3.22.2 html 962 470 1 true 219 0 false 10 false false R1.htm 0001001 - Document - Cover Sheet http://www.jefferies.com/role/Cover Cover Cover 1 false false R2.htm 1001002 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALCONDITIONUNAUDITED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) Statements 2 false false R3.htm 1002003 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) (Parenthetical) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALCONDITIONUNAUDITEDParenthetical CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) (Parenthetical) Statements 3 false false R4.htm 1003004 - Statement - CONSOLIDATED STATEMENTS OF EARNINGS (UNAUDITED) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFEARNINGSUNAUDITED CONSOLIDATED STATEMENTS OF EARNINGS (UNAUDITED) Statements 4 false false R5.htm 1004005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) Statements 5 false false R6.htm 1005006 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOMEUNAUDITEDParenthetical CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) Statements 6 false false R7.htm 1006007 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINEQUITYUNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) Statements 7 false false R8.htm 1007008 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) Statements 8 false false R9.htm 1008009 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (Parenthetical) Sheet http://www.jefferies.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWSUNAUDITEDParenthetical CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (Parenthetical) Statements 9 false false R10.htm 2101101 - Disclosure - Organization and Basis of Presentation Sheet http://www.jefferies.com/role/OrganizationandBasisofPresentation Organization and Basis of Presentation Notes 10 false false R11.htm 2103102 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.jefferies.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 11 false false R12.htm 2108103 - Disclosure - Fair Value Disclosures Sheet http://www.jefferies.com/role/FairValueDisclosures Fair Value Disclosures Notes 12 false false R13.htm 2117104 - Disclosure - Derivative Financial Instruments Sheet http://www.jefferies.com/role/DerivativeFinancialInstruments Derivative Financial Instruments Notes 13 false false R14.htm 2125105 - Disclosure - Collateralized Transactions Sheet http://www.jefferies.com/role/CollateralizedTransactions Collateralized Transactions Notes 14 false false R15.htm 2131106 - Disclosure - Securitization Activities Sheet http://www.jefferies.com/role/SecuritizationActivities Securitization Activities Notes 15 false false R16.htm 2135107 - Disclosure - Variable Interest Entities Sheet http://www.jefferies.com/role/VariableInterestEntities Variable Interest Entities Notes 16 false false R17.htm 2140108 - Disclosure - Investments Sheet http://www.jefferies.com/role/Investments Investments Notes 17 false false R18.htm 2151109 - Disclosure - Goodwill and Intangible Assets Sheet http://www.jefferies.com/role/GoodwillandIntangibleAssets Goodwill and Intangible Assets Notes 18 false false R19.htm 2156110 - Disclosure - Short-Term Borrowings Sheet http://www.jefferies.com/role/ShortTermBorrowings Short-Term Borrowings Notes 19 false false R20.htm 2160111 - Disclosure - Long-Term Debt Sheet http://www.jefferies.com/role/LongTermDebt Long-Term Debt Notes 20 false false R21.htm 2164112 - Disclosure - Revenues from Contracts with Customers Sheet http://www.jefferies.com/role/RevenuesfromContractswithCustomers Revenues from Contracts with Customers Notes 21 false false R22.htm 2170113 - Disclosure - Compensation Plans Sheet http://www.jefferies.com/role/CompensationPlans Compensation Plans Notes 22 false false R23.htm 2174114 - Disclosure - Income Taxes Sheet http://www.jefferies.com/role/IncomeTaxes Income Taxes Notes 23 false false R24.htm 2177115 - Disclosure - Commitments, Contingencies and