$JEF
Jefferies Financial Group Inc. Stock $jef

$jef Overview Financials Valuation SEC Filings Company Website

2019 Form 8-K Financial Statement

#000009622320000032 Filed on June 03, 2020

Income Statement

Concept	2019	2018 Q4	2018 Q3
Revenue	$5.359B	$806.6M	$1.459B
YoY Change	11.92%	-72.56%	32.32%
Cost Of Revenue	$319.6M		$84.88M
YoY Change	-81.6%		18.55%
Gross Profit	$5.039B		$1.374B
YoY Change	65.16%		33.28%
Gross Profit Margin	94.04%		94.18%
Selling, General & Admin	$2.835B		$706.4M
YoY Change	0.39%		1.95%
% of Gross Profit	56.26%		51.41%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$152.9M	$24.60M	$32.30M
YoY Change	45.31%	5.13%	30.22%
% of Gross Profit	3.03%		2.35%
Operating Expenses	$2.988B		$738.8M
YoY Change	1.46%		-3.36%
Operating Profit	$2.051B		$635.3M
YoY Change	1834.92%		138.39%
Interest Expense	$87.18M		$28.84M
YoY Change	-372.43%		12.59%
% of Operating Profit	4.25%		4.54%
Other Income/Expense, Net
YoY Change
Pretax Income	$478.6M		$272.7M
YoY Change	61.69%		967.37%
Income Tax	-$484.0M		$90.39M
% Of Pretax Income	-101.12%		33.15%
Net Earnings	$959.6M	-$20.37M	$192.6M
YoY Change	-6.56%	-92.5%	93.89%
Net Earnings / Revenue	17.91%	-2.53%	13.2%
Basic Earnings Per Share	$3.07	-$0.06	$0.56
Diluted Earnings Per Share	$3.03	-$0.06	$0.55
COMMON SHARES
Basic Shares Outstanding	310.7M shares	329.1M shares	341.4M shares
Diluted Shares Outstanding	317.0M shares	329.1M shares	350.3M shares

Balance Sheet

Concept	2019	2018 Q4	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$7.679B	$5.259B	$4.896B
YoY Change	46.02%	-0.3%	-2.41%
Cash & Equivalents	$7.679B	$5.259B	$4.896B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$13.42B	$11.55B	$10.76B
YoY Change	16.26%	7.97%	-0.65%
LONG-TERM ASSETS
Property, Plant & Equipment	$385.0M	$351.0M	$346.9M
YoY Change	9.69%	-53.23%	-52.33%
Goodwill		$1.702B	$1.703B
YoY Change		-1.18%	-0.89%
Intangibles		$188.3M	$191.8M
YoY Change		-74.59%	-74.59%
Long-Term Investments	$30.47B	$2.417B	$2.451B
YoY Change	-0.46%	16.96%	4.25%
Other Assets	$1.299B	$1.221B	$1.382B
YoY Change	-0.15%	-7.64%	-36.2%
Total Long-Term Assets	$36.04B	$35.59B	$38.19B
YoY Change	1.27%	-2.44%	3.67%
TOTAL ASSETS
Total Short-Term Assets	$13.42B	$11.55B	$10.76B
Total Long-Term Assets	$36.04B	$35.59B	$38.19B
Total Assets	$49.46B	$47.13B	$48.95B
YoY Change	4.94%	-0.08%	2.69%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$8.179B	$7.407B	$6.680B
YoY Change	10.42%	3.33%	-5.98%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$9.588B	$387.5M	$382.0M
YoY Change	-11.79%	-11.17%	-8.42%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$17.77B	$18.28B	$19.46B
YoY Change	-2.79%	-4.36%	3.73%
LONG-TERM LIABILITIES
Long-Term Debt	$11.53B	$9.277B	$9.343B
YoY Change	24.32%	2.62%	2.56%
Other Long-Term Liabilities	$10.53B	$9.479B	$9.479B
YoY Change	11.11%	12.11%	8.11%
Total Long-Term Liabilities	$22.07B	$18.76B	$18.82B
YoY Change	17.64%	7.21%	5.28%
TOTAL LIABILITIES
Total Short-Term Liabilities	$17.77B	$18.28B	$19.46B
Total Long-Term Liabilities	$22.07B	$18.76B	$18.82B
Total Liabilities	$39.88B	$36.91B	$38.16B
YoY Change	7.58%	1.17%	4.5%
SHAREHOLDERS EQUITY
Retained Earnings		$5.610B	$5.672B
YoY Change		19.34%	13.44%
Common Stock		$4.162B	$4.661B
YoY Change		-17.29%	-8.39%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares		109.5M shares	85.56M shares
Shareholders Equity	$9.580B	$10.06B	$10.62B
YoY Change
Total Liabilities & Shareholders Equity	$49.46B	$47.13B	$48.95B
YoY Change	4.94%	-0.08%	2.69%

Cashflow Statement

Concept	2019	2018 Q4	2018 Q3
OPERATING ACTIVITIES
Net Income	$959.6M	-$20.37M	$192.6M
YoY Change	-6.56%	-92.5%	93.89%
Depreciation, Depletion And Amortization	$152.9M	$24.60M	$32.30M
YoY Change	45.31%	5.13%	30.22%
Cash From Operating Activities	-$827.8M	$491.2M	$724.0M
YoY Change	-219.79%	-280.19%	23.26%
INVESTING ACTIVITIES
Capital Expenditures	-$232.2M	-$43.30M	-$41.50M
YoY Change	-28.71%	32.01%	56.02%
Acquisitions	-$100.7M
YoY Change
Other Investing Activities	-$8.307M	$304.2M	-$85.10M
YoY Change	-101.77%	4245.71%	-57.02%
Cash From Investing Activities	$1.707B	$260.9M	-$126.6M
YoY Change	1098.8%	-1111.24%	-43.63%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$508.8M
YoY Change	-145.14%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$1.590B	-538.4M	-236.3M
YoY Change	-376.06%	-348.34%	833.99%
NET CHANGE
Cash From Operating Activities	-$827.8M	491.2M	724.0M
Cash From Investing Activities	$1.707B	260.9M	-126.6M
Cash From Financing Activities	$1.590B	-538.4M	-236.3M
Net Change In Cash	$2.468B	213.7M	361.1M
YoY Change	857.61%	-361.89%	6.99%
FREE CASH FLOW
Cash From Operating Activities	-$827.8M	$491.2M	$724.0M
Capital Expenditures	-$232.2M	-$43.30M	-$41.50M
Free Cash Flow	-$595.6M	$534.5M	$765.5M
YoY Change	-158.58%	-322.89%	24.67%

