Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 462	$ 427	$ 936	$ 938
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax (expense) benefit of $1 and ($7) for the six months ended June 30, 2018 and 2017, respectively, and $1 and ($7) for the three months ended June 30, 2018 and 2017, respectively	(75)	60	(42)	85
Change in fair value of available-for-sale securities	0	0	0	68
Reclassification of realized gain on available-for-sale investment to other income	0	0	0	(176)
Other comprehensive income (loss)	(75)	60	(42)	(23)
Comprehensive income	387	487	894	915
Comprehensive income attributable to non-controlling interest	(7)	(8)	(17)	(16)
Comprehensive income attributable to Intercontinental Exchange, Inc.	$ 380	$ 479	$ 877	$ 899