$JEF
Jefferies Financial Group Inc. Stock $jef

$jef Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-Q Financial Statement

#000009622321000020 Filed on April 08, 2021

Income Statement

Concept	2021 Q1	2020 Q1
Revenue	$2.704B	$1.692B
YoY Change	59.76%	41.61%
Cost Of Revenue	$95.56M	$72.44M
YoY Change	31.91%	8.25%
Gross Profit	$2.608B	$1.620B
YoY Change	61.01%	43.59%
Gross Profit Margin	96.47%	95.72%
Selling, General & Admin	$1.445B	$968.0M
YoY Change	49.23%	53.48%
% of Gross Profit	55.39%	59.76%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$38.77M	$39.47M
YoY Change	-1.78%	16.31%
% of Gross Profit	1.49%	2.44%
Operating Expenses	$1.483B	$1.007B
YoY Change	47.23%	51.58%
Operating Profit	$1.125B	$612.4M
YoY Change	83.67%	32.13%
Interest Expense	$20.37M	$21.55M
YoY Change	-5.51%	-6.36%
% of Operating Profit	1.81%	3.52%
Other Income/Expense, Net
YoY Change
Pretax Income	$800.8M	$157.8M
YoY Change	407.49%	219.96%
Income Tax	$218.2M	$45.80M
% Of Pretax Income	27.25%	29.03%
Net Earnings	$582.5M	$113.0M
YoY Change	415.48%	152.19%
Net Earnings / Revenue	21.55%	6.68%
Basic Earnings Per Share	$2.17	$0.37
Diluted Earnings Per Share	$2.13	$0.37
COMMON SHARES
Basic Shares Outstanding	266.4M shares	302.4M shares
Diluted Shares Outstanding	272.9M shares	308.3M shares

Balance Sheet

Concept	2021 Q1	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$8.649B	$6.711B
YoY Change	28.88%	21.64%
Cash & Equivalents	$8.649B	$6.711B
Short-Term Investments
Other Short-Term Assets	$615.0M
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$16.52B	$13.95B
YoY Change	18.47%	9.41%
LONG-TERM ASSETS
Property, Plant & Equipment	$896.0M	$929.0M
YoY Change	-3.55%
Goodwill	$1.750B	$1.739B
YoY Change	0.62%	2.01%
Intangibles	$164.3M	$178.8M
YoY Change	-8.1%	-3.8%
Long-Term Investments	$1.689B	$1.563B
YoY Change	8.09%	-34.37%
Other Assets	$615.0M	$742.0M
YoY Change	-17.12%	-41.25%
Total Long-Term Assets	$40.35B	$37.83B
YoY Change	6.65%	4.47%
TOTAL ASSETS
Total Short-Term Assets	$16.52B	$13.95B
Total Long-Term Assets	$40.35B	$37.83B
Total Assets	$56.87B	$51.78B
YoY Change	9.83%	5.76%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$10.62B	$9.447B
YoY Change	12.45%	29.52%
Accrued Expenses	$580.0M	$607.0M
YoY Change	-4.45%
Deferred Revenue
YoY Change
Short-Term Debt	$882.9M	$623.2M
YoY Change	41.69%	17.47%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$21.81B	$20.99B
YoY Change	3.92%	8.39%
LONG-TERM LIABILITIES
Long-Term Debt	$12.88B	$11.50B
YoY Change	11.99%	23.13%
Other Long-Term Liabilities	$12.37B	$9.879B
YoY Change	25.22%	-3.88%
Total Long-Term Liabilities	$25.25B	$21.38B
YoY Change	18.1%	8.98%
TOTAL LIABILITIES
Total Short-Term Liabilities	$21.81B	$20.99B
Total Long-Term Liabilities	$25.25B	$21.38B
Total Liabilities	$46.93B	$42.24B
YoY Change	11.11%	8.71%
SHAREHOLDERS EQUITY
Retained Earnings	$7.041B	$6.001B
YoY Change	17.35%	6.87%
Common Stock	$3.051B	$3.607B
YoY Change	-15.41%	-9.36%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares	69.76M shares	39.35M shares
Shareholders Equity	$9.746B	$9.349B
YoY Change
Total Liabilities & Shareholders Equity	$56.87B	$51.78B
YoY Change	9.83%	5.76%

Cashflow Statement

Concept	2021 Q1	2020 Q1
OPERATING ACTIVITIES
Net Income	$582.5M	$113.0M
YoY Change	415.48%	152.19%
Depreciation, Depletion And Amortization	$38.77M	$39.47M
YoY Change	-1.78%	16.31%
Cash From Operating Activities	-$1.496B	-$918.1M
YoY Change	62.94%	17.11%
INVESTING ACTIVITIES
Capital Expenditures	-$24.20M	-$61.00M
YoY Change	-60.33%	32.32%
Acquisitions
YoY Change
Other Investing Activities	$476.0K	-$2.560M
YoY Change	-118.59%
Cash From Investing Activities	-$32.34M	-$49.31M
YoY Change	-34.41%	-104.59%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$130.1M	$310.2M
YoY Change	-58.06%	44.5%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$1.070B	-$316.2M
YoY Change	-438.32%	724.7%
NET CHANGE
Cash From Operating Activities	-$1.496B	-$918.1M
Cash From Investing Activities	-$32.34M	-$49.31M
Cash From Financing Activities	$1.070B	-$316.2M
Net Change In Cash	-$454.7M	-$1.286B
YoY Change	-64.65%	-584.09%
FREE CASH FLOW
Cash From Operating Activities	-$1.496B	-$918.1M
Capital Expenditures	-$24.20M	-$61.00M
Free Cash Flow	-$1.472B	-$857.1M
YoY Change	71.71%	16.16%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000096223
CY2021Q1	dei	Amendment Flag AmendmentFlag	false
CY2021Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--11-30
CY2021Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2021Q1	jef	Repos Obligation Settlement Period ReposObligationSettlementPeriod	P3D
CY2021Q1	dei	Document Type DocumentType	10-Q
CY2021Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2021Q1	dei	Document Period End Date DocumentPeriodEndDate	2021-02-28
CY2021Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2021Q1	dei	Entity File Number EntityFileNumber	1-5721
CY2021Q1	dei	Entity Registrant Name EntityRegistrantName	JEFFERIES FINANCIAL GROUP INC.