Guarantees Sheet http://www.jefferies.com/role/CommitmentsContingenciesandGuarantees Commitments, Contingencies and Guarantees Notes 24 false false R25.htm 2182116 - Disclosure - Net Capital Requirements Sheet http://www.jefferies.com/role/NetCapitalRequirements Net Capital Requirements Notes 25 false false R26.htm 2185117 - Disclosure - Segment Reporting Sheet http://www.jefferies.com/role/SegmentReporting Segment Reporting Notes 26 false false R27.htm 2190118 - Disclosure - Related Party Transactions Sheet http://www.jefferies.com/role/RelatedPartyTransactions Related Party Transactions Notes 27 false false R28.htm 2204201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.jefferies.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.jefferies.com/role/SummaryofSignificantAccountingPolicies 28 false false R29.htm 2305301 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.jefferies.com/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.jefferies.com/role/SummaryofSignificantAccountingPolicies 29 false false R30.htm 2309302 - Disclosure - Fair Value Disclosures (Tables) Sheet http://www.jefferies.com/role/FairValueDisclosuresTables Fair Value Disclosures (Tables) Tables http://www.jefferies.com/role/FairValueDisclosures 30 false false R31.htm 2318303 - Disclosure - Derivative Financial Instruments (Tables) Sheet http://www.jefferies.com/role/DerivativeFinancialInstrumentsTables Derivative Financial Instruments (Tables) Tables http://www.jefferies.com/role/DerivativeFinancialInstruments 31 false false R32.htm 2326304 - Disclosure - Collateralized Transactions (Tables) Sheet http://www.jefferies.com/role/CollateralizedTransactionsTables Collateralized Transactions (Tables) Tables http://www.jefferies.com/role/CollateralizedTransactions 32 false false R33.htm 2332305 - Disclosure - Securitization Activities (Tables) Sheet http://www.jefferies.com/role/SecuritizationActivitiesTables Securitization Activities (Tables) Tables http://www.jefferies.com/role/SecuritizationActivities 33 false false R34.htm 2336306 - Disclosure - Variable Interest Entities (Tables) Sheet http://www.jefferies.com/role/VariableInterestEntitiesTables Variable Interest Entities (Tables) Tables http://www.jefferies.com/role/VariableInterestEntities 34 false false R35.htm 2341307 - Disclosure - Investments (Tables) Sheet http://www.jefferies.com/role/InvestmentsTables Investments (Tables) Tables http://www.jefferies.com/role/Investments 35 false false R36.htm 2352308 - Disclosure - Goodwill and Intangible Assets (Tables) Sheet http://www.jefferies.com/role/GoodwillandIntangibleAssetsTables Goodwill and Intangible Assets (Tables) Tables http://www.jefferies.com/role/GoodwillandIntangibleAssets 36 false false R37.htm 2357309 - Disclosure - Short-Term Borrowings (Tables) Sheet http://www.jefferies.com/role/ShortTermBorrowingsTables Short-Term Borrowings (Tables) Tables http://www.jefferies.com/role/ShortTermBorrowings 37 false false R38.htm 2361310 - Disclosure - Long-Term Debt (Tables) Sheet http://www.jefferies.com/role/LongTermDebtTables Long-Term Debt (Tables) Tables http://www.jefferies.com/role/LongTermDebt 38 false false R39.htm 2365311 - Disclosure - Revenues from Contracts with Customers (Tables) Sheet http://www.jefferies.com/role/RevenuesfromContractswithCustomersTables Revenues from Contracts with Customers (Tables) Tables http://www.jefferies.com/role/RevenuesfromContractswithCustomers 39 false false R40.htm 2371312 - Disclosure - Compensation Plans (Tables) Sheet http://www.jefferies.com/role/CompensationPlansTables Compensation Plans (Tables) Tables http://www.jefferies.com/role/CompensationPlans 40 false false R41.htm 2375313 - Disclosure - Income Taxes (Tables) Sheet http://www.jefferies.