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Earnings per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Schedule Of Net Income Attributable To Common Stockholders



		Three Months Ended September 30,								Nine Months Ended September 30,
		2014				2013				2014				2013
Net income attributable to Westlake Chemical Corporation		$	167,757			$	170,290			$	495,232			$	439,453
Less:
Net income attributable to participating securities		(353		)		(587		)		(1,099		)		(1,691		)
Net income attributable to common shareholders		$	167,404			$	169,703			$	494,133			$	437,762

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 September 30,								Nine Months Ended September 30,
		2014				2013				2014				2013
Weighted average common shares—basic ⁽¹⁾		133,299,458				133,257,494				133,199,304				133,256,054
Plus incremental shares from:
Assumed exercise of options ⁽¹⁾		546,601				553,614				543,841				550,704
Weighted average common shares—diluted ⁽¹⁾		133,846,059				133,811,108				133,743,145				133,806,758

Earnings per common share attributable to Westlake Chemical Corporation : ⁽¹⁾
Basic		$	1.26			$	1.28			$	3.71			$	3.29
Diluted		$	1.25			$	1.27			$	3.69			$	3.27