CY2021Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NY
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	249751000	USD
CY2021Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2804243000	USD
CY2020Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2911223000	USD
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-346544000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-288917000	USD
CY2021Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7041460000	USD
CY2020Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6531836000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	9745862000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	9403893000	USD
CY2021Q1	us-gaap	Minority Interest MinorityInterest	32496000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	34632000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9778358000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9438525000	USD
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	56868919000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	53118352000	USD
CY2021Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-2615557
CY2021Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	520 Madison Avenue
CY2021Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	New York,
CY2021Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	NY
CY2021Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	10022
CY2021Q1	dei	City Area Code CityAreaCode	212
CY2021Q1	dei	Local Phone Number LocalPhoneNumber	460-1900
CY2021Q1	dei	Security12b Title Security12bTitle	Common Shares, par value $1 per share
CY2021Q1	dei	Trading Symbol TradingSymbol	JEF
CY2021Q1	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2021Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q1	dei	Entity Shell Company EntityShellCompany	false
CY2021Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	246972393	shares
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8648961000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9055148000	USD
CY2021Q1	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	615115000	USD
CY2020Q4	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	604321000	USD
CY2021Q1	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	12150880000	USD
CY2020Q4	us-gaap	Pledged Financial Instruments Not Separately Reported Securities Pledged PledgedFinancialInstrumentsNotSeparatelyReportedSecuritiesPledged	13065585000	USD
CY2021Q1	us-gaap	Financial Instruments Owned At Fair Value FinancialInstrumentsOwnedAtFairValue	19097153000	USD
CY2020Q4	us-gaap	Financial Instruments Owned At Fair Value FinancialInstrumentsOwnedAtFairValue	18124577000	USD
CY2021Q1	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1689048000	USD
CY2020Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1686563000	USD
CY2021Q1	us-gaap	Securities Borrowed SecuritiesBorrowed	7150657000	USD
CY2020Q4	us-gaap	Securities Borrowed SecuritiesBorrowed	6934762000	USD
CY2021Q1	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	6680284000	USD
CY2020Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	5096769000	USD
CY2021Q1	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	0	USD
CY2020Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	7517000	USD
CY2021Q1	jef	Receivables Receivables	7870542000	USD
CY2020Q4	jef	Receivables Receivables	6608767000	USD
CY2021Q1	jef	Property Plant And Equipment And Operating Lease Rightof Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndOperatingLeaseRightofUseAssetAfterAccumulatedDepreciationAndAmortization	896317000	USD
CY2020Q4	jef	Property Plant And Equipment And Operating Lease Rightof Use Asset After Accumulated Depreciation And Amortization PropertyPlantAndEquipmentAndOperatingLeaseRightofUseAssetAfterAccumulatedDepreciationAndAmortization	897204000	USD
CY2021Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1914322000	USD
CY2020Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1913467000	USD
CY2021Q1	us-gaap	Other Assets OtherAssets	2306520000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	2189257000	USD
CY2021Q1	us-gaap	Assets Assets	56868919000	USD
CY2020Q4	us-gaap	Assets Assets	53118352000	USD
CY2021Q1	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	882941000	USD
CY2020Q4	us-gaap	Other Short Term Borrowings OtherShortTermBorrowings	764715000	USD
CY2021Q1	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	12370254000	USD
CY2020Q4	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	10017600000	USD
CY2021Q1	us-gaap	Securities Loaned SecuritiesLoaned	2519077000	USD
CY2020Q4	us-gaap	Securities Loaned SecuritiesLoaned	1810748000	USD
CY2021Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	7207636000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8316269000	USD
CY2021Q1	us-gaap	Other Secured Financings OtherSecuredFinancings	4508425000	USD
CY2020Q4	us-gaap	Other Secured Financings OtherSecuredFinancings	3288384000	USD
CY2021Q1	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	0	USD
CY2020Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	7517000	USD
CY2021Q1	jef	Operating Lease And Finance Lease Liability OperatingLeaseAndFinanceLeaseLiability	580129000	USD
CY2020Q4	jef	Operating Lease And Finance Lease Liability OperatingLeaseAndFinanceLeaseLiability	584807000	USD
CY2021Q1	jef	Payables Expense Accruals And Other Liabilities PayablesExpenseAccrualsAndOtherLiabilities	10622970000	USD
CY2020Q4	jef	Payables Expense Accruals And Other Liabilities PayablesExpenseAccrualsAndOtherLiabilities	10388072000	USD
CY2021Q1	us-gaap	Long Term Debt LongTermDebt	8243150000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	8352039000	USD
CY2021Q1	us-gaap	Liabilities Liabilities	46934582000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	43530151000	USD
CY2021Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2021Q1	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	30979000	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	24676000	USD
CY2021Q1	jef	Mandatorily Redeemable Convertible Preferred Shares MandatorilyRedeemableConvertiblePreferredShares	125000000	USD
CY2020Q4	jef	Mandatorily Redeemable Convertible Preferred Shares MandatorilyRedeemableConvertiblePreferredShares	125000000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2021Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2021Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	600000000	shares
CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	246703277	shares
CY2021Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	246703277	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	249750542	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	249750542	shares
CY2021Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	69759335	shares
CY2020Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	66712070	shares
CY2021Q1	us-gaap	Common Stock Value CommonStockValue	246703000	USD
CY2021Q1	us-gaap	Revenues Revenues	2703588000	USD
CY2020Q1	us-gaap	Revenues Revenues	1692264000	USD
CY2021Q1	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	2486942000	USD
CY2020Q1	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1386328000	USD
CY2021Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1172543000	USD
CY2020Q1	us-gaap	Labor And Related Expense LaborAndRelatedExpense	670193000	USD
CY2021Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	95559000	USD
CY2020Q1	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	72443000	USD
CY2021Q1	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	76416000	USD
CY2020Q1	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	59181000	USD
CY2021Q1	us-gaap	Interest Expense InterestExpense	20367000	USD
CY2020Q1	us-gaap	Interest Expense InterestExpense	21554000	USD
CY2021Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	38767000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	39470000	USD
CY2021Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	271937000	USD
CY2020Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	297838000	USD
CY2021Q1	us-gaap	Costs And Expenses CostsAndExpenses	1675589000	USD
CY2020Q1	us-gaap	Costs And Expenses CostsAndExpenses	1160679000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	811353000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	225649000	USD
CY2021Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-10568000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-67855000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	800785000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	157794000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	218236000	USD
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45773000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	582549000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	112021000	USD
CY2021Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-743000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2129000	USD
CY2021Q1	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-769000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-282000	USD
CY2021Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1626000	USD
CY2020Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1422000	USD
CY2021Q1	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	582435000	USD
