10-K Filing

WESTLAKE CORP CIK: 1262823 FY 2018

Filing Information

Form Type	10-K
Accession Number	`0001262823-19-000012`
Period End Date	20181231
Filing Date	20190220
Fiscal Year	2018
Fiscal Period	FY
XBRL Instance	wlk-20181231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 80 Income Statement 110 Cash Flow Statement 120 Stockholders Equity 44 Comprehensive Income 50

Balance Sheet 80 line items

Line Item	Tag	Value	Unit	Period
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Preferred stock, shares authorized	`PreferredStockSharesAuthorized`	50.00M	shares	Point-in-time
Preferred stock, shares authorized	`PreferredStockSharesAuthorized`	50.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$753.00M	USD	Point-in-time
Preferred stock, shares issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$1.53B	USD	Point-in-time
Preferred stock, shares outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Preferred stock, shares outstanding	`PreferredStockSharesOutstanding`	0.00	shares	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.00B	USD	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.04B	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value per share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Inventories	`InventoryNet`	$900.00M	USD	Point-in-time
Inventories	`InventoryNet`	$1.01B	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$38.00M	USD	Point-in-time
Common Stock, shares authorized	`CommonStockSharesAuthorized`	300.00M	shares	Point-in-time
Common Stock, shares authorized	`CommonStockSharesAuthorized`	300.00M	shares	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$31.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$3.46B	USD	Point-in-time
Common Stock, Shares	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Common Stock, Shares	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Total current assets	`AssetsCurrent`	$2.84B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$6.41B	USD	Point-in-time
Common stock, held in treasury	`TreasuryStockShares`	6.18M	shares	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$6.59B	USD	Point-in-time
Common stock, held in treasury	`TreasuryStockShares`	5.23M	shares	Point-in-time
Goodwill	`Goodwill`	$1.01B	USD	Point-in-time
Goodwill	`Goodwill`	$1.00B	USD	Point-in-time
Goodwill	`Goodwill`	$947.00M	USD	Point-in-time
Customer relationships, net	`FiniteLivedIntangibleAssetsNet`	$616.00M	USD	Point-in-time
Customer relationships, net	`FiniteLivedIntangibleAssetsNet`	$525.00M	USD	Point-in-time
Other intangible assets, net	`OtherIntangibleAssetsNet`	$161.00M	USD	Point-in-time
Other intangible assets, net	`OtherIntangibleAssetsNet`	$134.00M	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$412.00M	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$504.00M	USD	Point-in-time
Total assets	`Assets`	$12.08B	USD	Point-in-time
Total assets	`Assets`	$11.60B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$507.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$600.00M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$676.00M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$657.00M	USD	Point-in-time
Current portion of long-term debt, net	`LongTermDebtCurrent`	-	USD	Point-in-time
Current portion of long-term debt, net	`LongTermDebtCurrent`	$710.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.97B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.18B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$3.13B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$2.67B	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$1.11B	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$1.16B	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$337.00M	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$344.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$158.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$179.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$6.71B	USD	Point-in-time
Total liabilities	`Liabilities`	$5.53B	USD	Point-in-time
Preferred stock, $0.01 par value, 50,000,000 shares authorized; no shares issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock, $0.01 par value, 50,000,000 shares authorized; no shares issued and outstanding	`PreferredStockValue`	-	USD	Point-in-time
Common stock, $0.01 par value, 300,000,000 shares authorized; 134,651,380 and 134,651,380 shares issued at December 31, 2018 and 2017, respectively	`CommonStockValue`	$1.00M	USD	Point-in-time
Common stock, $0.01 par value, 300,000,000 shares authorized; 134,651,380 and 134,651,380 shares issued at December 31, 2018 and 2017, respectively	`CommonStockValue`	$1.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,183,125 and 5,232,875 shares at December 31, 2018 and 2017, respectively	`TreasuryStockValue`	$302.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,183,125 and 5,232,875 shares at December 31, 2018 and 2017, respectively	`TreasuryStockValue`	$382.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$556.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$555.00M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$4.61B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.48B	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-121.00M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-62.00M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$7.00M	USD	Point-in-time
Total Westlake Chemical Corporation stockholders' equity	`StockholdersEquity`	$4.87B	USD	Point-in-time
Total Westlake Chemical Corporation stockholders' equity	`StockholdersEquity`	$5.59B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$486.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$495.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.89B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.37B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.56B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$12.08B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$11.60B	USD	Point-in-time

