3.23.2 html 748 484 1 false 212 0 false 19 false false R1.htm 0000001 - Document - Cover Page Sheet http://nrucfc.coop/role/CoverPage Cover Page Cover 1 false false R2.htm 0000002 - Document - Audit Information Sheet http://nrucfc.coop/role/AuditInformation Audit Information Cover 2 false false R3.htm 0000003 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS Sheet http://nrucfc.coop/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS CONSOLIDATED STATEMENTS OF OPERATIONS Statements 3 false false R4.htm 0000004 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://nrucfc.coop/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 4 false false R5.htm 0000005 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://nrucfc.coop/role/CONSOLIDATEDBALANCESHEETS CONSOLIDATED BALANCE SHEETS Statements 5 false false R6.htm 0000006 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Sheet http://nrucfc.coop/role/CONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY Statements 6 false false R7.htm 0000007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://nrucfc.coop/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 7 false false R8.htm 0000008 - Disclosure - Summary of Significant Accounting Policies Sheet http://nrucfc.coop/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 0000009 - Disclosure - Interest Income and Interest Expense Sheet http://nrucfc.coop/role/InterestIncomeandInterestExpense Interest Income and Interest Expense Notes 9 false false R10.htm 0000010 - Disclosure - Investment Securities Sheet http://nrucfc.coop/role/InvestmentSecurities Investment Securities Notes 10 false false R11.htm 0000011 - Disclosure - Loans Sheet http://nrucfc.coop/role/Loans Loans Notes 11 false false R12.htm 0000012 - Disclosure - Allowance for Credit Losses Sheet http://nrucfc.coop/role/AllowanceforCreditLosses Allowance for Credit Losses Notes 12 false false R13.htm 0000013 - Disclosure - Short-Term Borrowings Sheet http://nrucfc.coop/role/ShortTermBorrowings Short-Term Borrowings Notes 13 false false R14.htm 0000014 - Disclosure - Long-Term Debt Sheet http://nrucfc.coop/role/LongTermDebt Long-Term Debt Notes 14 false false R15.htm 0000015 - Disclosure - Subordinated Deferrable Debt Sheet http://nrucfc.coop/role/SubordinatedDeferrableDebt Subordinated Deferrable Debt Notes 15 false false R16.htm 0000016 - Disclosure - Members' Subordinated Certificates Sheet http://nrucfc.coop/role/MembersSubordinatedCertificates Members' Subordinated Certificates Notes 16 false false R17.htm 0000017 - Disclosure - Derivative Instruments and Hedging Activities Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivities Derivative Instruments and Hedging Activities Notes 17 false false R18.htm 0000018 - Disclosure - Equity Sheet http://nrucfc.coop/role/Equity Equity Notes 18 false false R19.htm 0000019 - Disclosure - Employee Benefits Sheet http://nrucfc.coop/role/EmployeeBenefits Employee Benefits Notes 19 false false R20.htm 0000020 - Disclosure - Guarantees Sheet http://nrucfc.coop/role/Guarantees Guarantees Notes 20 false false R21.htm 0000021 - Disclosure - Fair Value Measurement Sheet http://nrucfc.coop/role/FairValueMeasurement Fair Value Measurement Notes 21 false false R22.htm 0000022 - Disclosure - Variable Interest Entities Sheet http://nrucfc.coop/role/VariableInterestEntities Variable Interest Entities Notes 22 false false R23.htm 0000023 - Disclosure - Business Segments Sheet http://nrucfc.coop/role/BusinessSegments Business Segments Notes 23 false false R24.htm 9954701 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://nrucfc.coop/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://nrucfc.coop/role/SummaryofSignificantAccountingPolicies 24 false false R25.htm 9954702 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://nrucfc.coop/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://nrucfc.coop/role/SummaryofSignificantAccountingPolicies 25 false false R26.htm 9954703 - Disclosure - Interest Income and Interest Expense (Tables) Sheet http://nrucfc.coop/role/InterestIncomeandInterestExpenseTables Interest Income and Interest Expense (Tables) Tables http://nrucfc.coop/role/InterestIncomeandInterestExpense 26 false false R27.htm 9954704 - Disclosure - Investment Securities (Tables) Sheet http://nrucfc.coop/role/InvestmentSecuritiesTables Investment Securities (Tables) Tables http://nrucfc.coop/role/InvestmentSecurities 27 false false R28.htm 9954705 - Disclosure - Loans (Tables) Sheet http://nrucfc.coop/role/LoansTables Loans (Tables) Tables http://nrucfc.coop/role/Loans 28 false false R29.htm 9954706 - Disclosure - Allowance for Credit Losses - (Tables) Sheet http://nrucfc.coop/role/AllowanceforCreditLossesTables Allowance for Credit Losses - (Tables) Tables http://nrucfc.coop/role/AllowanceforCreditLosses 29 false false R30.htm 9954707 - Disclosure - Short-Term Borrowings (Tables) Sheet http://nrucfc.coop/role/ShortTermBorrowingsTables Short-Term Borrowings (Tables) Tables http://nrucfc.coop/role/ShortTermBorrowings 30 false false R31.htm 9954708 - Disclosure - Long-Term Debt (Tables) Sheet http://nrucfc.coop/role/LongTermDebtTables Long-Term Debt (Tables) Tables http://nrucfc.coop/role/LongTermDebt 31 false false R32.htm 9954709 - Disclosure - Subordinated Deferrable Debt (Tables) Sheet http://nrucfc.coop/role/SubordinatedDeferrableDebtTables Subordinated Deferrable Debt (Tables) Tables http://nrucfc.coop/role/SubordinatedDeferrableDebt 32 false false R33.htm 9954710 - Disclosure - Members' Subordinated Certificates (Tables) Sheet http://nrucfc.coop/role/MembersSubordinatedCertificatesTables Members' Subordinated Certificates (Tables) Tables http://nrucfc.coop/role/MembersSubordinatedCertificates 33 false false R34.htm 9954711 - Disclosure - Derivative Instruments and Hedging Activities (Tables) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesTables Derivative Instruments and Hedging Activities (Tables) Tables http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivities 34 false false R35.htm 9954712 - Disclosure - Equity (Tables) Sheet http://nrucfc.coop/role/EquityTables Equity (Tables) Tables http://nrucfc.coop/role/Equity 35 false false R36.htm 9954713 - Disclosure - Guarantees (Tables) Sheet http://nrucfc.coop/role/GuaranteesTables Guarantees (Tables) Tables http://nrucfc.coop/role/Guarantees 36 false false R37.htm 9954714 - Disclosure - Fair Value Measurement (Tables) Sheet http://nrucfc.coop/role/FairValueMeasurementTables Fair Value Measurement (Tables) Tables http://nrucfc.coop/role/FairValueMeasurement 37 false false R38.htm 9954715 - Disclosure - Variable Interest Entities (Tables) Sheet http://nrucfc.coop/role/VariableInterestEntitiesTables Variable Interest Entities (Tables) Tables http://nrucfc.coop/role/VariableInterestEntities 38 false false R39.htm 9954716 - Disclosure - Business Segments (Tables) Sheet http://nrucfc.coop/role/BusinessSegmentsTables Business Segments (Tables) Tables http://nrucfc.coop/role/BusinessSegments 39 false false R40.htm 9954717 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) Sheet http://nrucfc.coop/role/SummaryofSignificantAccountingPoliciesNarrativeDetails Summary of Significant Accounting Policies - Narrative (Details) Details 40 false false R41.htm 9954718 - Disclosure - Summary of Significant Accounting Policies - Schedule of fixed assets (Details) Sheet http://nrucfc.coop/role/SummaryofSignificantAccountingPoliciesScheduleoffixedassetsDetails Summary of Significant Accounting Policies - Schedule of fixed assets (Details) Details 41 false false R42.htm 9954719 - Disclosure - Interest Income and Interest Expense - Schedule of interest income and expense (Details) Sheet http://nrucfc.coop/role/InterestIncomeandInterestExpenseScheduleofinterestincomeandexpenseDetails Interest Income and Interest Expense - Schedule of interest income and expense (Details) Details 42 false false R43.htm 9954720 - Disclosure - Interest Income and Interest Expense - Narrative (Details) Sheet http://nrucfc.coop/role/InterestIncomeandInterestExpenseNarrativeDetails Interest Income and Interest Expense - Narrative (Details) Details 43 false false R44.htm 9954721 - Disclosure - Investment Securities - Schedule of composition of investments in debt