Facts In Submission

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CY2020Q2	dei	Document Type DocumentType	8-K
CY2020Q2	dei	Document Period End Date DocumentPeriodEndDate	2020-06-03
CY2020Q2	dei	Entity Registrant Name EntityRegistrantName	JEFFERIES FINANCIAL GROUP INC.
CY2020Q2	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	NY
CY2020Q2	dei	Entity File Number EntityFileNumber	1-5721
CY2020Q2	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	13-2615557
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CY2018Q4	us-gaap	Common Stock Value CommonStockValue	307515000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3627711000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3854847000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-273039000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	288286000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5933389000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5610218000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	9579705000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	10060866000	USD
CY2019Q4	us-gaap	Minority Interest MinorityInterest	21979000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	18391000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9601684000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10079257000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	49460234000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	47131095000	USD
CY2019	us-gaap	Revenues Revenues	5358656000	USD
	us-gaap	Revenues Revenues	5009728000	USD
CY2017	us-gaap	Revenues Revenues	5048906000	USD
CY2019	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	3892976000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	3764034000	USD
CY2017	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	4077445000	USD
CY2019	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1824891000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1862782000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1950935000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	3396042000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	681403000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	319641000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	307071000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	280952000	USD
CY2019	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	223140000	USD
	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	184210000	USD
CY2017	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	174506000	USD
CY2019	us-gaap	Interest Expense InterestExpense	87177000	USD
	us-gaap	Interest Expense InterestExpense	89249000	USD
CY2017	us-gaap	Interest Expense InterestExpense	101202000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	152871000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	120317000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110395000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	1009643000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	961328000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	778052000	USD
CY2019	us-gaap	Costs And Expenses CostsAndExpenses	3617363000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	3524957000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	275613000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	239077000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	202995000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	57023000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-74901000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	478608000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	296100000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	606502000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-483955000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19008000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	642286000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	962563000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	277092000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-35784000	USD
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	0	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	130063000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	288631000	USD
CY2019	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	643921000	USD
CY2017	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2019	us-gaap	Profit Loss ProfitLoss	962563000	USD
	us-gaap	Profit Loss ProfitLoss	1051076000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	252847000	USD
CY2019	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1847000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-12975000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-3455000	USD
CY2019	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-286000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	37263000	USD
CY2017	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	84576000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	5103000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4470000	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4375000	USD
CY2019	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	959593000	USD
	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	1022318000	USD
CY2017	jef	Net Income Loss Available To Common Stockholders NetIncomeLossAvailableToCommonStockholders	167351000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	3.07
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.82
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.10
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0.27
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0.55
CY2019	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerBasicShare	0
	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerBasicShare	1.84
CY2017	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.07
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.93
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.45
CY2019	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	3.03
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.81
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.10
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.26
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.55
CY2019	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	0
	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	1.83
CY2017	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.03
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.90
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.45
CY2019	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	959593000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	285475000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-36003000	USD
CY2019	jef	Income Loss From Discontinued Operations Net Of Taxes Attributable To Parent IncomeLossFromDiscontinuedOperationsNetOfTaxesAttributableToParent	0	USD
	jef	Income Loss From Discontinued Operations Net Of Taxes Attributable To Parent IncomeLossFromDiscontinuedOperationsNetOfTaxesAttributableToParent	92922000	USD
CY2017	jef	Income Loss From Discontinued Operations Net Of Taxes Attributable To Parent IncomeLossFromDiscontinuedOperationsNetOfTaxesAttributableToParent	203354000	USD
CY2019	jef	Gain Loss On Disposal Of Discontinued Operations Net Of Tax Attributable To Parent GainLossOnDisposalOfDiscontinuedOperationsNetOfTaxAttributableToParent	0	USD
	jef	Gain Loss On Disposal Of Discontinued Operations Net Of Tax Attributable To Parent GainLossOnDisposalOfDiscontinuedOperationsNetOfTaxAttributableToParent	643921000	USD
CY2017	jef	Gain Loss On Disposal Of Discontinued Operations Net Of Tax Attributable To Parent GainLossOnDisposalOfDiscontinuedOperationsNetOfTaxAttributableToParent	0	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	959593000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1022318000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	167351000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	962563000	USD
	us-gaap	Profit Loss ProfitLoss	1051076000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	252847000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	487000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-1560000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	5923000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	543178000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	109000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	212000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-542691000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-1669000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5711000	USD
CY2019	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	544000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-71543000	USD
CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	78493000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-149000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	20459000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-5310000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	693000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-92002000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	83803000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-13588000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	29620000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	-21394000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	-427000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	916000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	-13161000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	28704000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	7349000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	-21394000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1608000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-936000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	470000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
CY2019	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-470000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1608000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-936000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	7103000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	844000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-3526000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	1407000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	517000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	5696000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6505000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-4043000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-561325000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-56854000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	71227000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	401238000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	994222000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	324074000	USD
CY2019	jef	Comprehensive Income Loss Net Of Tax Attributable To Nonredeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToNonredeemableNoncontrollingInterests	-1847000	USD
	jef	Comprehensive Income Loss Net Of Tax Attributable To Nonredeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToNonredeemableNoncontrollingInterests	-12975000	USD
CY2017	jef	Comprehensive Income Loss Net Of Tax Attributable To Nonredeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToNonredeemableNoncontrollingInterests	-3455000	USD
CY2019	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	-286000	USD
	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	37263000	USD
CY2017	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	84576000	USD
CY2019	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	5103000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4470000	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	4375000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	398268000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	965464000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	238578000	USD
CY2019	us-gaap	Profit Loss ProfitLoss	962563000	USD
	us-gaap	Profit Loss ProfitLoss	1051076000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	252847000	USD
CY2019	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	0	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	1050582000	USD
	jef	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	236406000	USD
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	407312000	USD
CY2019	jef	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	6391000	USD
CY2017	jef	Deferred Income Tax Expense Benefit Including Discontinued Operations DeferredIncomeTaxExpenseBenefitIncludingDiscontinuedOperations	712055000	USD
CY2019	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544583000	USD
	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	0	USD
CY2017	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	0	USD
CY2019	jef	Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements	139708000	USD
	jef	Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements	105156000	USD
CY2017	jef	Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements Depreciationandamortizationofrealestatepropertyequipmentandleaseholdimprovements	92918000	USD
CY2019	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	-9942000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	-37749000	USD
CY2017	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	-28159000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	49848000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	48249000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	48384000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	29800000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	35223000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	36452000	USD
CY2019	jef	Income Losses Relatedto Associated Companies IncomeLossesRelatedtoAssociatedCompanies	288164000	USD
	jef	Income Losses Relatedto Associated Companies IncomeLossesRelatedtoAssociatedCompanies	130685000	USD
CY2017	jef	Income Losses Relatedto Associated Companies IncomeLossesRelatedtoAssociatedCompanies	34494000	USD
CY2019	jef	Dividends Or Distributions From Associated Companies DividendsOrDistributionsFromAssociatedCompanies	467157000	USD
	jef	Dividends Or Distributions From Associated Companies DividendsOrDistributionsFromAssociatedCompanies	162988000	USD
CY2017	jef	Dividends Or Distributions From Associated Companies DividendsOrDistributionsFromAssociatedCompanies	143286000	USD
CY2019	jef	Netgainslossesrelatedtopropertyandequipmentandotherassets Netgainslossesrelatedtopropertyandequipmentandotherassets	42214000	USD
	jef	Netgainslossesrelatedtopropertyandequipmentandotherassets Netgainslossesrelatedtopropertyandequipmentandotherassets	-32461000	USD
CY2017	jef	Netgainslossesrelatedtopropertyandequipmentandotherassets Netgainslossesrelatedtopropertyandequipmentandotherassets	-32814000	USD
CY2019	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	210278000	USD
	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	221712000	USD
CY2017	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	179605000	USD
CY2019	jef	Increase Decreasein Securities Depositedwith Clearingand Depository Organizations IncreaseDecreaseinSecuritiesDepositedwithClearingandDepositoryOrganizations	169000	USD
	jef	Increase Decreasein Securities Depositedwith Clearingand Depository Organizations IncreaseDecreaseinSecuritiesDepositedwithClearingandDepositoryOrganizations	-64911000	USD
CY2017	jef	Increase Decreasein Securities Depositedwith Clearingand Depository Organizations IncreaseDecreaseinSecuritiesDepositedwithClearingandDepositoryOrganizations	-163000	USD
CY2019	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-218419000	USD
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	1451472000	USD
CY2017	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	648703000	USD
CY2019	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	1103708000	USD
	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	-1137134000	USD
CY2017	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	-50660000	USD
CY2019	jef	Increase Decrease In Securities Purchased Under Agreements To Resell IncreaseDecreaseInSecuritiesPurchasedUnderAgreementsToResell	1523222000	USD
	jef	Increase Decrease In Securities Purchased Under Agreements To Resell IncreaseDecreaseInSecuritiesPurchasedUnderAgreementsToResell	-807619000	USD
CY2017	jef	Increase Decrease In Securities Purchased Under Agreements To Resell IncreaseDecreaseInSecuritiesPurchasedUnderAgreementsToResell	-234740000	USD
CY2019	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	-211198000	USD
	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	602950000	USD
