Earnings and Dividends per Share (Tables)

6 Months Ended

Jun. 30, 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.

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Net income attributable to Westlake Chemical Corporation	$	15		$	119		$	160		$	191
Less:
Net income attributable to participating securities	(1		)	(1		)	(1		)	(1		)
Net income attributable to common shareholders	$	14		$	118		$	159		$	190

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,
	2020		2019		2020		2019
Weighted average common shares—basic	127,680,478		128,485,182		127,958,921		128,506,712
Plus incremental shares from:
Assumed exercise of options and vesting of performance stock units	143,151		365,153		174,379		375,240
Weighted average common shares—diluted	127,823,629		128,850,335		128,133,300		128,881,952
Earnings per common share attributable to Westlake Chemical Corporation:
Basic	$	0.11	$	0.92	$	1.24	$	1.48
Diluted	$	0.11	$	0.92	$	1.24	$	1.47

Dividends Per Share

Dividends per Share

Dividends per common share for the three and six months ended June 30, 2020 and 2019 were as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Dividends per common share	$	0.2625	$	0.2500	$	0.5250	$	0.5000