1380.0294.8276.9164.518.3242.7326.5-857.0214.3239.9-112.7256.2-85.5-1389.9609.375.3218.5196.7197.6333.6255.21652.8157.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value101732332125242318242831362849354426201714154.0053.2371.1478.3724.797125.8763.1465.292.1626.782.7782.5742.9652.0992.3064.3911.4955.2892.9925.2742.826
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities


Net
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value703-528.147349-534.761-829.491-83.48-403.554-413.678-588.637-387.402-84.564-239.8911213-177.076-932.282-611.36-870.116-1086.742-659.391-1110.236-962.251-846.669-704.223-707.019-272.829-191.608-486.445-742.5161433-385.28-575.356113-458.403332101-986.082-179.622-419.276-458.023-379.429-484.681-669.783-2704.831-164.74
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of InterestAndDividendIncomeOperating526.3-409.1251.7-382.7-546.1-44.1-190.0-173.1-238.5-154.6-33.5-100.0529.4-87.3-474.1-310.5-450.7-591.2-353.9-565.9-516.6-440.9-364.7-373.8-153.5-110.0-263.6-392.0810.1-242.5-342.771.1-287.321.21347.4-650.2-118.1-272.0-291.1-240.7-346.7-485.1-1793.1-102.7

Repayments Of Long Term Debt

us-gaap:RepaymentsOfLongTermDebt us-gaap:DebtInstrument, us-gaap:SubsequentEventType

us-gaap:RepaymentsOfLongTermDebt

us-gaap:JuniorSubordinatedDebt, us-gaap:SubsequentEvent


Repayments
Period End2020-11-05
Value20
Percentage of RepaymentsOfLongTermDebt100.0

Payments Of Dividends Common Stock

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value8.4758.4378.4357.6647.7337.9467.9397.1437.1717.232
Percentage of PaymentsOfDividendsCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock

us-gaap:PaymentsForRepurchaseOfCommonStock


Payments
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.3992.0090.2134.618671.2530.1490.2212316280.1924.91115.56545161.3698.9487.6750.399522915437.9392.3764.0338.4350.8690.1214.0262.2856.704210.2060.1991.1166.004200.2250.310.13326
Percentage of PaymentsForRepurchaseOfCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Liabilities

us-gaap:DeferredTaxLiabilities

us-gaap:DeferredTaxLiabilities


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value413558374517160.70910-17.568
Percentage of DeferredTaxLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Net

us-gaap:DeferredTaxAssetsNet

us-gaap:DeferredTaxAssetsNet


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value74563826404952667755
Percentage of DeferredTaxAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Unrecognized Tax Benefits

us-gaap:UnrecognizedTaxBenefits

us-gaap:UnrecognizedTaxBenefits


Unrecognized
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2020232828272119292110
Percentage of UnrecognizedTaxBenefits100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Deferred Tax Assets Valuation Allowance

us-gaap:DeferredTaxAssetsValuationAllowance

us-gaap:DeferredTaxAssetsValuationAllowance


Deferred
Period End2020-12-312019-12-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-31
Value569000.0548000.0527000.0254000.0264000.0222000.0304000.0-239000.0-137000.0-250000.0
Percentage of DeferredTaxAssetsValuationAllowance100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:CapitalInvestedInSubsidiary us-gaap:Ownership, us-gaap:SubsequentEventType

nni:CapitalInvestedInSubsidiary

nni:NelnetBank, us-gaap:SubsequentEvent


Capital
Period End2020-11-02
Value100
Percentage of CapitalInvestedInSubsidiary100.0

nni:ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue

nni:ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue


Contract
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
Value24543426235335241545351715382415
Percentage of ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.6240.8510.8790.8550.9750.9530.8410.736
Percentage of ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue2.51.62.53.34.21.82.43.1

nni:ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:CommunicationsSegment


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1111109.9279.6589.3028.7988.266
Percentage of ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue47.621.030.737.841.417.325.034.3

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1141221511422413
Percentage of ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue46.076.864.557.550.979.370.458.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Contract
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.9430.3650.80.3820.8240.8810.7641.116
Percentage of ContractWithCustomerLiabilityIncreaseDecreaseDeferredRevenue3.80.72.31.53.51.62.24.6

nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet

nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-6.989341.0491.91-16.3651.668-24.088-11.539171766
Percentage of DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet

nni:DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-11.0591.0491.91-16.3653.171.668-24.088-11.539-29.8431717667.0147.173-27.91-4.838336-40.702-28.69131-30.6586.502-3.078-5.648241.57-4.265-5.655-16.648401.0726.657-31.275-21.618-15.1811-13.63120-3.03633-35.39110
Percentage of DerivativeMarketValueAndForeignCurrencyAdjustmentsAndDerivativeSettlementsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:DerivativeMarketValueAndForeignCurrencyGainLoss

nni:DerivativeMarketValueAndForeignCurrencyGainLoss


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-1.615383.44-3.911-20.602-5.63-37.06
Percentage of DerivativeMarketValueAndForeignCurrencyGainLoss100.0100.0100.0100.0100.0100.0100.0

nni:DerivativeMarketValueAndForeignCurrencyGainLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-1.615383.44-3.911-20.602-5.63-37.06
Percentage of DerivativeMarketValueAndForeignCurrencyGainLoss100.0100.0100.0100.0100.0100.0100.0

nni:DerivativeSettlementsExpenseIncome

nni:DerivativeSettlementsExpenseIncome


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-5.374-4.304-3.987-2.3915.8214.2376.17.29812191922216.7662.981-0.573-0.363-1.378-3.657-6.261
Percentage of DerivativeSettlementsExpenseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:DerivativeSettlementsExpenseIncome us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