CY2017	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	555109000	USD
CY2019	jef	Increase Decrease Receivables From Customers Of Securities Operations IncreaseDecreaseReceivablesFromCustomersOfSecuritiesOperations	-524656000	USD
	jef	Increase Decrease Receivables From Customers Of Securities Operations IncreaseDecreaseReceivablesFromCustomersOfSecuritiesOperations	465960000	USD
CY2017	jef	Increase Decrease Receivables From Customers Of Securities Operations IncreaseDecreaseReceivablesFromCustomersOfSecuritiesOperations	732344000	USD
CY2019	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	2283000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-30864000	USD
CY2017	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	216189000	USD
CY2019	jef	Increase Decrease In Other Assets IncreaseDecreaseInOtherAssets	-15705000	USD
	jef	Increase Decrease In Other Assets IncreaseDecreaseInOtherAssets	-33484000	USD
CY2017	jef	Increase Decrease In Other Assets IncreaseDecreaseInOtherAssets	8102000	USD
CY2019	us-gaap	Increase Decrease In Trading Liabilities IncreaseDecreaseInTradingLiabilities	1051598000	USD
	us-gaap	Increase Decrease In Trading Liabilities IncreaseDecreaseInTradingLiabilities	1142878000	USD
CY2017	us-gaap	Increase Decrease In Trading Liabilities IncreaseDecreaseInTradingLiabilities	-25765000	USD
CY2019	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	-301727000	USD
	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	-964137000	USD
CY2017	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	381000	USD
CY2019	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	-1122982000	USD
	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	36956000	USD
CY2017	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	1838793000	USD
CY2019	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	111757000	USD
	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	250603000	USD
CY2017	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	-1079516000	USD
CY2019	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	631854000	USD
	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	512760000	USD
CY2017	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	366721000	USD
CY2019	jef	Increase Decreasein Trade Payables Expense Accrualsand Other Liabilities IncreaseDecreaseinTradePayablesExpenseAccrualsandOtherLiabilities	-160784000	USD
	jef	Increase Decreasein Trade Payables Expense Accrualsand Other Liabilities IncreaseDecreaseinTradePayablesExpenseAccrualsandOtherLiabilities	-112488000	USD
CY2017	jef	Increase Decreasein Trade Payables Expense Accrualsand Other Liabilities IncreaseDecreaseinTradePayablesExpenseAccrualsandOtherLiabilities	365385000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-61565000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	124580000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	25838000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-827837000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	526453000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	234463000	USD
CY2019	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	164650000	USD
CY2017	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	553831000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-827837000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	691103000	USD
	jef	Proceeds From Disposals Of Property And Equipment And Other Assets ProceedsFromDisposalsOfPropertyAndEquipmentAndOtherAssets	14052000	USD
CY2017	jef	Proceeds From Disposals Of Property And Equipment And Other Assets ProceedsFromDisposalsOfPropertyAndEquipmentAndOtherAssets	28042000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	788294000	USD
CY2019	jef	Payments To Acquire Property Plant And Equipment And Other Assets PaymentsToAcquirePropertyPlantAndEquipmentAndOtherAssets	232229000	USD
	jef	Payments To Acquire Property Plant And Equipment And Other Assets PaymentsToAcquirePropertyPlantAndEquipmentAndOtherAssets	325666000	USD
CY2017	jef	Payments To Acquire Property Plant And Equipment And Other Assets PaymentsToAcquirePropertyPlantAndEquipmentAndOtherAssets	123027000	USD
CY2019	jef	Proceeds From Disposals Of Property And Equipment And Other Assets ProceedsFromDisposalsOfPropertyAndEquipmentAndOtherAssets	11302000	USD
CY2019	jef	Proceeds From Sale Of Subsidiary Net Of Expenses And Cash Of Operations Sold ProceedsFromSaleOfSubsidiaryNetOfExpensesAndCashOfOperationsSold	-546000	USD
	jef	Proceeds From Sale Of Subsidiary Net Of Expenses And Cash Of Operations Sold ProceedsFromSaleOfSubsidiaryNetOfExpensesAndCashOfOperationsSold	100000000	USD
CY2017	jef	Proceeds From Sale Of Subsidiary Net Of Expenses And Cash Of Operations Sold ProceedsFromSaleOfSubsidiaryNetOfExpensesAndCashOfOperationsSold	289767000	USD
CY2019	jef	Proceeds From Sale Of Associated Companies ProceedsFromSaleOfAssociatedCompanies	790612000	USD
	jef	Proceeds From Sale Of Associated Companies ProceedsFromSaleOfAssociatedCompanies	379074000	USD
CY2017	jef	Proceeds From Sale Of Associated Companies ProceedsFromSaleOfAssociatedCompanies	173105000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-100723000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2019	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	570659000	USD
	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	351831000	USD
CY2017	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	49325000	USD
CY2019	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	323215000	USD
	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	216426000	USD
CY2017	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	272439000	USD
CY2019	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	267263000	USD
	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	1956983000	USD
CY2017	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	3305791000	USD
CY2019	jef	Capital Distributions And Loan Repayment From Associated Companies CapitalDistributionsAndLoanRepaymentFromAssociatedCompanies	110656000	USD
	jef	Capital Distributions And Loan Repayment From Associated Companies CapitalDistributionsAndLoanRepaymentFromAssociatedCompanies	1973739000	USD
CY2017	jef	Capital Distributions And Loan Repayment From Associated Companies CapitalDistributionsAndLoanRepaymentFromAssociatedCompanies	3106423000	USD
CY2019	jef	Cashofsubsidiaryentitiesdeconsolidated Cashofsubsidiaryentitiesdeconsolidated	0	USD
	jef	Cashofsubsidiaryentitiesdeconsolidated Cashofsubsidiaryentitiesdeconsolidated	0	USD
CY2017	jef	Cashofsubsidiaryentitiesdeconsolidated Cashofsubsidiaryentitiesdeconsolidated	21129000	USD
CY2019	jef	Purchases Of Investments Other Than Short Term PurchasesOfInvestmentsOtherThanShortTerm	2995000	USD
	jef	Purchases Of Investments Other Than Short Term PurchasesOfInvestmentsOtherThanShortTerm	3423191000	USD
CY2017	jef	Purchases Of Investments Other Than Short Term PurchasesOfInvestmentsOtherThanShortTerm	1146595000	USD
CY2019	jef	Proceeds From Maturities Of Investments ProceedsFromMaturitiesOfInvestments	531104000	USD
	jef	Proceeds From Maturities Of Investments ProceedsFromMaturitiesOfInvestments	1084277000	USD
CY2017	jef	Proceeds From Maturities Of Investments ProceedsFromMaturitiesOfInvestments	344223000	USD
CY2019	jef	Proceeds From Sales Of Investments ProceedsFromSalesOfInvestments	913175000	USD
	jef	Proceeds From Sales Of Investments ProceedsFromSalesOfInvestments	1571507000	USD
CY2017	jef	Proceeds From Sales Of Investments ProceedsFromSalesOfInvestments	443300000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-130000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1339000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	1707095000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-718466000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	12771000	USD
CY2019	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	860909000	USD
CY2017	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-67405000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1707095000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	142443000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-54634000	USD
CY2019	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	3275800000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	2754665000	USD
CY2017	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	1620691000	USD
CY2019	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	0	USD
CY2017	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	23324000	USD
CY2019	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	2588791000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	2678323000	USD
CY2017	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	848350000	USD
CY2019	jef	Proceeds From Other Secured Financings Net ProceedsFromOtherSecuredFinancingsNet	1533696000	USD
	jef	Proceeds From Other Secured Financings Net ProceedsFromOtherSecuredFinancingsNet	503043000	USD
CY2017	jef	Proceeds From Other Secured Financings Net ProceedsFromOtherSecuredFinancingsNet	1248000	USD
CY2019	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	26568000	USD
	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	10290000	USD
CY2017	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-5650000	USD
CY2019	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1112000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	3611000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1501000	USD
CY2019	jef	Net Contributionsfrom Distributionsto Redeemable Noncontrolling Interests NetContributionsfromDistributionstoRedeemableNoncontrollingInterests	-782000	USD
	jef	Net Contributionsfrom Distributionsto Redeemable Noncontrolling Interests NetContributionsfromDistributionstoRedeemableNoncontrollingInterests	455000	USD
CY2017	jef	Net Contributionsfrom Distributionsto Redeemable Noncontrolling Interests NetContributionsfromDistributionstoRedeemableNoncontrollingInterests	-185000	USD
CY2019	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5293000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	7408000	USD
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	12031000	USD
CY2019	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	6829000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	113000	USD
CY2017	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	40072000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	509914000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1130854000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100477000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	149647000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	151758000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	117407000	USD
CY2019	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	1589578000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-696165000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	602735000	USD
CY2019	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	120322000	USD
CY2017	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	-167934000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1589578000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-575843000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	434801000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-1063000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-19546000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12067000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	0	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	0	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Disposal Group Including Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations	-3136000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2467773000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	238157000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1177392000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6012662000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5774505000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4597113000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8480435000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6012662000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5774505000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	7678821000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5258809000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5275480000	USD
CY2019Q4	jef	Cash And Securities Segregated And On Deposit For Regulatory Purposes Or Deposited With Clearing And Depository Organizations CashAndSecuritiesSegregatedAndOnDepositForRegulatoryPurposesOrDepositedWithClearingAndDepositoryOrganizations	761809000	USD
CY2018Q4	jef	Cash And Securities Segregated And On Deposit For Regulatory Purposes Or Deposited With Clearing And Depository Organizations CashAndSecuritiesSegregatedAndOnDepositForRegulatoryPurposesOrDepositedWithClearingAndDepositoryOrganizations	673141000	USD
CY2017Q4	jef	Cash And Securities Segregated And On Deposit For Regulatory Purposes Or Deposited With Clearing And Depository Organizations CashAndSecuritiesSegregatedAndOnDepositForRegulatoryPurposesOrDepositedWithClearingAndDepositoryOrganizations	478284000	USD
CY2019Q4	jef	Restricted Cash Other Assets RestrictedCashOtherAssets	39805000	USD
CY2018Q4	jef	Restricted Cash Other Assets RestrictedCashOtherAssets	80712000	USD
CY2017Q4	jef	Restricted Cash Other Assets RestrictedCashOtherAssets	20741000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8480435000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	6012662000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5774505000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10303649000	USD
CY2017	jef	Profit Loss Excluding Net Income Loss Attributable To Redeemable Noncontrolling Interests ProfitLossExcludingNetIncomeLossAttributableToRedeemableNoncontrollingInterests	163896000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	71227000	USD
CY2017	jef	Tax Cuts And Jobs Act Reclassification From Aoci To Retained Earnings Tax Effect TaxCutsAndJobsActReclassificationFromAOCIToRetainedEarningsTaxEffect	0	USD
CY2017	jef	Minority Interest Increase From Contributions To Parent MinorityInterestIncreaseFromContributionsToParent	40072000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	12031000	USD
CY2017	jef	Deconsolidationof Real Estate Entity DeconsolidationofRealEstateEntity	167163000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	48384000	USD
CY2017	jef	Change In Fair Value Of Redeemable Noncontrolling Interests ChangeInFairValueOfRedeemableNoncontrollingInterests	-94937000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	100477000	USD
CY2017	us-gaap	Dividends Common Stock DividendsCommonStock	120974000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-7333000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10138979000	USD
CY2018Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	17812000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	10156791000	USD
	jef	Profit Loss Excluding Net Income Loss Attributable To Redeemable Noncontrolling Interests ProfitLossExcludingNetIncomeLossAttributableToRedeemableNoncontrollingInterests	1009343000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-56854000	USD
	jef	Reversal Of Cumulative Redeemable Noncontrolling Interests Fair Value Adjustments Prior To Deconsolidation ReversalOfCumulativeRedeemableNoncontrollingInterestsFairValueAdjustmentsPriorToDeconsolidation	237669000	USD
	jef	Minority Interest Increase From Contributions To Parent MinorityInterestIncreaseFromContributionsToParent	113000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	7408000	USD
	jef	Consolidation Of Asset Management Entity ConsolidationOfAssetManagementEntity	8316000	USD
	us-gaap	Consolidation Less Than Wholly Owned Subsidiary Parent Ownership Interest Changes Net ConsolidationLessThanWhollyOwnedSubsidiaryParentOwnershipInterestChangesNet	0	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	48249000	USD
	jef	Change In Fair Value Of Redeemable Noncontrolling Interests ChangeInFairValueOfRedeemableNoncontrollingInterests	-26551000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2485000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1148422000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	158464000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-13990000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10079257000	USD
CY2019	jef	Profit Loss Excluding Net Income Loss Attributable To Redeemable Noncontrolling Interests ProfitLossExcludingNetIncomeLossAttributableToRedeemableNoncontrollingInterests	957746000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-561325000	USD
CY2019	jef	Minority Interest Increase From Contributions To Parent MinorityInterestIncreaseFromContributionsToParent	6829000	USD
CY2019	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5293000	USD