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.jefferies.com/role/IncomeTaxes 41 false false R42.htm 2378314 - Disclosure - Commitments, Contingencies and Guarantees (Tables) Sheet http://www.jefferies.com/role/CommitmentsContingenciesandGuaranteesTables Commitments, Contingencies and Guarantees (Tables) Tables http://www.jefferies.com/role/CommitmentsContingenciesandGuarantees 42 false false R43.htm 2383315 - Disclosure - Net Capital Requirements (Tables) Sheet http://www.jefferies.com/role/NetCapitalRequirementsTables Net Capital Requirements (Tables) Tables http://www.jefferies.com/role/NetCapitalRequirements 43 false false R44.htm 2386316 - Disclosure - Segment Reporting (Tables) Sheet http://www.jefferies.com/role/SegmentReportingTables Segment Reporting (Tables) Tables http://www.jefferies.com/role/SegmentReporting 44 false false R45.htm 2391317 - Disclosure - Related Party Transactions (Tables) Sheet http://www.jefferies.com/role/RelatedPartyTransactionsTables Related Party Transactions (Tables) Tables http://www.jefferies.com/role/RelatedPartyTransactions 45 false false R46.htm 2402401 - Disclosure - Organization and Basis of Presentation (Details) Sheet http://www.jefferies.com/role/OrganizationandBasisofPresentationDetails Organization and Basis of Presentation (Details) Details http://www.jefferies.com/role/OrganizationandBasisofPresentation 46 false false R47.htm 2406402 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details) Sheet http://www.jefferies.com/role/SummaryofSignificantAccountingPoliciesAdditionalInformationDetails Summary of Significant Accounting Policies - Additional Information (Details) Details 47 false false R48.htm 2407403 - Disclosure - Summary of Significant Accounting Policies - Rollforward of Automobile Allowance for Credit Loss (Details) Sheet http://www.jefferies.com/role/SummaryofSignificantAccountingPoliciesRollforwardofAutomobileAllowanceforCreditLossDetails Summary of Significant Accounting Policies - Rollforward of Automobile Allowance for Credit Loss (Details) Details 48 false false R49.htm 2410404 - Disclosure - Fair Value Disclosures - Financial Assets and Liabilities Accounted for at Fair Value on Recurring Basis (Details) Sheet http://www.jefferies.com/role/FairValueDisclosuresFinancialAssetsandLiabilitiesAccountedforatFairValueonRecurringBasisDetails Fair Value Disclosures - Financial Assets and Liabilities Accounted for at Fair Value on Recurring Basis (Details) Details 49 false false R50.htm 2411405 - Disclosure - Fair Value Disclosures - Investments Measured at Fair Value Based on Net Asset Value Per Share (Details) Sheet http://www.jefferies.com/role/FairValueDisclosuresInvestmentsMeasuredatFairValueBasedonNetAssetValuePerShareDetails Fair Value Disclosures - Investments Measured at Fair Value Based on Net Asset Value Per Share (Details) Details 50 false false R51.htm 2412406 - Disclosure - Fair Value Disclosures - Level 3 Rollforwards (Details) Sheet http://www.jefferies.com/role/FairValueDisclosuresLevel3RollforwardsDetails Fair Value Disclosures - Level 3 Rollforwards (Details) Details 51 false false R52.htm 2413407 - Disclosure - Fair Value Disclosures - Additional Information (Details) Sheet http://www.jefferies.com/role/FairValueDisclosuresAdditionalInformationDetails Fair Value Disclosures - Additional Information (Details) Details 52 false false R53.htm 2414408 - Disclosure - Fair Value Disclosures - Quantitative Information about Significant Unobservable Inputs Used in Level 3 Fair Value Measurements (Details) Sheet http://www.jefferies.com/role/FairValueDisclosuresQuantitativeInformationaboutSignificantUnobservableInputsUsedinLevel3FairValueMeasurementsDetails Fair Value Disclosures - Quantitative Information about Significant Unobservable Inputs Used in Level 3 Fair Value Measurements (Details) Details 53 false false R54.htm 2415409 - Disclosure - Fair Value Disclosures - Summary of Gains (Losses) Due to Changes in Instrument Specific Credit Risk for Loans and Other Receivables and Loan Commitments Measured at Fair Value under Fair Value Option (Details) Sheet