CY2020Q1	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	113010000	USD
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.17
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.37
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.13
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.37
CY2021Q1	us-gaap	Profit Loss ProfitLoss	582549000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	112021000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-19000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	81000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-60000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	237000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	-19000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	81000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-60000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	237000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	3253000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	-3147000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	11083000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-9233000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationTax	0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	3253000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	-3147000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	11083000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-9233000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	-22182000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodTax	7939000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-69214000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	23248000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionTax	71000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionTax	86000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	222000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	252000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Reclassification Adjustment Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterReclassificationAdjustmentTax	-22253000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Reclassification Adjustment Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterReclassificationAdjustmentTax	7853000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	-69436000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	22996000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Before Reclassification Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax	0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	261000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax	224000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	786000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	639000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-261000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-224000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-786000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-639000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-57627000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	14639000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	524922000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	126660000	USD
CY2021Q1	jef	Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest Excluding Redeemable Noncontrolling Interest ComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterestExcludingRedeemableNoncontrollingInterest	-743000	USD
CY2020Q1	jef	Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest Excluding Redeemable Noncontrolling Interest ComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterestExcludingRedeemableNoncontrollingInterest	-2129000	USD
CY2021Q1	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	-769000	USD
CY2020Q1	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	-282000	USD
CY2021Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1626000	USD
CY2020Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1422000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	524808000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	127649000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	582549000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	112021000	USD
CY2021Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	9149000	USD
CY2020Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	12237000	USD
CY2021Q1	jef	Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements	36012000	USD
CY2020Q1	jef	Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements	36415000	USD
CY2021Q1	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	6321000	USD
CY2020Q1	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	2971000	USD
CY2021Q1	us-gaap	Share Based Compensation ShareBasedCompensation	20678000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	9947000	USD
CY2021Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3267000	USD
CY2020Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	10870000	USD
CY2021Q1	jef	Income Losses Relatedto Associated Companies Including Income Losses Relatedto Subsidiary Associated Companies Primarily Classifiedas Revenues IncomeLossesRelatedtoAssociatedCompaniesIncludingIncomeLossesRelatedtoSubsidiaryAssociatedCompaniesPrimarilyClassifiedasRevenues	77338000	USD
CY2020Q1	jef	Income Losses Relatedto Associated Companies Including Income Losses Relatedto Subsidiary Associated Companies Primarily Classifiedas Revenues IncomeLossesRelatedtoAssociatedCompaniesIncludingIncomeLossesRelatedtoSubsidiaryAssociatedCompaniesPrimarilyClassifiedasRevenues	-39096000	USD
CY2021Q1	jef	Dividends Or Distributions From Associated Companies DividendsOrDistributionsFromAssociatedCompanies	19345000	USD
CY2020Q1	jef	Dividends Or Distributions From Associated Companies DividendsOrDistributionsFromAssociatedCompanies	49646000	USD
CY2021Q1	jef	Netgainslossesrelatedtopropertyandequipmentandotherassets Netgainslossesrelatedtopropertyandequipmentandotherassets	-165000	USD
CY2020Q1	jef	Netgainslossesrelatedtopropertyandequipmentandotherassets Netgainslossesrelatedtopropertyandequipmentandotherassets	-34193000	USD
CY2021Q1	jef	Increase Decreasein Securities Depositedwith Clearingand Depository Organizations IncreaseDecreaseinSecuritiesDepositedwithClearingandDepositoryOrganizations	84307000	USD
CY2020Q1	jef	Increase Decreasein Securities Depositedwith Clearingand Depository Organizations IncreaseDecreaseinSecuritiesDepositedwithClearingandDepositoryOrganizations	296514000	USD
CY2021Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	957696000	USD
CY2020Q1	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	1526004000	USD
CY2021Q1	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	211177000	USD
CY2020Q1	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	-910494000	USD
CY2021Q1	jef	Increase Decrease In Securities Purchased Under Agreements To Resell IncreaseDecreaseInSecuritiesPurchasedUnderAgreementsToResell	1576329000	USD
CY2020Q1	jef	Increase Decrease In Securities Purchased Under Agreements To Resell IncreaseDecreaseInSecuritiesPurchasedUnderAgreementsToResell	614635000	USD
CY2021Q1	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	581609000	USD
CY2020Q1	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	1433478000	USD
CY2021Q1	jef	Increase Decrease Receivables From Customers Of Securities Operations IncreaseDecreaseReceivablesFromCustomersOfSecuritiesOperations	575823000	USD
CY2020Q1	jef	Increase Decrease Receivables From Customers Of Securities Operations IncreaseDecreaseReceivablesFromCustomersOfSecuritiesOperations	48710000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	101570000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	28454000	USD
CY2021Q1	jef	Increase Decrease In Other Assets IncreaseDecreaseInOtherAssets	45883000	USD
CY2020Q1	jef	Increase Decrease In Other Assets IncreaseDecreaseInOtherAssets	231104000	USD
CY2021Q1	us-gaap	Increase Decrease In Trading Liabilities IncreaseDecreaseInTradingLiabilities	2339208000	USD
CY2020Q1	us-gaap	Increase Decrease In Trading Liabilities IncreaseDecreaseInTradingLiabilities	-635893000	USD
CY2021Q1	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	704075000	USD
CY2020Q1	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	371286000	USD
CY2021Q1	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	-1114857000	USD
CY2020Q1	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	909654000	USD
CY2021Q1	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	768358000	USD
CY2020Q1	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	1569726000	USD
CY2021Q1	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	-161557000	USD
CY2020Q1	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	-51154000	USD
CY2021Q1	jef	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-12811000	USD
CY2020Q1	jef	Increase Decrease In Operating Lease Liabilities IncreaseDecreaseInOperatingLeaseLiabilities	-17959000	USD
CY2021Q1	jef	Increase Decreasein Trade Payables Expense Accrualsand Other Liabilities IncreaseDecreaseinTradePayablesExpenseAccrualsandOtherLiabilities	-387334000	USD
CY2020Q1	jef	Increase Decreasein Trade Payables Expense Accrualsand Other Liabilities IncreaseDecreaseinTradePayablesExpenseAccrualsandOtherLiabilities	-199966000	USD