CY2019	jef	Consolidation Of Asset Management Entity ConsolidationOfAssetManagementEntity	181780000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	49848000	USD
CY2019	jef	Change In Fair Value Of Redeemable Noncontrolling Interests ChangeInFairValueOfRedeemableNoncontrollingInterests	-1213000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	509970000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	158302000	USD
CY2019	us-gaap	Stockholders Equity Other StockholdersEquityOther	-13421000	USD
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9601684000	USD
CY2019	us-gaap	Nature Of Operations NatureOfOperations	Nature of Operations<div style="line-height:120%;padding-bottom:10px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Jefferies Financial Group Inc. ("Jefferies," "we," "our" or the "Company") is a diversified financial services company engaged in investment banking and capital markets, asset management and direct investing. Jefferies Group LLC ("Jefferies Group"), our largest subsidiary, is the largest independent full-service global investment banking firm headquartered in the U.S. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">In the fourth quarter of 2018, we changed our fiscal year end from a calendar year basis to a fiscal year ending on November 30, consistent with the fiscal year of Jefferies Group. Our 2018 fiscal year consists of the eleven month transition period beginning January 1, 2018 through November 30, 2018. Financial statements for 2017 continue to be presented on the basis of our previous calendar year end. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">In March 2013, Jefferies Group became an indirect wholly-owned subsidiary of Jefferies, yet retains a separate credit rating and continues to be a separate U.S. Securities and Exchange Commission ("SEC") reporting company. Jefferies Group has a November 30 year end. Prior to the fourth quarter of 2018, because our fiscal year end was December 31, we reflected Jefferies Group in our consolidated financial statements utilizing a one month lag. In connection with our change in fiscal year end to November 30, we eliminated the one month lag utilized to reflect Jefferies Group results beginning with the fourth quarter of 2018. Therefore, our results for the eleven months ended November 30, 2018, include twelve month results for Jefferies Group and eleven months for the remainder of our results.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;padding-bottom:10px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Jefferies Group operates in </span><span style="font-family:inherit;font-size:10pt;"><span>two</span></span><span style="font-family:inherit;font-size:10pt;"> 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, fixed income and foreign exchange products. Related services include, among other things, prime brokerage and equity finance, research and strategy, corporate lending and real estate finance. Asset Management provides investment management services to investors in the U.S. and overseas and invests capital in hedge funds, separately managed accounts and third-party asset managers. </span></div><div style="line-height:120%;padding-bottom:10px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Through Jefferies Group, we own </span><span style="font-family:inherit;font-size:10pt;"><span>50%</span></span><span style="font-family:inherit;font-size:10pt;"> of Jefferies Finance LLC ("Jefferies Finance"), Jefferies Group's joint venture with Massachusetts Mutual Life Insurance Company. Jefferies Finance is a commercial finance company whose primary focus is the origination and syndication of senior secured debt of middle market and growth companies in the form of term and revolving loans. Through Jefferies Group, we also have an interest in Berkadia Commercial Mortgage Holding LLC ("Berkadia"), Jefferies Group's 50-50 equity method joint venture with Berkshire Hathaway Inc. Berkadia is a U.S. commercial real estate finance company providing capital solutions, investment sales advisory and mortgage servicing for multifamily and commercial properties.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Our Asset Management segment includes both the operations of Leucadia Asset Management ("LAM") as well as the asset management operations 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="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Merchant Banking is where we own a diverse portfolio of businesses and investments that have the potential for significant value appreciation. Our current Merchant Banking businesses and investments include 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 including HomeFed LLC ("HomeFed"), formerly HomeFed Corporation; Idaho Timber (manufacturing); FXCM Group, LLC ("FXCM") (provider of online foreign exchange trading services); and The We Company, formerly known as WeWork, (global network of workspaces). Our Merchant Banking businesses and investments also included National Beef Packing Company, LLC ("National Beef") (beef processing), prior to its sale in November 2019;</span><span style="font-family:inherit;font-size:10pt;color:#ff0000;"> </span><span style="font-family:inherit;font-size:10pt;">Spectrum Brands Holdings, Inc. ("Spectrum Brands") (consumer products), prior to its distribution to shareholders in October 2019; Berkadia (commercial mortgage banking, investment sales and servicing), prior to its transfer to Jefferies Group in the fourth quarter of 2018; and Garcadia (automobile dealerships), prior to its sale in August 2018. 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="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">On June 5, 2018, we completed the sale of </span><span style="font-family:inherit;font-size:10pt;"><span>48%</span></span><span style="font-family:inherit;font-size:10pt;"> of National Beef to Marfrig Global Foods S.A. ("Marfrig"), reducing our then ownership in National Beef from </span><span style="font-family:inherit;font-size:10pt;"><span>79%</span></span><span style="font-family:inherit;font-size:10pt;"> to </span><span style="font-family:inherit;font-size:10pt;"><span>31%</span></span><span style="font-family:inherit;font-size:10pt;">. As of the closing of the sale on June 5, 2018, we deconsolidated our investment in National Beef and accounted for our remaining </span><span style="font-family:inherit;font-size:10pt;"><span>31%</span></span><span style="font-family:inherit;font-size:10pt;"> interest in National Beef under the equity method of accounting. We classified the results of National Beef prior to June 5, 2018 as discontinued operations in the Consolidated Statements of Operations. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">See Note 27 for more information. On November 29, 2019, we sold our remaining </span><span style="font-family:inherit;font-size:10pt;"><span>31%</span></span><span style="font-family:inherit;font-size:10pt;"> equity interest in National Beef to Marfrig and other shareholders and received a total of </span><span style="font-family:inherit;font-size:10pt;"><span>$970.0 million</span></span><span style="font-family:inherit;font-size:10pt;"> in cash, including </span><span style="font-family:inherit;font-size:10pt;"><span>$790.6 million</span></span><span style="font-family:inherit;font-size:10pt;"> of proceeds and </span><span style="font-family:inherit;font-size:10pt;"><span>$179.4 million</span></span><span style="font-family:inherit;font-size:10pt;"> from final distributions from National Beef around the time of the sale. The pre-tax gain recognized as a result of this transaction, </span><span style="font-family:inherit;font-size:10pt;"><span>$205.0 million</span></span><span style="font-family:inherit;font-size:10pt;"> for the twelve months ended November 30, 2019, is classified as Other revenue. As of November 30, 2019, we no longer hold an equity interest in National Beef.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Prior to October 11, 2019, we owned approximately </span><span style="font-family:inherit;font-size:10pt;"><span>15%</span></span><span style="font-family:inherit;font-size:10pt;"> of Spectrum Brands, a publicly traded global consumer products company on the NYSE (NYSE: SPB), and we reflected this investment at fair value based on quoted market prices. In September 2019, our Board of Directors approved a distribution to stockholders of these Spectrum Brands shares. We distributed </span><span style="font-family:inherit;font-size:10pt;"><span>7,514,477</span></span><span style="font-family:inherit;font-size:10pt;"> Spectrum Brands shares through a special pro rata dividend effective on October 11, 2019 to stockholders of record as of the close of business on September 30, 2019. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">We own approximately </span><span style="font-family:inherit;font-size:10pt;"><span>42%</span></span><span style="font-family:inherit;font-size:10pt;"> of the common shares of Linkem, as well as convertible preferred shares which, if converted, would increase our ownership to approximately </span><span style="font-family:inherit;font-size:10pt;"><span>54%</span></span><span style="font-family:inherit;font-size:10pt;"> of Linkem's common equity at </span><span style="font-family:inherit;font-size:10pt;">November 30, 2019</span><span style="font-family:inherit;font-size:10pt;">. Linkem provides residential broadband services in Italy using LTE technologies deployed over the 3.5 GHz spectrum band. Linkem is accounted for under the equity method. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Vitesse Energy Finance is our </span><span style="font-family:inherit;font-size:10pt;"><span>97%</span></span><span style="font-family:inherit;font-size:10pt;"> owned consolidated subsidiary that acquires and invests in non-operated working interests and royalties predominantly in the Bakken Shale oil field in North Dakota. JETX Energy is our </span><span style="font-family:inherit;font-size:10pt;"><span>98%</span></span><span style="font-family:inherit;font-size:10pt;"> owned consolidated subsidiary that currently has non-operated working interests and acreage in east Texas.</span></div><div style="line-height:120%;padding-bottom:16px;padding-top:16px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">We invested </span><span style="font-family:inherit;font-size:10pt;"><span>$9.0 million</span></span><span style="font-family:inherit;font-size:10pt;"> in 2013 in The We Company, which creates collaborative office communities, and have received </span><span style="font-family:inherit;font-size:10pt;"><span>$31.0 million</span></span><span style="font-family:inherit;font-size:10pt;"> in cash to date. We own less than </span><span style="font-family:inherit;font-size:10pt;"><span>1%</span></span><span style="font-family:inherit;font-size:10pt;"> of The We Company. Our interest in The We Company is reflected in Trading assets in our financial statements at fair value. </span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Through June 30, 2019, we owned approximately </span><span style="font-family:inherit;font-size:10pt;"><span>70%</span></span><span style="font-family:inherit;font-size:10pt;"> equity interest in HomeFed, which owns and develops residential and mixed use real estate properties. We accounted for our interest under the equity method. On July 1, 2019, we completed a merger with HomeFed by which we acquired the remaining common stock of HomeFed. From July 1, 2019, the results of HomeFed are reflected on a consolidated basis. In connection with the merger, HomeFed stockholders received </span><span style="font-family:inherit;font-size:10pt;"><span>two</span></span><span style="font-family:inherit;font-size:10pt;"> shares of our common stock for each share of HomeFed common stock. A total of </span><span style="font-family:inherit;font-size:10pt;"><span>9.3 million</span></span><span style="font-family:inherit;font-size:10pt;"> shares were issued, which were valued at </span><span style="font-family:inherit;font-size:10pt;"><span>$178.8 million</span></span><span style="font-family:inherit;font-size:10pt;"> at closing based on the market price of our common shares. As an offset to these issued shares, our Board of Directors authorized the repurchase of an additional </span><span style="font-family:inherit;font-size:10pt;"><span>9.25 million</span></span><span style="font-family:inherit;font-size:10pt;"> shares in the open market.</span></div><div style="line-height:120%;padding-bottom:16px;padding-top:16px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">The HomeFed acquisition was accounted for as a business combination. The fair value of the shares issued to acquire the remaining common shares of HomeFed implied an aggregate fair value of </span><span style="font-family:inherit;font-size:10pt;"><span>$596.4 million</span></span><span style="font-family:inherit;font-size:10pt;"> for </span><span style="font-family:inherit;font-size:10pt;"><span>100%</span></span><span style="font-family:inherit;font-size:10pt;"> of HomeFed's equity balance. In accordance with purchase accounting, we allocated the </span><span style="font-family:inherit;font-size:10pt;"><span>$596.4 million</span></span><span style="font-family:inherit;font-size:10pt;"> fair value for </span><span style="font-family:inherit;font-size:10pt;"><span>100%</span></span><span style="font-family:inherit;font-size:10pt;"> of HomeFed to its assets, liabilities and noncontrolling interests. We recorded </span><span style="font-family:inherit;font-size:10pt;"><span>$101.7 million</span></span><span style="font-family:inherit;font-size:10pt;"> of cash, </span><span style="font-family:inherit;font-size:10pt;"><span>$413.2 million</span></span><span style="font-family:inherit;font-size:10pt;"> of real estate, </span><span style="font-family:inherit;font-size:10pt;"><span>$198.3 million</span></span><span style="font-family:inherit;font-size:10pt;"> of investments in associated companies, </span><span style="font-family:inherit;font-size:10pt;"><span>$37.4 million</span></span><span style="font-family:inherit;font-size:10pt;"> of deferred tax assets, </span><span style="font-family:inherit;font-size:10pt;"><span>$15.3 million</span></span><span style="font-family:inherit;font-size:10pt;"> of goodwill and intangibles, </span><span style="font-family:inherit;font-size:10pt;"><span>$6.6 million</span></span><span style="font-family:inherit;font-size:10pt;"> of other assets, </span><span style="font-family:inherit;font-size:10pt;"><span>$125.5 million</span></span><span style="font-family:inherit;font-size:10pt;"> of long-term debt, </span><span style="font-family:inherit;font-size:10pt;"><span>$46.7 million</span></span><span style="font-family:inherit;font-size:10pt;"> of payables, expense accruals and other liabilities and $</span><span style="font-family:inherit;font-size:10pt;"><span>3.9 million</span></span><span style="font-family:inherit;font-size:10pt;"> of noncontrolling interests. In addition, associated with the acquisition, we also recorded </span><span style="font-family:inherit;font-size:10pt;"><span>$32.4 million</span></span><span style="font-family:inherit;font-size:10pt;"> of goodwill generated by the establishment of </span><span style="font-family:inherit;font-size:10pt;"><span>$32.4 million</span></span><span style="font-family:inherit;font-size:10pt;"> of deferred tax liabilities related to allocated value exceeding the tax basis of some of the HomeFed net assets. The estimated weighted average useful lives for the amortizable intangibles were </span><span style="font-family:inherit;font-size:10pt;"><span>4 years</span></span><span style="font-family:inherit;font-size:10pt;"> at time of acquisition. Our allocation of the acquisition price is based on our estimate of fair value for each of the acquired assets and liabilities, which were developed primarily utilizing discounted cash flow models. In connection with the acquisition of the remaining interest of HomeFed, we recognized a </span><span style="font-family:inherit;font-size:10pt;"><span>$72.1 million</span></span><span style="font-family:inherit;font-size:10pt;"> non-cash pre-tax gain in Other revenues on the revaluation of our </span><span style="font-family:inherit;font-size:10pt;"><span>70%</span></span><span style="font-family:inherit;font-size:10pt;"> interest in HomeFed to fair value. The fair value of our </span><span style="font-family:inherit;font-size:10pt;"><span>70%</span></span><span style="font-family:inherit;font-size:10pt;"> interest in HomeFed was based on the implied </span><span style="font-family:inherit;font-size:10pt;"><span>$596.4 million</span></span><span style="font-family:inherit;font-size:10pt;"> equity value for </span><span style="font-family:inherit;font-size:10pt;"><span>100%</span></span><span style="font-family:inherit;font-size:10pt;"> of HomeFed.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Idaho Timber is our consolidated subsidiary engaged in the manufacture and distribution of various wood products.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Our investment in FXCM and associated companies consist of a senior secured term loan due February 15, 2021, (</span><span style="font-family:inherit;font-size:10pt;"><span>$71.6 million</span></span><span style="font-family:inherit;font-size:10pt;"> principal outstanding at </span><span style="font-family:inherit;font-size:10pt;">November 30, 2019</span><span style="font-family:inherit;font-size:10pt;">); a </span><span style="font-family:inherit;font-size:10pt;"><span>50%</span></span><span style="font-family:inherit;font-size:10pt;"> voting interest in FXCM and rights to a majority of all distributions in respect of the equity of FXCM.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">Garcadia was an equity method joint venture that owned and operated automobile dealerships. During the third quarter of 2018, we sold our equity interests in Garcadia and our associated real estate to our former partners, the Garff family, for </span><span style="font-family:inherit;font-size:10pt;"><span>$417.2 million</span></span><span style="font-family:inherit;font-size:10pt;"> in cash. The pre-tax gain recognized as a result of this transaction, </span><span style="font-family:inherit;font-size:10pt;"><span>$221.7 million</span></span><span style="font-family:inherit;font-size:10pt;"> during the third quarter of 2018, is classified as Other revenue.</span></div>