http://www.jefferies.com/role/FairValueDisclosuresSummaryofGainsLossesDuetoChangesinInstrumentSpecificCreditRiskforLoansandOtherReceivablesandLoanCommitmentsMeasuredatFairValueunderFairValueOptionDetails Fair Value Disclosures - Summary of Gains (Losses) Due to Changes in Instrument Specific Credit Risk for Loans and Other Receivables and Loan Commitments Measured at Fair Value under Fair Value Option (Details) Details 54 false false R55.htm 2416410 - Disclosure - Fair Value Disclosures - Summary of Amount by Which Contractual Principal Exceeds Fair Value for Loans and Other Receivables Measured at Fair Value under Fair Value Option (Details) Sheet http://www.jefferies.com/role/FairValueDisclosuresSummaryofAmountbyWhichContractualPrincipalExceedsFairValueforLoansandOtherReceivablesMeasuredatFairValueunderFairValueOptionDetails Fair Value Disclosures - Summary of Amount by Which Contractual Principal Exceeds Fair Value for Loans and Other Receivables Measured at Fair Value under Fair Value Option (Details) Details 55 false false R56.htm 2419411 - Disclosure - Derivative Financial Instruments - Fair Value and Related Number of Derivative Contracts Categorized by Type of Derivative Contract (Details) Sheet http://www.jefferies.com/role/DerivativeFinancialInstrumentsFairValueandRelatedNumberofDerivativeContractsCategorizedbyTypeofDerivativeContractDetails Derivative Financial Instruments - Fair Value and Related Number of Derivative Contracts Categorized by Type of Derivative Contract (Details) Details 56 false false R57.htm 2420412 - Disclosure - Derivative Financial Instruments - Unrealized and Realized Gains (Losses) on Derivative Contracts (Details) Sheet http://www.jefferies.com/role/DerivativeFinancialInstrumentsUnrealizedandRealizedGainsLossesonDerivativeContractsDetails Derivative Financial Instruments - Unrealized and Realized Gains (Losses) on Derivative Contracts (Details) Details 57 false false R58.htm 2421413 - Disclosure - Derivative Financial Instruments - Remaining Contract Maturity of Fair Value of OTC Derivative Assets and Liabilities (Details) Sheet http://www.jefferies.com/role/DerivativeFinancialInstrumentsRemainingContractMaturityofFairValueofOTCDerivativeAssetsandLiabilitiesDetails Derivative Financial Instruments - Remaining Contract Maturity of Fair Value of OTC Derivative Assets and Liabilities (Details) Details 58 false false R59.htm 2422414 - Disclosure - Derivative Financial Instruments - Counterparty Credit Quality with Respect to Fair Value of OTC Derivatives Assets (Details) Sheet http://www.jefferies.com/role/DerivativeFinancialInstrumentsCounterpartyCreditQualitywithRespecttoFairValueofOTCDerivativesAssetsDetails Derivative Financial Instruments - Counterparty Credit Quality with Respect to Fair Value of OTC Derivatives Assets (Details) Details 59 false false R60.htm 2423415 - Disclosure - Derivative Financial Instruments - External Credit Ratings of Underlyings or Referenced Assets (Details) Sheet http://www.jefferies.com/role/DerivativeFinancialInstrumentsExternalCreditRatingsofUnderlyingsorReferencedAssetsDetails Derivative Financial Instruments - External Credit Ratings of Underlyings or Referenced Assets (Details) Details 60 false false R61.htm 2424416 - Disclosure - Derivative Financial Instruments - Contingent Features (Details) Sheet http://www.jefferies.com/role/DerivativeFinancialInstrumentsContingentFeaturesDetails Derivative Financial Instruments - Contingent Features (Details) Details 61 false false R62.htm 2427417 - Disclosure - Collateralized Transactions - Collateral Pledged (Details) Sheet http://www.jefferies.com/role/CollateralizedTransactionsCollateralPledgedDetails Collateralized Transactions - Collateral Pledged (Details) Details 62 false false R63.htm 2428418 - Disclosure - Collateralized Transactions - Contractual Maturity (Details) Sheet http://www.jefferies.com/role/CollateralizedTransactionsContractualMaturityDetails