CY2021Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	96774000	USD
CY2020Q1	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-97232000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1495938000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-918083000	USD
CY2021Q1	jef	Payments To Acquire Property Plant And Equipment And Other Assets PaymentsToAcquirePropertyPlantAndEquipmentAndOtherAssets	24243000	USD
CY2020Q1	jef	Payments To Acquire Property Plant And Equipment And Other Assets PaymentsToAcquirePropertyPlantAndEquipmentAndOtherAssets	60982000	USD
CY2021Q1	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	137527000	USD
CY2020Q1	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	239241000	USD
CY2021Q1	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	74573000	USD
CY2020Q1	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-34518000	USD
CY2020Q1	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	229476000	USD
CY2021Q1	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	914484000	USD
CY2020Q1	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	864422000	USD
CY2021Q1	jef	Capitaldistributionsandloanrepaymentsfromassociatedcompanies Capitaldistributionsandloanrepaymentsfromassociatedcompanies	969817000	USD
CY2020Q1	jef	Capitaldistributionsandloanrepaymentsfromassociatedcompanies Capitaldistributionsandloanrepaymentsfromassociatedcompanies	883299000	USD
CY2021Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	476000	USD
CY2020Q1	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-2560000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-32340000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-49310000	USD
CY2021Q1	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	431811000	USD
CY2020Q1	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	759478000	USD
CY2021Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	396556000	USD
CY2020Q1	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	555076000	USD
CY2021Q1	jef	Netchangeinothersecuredfinancings Netchangeinothersecuredfinancings	1219585000	USD
CY2020Q1	jef	Netchangeinothersecuredfinancings Netchangeinothersecuredfinancings	-150485000	USD
CY2021Q1	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-4706000	USD
CY2021Q1	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	80000	USD
CY2020Q1	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	17100000	USD
CY2021Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	130097000	USD
CY2020Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	310187000	USD
CY2021Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	49768000	USD
CY2020Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	42793000	USD
CY2021Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-696000	USD
CY2020Q1	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	316000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1069653000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-316165000	USD
CY2021Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3886000	USD
CY2020Q1	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-2927000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-454739000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1286485000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9664972000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8480435000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9210233000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	7193950000	USD
CY2021Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8648961000	USD
CY2020Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6710659000	USD
CY2021Q1	jef	Cash And Securities Segregated And On Deposit For Regulatory Purposes Or Deposited With Clearing And Depository Organizations CashAndSecuritiesSegregatedAndOnDepositForRegulatoryPurposesOrDepositedWithClearingAndDepositoryOrganizations	496571000	USD
CY2020Q1	jef	Cash And Securities Segregated And On Deposit For Regulatory Purposes Or Deposited With Clearing And Depository Organizations CashAndSecuritiesSegregatedAndOnDepositForRegulatoryPurposesOrDepositedWithClearingAndDepositoryOrganizations	410632000	USD
CY2021Q1	jef	Restricted Cash Other Assets RestrictedCashOtherAssets	64701000	USD
CY2020Q1	jef	Restricted Cash Other Assets RestrictedCashOtherAssets	72659000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9210233000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	7193950000	USD
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2021Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9438525000	USD
CY2021Q1	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	582435000	USD
CY2021Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-743000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-57627000	USD
CY2021Q1	jef	Noncontrolling Interest Increase From Contributions From Noncontrolling Interests NoncontrollingInterestIncreaseFromContributionsFromNoncontrollingInterests	80000	USD
CY2021Q1	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1473000	USD
CY2021Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	20678000	USD
CY2021Q1	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	-7058000	USD
CY2021Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	130097000	USD
CY2021Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.20
CY2021Q1	us-gaap	Dividends Common Stock DividendsCommonStock	52896000	USD
CY2021Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	-6449000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9778358000	USD
CY2020Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9601684000	USD
CY2020Q1	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	113010000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2129000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	14639000	USD
CY2020Q1	jef	Noncontrolling Interest Increase From Contributions From Noncontrolling Interests NoncontrollingInterestIncreaseFromContributionsFromNoncontrollingInterests	17100000	USD
CY2020Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9947000	USD
CY2020Q1	us-gaap	Minority Interest Change In Redemption Value MinorityInterestChangeInRedemptionValue	1564000	USD
CY2020Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	327501000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.15
CY2020Q1	us-gaap	Dividends Common Stock DividendsCommonStock	45786000	USD
CY2020Q1	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3377000	USD
CY2020Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9385905000	USD
CY2021Q1	us-gaap	Nature Of Operations NatureOfOperations	Nature of Operations<div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Jefferies Financial Group Inc. ("Jefferies," "we," "our" or the "Company") is engaged in investment banking and capital markets, asset management and direct investing. Jefferies Group LLC ("Jefferies Group"), our largest subsidiary, was established in 1962 and is now the largest independent U.S.-headquartered global full-service integrated investment banking and securities firm. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Jefferies Group operates in two business segments: Investment Banking and Capital Markets, and Asset Management. Investment Banking and Capital Markets includes investment banking, capital markets and other related services. Investment banking provides underwriting and financial advisory services to clients across most industry sectors in the Americas, Europe and Asia. Capital markets businesses operate across the spectrum of equities and fixed income products.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our Asset Management segment comprises all asset management operations, including those within Jefferies Group. Within Asset Management, we manage, invest in and provide services to a diverse group of alternative asset management platforms across a spectrum of investment strategies and asset classes. Asset Management offers institutional clients an innovative range of investment strategies through its affiliated managers.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Merchant Banking is where we own a portfolio of businesses and investments, including Linkem (fixed wireless broadband services in Italy); Vitesse Energy, LLC ("Vitesse Energy Finance") and JETX Energy, LLC ("JETX Energy") (oil and gas production and development); real estate, primarily HomeFed LLC ("HomeFed"); Idaho Timber (manufacturing); and FXCM Group, LLC ("FXCM") (provider of online foreign exchange trading services). The structure of each of our investments was tailored to the unique opportunity each transaction presented. Our investments may be reflected in our consolidated results as consolidated subsidiaries, equity investments, securities or in other ways, depending on the structure of our specific holdings.