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
Value-5.374-4.304-3.987-2.3915.8214.2376.17.29812191922226.9263.169-0.382-0.165
Percentage of DerivativeSettlementsExpenseIncome100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.6100.6102.4106.366.745.5

nni:DerivativeSettlementsExpenseIncome us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

nni:FixedRateFloorIncome, nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-5.153-4.285-3.588-1.3082.1257.0641216
Percentage of DerivativeSettlementsExpenseIncome95.999.6150.1-22.550.296.893.887.7

nni:OneMonthToThreeMonthLiborBasisSwap, nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-0.221-0.0191.1977.1292.1120.2340.8072.334
Percentage of DerivativeSettlementsExpenseIncome4.10.4-50.1122.549.83.26.212.3

nni:DerivativeSettlementsExpenseIncome us-gaap:IncomeStatementLocation

nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-5.374-4.304-2.3915.8214.2377.2981219
Percentage of DerivativeSettlementsExpenseIncome100.0100.0100.0100.0100.0100.0100.0100.0

nni:FinancingReceivableInterestIncomePercentage us-gaap:FinancingReceivablePortfolioSegment

nni:FinancingReceivableInterestIncomePercentage

nni:ConsumerPortfolioSegmentConsumerLoansNonNelnetBank


Financing
Period End2021-05-14
Value24.5
Percentage of FinancingReceivableInterestIncomePercentage100.0

nni:GainLossOnInvestmentsAndNotesReceivable

nni:GainLossOnInvestmentsAndNotesReceivable


Gain
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value13-13.849-10.63652-4.0461.9214.121-1.151
Percentage of GainLossOnInvestmentsAndNotesReceivable100.0100.0100.0100.0100.0100.0100.0100.0

nni:GainsOnSaleOfStudentLoansAndDebtRepurchasesNet

nni:GainsOnSaleOfStudentLoansAndDebtRepurchasesNet


Gains
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value15140.0180.01.7120.0
Percentage of GainsOnSaleOfStudentLoansAndDebtRepurchasesNet100.0100.00.0100.00.0100.00.0

nni:GainsOnSaleOfStudentLoansAndDebtRepurchasesNet us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Gains
Period End2021-06-302020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value15140.0180.01.7120.0
Percentage of GainsOnSaleOfStudentLoansAndDebtRepurchasesNet100.0100.00.0100.00.0100.00.0

nni:GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.

nni:GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.


Gains
Period End2020-09-302020-03-312019-12-312019-06-302018-09-302018-06-302018-03-312017-09-302017-06-302017-03-31
Value1418151.7120.00.00.3590.1160.4424.98
Percentage of GainsOnSaleOfStudentLoansAndDebtRepurchasesNet.100.0100.0100.0100.00.00.0100.0100.0100.0100.0

nni:IncreaseDecreaseInOperatingLeaseLiability

nni:IncreaseDecreaseInOperatingLeaseLiability


Increase
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-1247000.0-917000.0-3655000.0-2447000.0-2382000.0-1944000.0-2570000.0-2101000.0-2063000.0
Percentage of IncreaseDecreaseInOperatingLeaseLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:IncreaseDecreaseInOperatingLeaseRightOfUseAsset

nni:IncreaseDecreaseInOperatingLeaseRightOfUseAsset


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-2544000.0-1418000.0-2444000.0-3202000.0-6948000.01000000.0-2264000.0-2222000.0-3211000.0-1096000.0
Percentage of IncreaseDecreaseInOperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:InterestPayableIncreaseDecreaseDueToLikelihoodOfRepayment

nni:InterestPayableIncreaseDecreaseDueToLikelihoodOfRepayment


Interest
Period End2021-03-31
Value-23800000.0
Percentage of InterestPayableIncreaseDecreaseDueToLikelihoodOfRepayment100.0

nni:IntersegmentExpenses us-gaap:ConsolidationItems

nni:IntersegmentExpenses

us-gaap:CorporateNonSegment


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value-19.757-20.713-20.513-20.513-20.476-21.041-19.059-16.917-17.535-17.791
Percentage of IntersegmentExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IntersegmentElimination


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-8.483-8.271-8.645-8.29-8.54-11.065-11.325-11.611-11.598-12.217-12.412-12.29-11.609-10.771-10.835-10.563-9.952-10.323-10.945-11.021
Percentage of IntersegmentExpenses42.939.942.140.441.752.659.468.666.168.70.00.00.00.00.00.00.00.00.00.0

nni:IntersegmentExpenses us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8.5498.4279.3338.8689.055111111111212121110111010
Percentage of IntersegmentExpenses-43.3-40.7-45.5-43.2-44.2-56.6-61.6-69.0-66.5-69.10.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:CommunicationsSegment


