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Earnings Per Share
 6 Months Ended
Jun. 30, 2018
Earnings Per Share [Abstract]  
Earnings Per Share [Text Block]
Earnings Per Share
 
Quarter Ended June 30,
Six Months Ended June 30,
(dollars in millions, except per share amounts; shares in millions)
2018
 
2017
2018
 
2017
Net income attributable to common shareowners
$
2,048

 
$
1,439

$
3,345

 
$
2,825

Basic weighted average number of shares outstanding
790.5

 
788.7

790.2

 
791.1

Stock awards and equity units
9.1

 
9.5

9.8

 
9.3

Diluted weighted average number of shares outstanding
799.6

 
798.2

800.0

 
800.4

Earnings Per Share of Common Stock:
 
 
 
 
 
 
Basic
$
2.59

 
$
1.83

$
4.23

 
$
3.57

Diluted
$
2.56

 
$
1.80

$
4.18

 
$
3.53


The computation of diluted earnings per share excludes the effect of the potential exercise of stock awards, including stock appreciation rights and stock options, when the average market price of the common stock is lower than the exercise price of the related stock awards during the period because the effect would be anti-dilutive. For both the quarter and six months ended June 30, 2018, the number of stock awards excluded from the computation was approximately 5.1 million. For the quarter and six months ended June 30, 2017, the number of stock awards excluded from the computation was approximately 5.8 million and 6.4 million, respectively.