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Earnings Per Share (Tables)
 3 Months Ended
Mar. 31, 2019
Earnings Per Share [Abstract]  
Schedule of computation of basic and diluted earnings per share The following table shows the computation of basic and diluted earnings per share:
 
Three Months Ended March 31,
(in millions, except per share data)
2019
2018
Net income
$
730

$
557

 
 
 
Basic weighted average shares outstanding
665

704

Dilutive effect of share-based awards
2

2

Diluted weighted average shares outstanding
667

706

 
 
 
Basic earnings per share
$
1.10

$
0.79

Diluted earnings per share
$
1.09

$
0.79