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Earnings Per Common Share (Tables)
9 Months Ended
Sep. 30, 2019
Earnings Per Share [Abstract]  
Reconciliation of Earnings Per Common Share
The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per common share computations for the nine and three months ended September 30, 2019 and 2018 (in millions, except per share amounts):
 
Nine Months Ended 
 September 30,
 
Three Months Ended September 30,
2019
 
2018
 
2019
 
2018
Basic:
 
 
 
 
 
 
 
Net income attributable to Intercontinental Exchange, Inc.
$
1,485

 
$
1,377

 
$
529

 
$
458

Weighted average common shares outstanding
563

 
577

 
559

 
572

Basic earnings per common share
$
2.64

 
$
2.39

 
$
0.95

 
$
0.80

Diluted:
 
 
 
 
 
 
 
Weighted average common shares outstanding
563

 
577

 
559

 
572

Effect of dilutive securities - stock options and restricted shares
3

 
4

 
4

 
4

Diluted weighted average common shares outstanding
566

 
581

 
563

 
576

Diluted earnings per common share
$
2.62

 
$
2.37

 
$
0.94

 
$
0.79