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">We own approximately 42% of the common shares of Linkem, as well as convertible preferred shares and warrants. If all of our convertible preferred stock was converted and warrants were exercised, it would increase our ownership to approximately 56% of Linkem's common equity at February 28, 2021. Linkem provides residential broadband services in Italy using LTE technologies deployed over the 3.5 GHz spectrum band. Linkem deployed its first 5G towers in late 2020 and plans to rapidly increase its network coverage and service offerings over the coming years as it upgrades to 5G, adds subscribers and leverages its assets. Linkem is accounted for under the equity method. </span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Vitesse Energy Finance is our 97% owned consolidated subsidiary that acquires, invests and monetizes non-operated working interests and royalties predominantly in the Bakken Shale of the Williston Basin in North Dakota. JETX Energy is our 98% owned consolidated subsidiary that currently has non-operated working interests and acreage in east Texas.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">HomeFed is our 100% owned consolidated subsidiary that owns and develops residential and mixed-use real estate properties.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Idaho Timber is our 100% owned consolidated subsidiary engaged in the manufacture and distribution of various wood products.</span></div><div style="text-align:justify"><span><br/></span></div><div style="text-align:justify"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Our investment in FXCM and associated companies consists of a senior secured term loan due February 15, 2022 ($71.6 million principal outstanding at February 28, 2021), a 50% voting interest in FXCM and rights to a majority of all distributions in respect of the equity of FXCM.</span></div>
CY2021Q1	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	4750700000	USD
CY2020Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	4161800000	USD
CY2021Q1	us-gaap	Receivables From Customers ReceivablesFromCustomers	1863500000	USD
CY2020Q4	us-gaap	Receivables From Customers ReceivablesFromCustomers	1286900000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	53926000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	34018000	USD
CY2021Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	3267000	USD
CY2020Q1	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	10870000	USD
CY2021Q1	jef	Accounts Receivable Allowance For Credit Loss Writeoff Net Of Recoveries AccountsReceivableAllowanceForCreditLossWriteoffNetOfRecoveries	7320000	USD
CY2020Q1	jef	Accounts Receivable Allowance For Credit Loss Writeoff Net Of Recoveries AccountsReceivableAllowanceForCreditLossWriteoffNetOfRecoveries	10850000	USD
CY2021Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	76392000	USD
CY2020Q1	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	34038000	USD
CY2021Q1	jef	Other Investments Carrying Value OtherInvestmentsCarryingValue	77300000	USD
CY2020Q4	jef	Other Investments Carrying Value OtherInvestmentsCarryingValue	90200000	USD
CY2020Q1	us-gaap	Impairment Of Investments ImpairmentOfInvestments	20000000.0	USD
CY2021Q1	us-gaap	Impairment Of Investments ImpairmentOfInvestments	0	USD
CY2021Q1	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1900000	USD
CY2020Q1	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2300000	USD
CY2021Q1	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	4098800000	USD
CY2020Q4	srt	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	3325800000	USD
CY2021Q1	srt	Payables To Customers PayablesToCustomers	4090000000.0	USD
CY2020Q4	srt	Payables To Customers PayablesToCustomers	4249700000	USD
CY2021Q1	us-gaap	Interest Paid Net InterestPaidNet	242027000	USD
CY2020Q1	us-gaap	Interest Paid Net InterestPaidNet	365842000	USD
CY2021Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	20350000	USD
CY2020Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-10697000	USD
CY2020Q1	jef	Non Cash Financing Purchase Of Common Shares For Treasury Settled After Current Period End Date NonCashFinancingPurchaseOfCommonSharesForTreasurySettledAfterCurrentPeriodEndDate	18500000	USD
CY2021Q1	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2604607000	USD
CY2021Q1	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2604607000	USD
CY2021Q1	jef	Financial Instruments Owned At Fair Value Excluding Investments At Fair Value Based On Nav FinancialInstrumentsOwnedAtFairValueExcludingInvestmentsAtFairValueBasedOnNAV	18070709000	USD
CY2021Q1	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	39397000	USD
CY2021Q1	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2997103000	USD
CY2021Q1	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2997103000	USD
CY2021Q1	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	12370254000	USD
CY2021Q1	jef	Other Secured Financings Fair Value OtherSecuredFinancingsFairValue	2168000	USD
CY2021Q1	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1784157000	USD
CY2020Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	1556136000	USD
CY2020Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	1556136000	USD
CY2020Q4	jef	Financial Instruments Owned At Fair Value Excluding Investments At Fair Value Based On Nav FinancialInstrumentsOwnedAtFairValueExcludingInvestmentsAtFairValueBasedOnNAV	17159193000	USD
CY2020Q4	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	48788000	USD
CY2020Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	7517000	USD
CY2020Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	1798659000	USD
CY2020Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	1798659000	USD
CY2020Q4	us-gaap	Financial Instruments Sold Not Yet Purchased At Fair Value FinancialInstrumentsSoldNotYetPurchasedAtFairValue	10017600000	USD
CY2020Q4	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	5067000	USD
CY2020Q4	jef	Other Secured Financings Fair Value OtherSecuredFinancingsFairValue	1543000	USD
CY2020Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1712245000	USD
CY2020Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	7517000	USD
CY2021Q1	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	33900000	USD
CY2020Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	17408000	USD
CY2020	jef	Notice Period Redemption Of Investments Prior Written Notice Period NoticePeriodRedemptionOfInvestmentsPriorWrittenNoticePeriod	P90D
CY2021Q1	jef	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Comprehensive Income FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherComprehensiveIncome	-40900000	USD
CY2021Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	75800000	USD
CY2021Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	68900000	USD
CY2021Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	236700000	USD
CY2021Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	13300000	USD
CY2021Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	102200000	USD
CY2021Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	-72100000	USD
CY2020Q1	jef	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Comprehensive Income FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherComprehensiveIncome	14600000	USD
CY2020Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	85300000	USD
CY2020Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	16800000	USD
CY2020Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	102500000	USD
CY2020Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	107400000	USD
CY2020Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-42800000	USD
CY2020Q1	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	26400000	USD
CY2021Q1	jef	Excluded Securities From Unobservable Quantitative Information Assets ExcludedSecuritiesFromUnobservableQuantitativeInformationAssets	202300000	USD
CY2020Q4	jef	Excluded Securities From Unobservable Quantitative Information Assets ExcludedSecuritiesFromUnobservableQuantitativeInformationAssets	192000000.0	USD
CY2020Q4	jef	Excluded Securitiesfrom Unobservable Quantitative Information Liabilities ExcludedSecuritiesfromUnobservableQuantitativeInformationLiabilities	800000	USD
CY2021Q1	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	10696000	USD
CY2020Q1	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	1739000	USD
CY2021Q1	jef	Fair Value Option Credit Risk Gains Losses On Loans FairValueOptionCreditRiskGainsLossesOnLoans	0	USD
CY2020Q1	jef	Fair Value Option Credit Risk Gains Losses On Loans FairValueOptionCreditRiskGainsLossesOnLoans	-610000	USD
CY2021Q1	jef	Fair Value Option Credit Risk Gains Losseson Loan Commitments FairValueOptionCreditRiskGainsLossesonLoanCommitments	0	USD
CY2020Q1	jef	Fair Value Option Credit Risk Gains Losseson Loan Commitments FairValueOptionCreditRiskGainsLossesonLoanCommitments	-661000	USD
CY2021Q1	us-gaap	Fair Value Option Aggregate Differences Loans And Long Term Receivables FairValueOptionAggregateDifferencesLoansAndLongTermReceivables	5826957000	USD
CY2020Q4	us-gaap	Fair Value Option Aggregate Differences Loans And Long Term Receivables FairValueOptionAggregateDifferencesLoansAndLongTermReceivables	1662647000	USD
CY2021Q1	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due Aggregated Difference FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDueAggregatedDifference	252790000	USD
CY2020Q4	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due Aggregated Difference FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDueAggregatedDifference	287889000	USD
CY2021Q1	jef	Fair Value Option Aggregate Differences Longterm Debt And Shortterm Borrowing FairValueOptionAggregateDifferencesLongtermDebtAndShorttermBorrowing	-53138000	USD