securities (Details) Sheet http://nrucfc.coop/role/InvestmentSecuritiesScheduleofcompositionofinvestmentsindebtsecuritiesDetails Investment Securities - Schedule of composition of investments in debt securities (Details) Details 44 false false R45.htm 9954722 - Disclosure - Investment Securities - Narrative (Details) Sheet http://nrucfc.coop/role/InvestmentSecuritiesNarrativeDetails Investment Securities - Narrative (Details) Details 45 false false R46.htm 9954723 - Disclosure - Investment Securities - Schedule of investments in equity securities (Details) Sheet http://nrucfc.coop/role/InvestmentSecuritiesScheduleofinvestmentsinequitysecuritiesDetails Investment Securities - Schedule of investments in equity securities (Details) Details 46 false false R47.htm 9954724 - Disclosure - Loans - Narrative (Details) Sheet http://nrucfc.coop/role/LoansNarrativeDetails Loans - Narrative (Details) Details 47 false false R48.htm 9954725 - Disclosure - Loans - Schedule of loans outstanding to members and unadvanced commitments by loan type and by member class (Details) Sheet http://nrucfc.coop/role/LoansScheduleofloansoutstandingtomembersandunadvancedcommitmentsbyloantypeandbymemberclassDetails Loans - Schedule of loans outstanding to members and unadvanced commitments by loan type and by member class (Details) Details 48 false false R49.htm 9954726 - Disclosure - Loans - Schedules of concentration of risk (Details) Sheet http://nrucfc.coop/role/LoansSchedulesofconcentrationofriskDetails Loans - Schedules of concentration of risk (Details) Details 49 false false R50.htm 9954727 - Disclosure - Loans - Schedule of analysis of the age of the recorded investment in loans outstanding by member class (Details) Sheet http://nrucfc.coop/role/LoansScheduleofanalysisoftheageoftherecordedinvestmentinloansoutstandingbymemberclassDetails Loans - Schedule of analysis of the age of the recorded investment in loans outstanding by member class (Details) Details 50 false false R51.htm 9954728 - Disclosure - Loans - Schedule of troubled debt restructured loans (Details) Sheet http://nrucfc.coop/role/LoansScheduleoftroubleddebtrestructuredloansDetails Loans - Schedule of troubled debt restructured loans (Details) Details 51 false false R52.htm 9954729 - Disclosure - Loans - Schedule of non-performing loans (Details) Sheet http://nrucfc.coop/role/LoansScheduleofnonperformingloansDetails Loans - Schedule of non-performing loans (Details) Details 52 false false R53.htm 9954730 - Disclosure - Loans - Schedule of loan portfolio by risk rating category and member class based on available data (Details) Sheet http://nrucfc.coop/role/LoansScheduleofloanportfoliobyriskratingcategoryandmemberclassbasedonavailabledataDetails Loans - Schedule of loan portfolio by risk rating category and member class based on available data (Details) Details 53 false false R54.htm 9954731 - Disclosure - Loans - Schedule of unadvanced commitments (Details) Sheet http://nrucfc.coop/role/LoansScheduleofunadvancedcommitmentsDetails Loans - Schedule of unadvanced commitments (Details) Details 54 false false R55.htm 9954732 - Disclosure - Loans - Schedule of available balances under unadvanced loan commitments (Details) Sheet http://nrucfc.coop/role/LoansScheduleofavailablebalancesunderunadvancedloancommitmentsDetails Loans - Schedule of available balances under unadvanced loan commitments (Details) Details 55 false false R56.htm 9954733 - Disclosure - Loans - Summary of available balance under committed lines of credit and the related maturities by fiscal year (Details) Sheet http://nrucfc.coop/role/LoansSummaryofavailablebalanceundercommittedlinesofcreditandtherelatedmaturitiesbyfiscalyearDetails Loans - Summary of available balance under committed lines of credit and the related maturities by fiscal year (Details) Details 56 false false R57.htm 9954734 - Disclosure - Loans - Summary of pledged loans (Details) Sheet http://nrucfc.coop/role/LoansSummaryofpledgedloansDetails Loans - Summary of pledged loans (Details) Details 57 false false R58.htm 9954735 - Disclosure - Allowance for Credit Losses - Schedule of changes