Collateralized Transactions - Contractual Maturity (Details) Details 63 false false R64.htm 2429419 - Disclosure - Collateralized Transactions - Additional Information (Details) Sheet http://www.jefferies.com/role/CollateralizedTransactionsAdditionalInformationDetails Collateralized Transactions - Additional Information (Details) Details 64 false false R65.htm 2430420 - Disclosure - Collateralized Transactions - Summary of Repurchase Agreements and Securities Borrowing and Lending Arrangements (Details) Sheet http://www.jefferies.com/role/CollateralizedTransactionsSummaryofRepurchaseAgreementsandSecuritiesBorrowingandLendingArrangementsDetails Collateralized Transactions - Summary of Repurchase Agreements and Securities Borrowing and Lending Arrangements (Details) Details 65 false false R66.htm 2433421 - Disclosure - Securitization Activities - Activity Related to Securitizations Accounted for as Sales (Details) Sheet http://www.jefferies.com/role/SecuritizationActivitiesActivityRelatedtoSecuritizationsAccountedforasSalesDetails Securitization Activities - Activity Related to Securitizations Accounted for as Sales (Details) Details 66 false false R67.htm 2434422 - Disclosure - Securitization Activities - Summary of Retained Interests in SPEs (Details) Sheet http://www.jefferies.com/role/SecuritizationActivitiesSummaryofRetainedInterestsinSPEsDetails Securitization Activities - Summary of Retained Interests in SPEs (Details) Details 67 false false R68.htm 2437423 - Disclosure - Variable Interest Entities - Assets and Liabilities of Consolidated VIEs Prior to Consolidation (Details) Sheet http://www.jefferies.com/role/VariableInterestEntitiesAssetsandLiabilitiesofConsolidatedVIEsPriortoConsolidationDetails Variable Interest Entities - Assets and Liabilities of Consolidated VIEs Prior to Consolidation (Details) Details 68 false false R69.htm 2438424 - Disclosure - Variable Interest Entities - Variable Interests in Non-Consolidated Variable Interest Entities (Details) Sheet http://www.jefferies.com/role/VariableInterestEntitiesVariableInterestsinNonConsolidatedVariableInterestEntitiesDetails Variable Interest Entities - Variable Interests in Non-Consolidated Variable Interest Entities (Details) Details 69 false false R70.htm 2439425 - Disclosure - Variable Interest Entities - Additional Information (Details) Sheet http://www.jefferies.com/role/VariableInterestEntitiesAdditionalInformationDetails Variable Interest Entities - Additional Information (Details) Details 70 false false R71.htm 2442426 - Disclosure - Investments - Additional Information (Details) Sheet http://www.jefferies.com/role/InvestmentsAdditionalInformationDetails Investments - Additional Information (Details) Details 71 false false R72.htm 2443427 - Disclosure - Investments - Jefferies Finance - Narrative (Details) Sheet http://www.jefferies.com/role/InvestmentsJefferiesFinanceNarrativeDetails Investments - Jefferies Finance - Narrative (Details) Details 72 false false R73.htm 2444428 - Disclosure - Investments - Summary of Selected Financial Information for Jefferies Finance (Details) Sheet http://www.jefferies.com/role/InvestmentsSummaryofSelectedFinancialInformationforJefferiesFinanceDetails Investments - Summary of Selected Financial Information for Jefferies Finance (Details) Details 73 false false R74.htm 2445429 - Disclosure - Investments - Berkadia - Narrative (Details) Sheet http://www.jefferies.com/role/InvestmentsBerkadiaNarrativeDetails Investments - Berkadia - Narrative (Details) Details 74 false false R75.htm 2446430 - Disclosure - Investments - Summary of Selected Financial Information for Berkadia (Details) Sheet http://www.jefferies.com/role/InvestmentsSummaryofSelectedFinancialInformationforBerkadiaDetails Investments - Summary of Selected Financial Information for Berkadia (Details) Details 75 false false R76.htm 2447431 - Disclosure - Investments - JCP Fund V - Narrative (Details) Sheet http://www.jefferies.com/role/InvestmentsJCPFundVNarrativeDetails Investments - JCP Fund V - Narrative (Details) Details 76 false false R77.htm 2448432 - Disclosure - Investments - Summary of Selected Financial Information for JCP Fund V (Details) Sheet http://www.jefferies.com/role/InvestmentsSummaryofSelectedFinancialInformationforJCPFundVDetails Investments - Summary of Selected Financial Information for JCP Fund V (Details) Details 77 false false R78.htm 2449433 - Disclosure - Investments - Asset Management Investments - Narrative (Details) Sheet http://www.jefferies.com/role/InvestmentsAssetManagementInvestmentsNarrativeDetails Investments - Asset Management Investments - Narrative (Details) Details 78 false false R79.htm 2450434 - Disclosure - Investments - ApiJect - Narrative (Details) Sheet http://www.jefferies.com/role/InvestmentsApiJectNarrativeDetails Investments - ApiJect - Narrative (Details) Details 79 false false R80.htm 2453435 - Disclosure - Goodwill and Intangible Assets - Goodwill (Details) Sheet http://www.jefferies.com/role/GoodwillandIntangibleAssetsGoodwillDetails Goodwill and Intangible Assets - Goodwill (Details) Details 80 false false R81.htm 2454436 - Disclosure - Goodwill and Intangible Assets - Summary of Intangible Assets (Details) Sheet http://www.jefferies.com/role/GoodwillandIntangibleAssetsSummaryofIntangibleAssetsDetails Goodwill and Intangible Assets - Summary of Intangible Assets (Details) Details 81 false false R82.htm 2455437 - Disclosure - Goodwill and Intangible Assets - Amortization Expense (Details) Sheet http://www.jefferies.com/role/GoodwillandIntangibleAssetsAmortizationExpenseDetails Goodwill and Intangible Assets - Amortization Expense (Details) Details 82 false false R83.htm 2458438 - Disclosure - Short-Term Borrowings - Schedule of Short-Term Borrowings (Details) Sheet http://www.jefferies.com/role/ShortTermBorrowingsScheduleofShortTermBorrowingsDetails Short-Term Borrowings - Schedule of Short-Term Borrowings (Details) Details 83 false false R84.htm 2459439 - Disclosure - Short-Term Borrowings - Additional Information (Details) Sheet http://www.jefferies.com/role/ShortTermBorrowingsAdditionalInformationDetails Short-Term Borrowings - Additional Information (Details) Details 84 false false R85.htm 2462440 - Disclosure - Long-Term Debt - Summary of Long-Term Debt Carrying Values Including Unamortized Discounts and Premiums (Details) Sheet http://www.jefferies.com/role/LongTermDebtSummaryofLongTermDebtCarryingValuesIncludingUnamortizedDiscountsandPremiumsDetails Long-Term Debt - Summary of Long-Term Debt Carrying Values Including Unamortized Discounts and Premiums (Details) Details 85 false false R86.htm 2463441 - Disclosure - Long-Term Debt - Additional Information (Details) Sheet http://www.jefferies.com/role/LongTermDebtAdditionalInformationDetails Long-Term Debt - Additional Information (Details) Details 86 false false R87.htm 2466442 - Disclosure - Revenues from Contracts with Customers - Components of Revenue (Details) Sheet http://www.jefferies.com/role/RevenuesfromContractswithCustomersComponentsofRevenueDetails Revenues from Contracts with Customers - Components of Revenue (Details) Details 87 false false R88.htm 2467443 - Disclosure - Revenues from Contracts with Customers - Disaggregation of Revenue (Details) Sheet http://www.jefferies.com/role/RevenuesfromContractswithCustomersDisaggregationofRevenueDetails Revenues from Contracts with Customers - Disaggregation of Revenue (Details) Details 88 false false R89.htm 2468444 - Disclosure - Revenues from Contracts with Customers - Additional Information (Details) Sheet http://www.jefferies.com/role/RevenuesfromContractswithCustomersAdditionalInformationDetails Revenues from Contracts with Customers - Additional Information (Details) Details 89 false false R90.htm 2469445 - Disclosure - Revenues from Contracts with Customers - Allowance