CY2019Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	9250000	shares
CY2019	us-gaap	Derivatives Methods Of Accounting Hedging Derivatives DerivativesMethodsOfAccountingHedgingDerivatives	<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Hedge Accounting</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">We apply hedge accounting using interest rate swaps designated as fair value hedges of changes in the benchmark interest rate of fixed rate senior long-term debt. The interest rate swaps are included as derivative contracts in Trading assets and Trading liabilities in the Consolidated Statements of Financial Condition. We use regression analysis to perform ongoing prospective and retrospective assessments of the effectiveness of these hedging relationships. A hedging relationship is deemed effective if the change in fair value of the interest rate swap and the change in the fair value of the long-term debt due to changes in the benchmark interest rate offset within a range of </span><span style="font-family:inherit;font-size:10pt;"><span>80%</span></span><span style="font-family:inherit;font-size:10pt;"> to </span><span style="font-family:inherit;font-size:10pt;"><span>125%</span></span><span style="font-family:inherit;font-size:10pt;">. The impact of valuation adjustments related to Jefferies Group's own credit spreads and counterparty credit spreads are included in the assessment of effectiveness.</span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">For qualifying fair value hedges of benchmark interest rates, the change in the fair value of the derivative and the change in fair value of the long-term debt provide offset of one another and, together with any resulting ineffectiveness, are recorded in Interest expense. See Note 6 for further information.</span></div>
CY2019Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	3011000000.0	USD
CY2018Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	3223700000	USD
CY2019Q4	us-gaap	Receivables From Customers ReceivablesFromCustomers	1490900000	USD
CY2018Q4	us-gaap	Receivables From Customers ReceivablesFromCustomers	2017100000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	6200000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	385000000.0	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	351000000.0	USD
CY2019Q4	us-gaap	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	2621700000	USD
CY2018Q4	us-gaap	Payables To Broker Dealers And Clearing Organizations PayablesToBrokerDealersAndClearingOrganizations	2465600000	USD
CY2019Q4	us-gaap	Payables To Customers PayablesToCustomers	3808600000	USD
CY2018Q4	us-gaap	Payables To Customers PayablesToCustomers	3176700000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	1563152000	USD
	us-gaap	Interest Paid Net InterestPaidNet	1377781000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	1120191000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	24587000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	37559000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	15361000	USD
CY2019	jef	Purchaseof Common Sharesfor Treasury Settled After Current Periodend Date PurchaseofCommonSharesforTreasurySettledAfterCurrentPeriodendDate	1200000	USD
	jef	Purchaseof Common Sharesfor Treasury Settled After Current Periodend Date PurchaseofCommonSharesforTreasurySettledAfterCurrentPeriodendDate	17600000	USD
CY2019	us-gaap	Fiscal Period FiscalPeriod	<div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;"><br/></span></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;">On October 2, 2018, our Board of Directors approved a change to our fiscal year end from a calendar year basis to a fiscal year ending on November 30. Our 2018 fiscal year consists of the eleven month transition period beginning January 1, 2018 through November 30, 2018. Financial statements for 2017 continue to be presented on the basis of our previous calendar year end. </span></div>
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	3764034000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	4031333000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	3524957000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	3336359000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	57023000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-76864000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	296100000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	618110000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19008000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	195550000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	277092000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	422560000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	773984000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	267321000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	37263000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	78506000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1022318000	USD
	us-gaap	Net Income Loss NetIncomeLoss	610277000	USD
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.82
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.14
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	2.11
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.51
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.93
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.65
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.81
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.13
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	2.09
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.50
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.90
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.63
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	1433197000	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	418408000	USD
CY2019Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	1433197000	USD
CY2019Q4	jef	Financial Instruments Owned Trading Assetsat Fair Value Excluding Investments Basedon Net Asset Value FinancialInstrumentsOwnedTradingAssetsatFairValueExcludingInvestmentsBasedonNetAssetValue	16308807000	USD
CY2019Q4	us-gaap	Federal Funds Sold And Securities Borrowed Or Purchased Under Agreements To Resell Fair Value Disclosure FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure	25000000	USD
CY2019Q4	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	9500000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	1632178000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	527205000	USD
CY2019Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	1632178000	USD
CY2019Q4	us-gaap	Trading Liabilities Fair Value Disclosure TradingLiabilitiesFairValueDisclosure	10532460000	USD
CY2019Q4	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	20981000	USD
CY2019Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1215285000	USD
CY2019Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	9500000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2413931000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	166775000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2413931000	USD
CY2018Q4	jef	Financial Instruments Owned Trading Assetsat Fair Value Excluding Investments Basedon Net Asset Value FinancialInstrumentsOwnedTradingAssetsatFairValueExcludingInvestmentsBasedonNetAssetValue	17068897000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1409886000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2513050000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1127653000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2513050000	USD
CY2018Q4	us-gaap	Trading Liabilities Fair Value Disclosure TradingLiabilitiesFairValueDisclosure	9478946000	USD
CY2018Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	686170000	USD
CY2019Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	14621000	USD
CY2018Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	20996000	USD
CY2019	jef	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Comprehensive Income FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherComprehensiveIncome	-11000000.0	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	68600000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	26700000	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-217000000.0	USD
CY2019	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	44500000	USD
	jef	Fair Value Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Other Comprehensive Income FairValueLiabilitiesMeasuredOnRecurringBasisChangeInUnrealizedGainLossIncludedInOtherComprehensiveIncome	19400000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	57800000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	12300000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	79200000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	33600000	USD
CY2017	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	38200000	USD
CY2017	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	54900000	USD
CY2017	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	5900000	USD
CY2017	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	1700000	USD
CY2019Q4	jef	Excluded Securities From Unobservable Quantitative Information Assets ExcludedSecuritiesFromUnobservableQuantitativeInformationAssets	79900000	USD
CY2018Q4	jef	Excluded Securities From Unobservable Quantitative Information Assets ExcludedSecuritiesFromUnobservableQuantitativeInformationAssets	40300000	USD
CY2019Q4	jef	Excluded Securitiesfrom Unobservable Quantitative Information Liabilities ExcludedSecuritiesfromUnobservableQuantitativeInformationLiabilities	400000	USD
CY2018Q4	jef	Excluded Securitiesfrom Unobservable Quantitative Information Liabilities ExcludedSecuritiesfromUnobservableQuantitativeInformationLiabilities	500000	USD
CY2019	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-2072000	USD
	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	-3856000	USD
CY2017	us-gaap	Fair Value Option Credit Risk Gains Losses On Assets FairValueOptionCreditRiskGainsLossesOnAssets	22088000	USD
CY2019Q4	us-gaap	Fair Value Option Aggregate Differences Loans And Long Term Receivables FairValueOptionAggregateDifferencesLoansAndLongTermReceivables	1546516000	USD
CY2018Q4	us-gaap	Fair Value Option Aggregate Differences Loans And Long Term Receivables FairValueOptionAggregateDifferencesLoansAndLongTermReceivables	961554000	USD
CY2019Q4	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due Aggregated Difference FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDueAggregatedDifference	197215000	USD
CY2018Q4	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due Aggregated Difference FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDueAggregatedDifference	158392000	USD
CY2019Q4	jef	Fair Value Option Aggregate Differences Longterm Debt And Shortterm Borrowing FairValueOptionAggregateDifferencesLongtermDebtAndShorttermBorrowing	74408000	USD
CY2018Q4	jef	Fair Value Option Aggregate Differences Longterm Debt And Shortterm Borrowing FairValueOptionAggregateDifferencesLongtermDebtAndShorttermBorrowing	114669000	USD
CY2019Q4	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due Aggregate Difference FairValueOptionLoansHeldAsAssets90DaysOrMorePastDueAggregateDifference	22200000	USD
CY2018Q4	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due Aggregate Difference FairValueOptionLoansHeldAsAssets90DaysOrMorePastDueAggregateDifference	20500000	USD
CY2019Q4	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDue	127000000.0	USD
CY2018Q4	jef	Fair Value Option Loans Held As Assets Aggregate Amount In Nonaccrual Status And Or90 Days Or Greater Past Due FairValueOptionLoansHeldAsAssetsAggregateAmountInNonaccrualStatusAndOr90DaysOrGreaterPastDue	105300000	USD
CY2019Q4	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue	24800000	USD
CY2018Q4	us-gaap	Fair Value Option Loans Held As Assets90 Days Or More Past Due FairValueOptionLoansHeldAsAssets90DaysOrMorePastDue	19400000	USD
CY2019Q4	us-gaap	Derivative Assets DerivativeAssets	418408000	USD
CY2019Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	527205000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	166775000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1127653000	USD
CY2019	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	-2546000	USD
	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	1824000	USD
CY2017	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	6033000	USD
CY2019	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-294871000	USD
	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-177436000	USD
CY2017	us-gaap	Gain Loss On Derivative Instruments Net Pretax GainLossOnDerivativeInstrumentsNetPretax	-319318000	USD
CY2019Q4	jef	Otc Derivative Assets Having Maturity Period Of Zero To Twelve Months OtcDerivativeAssetsHavingMaturityPeriodOfZeroToTwelveMonths	200377000	USD
CY2019Q4	jef	Otc Derivative Assets Having Maturity Period Of One To Five Years OtcDerivativeAssetsHavingMaturityPeriodOfOneToFiveYears	216814000	USD
CY2019Q4	jef	Otc Derivative Assets Having Maturity Period Of Greater Than Five Years OtcDerivativeAssetsHavingMaturityPeriodOfGreaterThanFiveYears	149796000	USD
CY2019Q4	jef	Otc Derivative Assets Cross Maturity Netting OtcDerivativeAssetsCrossMaturityNetting	27506000	USD
CY2019Q4	jef	Consolidated Otc Derivative Assets Net Of Crossmaturity Netting ConsolidatedOtcDerivativeAssetsNetOfCrossmaturityNetting	539481000	USD
CY2019Q4	jef	Derivative Assets Cross Product Counterparty Netting DerivativeAssetsCrossProductCounterpartyNetting	32208000	USD
CY2019Q4	jef	Otc Derivative Assets Included In Financial Instruments Owned OtcDerivativeAssetsIncludedInFinancialInstrumentsOwned	507273000	USD
CY2019Q4	jef	Exchange Traded Derivative Assets And Other Credit Agreements ExchangeTradedDerivativeAssetsAndOtherCreditAgreements	37200000	USD
CY2019Q4	jef	Cash Collateral Received CashCollateralReceived	126100000	USD
CY2019Q4	jef	Otc Derivative Liabilities Having Maturity Period Of Zero To Twelve Months OtcDerivativeLiabilitiesHavingMaturityPeriodOfZeroToTwelveMonths	124924000	USD
CY2019Q4	jef	Otc Derivative Liabilities Having Maturity Period Of One To Five Years OtcDerivativeLiabilitiesHavingMaturityPeriodOfOneToFiveYears	321723000	USD
CY2019Q4	jef	Otc Derivative Liabilities Having Maturity Period Of Greater Than Five Years OtcDerivativeLiabilitiesHavingMaturityPeriodOfGreaterThanFiveYears	189575000	USD
CY2019Q4	jef	Otc Derivative Liabilities Cross Maturity Netting OtcDerivativeLiabilitiesCrossMaturityNetting	27506000	USD
CY2019Q4	jef	Consolidated Otc Derivative Liabilities Net Of Crossmaturity Netting ConsolidatedOtcDerivativeLiabilitiesNetOfCrossmaturityNetting	608716000	USD
CY2019Q4	jef	Derivative Liabilities Cross Product Counterparty Netting DerivativeLiabilitiesCrossProductCounterpartyNetting	32208000	USD
CY2019Q4	jef	Otc Derivative Liabilities Included In Trading Liabilities OtcDerivativeLiabilitiesIncludedInTradingLiabilities	576508000	USD
CY2019Q4	jef	Exchange Traded Derivative Liabilities And Other Credit Agreements ExchangeTradedDerivativeLiabilitiesAndOtherCreditAgreements	275700000	USD
CY2019Q4	jef	Cash Collateral Pledged CashCollateralPledged	325000000.0	USD
CY2019Q4	jef	Fair Value Of Otc Derivatives Assets Counterparty Credit Quality FairValueOfOtcDerivativesAssetsCounterpartyCreditQuality	127355000	USD
