Income (loss) from private equity related funds

No definition available.

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- Definition

Loans to and/or equity investments in related funds

+ References

No definition available.

+ Details

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- Definition

Purchase Commitments Outstanding

+ References

No definition available.

+ Details

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- Definition

Related Party Transaction, Loan Receivables Purchased

+ References

No definition available.

+ Details

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- Definition

Related Party Transaction, Number Of Common Stock Exchanged With Related Party

+ References

No definition available.

+ Details

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- Definition

Related Party Transaction, Number Of Common Stock Exchanged With Related Party, Price Per Share

+ References

No definition available.

+ Details

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- Definition

Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into.

+ References

No definition available.

+ Details

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- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(e))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=114873854&loc=SL114874292-224272

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

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- Definition

Fair value portion of liabilities pertaining to principal and customer trading transactions, or which may be incurred with the objective of generating a profit from short-term fluctuations in price as part of an entity's market-making, hedging and proprietary trading. Examples include, but are not limited to, short positions in securities, derivatives and commodities.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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Related Party Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands	11 Months Ended	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2019	Dec. 31, 2017	Nov. 29, 2019
Related Party Transaction [Line Items]
Trading liabilities, at fair value	$ 9,478,946	$ 10,532,460
Private Equity Related Funds
Related Party Transaction [Line Items]
Loans to and/or equity investments in related funds	35,500	23,000
Net gains (losses) from private equity related funds	(12,100)	(5,700)	$ (10,700)
Officers and Employees
Related Party Transaction [Line Items]
Loans outstanding to related party	49,300	44,800
Berkadia \| Affiliated Entity \| Jefferies Group
Related Party Transaction [Line Items]
Purchase commitment	723,800	360,400
HRG \| Affiliated Entity \| Jefferies Group
Related Party Transaction [Line Items]
Revenue from related parties	3,000
FXCM \| Payables, expense accruals and other liabilities \| Affiliated Entity \| Jefferies Group
Related Party Transaction [Line Items]
OTC foreign exchange contracts	$ 9,900	9,900
Jefferies Finance \| Affiliated Entity
Related Party Transaction [Line Items]
Purchases of loan receivables		$ 65,300
Sale of Property
Related Party Transaction [Line Items]
Number of common stock exchanged with related party (in shares)				780,315
Number of common stock exchanged with related party, price per share (in USD per share)				$ 21.03