Income Statement 110 line items

Line Item	Tag	Value	Unit	Period
Net sales	`Revenues`	$1.94B	USD	1 Quarter
Net sales	`Revenues`	$2.00B	USD	1 Quarter
Net sales	`Revenues`	$2.11B	USD	1 Quarter
Net sales	`Revenues`	$2.01B	USD	1 Quarter
Net sales	`Revenues`	$8.63B	USD	Annual
Net sales	`Revenues`	$5.08B	USD	Annual
Net sales	`Revenues`	$8.04B	USD	Annual
Net sales	`Revenues`	$2.23B	USD	1 Quarter
Net sales	`Revenues`	$1.98B	USD	1 Quarter
Net sales	`Revenues`	$2.15B	USD	1 Quarter
Net sales	`Revenues`	$2.25B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$4.09B	USD	Annual
Cost of sales	`CostOfGoodsAndServicesSold`	$6.28B	USD	Annual
Cost of sales	`CostOfGoodsAndServicesSold`	$6.65B	USD	Annual
Gross profit	`GrossProfit`	$552.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$496.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$354.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$403.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$366.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$1.76B	USD	Annual
Gross profit	`GrossProfit`	$1.99B	USD	Annual
Gross profit	`GrossProfit`	$983.00M	USD	Annual
Gross profit	`GrossProfit`	$542.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$539.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$496.00M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$399.00M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$258.00M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$445.00M	USD	Annual
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$38.00M	USD	Annual
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$108.00M	USD	Annual
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$101.00M	USD	Annual
Transaction and integration-related costs	`BusinessCombinationIntegrationRelatedCosts`	$33.00M	USD	Annual
Transaction and integration-related costs	`BusinessCombinationIntegrationRelatedCosts`	$29.00M	USD	Annual
Transaction and integration-related costs	`BusinessCombinationIntegrationRelatedCosts`	$104.00M	USD	Annual
Income from operations	`OperatingIncomeLoss`	$1.23B	USD	Annual
Income from operations	`OperatingIncomeLoss`	$396.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$207.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$404.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$1.41B	USD	Annual
Income from operations	`OperatingIncomeLoss`	$363.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$364.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$234.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$264.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$583.00M	USD	Annual
Income from operations	`OperatingIncomeLoss`	$401.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$126.00M	USD	Annual
Interest expense	`InterestExpense`	$159.00M	USD	Annual
Interest expense	`InterestExpense`	$79.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$15.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$54.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$52.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$558.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.08B	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.33B	USD	Annual
Provision for (benefit from) income taxes	`IncomeTaxExpenseBenefit`	$-258.00M	USD	Annual
Provision for (benefit from) income taxes	`IncomeTaxExpenseBenefit`	$138.00M	USD	Annual
Provision for (benefit from) income taxes	`IncomeTaxExpenseBenefit`	$300.00M	USD	Annual
Net income	`ProfitLoss`	$131.00M	USD	1 Quarter
Net income	`ProfitLoss`	$816.00M	USD	1 Quarter
Net income	`ProfitLoss`	$288.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$159.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.34B	USD	Annual
Net income	`ProfitLoss`	$318.00M	USD	1 Quarter
Net income	`ProfitLoss`	$420.00M	USD	Annual
Net income	`ProfitLoss`	$297.00M	USD	1 Quarter
Net income	`ProfitLoss`	$145.00M	USD	1 Quarter
Net income	`ProfitLoss`	$219.00M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$38.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$35.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$21.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$399.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$211.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$278.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$138.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$153.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$802.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$996.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$123.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$1.30B	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$308.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$287.00M	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$3.07	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$2.36	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.07	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$10.05	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$6.18	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.18	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$2.13	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$7.66	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.95	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$2.21	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.62	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.06	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$10.00	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.06	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$6.15	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.35	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.95	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.17	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.12	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.61	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.20	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$7.62	USD	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	129.09M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	129.37M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	129.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	129.97M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	129.54M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	129.99M	shares	Annual

Cash Flow Statement 120 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$131.00M	USD	1 Quarter
Net income	`ProfitLoss`	$816.00M	USD	1 Quarter
Net income	`ProfitLoss`	$288.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$159.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.34B	USD	Annual
Net income	`ProfitLoss`	$318.00M	USD	1 Quarter
Net income	`ProfitLoss`	$420.00M	USD	Annual
Net income	`ProfitLoss`	$297.00M	USD	1 Quarter
Net income	`ProfitLoss`	$145.00M	USD	1 Quarter
Net income	`ProfitLoss`	$219.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$378.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$641.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$601.00M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$23.00M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$14.00M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$22.00M	USD	Annual
Gain realized on previously held shares of Axiall common stock and from sales of securities	`AvailableForSaleSecuritiesGrossRealizedGainLossNet`	-	USD	Annual
Gain realized on previously held shares of Axiall common stock and from sales of securities	`AvailableForSaleSecuritiesGrossRealizedGainLossNet`	$54.00M	USD	Annual
Gain realized on previously held shares of Axiall common stock and from sales of securities	`AvailableForSaleSecuritiesGrossRealizedGainLossNet`	-	USD	Annual
Loss from disposition of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-22.00M	USD	Annual
Loss from disposition of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-44.00M	USD	Annual
Loss from disposition of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-9.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$62.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$101.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-534.00M	USD	Annual
Other losses (gains), net	`OtherOperatingActivitiesCashFlowStatement`	$5.00M	USD	Annual
Other losses (gains), net	`OtherOperatingActivitiesCashFlowStatement`	$-3.00M	USD	Annual
Other losses (gains), net	`OtherOperatingActivitiesCashFlowStatement`	$-20.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$58.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$-50.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$40.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$62.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$32.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$123.00M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets`	$-11.00M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets`	$-26.00M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets`	$1.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-100.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$86.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$12.00M	USD	Annual
Accrued liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-8.00M	USD	Annual
Accrued liabilities	`IncreaseDecreaseInAccruedLiabilities`	$115.00M	USD	Annual
Accrued liabilities	`IncreaseDecreaseInAccruedLiabilities`	$48.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$75.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$65.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$84.00M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$867.00M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.41B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.53B	USD	Annual
Acquisition of business, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$13.00M	USD	Annual
Acquisition of business, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$2.44B	USD	Annual
Acquisition of business, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$629.00M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$577.00M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$702.00M	USD	Annual
Additions to investments in unconsolidated subsidiaries	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$68.00M	USD	Annual
Additions to investments in unconsolidated subsidiaries	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$66.00M	USD	Annual
Additions to investments in unconsolidated subsidiaries	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$17.00M	USD	Annual
Proceeds from sales and maturities of securities	`ProceedsFromSaleAndMaturityOfMarketableSecurities`	-	USD	Annual
Proceeds from sales and maturities of securities	`ProceedsFromSaleAndMaturityOfMarketableSecurities`	-	USD	Annual
Proceeds from sales and maturities of securities	`ProceedsFromSaleAndMaturityOfMarketableSecurities`	$663.00M	USD	Annual
Purchase of securities	`PaymentsToAcquireInvestments`	-	USD	Annual
Purchase of securities	`PaymentsToAcquireInvestments`	$138.00M	USD	Annual
Purchase of securities	`PaymentsToAcquireInvestments`	-	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-16.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$4.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-4.00M	USD	Annual
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-754.00M	USD	Annual
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-652.00M	USD	Annual
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.56B	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$6.00M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$36.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$97.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$120.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$103.00M	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$28.00M	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$17.00M	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$45.00M	USD	Annual
Proceeds from notes payable and drawdown of revolver	`ProceedsFromLongTermLinesOfCredit`	$978.00M	USD	Annual
Proceeds from notes payable and drawdown of revolver	`ProceedsFromLongTermLinesOfCredit`	$2.04B	USD	Annual
Proceeds from notes payable and drawdown of revolver	`ProceedsFromLongTermLinesOfCredit`	$14.00M	USD	Annual
Net proceeds from issuance of Westlake Chemical Partners LP common units	`ProceedsFromIssuanceOfCommonLimitedPartnersUnits`	-	USD	Annual
Net proceeds from issuance of Westlake Chemical Partners LP common units	`ProceedsFromIssuanceOfCommonLimitedPartnersUnits`	$111.00M	USD	Annual
Net proceeds from issuance of Westlake Chemical Partners LP common units	`ProceedsFromIssuanceOfCommonLimitedPartnersUnits`	-	USD	Annual
Net proceeds from issuance of Westlake Chemical Partners LP common units	`ProceedsFromIssuanceOfCommonLimitedPartnersUnits`	$111.00M	USD	Point-in-time
Net proceeds from issuance of Westlake Chemical Partners LP common units	`ProceedsFromIssuanceOfCommonLimitedPartnersUnits`	$286.00M	USD	Point-in-time
Repayment of term loan	`RepaymentsOfShortTermDebt`	$150.00M	USD	Annual
Repayment of term loan	`RepaymentsOfShortTermDebt`	-	USD	Annual
Repayment of term loan	`RepaymentsOfShortTermDebt`	-	USD	Annual
Repayment of revolver	`RepaymentsOfLinesOfCredit`	-	USD	Annual
Repayment of revolver	`RepaymentsOfLinesOfCredit`	$550.00M	USD	Annual
Repayment of revolver	`RepaymentsOfLinesOfCredit`	$125.00M	USD	Annual
Redemption and repayment of notes payable	`RepaymentsOfNotesPayable`	$1.18B	USD	Annual
Redemption and repayment of notes payable	`RepaymentsOfNotesPayable`	$257.00M	USD	Annual
Redemption and repayment of notes payable	`RepaymentsOfNotesPayable`	$13.00M	USD	Annual
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	$106.00M	USD	Annual
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	$67.00M	USD	Annual
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$9.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$5.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$11.00M	USD	Annual
Net cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-1.43B	USD	Annual
Net cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$1.69B	USD	Annual
Net cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$6.00M	USD	Annual
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-7.00M	USD	Annual
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$26.00M	USD	Annual
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-8.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-17.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-779.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$908.00M	USD	Annual
Cash, cash equivalents and restricted cash at beginning of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$663.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.55B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$646.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$775.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$663.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.55B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$646.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$775.00M	USD	Point-in-time