CY2020Q4	jef	Fair Value Option Aggregate Differences Longterm Debt And Shortterm Borrowing FairValueOptionAggregateDifferencesLongtermDebtAndShorttermBorrowing	-42819000	USD
CY2021Q1	jef	Fair Value Option Aggregate Differences Other Secured Financings FairValueOptionAggregateDifferencesOtherSecuredFinancings	2782000	USD
CY2020Q4	jef	Fair Value Option Aggregate Differences Other Secured Financings FairValueOptionAggregateDifferencesOtherSecuredFinancings	2782000	USD
CY2021Q1	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due Aggregate Difference FairValueOptionLoansHeldAsAssets90DaysOrMorePastDueAggregateDifference	30200000	USD
CY2020Q4	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due Aggregate Difference FairValueOptionLoansHeldAsAssets90DaysOrMorePastDueAggregateDifference	30000000.0	USD
CY2021Q1	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDue	5400000	USD
CY2020Q4	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDue	69700000	USD
CY2021Q1	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue	4100000	USD
CY2020Q4	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue	3800000	USD
CY2021Q1	us-gaap	Derivative Assets DerivativeAssets	529923000	USD
CY2021Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	1093650000	USD
CY2020Q4	us-gaap	Derivative Assets DerivativeAssets	481007000	USD
CY2021Q1	jef	Otc Derivative Liabilities Having Maturity Period Of Greater Than Five Years OtcDerivativeLiabilitiesHavingMaturityPeriodOfGreaterThanFiveYears	259591000	USD
CY2021Q1	jef	Otc Derivative Liabilities Cross Maturity Netting OtcDerivativeLiabilitiesCrossMaturityNetting	59603000	USD
CY2020Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	641143000	USD
CY2021Q1	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	3020000	USD
CY2020Q1	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	-402000	USD
CY2021Q1	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-102520000	USD
CY2020Q1	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	151901000	USD
CY2021Q1	jef	Otc Derivative Assets Having Maturity Period Of Zero To Twelve Months OtcDerivativeAssetsHavingMaturityPeriodOfZeroToTwelveMonths	410215000	USD
CY2021Q1	jef	Otc Derivative Assets Having Maturity Period Of One To Five Years OtcDerivativeAssetsHavingMaturityPeriodOfOneToFiveYears	170559000	USD
CY2021Q1	jef	Otc Derivative Assets Having Maturity Period Of Greater Than Five Years OtcDerivativeAssetsHavingMaturityPeriodOfGreaterThanFiveYears	167823000	USD
CY2021Q1	jef	Otc Derivative Assets Cross Maturity Netting OtcDerivativeAssetsCrossMaturityNetting	59603000	USD
CY2021Q1	jef	Consolidated Otc Derivative Assets Net Of Crossmaturity Netting ConsolidatedOtcDerivativeAssetsNetOfCrossmaturityNetting	688994000	USD
CY2021Q1	jef	Derivative Assets Cross Product Counterparty Netting DerivativeAssetsCrossProductCounterpartyNetting	24263000	USD
CY2021Q1	jef	Otc Derivative Assets Included In Financial Instruments Owned OtcDerivativeAssetsIncludedInFinancialInstrumentsOwned	664731000	USD
CY2021Q1	jef	Exchange Traded Derivative Assets And Other Credit Agreements ExchangeTradedDerivativeAssetsAndOtherCreditAgreements	61400000	USD
CY2021Q1	jef	Cash Collateral Received CashCollateralReceived	196200000	USD
CY2021Q1	jef	Otc Derivative Liabilities Having Maturity Period Of Zero To Twelve Months OtcDerivativeLiabilitiesHavingMaturityPeriodOfZeroToTwelveMonths	438877000	USD
CY2021Q1	jef	Otc Derivative Liabilities Having Maturity Period Of One To Five Years OtcDerivativeLiabilitiesHavingMaturityPeriodOfOneToFiveYears	975809000	USD
CY2021Q1	jef	Consolidated Otc Derivative Liabilities Net Of Crossmaturity Netting ConsolidatedOtcDerivativeLiabilitiesNetOfCrossmaturityNetting	1614674000	USD
CY2021Q1	jef	Derivative Liabilities Cross Product Counterparty Netting DerivativeLiabilitiesCrossProductCounterpartyNetting	24263000	USD
CY2021Q1	jef	Otc Derivative Liabilities Included In Financial Instruments Sold Not Yet Purchased OtcDerivativeLiabilitiesIncludedInFinancialInstrumentsSoldNotYetPurchased	1590411000	USD
CY2021Q1	jef	Exchange Traded Derivative Liabilities And Other Credit Agreements ExchangeTradedDerivativeLiabilitiesAndOtherCreditAgreements	91900000	USD
CY2021Q1	jef	Cash Collateral Pledged CashCollateralPledged	588700000	USD
CY2021Q1	jef	Fair Value Of Otc Derivatives Assets Counterparty Credit Quality FairValueOfOtcDerivativesAssetsCounterpartyCreditQuality	162505000	USD
CY2021Q1	jef	Fair Value Of Otc Derivatives Assets Counterparty Credit Quality Bbb Minus To Bbb Plus FairValueOfOtcDerivativesAssetsCounterpartyCreditQualityBbbMinusToBbbPlus	38774000	USD
CY2021Q1	jef	Fair Value Of Otc Derivatives Assets Counterparty Credit Quality Bb Plus Or Lower FairValueOfOtcDerivativesAssetsCounterpartyCreditQualityBbPlusOrLower	201073000	USD
CY2021Q1	jef	Fair Value Of Over Counter Derivatives Assets Counterparty Credit Quality Unrated FairValueOfOverCounterDerivativesAssetsCounterpartyCreditQualityUnrated	262379000	USD
CY2021Q1	jef	Otc Derivative Assets Included In Financial Instruments Owned OtcDerivativeAssetsIncludedInFinancialInstrumentsOwned	664731000	USD
CY2021Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	464600000	USD
CY2020Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	284600000	USD
CY2021Q1	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	33000000.0	USD
CY2020Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	129800000	USD
CY2021Q1	jef	Collateral Received Aggregate Fair Value CollateralReceivedAggregateFairValue	244100000	USD
CY2020Q4	jef	Collateral Received Aggregate Fair Value CollateralReceivedAggregateFairValue	141400000	USD
CY2021Q1	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	675700000	USD
CY2020Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	296200000	USD
CY2021Q1	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	2519077000	USD
CY2021Q1	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	16859028000	USD
CY2021Q1	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	0	USD
CY2021Q1	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	19378105000	USD
CY2020Q4	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	1810748000	USD
CY2020Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	15159273000	USD
CY2020Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	7517000	USD
CY2020Q4	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	16977538000	USD
CY2021Q1	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	2519077000	USD
CY2021Q1	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	16859028000	USD
CY2021Q1	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	19378105000	USD
CY2020Q4	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	1810748000	USD
CY2020Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	15159273000	USD
CY2020Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	7517000	USD
CY2020Q4	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	16977538000	USD
CY2021Q1	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	32800000000	USD
CY2020Q4	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	25900000000	USD
CY2021Q1	us-gaap	Securities Borrowed Gross SecuritiesBorrowedGross	7150657000	USD
CY2021Q1	us-gaap	Securities Borrowed Liability SecuritiesBorrowedLiability	0	USD
CY2021Q1	us-gaap	Securities Borrowed SecuritiesBorrowed	7150657000	USD
CY2021Q1	us-gaap	Securities Borrowed Collateral Obligation To Return Cash SecuritiesBorrowedCollateralObligationToReturnCash	567061000	USD
CY2021Q1	us-gaap	Securities Borrowed Collateral Obligation To Return Securities SecuritiesBorrowedCollateralObligationToReturnSecurities	1984216000	USD
CY2021Q1	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	283889000	USD
CY2021Q1	us-gaap	Securities Borrowed Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesBorrowedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	4599380000	USD
CY2021Q1	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	16331676000	USD
CY2021Q1	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	9651392000	USD
CY2021Q1	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	6680284000	USD
CY2021Q1	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Cash SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnCash	283889000	USD
CY2021Q1	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities	6328407000	USD
CY2021Q1	us-gaap	Securities Purchased Under Agreements To Resell Amount Offset Against Collateral SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral	67988000	USD
CY2021Q1	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	2519077000	USD
CY2021Q1	us-gaap	Securities Loaned Asset SecuritiesLoanedAsset	0	USD
CY2021Q1	us-gaap	Securities Loaned SecuritiesLoaned	2519077000	USD
CY2021Q1	us-gaap	Securities Loaned Collateral Right To Reclaim Cash SecuritiesLoanedCollateralRightToReclaimCash	567061000	USD
CY2021Q1	us-gaap	Securities Loaned Collateral Right To Reclaim Securities SecuritiesLoanedCollateralRightToReclaimSecurities	1908973000	USD
CY2021Q1	us-gaap	Securities Loaned Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesLoanedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	43043000	USD
CY2021Q1	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	16859028000	USD
