Consolidated Statements of Change in Equity, AOCI (USD $) In Millions, except Share data	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest in Consolidated Subsidiaries [Member]	Redeemable Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2011	$ 3,162	$ 1	$ (645)	$ 1,829	$ 1,957	$ (21)	$ 41	$ 0
Beginning Balance, Shares at Dec. 31, 2011		79,000,000	(7,000,000)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	73
Other comprehensive loss	(31)					(31)
Stock consideration issued for previous acquisition	7			7
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises	154,242
Repurchases of common stock, Shares	(416,858)		0
Repurchases of common stock	(53)		(53)
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises	(19)		(19)
Stock-based compensation	57			57
Tax benefits from stock option plans	9			9
Distributions of profits to non-controlling interest	(12)						(12)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent	(5)			(1)			(6)
Net income attributable to non-controlling interest					(10)		10
Net income	562				562
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(123)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(2)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	0
Accumulated Other Comprehensive Income (Loss), Net of Tax	(52)
Ending Balance at Dec. 31, 2012	3,677	1	(717)	1,903	2,509	(52)	33	0
Ending Balance, Shares at Dec. 31, 2012		80,000,000	(7,000,000)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	143
Other comprehensive loss	177					177
Stock consideration issued for NYSE Euronext acquisition		42,000,000
Stock consideration issued for previous acquisition	8,294		(53)	8,347
Exercise of common stock options	13			13
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises	430,677
Repurchases of common stock, Shares	(3,231,484)		(1,000,000)
Repurchases of common stock	(645)
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises	(24)		(24)
Stock-based compensation	69			69
Issuance of restricted stock		1,000,000
Tax benefits from stock option plans	8			8
Adjustment to redemption value of redeemable non-controlling interest	(6)				(6)			6
Acquisition of non-controlling interest	30						30
Acquisition of redeemable non-controlling interest	313
Distributions of profits to non-controlling interest	(12)						(12)
Purchase of subsidiary shares from non-controlling interest	(37)			(5)			(32)
Treasury shares retired in connection with formation of ICE Group, Shares		(8,000,000)	8,000,000
Treasury shares retired in connection with formation of ICE Group			741	(541)	(200)
Dividends paid to shareholders	75
Net income attributable to non-controlling interest	(3)				(16)		13	3
Net income	270				270
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	0
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(21)
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	3
Accumulated Other Comprehensive Income (Loss), Net of Tax	125
Ending Balance at Dec. 31, 2013	12,381	1	(53)	9,794	2,482	125	32	322
Ending Balance, Shares at Dec. 31, 2013	115,000,000	115,000,000	0
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	13
Other comprehensive loss	(171)					(171)
Stock consideration issued for NYSE Euronext acquisition		1,000,000
Stock consideration issued for previous acquisition	0		0	0
Exercise of common stock options	13			13
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises	240,676		0
Repurchases of common stock, Shares			(3,000,000)
Repurchases of common stock	645		645
Payments relating to treasury shares received for restricted stock tax payments and stock option exercises	(45)		(45)
Stock-based compensation	105			105
Tax benefits from stock option plans	26			26
Redeemable Non Controlling Interest, Acquisition								16
Adjustment to redemption value of redeemable non-controlling interest	46				46			(46)
Distributions of profits to non-controlling interest	(17)						(17)	16
Purchase of subsidiary shares from non-controlling interest	0			0			0	(129)
Dividends paid to shareholders	(299)				(299)
Net income attributable to non-controlling interest	(18)				(35)		17	18
Net income	1,016				1,016
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	55
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	0
Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax	(114)
Accumulated Other Comprehensive Income (Loss), Net of Tax	(46)
Ending Balance at Dec. 31, 2014	$ 12,392	$ 1	$ (743)	$ 9,938	$ 3,210	$ (46)	$ 32	$ 165
Ending Balance, Shares at Dec. 31, 2014	116,000,000	116,000,000	(3,000,000)