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Earnings Per Share
 6 Months Ended
Jun. 30, 2019
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)
2019
 
2018
 
2019
 
2018
Net income attributable to common shareowners
$
1,900

 
$
2,048

 
$
3,246

 
$
3,345

Basic weighted average number of shares outstanding
854.4

 
790.5

 
853.8

 
790.2

Stock awards and equity units (share equivalent)
9.3

 
9.1

 
8.5

 
9.8

Diluted weighted average number of shares outstanding
863.7

 
799.6

 
862.3

 
800.0

Earnings Per Share of Common Stock:
 
 
 
 
 
 
 
Basic
$
2.22

 
$
2.59

 
$
3.80

 
$
4.23

Diluted
$
2.20

 
$
2.56

 
$
3.76

 
$
4.18


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. In addition, the computation of diluted earnings per share excludes the effect of the potential exercise of stock awards when the awards’ assumed proceeds exceed the average market price of the common shares during the period. For the quarter and six months ended June 30, 2019, the number of stock awards excluded from the computation was approximately 11.0 million and 13.0 million, respectively. For the quarter and six months ended June 30, 2018, the number of stock awards excluded from the computation was approximately 5.1 million.