Earnings Per Common Share - Reconciliation of Basic and Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic:
Net income attributable to Intercontinental Exchange, Inc.	$ 448	$ 529	$ 472	$ 484	$ 611	$ 458	$ 455	$ 464	$ 1,933	$ 1,988	$ 2,526
Weighted average common shares outstanding (in shares)									561	575	589
Basic earnings per common share (in dollars per share)	$ 0.81	$ 0.95	$ 0.84	$ 0.85	$ 1.07	$ 0.80	$ 0.79	$ 0.80	$ 3.44	$ 3.46	$ 4.29
Diluted:
Weighted average common shares outstanding (in shares)									561	575	589
Effect of dilutive securities - stock options and restricted stock (in shares)									4	4	5
Diluted weighted average common shares outstanding (in shares)									565	579	594
Diluted earnings per common share (in dollars per share)	$ 0.80	$ 0.94	$ 0.84	$ 0.85	$ 1.07	$ 0.79	$ 0.78	$ 0.79	$ 3.42	$ 3.43	$ 4.25