10-K Filing

WESTLAKE CORP CIK: 1262823 FY 2020

Filing Information

Form Type	10-K
Accession Number	`0001262823-21-000023`
Period End Date	20201231
Filing Date	20210224
Fiscal Year	2020
Fiscal Period	FY
XBRL Instance	wlk-20201231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 82 Income Statement 110 Cash Flow Statement 106 Stockholders Equity 62 Comprehensive Income 38

Balance Sheet 82 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$1.31B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$728.00M	USD	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.04B	USD	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.21B	USD	Point-in-time
Inventories	`InventoryNet`	$936.00M	USD	Point-in-time
Inventories	`InventoryNet`	$918.00M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$42.00M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$32.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$3.48B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.74B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$6.92B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$6.91B	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$461.00M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$443.00M	USD	Point-in-time
Goodwill	`Goodwill`	$1.08B	USD	Point-in-time
Goodwill	`Goodwill`	$1.00B	USD	Point-in-time
Goodwill	`Goodwill`	$1.07B	USD	Point-in-time
Other intangible assets, net	`OtherIntangibleAssetsNet`	$168.00M	USD	Point-in-time
Other intangible assets, net	`OtherIntangibleAssetsNet`	$187.00M	USD	Point-in-time
Equity Method Investments	`EquityMethodInvestments`	$1.06B	USD	Point-in-time
Equity Method Investments	`EquityMethodInvestments`	$1.11B	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$268.00M	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$223.00M	USD	Point-in-time
Total assets	`Assets`	$13.84B	USD	Point-in-time
Total assets	`Assets`	$13.26B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$536.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$473.00M	USD	Point-in-time
Accrued and other liabilities	`AccruedLiabilitiesCurrent`	$821.00M	USD	Point-in-time
Accrued and other liabilities	`AccruedLiabilitiesCurrent`	$768.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.36B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.24B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$3.57B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$3.44B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.25B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.37B	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$360.00M	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$391.00M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$355.00M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$376.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$199.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$202.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$6.86B	USD	Point-in-time
Total liabilities	`Liabilities`	$7.26B	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, 2020 and 2019, 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, 2020 and 2019, respectively	`CommonStockValue`	$1.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,821,174 and 6,266,609 shares at December 31, 2020 and 2019, respectively	`TreasuryStockValue`	$377.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,821,174 and 6,266,609 shares at December 31, 2020 and 2019, respectively	`TreasuryStockValue`	$401.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$569.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$553.00M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.94B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$5.76B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-62.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-74.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-64.00M	USD	Point-in-time
Total Westlake Chemical Corporation stockholders' equity	`StockholdersEquity`	$5.86B	USD	Point-in-time
Total Westlake Chemical Corporation stockholders' equity	`StockholdersEquity`	$6.04B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$535.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$543.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.40B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.58B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.37B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$13.84B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$13.26B	USD	Point-in-time
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
Preferred stock, shares issued	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued	`PreferredStockSharesIssued`	0.00	shares	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
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
Common Stock, shares authorized	`CommonStockSharesAuthorized`	300.00M	shares	Point-in-time
Common Stock, shares authorized	`CommonStockSharesAuthorized`	300.00M	shares	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`	6.82M	shares	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	6.27M	shares	Point-in-time

