Earnings and Dividends per Share (Tables)

6 Months Ended

Jun. 30, 2021

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.

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Net income attributable to Westlake Chemical Corporation	$	522	$	15	$	764	$	160
Less:
Net income attributable to participating securities	(2)		(1)		(4)		(1)
Net income attributable to common shareholders	$	520	$	14	$	760	$	159

Reconciliation Of Denominator For Basic And Diluted Earnings Per Share

The following table reconciles the denominator for the basic and diluted earnings per share computations shown in the consolidated statements of operations:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Weighted average common shares—basic	128,142,997		127,680,478		128,049,852		127,958,921
Plus incremental shares from:
Assumed exercise of options and vesting of performance stock units	734,863		143,151		631,924		174,379
Weighted average common shares—diluted	128,877,860		127,823,629		128,681,776		128,133,300
Earnings per common share attributable to Westlake Chemical Corporation:
Basic	$	4.06	$	0.11	$	5.94	$	1.24
Diluted	$	4.04	$	0.11	$	5.91	$	1.24

Dividends Per Share

Dividends per Share

Dividends per common share for the three and six months ended June 30, 2021 and 2020 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Dividends per common share	$	0.2700	$	0.2625	$	0.5400	$	0.5250