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.

No definition available.

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

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- Definition

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959

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Derivative Financial Instruments - Gain (Loss) Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Derivative instruments not designated as hedging instruments \| Trading revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	$ 8,786	$ 44,428	$ 60,315	$ 93,773
Derivative instruments not designated as hedging instruments \| Foreign currency, Futures contracts \| Trading revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	1,964	1,868	3,529	2,674
Derivative instruments not designated as hedging instruments \| Foreign currency, Forward contracts \| Investment income and other, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	0	0	0	(10)
Derivative instruments not designated as hedging instruments \| Equity, Futures contracts \| Trading revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	(5,008)	13,849	6,395	27,587
Derivative instruments not designated as hedging instruments \| Equity, Swap contracts \| Trading revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	(232)	1,792	2,480	2,860
Derivative instruments not designated as hedging instruments \| Equity, Listed options \| Trading revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	(557)	1,149	(222)	(15,032)
Derivative instruments not designated as hedging instruments \| Fixed income, Futures contracts \| Trading revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	2,670	10,918	16,627	35,839
Derivative instruments not designated as hedging instruments \| Commodity, Futures contracts \| Trading revenues, net
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	9,949	14,852	31,506	39,855
Derivative instruments designated as hedging instruments \| Foreign currency, Forward contracts \| Accumulated other comprehensive income
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Recognized	$ (197)	$ (44)	$ (571)	$ (50)