Stockholders Equity 44 line items

Line Item	Tag	Value	Unit	Period
Beginning Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.89B	USD	Point-in-time
Beginning Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Beginning Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.37B	USD	Point-in-time
Beginning Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.56B	USD	Point-in-time
Common Stock, Shares	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Common Stock, Shares	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	6.18M	shares	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	5.23M	shares	Point-in-time
Cumulative effect of accounting change	`CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption`	$1.00M	USD	Point-in-time
Net income	`ProfitLoss`	$131.00M	USD	1 Quarter
Net income	`ProfitLoss`	$816.00M	USD	1 Quarter
Net income	`ProfitLoss`	$288.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$159.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.34B	USD	Annual
Net income	`ProfitLoss`	$318.00M	USD	1 Quarter
Net income	`ProfitLoss`	$420.00M	USD	Annual
Net income	`ProfitLoss`	$297.00M	USD	1 Quarter
Net income	`ProfitLoss`	$145.00M	USD	1 Quarter
Net income	`ProfitLoss`	$219.00M	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$8.00M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$133.00M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$-84.00M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$106.00M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$67.00M	USD	Annual
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$11.00M	USD	Annual
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$8.00M	USD	Annual
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$9.00M	USD	Annual
Stock-based compensation (in shares)	`StockIssuedDuringPeriodSharesStockOptionsExercised`	323,182.00	shares	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$18.00M	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$7.00M	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$14.00M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$103.00M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$97.00M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$120.00M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$17.00M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$45.00M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$28.00M	USD	Annual
Issuance of Westlake Chemical Partners LP common units	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$68.00M	USD	Annual
Issuance of Westlake Chemical Partners LP common units	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$111.00M	USD	Annual
Ending Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.89B	USD	Point-in-time
Ending Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Ending Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.37B	USD	Point-in-time
Ending Balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.56B	USD	Point-in-time