Intersegment
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0820.4910.5360.6240.8810.7010.7160.6640.7760.5980.5990.6050.6290.470.496
Percentage of IntersegmentExpenses-0.4-2.4-2.6-3.0-4.6-4.1-4.1-3.70.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value3.523.6643.9273.613.4293.3273.7633.1943.1483.2993.0512.4942.572.5672.6492.2192.136
Percentage of IntersegmentExpenses-17.8-17.7-19.1-17.6-16.7-15.8-19.7-18.9-18.0-18.50.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value16161515151614121313151515138.3757.7748.324
Percentage of IntersegmentExpenses-81.7-81.5-77.1-77.2-78.1-77.2-73.5-76.6-77.6-77.30.00.00.00.00.00.00.0

us-gaap:OperatingSegments, nni:NelnetBank


Intersegment
Period End2021-06-302021-03-31
Value0.0370.003
Percentage of IntersegmentExpenses-0.2-0.0

nni:IntersegmentServicingRevenue us-gaap:ConsolidationItems

nni:IntersegmentServicingRevenue

us-gaap:IntersegmentElimination


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value-8.483-8.271-8.645-8.29-8.54-11.065-11.325-11.611-11.598-12.217-12.412-12.29-11.609-10.771-10.835-10.563-9.952-10.323
Percentage of IntersegmentServicingRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:IntersegmentServicingRevenue us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0030.0030.0030.0030.0030.0110.00.00.00.00.00.00.00.00.00.00.0
Percentage of IntersegmentServicingRevenue-0.0-0.0-0.0-0.0-0.0-0.1-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0-0.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Intersegment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value8.488.2688.6428.2878.53711111111121212111010109.952
Percentage of IntersegmentServicingRevenue-100.0-100.0-100.0-100.0-100.0-99.9-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0-100.0

nni:LoanInterest

nni:LoanInterest


Loan
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value122124132134146181204229238242244232223197195191189181183193184189190187175171182187175156165158158155154150150153156156138137149159155
Percentage of LoanInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:NoncashContributionOfAssetBackedSecuritiesToSubsidiary us-gaap:Ownership, us-gaap:SubsequentEventType

nni:NoncashContributionOfAssetBackedSecuritiesToSubsidiary

nni:NelnetBank, us-gaap:SubsequentEvent


Noncash
Period End2020-11-02
Value44
Percentage of NoncashContributionOfAssetBackedSecuritiesToSubsidiary100.0

nni:NoncashDistributionsToNoncontrollingInterestHolders

nni:NoncashDistributionsToNoncontrollingInterestHolders


Noncash
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value140.2270.00.0330.0633.8050.00.00.0
Percentage of NoncashDistributionsToNoncontrollingInterestHolders100.0100.00.0100.0100.0100.00.00.00.0

nni:NoninterestIncomeExpense

nni:NoninterestIncomeExpense


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value219239225251190219182
Percentage of NoninterestIncomeExpense100.0100.0100.0100.0100.0100.0100.0

nni:NoninterestIncomeExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value19-6.184-2.73756-5.77.2318.624
Percentage of NoninterestIncomeExpense8.8-2.6-1.222.6-3.03.34.7

us-gaap:IntersegmentElimination


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value-8.483-8.271-8.29-8.54-11.065-11.611-11.598
Percentage of NoninterestIncomeExpense-3.9-3.5-3.7-3.4-5.8-5.3-6.4

nni:NoninterestIncomeExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value1037162.642-21.2475.052-19.2
Percentage of NoninterestIncomeExpense4.815.67.51.1-11.12.3-10.5

us-gaap:OperatingSegments, nni:CommunicationsSegment


Noninterest
Period End2020-09-302020-06-302020-03-312019-09-302019-06-30
Value2019181716
Percentage of NoninterestIncomeExpense9.27.79.77.88.8

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value76957459837460
Percentage of NoninterestIncomeExpense34.939.833.023.643.933.933.1

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Noninterest
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-30
Value121120124121126127127
Percentage of NoninterestIncomeExpense55.350.655.248.466.358.070.2

us-gaap:OperatingSegments, nni:NelnetBank


Noninterest
Period End2021-06-302021-03-31
Value0.0040.022
Percentage of NoninterestIncomeExpense0.00.0

nni:OtherIncomeExpenseOther

nni:OtherIncomeExpenseOther


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value22-4.604608.281
Percentage of OtherIncomeExpenseOther100.0100.0100.0100.0

nni:OtherIncomeExpenseOther us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value19-6.184572.083
Percentage of OtherIncomeExpenseOther86.8134.394.925.2

nni:OtherIncomeExpenseOther us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value2.3160.4450.7323.215
Percentage of OtherIncomeExpenseOther10.1-9.71.238.8

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Other
Period End2021-06-302021-03-312020-06-302020-03-31
Value0.7011.1131.9142.63
Percentage of OtherIncomeExpenseOther3.1-24.23.231.8

us-gaap:OperatingSegments, nni:NelnetBank


Other
Period End2021-06-302021-03-31
Value0.0040.022
Percentage of OtherIncomeExpenseOther0.0-0.5

nni:OtherIncomeMiscellaneous

nni:OtherIncomeMiscellaneous


Other
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value3.9284.2234.9563.9673.8213.9122.3115.4584.2393.3995.319.1932.5363.386.8755.572.7982.637
Percentage of OtherIncomeMiscellaneous100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:PaymentForContingentConsideration us-gaap:CounterpartyName, us-gaap:Range, us-gaap:StatementScenario

nni:PaymentForContingentConsideration

nni:SDCALLOHoldingsLLC, srt:Maximum, srt:ScenarioForecast


Payment
Period End2020-12-31
Value35
Percentage of PaymentForContingentConsideration100.0

nni:SDCALLOHoldingsLLC, srt:Minimum, srt:ScenarioForecast


Payment
Period End2020-12-31
Value25
Percentage of PaymentForContingentConsideration71.4