CY2021Q1	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	9651392000	USD
CY2021Q1	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	7207636000	USD
CY2021Q1	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	6408994000	USD
CY2021Q1	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	514753000	USD
CY2020Q4	us-gaap	Securities Borrowed Gross SecuritiesBorrowedGross	6934762000	USD
CY2020Q4	us-gaap	Securities Borrowed Liability SecuritiesBorrowedLiability	0	USD
CY2020Q4	us-gaap	Securities Borrowed SecuritiesBorrowed	6934762000	USD
CY2020Q4	us-gaap	Securities Borrowed Collateral Obligation To Return Cash SecuritiesBorrowedCollateralObligationToReturnCash	395342000	USD
CY2020Q4	us-gaap	Securities Borrowed Collateral Obligation To Return Securities SecuritiesBorrowedCollateralObligationToReturnSecurities	1706046000	USD
CY2020Q4	us-gaap	Securities Borrowed Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesBorrowedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	4833374000	USD
CY2020Q4	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	11939773000	USD
CY2020Q4	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	6843004000	USD
CY2020Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	5096769000	USD
CY2020Q4	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Cash SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnCash	412327000	USD
CY2020Q4	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities	4578560000	USD
CY2020Q4	us-gaap	Securities Purchased Under Agreements To Resell Amount Offset Against Collateral SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral	105882000	USD
CY2020Q4	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	1810748000	USD
CY2020Q4	us-gaap	Securities Loaned Asset SecuritiesLoanedAsset	0	USD
CY2020Q4	us-gaap	Securities Loaned SecuritiesLoaned	1810748000	USD
CY2020Q4	us-gaap	Securities Loaned Collateral Right To Reclaim Cash SecuritiesLoanedCollateralRightToReclaimCash	395342000	USD
CY2020Q4	us-gaap	Securities Loaned Collateral Right To Reclaim Securities SecuritiesLoanedCollateralRightToReclaimSecurities	1397550000	USD
CY2020Q4	us-gaap	Securities Loaned Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesLoanedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	17856000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	15159273000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	6843004000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8316269000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	412327000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	7122422000	USD
CY2020Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	781520000	USD
CY2021Q1	jef	Securities Borrowed Asset Net Subject To Review SecuritiesBorrowedAssetNetSubjectToReview	4511400000	USD
CY2021Q1	jef	Securities Borrowed Asset Collateral Received Subject To Review SecuritiesBorrowedAssetCollateralReceivedSubjectToReview	4383800000	USD
CY2021Q1	jef	Securities Sold Under Agreements To Repurchase Net Amount Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseNetAmountSubjectToReview	505000000.0	USD
CY2021Q1	jef	Securities Sold Under Agreements To Repurchase Collateral Pledged Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseCollateralPledgedSubjectToReview	520200000	USD
CY2020Q4	jef	Securities Borrowed Asset Net Subject To Review SecuritiesBorrowedAssetNetSubjectToReview	4757800000	USD
CY2020Q4	jef	Securities Borrowed Asset Collateral Received Subject To Review SecuritiesBorrowedAssetCollateralReceivedSubjectToReview	4617000000.0	USD
CY2020Q4	jef	Securities Sold Under Agreements To Repurchase Net Amount Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseNetAmountSubjectToReview	720000000.0	USD
CY2020Q4	jef	Securities Sold Under Agreements To Repurchase Collateral Pledged Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseCollateralPledgedSubjectToReview	733900000	USD
CY2021Q1	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	615100000	USD
CY2020Q4	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	604300000	USD
CY2021Q1	jef	Assets Transferred Due To Securitization AssetsTransferredDueToSecuritization	3583500000	USD
CY2020Q1	jef	Assets Transferred Due To Securitization AssetsTransferredDueToSecuritization	2334600000	USD
CY2021Q1	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	3583100000	USD
CY2020Q1	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	2334700000	USD
CY2021Q1	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	6300000	USD
CY2020Q1	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	7000000.0	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1686563000	USD
CY2021Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-10568000	USD
CY2021Q1	jef	Equity Method Investment Other Income Losses Related To Associated Companies Primarily Classified As Revenues EquityMethodInvestmentOtherIncomeLossesRelatedToAssociatedCompaniesPrimarilyClassifiedAsRevenues	87906000	USD
CY2021Q1	jef	Equity Method Investments Contributionsto Distributions From Associated Companies Net EquityMethodInvestmentsContributionstoDistributionsFromAssociatedCompaniesNet	-75119000	USD
CY2021Q1	jef	Equity Method Investments Other Activity Net EquityMethodInvestmentsOtherActivityNet	266000	USD
CY2021Q1	us-gaap	Equity Method Investments EquityMethodInvestments	1689048000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1652957000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-67855000	USD
CY2020Q1	jef	Equity Method Investment Other Income Losses Related To Associated Companies Primarily Classified As Revenues EquityMethodInvestmentOtherIncomeLossesRelatedToAssociatedCompaniesPrimarilyClassifiedAsRevenues	28759000	USD
CY2020Q1	jef	Equity Method Investments Contributionsto Distributions From Associated Companies Net EquityMethodInvestmentsContributionstoDistributionsFromAssociatedCompaniesNet	-60517000	USD
CY2020Q1	jef	Equity Method Investments Other Activity Net EquityMethodInvestmentsOtherActivityNet	9284000	USD
CY2020Q1	us-gaap	Equity Method Investments EquityMethodInvestments	1562628000	USD
CY2021Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-10568000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-67855000	USD
CY2021Q1	jef	Equity Method Investment Other Income Losses Related To Associated Companies Primarily Classified As Revenues EquityMethodInvestmentOtherIncomeLossesRelatedToAssociatedCompaniesPrimarilyClassifiedAsRevenues	87906000	USD
CY2020Q1	jef	Equity Method Investment Other Income Losses Related To Associated Companies Primarily Classified As Revenues EquityMethodInvestmentOtherIncomeLossesRelatedToAssociatedCompaniesPrimarilyClassifiedAsRevenues	28759000	USD
CY2021Q1	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	164299000	USD
CY2020Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	167153000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	1750023000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	1746314000	USD
CY2021Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1914322000	USD
CY2020Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1913467000	USD
CY2021Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3600000	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3800000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	10789000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	11134000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	9900000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	9143000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	8632000	USD
CY2021Q1	us-gaap	Short Term Borrowings ShortTermBorrowings	882941000	USD
CY2020Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	764715000	USD
CY2021Q1	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0182
CY2020Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0187
CY2021Q1	us-gaap	Long Term Debt LongTermDebt	8243150000	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	8352039000	USD
CY2021Q1	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	31000000.0	USD
CY2020Q4	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	24700000	USD
CY2020Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.15
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2021Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.20
CY2021Q1	us-gaap	Share Based Compensation ShareBasedCompensation	20700000	USD
CY2020Q1	us-gaap	Share Based Compensation ShareBasedCompensation	9900000	USD
CY2021Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	5100000	USD
CY2020Q1	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	2600000	USD
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	37100000	USD
CY2021Q1	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y8M12D
CY2021Q1	jef	Other Shares Issuable OtherSharesIssuable	1104000	shares
CY2021Q1	jef	Potential Maximum Increase To Common Shares Outstanding From Restricted Stock And Other Shares PotentialMaximumIncreaseToCommonSharesOutstandingFromRestrictedStockAndOtherShares	28048000	shares
CY2021Q1	jef	Restricted Cash Awards Compensation Cost Not Yet Recognized RestrictedCashAwardsCompensationCostNotYetRecognized	423000000.0	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1432643000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1432643000	USD
