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Earnings Per Common Share
12 Months Ended
Dec. 31, 2019
Earnings Per Share [Abstract]  
Earnings Per Common Share Earnings Per Common Share
($ in millions, except per share amounts)
2019

 
2018

 
2017

Earnings per common share (attributable to PPG)
Income from continuing operations, net of tax

$1,243

 

$1,323

 

$1,369

Income from discontinued operations, net of tax

 
18

 
225

Net income (attributable to PPG)

$1,243

 

$1,341

 

$1,594

Weighted average common shares outstanding
236.9

 
243.9

 
256.1

Effect of dilutive securities:
 

 
 

 
 

Stock options
0.6

 
0.8

 
0.9

Other stock compensation plans
0.7

 
0.7

 
0.8

Potentially dilutive common shares
1.3

 
1.5

 
1.7

Adjusted weighted average common shares outstanding
238.2

 
245.4

 
257.8

Earnings per common share (attributable to PPG):
 
 
 
 
 
Income from continuing operations, net of tax

$5.25

 

$5.43

 

$5.34

Income from discontinued operations, net of tax

 
0.07

 
0.88

Net income (attributable to PPG)

$5.25

 

$5.50

 

$6.22

Earnings per common share - assuming dilution (attributable to PPG)
Income from continuing operations, net of tax

$5.22

 

$5.40

 

$5.31

Income from discontinued operations, net of tax

 
0.07

 
0.87

Net income (attributable to PPG)

$5.22

 

$5.47

 

$6.18


There were 0.9 million, 1.0 million, and 0.6 million outstanding stock options excluded in 2019, 2018 and 2017, respectively, from the computation of earnings per diluted common share due to their anti-dilutive effect.