nni:PaymentsToAcquireEquitySecuritiesFvNi

nni:PaymentsToAcquireEquitySecuritiesFvNi


Payments
Period End2021-03-31
Value13
Percentage of PaymentsToAcquireEquitySecuritiesFvNi100.0

nni:PercentOfIncomeBeforeTaxesAllocatedToIncomeTaxes us-gaap:ConsolidationItems

nni:PercentOfIncomeBeforeTaxesAllocatedToIncomeTaxes

us-gaap:OperatingSegments


Percent
Period End2021-06-30
Value24.0
Percentage of PercentOfIncomeBeforeTaxesAllocatedToIncomeTaxes100.0

nni:ProceedsFromInvestmentsAndNotesReceivables

nni:ProceedsFromInvestmentsAndNotesReceivables


Proceeds
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
Value4.4831.7583.6353.1351530231.7191.5785.3696.3749.7185.3711.7222.8471.605
Percentage of ProceedsFromInvestmentsAndNotesReceivables100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:ProceedsFromPaymentsToClearinghouse

nni:ProceedsFromPaymentsToClearinghouse


Proceeds
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value0.359384.048-4.067-20.38617-63.255-13.9746.157-22.42862
Percentage of ProceedsFromPaymentsToClearinghouse100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpense

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpense


Provision
Period End2021-03-312020-03-31
Value-2.43634
Percentage of ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpense100.0100.0

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpense us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Provision
Period End2021-03-312020-03-31
Value-2.43626
Percentage of ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpense100.077.2

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpenseNet

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpenseNet


Provision
Period End2021-06-302020-06-30
Value0.50.332
Percentage of ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpenseNet100.0100.0

nni:ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpenseNet us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Provision
Period End2021-06-302020-06-30
Value0.50.332
Percentage of ProvisionNegativeProvisionForBeneficialInterestsAndImpairmentExpenseNet100.0100.0

nni:PurchaseSaleofFinancingReceivables

nni:PurchaseSaleofFinancingReceivables


Purchase
Period End2021-06-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-31
Value-9.9090.0-13.5-12.50.01.50.00.00.00.01.00.350.050.00.00.190.030.10.16-0.34-0.030.00.23-1.3-0.07-0.15-0.1
Percentage of PurchaseSaleofFinancingReceivables100.00.0100.0100.00.0100.00.00.00.00.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0

nni:PurchaseSaleofFinancingReceivables us-gaap:FinancingReceivablePortfolioSegment

nni:ConsumerPortfolioSegmentConsumerLoansNonNelnetBank


Purchase
Period End2021-06-30
Value-9.909
Percentage of PurchaseSaleofFinancingReceivables100.0

nni:ConsumerPortfolioSegmentPrivateEducationLoans


Purchase
Period End2021-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.0010.00.00.00.00.00.00.00.00.00.00.050.150.190.03
Percentage of PurchaseSaleofFinancingReceivables0.0-0.00.00.00.00.00.00.00.00.00.00.00.0100.0100.0

nni:ConsumerPortfolioSegmentPrivateEducationLoansNonNelnetBank


Purchase
Period End2021-06-30
Value0.001
Percentage of PurchaseSaleofFinancingReceivables-0.0

nni:SecuritizationInterestPercent

nni:SecuritizationInterestPercent


Securitization
Period End2020-07-29
Value25.4
Percentage of SecuritizationInterestPercent100.0

nni:StudentLoanDiscountAccretion

nni:StudentLoanDiscountAccretion


Student
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value-7388000.0-7218000.0-7471000.0-8618000.0-9754000.0-9442000.0-8270000.0-8748000.0-9113000.0-9693000.0-9485000.0-9516000.0-10108000.0-11691000.0-11992000.0-9886000.0-10920000.0-12014000.0-10178000.0-8915000.0-10607000.0-10917000.0-11082000.0-11178000.0-10760000.0-10746000.0-11086000.0-11306000.0-11064000.0-10023000.0-9925000.0-8564000.0-8694000.0-9075000.0-12687000.0-8836000.0-12306000.0-10551000.0
Percentage of StudentLoanDiscountAccretion100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AssetImpairmentCharges

us-gaap:AssetImpairmentCharges


Asset
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-312017-09-302012-12-312012-09-302012-06-302012-03-31
Value-9.6960.00.332340.00.00.00.07.8143.93.6260.0-2.7670.00.00.0
Percentage of AssetImpairmentCharges100.00.0100.0100.00.00.00.00.0100.0100.0100.00.0100.00.00.00.0

us-gaap:AssetImpairmentCharges us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Asset
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value0.00.00.3327.7830.00.0
Percentage of AssetImpairmentCharges-0.00.0100.022.80.00.0

us-gaap:AssetImpairmentCharges us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Asset
Period End2020-12-312020-09-302020-06-302020-03-312019-06-302019-03-31
Value-9.6960.00.0260.00.0
Percentage of AssetImpairmentCharges100.00.00.077.20.00.0

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual dei:LegalEntity, us-gaap:MajorCustomers, us-gaap:ConcentrationRiskByType

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

nni:GreatLakesEducationalLoanServices, nni:DepartmentOfEducation, us-gaap:CustomerConcentrationRisk


