10-Q Filing

WESTLAKE CORP CIK: 1262823 Q1 2024

Filing Information

Form Type	10-Q
Accession Number	`0001262823-24-000025`
Period End Date	20240331
Filing Date	20240502
Fiscal Year	2024
Fiscal Period	Q1
XBRL Instance	wlk-20240331_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 164 Income Statement 72 Cash Flow Statement 120 Stockholders Equity 42 Comprehensive Income 36

Balance Sheet 164 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$3.30B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$3.30B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$3.11B	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$3.11B	USD	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.60B	USD	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.60B	USD	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.69B	USD	Point-in-time
Accounts receivable, net	`ReceivablesNetCurrent`	$1.69B	USD	Point-in-time
Inventories	`InventoryNet`	$1.66B	USD	Point-in-time
Inventories	`InventoryNet`	$1.66B	USD	Point-in-time
Inventories	`InventoryNet`	$1.62B	USD	Point-in-time
Inventories	`InventoryNet`	$1.62B	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$82.00M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$82.00M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$66.00M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$66.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$6.61B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$6.61B	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
Total current assets	`AssetsCurrent`	$6.53B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$6.53B	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 authorized	`PreferredStockSharesAuthorized`	50.00M	shares	Point-in-time
Preferred stock, shares authorized	`PreferredStockSharesAuthorized`	50.00M	shares	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$8.52B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$8.52B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$8.52B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$8.52B	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$697.00M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$697.00M	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
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$706.00M	USD	Point-in-time
Operating lease right-of-use assets	`OperatingLeaseRightOfUseAsset`	$706.00M	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
Common stock, par value, in dollars per share	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value, in dollars per share	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value, in dollars per share	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value, in dollars per share	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Goodwill	`Goodwill`	$2.04B	USD	Point-in-time
Goodwill	`Goodwill`	$2.04B	USD	Point-in-time
Goodwill	`Goodwill`	$2.04B	USD	Point-in-time
Goodwill	`Goodwill`	$2.04B	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
Customer relationships, net	`FiniteLivedIntangibleAssetsNet`	$889.00M	USD	Point-in-time
Customer relationships, net	`FiniteLivedIntangibleAssetsNet`	$889.00M	USD	Point-in-time
Customer relationships, net	`FiniteLivedIntangibleAssetsNet`	$910.00M	USD	Point-in-time
Customer relationships, net	`FiniteLivedIntangibleAssetsNet`	$910.00M	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
Other intangible assets, net	`OtherIntangibleAssetsNet`	$481.00M	USD	Point-in-time
Other intangible assets, net	`OtherIntangibleAssetsNet`	$481.00M	USD	Point-in-time
Other intangible assets, net	`OtherIntangibleAssetsNet`	$493.00M	USD	Point-in-time
Other intangible assets, net	`OtherIntangibleAssetsNet`	$493.00M	USD	Point-in-time
Equity method investments	`EquityMethodInvestments`	$1.11B	USD	Point-in-time
Equity method investments	`EquityMethodInvestments`	$1.11B	USD	Point-in-time
Equity method investments	`EquityMethodInvestments`	$1.10B	USD	Point-in-time
Equity method investments	`EquityMethodInvestments`	$1.10B	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$651.00M	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$651.00M	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$694.00M	USD	Point-in-time
Other assets, net	`DeferredCostsAndOtherAssets`	$694.00M	USD	Point-in-time
Total assets	`Assets`	$21.04B	USD	Point-in-time
Total assets	`Assets`	$21.04B	USD	Point-in-time
Total assets	`Assets`	$20.96B	USD	Point-in-time
Total assets	`Assets`	$20.96B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$891.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$891.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$877.00M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$877.00M	USD	Point-in-time
Accrued and other liabilities	`AccruedLiabilitiesCurrent`	$1.46B	USD	Point-in-time
Accrued and other liabilities	`AccruedLiabilitiesCurrent`	$1.46B	USD	Point-in-time
Accrued and other liabilities	`AccruedLiabilitiesCurrent`	$1.61B	USD	Point-in-time
Accrued and other liabilities	`AccruedLiabilitiesCurrent`	$1.61B	USD	Point-in-time
Current portion of long-term debt, net	`LongTermDebtCurrent`	$300.00M	USD	Point-in-time
Current portion of long-term debt, net	`LongTermDebtCurrent`	$300.00M	USD	Point-in-time
Current portion of long-term debt, net	`LongTermDebtCurrent`	$299.00M	USD	Point-in-time