CY2019Q4	jef	Fair Value Of Otc Derivatives Assets Counterparty Credit Quality Bbb Minus To Bbb Plus FairValueOfOtcDerivativesAssetsCounterpartyCreditQualityBbbMinusToBbbPlus	31536000	USD
CY2019Q4	jef	Fair Value Of Otc Derivatives Assets Counterparty Credit Quality Bb Plus Or Lower FairValueOfOtcDerivativesAssetsCounterpartyCreditQualityBbPlusOrLower	193338000	USD
CY2019Q4	jef	Fair Value Of Over Counter Derivatives Assets Counterparty Credit Quality Unrated FairValueOfOverCounterDerivativesAssetsCounterpartyCreditQualityUnrated	155044000	USD
CY2019Q4	jef	Otc Derivative Assets Included In Financial Instruments Owned OtcDerivativeAssetsIncludedInFinancialInstrumentsOwned	507273000	USD
CY2019Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	42900000	USD
CY2018Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	93500000	USD
CY2019Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	3100000	USD
CY2018Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	61500000	USD
CY2019Q4	jef	Collateral Received Aggregate Fair Value CollateralReceivedAggregateFairValue	114100000	USD
CY2018Q4	jef	Collateral Received Aggregate Fair Value CollateralReceivedAggregateFairValue	91500000	USD
CY2019Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	154000000.0	USD
CY2018Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	123300000	USD
CY2019Q4	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	1525140000	USD
CY2019Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	18756917000	USD
CY2019Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	9500000	USD
CY2019Q4	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	20291557000	USD
CY2018Q4	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	1838688000	USD
CY2018Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	17193486000	USD
CY2018Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	0	USD
CY2018Q4	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	19032174000	USD
CY2019Q4	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	1525140000	USD
CY2019Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	18756917000	USD
CY2019Q4	us-gaap	Obligation To Return Securities Received As Collateral ObligationToReturnSecuritiesReceivedAsCollateral	9500000	USD
CY2019Q4	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	20291557000	USD
CY2018Q4	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	1838688000	USD
CY2018Q4	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	17193486000	USD
CY2018Q4	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	19032174000	USD
CY2019Q4	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	28700000000	USD
CY2018Q4	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	23100000000	USD
CY2019Q4	us-gaap	Securities Borrowed Gross SecuritiesBorrowedGross	7624642000	USD
CY2019Q4	us-gaap	Securities Borrowed Liability SecuritiesBorrowedLiability	0	USD
CY2019Q4	us-gaap	Securities Borrowed SecuritiesBorrowed	7624642000	USD
CY2019Q4	us-gaap	Securities Borrowed Collateral Obligation To Return Cash SecuritiesBorrowedCollateralObligationToReturnCash	361394000	USD
CY2019Q4	us-gaap	Securities Borrowed Collateral Obligation To Return Securities SecuritiesBorrowedCollateralObligationToReturnSecurities	1479433000	USD
CY2019Q4	us-gaap	Securities Borrowed Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesBorrowedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	5783815000	USD
CY2019Q4	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	15551845000	USD
CY2019Q4	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	11252247000	USD
CY2019Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	4299598000	USD
CY2019Q4	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Cash SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnCash	291316000	USD
CY2019Q4	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities	3929977000	USD
CY2019Q4	us-gaap	Securities Purchased Under Agreements To Resell Amount Offset Against Collateral SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral	78305000	USD
CY2019Q4	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	1525140000	USD
CY2019Q4	us-gaap	Securities Loaned Asset SecuritiesLoanedAsset	0	USD
CY2019Q4	us-gaap	Securities Loaned SecuritiesLoaned	1525140000	USD
CY2019Q4	us-gaap	Securities Loaned Collateral Right To Reclaim Cash SecuritiesLoanedCollateralRightToReclaimCash	361394000	USD
CY2019Q4	us-gaap	Securities Loaned Collateral Right To Reclaim Securities SecuritiesLoanedCollateralRightToReclaimSecurities	970799000	USD
CY2019Q4	us-gaap	Securities Loaned Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesLoanedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	192947000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	18756917000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	11252247000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	7504670000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	291316000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	6663807000	USD
CY2019Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	549547000	USD
CY2018Q4	us-gaap	Securities Borrowed Gross SecuritiesBorrowedGross	6538212000	USD
CY2018Q4	us-gaap	Securities Borrowed Liability SecuritiesBorrowedLiability	0	USD
CY2018Q4	us-gaap	Securities Borrowed SecuritiesBorrowed	6538212000	USD
CY2018Q4	us-gaap	Securities Borrowed Collateral Obligation To Return Cash SecuritiesBorrowedCollateralObligationToReturnCash	468778000	USD
CY2018Q4	us-gaap	Securities Borrowed Collateral Obligation To Return Securities SecuritiesBorrowedCollateralObligationToReturnSecurities	1193986000	USD
CY2018Q4	us-gaap	Securities Borrowed Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesBorrowedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	4875448000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	11336175000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	8550417000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	2785758000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Cash SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnCash	609225000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities	2126730000	USD
CY2018Q4	us-gaap	Securities Purchased Under Agreements To Resell Amount Offset Against Collateral SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral	49803000	USD
CY2018Q4	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	1838688000	USD
CY2018Q4	us-gaap	Securities Loaned Asset SecuritiesLoanedAsset	0	USD
CY2018Q4	us-gaap	Securities Loaned SecuritiesLoaned	1838688000	USD
CY2018Q4	us-gaap	Securities Loaned Collateral Right To Reclaim Cash SecuritiesLoanedCollateralRightToReclaimCash	468778000	USD
CY2018Q4	us-gaap	Securities Loaned Collateral Right To Reclaim Securities SecuritiesLoanedCollateralRightToReclaimSecurities	1343704000	USD
CY2018Q4	us-gaap	Securities Loaned Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesLoanedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	26206000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	17193486000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	8550417000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8643069000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	609225000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	7070967000	USD
CY2018Q4	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	962877000	USD
CY2019Q4	jef	Securities Borrowed Asset Net Subject To Review SecuritiesBorrowedAssetNetSubjectToReview	5683400000	USD
CY2019Q4	jef	Securities Borrowed Asset Collateral Received Subject To Review SecuritiesBorrowedAssetCollateralReceivedSubjectToReview	5523600000	USD
CY2019Q4	jef	Securities Sold Under Agreements To Repurchase Net Amount Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseNetAmountSubjectToReview	439700000	USD
CY2019Q4	jef	Securities Sold Under Agreements To Repurchase Collateral Pledged Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseCollateralPledgedSubjectToReview	447500000	USD
CY2018Q4	jef	Securities Borrowed Asset Net Subject To Review SecuritiesBorrowedAssetNetSubjectToReview	4825700000	USD
CY2018Q4	jef	Securities Borrowed Asset Collateral Received Subject To Review SecuritiesBorrowedAssetCollateralReceivedSubjectToReview	4711700000	USD
CY2018Q4	jef	Securities Sold Under Agreements To Repurchase Net Amount Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseNetAmountSubjectToReview	931700000	USD
CY2018Q4	jef	Securities Sold Under Agreements To Repurchase Collateral Pledged Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseCollateralPledgedSubjectToReview	963600000	USD
CY2019Q4	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	796800000	USD
CY2018Q4	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	708000000.0	USD
CY2019	jef	Assets Transferred Due To Securitization AssetsTransferredDueToSecuritization	4780900000	USD
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CY2019	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	4852800000	USD
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CY2017	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	4594500000	USD
CY2019	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	48300000	USD
	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	48500000	USD
CY2017	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	28700000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Amortized Cost Basis AvailableForSaleDebtSecuritiesAmortizedCostBasis	1411762000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	378000	USD
CY2018Q4	us-gaap	Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	2254000	USD
CY2018Q4	us-gaap	Available For Sale Securities Debt Securities AvailableForSaleSecuritiesDebtSecurities	1409886000	USD
CY2019Q4	us-gaap	Other Investment Not Readily Marketable Fair Value OtherInvestmentNotReadilyMarketableFairValue	172800000	USD
CY2018Q4	us-gaap	Other Investment Not Readily Marketable Fair Value OtherInvestmentNotReadilyMarketableFairValue	230000000.0	USD
CY2019	us-gaap	Impairment Of Investments ImpairmentOfInvestments	5500000	USD
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CY2019	jef	Realized Gain Loss On Other Investments RealizedGainLossOnOtherInvestments	13800000	USD
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CY2019Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets VariableInterestEntityNonconsolidatedCarryingAmountAssets	1107900000	USD
CY2019Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	600000	USD
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CY2019Q4	jef	Variable Interest Entity Assetsof Non Consolidated Vie VariableInterestEntityAssetsofNonConsolidatedVie	19526200000	USD
CY2018Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets VariableInterestEntityNonconsolidatedCarryingAmountAssets	746400000	USD
CY2018Q4	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	0	USD
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CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2790128000	USD
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CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2790128000	USD
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CY2019	jef	Contract With Customer Revenue Relatedto Performance Obligations Satisfiedin Previous Periods ContractWithCustomerRevenueRelatedtoPerformanceObligationsSatisfiedinPreviousPeriods	27600000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2066829000	USD
CY2019	us-gaap	Investment Banking Revenue InvestmentBankingRevenue	176300000	USD
CY2018Q4	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	1646700000	USD
CY2018Q4	jef	Variable Interest Entity Assetsof Non Consolidated Vie VariableInterestEntityAssetsofNonConsolidatedVie	12382400000	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2417332000	USD
CY2019	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	202995000	USD
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CY2019	jef	Equity Method Investments Other Activity Net EquityMethodInvestmentsOtherActivityNet	-740582000	USD
CY2019Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1652957000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2066829000	USD
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CY2016Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2125098000	USD
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CY2017	us-gaap	Investment Banking Revenue InvestmentBankingRevenue	327900000	USD
CY2019	us-gaap	Loan Processing Fee LoanProcessingFee	27600000	USD
	us-gaap	Loan Processing Fee LoanProcessingFee	56600000	USD
CY2017	us-gaap	Loan Processing Fee LoanProcessingFee	2400000	USD
CY2019	jef	Placement Agent Fees PlacementAgentFees	6000000.0	USD
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CY2017	jef	Placement Agent Fees PlacementAgentFees	6100000	USD
CY2019	jef	Service Fee Income ServiceFeeIncome	60800000	USD
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CY2017	jef	Service Fee Income ServiceFeeIncome	50700000	USD
CY2019Q4	jef	Number Of Separate Tax Lots NumberOfSeparateTaxLots	15	Taxlot
CY2019Q4	jef	Number Of Development Sites NumberOfDevelopmentSites	2	Sites
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CY2019	jef	Revenues Associated With Distribution Services RevenuesAssociatedWithDistributionServices	21700000	USD
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CY2019Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	263700000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	250600000	USD
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CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	14982000	USD
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CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	11215000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	9959000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	8703000	USD
CY2019Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	12800000	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	14200000	USD
CY2019	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	13000000.0	USD
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CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	17050564000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	10146142000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	11752273000	USD
CY2019Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	209518000	USD
CY2018Q4	us-gaap	Equity Method Investment Summarized Financial Information Minority Interest EquityMethodInvestmentSummarizedFinancialInformationMinorityInterest	154963000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	10589489000	USD
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CY2017	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	4883063000	USD
CY2019	us-gaap	Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations Before Extraordinary Items EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems	732575000	USD
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CY2017	us-gaap	Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations Before Extraordinary Items EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems	503489000	USD
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CY2019	jef	Income Losses Related To Associated Companies Including Investments Accounted For Under Fair Value Option IncomeLossesRelatedToAssociatedCompaniesIncludingInvestmentsAccountedForUnderFairValueOption	248693000	USD
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CY2017	jef	Income Losses Related To Associated Companies Including Investments Accounted For Under Fair Value Option IncomeLossesRelatedToAssociatedCompaniesIncludingInvestmentsAccountedForUnderFairValueOption	34494000	USD
CY2019Q4	us-gaap	Retained Earnings Undistributed Earnings From Equity Method Investees RetainedEarningsUndistributedEarningsFromEquityMethodInvestees	180800000	USD
CY2019Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	182954000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	188291000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	1739980000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	1701840000	USD
CY2019Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1922934000	USD
CY2018Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1890131000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	14600000	USD
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CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12900000	USD
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.10
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.125
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	10600000	USD
CY2019Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	4800000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	4700000	USD
CY2019	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	4100000	USD
CY2019Q4	jef	Options Issued To Purchased Number Of Shares OptionsIssuedToPurchasedNumberOfShares	2	shares