Business
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-30
Value4343424545464646
Percentage of BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset

us-gaap:ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset


Consideration
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0140.038310.07.9210.00.00.0
Percentage of ConsiderationReceivedForBeneficialInterestObtainedForTransferringFinancialAsset0.0100.00.0100.0100.00.0100.00.00.00.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized

us-gaap:ContractWithCustomerLiabilityRevenueRecognized


Contract
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
Value32343934323236-197.0452732-26.802-163.7982223-24.878
Percentage of ContractWithCustomerLiabilityRevenueRecognized100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityRevenueRecognized us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Contract
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.80.8430.8431.0610.850.7820.786
Percentage of ContractWithCustomerLiabilityRevenueRecognized2.52.52.23.12.62.42.2

us-gaap:ContractWithCustomerLiabilityRevenueRecognized us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:CommunicationsSegment


Contract
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value11109.7459.659.1588.4748.061
Percentage of ContractWithCustomerLiabilityRevenueRecognized34.430.325.028.327.826.122.1

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Contract
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value19222722212126
Percentage of ContractWithCustomerLiabilityRevenueRecognized60.264.770.565.266.267.271.3

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Contract
Period End2020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.970.880.8991.1591.1491.3961.582
Percentage of ContractWithCustomerLiabilityRevenueRecognized3.02.62.33.43.54.34.3

us-gaap:DeconsolidationGainOrLossAmount

us-gaap:DeconsolidationGainOrLossAmount


Deconsolidation
Period End2020-12-31
Value258
Percentage of DeconsolidationGainOrLossAmount100.0

us-gaap:DeconsolidationGainOrLossAmount us-gaap:DisposalGroupClassification, us-gaap:IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperations

us-gaap:DisposalGroupDisposedOfByMeansOtherThanSaleNotDiscontinuedOperations, nni:ALLO


Deconsolidation
Period End2020-12-22
Value258
Percentage of DeconsolidationGainOrLossAmount0.0

us-gaap:Depreciation

us-gaap:Depreciation


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-31
Value12112322222020191615151513129.67.76.76.26.05.85.45.14.64.64.13.3
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization

us-gaap:DepreciationAndAmortization


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value202031302927282724242322211811109.0388.5989.1168.9948.1837.647.2036.9776.5015.6625.6445.4935.2144.783-5.2744.344.324.377-8.8618.4028.2268.136-8.2827.9176.7696.7768.9089.0259.728
Percentage of DepreciationAndAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DepreciationAndAmortization us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value9.3058.929.2326.8397.0655.9075.9955.2124.6234.469
Percentage of DepreciationAndAmortization46.044.229.422.624.021.420.918.818.918.5

us-gaap:DepreciationAndAmortization us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, nni:CommunicationsSegment


Depreciation
Period End2020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value1011101011107.7377.3626.7926.1675.4974.9213.9553.1452.6
Percentage of DepreciationAndAmortization32.236.836.838.038.939.431.630.428.426.825.626.733.431.328.8

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value2.9563.0712.3442.3662.3622.3872.9882.9973.3243.513.4223.4353.2863.3412.3712.3162.346
Percentage of DepreciationAndAmortization14.615.27.57.88.08.610.410.813.614.514.314.915.318.120.023.026.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Depreciation
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value7.9748.1929.6699.9519.1428.8488.5198.5658.7998.8718.8378.9578.2126.0691.220.5490.546
Percentage of DepreciationAndAmortization39.440.630.832.831.132.029.730.935.936.636.939.038.232.910.35.56.0

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:DerivativeInstrumentRisk, us-gaap:IncomeStatementLocation

us-gaap:DerivativeGainLossOnDerivativeNet

nni:FixedRateFloorIncome, nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-0.509363.601-1.039-22.16-12.094-36.851-26.712
Percentage of DerivativeGainLossOnDerivativeNet100.0100.0100.0100.0100.0100.0100.0100.0

nni:OneMonthToThreeMonthLiborBasisSwap, nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-1.1062.799-0.161-2.8721.5586.6360.004-2.212
Percentage of DerivativeGainLossOnDerivativeNet217.37.8-4.5276.4-7.0-54.9-0.08.3

us-gaap:DerivativeGainLossOnDerivativeNet us-gaap:IncomeStatementLocation

nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Derivative
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-1.615383.44-3.911-20.602-5.63-37.06-30.574
Percentage of DerivativeGainLossOnDerivativeNet317.3107.895.5376.493.046.6100.6114.5

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet

us-gaap:DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet


Derivative
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-06-302013-03-31
Value-1.61538-7.0723.441-3.911-20.602-2.93-5.63-37.061-30.574-48.895-5.226-4.898603.99821-0.2871.2386147-44.975-3.67428-23.72226-46.072-19.879-8.381-2.999-0.03914-34.844
Percentage of DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash

us-gaap:DividendsCommonStockCash


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value8.4758.4378.4357.6647.7337.9467.9397.1427.1727.2327.36.5256.5086.5066.5285.7665.9075.8965.8955.1015.0995.0935.3664.4864.5594.6144.6284.634.6434.6414.6374.6374.6494.646524.7374.737-4.712-4.713-4.8114.852-3.387-23.695-3.4353.507
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash us-gaap:StatementEquityComponents

us-gaap:RetainedEarnings


Dividends
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value8.4758.4378.4357.6647.7337.9467.9397.1427.1727.2327.36.5256.5086.5066.5285.7665.9075.8965.8955.1015.0995.0935.3664.4864.5594.6144.6284.634.6434.6414.6374.6374.6494.646524.7374.737-4.712-4.713-4.8114.852-3.387-23.695-3.4353.507
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents


Effect
Period End2021-06-302021-03-31
Value-31000.0-77000.0
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0

us-gaap:EquitySecuritiesFvNiRealizedGain us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

us-gaap:EquitySecuritiesFvNiRealizedGain

us-gaap:MiscellaneousInvestments, nni:PreferredPartnershipInterest


Equity
Period End2021-06-30
Value2.0
Percentage of EquitySecuritiesFvNiRealizedGain100.0

us-gaap:MiscellaneousInvestments, srt:PartnershipInterest


Equity
Period End2021-06-30
Value1.1
Percentage of EquitySecuritiesFvNiRealizedGain55.0

us-gaap:EquitySecuritiesFvNiRealizedLoss us-gaap:InvestmentSecondaryCategorization, us-gaap:InvestmentType

us-gaap:EquitySecuritiesFvNiRealizedLoss

us-gaap:MiscellaneousInvestments, nni:PreferredPartnershipInterest


Equity
Period End2021-03-31
Value2.3
Percentage of EquitySecuritiesFvNiRealizedLoss100.0

us-gaap:MiscellaneousInvestments, srt:PartnershipInterest


Equity
Period End2021-06-302021-03-31
Value-1.122
Percentage of EquitySecuritiesFvNiRealizedLoss0.0965.2

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-06-30
Value0.5250.82.12.96.14.70.0
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease100.0100.0100.0100.0100.0100.00.0

us-gaap:FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease us-gaap:FinancingReceivablePortfolioSegment

nni:ConsumerPortfolioSegmentFederallyInsured


Financing
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-06-30
Value0.82.12.96.14.70.0
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease100.0100.0100.0100.0100.00.0

nni:ConsumerPortfolioSegmentFederallyInsuredNonNelnetBank


Financing
Period End2021-06-302020-06-30
Value0.5256.1
Percentage of FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-03-312014-09-302014-06-302014-03-312013-09-302013-06-30
Value374000.0448000.0406000.0514000.0404000.0439000.0427000.0424000.0431000.0254000.0163000.0150000.0183000.0170000.0165000.0161000.0245000.0197000.0254000.0279000.0339000.0371000.0363000.0442000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesRecovery us-gaap:FinancingReceivablePortfolioSegment

nni:ConsumerPortfolioSegmentConsumerLoans


Financing
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value246000.0283000.0381000.0221000.0247000.0276000.0240000.0273000.023000.09000.026000.01000.05000.00000
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery54.969.774.154.756.364.656.663.39.15.517.30.52.90.00.00.00.0

nni:ConsumerPortfolioSegmentConsumerLoansNonNelnetBank


Financing
Period End2021-06-302020-06-30
Value235000.0221000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery62.854.7

nni:ConsumerPortfolioSegmentPrivateEducationLoans


Financing
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value202000.0123000.0133000.0183000.0192000.0151000.0184000.0158000.0231000.0154000.0124000.0182000.0165000.0165000.0161000.0245000.0197000.0185000.0243000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery45.130.325.945.343.735.443.436.790.994.582.799.597.1100.0100.0100.0100.00.00.0

nni:ConsumerPortfolioSegmentPrivateEducationLoansNonNelnetBank


Financing
Period End2021-06-302020-06-30
Value139000.0183000.0
Percentage of FinancingReceivableAllowanceForCreditLossesRecovery37.245.3

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value3.0392.5042.5915.2158.926118.436.5987.1185.8644.9924.1485.2624.4663.3393.9553.1132.6633.3233.5163.7313.453.443.1743.7053.825-30.5244.1444.7364.0524.5294.0483.9326.7625.4276.5076.5276.2644.55.1535.811
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableAllowanceForCreditLossesWriteOffs us-gaap:FinancingReceivablePortfolioSegment

nni:ConsumerPortfolioSegmentConsumerLoans


Financing
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1.952.2222.7232.824.355.0812.7592.6522.0061.681.4031.3780.5950.1620.0330.00.0
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs77.985.852.231.636.360.341.837.334.233.733.826.213.34.90.80.00.0

nni:ConsumerPortfolioSegmentConsumerLoansNonNelnetBank


Financing
Period End2021-06-302020-06-30
Value1.4642.82
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs48.231.6

nni:ConsumerPortfolioSegmentFederallyInsured


Financing
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.0610.072.4876.086.3182.9133.383.8783.3762.7432.213.1113.3322.6923.4642.8252.5812.833.196
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs2.42.747.768.152.734.651.254.557.654.953.359.174.680.687.690.796.985.290.9

nni:ConsumerPortfolioSegmentFederallyInsuredNonNelnetBank


Financing
Period End2021-06-302020-06-30
Value1.1726.08
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs38.668.1

nni:ConsumerPortfolioSegmentPrivateEducationLoans


Financing
Period End2021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value0.4930.2990.0050.0261.330.4360.4590.5880.4820.5690.5350.7730.5390.4520.4910.2880.0820.4930.32
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs19.711.50.10.311.15.27.08.38.211.412.914.712.113.512.49.33.114.89.1

nni:ConsumerPortfolioSegmentPrivateEducationLoansNonNelnetBank


Financing
Period End2021-06-302020-06-30
Value0.4030.026
Percentage of FinancingReceivableAllowanceForCreditLossesWriteOffs13.30.3

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate


Financing
Period End2020-09-302020-06-30
Value2.96.1
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationAllowanceForCreditLossAtAcquisitionDate100.0100.0

