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Earnings Per Common Share ("EPS")
 12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Common Share (EPS) Earnings Per Common Share (“EPS”)

 
 
2019
 
2018
 
2017
Net Income
 
$
1,294


$
1,542


$
1,340

Weighted-average common shares outstanding (for basic calculation)
 
306

 
322

 
347

Effect of dilutive share-based employee compensation
 
7

 
7

 
8

Weighted-average common and dilutive potential common shares outstanding (for diluted calculation)
 
313

 
329

 
355

 
 
 
 
 
 
 
Basic EPS
 
$
4.23


$
4.80


$
3.86

 
 
 
 
 
 
 
Diluted EPS
 
$
4.14


$
4.69


$
3.77

Unexercised employee stock options and stock appreciation rights (in millions) excluded from the diluted EPS computation(a)
 
2.0

 
2.0

 
2.3


(a)
These unexercised employee stock options and stock appreciation rights were not included in the computation of diluted EPS because to do so would have been antidilutive for the periods presented.