Guarantor Disclosures (Tables)

9 Months Ended

Sep. 30, 2015

Guarantees [Abstract]

Condensed Consolidating Financial Information Balance Sheet

Condensed Consolidating Financial Information as of September 30, 2015

	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	647,646	$	5,445	$	149,482	$	159,352	$	—		$	961,925
Marketable securities	285,726		—		—		—		—			285,726
Accounts receivable, net	9,371		2,165,248		58,514		135,837		(1,848,010		)	520,960
Inventories	—		333,553		3,272		93,181		—			430,006
Prepaid expenses and other current assets	1,355		15,244		382		3,576		(2,285		)	18,272
Deferred income taxes	441		30,529		—		647		(76		)	31,541
Total current assets	944,539		2,550,019		211,650		392,593		(1,850,371		)	2,248,430
Property, plant and equipment, net	—		1,533,456		962,221		420,953		—			2,916,630
Equity investments	4,879,268		1,204,734		—		468,760		(6,543,169		)	9,593
Other assets, net	17,541		353,506		46,542		133,196		(201,033		)	349,752
Total assets	$	5,841,348	$	5,641,715	$	1,220,413	$	1,415,502	$	(8,594,573	)	$	5,524,405
Current liabilities
Accounts and notes payable	$	1,847,047	$	131,438	$	33,476	$	80,685	$	(1,847,874	)	$	244,772
Accrued liabilities	16,105		168,569		21,055		86,883		(2,497		)	290,115
Total current liabilities	1,863,152		300,007		54,531		167,568		(1,850,371		)	534,887
Long-term debt	753,197		10,889		195,154		—		(195,154		)	764,086
Deferred income taxes	—		503,102		1,489		36,112		(5,879		)	534,824
Other liabilities	—		49,174		—		121,596		—			170,770
Total liabilities	2,616,349		863,172		251,174		325,276		(2,051,404		)	2,004,567
Total Westlake Chemical Corporation stockholders' equity	3,224,999		4,778,543		969,239		795,387		(6,543,169		)	3,224,999
Noncontrolling interests	—		—		—		294,839		—			294,839
Total equity	3,224,999		4,778,543		969,239		1,090,226		(6,543,169		)	3,519,838
Total liabilities and equity	$	5,841,348	$	5,641,715	$	1,220,413	$	1,415,502	$	(8,594,573	)	$	5,524,405

Condensed Consolidating Financial Information as of December 31, 2014

	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	655,947	$	3,057	$	131,545	$	90,052	$	—		$	880,601
Accounts receivable, net	8,451		1,454,709		56,049		135,133		(1,093,676		)	560,666
Inventories	—		414,975		6,634		104,167		—			525,776
Prepaid expenses and other current assets	172		9,485		212		1,938		—			11,807
Deferred income taxes	409		29,832		—		2,196		—			32,437
Total current assets	664,979		1,912,058		194,440		333,486		(1,093,676		)	2,011,287
Property, plant and equipment, net	—		1,477,515		842,057		437,985		—			2,757,557
Equity investments	4,033,378		1,237,080		—		352,550		(5,561,703		)	61,305
Other assets, net	30,543		387,325		57,733		141,948		(233,708		)	383,841
Total assets	$	4,728,900	$	5,013,978	$	1,094,230	$	1,265,969	$	(6,889,087	)	$	5,213,990
Current liabilities
Accounts payable	$	1,055,527	$	160,834	$	17,680	$	95,856	$	(1,068,835	)	$	261,062
Accrued liabilities	8,754		203,608		11,225		77,372		(24,841		)	276,118
Total current liabilities	1,064,281		364,442		28,905		173,228		(1,093,676		)	537,180
Long-term debt	753,108		10,889		227,638		—		(227,638		)	763,997
Deferred income taxes	—		497,919		1,848		42,369		(6,070		)	536,066
Other liabilities	—		43,452		—		131,407		—			174,859
Total liabilities	1,817,389		916,702		258,391		347,004		(1,327,384		)	2,012,102
Total Westlake Chemical Corporation stockholders' equity	2,911,511		4,097,276		835,839		628,588		(5,561,703		)	2,911,511
Noncontrolling interests	—		—		—		290,377		—			290,377
Total equity	2,911,511		4,097,276		835,839		918,965		(5,561,703		)	3,201,888
Total liabilities and equity	$	4,728,900	$	5,013,978	$	1,094,230	$	1,265,969	$	(6,889,087	)	$	5,213,990

Condensed Consolidating Financial Information Statement Of Operations

Condensed Consolidating Financial Information for the Three Months Ended September 30, 2015

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	961,036		$	248,619		$	288,211		$	(309,829	)	$	1,188,037
Cost of sales	—			774,726			154,474			252,618			(305,057		)	876,761
Gross profit	—			186,310			94,145			35,593			(4,772		)	311,276
Selling, general and administrative expenses	804			41,429			4,941			14,846			(4,772		)	57,248
(Loss) income from operations	(804		)	144,881			89,204			20,747			—			254,028
Interest expense	(10,405		)	(3		)	(217		)	(95		)	2,509			(8,211		)
Other income (expense), net	1,239			3,971			(124		)	59			(2,509		)	2,636
(Loss) income before income taxes	(9,970		)	148,849			88,863			20,711			—			248,453
(Benefit from) provision for income taxes	(3,249		)	56,372			141			6,769			—			60,033
Equity in net income of subsidiaries	190,325			76,945			—			11,777			(279,047		)	—
Net income	183,604			169,422			88,722			25,719			(279,047		)	188,420
Net income attributable to noncontrolling interests	—			—			—			4,816			—			4,816
Net income attributable to Westlake Chemical Corporation	$	183,604		$	169,422		$	88,722		$	20,903		$	(279,047	)	$	183,604
Comprehensive income attributable to    Westlake Chemical Corporation	$	181,663		$	169,673		$	88,722		$	19,170		$	(277,565	)	$	181,663

Condensed Consolidating Financial Information for the Three Months Ended September 30, 2014

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,026,282		$	392,008		$	208,313		$	(373,376	)	$	1,253,227
Cost of sales	—			831,675			227,015			202,110			(369,093		)	891,707
Gross profit	—			194,607			164,993			6,203			(4,283		)	361,520
Selling, general and administrative expenses	399			36,445			8,014			14,184			(4,283		)	54,759
(Loss) income from operations	(399		)	158,162			156,979			(7,981		)	—			306,761
Interest expense	(10,343		)	(2		)	(2,137		)	(39		)	3,035			(9,486		)
Other income (expense), net	2,138			(2,942		)	486			683			(3,035		)	(2,670		)
(Loss) income before income taxes	(8,604		)	155,218			155,328			(7,337		)	—			294,605
(Benefit from) provision for income taxes	(3,088		)	93,366			36,309			(2,138		)	—			124,449
Equity in net income of subsidiaries	173,273			113,157			—			5,862			(292,292		)	—
Net income	167,757			175,009			119,019			663			(292,292		)	170,156
Net income attributable to noncontrolling interests	—			—			—			2,399			—			2,399
Net income (loss) attributable to Westlake Chemical Corporation	$	167,757		$	175,009		$	119,019		$	(1,736	)	$	(292,292	)	$	167,757
Comprehensive income (loss) attributable to    Westlake Chemical Corporation	$	131,456		$	175,137		$	119,019		$	(39,528	)	$	(254,628	)	$	131,456