Income Statement 110 line items

Line Item	Tag	Value	Unit	Period
Net sales	`Revenues`	$8.12B	USD	Annual
Net sales	`Revenues`	$1.97B	USD	1 Quarter
Net sales	`Revenues`	$1.90B	USD	1 Quarter
Net sales	`Revenues`	$2.02B	USD	1 Quarter
Net sales	`Revenues`	$7.50B	USD	Annual
Net sales	`Revenues`	$1.71B	USD	1 Quarter
Net sales	`Revenues`	$2.14B	USD	1 Quarter
Net sales	`Revenues`	$1.88B	USD	1 Quarter
Net sales	`Revenues`	$2.07B	USD	1 Quarter
Net sales	`Revenues`	$1.93B	USD	1 Quarter
Net sales	`Revenues`	$8.63B	USD	Annual
Cost of sales	`CostOfGoodsAndServicesSold`	$6.48B	USD	Annual
Cost of sales	`CostOfGoodsAndServicesSold`	$6.65B	USD	Annual
Cost of sales	`CostOfGoodsAndServicesSold`	$6.86B	USD	Annual
Gross profit	`GrossProfit`	$340.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$1.02B	USD	Annual
Gross profit	`GrossProfit`	$1.99B	USD	Annual
Gross profit	`GrossProfit`	$1.26B	USD	Annual
Gross profit	`GrossProfit`	$371.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$283.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$248.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$169.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$323.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$299.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$250.00M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$458.00M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$449.00M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$445.00M	USD	Annual
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$109.00M	USD	Annual
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$109.00M	USD	Annual
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$101.00M	USD	Annual
Restructuring Transaction and Integration Cost	`RestructuringTransactionAndIntegrationCost`	$33.00M	USD	Annual
Restructuring Transaction and Integration Cost	`RestructuringTransactionAndIntegrationCost`	$37.00M	USD	Annual
Restructuring Transaction and Integration Cost	`RestructuringTransactionAndIntegrationCost`	$36.00M	USD	Annual
Income from operations	`OperatingIncomeLoss`	$134.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$102.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$429.00M	USD	Annual
Income from operations	`OperatingIncomeLoss`	$226.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$194.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$36.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$178.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$1.41B	USD	Annual
Income from operations	`OperatingIncomeLoss`	$656.00M	USD	Annual
Income from operations	`OperatingIncomeLoss`	$136.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$79.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$142.00M	USD	Annual
Interest expense	`InterestExpense`	$126.00M	USD	Annual
Interest expense	`InterestExpense`	$124.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$38.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$44.00M	USD	Annual
Other income, net	`NonoperatingIncomeExpense`	$52.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.33B	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$570.00M	USD	Annual
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$331.00M	USD	Annual
Provision for (benefit from) income taxes	`IncomeTaxExpenseBenefit`	$300.00M	USD	Annual
Provision for (benefit from) income taxes	`IncomeTaxExpenseBenefit`	$-42.00M	USD	Annual
Provision for (benefit from) income taxes	`IncomeTaxExpenseBenefit`	$108.00M	USD	Annual
Net income	`ProfitLoss`	$129.00M	USD	1 Quarter
Net income	`ProfitLoss`	$166.00M	USD	1 Quarter
Net income	`ProfitLoss`	$69.00M	USD	1 Quarter
Net income	`ProfitLoss`	$462.00M	USD	Annual
Net income	`ProfitLoss`	$82.00M	USD	1 Quarter
Net income	`ProfitLoss`	$85.00M	USD	1 Quarter
Net income	`ProfitLoss`	$24.00M	USD	1 Quarter
Net income	`ProfitLoss`	$123.00M	USD	1 Quarter
Net income	`ProfitLoss`	$373.00M	USD	Annual
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$157.00M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$43.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$38.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$41.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$72.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$72.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$996.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$158.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$113.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$145.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$15.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$421.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$119.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$330.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$57.00M	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$2.57	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.22	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.56	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.45	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.92	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$7.66	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.13	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.87	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.56	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$0.11	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$3.26	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.25	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.11	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.92	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.22	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.13	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$7.62	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.56	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.56	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.87	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.45	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.55	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	127.85M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	129.40M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	128.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	128.09M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	129.99M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	128.76M	shares	Annual