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue

us-gaap:FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue


Financing
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-31
Value3454113137292291
Percentage of FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue100.0100.0100.0100.0100.0100.0

us-gaap:FinancingReceivableSignificantSales us-gaap:FinancingReceivablePortfolioSegment

us-gaap:FinancingReceivableSignificantSales

nni:ConsumerPortfolioSegmentConsumerLoansNonNelnetBank


Financing
Period End2021-05-14
Value77
Percentage of FinancingReceivableSignificantSales100.0

us-gaap:FinancingReceivableTransferToHeldForSaleAllowanceForCreditLossExpenseReversal

us-gaap:FinancingReceivableTransferToHeldForSaleAllowanceForCreditLossExpenseReversal


Financing
Period End2020-09-302020-06-302019-09-302019-06-30
Value150.00.01.5
Percentage of FinancingReceivableTransferToHeldForSaleAllowanceForCreditLossExpenseReversal100.00.00.0100.0

us-gaap:FinancingReceivableTransferToHeldForSaleAllowanceForCreditLossExpenseReversal us-gaap:FinancingReceivablePortfolioSegment

nni:ConsumerPortfolioSegmentConsumerLoans


Financing
Period End2020-09-302020-06-302019-09-302019-06-30
Value150.00.01.5
Percentage of FinancingReceivableTransferToHeldForSaleAllowanceForCreditLossExpenseReversal100.00.00.0100.0

us-gaap:GainLossOnDerivativeInstrumentsNetPretax us-gaap:IncomeStatementLocation

us-gaap:GainLossOnDerivativeInstrumentsNetPretax

nni:DerivativeMarketValueAdjustmentsAndDerivativeSettlementsNet


Gain
Period End2021-06-302021-03-312020-09-302020-06-302020-03-312019-09-302019-06-302019-03-31
Value-6.989341.0491.91-16.3651.668-24.088-11.539
Percentage of GainLossOnDerivativeInstrumentsNetPretax100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GainLossOnSaleOfNotesReceivable us-gaap:FinancingReceivablePortfolioSegment

us-gaap:GainLossOnSaleOfNotesReceivable

nni:ConsumerPortfolioSegmentConsumerLoans


Gain
Period End2020-07-292020-01-30
Value1418
Percentage of GainLossOnSaleOfNotesReceivable100.0100.0

nni:ConsumerPortfolioSegmentConsumerLoansNonNelnetBank


Gain
Period End2021-05-14
Value15
Percentage of GainLossOnSaleOfNotesReceivable0.0

us-gaap:GainLossOnSaleOfNotesReceivable us-gaap:StatementScenario, us-gaap:FinancingReceivablePortfolioSegment, us-gaap:SubsequentEventType

srt:ScenarioForecast, nni:ConsumerPortfolioSegmentConsumerLoans, us-gaap:SubsequentEvent


Gain
Period End2020-09-30
Value14
Percentage of GainLossOnSaleOfNotesReceivable0.0

us-gaap:GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome us-gaap:Ownership, us-gaap:StatementScenario

us-gaap:GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome

nni:ALLO, srt:ScenarioForecast


Gain
Period End2020-12-31
Value230
Percentage of GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome100.0

us-gaap:GainLossOnSalesOfLoansNet

us-gaap:GainLossOnSalesOfLoansNet


Gain
Period End2021-06-302020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value150.0140.018150.01.7120.00.00.00.0
Percentage of GainLossOnSalesOfLoansNet100.00.0100.00.0100.0100.00.0100.00.00.00.00.0

us-gaap:ImpairmentOfInvestments us-gaap:InvestmentType

us-gaap:ImpairmentOfInvestments

us-gaap:ConsumerLoan


Impairment
Period End2021-03-312020-03-31
Value2.426
Percentage of ImpairmentOfInvestments100.0100.0

us-gaap:IncomeLossFromEquityMethodInvestments us-gaap:InvestmentType

us-gaap:IncomeLossFromEquityMethodInvestments

nni:SolarInvestment


Income
Period End2021-06-302021-03-312020-09-302020-06-302020-03-31
Value-2300000.01700000.0-11800000.02000000.02800000.0
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet

us-gaap:IncreaseDecreaseInAccruedInterestReceivableNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value400.11433-96.0849033-3.278128.24536543310159331.1022.981.499.461.664-4.1370.4523.384-0.308-3.0413.784-0.902-7.8712-8.881-4.1736.812-8.639-2.34139-18.277-10.245-12.023-22.67-22.22125-9.668-99.931156
Percentage of IncreaseDecreaseInAccruedInterestReceivableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInDeposits

us-gaap:IncreaseDecreaseInDeposits


Increase
Period End2021-06-302021-03-31
Value9157
Percentage of IncreaseDecreaseInDeposits100.0100.0

us-gaap:IncreaseDecreaseInInterestPayableNet

us-gaap:IncreaseDecreaseInInterestPayableNet


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-0.605-23.174-0.911-3.148-11.114-3.411-5.06-4.126-5.6870.4791.021-2.5688.9744.2132.2150.760.6370.752.8372.9140.9767.443-0.1252.6761.1951.3710.6950.8820.8190.6130.119-0.542-1.1011.091-1.866-1.551-1.094-0.3532.669-1.1471.506-3.566-0.574-2.635
Percentage of IncreaseDecreaseInInterestPayableNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingAssets

us-gaap:IncreaseDecreaseInOtherOperatingAssets


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-27.094-5.147-39.6913.5018.371-31.363-10.91120-30.78132534.994-4.834-49.41533-0.9422.449-0.2941.062-1.438-0.3432.9221.473-3.8152.572-0.6050.351-1.34-0.08-1.3032.3383.011-0.273-0.2930.008-0.066-1.124-1.14-0.356-4.3234.274-1.016-10.4333.941
Percentage of IncreaseDecreaseInOtherOperatingAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities

us-gaap:IncreaseDecreaseInOtherOperatingLiabilities


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value-3.288-10.3753.1745915-42.047-15.601601.072-5.741-5.34739-10.367-36.205-22.88928-14.8456.954-9.17821-12.5572.551-26.71422-20.9416-18.08814-16.505-0.1854.1849.045-22.061131.40819-19.2614-9.622131.347-11.6377.3387.437
Percentage of IncreaseDecreaseInOtherOperatingLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPayablesToCustomers

us-gaap:IncreaseDecreaseInPayablesToCustomers


Increase
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value72-70.849151748-217.8511283062-153.207573326-58.60681-31.60143-26.003
Percentage of IncreaseDecreaseInPayablesToCustomers100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating

us-gaap:InterestAndDividendIncomeOperating


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value133129138139151189212238246250252239229202196196193183186196186192193189177174184189176158167160159157155151152154157157139138150160156
Percentage of InterestAndDividendIncomeOperating100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestAndDividendIncomeOperating us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value1.5241.2461.3781.6461.1961.5552.0622.8592.2582.053
Percentage of InterestAndDividendIncomeOperating1.11.01.01.20.80.81.01.20.90.8

us-gaap:IntersegmentElimination


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-0.187-0.218-0.252-0.261-0.368-0.598-0.801-1.171-0.974-0.851-0.569-4.846-4.425-3.15-2.702-2.139-1.776-1.359-2.52-0.93
Percentage of InterestAndDividendIncomeOperating-0.1-0.2-0.2-0.2-0.2-0.3-0.4-0.5-0.4-0.3-0.2-2.0-1.9-1.6-1.4-1.1-0.9-0.7-1.4-0.5

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value129126137137150185208233243246248236226200195194191
Percentage of InterestAndDividendIncomeOperating97.397.998.798.799.198.398.297.698.698.598.698.498.898.899.599.099.1

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.210.2630.2590.3670.421.9912.0693.4991.6592.0171.5261.5130.7480.6650.0070.0050.003
Percentage of InterestAndDividendIncomeOperating0.20.20.20.30.31.11.01.50.70.80.60.60.30.30.00.00.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.030.0340.0330.0340.0520.3170.4520.5320.550.4970.420.3810.2930.2570.1520.1470.12
Percentage of InterestAndDividendIncomeOperating0.00.00.00.00.00.20.20.20.20.20.20.20.10.10.10.10.1

us-gaap:OperatingSegments, nni:NelnetBank


Interest
Period End2021-06-302021-03-31
Value2.0411.376
Percentage of InterestAndDividendIncomeOperating1.51.1

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value83118968763-21.22651565051644954636969777575939099109108102100108115106961059996938780777886918382908691
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestIncomeExpenseAfterProvisionForLoanLoss us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-31
Value0.4310.4221.5730.7580.1180.1482.2710.749-1.614-1.761
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss0.50.41.60.90.2-0.74.41.3-3.2-3.4

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

us-gaap:OperatingSegments, nni:AssetGenerationAndManagementSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value80116948663-23.6224651505161485362686775
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss97.398.898.198.799.1111.390.891.698.998.696.198.898.498.198.597.196.7

us-gaap:OperatingSegments, nni:EducationTechnologyServicesAndPaymentProcessingServicesSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.210.2630.2590.3510.3991.9742.0553.4871.6482.0091.521.510.7480.6650.0070.0050.003
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss0.30.20.30.40.6-9.34.06.23.23.92.43.11.41.10.00.00.0

us-gaap:OperatingSegments, nni:LoanServicingAndSystemsSegment


Interest
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0.0070.0110.0090.010.0240.2730.4070.4810.5310.4970.420.3810.2930.2570.1490.1470.12
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss0.00.00.00.00.0-1.30.80.91.01.00.70.80.50.40.20.20.2

us-gaap:OperatingSegments, nni:NelnetBank


Interest
Period End2021-06-302021-03-31
Value1.580.76
Percentage of InterestIncomeExpenseAfterProvisionForLoanLoss1.90.6

us-gaap:InterestPaid

us-gaap:InterestPaid


Interest
Period End2020-09-302020-06-302020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value498312516317817616516514511410310395888177766662575553545848484248514855585961525247535368
Percentage of InterestPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest

us-gaap:InvestmentIncomeInterest


Investment
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value114.9866.1645.2385.7437.3987.729.8828.5668.2538.0197.6285.8185.1341.365.1293.5892.6172.7922.462.1852.0292.3031.4561.8872.2051.771.5621.4821.9792.0061.5621.4831.6171.3261.141.0551.0950.9140.6720.8560.7261.7821.1691.304
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense

us-gaap:LaborAndRelatedExpense


Labor
Period End2021-06-302021-03-312020-12-312020-09-302020-06-302020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value1181151361261191191241161111111141141119681747471686360636463586160615352-52.12484747-48.633464849-47.026444243434140
Percentage of LaborAndRelatedExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LaborAndRelatedExpense us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment