$JEF
Jefferies Financial Group Inc. Stock $jef

$jef Overview Financials Valuation SEC Filings Company Website

2019 Q2 Form 10-Q Financial Statement

#000009622319000033 Filed on July 09, 2019

Income Statement

Concept	2019 Q2	2018 Q2
Revenue	$1.510B	$1.244B
YoY Change	21.43%	11.63%
Cost Of Revenue	$80.42M	$90.69M
YoY Change	-11.33%	29.59%
Gross Profit	$1.430B	$1.153B
YoY Change	24.01%	10.43%
Gross Profit Margin	94.68%	92.71%
Selling, General & Admin	$739.6M	$715.1M
YoY Change	3.43%	8.6%
% of Gross Profit	51.72%	62.01%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$36.79M	$31.91M
YoY Change	15.3%	212.79%
% of Gross Profit	2.57%	2.77%
Operating Expenses	$776.5M	$747.0M
YoY Change	3.95%	2.44%
Operating Profit	$653.5M	$406.1M
YoY Change	60.9%	28.93%
Interest Expense	$23.14M	$24.28M
YoY Change	-4.7%	-5.09%
% of Operating Profit	3.54%	5.98%
Other Income/Expense, Net
YoY Change
Pretax Income	$183.5M	$37.52M
YoY Change	389.08%	-18.9%
Income Tax	-$488.8M	$9.598M
% Of Pretax Income	-266.4%	25.58%
Net Earnings	$670.8M	$725.5M
YoY Change	-7.55%	1146.76%
Net Earnings / Revenue	44.41%	58.33%
Basic Earnings Per Share	$2.17	$2.05
Diluted Earnings Per Share	$2.14	$2.03
COMMON SHARES
Basic Shares Outstanding	307.0M shares	352.0M shares
Diluted Shares Outstanding	312.5M shares	356.1M shares

Balance Sheet

Concept	2019 Q2	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$5.394B	$4.741B
YoY Change	13.77%	1.69%
Cash & Equivalents	$5.394B	$4.741B
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$12.31B	$10.62B
YoY Change	15.9%	-2.18%
LONG-TERM ASSETS
Property, Plant & Equipment		$353.6M
YoY Change		-51.46%
Goodwill	$1.701B	$1.706B
YoY Change	-0.25%	-0.74%
Intangibles	$181.6M	$195.7M
YoY Change	-7.21%	-74.59%
Long-Term Investments	$2.416B	$2.523B
YoY Change	-4.24%	12.66%
Other Assets	$1.015B	$1.497B
YoY Change	-32.2%	-33.2%
Total Long-Term Assets	$36.22B	$38.78B
YoY Change	-6.62%	3.37%
TOTAL ASSETS
Total Short-Term Assets	$12.31B	$10.62B
Total Long-Term Assets	$36.22B	$38.78B
Total Assets	$48.52B	$49.40B
YoY Change	-1.78%	2.12%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$7.029B	$7.497B
YoY Change	-6.24%	10.49%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$510.4M	$506.2M
YoY Change	0.83%	15.27%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$18.73B	$19.33B
YoY Change	-3.12%	0.21%
LONG-TERM LIABILITIES
Long-Term Debt	$9.786B	$9.305B
YoY Change	5.17%	3.7%
Other Long-Term Liabilities	$10.11B	$10.18B
YoY Change	-0.69%	11.62%
Total Long-Term Liabilities	$19.90B	$19.49B
YoY Change	2.11%	7.69%
TOTAL LIABILITIES
Total Short-Term Liabilities	$18.73B	$19.33B
Total Long-Term Liabilities	$19.90B	$19.49B
Total Liabilities	$38.50B	$38.70B
YoY Change	-0.5%	3.84%
SHAREHOLDERS EQUITY
Retained Earnings	$6.247B	$5.523B
YoY Change	13.1%	11.85%
Common Stock	$3.850B	$4.700B
YoY Change	-18.09%	-9.66%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares	26.36M shares	83.56M shares
Shareholders Equity	$9.854B	$10.54B
YoY Change
Total Liabilities & Shareholders Equity	$48.52B	$49.40B
YoY Change	-1.78%	2.12%

Cashflow Statement

Concept	2019 Q2	2018 Q2
OPERATING ACTIVITIES
Net Income	$670.8M	$725.5M
YoY Change	-7.55%	1146.76%
Depreciation, Depletion And Amortization	$36.79M	$31.91M
YoY Change	15.3%	212.79%
Cash From Operating Activities	-$656.4M	-$118.8M
YoY Change	452.53%	-114.56%
INVESTING ACTIVITIES
Capital Expenditures	-$56.40M	-$198.6M
YoY Change	-71.6%	1096.39%
Acquisitions
YoY Change
Other Investing Activities	$184.4M	$463.4M
YoY Change	-60.21%	432.64%
Cash From Investing Activities	$127.9M	$264.9M
YoY Change	-51.72%	276.28%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	206.1M	-675.6M
YoY Change	-130.51%	139.24%
NET CHANGE
Cash From Operating Activities	-656.4M	-118.8M
Cash From Investing Activities	127.9M	264.9M
Cash From Financing Activities	206.1M	-675.6M
Net Change In Cash	-322.4M	-529.5M
YoY Change	-39.11%	-187.68%
FREE CASH FLOW
Cash From Operating Activities	-$656.4M	-$118.8M
Capital Expenditures	-$56.40M	-$198.6M
Free Cash Flow	-$600.0M	$79.80M
YoY Change	-851.88%	-90.41%

Facts In Submission

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	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0000096223
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
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	dei	Document Type DocumentType	10-Q
	dei	Document Period End Date DocumentPeriodEndDate	2019-05-31
	dei	Entity Registrant Name EntityRegistrantName	JEFFERIES FINANCIAL GROUP INC.
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CY2018Q4	jef	Mandatorily Redeemable Convertible Preferred Shares MandatorilyRedeemableConvertiblePreferredShares	125000000	USD
CY2019Q2	us-gaap	Common Stock Value CommonStockValue	290687000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	307515000	USD
CY2019Q2	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3559156000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	3854847000	USD
CY2019Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-242824000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	288286000	USD
CY2019Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	6246852000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	5610218000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	9853871000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	10060866000	USD
CY2019Q2	us-gaap	Minority Interest MinorityInterest	23490000	USD
CY2018Q4	us-gaap	Minority Interest MinorityInterest	18391000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9877361000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10079257000	USD
CY2019Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	48523940000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	47131095000	USD
CY2019Q2	us-gaap	Revenues Revenues	1510371000	USD
CY2018Q2	us-gaap	Revenues Revenues	1243826000	USD
	us-gaap	Revenues Revenues	2705383000	USD
	us-gaap	Revenues Revenues	2404937000	USD
CY2019Q2	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1101657000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1930100000	USD
CY2018Q2	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	911159000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1806594000	USD
CY2019Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	510560000	USD
CY2018Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	478515000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	920152000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	968174000	USD
CY2019Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	80415000	USD
CY2018Q2	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	90690000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	147336000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	172625000	USD
CY2019Q2	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	60387000	USD
CY2018Q2	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	45046000	USD
	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	112255000	USD
	us-gaap	Floor Brokerage Exchange And Clearance Fees FloorBrokerageExchangeAndClearanceFees	87222000	USD
CY2019Q2	us-gaap	Interest Expense InterestExpense	23138000	USD
CY2018Q2	us-gaap	Interest Expense InterestExpense	24279000	USD
	us-gaap	Interest Expense InterestExpense	46156000	USD
	us-gaap	Interest Expense InterestExpense	45777000	USD
CY2019Q2	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36786000	USD
CY2018Q2	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	31905000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	70720000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	60065000	USD
CY2019Q2	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	229062000	USD
CY2018Q2	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	236562000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	450168000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	462906000	USD
CY2019Q2	us-gaap	Costs And Expenses CostsAndExpenses	940348000	USD
CY2018Q2	us-gaap	Costs And Expenses CostsAndExpenses	906997000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1746787000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1796769000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	161309000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4162000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	183313000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	9825000	USD
CY2019Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	22170000	USD
CY2018Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	33353000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	49483000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	65453000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	183479000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	37515000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	232796000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	75278000	USD
CY2019Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-488797000	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9598000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-486495000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-38831000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	672276000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	27917000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	719291000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	114109000	USD
CY2019Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	0	USD
CY2018Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	77106000	USD
	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
CY2019Q2	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
	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
CY2019Q2	us-gaap	Profit Loss ProfitLoss	672276000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	748944000	USD
	us-gaap	Profit Loss ProfitLoss	719291000	USD
	us-gaap	Profit Loss ProfitLoss	888093000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-191000	USD
CY2018Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	136000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	875000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-1208000	USD
CY2019Q2	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	427000	USD
CY2018Q2	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	22108000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	289000	USD
	us-gaap	Net Income Loss Attributable To Redeemable Noncontrolling Interest NetIncomeLossAttributableToRedeemableNoncontrollingInterest	36904000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1276000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1171000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2552000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2343000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	670764000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	725529000	USD
	us-gaap	Net Income Loss NetIncomeLoss	715575000	USD
	us-gaap	Net Income Loss NetIncomeLoss	850054000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.17
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.08
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.29
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.31
CY2019Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0
CY2019Q2	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.14
CY2018Q2	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxPerDilutedShare	1.80
CY2018Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	0.15
	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	0.26
CY2019Q2	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
	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	1.79
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.17
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.05
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.29
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.36
CY2019Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.14
CY2018Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.08
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.25
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.31
CY2019Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0
CY2018Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	0.15
	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	0.25
	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	1.77
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.03
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.25
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.33
CY2019Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	670764000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	27193000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	715575000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	113211000	USD
CY2019Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2018Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	54415000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	92922000	USD
CY2019Q2	jef	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Attributable To Parent DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxAttributableToParent	0	USD
CY2018Q2	jef	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Attributable To Parent DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxAttributableToParent	643921000	USD
	jef	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Attributable To Parent DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxAttributableToParent	0	USD
	jef	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax Attributable To Parent DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTaxAttributableToParent	643921000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	670764000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	725529000	USD
	us-gaap	Net Income Loss NetIncomeLoss	715575000	USD
	us-gaap	Net Income Loss NetIncomeLoss	850054000	USD
	us-gaap	Profit Loss ProfitLoss	719291000	USD
CY2019Q2	us-gaap	Profit Loss ProfitLoss	672276000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	748944000	USD
	us-gaap	Profit Loss ProfitLoss	888093000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	62000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	818000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	379000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-408000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	544307000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	118000	USD
	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	103000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-544245000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	700000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-542799000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-511000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-40147000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-49310000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-9193000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-31407000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
CY2018Q2	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
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	0	USD
	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
CY2019Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-40147000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-69769000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-9193000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-51866000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	2616000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	26287000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	20151000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Unrealized Gain Loss Arising During Period After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionUnrealizedGainLossArisingDuringPeriodAfterTax	14718000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	-199000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	270000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	-493000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option Reclassification Adjustment From Aoci For Derecognition After Tax OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionReclassificationAdjustmentFromAociForDerecognitionAfterTax	270000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	2815000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	26017000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	20644000	USD
	us-gaap	Other Comprehensive Income Loss Financial Liability Fair Value Option After Tax And Reclassification Adjustment OtherComprehensiveIncomeLossFinancialLiabilityFairValueOptionAfterTaxAndReclassificationAdjustment	14448000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	251000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	251000	USD
	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	1499000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1961344000	USD
	jef	Proceeds From Maturities Of Investments ProceedsFromMaturitiesOfInvestments	531067000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	470000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	0	USD
	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
CY2019Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-219000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	251000	USD
	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	1499000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	0	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	353000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	457000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	708000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansNetOfTax	6263000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-353000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-457000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-708000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-6263000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-581443000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-42344000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-531110000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-30167000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	90833000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	706600000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	188181000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	857926000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-191000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	136000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	875000	USD
	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1208000	USD
CY2019Q2	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	427000	USD
CY2018Q2	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	22108000	USD
	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	289000	USD
	jef	Comprehensive Income Loss Net Of Tax Attributable To Redeemable Noncontrolling Interests ComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNoncontrollingInterests	36904000	USD
CY2019Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1276000	USD
CY2018Q2	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	1171000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2552000	USD
	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2343000	USD
CY2019Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	89321000	USD
	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	1986000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	16647000	USD
	jef	Income Losses Relatedto Associated Companies Including Income Losses Relatedto Subsidiary Associated Companies Primarily Classifiedas Revenues IncomeLossesRelatedtoAssociatedCompaniesIncludingIncomeLossesRelatedtoSubsidiaryAssociatedCompaniesPrimarilyClassifiedasRevenues	103804000	USD
CY2018Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	683185000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	184465000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	819887000	USD
	us-gaap	Profit Loss ProfitLoss	719291000	USD
	us-gaap	Profit Loss ProfitLoss	888093000	USD
	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 Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations	40388000	USD
	jef	Deferred Income Tax Expense Benefit Continuing And Discontinued Operations DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations	203493000	USD
	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544583000	USD
	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	0	USD
	jef	Depreciation And Amortization Of Property Equipment And Leasehold Improvements DepreciationAndAmortizationOfPropertyEquipmentAndLeaseholdImprovements	64428000	USD
	jef	Depreciation And Amortization Of Property Equipment And Leasehold Improvements DepreciationAndAmortizationOfPropertyEquipmentAndLeaseholdImprovements	52516000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	-13669000	USD
	us-gaap	Other Depreciation And Amortization OtherDepreciationAndAmortization	-15748000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	24886000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	25198000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	13098000	USD
	jef	Income Losses Relatedto Associated Companies Including Income Losses Relatedto Subsidiary Associated Companies Primarily Classifiedas Revenues IncomeLossesRelatedtoAssociatedCompaniesIncludingIncomeLossesRelatedtoSubsidiaryAssociatedCompaniesPrimarilyClassifiedasRevenues	90287000	USD
	jef	Dividends Or Distributions From Associated Companies DividendsOrDistributionsFromAssociatedCompanies	150273000	USD
	jef	Dividends Or Distributions From Associated Companies DividendsOrDistributionsFromAssociatedCompanies	42952000	USD
	jef	Netgainslossesrelatedtopropertyandequipmentandotherassets Netgainslossesrelatedtopropertyandequipmentandotherassets	-2761000	USD
	jef	Netgainslossesrelatedtopropertyandequipmentandotherassets Netgainslossesrelatedtopropertyandequipmentandotherassets	-9006000	USD
	jef	Increase Decreasein Securities Depositedwith Clearingand Depository Organizations IncreaseDecreaseinSecuritiesDepositedwithClearingandDepositoryOrganizations	3000	USD
	jef	Increase Decreasein Securities Depositedwith Clearingand Depository Organizations IncreaseDecreaseinSecuritiesDepositedwithClearingandDepositoryOrganizations	-64880000	USD
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	-251972000	USD
	us-gaap	Increase Decrease In Trading Securities IncreaseDecreaseInTradingSecurities	2245744000	USD
	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	1192513000	USD
	us-gaap	Increase Decrease In Securities Borrowed IncreaseDecreaseInSecuritiesBorrowed	-97924000	USD
	jef	Increase Decrease In Securities Purchased Under Agreements To Resell IncreaseDecreaseInSecuritiesPurchasedUnderAgreementsToResell	1253866000	USD
	jef	Increase Decrease In Securities Purchased Under Agreements To Resell IncreaseDecreaseInSecuritiesPurchasedUnderAgreementsToResell	176922000	USD
	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	680802000	USD
	us-gaap	Increase Decrease In Brokerage Receivables IncreaseDecreaseInBrokerageReceivables	187663000	USD
	jef	Increase Decrease Receivables From Customers Of Securities Operations IncreaseDecreaseReceivablesFromCustomersOfSecuritiesOperations	-228412000	USD
	jef	Increase Decrease Receivables From Customers Of Securities Operations IncreaseDecreaseReceivablesFromCustomersOfSecuritiesOperations	419506000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	125315000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	86984000	USD
	jef	Increase Decrease In Other Assets IncreaseDecreaseInOtherAssets	137438000	USD
	jef	Increase Decrease In Other Assets IncreaseDecreaseInOtherAssets	57380000	USD
	us-gaap	Increase Decrease In Trading Liabilities IncreaseDecreaseInTradingLiabilities	654849000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-1440361000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	-524114000	USD
	us-gaap	Increase Decrease In Trading Liabilities IncreaseDecreaseInTradingLiabilities	1799908000	USD
	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	500307000	USD
	us-gaap	Increase Decrease In Securities Loaned Transactions IncreaseDecreaseInSecuritiesLoanedTransactions	-266028000	USD
	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	233115000	USD
	us-gaap	Increase Decrease In Payables Under Repurchase Agreements IncreaseDecreaseInPayablesUnderRepurchaseAgreements	139287000	USD
	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	26872000	USD
	us-gaap	Increase Decrease In Payables To Broker Dealers IncreaseDecreaseInPayablesToBrokerDealers	518671000	USD
	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	-38618000	USD
	us-gaap	Increase Decrease In Payables To Customers IncreaseDecreaseInPayablesToCustomers	489060000	USD
	jef	Increase Decreasein Trade Payables Expense Accrualsand Other Liabilities IncreaseDecreaseinTradePayablesExpenseAccrualsandOtherLiabilities	-347271000	USD
	jef	Increase Decreasein Trade Payables Expense Accrualsand Other Liabilities IncreaseDecreaseinTradePayablesExpenseAccrualsandOtherLiabilities	-351950000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-86869000	USD
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	87605000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-1440361000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	-688764000	USD
	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
	jef	Payments To Acquire Property Plant And Equipment And Other Assets PaymentsToAcquirePropertyPlantAndEquipmentAndOtherAssets	102515000	USD
	jef	Payments To Acquire Property Plant And Equipment And Other Assets PaymentsToAcquirePropertyPlantAndEquipmentAndOtherAssets	240864000	USD
	jef	Proceeds From Disposals Of Property And Equipment And Other Assets ProceedsFromDisposalsOfPropertyAndEquipmentAndOtherAssets	5860000	USD
	jef	Proceeds From Disposals Of Property And Equipment And Other Assets ProceedsFromDisposalsOfPropertyAndEquipmentAndOtherAssets	8138000	USD
	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	199276000	USD
	us-gaap	Payments To Acquire Receivables PaymentsToAcquireReceivables	0	USD
	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	131249000	USD
	us-gaap	Proceeds From Sale And Collection Of Receivables ProceedsFromSaleAndCollectionOfReceivables	11785000	USD
	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	74105000	USD
	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	1921671000	USD
	jef	Capitaldistributionsandloanrepaymentsfromassociatedcompanies Capitaldistributionsandloanrepaymentsfromassociatedcompanies	25612000	USD
	jef	Capitaldistributionsandloanrepaymentsfromassociatedcompanies Capitaldistributionsandloanrepaymentsfromassociatedcompanies	1925104000	USD
	jef	Proceeds From Maturities Of Investments ProceedsFromMaturitiesOfInvestments	370360000	USD
	jef	Proceeds From Sales Of Investments ProceedsFromSalesOfInvestments	886876000	USD
	jef	Proceeds From Sales Of Investments ProceedsFromSalesOfInvestments	955785000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	1202782000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-852706000	USD
	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	860827000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	1202782000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	8121000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	1230064000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	1863299000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	877593000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	1585149000	USD
	jef	Netchangeinothersecuredfinancings Netchangeinothersecuredfinancings	264168000	USD
	jef	Netchangeinothersecuredfinancings Netchangeinothersecuredfinancings	434188000	USD
	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-14352000	USD
	us-gaap	Proceeds From Repayments Of Bank Overdrafts ProceedsFromRepaymentsOfBankOverdrafts	-2722000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	2481000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	6705000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	113000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	364708000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	562429000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	74563000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	70050000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	581000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1281000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	167821000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	78531000	USD
	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
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	167821000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	198853000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-3892000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	-9582000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-73650000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-326722000	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
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5939012000	USD
CY2019Q2	jef	Profit Loss Excluding Net Income Loss Attributable To Redeemable Noncontrolling Interests ProfitLossExcludingNetIncomeLossAttributableToRedeemableNoncontrollingInterests	670573000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-581443000	USD
CY2019Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	9956133000	USD
CY2018Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5447783000	USD
CY2019Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5393737000	USD
CY2018Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4741057000	USD
CY2019Q2	jef	Cash And Securities Segregated And On Deposit For Regulatory Purposes Or Deposited With Clearing And Depository Organizations CashAndSecuritiesSegregatedAndOnDepositForRegulatoryPurposesOrDepositedWithClearingAndDepositoryOrganizations	508607000	USD
CY2018Q2	jef	Cash And Securities Segregated And On Deposit For Regulatory Purposes Or Deposited With Clearing And Depository Organizations CashAndSecuritiesSegregatedAndOnDepositForRegulatoryPurposesOrDepositedWithClearingAndDepositoryOrganizations	674796000	USD
CY2019Q2	jef	Restricted Cash Other Assets RestrictedCashOtherAssets	36668000	USD
CY2018Q2	jef	Restricted Cash Other Assets RestrictedCashOtherAssets	31930000	USD
CY2019Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5939012000	USD
CY2018Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5447783000	USD
CY2019Q2	jef	Contributionsfrom Noncontrolling Interests ContributionsfromNoncontrollingInterests	2000000	USD
CY2019Q2	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1500000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	13073000	USD
CY2019Q2	jef	Change In Fair Value Of Redeemable Noncontrolling Interests ChangeInFairValueOfRedeemableNoncontrollingInterests	1657000	USD
CY2019Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	150046000	USD
CY2019Q2	us-gaap	Dividends Common Stock DividendsCommonStock	38847000	USD
CY2019Q2	us-gaap	Stockholders Equity Other StockholdersEquityOther	-5761000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	9877361000	USD
CY2018Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	10288128000	USD
CY2018Q2	jef	Profit Loss Excluding Net Income Loss Attributable To Redeemable Noncontrolling Interests ProfitLossExcludingNetIncomeLossAttributableToRedeemableNoncontrollingInterests	725665000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-42344000	USD
CY2018Q2	jef	Contributionsfrom Noncontrolling Interests ContributionsfromNoncontrollingInterests	113000	USD
CY2018Q2	jef	Reversal Of Cumulative Redeemable Noncontrolling Interests Fair Value Adjustments Prior To Deconsolidation ReversalOfCumulativeRedeemableNoncontrollingInterestsFairValueAdjustmentsPriorToDeconsolidation	237669000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	12767000	USD
CY2018Q2	jef	Change In Fair Value Of Redeemable Noncontrolling Interests ChangeInFairValueOfRedeemableNoncontrollingInterests	-38471000	USD
CY2018Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	583651000	USD
CY2018Q2	us-gaap	Dividends Common Stock DividendsCommonStock	35581000	USD
CY2018Q2	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3146000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	10567441000	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	10079257000	USD
	jef	Profit Loss Excluding Net Income Loss Attributable To Redeemable Noncontrolling Interests ProfitLossExcludingNetIncomeLossAttributableToRedeemableNoncontrollingInterests	716450000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-531110000	USD
	jef	Contributionsfrom Noncontrolling Interests ContributionsfromNoncontrollingInterests	6705000	USD
	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2481000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	24886000	USD
	jef	Change In Fair Value Of Redeemable Noncontrolling Interests ChangeInFairValueOfRedeemableNoncontrollingInterests	1121000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	347139000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	78941000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-8613000	USD
CY2019Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	9877361000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10138979000	USD
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	17812000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	10156791000	USD
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	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-30167000	USD
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	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	25198000	USD
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	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	586351000	USD
	us-gaap	Dividends Common Stock DividendsCommonStock	73141000	USD
	us-gaap	Stockholders Equity Other StockholdersEquityOther	-9887000	USD
CY2018Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	10567441000	USD
	us-gaap	Nature Of Operations NatureOfOperations	Nature of Operations<div style="line-height:120%;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 Financial Group Inc. ("Jefferies" 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%;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: Capital Markets and Asset Management. Capital Markets includes investment banking, sales and trading and other related services. Investment banking provides capital markets and financial advisory services to clients across most industry sectors in the Americas, Europe and Asia. Sales and trading 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, as well as other principal and corporate investing activities. Asset Management provides investment management services to investors in the U.S. and overseas and makes capital investments in managed funds and accounts. 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. </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 invest in unique long-term opportunities. Our current Merchant Banking businesses and investments include National Beef Packing Company, LLC ("National Beef") (beef processing), Spectrum Brands Holdings, Inc. ("Spectrum Brands") (consumer products), 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), WeWork (global network of workspaces), HomeFed Corporation ("HomeFed") (real estate), Idaho Timber (manufacturing) and FXCM Group, LLC ("FXCM") (provider of online foreign exchange trading services). Our Merchant Banking businesses and investments also included Leucadia Asset Management ("LAM") (asset management) and Berkadia Commercial Mortgage Holding LLC ("Berkadia") (commercial mortgage banking, investment sales and servicing), prior to their 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;">We own </span><span style="font-family:inherit;font-size:10pt;"><span>31%</span></span><span style="font-family:inherit;font-size:10pt;"> of National Beef, one of the largest beef processing companies in the U.S. 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 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 account 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. See Note 23 for more information.</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>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 reflect this investment at fair value based on quoted market prices. </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;">May 31, 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 WeWork, which creates collaborative office communities. Currently 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 company. Our interest in WeWork is reflected in Trading assets in our financial statements at fair value.</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;">Through June 30, 2019, we owned an approximate </span><span style="font-family:inherit;font-size:10pt;"><span>70%</span></span><span style="font-family:inherit;font-size:10pt;"> equity interest of HomeFed, which owns and develops residential and mixed-use real estate properties and 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 will be 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. As an offset to these issued shares, our Board of Directors has authorized the repurchase of </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>
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CY2018Q4	us-gaap	Receivables From Brokers Dealers And Clearing Organizations ReceivablesFromBrokersDealersAndClearingOrganizations	3223700000	USD
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	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	21410000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	15804000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2197763000	USD
CY2019Q2	us-gaap	Derivative Assets DerivativeAssets	356499000	USD
CY2019Q2	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2197763000	USD
CY2019Q2	jef	Financial Instruments Owned Trading Assetsat Fair Value Excluding Investments Basedon Net Asset Value FinancialInstrumentsOwnedTradingAssetsatFairValueExcludingInvestmentsBasedonNetAssetValue	16532165000	USD
CY2019Q2	jef	Securities Purchased Under Agreements To Resellat Fair Value SecuritiesPurchasedUnderAgreementsToResellatFairValue	25000000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2370008000	USD
CY2019Q2	us-gaap	Derivative Liabilities DerivativeLiabilities	554243000	USD
CY2019Q2	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2370008000	USD
CY2019Q2	us-gaap	Trading Liabilities Fair Value Disclosure TradingLiabilitiesFairValueDisclosure	10113390000	USD
CY2019Q2	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	819509000	USD
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CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	166775000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2413931000	USD
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CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1127653000	USD
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CY2018Q4	us-gaap	Trading Liabilities Fair Value Disclosure TradingLiabilitiesFairValueDisclosure	9478946000	USD
CY2018Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	686170000	USD
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CY2018Q4	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Unfunded Committments FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareUnfundedCommittments	20996000	USD
CY2019Q2	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Redemption Restriction Period In Effect1 FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareRedemptionRestrictionPeriodInEffect1	P36M
CY2019Q2	us-gaap	Fair Value Investments Entities That Calculate Net Asset Value Per Share Redemption Restriction Period FairValueInvestmentsEntitiesThatCalculateNetAssetValuePerShareRedemptionRestrictionPeriod	P31M
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CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	31700000	USD
CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	79500000	USD
CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	57400000	USD
CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	105400000	USD
CY2019Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	23200000	USD
CY2019Q2	jef	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings And Other Comprehensive Income Loss FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarningsAndOtherComprehensiveIncomeLoss	14100000	USD
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	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	89000000.0	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersIntoLevel3	69600000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Liability Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3	63200000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	23300000	USD
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CY2018Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	78700000	USD
CY2018Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	28000000.0	USD
CY2018Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	-10700000	USD
CY2018Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings	25800000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	49100000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	14900000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings1 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1	16700000	USD
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CY2019Q2	jef	Excluded Securities From Unobservable Quantitative Information Assets ExcludedSecuritiesFromUnobservableQuantitativeInformationAssets	73600000	USD
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CY2019Q2	us-gaap	Derivative Assets DerivativeAssets	356499000	USD
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CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	1127653000	USD
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CY2019Q2	jef	Otc Derivative Assets Having Maturity Period Of Zero To Twelve Months OtcDerivativeAssetsHavingMaturityPeriodOfZeroToTwelveMonths	194673000	USD
CY2019Q2	jef	Otc Derivative Assets Having Maturity Period Of One To Five Years OtcDerivativeAssetsHavingMaturityPeriodOfOneToFiveYears	259658000	USD
CY2019Q2	jef	Otc Derivative Assets Having Maturity Period Of Greater Than Five Years OtcDerivativeAssetsHavingMaturityPeriodOfGreaterThanFiveYears	124949000	USD
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CY2019Q2	jef	Consolidated Otc Derivative Assets Net Of Crossmaturity Netting ConsolidatedOtcDerivativeAssetsNetOfCrossmaturityNetting	484602000	USD
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CY2019Q2	jef	Otc Derivative Assets Included In Financial Instruments Owned OtcDerivativeAssetsIncludedInFinancialInstrumentsOwned	445289000	USD
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CY2019Q2	jef	Otc Derivative Liabilities Having Maturity Period Of Zero To Twelve Months OtcDerivativeLiabilitiesHavingMaturityPeriodOfZeroToTwelveMonths	234523000	USD
CY2019Q2	jef	Otc Derivative Liabilities Having Maturity Period Of One To Five Years OtcDerivativeLiabilitiesHavingMaturityPeriodOfOneToFiveYears	259998000	USD
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CY2019Q2	jef	Fair Value Of Otc Derivatives Assets Counterparty Credit Quality Bb Plus Or Lower FairValueOfOtcDerivativesAssetsCounterpartyCreditQualityBbPlusOrLower	194336000	USD
CY2019Q2	jef	Fair Value Of Over Counter Derivatives Assets Counterparty Credit Quality Unrated FairValueOfOverCounterDerivativesAssetsCounterpartyCreditQualityUnrated	131239000	USD
CY2019Q2	jef	Otc Derivative Assets Included In Financial Instruments Owned OtcDerivativeAssetsIncludedInFinancialInstrumentsOwned	445289000	USD
CY2019Q2	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	41100000	USD
CY2018Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	93500000	USD
CY2019Q2	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	11600000	USD
CY2018Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	61500000	USD
CY2019Q2	jef	Collateral Received Aggregate Fair Value CollateralReceivedAggregateFairValue	30500000	USD
CY2018Q4	jef	Collateral Received Aggregate Fair Value CollateralReceivedAggregateFairValue	91500000	USD
CY2019Q2	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	59900000	USD
CY2018Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	123300000	USD
CY2019Q2	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	2327805000	USD
CY2019Q2	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	21093190000	USD
CY2019Q2	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	23420995000	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
CY2019Q2	us-gaap	Securities Loaned Including Not Subject To Master Netting Arrangement And Assets Other Than Securities Transferred SecuritiesLoanedIncludingNotSubjectToMasterNettingArrangementAndAssetsOtherThanSecuritiesTransferred	2327805000	USD
CY2019Q2	us-gaap	Financial Assets Sold Under Agreements To Repurchase Gross Including Not Subject To Master Netting Arrangement FinancialAssetsSoldUnderAgreementsToRepurchaseGrossIncludingNotSubjectToMasterNettingArrangement	21093190000	USD
CY2019Q2	us-gaap	Secured Borrowings Gross Including Not Subject To Master Netting Arrangement SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement	23420995000	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
CY2019Q2	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	29400000000	USD
CY2018Q4	us-gaap	Fair Value Of Securities Received As Collateral That Can Be Resold Or Repledged FairValueOfSecuritiesReceivedAsCollateralThatCanBeResoldOrRepledged	23100000000	USD
CY2019Q2	us-gaap	Securities Borrowed Gross SecuritiesBorrowedGross	7713886000	USD
CY2019Q2	us-gaap	Securities Borrowed Liability SecuritiesBorrowedLiability	0	USD
CY2019Q2	us-gaap	Securities Borrowed SecuritiesBorrowed	7713886000	USD
CY2019Q2	us-gaap	Securities Borrowed Collateral Obligation To Return Cash SecuritiesBorrowedCollateralObligationToReturnCash	570248000	USD
CY2019Q2	us-gaap	Securities Borrowed Collateral Obligation To Return Securities SecuritiesBorrowedCollateralObligationToReturnSecurities	1585821000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Liability SecuritiesPurchasedUnderAgreementsToResellLiability	12231733000	USD
CY2019Q2	us-gaap	Securities Borrowed Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesBorrowedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	5557817000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Gross SecuritiesPurchasedUnderAgreementsToResellGross	16259065000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell SecuritiesPurchasedUnderAgreementsToResell	4027332000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Cash SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnCash	526433000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities SecuritiesPurchasedUnderAgreementsToResellCollateralObligationToReturnSecurities	3452962000	USD
CY2019Q2	us-gaap	Securities Purchased Under Agreements To Resell Amount Offset Against Collateral SecuritiesPurchasedUnderAgreementsToResellAmountOffsetAgainstCollateral	47937000	USD
CY2019Q2	us-gaap	Securities Loaned Gross SecuritiesLoanedGross	2327805000	USD
CY2019Q2	us-gaap	Securities Loaned Asset SecuritiesLoanedAsset	0	USD
CY2019Q2	us-gaap	Securities Loaned SecuritiesLoaned	2327805000	USD
CY2019Q2	us-gaap	Securities Loaned Collateral Right To Reclaim Cash SecuritiesLoanedCollateralRightToReclaimCash	570248000	USD
CY2019Q2	us-gaap	Securities Loaned Collateral Right To Reclaim Securities SecuritiesLoanedCollateralRightToReclaimSecurities	1694029000	USD
CY2019Q2	us-gaap	Securities Loaned Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election SecuritiesLoanedOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	63528000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Gross SecuritiesSoldUnderAgreementsToRepurchaseGross	21093190000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Asset SecuritiesSoldUnderAgreementsToRepurchaseAsset	12231733000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	8861457000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Cash SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimCash	526433000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Collateral Right To Reclaim Securities SecuritiesSoldUnderAgreementsToRepurchaseCollateralRightToReclaimSecurities	7103993000	USD
CY2019Q2	us-gaap	Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral SecuritiesSoldUnderAgreementsToRepurchaseAmountOffsetAgainstCollateral	1231031000	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
CY2019Q2	jef	Securities Borrowed Asset Net Subject To Review SecuritiesBorrowedAssetNetSubjectToReview	5469000000.0	USD
CY2019Q2	jef	Securities Borrowed Asset Collateral Received Subject To Review SecuritiesBorrowedAssetCollateralReceivedSubjectToReview	5273800000	USD
CY2019Q2	jef	Securities Sold Under Agreements To Repurchase Net Amount Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseNetAmountSubjectToReview	1119300000	USD
CY2019Q2	jef	Securities Sold Under Agreements To Repurchase Collateral Pledged Subject To Review SecuritiesSoldUnderAgreementsToRepurchaseCollateralPledgedSubjectToReview	1147800000	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
CY2019Q2	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	543400000	USD
CY2018Q4	us-gaap	Cash And Securities Segregated Under Federal And Other Regulations CashAndSecuritiesSegregatedUnderFederalAndOtherRegulations	708000000.0	USD
CY2019Q2	jef	Assets Transferred Due To Securitization AssetsTransferredDueToSecuritization	844500000	USD
CY2018Q2	jef	Assets Transferred Due To Securitization AssetsTransferredDueToSecuritization	1042600000	USD
	jef	Assets Transferred Due To Securitization AssetsTransferredDueToSecuritization	2105100000	USD
	jef	Assets Transferred Due To Securitization AssetsTransferredDueToSecuritization	3800300000	USD
CY2019Q2	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	845800000	USD
CY2018Q2	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	1043400000	USD
	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	2177000000.0	USD
	jef	Proceeds On New Securitizations ProceedsOnNewSecuritizations	3802300000	USD
CY2019Q2	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	24300000	USD
CY2018Q2	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	7800000	USD
	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	36600000	USD
	us-gaap	Cash Flows Between Transferee And Transferor Proceeds From New Transfers CashFlowsBetweenTransfereeAndTransferorProceedsFromNewTransfers	23800000	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
CY2019Q2	us-gaap	Other Investment Not Readily Marketable Fair Value OtherInvestmentNotReadilyMarketableFairValue	210100000	USD
CY2018Q4	us-gaap	Other Investment Not Readily Marketable Fair Value OtherInvestmentNotReadilyMarketableFairValue	230000000.0	USD
CY2019Q2	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets VariableInterestEntityNonconsolidatedCarryingAmountAssets	1080400000	USD
CY2019Q2	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Liabilities VariableInterestEntityNonconsolidatedCarryingAmountLiabilities	600000	USD
CY2019Q2	us-gaap	Variable Interest Entity Entity Maximum Loss Exposure Amount VariableInterestEntityEntityMaximumLossExposureAmount	1976600000	USD
CY2019Q2	jef	Variable Interest Entity Assetsof Non Consolidated Vie VariableInterestEntityAssetsofNonConsolidatedVie	19539000000.0	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
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
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	49483000	USD
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CY2019Q2	us-gaap	Equity Method Investments EquityMethodInvestments	2415894000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2066829000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	65453000	USD
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CY2018Q2	us-gaap	Equity Method Investments EquityMethodInvestments	2522944000	USD
CY2019Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	22170000	USD
CY2018Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	33353000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	49483000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	65453000	USD
CY2019Q2	jef	Equity Method Investments Income Losses Relatedto Subsidiary Associated Companies Primarily Classifiedas Revenues EquityMethodInvestmentsIncomeLossesRelatedtoSubsidiaryAssociatedCompaniesPrimarilyClassifiedasRevenues	42984000	USD
CY2018Q2	jef	Equity Method Investments Income Losses Relatedto Subsidiary Associated Companies Primarily Classifiedas Revenues EquityMethodInvestmentsIncomeLossesRelatedtoSubsidiaryAssociatedCompaniesPrimarilyClassifiedasRevenues	19229000	USD
	jef	Equity Method Investments Income Losses Relatedto Subsidiary Associated Companies Primarily Classifiedas Revenues EquityMethodInvestmentsIncomeLossesRelatedtoSubsidiaryAssociatedCompaniesPrimarilyClassifiedasRevenues	54321000	USD
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	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	4736971000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	2899221000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations Before Extraordinary Items EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems	360966000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Income Loss From Continuing Operations Before Extraordinary Items EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems	330849000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	360966000	USD
	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	832349000	USD
CY2019Q2	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	181629000	USD
CY2018Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	188291000	USD
CY2019Q2	us-gaap	Goodwill Goodwill	1701301000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	1701840000	USD
CY2019Q2	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1882930000	USD
CY2018Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	1890131000	USD
CY2019Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3300000	USD
CY2018Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3300000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6600000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	6500000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	6719000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	13439000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	13085000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	10110000	USD
CY2019Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	9001000	USD
CY2019Q2	us-gaap	Short Term Borrowings ShortTermBorrowings	510435000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	387492000	USD
CY2019Q2	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0358
CY2018Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0308
CY2019Q2	us-gaap	Long Term Debt LongTermDebt	7860984000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	7617563000	USD
CY2019Q2	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	18900000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Other Carrying Amount RedeemableNoncontrollingInterestEquityOtherCarryingAmount	19800000	USD
CY2017Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.0625
CY2017Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.10
CY2018Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.10
	us-gaap	Share Based Compensation ShareBasedCompensation	25200000	USD
CY2018Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.125
CY2019Q2	us-gaap	Share Based Compensation ShareBasedCompensation	13100000	USD
CY2018Q2	us-gaap	Share Based Compensation ShareBasedCompensation	12800000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	24900000	USD
CY2019Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3400000	USD
CY2018Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	3100000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6300000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	6000000.0	USD
CY2019Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	99400000	USD
CY2019Q2	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y
CY2019Q2	jef	Potential Maximum Increase To Common Shares Outstanding From Restricted Stock And Other Shares PotentialMaximumIncreaseToCommonSharesOutstandingFromRestrictedStockAndOtherShares	21484000	shares
CY2019Q2	jef	Restricted Cash Awards Compensation Cost Not Yet Recognized RestrictedCashAwardsCompensationCostNotYetRecognized	550900000	USD
CY2019Q2	jef	Restricted Cash Awards Compensation Cost Not Yet Recognized Period For Recognition RestrictedCashAwardsCompensationCostNotYetRecognizedPeriodForRecognition	P3Y
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-542447000	USD
	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-14569000	USD
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CY2019Q1	jef	Lodged Tax Effect LodgedTaxEffect	544600000	USD
CY2019Q2	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2019Q2	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	750206000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	834553000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1320193000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1562969000	USD
CY2019Q2	jef	Revenue Other Sources RevenueOtherSources	760165000	USD
CY2018Q2	jef	Revenue Other Sources RevenueOtherSources	409273000	USD
	jef	Revenue Other Sources RevenueOtherSources	1385190000	USD
	jef	Revenue Other Sources RevenueOtherSources	841968000	USD
CY2019Q2	us-gaap	Revenues Revenues	1510371000	USD
CY2018Q2	us-gaap	Revenues Revenues	1243826000	USD
	us-gaap	Revenues Revenues	2705383000	USD
	us-gaap	Revenues Revenues	2404937000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	750206000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	750206000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	834553000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	834553000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1320193000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1320193000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1562969000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1562969000	USD
CY2019Q2	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	289900000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	250600000	USD
CY2019Q2	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	21000000.0	USD
CY2018Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	14200000	USD
CY2019Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	1800000	USD
CY2018Q2	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	9600000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	9400000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	14500000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	3700000	USD
CY2018Q4	us-gaap	Capitalized Contract Cost Net CapitalizedContractCostNet	4700000	USD
CY2019Q2	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1800000	USD
CY2018Q2	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1200000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	3400000	USD
	us-gaap	Capitalized Contract Cost Amortization CapitalizedContractCostAmortization	1300000	USD
CY2019Q2	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	260000000.0	USD
CY2019Q2	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	61600000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	251400000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	54100000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-486500000	USD
	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
CY2019Q2	jef	Recognition Of Accumulated Other Comprehensive Income Lodged Taxes RecognitionOfAccumulatedOtherComprehensiveIncomeLodgedTaxes	544600000	USD
	jef	Tax Cuts And Jobs Actof2017 Measurement Period Adjustment Income Tax Expense Benefit TaxCutsAndJobsActof2017MeasurementPeriodAdjustmentIncomeTaxExpenseBenefit	-6700000	USD
	jef	Income Tax Expense Benefit From Reversalof Valuation Allowance IncomeTaxExpenseBenefitFromReversalofValuationAllowance	-43900000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	670764000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	725529000	USD
	us-gaap	Net Income Loss NetIncomeLoss	715575000	USD
	us-gaap	Net Income Loss NetIncomeLoss	850054000	USD
CY2019Q2	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	4086000	USD
CY2018Q2	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	3870000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	4241000	USD
	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	3831000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	666678000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	721659000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	711334000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	846223000	USD
CY2019Q2	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	43000	USD
CY2018Q2	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	37000	USD
	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	34000	USD
	us-gaap	Undistributed Earnings Diluted UndistributedEarningsDiluted	29000	USD
CY2019Q2	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	1276000	USD
CY2018Q2	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	0	USD
	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	2552000	USD
	us-gaap	Convertible Preferred Dividends Net Of Tax ConvertiblePreferredDividendsNetOfTax	0	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	667997000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	721696000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	713920000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	846252000	USD
CY2019Q2	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	293600000	shares
CY2018Q2	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	342719000	shares
	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	299067000	shares
	jef	Weighted Average Common Shares Outstanding WeightedAverageCommonSharesOutstanding	349647000	shares
CY2019Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	307010000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	352049000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	311108000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	359237000	shares
CY2019Q2	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	4162000	shares
CY2018Q2	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	0	shares
	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	4162000	shares
	jef	Incremental Common Shares Attributable To Redeemable Convertible Preferred Shares IncrementalCommonSharesAttributableToRedeemableConvertiblePreferredShares	0	shares
CY2019Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	312527000	shares
CY2018Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	356075000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	317736000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	362685000	shares
CY2019Q2	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1881600	shares
CY2018Q2	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1887100	shares
	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1856400	shares
	us-gaap	Incremental Common Shares Attributable To Participating Nonvested Shares With Non Forfeitable Dividend Rights IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights	1603500	shares
CY2019Q1	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	500000000.0	USD
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	17350000	shares
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	344500000	USD
CY2019Q2	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	155500000	USD
CY2019Q2	us-gaap	Contractual Obligation Future Minimum Payments Due Remainder Of Fiscal Year ContractualObligationFutureMinimumPaymentsDueRemainderOfFiscalYear	7446200000	USD
CY2019Q2	us-gaap	Contractual Obligation Due In Second Year ContractualObligationDueInSecondYear	380400000	USD
CY2019Q2	jef	Contractual Obligation Due In Third And Fourth Years ContractualObligationDueInThirdAndFourthYears	199100000	USD
CY2019Q2	jef	Contractual Obligation Due In Fifth And Sixth Years ContractualObligationDueInFifthAndSixthYears	5600000	USD
CY2019Q2	jef	Contractual Obligation Due In Seventh Year And Thereafter ContractualObligationDueInSeventhYearAndThereafter	23900000	USD
CY2019Q2	us-gaap	Contractual Obligation ContractualObligation	8055200000	USD
CY2019Q2	jef	Outstanding Loan Commitmentsto Clients OutstandingLoanCommitmentstoClients	60600000	USD
CY2019Q2	jef	Derivative Contracts Meeting Definitionof A Guarantee DerivativeContractsMeetingDefinitionofAGuarantee	239300000	USD
CY2018Q2	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax Attributable To Parent DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTaxAttributableToParent	85500000	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Before Income Tax Attributable To Parent DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodBeforeIncomeTaxAttributableToParent	140000000.0	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	Segment
CY2019Q2	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1101657000	USD
CY2018Q2	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	911159000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1930100000	USD
	us-gaap	Revenues Net Of Interest Expense RevenuesNetOfInterestExpense	1806594000	USD
CY2019Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	183479000	USD
CY2018Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	37515000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	232796000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	75278000	USD
CY2019Q2	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36786000	USD
CY2018Q2	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	31905000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	70720000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	60065000	USD

Files In Submission

Name	View Source	Status
0000096223-19-000033-index-headers.html	Edgar Link	pending
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FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
jef-20190531.xsd	Edgar Link	pending
jef-20190531_cal.xml	Edgar Link	unprocessable
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$JEF
Jefferies Financial Group Inc. Stock $jef

2019 Q2 Form 10-Q Financial Statement

#000009622319000033 Filed on July 09, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JEF Jefferies Financial Group Inc. Stock $jef

2019 Q2 Form 10-Q Financial Statement

#000009622319000033 Filed on July 09, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$JEF
Jefferies Financial Group Inc. Stock $jef