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Segment And Geographic Information (Tables)

9 Months Ended

Sep. 30, 2018

Segment And Geographic Information [Abstract]

Segment Information



		Three Months Ended September 30,						Nine Months Ended September 30,
		2018			2017			2018			2017
		(in millions)
Net revenues
Electronic brokerage		$	444		$	367		$	1,352		$	1,015
Market making			16			30			59			61
Corporate			(21)			29			—			111
Total net revenues		$	439		$	426		$	1,411		$	1,187
Income before income taxes
Electronic brokerage		$	292		$	225		$	866		$	608
Market making			7			11			25			(35)
Corporate			(23)			32			(4)			112
Total income before income taxes		$	276		$	268		$	887		$	685







		September 30,			December 31,
		2018			2017

		(in millions)
Segment assets
Electronic brokerage		$	60,152		$	58,787
Market making			2,577			8,469
Corporate			(667)			(6,094)
Total assets		$	62,062		$	61,162



Schedule Of Total Net Revenues And Income Before Income Taxes By Geographic Area



		Three Months Ended September 30,						Nine Months Ended September 30,
		2018			2017			2018			2017
		(in millions)
Net revenues
United States		$	346		$	345		$	1,111		$	964
International			93			81			300			223
Total net revenues		$	439		$	426		$	1,411		$	1,187
Income before income taxes
United States		$	237		$	234		$	762		$	615
International			39			34			125			70
Total income before income taxes		$	276		$	268		$	887		$	685



X

- Definition

Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph a
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Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 30
-URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599

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-Publisher FASB
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-Topic 280
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-Section 50
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-Publisher FASB
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