Condensed Consolidating Financial Information Statement Of Cash Flows

Condensed Consolidating Financial Information as of September 30, 2015

	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	647,646	$	5,445	$	149,482	$	159,352	$	—		$	961,925
Marketable securities	285,726		—		—		—		—			285,726
Accounts receivable, net	9,371		2,165,248		58,514		135,837		(1,848,010		)	520,960
Inventories	—		333,553		3,272		93,181		—			430,006
Prepaid expenses and other current assets	1,355		15,244		382		3,576		(2,285		)	18,272
Deferred income taxes	441		30,529		—		647		(76		)	31,541
Total current assets	944,539		2,550,019		211,650		392,593		(1,850,371		)	2,248,430
Property, plant and equipment, net	—		1,533,456		962,221		420,953		—			2,916,630
Equity investments	4,879,268		1,204,734		—		468,760		(6,543,169		)	9,593
Other assets, net	17,541		353,506		46,542		133,196		(201,033		)	349,752
Total assets	$	5,841,348	$	5,641,715	$	1,220,413	$	1,415,502	$	(8,594,573	)	$	5,524,405
Current liabilities
Accounts and notes payable	$	1,847,047	$	131,438	$	33,476	$	80,685	$	(1,847,874	)	$	244,772
Accrued liabilities	16,105		168,569		21,055		86,883		(2,497		)	290,115
Total current liabilities	1,863,152		300,007		54,531		167,568		(1,850,371		)	534,887
Long-term debt	753,197		10,889		195,154		—		(195,154		)	764,086
Deferred income taxes	—		503,102		1,489		36,112		(5,879		)	534,824
Other liabilities	—		49,174		—		121,596		—			170,770
Total liabilities	2,616,349		863,172		251,174		325,276		(2,051,404		)	2,004,567
Total Westlake Chemical Corporation stockholders' equity	3,224,999		4,778,543		969,239		795,387		(6,543,169		)	3,224,999
Noncontrolling interests	—		—		—		294,839		—			294,839
Total equity	3,224,999		4,778,543		969,239		1,090,226		(6,543,169		)	3,519,838
Total liabilities and equity	$	5,841,348	$	5,641,715	$	1,220,413	$	1,415,502	$	(8,594,573	)	$	5,524,405

Condensed Consolidating Financial Information as of December 31, 2014

	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	655,947	$	3,057	$	131,545	$	90,052	$	—		$	880,601
Accounts receivable, net	8,451		1,454,709		56,049		135,133		(1,093,676		)	560,666
Inventories	—		414,975		6,634		104,167		—			525,776
Prepaid expenses and other current assets	172		9,485		212		1,938		—			11,807
Deferred income taxes	409		29,832		—		2,196		—			32,437
Total current assets	664,979		1,912,058		194,440		333,486		(1,093,676		)	2,011,287
Property, plant and equipment, net	—		1,477,515		842,057		437,985		—			2,757,557
Equity investments	4,033,378		1,237,080		—		352,550		(5,561,703		)	61,305
Other assets, net	30,543		387,325		57,733		141,948		(233,708		)	383,841
Total assets	$	4,728,900	$	5,013,978	$	1,094,230	$	1,265,969	$	(6,889,087	)	$	5,213,990
Current liabilities
Accounts payable	$	1,055,527	$	160,834	$	17,680	$	95,856	$	(1,068,835	)	$	261,062
Accrued liabilities	8,754		203,608		11,225		77,372		(24,841		)	276,118
Total current liabilities	1,064,281		364,442		28,905		173,228		(1,093,676		)	537,180
Long-term debt	753,108		10,889		227,638		—		(227,638		)	763,997
Deferred income taxes	—		497,919		1,848		42,369		(6,070		)	536,066
Other liabilities	—		43,452		—		131,407		—			174,859
Total liabilities	1,817,389		916,702		258,391		347,004		(1,327,384		)	2,012,102
Total Westlake Chemical Corporation stockholders' equity	2,911,511		4,097,276		835,839		628,588		(5,561,703		)	2,911,511
Noncontrolling interests	—		—		—		290,377		—			290,377
Total equity	2,911,511		4,097,276		835,839		918,965		(5,561,703		)	3,201,888
Total liabilities and equity	$	4,728,900	$	5,013,978	$	1,094,230	$	1,265,969	$	(6,889,087	)	$	5,213,990

Condensed Consolidating Financial Information for the Three Months Ended September 30, 2015

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	961,036		$	248,619		$	288,211		$	(309,829	)	$	1,188,037
Cost of sales	—			774,726			154,474			252,618			(305,057		)	876,761
Gross profit	—			186,310			94,145			35,593			(4,772		)	311,276
Selling, general and administrative expenses	804			41,429			4,941			14,846			(4,772		)	57,248
(Loss) income from operations	(804		)	144,881			89,204			20,747			—			254,028
Interest expense	(10,405		)	(3		)	(217		)	(95		)	2,509			(8,211		)
Other income (expense), net	1,239			3,971			(124		)	59			(2,509		)	2,636
(Loss) income before income taxes	(9,970		)	148,849			88,863			20,711			—			248,453
(Benefit from) provision for income taxes	(3,249		)	56,372			141			6,769			—			60,033
Equity in net income of subsidiaries	190,325			76,945			—			11,777			(279,047		)	—
Net income	183,604			169,422			88,722			25,719			(279,047		)	188,420
Net income attributable to noncontrolling interests	—			—			—			4,816			—			4,816
Net income attributable to Westlake Chemical Corporation	$	183,604		$	169,422		$	88,722		$	20,903		$	(279,047	)	$	183,604
Comprehensive income attributable to    Westlake Chemical Corporation	$	181,663		$	169,673		$	88,722		$	19,170		$	(277,565	)	$	181,663

Condensed Consolidating Financial Information for the Three Months Ended September 30, 2014

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	1,026,282		$	392,008		$	208,313		$	(373,376	)	$	1,253,227
Cost of sales	—			831,675			227,015			202,110			(369,093		)	891,707
Gross profit	—			194,607			164,993			6,203			(4,283		)	361,520
Selling, general and administrative expenses	399			36,445			8,014			14,184			(4,283		)	54,759
(Loss) income from operations	(399		)	158,162			156,979			(7,981		)	—			306,761
Interest expense	(10,343		)	(2		)	(2,137		)	(39		)	3,035			(9,486		)
Other income (expense), net	2,138			(2,942		)	486			683			(3,035		)	(2,670		)
(Loss) income before income taxes	(8,604		)	155,218			155,328			(7,337		)	—			294,605
(Benefit from) provision for income taxes	(3,088		)	93,366			36,309			(2,138		)	—			124,449
Equity in net income of subsidiaries	173,273			113,157			—			5,862			(292,292		)	—
Net income	167,757			175,009			119,019			663			(292,292		)	170,156
Net income attributable to noncontrolling interests	—			—			—			2,399			—			2,399
Net income (loss) attributable to Westlake Chemical Corporation	$	167,757		$	175,009		$	119,019		$	(1,736	)	$	(292,292	)	$	167,757
Comprehensive income (loss) attributable to    Westlake Chemical Corporation	$	131,456		$	175,137		$	119,019		$	(39,528	)	$	(254,628	)	$	131,456

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2015

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	2,862,400		$	758,715		$	784,219		$	(928,764	)	$	3,476,570
Cost of sales	—			2,260,454			473,815			707,171			(913,873		)	2,527,567
Gross profit	—			601,946			284,900			77,048			(14,891		)	949,003
Selling, general and administrative expenses	1,617			127,794			15,178			40,623			(14,891		)	170,321
(Loss) income from operations	(1,617		)	474,152			269,722			36,425			—			778,682
Interest expense	(31,726		)	(8		)	(2,449		)	(190		)	7,613			(26,760		)
Other income (expense), net	17,627			(2,574		)	(85		)	26,435			(7,613		)	33,790
(Loss) income before income taxes	(15,716		)	471,570			267,188			62,670			—			785,712
(Benefit from) provision for income taxes	(5,226		)	231,542			567			9,941			—			236,824
Equity in net income of subsidiaries	545,531			233,635			—			32,986			(812,152		)	—
Net income	535,041			473,663			266,621			85,715			(812,152		)	548,888
Net income attributable to noncontrolling interests	—			—			—			13,847			—			13,847
Net income attributable to Westlake Chemical Corporation	$	535,041		$	473,663		$	266,621		$	71,868		$	(812,152	)	$	535,041
Comprehensive income attributable to    Westlake Chemical Corporation	$	492,609		$	474,292		$	266,621		$	28,683		$	(769,596	)	$	492,609