for Credit Losses (Details) Sheet http://www.jefferies.com/role/RevenuesfromContractswithCustomersAllowanceforCreditLossesDetails Revenues from Contracts with Customers - Allowance for Credit Losses (Details) Details 90 false false R91.htm 2472446 - Disclosure - Compensation Plans - Compensation Cost (Details) Sheet http://www.jefferies.com/role/CompensationPlansCompensationCostDetails Compensation Plans - Compensation Cost (Details) Details 91 false false R92.htm 2473447 - Disclosure - Compensation Plans - Remaining Unamortized Amounts (Details) Sheet http://www.jefferies.com/role/CompensationPlansRemainingUnamortizedAmountsDetails Compensation Plans - Remaining Unamortized Amounts (Details) Details 92 false false R93.htm 2476448 - Disclosure - Income Taxes (Details) Sheet http://www.jefferies.com/role/IncomeTaxesDetails Income Taxes (Details) Details http://www.jefferies.com/role/IncomeTaxesTables 93 false false R94.htm 2479449 - Disclosure - Commitments, Contingencies and Guarantees - Commitments (Details) Sheet http://www.jefferies.com/role/CommitmentsContingenciesandGuaranteesCommitmentsDetails Commitments, Contingencies and Guarantees - Commitments (Details) Details 94 false false R95.htm 2480450 - Disclosure - Commitments, Contingencies and Guarantees - Additional Information (Details) Sheet http://www.jefferies.com/role/CommitmentsContingenciesandGuaranteesAdditionalInformationDetails Commitments, Contingencies and Guarantees - Additional Information (Details) Details 95 false false R96.htm 2481451 - Disclosure - Commitments, Contingencies and Guarantees - Guarantees (Details) Sheet http://www.jefferies.com/role/CommitmentsContingenciesandGuaranteesGuaranteesDetails Commitments, Contingencies and Guarantees - Guarantees (Details) Details 96 false false R97.htm 2484452 - Disclosure - Net Capital Requirements (Details) Sheet http://www.jefferies.com/role/NetCapitalRequirementsDetails Net Capital Requirements (Details) Details http://www.jefferies.com/role/NetCapitalRequirementsTables 97 false false R98.htm 2487453 - Disclosure - Segment Reporting - Additional Information (Details) Sheet http://www.jefferies.com/role/SegmentReportingAdditionalInformationDetails Segment Reporting - Additional Information (Details) Details 98 false false R99.htm 2488454 - Disclosure - Segment Reporting - Net Revenues, Expenses and Total Assets by Segment (Details) Sheet http://www.jefferies.com/role/SegmentReportingNetRevenuesExpensesandTotalAssetsbySegmentDetails Segment Reporting - Net Revenues, Expenses and Total Assets by Segment (Details) Details 99 false false R100.htm 2489455 - Disclosure - Segment Reporting - Net Revenues by Geographic Region (Details) Sheet http://www.jefferies.com/role/SegmentReportingNetRevenuesbyGeographicRegionDetails Segment Reporting - Net Revenues by Geographic Region (Details) Details 100 false false R101.htm 2492456 - Disclosure - Related Party Transactions - Officers, Directors and Employees (Details) Sheet http://www.jefferies.com/role/RelatedPartyTransactionsOfficersDirectorsandEmployeesDetails Related Party Transactions - Officers, Directors and Employees (Details) Details 101 false false R102.htm 2493457 - Disclosure - Related Party Transactions - Jefferies (Details) Sheet http://www.jefferies.com/role/RelatedPartyTransactionsJefferiesDetails Related Party Transactions - Jefferies (Details) Details 102 false false R9999.htm Uncategorized Items - jef-20220531.htm Sheet http://xbrl.sec.gov/role/uncategorizedFacts Uncategorized Items - jef-20220531.htm Cover 103 false false All Reports Book All Reports jef-20220531.htm exhibit3115312022.htm exhibit3125312022.htm exhibit3215312022.htm exhibit3225312022.htm jef-20220531.xsd jef-20220531_cal.xml jef-20220531_def.xml jef-20220531_lab.xml jef-20220531_pre.xml jef-20220531_g1.jpg jef-20220531_g2.jpg http://fasb.org/srt/2022 http://fasb.org/us-gaap/2022 http://xbrl.sec.gov/dei/2022 true true