Current portion of long-term debt, net	`LongTermDebtCurrent`	$299.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.79B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.79B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.65B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.65B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$4.61B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$4.61B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$4.59B	USD	Point-in-time
Long-term debt, net	`LongTermDebtNoncurrent`	$4.59B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.56B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.56B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.54B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$1.54B	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$363.00M	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$363.00M	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$353.00M	USD	Point-in-time
Pension and other post-retirement benefits	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$353.00M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$611.00M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$611.00M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$622.00M	USD	Point-in-time
Operating lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$622.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$340.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$340.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$343.00M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$343.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$10.11B	USD	Point-in-time
Total liabilities	`Liabilities`	$10.11B	USD	Point-in-time
Total liabilities	`Liabilities`	$10.27B	USD	Point-in-time
Total liabilities	`Liabilities`	$10.27B	USD	Point-in-time
Commitments and contingencies (Note 13)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 13)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 13)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (Note 13)	`CommitmentsAndContingencies`	-	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
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 March 31, 2024 and December 31, 2023, 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 March 31, 2024 and December 31, 2023, 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 March 31, 2024 and December 31, 2023, 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 March 31, 2024 and December 31, 2023, respectively	`CommonStockValue`	$1.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,082,171 and 6,439,289 shares at March 31, 2024 and December 31, 2023, respectively	`TreasuryStockValue`	$414.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,082,171 and 6,439,289 shares at March 31, 2024 and December 31, 2023, respectively	`TreasuryStockValue`	$414.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,082,171 and 6,439,289 shares at March 31, 2024 and December 31, 2023, respectively	`TreasuryStockValue`	$435.00M	USD	Point-in-time
Common stock, held in treasury, at cost; 6,082,171 and 6,439,289 shares at March 31, 2024 and December 31, 2023, respectively	`TreasuryStockValue`	$435.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$630.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$630.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$624.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$624.00M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$10.14B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$10.14B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$10.25B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$10.25B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-67.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-67.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-89.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-89.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-132.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-132.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-98.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-98.00M	USD	Point-in-time
Total Westlake Corporation stockholders' equity	`StockholdersEquity`	$10.24B	USD	Point-in-time
Total Westlake Corporation stockholders' equity	`StockholdersEquity`	$10.24B	USD	Point-in-time
Total Westlake Corporation stockholders' equity	`StockholdersEquity`	$10.33B	USD	Point-in-time
Total Westlake Corporation stockholders' equity	`StockholdersEquity`	$10.33B	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$522.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$522.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$523.00M	USD	Point-in-time
Noncontrolling interests	`MinorityInterest`	$523.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.83B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.83B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.76B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.76B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.46B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.46B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.85B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.85B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$20.96B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$20.96B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$21.04B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$21.04B	USD	Point-in-time

