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Earnings Per Common Share ("EPS")
 3 Months Ended
Mar. 31, 2020
Earnings Per Share [Abstract]  
Earnings Per Common Share (EPS) Earnings Per Common Share (“EPS”)
 
 
Quarter ended
 
 
2020
 
2019
Net Income
 
$
83

 
$
262

 
 
 
 
 
Weighted-average common shares outstanding (for basic calculation)
 
302


308

Effect of dilutive share-based employee compensation
 
5

 
7

Weighted-average common and dilutive potential common shares outstanding (for diluted calculation)
 
307


315

 
 
 
 
 
Basic EPS
 
$
0.28

 
$
0.85

 
 
 
 
 
Diluted EPS
 
$
0.27

 
$
0.83

Unexercised employee stock options and stock appreciation rights (in millions) excluded from the diluted EPS computation(a)
 
4.2

 
1.3


(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.