Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Basic:
Net income attributable to Intercontinental Exchange, Inc.	$ 484	$ 464
Weighted average common shares outstanding (in shares)	568,000	582,000
Basic earnings per common share (in dollars per share)	$ 0.85	$ 0.80
Diluted:
Weighted average common shares outstanding (in shares)	568,000	582,000
Effect of dilutive securities - stock options and restricted (in shares) shares	2,000	4,000
Diluted weighted average common shares outstanding (in shares)	570,000	586,000
Diluted earnings per common share (in dollars per share)	$ 0.85	$ 0.79
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	813	302