Income Statement 72 line items

Line Item	Tag	Value	Unit	Period
Net sales	`Revenues`	$2.98B	USD	1 Quarter
Net sales	`Revenues`	$2.98B	USD	1 Quarter
Net sales	`Revenues`	$3.36B	USD	1 Quarter
Net sales	`Revenues`	$3.36B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$2.51B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$2.51B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$2.56B	USD	1 Quarter
Cost of sales	`CostOfGoodsAndServicesSold`	$2.56B	USD	1 Quarter
Gross profit	`GrossProfit`	$792.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$792.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$466.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$466.00M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$209.00M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$209.00M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$222.00M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$222.00M	USD	1 Quarter
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$30.00M	USD	1 Quarter
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$30.00M	USD	1 Quarter
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$31.00M	USD	1 Quarter
Amortization of intangibles	`AmortizationOfIntangibleAssets`	$31.00M	USD	1 Quarter
Restructuring, transaction and integration-related costs	`RestructuringTransactionandIntegrationCost`	$4.00M	USD	1 Quarter
Restructuring, transaction and integration-related costs	`RestructuringTransactionandIntegrationCost`	$4.00M	USD	1 Quarter
Restructuring, transaction and integration-related costs	`RestructuringTransactionandIntegrationCost`	$3.00M	USD	1 Quarter
Restructuring, transaction and integration-related costs	`RestructuringTransactionandIntegrationCost`	$3.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$536.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$536.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$223.00M	USD	1 Quarter
Income from operations	`OperatingIncomeLoss`	$223.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$40.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$40.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$42.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$42.00M	USD	1 Quarter
Other income, net	`NonoperatingIncomeExpense`	$50.00M	USD	1 Quarter
Other income, net	`NonoperatingIncomeExpense`	$50.00M	USD	1 Quarter
Other income, net	`NonoperatingIncomeExpense`	$22.00M	USD	1 Quarter
Other income, net	`NonoperatingIncomeExpense`	$22.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$233.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$233.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$516.00M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$516.00M	USD	1 Quarter
Provision for income taxes	`IncomeTaxExpenseBenefit`	$48.00M	USD	1 Quarter
Provision for income taxes	`IncomeTaxExpenseBenefit`	$48.00M	USD	1 Quarter
Provision for income taxes	`IncomeTaxExpenseBenefit`	$109.00M	USD	1 Quarter
Provision for income taxes	`IncomeTaxExpenseBenefit`	$109.00M	USD	1 Quarter
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$13.00M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$13.00M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Net income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$11.00M	USD	1 Quarter
Net income attributable to Westlake Corporation	`NetIncomeLoss`	$394.00M	USD	1 Quarter
Net income attributable to Westlake Corporation	`NetIncomeLoss`	$394.00M	USD	1 Quarter
Net income attributable to Westlake Corporation	`NetIncomeLoss`	$174.00M	USD	1 Quarter
Net income attributable to Westlake Corporation	`NetIncomeLoss`	$174.00M	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$3.07	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$3.07	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.35	USD	1 Quarter
Basic (in dollars per share)	`EarningsPerShareBasic`	$1.35	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.34	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.34	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.05	USD	1 Quarter
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.05	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	127.55M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	127.55M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	128.36M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	128.36M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	128.46M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	128.46M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	129.02M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	129.02M	shares	1 Quarter

