Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic:
Net income attributable to Intercontinental Exchange, Inc.	$ 472	$ 455	$ 956	$ 919
Weighted average common shares outstanding (in shares)	563,000	578,000	565,000	580,000
Basic earnings per common share (in dollars per share)	$ 0.84	$ 0.79	$ 1.69	$ 1.59
Diluted:
Weighted average common shares outstanding (in shares)	563,000	578,000	565,000	580,000
Effect of dilutive securities - stock options and restricted (in shares) shares	3,000	3,000	3,000	3,000
Diluted weighted average common shares outstanding (in shares)	566,000	581,000	568,000	583,000
Diluted earnings per common share (in dollars per share)	$ 0.84	$ 0.78	$ 1.68	$ 1.58
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)			402	413