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2014

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	2,809,844		$	1,476,157		$	229,183		$	(1,235,705	)	$	3,279,479
Cost of sales	—			2,476,608			832,304			221,233			(1,205,167		)	2,324,978
Gross profit	—			333,236			643,853			7,950			(30,538		)	954,501
Selling, general and administrative expenses	1,474			123,050			21,957			16,954			(30,538		)	132,897
(Loss) income from operations	(1,474		)	210,186			621,896			(9,004		)	—			821,604
Interest expense	(29,032		)	(8		)	(9,833		)	(39		)	10,730			(28,182		)
Other income (expense), net	14,488			(1,729		)	3,135			(724		)	(10,730		)	4,440
(Loss) income before income taxes	(16,018		)	208,449			615,198			(9,767		)	—			797,862
(Benefit from) provision for income taxes	(5,686		)	109,920			198,461			(2,464		)	—			300,231
Equity in net income of subsidiaries	505,564			410,875			—			5,862			(922,301		)	—
Net income (loss)	495,232			509,404			416,737			(1,441		)	(922,301		)	497,631
Net income attributable to noncontrolling interests	—			—			—			2,399			—			2,399
Net income (loss) attributable to Westlake Chemical Corporation	$	495,232		$	509,404		$	416,737		$	(3,840	)	$	(922,301	)	$	495,232
Comprehensive income (loss) attributable to    Westlake Chemical Corporation	$	461,415		$	509,787		$	416,737		$	(41,722	)	$	(884,802	)	$	461,415

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2015

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income	$	535,041		$	473,663		$	266,621		$	85,715		$	(812,152	)	$	548,888
Adjustments to reconcile net income to net cash (used for)    provided by operating activities
Depreciation and amortization	1,504			90,247			60,637			29,345			—			181,733
Deferred income taxes	87			4,184			(359		)	3,673			—			7,585
Net changes in working capital and other	(567,137		)	(251,423		)	9,315			100,187			812,152			103,094
Net cash (used for) provided by operating activities	(30,505		)	316,671			336,214			218,920			—			841,300
Cash flows from investing activities
Acquisition of business, net of cash acquired	—			—			—			15,782			—			15,782
Additions to property, plant and equipment	—			(148,055		)	(152,572		)	(28,609		)	—			(329,236		)
Proceeds from disposition of assets	—			—			—			17			—			17
Proceeds from disposition of equity method investment	—			27,865			—			—			—			27,865
Proceeds from sales and maturities of securities	16,056			—			—			—			—			16,056
Purchase of securities	(282,542		)	—			—			—			—			(282,542		)
Settlements of derivative instruments	—			(1,535		)	—			—			—			(1,535		)
Net cash used for investing activities	(266,486		)	(121,725		)	(152,572		)	(12,810		)	—			(553,593		)
Cash flows from financing activities
Intercompany financing	467,360			(577,898		)	102,857			7,681			—			—
Intercompany financing—OpCo	—			135,341			(135,341		)	—			—			—
Dividends paid	(67,852		)	—			—			—			—			(67,852		)
Distributions paid	—			249,999			(268,562		)	7,581			—			(10,982		)
Purchase of limited partner interests	—			—			135,341			(135,341		)	—			—
Proceeds from exercise of stock options	984			—			—			—			—			984
Proceeds from issuance of notes payable	—			—			—			19,483			—			19,483
Repayment of notes payable	—			—			—			(32,954		)	—			(32,954		)
Repurchase of common stock for treasury	(114,254		)	—			—			—			—			(114,254		)
Windfall tax benefits from share-based payment arrangements	2,452			—			—			—			—			2,452
Net cash provided by (used for) financing activities	$	288,690		$	(192,558	)	$	(165,705	)	$	(133,550	)	$	—		$	(203,123	)

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries		OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries			Eliminations		Consolidated
Effect of exchange rate changes on cash and cash equivalents	$	—		$	—	$	—	$	(3,260	)	$	—	$	(3,260	)
Net (decrease) increase in cash and cash equivalents	(8,301		)	2,388		17,937		69,300			—		81,324
Cash and cash equivalents at beginning of period	655,947			3,057		131,545		90,052			—		880,601
Cash and cash equivalents at end of period	$	647,646		$	5,445	$	149,482	$	159,352		$	—	$	961,925

Condensed Consolidating Financial Information for the Nine Months Ended September 30, 2014

	Westlake Chemical Corporation			100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)			Non- Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income (loss)	$	495,232		$	509,404		$	416,737		$	(1,441	)	$	(922,301	)	$	497,631
Adjustments to reconcile net income (loss) to net cash (used for)    provided by operating activities
Depreciation and amortization	1,172			82,597			58,501			7,296			—			149,566
Deferred income taxes	(418		)	26,991			8,267			(381		)	—			34,459
Net changes in working capital and other	(509,862		)	(919,521		)	1,641			599,909			922,301			94,468
Net cash (used for) provided by operating activities	(13,876		)	(300,529		)	485,146			605,383			—			776,124
Cash flows from investing activities
Acquisition of business	—			—			—			(611,087		)	—			(611,087		)
Additions to property, plant and equipment	—			(160,147		)	(144,348		)	(6,688		)	—			(311,183		)
Proceeds from disposition of assets	—			144			—			1			—			145
Proceeds from repayment of loan acquired	—			—			—			45,923			—			45,923
Proceeds from sales and maturities of securities	342,045			—			—			—			—			342,045
Purchase of securities	(117,332		)	—			—			—			—			(117,332		)
Settlements of derivative instruments	—			(556		)	(133		)	—			—			(689		)
Net cash provided by (used for) investing activities	224,713			(160,559		)	(144,481		)	(571,851		)	—			(652,178		)
Cash flows from financing activities
Intercompany financing	75,104			(143,325		)	62,221			6,000			—			—
Net distributions prior to Westlake Partners initial public offering	—			448,101			(448,101		)	—			—			—
Capitalized debt issuance costs	(1,167		)	—			—			—			—			(1,167		)
Dividends paid	(55,690		)	151,729			(151,729		)	—			—			(55,690		)
Net proceeds from issuance of Westlake Partners common units	—			—			—			286,088			—			286,088
Purchase of limited partner interests	—			—			286,088			(286,088		)	—			—
Proceeds from exercise of stock options	5,502			—			—			—			—			5,502
Repurchase of common stock for treasury	(9,495		)	—			—			—			—			(9,495		)
Windfall tax benefits from share-based payment arrangements	6,670			—			—			—			—			6,670
Net cash provided by (used for) financing activities	$	20,924		$	456,505		$	(251,521	)	$	6,000		$	—		$	231,908

	Westlake Chemical Corporation		100% Owned Guarantor Subsidiaries			OpCo (Less Than 100% Owned Guarantor Subsidiary)		Non- Guarantor Subsidiaries			Eliminations		Consolidated
Effect of exchange rate changes on cash and cash equivalents	$	—	$	—		$	—	$	(3,687	)	$	—	$	(3,687	)
Net increase (decrease) in cash and cash equivalents	231,761		(4,583		)	89,144		35,845			—		352,167
Cash and cash equivalents at beginning of period	420,948		6,227			—		34,126			—		461,301
Cash and cash equivalents at end of period	$	652,709	$	1,644		$	89,144	$	69,971		$	—	$	813,468