Cash Flow Statement 120 line items

Line Item	Tag	Value	Unit	Period
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Other Comprehensive Income (Loss), Tax, Portion Attributable to Noncontrolling Interest	`OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest`	$1.00M	USD	1 Quarter
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$273.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$273.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$267.00M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$267.00M	USD	1 Quarter
Stock-based compensation expense	`ShareBasedCompensation`	$9.00M	USD	1 Quarter
Stock-based compensation expense	`ShareBasedCompensation`	$9.00M	USD	1 Quarter
Stock-based compensation expense	`ShareBasedCompensation`	$9.00M	USD	1 Quarter
Stock-based compensation expense	`ShareBasedCompensation`	$9.00M	USD	1 Quarter
Loss from disposition and write-off of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-5.00M	USD	1 Quarter
Loss from disposition and write-off of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-5.00M	USD	1 Quarter
Loss from disposition and write-off of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-6.00M	USD	1 Quarter
Loss from disposition and write-off of property, plant and equipment	`GainLossOnDispositionOfAssets`	$-6.00M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-16.00M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-16.00M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-22.00M	USD	1 Quarter
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-22.00M	USD	1 Quarter
Other gains, net	`OtherOperatingActivitiesCashFlowStatement`	$-3.00M	USD	1 Quarter
Other gains, net	`OtherOperatingActivitiesCashFlowStatement`	$-3.00M	USD	1 Quarter
Other gains, net	`OtherOperatingActivitiesCashFlowStatement`	$-4.00M	USD	1 Quarter
Other gains, net	`OtherOperatingActivitiesCashFlowStatement`	$-4.00M	USD	1 Quarter
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$15.00M	USD	1 Quarter
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$15.00M	USD	1 Quarter
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$97.00M	USD	1 Quarter
Accounts receivable	`IncreaseDecreaseInAccountsAndOtherReceivables`	$97.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$47.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$47.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$-34.00M	USD	1 Quarter
Inventories	`IncreaseDecreaseInInventories`	$-34.00M	USD	1 Quarter
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-15.00M	USD	1 Quarter
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-15.00M	USD	1 Quarter
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-6.00M	USD	1 Quarter
Prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-6.00M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-20.00M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-20.00M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$63.00M	USD	1 Quarter
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$63.00M	USD	1 Quarter
Accrued and other liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-69.00M	USD	1 Quarter
Accrued and other liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-69.00M	USD	1 Quarter
Accrued and other liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-111.00M	USD	1 Quarter
Accrued and other liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-111.00M	USD	1 Quarter
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$101.00M	USD	1 Quarter
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$101.00M	USD	1 Quarter
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$93.00M	USD	1 Quarter
Other, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$93.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$169.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$169.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$512.00M	USD	1 Quarter
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$512.00M	USD	1 Quarter
Additions to investments in unconsolidated subsidiaries	`ReturnOfAdditionsToInvestmentFromUnconsolidatedSubsidiaries`	$1.00M	USD	1 Quarter
Additions to investments in unconsolidated subsidiaries	`ReturnOfAdditionsToInvestmentFromUnconsolidatedSubsidiaries`	$1.00M	USD	1 Quarter
Additions to investments in unconsolidated subsidiaries	`ReturnOfAdditionsToInvestmentFromUnconsolidatedSubsidiaries`	$1.00M	USD	1 Quarter
Additions to investments in unconsolidated subsidiaries	`ReturnOfAdditionsToInvestmentFromUnconsolidatedSubsidiaries`	$1.00M	USD	1 Quarter
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$272.00M	USD	1 Quarter
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$272.00M	USD	1 Quarter
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$267.00M	USD	1 Quarter
Additions to property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$267.00M	USD	1 Quarter
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-5.00M	USD	1 Quarter
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-5.00M	USD	1 Quarter
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.00M	USD	1 Quarter
Other, net	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.00M	USD	1 Quarter
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-263.00M	USD	1 Quarter
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-263.00M	USD	1 Quarter
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-272.00M	USD	1 Quarter
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-272.00M	USD	1 Quarter
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$10.00M	USD	1 Quarter
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$10.00M	USD	1 Quarter
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$10.00M	USD	1 Quarter
Distributions to noncontrolling interests	`PaymentsOfDividendsMinorityInterest`	$10.00M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$47.00M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$47.00M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$65.00M	USD	1 Quarter
Dividends paid	`PaymentsOfDividendsCommonStock`	$65.00M	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$7.00M	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$7.00M	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$5.00M	USD	1 Quarter
Proceeds from exercise of stock options	`ProceedsFromStockOptionsExercised`	$5.00M	USD	1 Quarter
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	-	USD	1 Quarter
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	-	USD	1 Quarter
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	$22.00M	USD	1 Quarter
Repurchase of common stock for treasury	`PaymentsForRepurchaseOfCommonStock`	$22.00M	USD	1 Quarter
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-6.00M	USD	1 Quarter
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-6.00M	USD	1 Quarter
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.00M	USD	1 Quarter
Other, net	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.00M	USD	1 Quarter
Net cash used for financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-74.00M	USD	1 Quarter
Net cash used for financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-74.00M	USD	1 Quarter
Net cash used for financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-75.00M	USD	1 Quarter
Net cash used for financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-75.00M	USD	1 Quarter
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$9.00M	USD	1 Quarter
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$9.00M	USD	1 Quarter
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-18.00M	USD	1 Quarter
Effect of exchange rate changes on cash, cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-18.00M	USD	1 Quarter
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-195.00M	USD	1 Quarter
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-195.00M	USD	1 Quarter
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$183.00M	USD	1 Quarter
Net increase (decrease) in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$183.00M	USD	1 Quarter
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.32B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.32B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.12B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.12B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.43B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.43B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.25B	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.25B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.32B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.32B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.12B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$3.12B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.43B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.43B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.25B	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$2.25B	USD	Point-in-time