in allowance for credit losses (Details) Sheet http://nrucfc.coop/role/AllowanceforCreditLossesScheduleofchangesinallowanceforcreditlossesDetails Allowance for Credit Losses - Schedule of changes in allowance for credit losses (Details) Details 58 false false R59.htm 9954736 - Disclosure - Allowance for Credit Losses - Narrative (Details) Sheet http://nrucfc.coop/role/AllowanceforCreditLossesNarrativeDetails Allowance for Credit Losses - Narrative (Details) Details 59 false false R60.htm 9954737 - Disclosure - Allowance for Credit Losses - Schedule of allowance for credit losses components (Details) Sheet http://nrucfc.coop/role/AllowanceforCreditLossesScheduleofallowanceforcreditlossescomponentsDetails Allowance for Credit Losses - Schedule of allowance for credit losses components (Details) Details 60 false false R61.htm 9954738 - Disclosure - Short-Term Borrowings - Narrative (Details) Sheet http://nrucfc.coop/role/ShortTermBorrowingsNarrativeDetails Short-Term Borrowings - Narrative (Details) Details 61 false false R62.htm 9954739 - Disclosure - Short-Term Borrowings - Summary of short-term debt outstanding and the weighted-average effective interest rates (Details) Sheet http://nrucfc.coop/role/ShortTermBorrowingsSummaryofshorttermdebtoutstandingandtheweightedaverageeffectiveinterestratesDetails Short-Term Borrowings - Summary of short-term debt outstanding and the weighted-average effective interest rates (Details) Details 62 false false R63.htm 9954740 - Disclosure - Short-Term Borrowings - Schedule of total available and outstanding letters of credit under the revolving credit agreements (Details) Sheet http://nrucfc.coop/role/ShortTermBorrowingsScheduleoftotalavailableandoutstandinglettersofcreditundertherevolvingcreditagreementsDetails Short-Term Borrowings - Schedule of total available and outstanding letters of credit under the revolving credit agreements (Details) Details 63 false false R64.htm 9954741 - Disclosure - Long-Term Debt - Narrative (Details) Sheet http://nrucfc.coop/role/LongTermDebtNarrativeDetails Long-Term Debt - Narrative (Details) Details 64 false false R65.htm 9954742 - Disclosure - Long-Term Debt - Summary of long-term debt outstanding and the weighted-average effective interest rates (Details) Sheet http://nrucfc.coop/role/LongTermDebtSummaryoflongtermdebtoutstandingandtheweightedaverageeffectiveinterestratesDetails Long-Term Debt - Summary of long-term debt outstanding and the weighted-average effective interest rates (Details) Details 65 false false R66.htm 9954743 - Disclosure - Long-Term Debt - Schedule of amount of long-term debt maturities (Details) Sheet http://nrucfc.coop/role/LongTermDebtScheduleofamountoflongtermdebtmaturitiesDetails Long-Term Debt - Schedule of amount of long-term debt maturities (Details) Details 66 false false R67.htm 9954744 - Disclosure - Subordinated Deferrable Debt - Narrative (Details) Sheet http://nrucfc.coop/role/SubordinatedDeferrableDebtNarrativeDetails Subordinated Deferrable Debt - Narrative (Details) Details 67 false false R68.htm 9954745 - Disclosure - Subordinated Deferrable Debt - Subordinated deferrable debt outstanding and weighted-average interest rates (Details) Sheet http://nrucfc.coop/role/SubordinatedDeferrableDebtSubordinateddeferrabledebtoutstandingandweightedaverageinterestratesDetails Subordinated Deferrable Debt - Subordinated deferrable debt outstanding and weighted-average interest rates (Details) Details 68 false false R69.htm 9954746 - Disclosure - Members' Subordinated Certificates - Narrative (Details) Sheet http://nrucfc.coop/role/MembersSubordinatedCertificatesNarrativeDetails Members' Subordinated Certificates - Narrative (Details) Details 69 false false R70.htm 9954747 - Disclosure - Members' Subordinated Certificates - Schedule of subordinated borrowing (Details) Sheet http://nrucfc.coop/role/MembersSubordinatedCertificatesScheduleofsubordinatedborrowingDetails Members' Subordinated Certificates - Schedule of subordinated borrowing (Details) Details 70 false false R71.htm 9954748 - Disclosure - Members' Subordinated Certificates - Schedule of amount of