CY2019Q4	jef	Restricted Cash Awards Compensation Cost Not Yet Recognized RestrictedCashAwardsCompensationCostNotYetRecognized	444300000	USD
CY2019Q4	jef	Restricted Cash Awards Compensation Cost Not Yet Recognized Period For Recognition RestrictedCashAwardsCompensationCostNotYetRecognizedPeriodForRecognition	P3Y
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	49800000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	48200000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	48400000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12900000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	12200000	USD
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CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	80400000	USD
CY2019Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y
CY2019Q4	jef	Other Shares Issuable OtherSharesIssuable	992000	shares
CY2019Q4	jef	Potential Maximum Increase To Common Shares Outstanding From Restricted Stock And Other Shares PotentialMaximumIncreaseToCommonSharesOutstandingFromRestrictedStockAndOtherShares	23122000	shares
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	83197000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	2300000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	548490000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	387492000	USD
CY2019Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0324
CY2018Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0308
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	8337061000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	7617563000	USD
CY2019Q4	jef	Assets Pledged For Indebtedness AssetsPledgedForIndebtedness	1226500000	USD
CY2019Q4	us-gaap	Secured Debt SecuredDebt	581100000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	551200000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1088700000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	32400000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1454000000.0	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	696400000	USD
CY2019Q4	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	26600000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	19800000	USD
CY2017Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0625
CY2017Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.10
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-10000000	USD
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CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1060000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	53211000	USD
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CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	33132000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	11026000	USD
	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	11077000	USD
CY2019	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2019Q1	jef	Lodged Tax Effect LodgedTaxEffect	544600000	USD
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CY2019	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	8800000	USD
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CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7600000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2790128000	USD
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CY2019	jef	Revenue Other Sources RevenueOtherSources	2568528000	USD
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CY2019	us-gaap	Revenues Revenues	5358656000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	14597000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	54237000	USD
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CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	46669000	USD
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CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	586014000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-73482000	USD
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CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1452000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-3324000	USD
	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-5943000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	8151000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6391000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-39508000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	595617000	USD
CY2019	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544583000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-483955000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19008000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	642286000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	495566000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	284177000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	535955000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-16958000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	11923000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	70547000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	478608000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	296100000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	606502000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	100508000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	62181000	USD
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	212276000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	25648000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.054
	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	12391000	USD
	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.042
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	14115000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.023
CY2019	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544583000	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Recognition Of Accumulated Other Comprehensive Income Lodged Taxes Percent EffectiveIncomeTaxRateReconciliationRecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxesPercent	1.138
CY2019	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	4518000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.009
	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	1823000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.006
CY2017	us-gaap	Income Tax Reconciliation Foreign Income Tax Rate Differential IncomeTaxReconciliationForeignIncomeTaxRateDifferential	-11577000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.019
CY2019	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-19993000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.042
	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-48058000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.162
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0
CY2019	jef	Effective Income Tax Rate Reconciliation Permanent Differences Amount EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount	10545000	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Permanent Differences Percent EffectiveIncomeTaxRateReconciliationPermanentDifferencesPercent	0.022
	jef	Effective Income Tax Rate Reconciliation Permanent Differences Amount EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount	12331000	USD
	jef	Effective Income Tax Rate Reconciliation Permanent Differences Percent EffectiveIncomeTaxRateReconciliationPermanentDifferencesPercent	0.042
CY2017	jef	Effective Income Tax Rate Reconciliation Permanent Differences Amount EffectiveIncomeTaxRateReconciliationPermanentDifferencesAmount	4933000	USD
CY2017	jef	Effective Income Tax Rate Reconciliation Permanent Differences Percent EffectiveIncomeTaxRateReconciliationPermanentDifferencesPercent	0.008
CY2019	jef	Effective Income Tax Reconciliation Foreign Tax Credits Amount EffectiveIncomeTaxReconciliationForeignTaxCreditsAmount	-5012000	USD
CY2019	jef	Effective Income Tax Reconciliation Foreign Tax Credits Percent EffectiveIncomeTaxReconciliationForeignTaxCreditsPercent	-0.010
	jef	Effective Income Tax Reconciliation Foreign Tax Credits Amount EffectiveIncomeTaxReconciliationForeignTaxCreditsAmount	-9046000	USD
	jef	Effective Income Tax Reconciliation Foreign Tax Credits Percent EffectiveIncomeTaxReconciliationForeignTaxCreditsPercent	-0.031
CY2017	jef	Effective Income Tax Reconciliation Foreign Tax Credits Amount EffectiveIncomeTaxReconciliationForeignTaxCreditsAmount	-32974000	USD
CY2017	jef	Effective Income Tax Reconciliation Foreign Tax Credits Percent EffectiveIncomeTaxReconciliationForeignTaxCreditsPercent	-0.054
CY2019	jef	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate Remeasurement Of Deferred Tax Asset Amount EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateRemeasurementOfDeferredTaxAssetAmount	0	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate Remeasurement Of Deferred Tax Asset Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateRemeasurementOfDeferredTaxAssetPercent	0
	jef	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate Remeasurement Of Deferred Tax Asset Amount EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateRemeasurementOfDeferredTaxAssetAmount	5673000	USD
	jef	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate Remeasurement Of Deferred Tax Asset Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateRemeasurementOfDeferredTaxAssetPercent	0.019
CY2017	jef	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate Remeasurement Of Deferred Tax Asset Amount EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateRemeasurementOfDeferredTaxAssetAmount	415000000	USD
CY2017	jef	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate Remeasurement Of Deferred Tax Asset Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateRemeasurementOfDeferredTaxAssetPercent	0.684
CY2019	jef	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	-6708000	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsPercent	-0.014
	jef	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	2590000	USD
	jef	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsPercent	0.009
CY2017	jef	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Amount EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsAmount	35500000	USD
CY2017	jef	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Transition Tax On Accumulated Foreign Earnings Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017TransitionTaxOnAccumulatedForeignEarningsPercent	0.059
CY2019	jef	Effective Income Tax Rate Reconciliation Base Erosion And Anti Abuse Tax Amount EffectiveIncomeTaxRateReconciliationBaseErosionAndAntiAbuseTaxAmount	-10000000	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Base Erosion And Anti Abuse Tax Percent EffectiveIncomeTaxRateReconciliationBaseErosionAndAntiAbuseTaxPercent	-0.021
	jef	Effective Income Tax Rate Reconciliation Base Erosion And Anti Abuse Tax Amount EffectiveIncomeTaxRateReconciliationBaseErosionAndAntiAbuseTaxAmount	10000000	USD
	jef	Effective Income Tax Rate Reconciliation Base Erosion And Anti Abuse Tax Percent EffectiveIncomeTaxRateReconciliationBaseErosionAndAntiAbuseTaxPercent	0.034
CY2017	jef	Effective Income Tax Rate Reconciliation Base Erosion And Anti Abuse Tax Amount EffectiveIncomeTaxRateReconciliationBaseErosionAndAntiAbuseTaxAmount	0	USD
CY2017	jef	Effective Income Tax Rate Reconciliation Base Erosion And Anti Abuse Tax Percent EffectiveIncomeTaxRateReconciliationBaseErosionAndAntiAbuseTaxPercent	0
CY2019	jef	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits Related To Prior Periods Amount EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsRelatedToPriorPeriodsAmount	-20512000	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Net Adjustment To Unrecognized Tax Benefits Related To Prior Periods Percent EffectiveIncomeTaxRateReconciliationNetAdjustmentToUnrecognizedTaxBenefitsRelatedToPriorPeriodsPercent	-0.043
	jef	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits Related To Prior Periods Amount EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsRelatedToPriorPeriodsAmount	-19783000	USD
	jef	Effective Income Tax Rate Reconciliation Net Adjustment To Unrecognized Tax Benefits Related To Prior Periods Percent EffectiveIncomeTaxRateReconciliationNetAdjustmentToUnrecognizedTaxBenefitsRelatedToPriorPeriodsPercent	-0.067
CY2017	jef	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits Related To Prior Periods Amount EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsRelatedToPriorPeriodsAmount	1553000	USD
CY2017	jef	Effective Income Tax Rate Reconciliation Net Adjustment To Unrecognized Tax Benefits Related To Prior Periods Percent EffectiveIncomeTaxRateReconciliationNetAdjustmentToUnrecognizedTaxBenefitsRelatedToPriorPeriodsPercent	0.003
CY2019	jef	Effective Income Tax Rate Reconciliation Distribution To Shareholders Amount EffectiveIncomeTaxRateReconciliationDistributionToShareholdersAmount	11996000	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Distribution To Shareholders Percent EffectiveIncomeTaxRateReconciliationDistributionToShareholdersPercent	0.025
CY2019	jef	Effective Income Tax Rate Reconciliation Business Acquisition Amount EffectiveIncomeTaxRateReconciliationBusinessAcquisitionAmount	-36779000	USD
CY2019	jef	Effective Income Tax Rate Reconciliation Business Acquisition Percent EffectiveIncomeTaxRateReconciliationBusinessAcquisitionPercent	-0.077
CY2019	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	6417000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.014
	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-11094000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	-0.038
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	3460000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Reconciling Items Percent EffectiveIncomeTaxRateReconciliationOtherReconcilingItemsPercent	0.005
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-483955000	USD
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-1.011
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	19008000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.064
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	642286000	USD
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.059
CY2019	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2019Q1	jef	Lodged Tax Effect LodgedTaxEffect	544600000	USD
CY2019Q2	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2019	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	197320000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	169020000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	148848000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	42306000	USD
	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	48083000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	18619000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	33007000	USD
	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	17521000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	10358000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	11006000	USD
	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	36324000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	8805000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1489000	USD
	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	980000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	260138000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	197320000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	169020000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	13100000	USD
	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-3100000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	9700000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	67200000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	54100000	USD
CY2019	jef	Expected Decrease In Unrecognized Tax Benefit Related To Uncertain Tax Position Over Next12 Months ExpectedDecreaseInUnrecognizedTaxBenefitRelatedToUncertainTaxPositionOverNext12Months	13000000.0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	48695000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	282650000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	260590000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	269788000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	91390000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	66272000	USD
CY2019Q4	jef	Deferred Tax Assets Securities Valuation Reserves DeferredTaxAssetsSecuritiesValuationReserves	92407000	USD
CY2018Q4	jef	Deferred Tax Assets Securities Valuation Reserves DeferredTaxAssetsSecuritiesValuationReserves	76931000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	213338000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	156751000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	706420000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	852392000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	18519000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	38512000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	687901000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	813880000	USD
