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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table presents the calculation of basic and diluted earnings per common share:
 
Years ended December 31,
(in millions, except per share data)
2019
 
2018
 
2017
Net earnings available to common stockholders
$
3,747

 
$
2,790

 
$
1,935

 
 
 
 
 
 
Weighted average common shares outstanding, basic
670.2

 
742.3

 
795.6

Effect of dilutive securities
3.3

 
4.6

 
4.1

Weighted average common shares outstanding, dilutive
673.5

 
746.9

 
799.7

 
 
 
 
 
 
Earnings per basic common share
$
5.59

 
$
3.76

 
$
2.43

Earnings per diluted common share
$
5.56

 
$
3.74

 
$
2.42