members' subordinated certificates maturing in each of the five fiscal years (Details) Sheet http://nrucfc.coop/role/MembersSubordinatedCertificatesScheduleofamountofmemberssubordinatedcertificatesmaturingineachofthefivefiscalyearsDetails Members' Subordinated Certificates - Schedule of amount of members' subordinated certificates maturing in each of the five fiscal years (Details) Details 71 false false R72.htm 9954749 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of derivative notional amount and weighted-average rates (Details) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesScheduleofderivativenotionalamountandweightedaverageratesDetails Derivative Instruments and Hedging Activities - Schedule of derivative notional amount and weighted-average rates (Details) Details 72 false false R73.htm 9954750 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of derivative instruments maturity (Details) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesScheduleofderivativeinstrumentsmaturityDetails Derivative Instruments and Hedging Activities - Schedule of derivative instruments maturity (Details) Details 73 false false R74.htm 9954751 - Disclosure - Derivative Instruments and Hedging Activities - Narrative (Details) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesNarrativeDetails Derivative Instruments and Hedging Activities - Narrative (Details) Details 74 false false R75.htm 9954752 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of derivative instruments on consolidated balance sheets (Details) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesScheduleofderivativeinstrumentsonconsolidatedbalancesheetsDetails Derivative Instruments and Hedging Activities - Schedule of derivative instruments on consolidated balance sheets (Details) Details 75 false false R76.htm 9954753 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of derivatives offsetting (Details) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesScheduleofderivativesoffsettingDetails Derivative Instruments and Hedging Activities - Schedule of derivatives offsetting (Details) Details 76 false false R77.htm 9954754 - Disclosure - Derivative Instruments and Hedging Activities - Summary of gains and losses recorded on the consolidated statements of operations for the entity's derivatives (Details) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesSummaryofgainsandlossesrecordedontheconsolidatedstatementsofoperationsfortheentitysderivativesDetails Derivative Instruments and Hedging Activities - Summary of gains and losses recorded on the consolidated statements of operations for the entity's derivatives (Details) Details 77 false false R78.htm 9954755 - Disclosure - Derivative Instruments and Hedging Activities - Derivatives - Schedule of notional amounts of derivative instruments having rating triggers (Details) Sheet http://nrucfc.coop/role/DerivativeInstrumentsandHedgingActivitiesDerivativesScheduleofnotionalamountsofderivativeinstrumentshavingratingtriggersDetails Derivative Instruments and Hedging Activities - Derivatives - Schedule of notional amounts of derivative instruments having rating triggers (Details) Details 78 false false R79.htm 9954756 - Disclosure - Equity - Narrative (Details) Sheet http://nrucfc.coop/role/EquityNarrativeDetails Equity - Narrative (Details) Details 79 false false R80.htm 9954757 - Disclosure - Equity - Schedule of components of equity (Details) Sheet http://nrucfc.coop/role/EquityScheduleofcomponentsofequityDetails Equity - Schedule of components of equity (Details) Details 80 false false R81.htm 9954758 - Disclosure - Equity - Summary of activity in accumulated other comprehensive income account by component (Details) Sheet http://nrucfc.coop/role/EquitySummaryofactivityinaccumulatedothercomprehensiveincomeaccountbycomponentDetails Equity - Summary of activity in accumulated other comprehensive income account by component (Details) Details 81 false false R82.htm 9954759 - Disclosure - Employee Benefits - Narrative (Details) Sheet http://nrucfc.coop/role/EmployeeBenefitsNarrativeDetails Employee Benefits - Narrative (Details) Details 