Stockholders Equity 42 line items

Line Item	Tag	Value	Unit	Period
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.83B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.83B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.76B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.76B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.46B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.46B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.85B	USD	Point-in-time
Beginning balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.85B	USD	Point-in-time
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-36.00M	USD	1 Quarter
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-36.00M	USD	1 Quarter
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$22.00M	USD	1 Quarter
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$22.00M	USD	1 Quarter
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$22.00M	USD	1 Quarter
Common stock repurchased	`TreasuryStockValueAcquiredCostMethod`	$22.00M	USD	1 Quarter
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$4.00M	USD	1 Quarter
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$4.00M	USD	1 Quarter
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$7.00M	USD	1 Quarter
Shares issuedstock-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$7.00M	USD	1 Quarter
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$8.00M	USD	1 Quarter
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$8.00M	USD	1 Quarter
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.00M	USD	1 Quarter
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.00M	USD	1 Quarter
Dividends declared	`DividendsCommonStockCash`	$47.00M	USD	1 Quarter
Dividends declared	`DividendsCommonStockCash`	$47.00M	USD	1 Quarter
Dividends declared	`DividendsCommonStockCash`	$65.00M	USD	1 Quarter
Dividends declared	`DividendsCommonStockCash`	$65.00M	USD	1 Quarter
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.00M	USD	1 Quarter
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.00M	USD	1 Quarter
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.00M	USD	1 Quarter
Distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.00M	USD	1 Quarter
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.83B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.83B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.76B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.76B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.46B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.46B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.85B	USD	Point-in-time
Ending balances	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$10.85B	USD	Point-in-time

Comprehensive Income 36 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$185.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Net income	`ProfitLoss`	$407.00M	USD	1 Quarter
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax`	-	USD	1 Quarter
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax`	-	USD	1 Quarter
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax`	$-1.00M	USD	1 Quarter
Pension and other post-retirement benefits reserves adjustment	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax`	$-1.00M	USD	1 Quarter
Foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$20.00M	USD	1 Quarter
Foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$20.00M	USD	1 Quarter
Foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-33.00M	USD	1 Quarter
Foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-33.00M	USD	1 Quarter
Income tax (provision) benefit on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$-3.00M	USD	1 Quarter
Income tax (provision) benefit on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$-3.00M	USD	1 Quarter
Income tax (provision) benefit on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$4.00M	USD	1 Quarter
Income tax (provision) benefit on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax`	$4.00M	USD	1 Quarter
Other, net of income tax	`OtherComprehensiveIncomeOtherNetOfTax`	-	USD	1 Quarter
Other, net of income tax	`OtherComprehensiveIncomeOtherNetOfTax`	-	USD	1 Quarter
Other, net of income tax	`OtherComprehensiveIncomeOtherNetOfTax`	$-1.00M	USD	1 Quarter
Other, net of income tax	`OtherComprehensiveIncomeOtherNetOfTax`	$-1.00M	USD	1 Quarter
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-36.00M	USD	1 Quarter
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$-36.00M	USD	1 Quarter
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$22.00M	USD	1 Quarter
Other comprehensive income (loss), net of income taxes	`OtherComprehensiveIncomeLossNetOfTax`	$22.00M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$149.00M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$149.00M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$429.00M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$429.00M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests, net of tax of $1 and $1 for the three months ended March 31, 2024 and 2023, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$9.00M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests, net of tax of $1 and $1 for the three months ended March 31, 2024 and 2023, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$9.00M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests, net of tax of $1 and $1 for the three months ended March 31, 2024 and 2023, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$13.00M	USD	1 Quarter
Comprehensive income attributable to noncontrolling interests, net of tax of $1 and $1 for the three months ended March 31, 2024 and 2023, respectively	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$13.00M	USD	1 Quarter
Comprehensive income attributable to Westlake Corporation	`ComprehensiveIncomeNetOfTax`	$416.00M	USD	1 Quarter
Comprehensive income attributable to Westlake Corporation	`ComprehensiveIncomeNetOfTax`	$416.00M	USD	1 Quarter
Comprehensive income attributable to Westlake Corporation	`ComprehensiveIncomeNetOfTax`	$140.00M	USD	1 Quarter
Comprehensive income attributable to Westlake Corporation	`ComprehensiveIncomeNetOfTax`	$140.00M	USD	1 Quarter

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