XML 66 R46.htm IDEA: XBRL DOCUMENT v3.8.0.1
Earnings per Share (Tables)
 12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Schedule Of Net Income Attributable To Common Stockholders
Diluted earnings per share include the effect of certain stock options.
 
 
Year Ended December 31,
 
 
2017
 
2016
 
2015
Net income attributable to Westlake Chemical Corporation
 
$
1,304

 
$
399

 
$
646

Less:
 
 
 
 
 
 
Net income attributable to participating securities
 
(7
)
 
(2
)
 
(3
)
Net income attributable to common shareholders
 
$
1,297

 
$
397

 
$
643
Reconciliation Of Denominator For Basic And Diluted Earnings (Loss) Per Share
The following table reconciles the denominator for the basic and diluted earnings per share computations shown in the consolidated statements of operations:
 
 
Year Ended December 31,
 
 
2017
 
2016
 
2015
Weighted average common shares—basic
 
129,087,043

 
129,367,712

 
131,823,707

Plus incremental shares from:
 
 
 
 
 
 
Assumed exercise of options
 
452,970

 
607,110

 
478,105

Weighted average common shares—diluted
 
129,540,013

 
129,974,822

 
132,301,812

 
 
 
 
 
 
 
Earnings per common share attributable to
   Westlake Chemical Corporation:
 
 
 
 
 
 
Basic
 
$
10.05

 
$
3.07

 
$
4.88

Diluted
 
$
10.00

 
$
3.06

 
$
4.86