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Consolidated Statements Of Operations - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Statement [Abstract]      
Net sales $ 12,548 $ 15,794 $ 11,778
Cost of sales 10,329 11,721 8,283
Gross profit 2,219 4,073 3,495 Close
Selling, general and administrative expenses 865 835 551 Close
Impairment of goodwill and long-lived assets 475 0 0 Close
Amortization of intangibles 122 155 123 Close
Restructuring, transaction and integration-related costs 28 33 21 CloseClose
Total Operating Expenses 1490.0 1023.0 695.0 0 0 Close
Income from operations 729 3,050 2,800 Close
Other income (expense)       Close
Interest expense (165) (177) (176) Close
Total Other Income Expenses -29.0 -104.0 -123.0 0.0 0 Close
Other income, net 136 73 53 CloseCloseClose
Income before income taxes 700 2,946 2,677 Close
Provision for income taxes 178 649 607 Close
Net income 522 2,297 2,070 Close
Net income attributable to noncontrolling interests 43 50 55
Net income attributable to Westlake Corporation $ 479 $ 2,247 $ 2,015
Earnings per common share attributable to Westlake Corporation:      
Basic (in dollars per share) $ 3.73 $ 17.46 $ 15.66
Diluted (in dollars per share) $ 3.70 $ 17.34 $ 15.58
Weighted average common shares outstanding:      
Basic (in shares) 127,806,317 127,970,445 128,002,911
Diluted (in shares) 128,598,441 128,845,562 128,697,982