82 false false R83.htm 9954760 - Disclosure - Guarantees - Summary of total guarantees by type of guarantee and member class (Details) Sheet http://nrucfc.coop/role/GuaranteesSummaryoftotalguaranteesbytypeofguaranteeandmemberclassDetails Guarantees - Summary of total guarantees by type of guarantee and member class (Details) Details 83 false false R84.htm 9954761 - Disclosure - Guarantees - Narrative (Details) Sheet http://nrucfc.coop/role/GuaranteesNarrativeDetails Guarantees - Narrative (Details) Details 84 false false R85.htm 9954762 - Disclosure - Guarantees - Schedule of maturities of outstanding guarantees (Details) Sheet http://nrucfc.coop/role/GuaranteesScheduleofmaturitiesofoutstandingguaranteesDetails Guarantees - Schedule of maturities of outstanding guarantees (Details) Details 85 false false R86.htm 9954763 - Disclosure - Fair Value Measurement - Schedule of carrying and fair values for entity's financial instruments (Details) Sheet http://nrucfc.coop/role/FairValueMeasurementScheduleofcarryingandfairvaluesforentitysfinancialinstrumentsDetails Fair Value Measurement - Schedule of carrying and fair values for entity's financial instruments (Details) Details 86 false false R87.htm 9954764 - Disclosure - Fair Value Measurement - Schedule of fair value, assets and liabilities measured on recurring basis (Details) Sheet http://nrucfc.coop/role/FairValueMeasurementScheduleoffairvalueassetsandliabilitiesmeasuredonrecurringbasisDetails Fair Value Measurement - Schedule of fair value, assets and liabilities measured on recurring basis (Details) Details 87 false false R88.htm 9954765 - Disclosure - Fair Value Measurement - Narrative (Details) Sheet http://nrucfc.coop/role/FairValueMeasurementNarrativeDetails Fair Value Measurement - Narrative (Details) Details 88 false false R89.htm 9954766 - Disclosure - Variable Interest Entities - Schedule of variable interest entities (Details) Sheet http://nrucfc.coop/role/VariableInterestEntitiesScheduleofvariableinterestentitiesDetails Variable Interest Entities - Schedule of variable interest entities (Details) Details 89 false false R90.htm 9954767 - Disclosure - Variable Interest Entities - Schedule of variable interest entities, credit commitments (Details) Sheet http://nrucfc.coop/role/VariableInterestEntitiesScheduleofvariableinterestentitiescreditcommitmentsDetails Variable Interest Entities - Schedule of variable interest entities, credit commitments (Details) Details 90 false false R91.htm 9954768 - Disclosure - Variable Interest Entities - Narrative (Details) Sheet http://nrucfc.coop/role/VariableInterestEntitiesNarrativeDetails Variable Interest Entities - Narrative (Details) Details 91 false false R92.htm 9954769 - Disclosure - Business Segments - Narrative (Details) Sheet http://nrucfc.coop/role/BusinessSegmentsNarrativeDetails Business Segments - Narrative (Details) Details 92 false false R93.htm 9954770 - Disclosure - Business Segments - Schedule of segment presentation for the consolidated statements of operations and consolidated balance sheets (Details) Sheet http://nrucfc.coop/role/BusinessSegmentsScheduleofsegmentpresentationfortheconsolidatedstatementsofoperationsandconsolidatedbalancesheetsDetails Business Segments - Schedule of segment presentation for the consolidated statements of operations and consolidated balance sheets (Details) Details 93 false false All Reports Book All Reports [ix-0514-Hidden-Fact-Eligible-For-Transform] WARN: 5 fact(s) appearing in ix:hidden were eligible for transformation: dei:EntityPublicFloat, nru:DebtInstrumentConsecutivePeriodForWhichInterestPaymentCanBeDeferred, nru:TermOfLoans, us-gaap:DebtInstrumentTerm, us-gaap:PropertyPlantAndEquipmentUsefulLife - nru-20230531.htm 4 nru-20230531.htm nru-20230531.xsd nru-20230531_cal.xml nru-20230531_def.xml nru-20230531_lab.xml nru-20230531_pre.xml nrufy2023form-ex321ceocert.htm nrufy2023form-ex322xcfocer.htm nrufy2023formex231consento.htm nrufy2023formex311-ceocert.htm nrufy2023formex312-cfocert.htm nru-20230531_g1.jpg http://fasb.org/srt/2023 http://fasb.org/us-gaap/2023 http://xbrl.sec.gov/dei/2023 true true