Earnings and Dividends per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings and Dividends Per Share [Abstract]

Schedule Of Net Income Attributable To Common Stockholders

Diluted earnings per share include the effects of certain stock options and performance stock units.


	Year Ended December 31,
	2020		2019		2018
Net income attributable to Westlake Chemical Corporation	$	330	$	421	$	996
Less:
Net income attributable to participating securities	(1)		(2)		(5)
Net income attributable to common shareholders	$	329	$	419	$	991

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,
	2020		2019		2018
Weighted average common shares—basic	127,850,592		128,395,184		129,401,823
Plus incremental shares from:
Assumed exercise of options and vesting of performance stock units	238,466		362,109		583,930
Weighted average common shares—diluted	128,089,058		128,757,293		129,985,753

Earnings per common share attributable to Westlake Chemical Corporation:
Basic	$	2.57	$	3.26	$	7.66
Diluted	$	2.56	$	3.25	$	7.62

Dividends Per Share

Dividends per Share

Dividends per common share for the years ended December 31, 2020, 2019 and 2018 were as follows:


	Year Ended December 31,
	2020		2019		2018
Dividends per common share	$	1.0650	$	1.0250	$	0.9200