Earnings and Dividends per Share (Tables)

3 Months Ended

Mar. 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.

	Three Months Ended March 31,
	2020		2019
Net income attributable to Westlake Chemical Corporation	$	145	$	72
Less:
Net income attributable to participating securities	—		(1		)
Net income attributable to common shareholders	$	145	$	71

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 March 31,
	2020		2019
Weighted average common shares—basic	128,237,364		128,528,480
Plus incremental shares from:
Assumed exercise of options and vesting of performance stock units	205,608		385,441
Weighted average common shares—diluted	128,442,972		128,913,921
Earnings per common share attributable to Westlake Chemical Corporation:
Basic	$	1.13	$	0.56
Diluted	$	1.13	$	0.55

Dividends Per Share

Dividends per Share

Dividends per common share for the three months ended March 31, 2020 and 2019 were as follows:

	Three Months Ended March 31,
	2020		2019
Dividends per common share	$	0.2625	$	0.2500