Cash Flow Statement 106 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$129.00M	USD	1 Quarter
Net income	`ProfitLoss`	$166.00M	USD	1 Quarter
Net income	`ProfitLoss`	$69.00M	USD	1 Quarter
Net income	`ProfitLoss`	$462.00M	USD	Annual
Net income	`ProfitLoss`	$82.00M	USD	1 Quarter
Net income	`ProfitLoss`	$85.00M	USD	1 Quarter
Net income	`ProfitLoss`	$24.00M	USD	1 Quarter
Net income	`ProfitLoss`	$123.00M	USD	1 Quarter
Net income	`ProfitLoss`	$373.00M	USD	Annual
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$157.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$641.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$713.00M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$773.00M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$29.00M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$25.00M	USD	Annual
Stock-based compensation expense	`ShareBasedCompensation`	$22.00M	USD	Annual
Loss from disposition and write-off of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-44.00M	USD	Annual
Loss from disposition and write-off of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-49.00M	USD	Annual
Loss from disposition and write-off of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-33.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$54.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$62.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$146.00M	USD	Annual
Other losses (gains), net	`OtherOperatingActivitiesCashFlowStatement`	$-20.00M	USD	Annual
Other losses (gains), net	`OtherOperatingActivitiesCashFlowStatement`	$21.00M	USD	Annual
Other losses (gains), net	`OtherOperatingActivitiesCashFlowStatement`	$1.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$58.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$161.00M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$-59.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-29.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$123.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-112.00M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets`	$1.00M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets`	$-2.00M	USD	Annual
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidExpensesAndOtherCurrentAssets`	$1.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$67.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-89.00M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-100.00M	USD	Annual
Accrued and other liabilities	`IncreaseDecreaseInAccruedLiabilities`	$46.00M	USD	Annual
Accrued and other liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-8.00M	USD	Annual
Accrued and other liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-13.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$61.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$71.00M	USD	Annual
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$84.00M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.30B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.30B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.41B	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$314.00M	USD	Annual
Acquisition of businesses, net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Additions to investments in unconsolidated subsidiaries	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$68.00M	USD	Annual
Additions to investments in unconsolidated subsidiaries	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$862.00M	USD	Annual
Additions to investments in unconsolidated subsidiaries	`PaymentsToAcquireAdditionalInterestInSubsidiaries`	$18.00M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$787.00M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$525.00M	USD	Annual
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$702.00M	USD	Annual
Return of investment from an unconsolidated subsidiary	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	$44.00M	USD	Annual
Return of investment from an unconsolidated subsidiary	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	-	USD	Annual
Return of investment from an unconsolidated subsidiary	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	-	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$10.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-16.00M	USD	Annual
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-9.00M	USD	Annual
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.95B	USD	Annual
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-754.00M	USD	Annual
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-509.00M	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$55.00M	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$45.00M	USD	Annual
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$50.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$137.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$120.00M	USD	Annual
Dividends paid	`PaymentsOfDividendsCommonStock`	$132.00M	USD	Annual
Net proceeds from debt issuance and drawdown of revolver	`ProceedsFromIssuanceOfDebt`	$784.00M	USD	Annual
Net proceeds from debt issuance and drawdown of revolver	`ProceedsFromIssuanceOfDebt`	$1.30B	USD	Annual
Net proceeds from debt issuance and drawdown of revolver	`ProceedsFromIssuanceOfDebt`	-	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`	$63.00M	USD	Annual
Net proceeds from issuance of Westlake Chemical Partners LP common units	`ProceedsFromIssuanceOfCommonLimitedPartnersUnits`	-	USD	Annual
Net proceeds from (repayment of) short-term notes payable	`ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess`	$-17.00M	USD	Annual
Net proceeds from (repayment of) short-term notes payable	`ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess`	$2.00M	USD	Annual
Net proceeds from (repayment of) short-term notes payable	`ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess`	-	USD	Annual
Repayment of revolver and senior notes	`RepaymentsOfLongTermDebt`	$1.25B	USD	Annual
Repayment of revolver and senior notes	`RepaymentsOfLongTermDebt`	-	USD	Annual
Repayment of revolver and senior notes	`RepaymentsOfLongTermDebt`	$1.17B	USD	Annual
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	$106.00M	USD	Annual
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	$30.00M	USD	Annual
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	$54.00M	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$2.00M	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-7.00M	USD	Annual
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$9.00M	USD	Annual
Net cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-216.00M	USD	Annual
Net cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$630.00M	USD	Annual
Net cash provided by (used for) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-1.43B	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`	$15.00M	USD	Annual
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-2.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-25.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-779.00M	USD	Annual
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$587.00M	USD	Annual
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`	$775.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$750.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.34B	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`	$775.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$750.00M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of the year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.34B	USD	Point-in-time