CY2019Q4	jef	Deferred Tax Liabilities Amortization Of Intangible Assets DeferredTaxLiabilitiesAmortizationOfIntangibleAssets	68933000	USD
CY2018Q4	jef	Deferred Tax Liabilities Amortization Of Intangible Assets DeferredTaxLiabilitiesAmortizationOfIntangibleAssets	69970000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	76308000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Investment In Noncontrolled Affiliates DeferredTaxLiabilitiesInvestmentInNoncontrolledAffiliates	171006000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	80192000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	60115000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	225433000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	301091000	USD
CY2019Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	462468000	USD
CY2018Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	512789000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	462500000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	111400000	USD
	jef	Effective Income Tax Rate Reconciliation Base Erosion And Anti Abuse Tax Amount EffectiveIncomeTaxRateReconciliationBaseErosionAndAntiAbuseTaxAmount	10000000.0	USD
	jef	Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit	452100000	USD
	jef	Tax Cuts And Jobs Act Of2017 Changein Tax Rate Deferred Tax Asset Income Tax Expense TaxCutsAndJobsActOf2017ChangeinTaxRateDeferredTaxAssetIncomeTaxExpense	420700000	USD
	jef	Tax Cuts And Jobs Act Of2017 Transition Taxfor Accumulated Foreign Earnings Income Tax Expense TaxCutsAndJobsActOf2017TransitionTaxforAccumulatedForeignEarningsIncomeTaxExpense	31400000	USD
CY2019	jef	Asset Management Fees And Revenues AssetManagementFeesAndRevenues	26254000	USD
	jef	Asset Management Fees And Revenues AssetManagementFeesAndRevenues	28144000	USD
CY2017	jef	Asset Management Fees And Revenues AssetManagementFeesAndRevenues	28831000	USD
CY2019	jef	Dividend Net DividendNet	10740000	USD
	jef	Dividend Net DividendNet	5416000	USD
CY2017	jef	Dividend Net DividendNet	-452000	USD
CY2019	jef	Income From Equity Method Investments Classified As Other Revenues IncomeFromEquityMethodInvestmentsClassifiedAsOtherRevenues	85169000	USD
	jef	Income From Equity Method Investments Classified As Other Revenues IncomeFromEquityMethodInvestmentsClassifiedAsOtherRevenues	73975000	USD
CY2017	jef	Income From Equity Method Investments Classified As Other Revenues IncomeFromEquityMethodInvestmentsClassifiedAsOtherRevenues	75889000	USD
CY2019	jef	Revenue Of Oil And Gas Production And Development Business RevenueOfOilAndGasProductionAndDevelopmentBusiness	175169000	USD
	jef	Revenue Of Oil And Gas Production And Development Business RevenueOfOilAndGasProductionAndDevelopmentBusiness	127090000	USD
CY2017	jef	Revenue Of Oil And Gas Production And Development Business RevenueOfOilAndGasProductionAndDevelopmentBusiness	61541000	USD
CY2019	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	3255000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-939000	USD
CY2017	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	23028000	USD
CY2019	us-gaap	Other Operating Income OtherOperatingIncome	90247000	USD
	us-gaap	Other Operating Income OtherOperatingIncome	102938000	USD
CY2017	us-gaap	Other Operating Income OtherOperatingIncome	57715000	USD
CY2019	us-gaap	Taxes Other TaxesOther	41300000	USD
	us-gaap	Taxes Other TaxesOther	39900000	USD
CY2017	us-gaap	Taxes Other TaxesOther	32700000	USD
CY2019	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	900000000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	1600000000	USD
CY2017	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	400000000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	959593000	USD
	us-gaap	Net Income Loss NetIncomeLoss	1022318000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	167351000	USD
CY2019	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	5576000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	5107000	USD
CY2017	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	610000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	954017000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1017211000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	166741000	USD
CY2019	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-5000	USD
	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	28000	USD
CY2017	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	-14000	USD
CY2019	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	5103000	USD
	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	0	USD
CY2017	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	0	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	959115000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1017239000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	166727000	USD
CY2019	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	297796000	shares
	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	337817000	shares
CY2017	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	358482000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	310694000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	347261000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	368197000	shares
CY2019	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	4198000	shares
	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	0	shares
CY2017	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	0	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	317032000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	351275000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	370701000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1947600	shares
	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1724800	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1401000	shares
CY2019	jef	Dividends On Participating Securities DividendsOnParticipatingSecurities	3600000	USD
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000.0	USD
CY2019Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	9250000	shares
CY2019	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	25926388	shares
CY2019	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	506200000	USD
CY2019	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	19.52
CY2019Q4	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	203600000	USD
CY2019	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	65600000	USD
	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	55700000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	60200000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	70886000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	73374000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	71464000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	62552000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	59714000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	393995000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	731985000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	21883000	USD
CY2019Q4	jef	Future Minimum Annual Rentals Net Of Sublease Income FutureMinimumAnnualRentalsNetOfSubleaseIncome	710102000	USD
CY2019Q4	us-gaap	Contractual Obligation Due In Next Twelve Months ContractualObligationDueInNextTwelveMonths	8154700000	USD
CY2019Q4	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	232400000	USD
CY2019Q4	jef	Contractual Obligation Due In Third And Fourth Years ContractualObligationDueInThirdAndFourthYears	85000000.0	USD
CY2019Q4	jef	Contractual Obligation Due In Fifth And Sixth Years ContractualObligationDueInFifthAndSixthYears	14200000	USD
CY2019Q4	jef	Contractual Obligation Due In Seventh Year And Thereafter ContractualObligationDueInSeventhYearAndThereafter	14300000	USD
CY2019Q4	us-gaap	Contractual Obligation ContractualObligation	8500600000	USD
CY2019Q4	jef	Outstanding Loan Commitmentsto Clients OutstandingLoanCommitmentstoClients	64300000	USD
CY2019Q4	jef	Derivative Contracts Meeting Definitionof A Guarantee DerivativeContractsMeetingDefinitionofAGuarantee	170900000	USD
	jef	Income Loss From Discontinued Operations Before Tax Attributable To Parent IncomeLossFromDiscontinuedOperationsBeforeTaxAttributableToParent	140000000.0	USD
CY2017	jef	Income Loss From Discontinued Operations Before Tax Attributable To Parent IncomeLossFromDiscontinuedOperationsBeforeTaxAttributableToParent	322000000.0	USD
CY2019	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	3892976000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	3764034000	USD
CY2017	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	4077445000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	478608000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	296100000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	606502000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	152871000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	120317000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	110395000	USD
CY2019Q4	us-gaap	Assets Assets	49460234000	USD
CY2018Q4	us-gaap	Assets Assets	47131095000	USD
CY2017Q4	us-gaap	Assets Assets	47169108000	USD
CY2019Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	47015000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	672276000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	49394000	USD
CY2019Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	193878000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1066000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-191000	USD
CY2019	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	3892976000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	3764034000	USD
CY2017	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	4077445000	USD
CY2019Q1	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	828443000	USD
CY2019Q2	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1101657000	USD
CY2019Q3	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	856778000	USD
CY2019Q4	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1106098000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-116000	USD
CY2019Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-2606000	USD
CY2019Q1	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-138000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	427000	USD
CY2019Q3	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-242000	USD
CY2019Q4	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-333000	USD
CY2019Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1276000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1276000	USD
CY2019Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1275000	USD
CY2019Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1276000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	44811000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	670764000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	48477000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	195541000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.14
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.17
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.16
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2019Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	315175000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	307010000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	310288000	shares
CY2019Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	310266000	shares
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.14
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.14
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2019Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	318752000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	312527000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	311897000	shares
CY2019Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	316566000	shares
CY2018Q1	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	895435000	USD
CY2018Q2	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	911159000	USD
CY2018Q3	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1150846000	USD
CY2018Q4	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	806594000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	86192000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	27917000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	182301000	USD
CY2018Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-19318000	USD
CY2018Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	52957000	USD
CY2018Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	77106000	USD
CY2018Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	0	USD
CY2018Q4	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	0	USD
CY2018Q1	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2018Q2	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	643921000	USD
CY2018Q3	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2018Q4	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	0	USD
CY2018Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1344000	USD
CY2018Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	136000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-12000000	USD
CY2018Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	233000	USD
CY2018Q1	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	14796000	USD
CY2018Q2	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	22108000	USD
CY2018Q3	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	390000	USD
CY2018Q4	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	-31000	USD
CY2018Q1	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1172000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1171000	USD
CY2018Q3	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1276000	USD
CY2018Q4	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	851000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	124525000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	725529000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	192635000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-20371000	USD
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.23
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.08
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.56
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.06
CY2018Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0.11
CY2018Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0.15
CY2018Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018Q4	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018Q1	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018Q2	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerBasicShare	1.82
CY2018Q3	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018Q4	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.05
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.06
CY2018Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	366427000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	352049000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	341434000	shares
CY2018Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	329101000	shares
CY2018Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.23
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.08
CY2018Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.55
CY2018Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.06
CY2018Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.11
CY2018Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.15
CY2018Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q4	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q1	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q2	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	1.80
CY2018Q3	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q4	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.34
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.03
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.06
CY2018Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	373461000	shares
CY2018Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	329101000	shares
CY2019Q2	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	356075000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	350307000	shares

Files In Submission

Name	View Source	Status
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$JEF
Jefferies Financial Group Inc. Stock $jef

2019 Form 8-K Financial Statement

#000009622320000032 Filed on June 03, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JEF Jefferies Financial Group Inc. Stock $jef

2019 Form 8-K Financial Statement

#000009622320000032 Filed on June 03, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JEF
Jefferies Financial Group Inc. Stock $jef