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.

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- Definition

Purchase Commitments Outstanding

+ References

No definition available.

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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.

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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
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-SubTopic 210
-Section S99
-Paragraph 1
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-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.

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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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 220
-Section S99
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Private Equity Related Funds
Related Party Transaction [Line Items]
Loans to and/or equity investments in related funds	$ 34.1		$ 34.1		$ 23.7
Net gains (losses) from private equity related funds	0.2	$ (0.4)	10.2	$ (9.8)
Officers and Employees
Related Party Transaction [Line Items]
Loans outstanding to related party	51.2		51.2		45.6
Berkadia \| Affiliated Entity \| Jefferies Group
Related Party Transaction [Line Items]
Purchase commitment	748.8		748.8		864.1
HRG \| Affiliated Entity \| Jefferies Group
Related Party Transaction [Line Items]
Revenue from related parties	3.0		3.0
FXCM \| Payables, expense accruals and other liabilities \| Affiliated Entity \| Jefferies Group
Related Party Transaction [Line Items]
OTC foreign exchange contracts	$ 12.3		$ 12.3		$ 17.0