Comprehensive Income 50 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$131.00M	USD	1 Quarter
Net income	`ProfitLoss`	$816.00M	USD	1 Quarter
Net income	`ProfitLoss`	$288.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$159.00M	USD	1 Quarter
Net income	`ProfitLoss`	$1.34B	USD	Annual
Net income	`ProfitLoss`	$318.00M	USD	1 Quarter
Net income	`ProfitLoss`	$420.00M	USD	Annual
Comprehensive income (loss), tax portion attributable to noncontrolling interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$4.00M	USD	Annual
Net income	`ProfitLoss`	$297.00M	USD	1 Quarter
Comprehensive income (loss), tax portion attributable to noncontrolling interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	-	USD	Annual
Net income	`ProfitLoss`	$145.00M	USD	1 Quarter
Net income	`ProfitLoss`	$219.00M	USD	1 Quarter
Comprehensive income (loss), tax portion attributable to noncontrolling interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$1.00M	USD	Annual
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$-19.00M	USD	Annual
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$-60.00M	USD	Annual
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$33.00M	USD	Annual
Amortization of benefits liability	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	-	USD	Annual
Amortization of benefits liability	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-1.00M	USD	Annual
Amortization of benefits liability	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-2.00M	USD	Annual
Income tax benefit (provision) on pension and other post-retirement benefits	`OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent`	$8.00M	USD	Annual
Income tax benefit (provision) on pension and other post-retirement benefits	`OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent`	$-24.00M	USD	Annual
Income tax benefit (provision) on pension and other post-retirement benefits	`OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent`	$-7.00M	USD	Annual
Foreign currency translation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-59.00M	USD	Annual
Foreign currency translation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$124.00M	USD	Annual
Foreign currency translation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-34.00M	USD	Annual
Income tax provision on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	-	USD	Annual
Income tax provision on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$5.00M	USD	Annual
Income tax provision on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	-	USD	Annual
Unrealized holding gains on investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax`	-	USD	Annual
Unrealized holding gains on investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax`	$62.00M	USD	Annual
Unrealized holding gains on investments	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeReclassificationAdjustmentsAndTax`	-	USD	Annual
Reclassification of net realized gains to net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax`	$54.00M	USD	Annual
Reclassification of net realized gains to net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax`	-	USD	Annual
Reclassification of net realized gains to net income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax`	-	USD	Annual
Income tax provision on available-for-sale investments	`OtherComprehensiveIncomeLossIncomeTaxProvisionBenefitOnAvailableForSaleInvestment`	$3.00M	USD	Annual
Income tax provision on available-for-sale investments	`OtherComprehensiveIncomeLossIncomeTaxProvisionBenefitOnAvailableForSaleInvestment`	-	USD	Annual
Income tax provision on available-for-sale investments	`OtherComprehensiveIncomeLossIncomeTaxProvisionBenefitOnAvailableForSaleInvestment`	-	USD	Annual
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$8.00M	USD	Annual
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$133.00M	USD	Annual
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-84.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$428.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$950.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests, net of tax of $4, $1 and $0 for 2018, 2017 and 2016, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$40.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests, net of tax of $4, $1 and $0 for 2018, 2017 and 2016, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$21.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests, net of tax of $4, $1 and $0 for 2018, 2017 and 2016, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$36.00M	USD	Annual
Comprehensive income attributable to Westlake Chemical Corporation	`ComprehensiveIncomeNetOfTax`	$1.43B	USD	Annual
Comprehensive income attributable to Westlake Chemical Corporation	`ComprehensiveIncomeNetOfTax`	$914.00M	USD	Annual
Comprehensive income attributable to Westlake Chemical Corporation	`ComprehensiveIncomeNetOfTax`	$407.00M	USD	Annual

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.