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Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Basic:        
Net income attributable to Intercontinental Exchange, Inc. $ 529 $ 458 $ 1,485 $ 1,377
Weighted average common shares outstanding (in shares) 559,000 572,000 563,000 577,000
Basic earnings per common share (in dollars per share) $ 0.95 $ 0.80 $ 2.64 $ 2.39
Diluted:        
Weighted average common shares outstanding (in shares) 559,000 572,000 563,000 577,000
Effect of dilutive securities - stock options and restricted (in shares) shares 4,000 4,000 3,000 4,000
Diluted weighted average common shares outstanding (in shares) 563,000 576,000 566,000 581,000
Diluted earnings per common share (in dollars per share) $ 0.94 $ 0.79 $ 2.62 $ 2.37
Employee Stock Option        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities (in shares)     437 451