Stockholders Equity 62 line items

Line Item	Tag	Value	Unit	Period
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.40B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.58B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.37B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Beginning balance, shares issued	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Beginning balance, shares issued	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Beginning balance, Treasury Stock, Shares	`TreasuryStockShares`	6.82M	shares	Point-in-time
Beginning balance, Treasury Stock, Shares	`TreasuryStockShares`	6.27M	shares	Point-in-time
Reclassification of certain tax effects to retained earnings	`TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect`	-	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$72.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$72.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$996.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$158.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$113.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$145.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$15.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$421.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$119.00M	USD	1 Quarter
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$330.00M	USD	Annual
Net income attributable to Westlake Chemical Corporation	`NetIncomeLoss`	$57.00M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$43.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$38.00M	USD	Annual
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$41.00M	USD	Annual
Net income	`ProfitLoss`	$129.00M	USD	1 Quarter
Net income	`ProfitLoss`	$166.00M	USD	1 Quarter
Net income	`ProfitLoss`	$69.00M	USD	1 Quarter
Net income	`ProfitLoss`	$462.00M	USD	Annual
Net income	`ProfitLoss`	$82.00M	USD	1 Quarter
Net income	`ProfitLoss`	$85.00M	USD	1 Quarter
Net income	`ProfitLoss`	$24.00M	USD	1 Quarter
Net income	`ProfitLoss`	$123.00M	USD	1 Quarter
Net income	`ProfitLoss`	$373.00M	USD	Annual
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$157.00M	USD	1 Quarter
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$14.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-84.00M	USD	Annual
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-11.00M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$106.00M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$54.00M	USD	Annual
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$30.00M	USD	Annual
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$5.00M	USD	Annual
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$9.00M	USD	Annual
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$1.00M	USD	Annual
Stock-based compensation (in shares)	`StockIssuedDuringPeriodSharesStockOptionsExercised`	247,414.00	shares	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$24.00M	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$29.00M	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$18.00M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$132.00M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$120.00M	USD	Annual
Dividends declared	`DividendsCommonStockCash`	$137.00M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$55.00M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$50.00M	USD	Annual
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$45.00M	USD	Annual
Issuance of Westlake Chemical Partners LP common units	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$63.00M	USD	Annual
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.40B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.58B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.37B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Ending balance, shares issued	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Ending balance, shares issued	`CommonStockSharesIssued`	134.65M	shares	Point-in-time
Ending balance, Treasury Stock, Shares	`TreasuryStockShares`	6.82M	shares	Point-in-time
Ending balance, Treasury Stock, Shares	`TreasuryStockShares`	6.27M	shares	Point-in-time

Comprehensive Income 38 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$129.00M	USD	1 Quarter
Net income	`ProfitLoss`	$166.00M	USD	1 Quarter
Net income	`ProfitLoss`	$69.00M	USD	1 Quarter
Net income	`ProfitLoss`	$462.00M	USD	Annual
Comprehensive income (loss), tax portion attributable to noncontrolling interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$4.00M	USD	Annual
Net income	`ProfitLoss`	$82.00M	USD	1 Quarter
Net income	`ProfitLoss`	$85.00M	USD	1 Quarter
Comprehensive income (loss), tax portion attributable to noncontrolling interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$2.00M	USD	Annual
Net income	`ProfitLoss`	$24.00M	USD	1 Quarter
Net income	`ProfitLoss`	$123.00M	USD	1 Quarter
Net income	`ProfitLoss`	$373.00M	USD	Annual
Comprehensive income (loss), tax portion attributable to noncontrolling interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$1.00M	USD	Annual
Net income	`ProfitLoss`	$1.03B	USD	Annual
Net income	`ProfitLoss`	$157.00M	USD	1 Quarter
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$32.00M	USD	Annual
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$33.00M	USD	Annual
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$37.00M	USD	Annual
Income tax benefit on pension and other post-retirement benefits	`OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent`	$10.00M	USD	Annual
Income tax benefit on pension and other post-retirement benefits	`OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent`	$8.00M	USD	Annual
Income tax benefit on pension and other post-retirement benefits	`OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent`	$8.00M	USD	Annual
Foreign currency translation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$-59.00M	USD	Annual
Foreign currency translation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$23.00M	USD	Annual
Foreign currency translation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax`	$17.00M	USD	Annual
Income tax benefit (provision) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	-	USD	Annual
Income tax benefit (provision) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$4.00M	USD	Annual
Income tax benefit (provision) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$-18.00M	USD	Annual
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$14.00M	USD	Annual
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-84.00M	USD	Annual
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-11.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$387.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$950.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$451.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests, net of tax of $1, $2 and $4 for 2020, 2019 and 2018, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$42.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests, net of tax of $1, $2 and $4 for 2020, 2019 and 2018, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$47.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests, net of tax of $1, $2 and $4 for 2020, 2019 and 2018, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$36.00M	USD	Annual
Comprehensive income attributable to Westlake Chemical Corporation	`ComprehensiveIncomeNetOfTax`	$409.00M	USD	Annual
Comprehensive income attributable to Westlake Chemical Corporation	`ComprehensiveIncomeNetOfTax`	$340.00M	USD	Annual
Comprehensive income attributable to Westlake Chemical Corporation	`ComprehensiveIncomeNetOfTax`	$914.00M	USD	Annual

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