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Note 3. Earnings Per Common Share ("EPS") Earnings Per Common Share ("EPS") (Tables)
3 Months Ended
Mar. 31, 2019
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
Quarter ended
 
 
2019
 
2018
Net Income
 
$
262

 
$
433

 
 
 
 
 
Weighted-average common shares outstanding (for basic calculation)
 
308


332

Effect of dilutive share-based employee compensation
 
7

 
8

Weighted-average common and dilutive potential common shares outstanding (for diluted calculation)
 
315


340

 
 
 
 
 
Basic EPS
 
$
0.85

 
$
1.30

 
 
 
 
 
Diluted EPS
 
$
0.83

 
$
1.27

Unexercised employee stock options and stock appreciation rights (in millions) excluded from the diluted EPS computation(a)
 
1.3

 
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.