CY2021Q1	jef	Restricted Cash Awards Compensation Cost Not Yet Recognized Period For Recognition RestrictedCashAwardsCompensationCostNotYetRecognizedPeriodForRecognition	P3Y
CY2021Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1432643000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	912816000	USD
CY2021Q1	jef	Revenue Other Sources RevenueOtherSources	1270945000	USD
CY2020Q1	jef	Revenue Other Sources RevenueOtherSources	779448000	USD
CY2021Q1	us-gaap	Revenues Revenues	2703588000	USD
CY2020Q1	us-gaap	Revenues Revenues	1692264000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	912816000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	912816000	USD
CY2021Q1	jef	Contract With Customer Revenue Relatedto Performance Obligations Satisfiedin Previous Periods ContractWithCustomerRevenueRelatedtoPerformanceObligationsSatisfiedinPreviousPeriods	8200000	USD
CY2020Q1	jef	Contract With Customer Revenue Relatedto Performance Obligations Satisfiedin Previous Periods ContractWithCustomerRevenueRelatedtoPerformanceObligationsSatisfiedinPreviousPeriods	6400000	USD
CY2021Q1	jef	Revenues Associated With Distribution Services RevenuesAssociatedWithDistributionServices	2900000	USD
CY2020Q1	jef	Revenues Associated With Distribution Services RevenuesAssociatedWithDistributionServices	5600000	USD
CY2021Q1	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	367000000.0	USD
CY2020Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	332500000	USD
CY2021Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	15900000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	14800000	USD
CY2021Q1	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	6900000	USD
CY2020Q1	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	5600000	USD
CY2021Q1	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	1300000	USD
CY2020Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	1800000	USD
CY2021Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1200000	USD
CY2020Q1	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1900000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	431700000	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	92200000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	401400000	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	87100000	USD
CY2021Q1	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	410400000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	393700000	USD
CY2021Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	218200000	USD
CY2021Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.273
CY2020Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	45800000	USD
CY2020Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.290
CY2021Q1	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	582435000	USD
CY2020Q1	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	113010000	USD
CY2021Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	122500000	USD
CY2021Q1	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	3216000	USD
CY2020Q1	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	695000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	579219000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	112315000	USD
CY2021Q1	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	42000	USD
CY2020Q1	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-3000	USD
CY2021Q1	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	1626000	USD
CY2020Q1	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	1422000	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	580887000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	113734000	USD
CY2021Q1	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	249352000	shares
CY2020Q1	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	286682000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	266386000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	302406000	shares
CY2021Q1	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	4441000	shares
CY2020Q1	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	4441000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	272881000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	308280000	shares
CY2021Q1	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1482000	shares
CY2020Q1	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1902000	shares
CY2020Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	250000000.0	USD
CY2020Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	100000000	USD
CY2020Q2	jef	Stock Repurchase Program Additional Authorized Amount StockRepurchaseProgramAdditionalAuthorizedAmount	176700000	USD
CY2020Q3	jef	Stock Repurchase Program Additional Authorized Amount StockRepurchaseProgramAdditionalAuthorizedAmount	128000000.0	USD
CY2021Q1	jef	Stock Repurchase Program Additional Authorized Amount StockRepurchaseProgramAdditionalAuthorizedAmount	192800000	USD
CY2021Q1	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	5000000	shares
CY2021Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	127500000	USD
CY2021Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	25.51
CY2021Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	122500000	USD
CY2021Q1	us-gaap	Contractual Obligation Future Minimum Payments Due Remainder Of Fiscal Year ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear	10064000000.0	USD
CY2021Q1	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	629700000	USD
CY2021Q1	us-gaap	Contractual Obligation Due In Second And Third Year ContractualObligationDueInSecondAndThirdYear	194900000	USD
CY2021Q1	us-gaap	Contractual Obligation Due In Fourth And Fifth Year ContractualObligationDueInFourthAndFifthYear	12900000	USD
CY2021Q1	us-gaap	Contractual Obligation Due After Fifth Year ContractualObligationDueAfterFifthYear	23500000	USD
CY2021Q1	us-gaap	Contractual Obligation ContractualObligation	10925000000.0	USD
CY2021Q1	jef	Derivative Contracts Meeting Definitionof A Guarantee DerivativeContractsMeetingDefinitionofAGuarantee	305300000	USD
CY2021Q1	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	2486942000	USD
CY2020Q1	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1386328000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	800785000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	157794000	USD
CY2021Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	38767000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	39470000	USD
CY2021Q1	us-gaap	Assets Assets	56868919000	USD
CY2020Q4	us-gaap	Assets Assets	53118352000	USD

Files In Submission

Name	View Source	Status
0000096223-21-000020-index-headers.html	Edgar Link	pending
0000096223-21-000020-index.html	Edgar Link	pending
0000096223-21-000020.txt	Edgar Link	pending
0000096223-21-000020-xbrl.zip	Edgar Link	pending
exhibit101_stockoptionagre.htm	Edgar Link	pending
exhibit102_saragreementform.htm	Edgar Link	pending
exhibit103_sarconversionag.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
jef-20210228.htm	Edgar Link	pending
jef-20210228.xsd	Edgar Link	pending
jef-20210228_cal.xml	Edgar Link	unprocessable
jef-20210228_def.xml	Edgar Link	unprocessable
jef-20210228_g1.jpg	Edgar Link	pending
jef-20210228_g2.jpg	Edgar Link	pending
jef-20210228_htm.xml	Edgar Link	completed
jef-20210228_lab.xml	Edgar Link	unprocessable
jef-20210228_pre.xml	Edgar Link	unprocessable
jfg2282021exhibit311.htm	Edgar Link	pending
jfg2282021exhibit312.htm	Edgar Link	pending
jfg2282021exhibit321.htm	Edgar Link	pending
jfg2282021exhibit322.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R100.htm	Edgar Link	pending
R101.htm	Edgar Link	pending
R102.htm	Edgar Link	pending
R103.htm	Edgar Link	pending
R104.htm	Edgar Link	pending
R105.htm	Edgar Link	pending
R106.htm	Edgar Link	pending
R107.htm	Edgar Link	pending
R108.htm	Edgar Link	pending
R109.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R110.htm	Edgar Link	pending
R111.htm	Edgar Link	pending
R112.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
R69.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R70.htm	Edgar Link	pending
R71.htm	Edgar Link	pending
R72.htm	Edgar Link	pending
R73.htm	Edgar Link	pending
R74.htm	Edgar Link	pending
R75.htm	Edgar Link	pending
R76.htm	Edgar Link	pending
R77.htm	Edgar Link	pending
R78.htm	Edgar Link	pending
R79.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R80.htm	Edgar Link	pending
R81.htm	Edgar Link	pending
R82.htm	Edgar Link	pending
R83.htm	Edgar Link	pending
R84.htm	Edgar Link	pending
R85.htm	Edgar Link	pending
R86.htm	Edgar Link	pending
R87.htm	Edgar Link	pending
R88.htm	Edgar Link	pending
R89.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
R90.htm	Edgar Link	pending
R91.htm	Edgar Link	pending
R92.htm	Edgar Link	pending
R93.htm	Edgar Link	pending
R94.htm	Edgar Link	pending
R95.htm	Edgar Link	pending
R96.htm	Edgar Link	pending
R97.htm	Edgar Link	pending
R98.htm	Edgar Link	pending
R99.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$JEF
Jefferies Financial Group Inc. Stock $jef

2021 Q1 Form 10-Q Financial Statement

#000009622321000020 Filed on April 08, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JEF Jefferies Financial Group Inc. Stock $jef

2021 Q1 Form 10-Q Financial Statement

#000009622321000020 Filed on April 08, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JEF
Jefferies Financial Group Inc. Stock $jef