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Consolidated Statements of Operations (Unaudited) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Income Statement [Abstract]        
Net sales $ 3,115 $ 3,956 $ 9,722 $ 12,495
Cost of sales 2,529 3,180 7,702 8,989
Gross profit 586 776 2,020 3,506 Close
Selling, general and administrative expenses 206 215 641 635 Close
Amortization of intangibles 31 39 92 124 Close
Restructuring, transaction and integration-related costs 0 6 6 24 CloseClose
Total Operating Expenses 237.0 260.0 739.0 783.0 0 Close
Income from operations 349 516 1,281 2,723 Close
Other income (expense)         Close
Interest expense (40) (44) (124) (134) Close
Total Other Income Expenses 16.0 -20.0 -23.0 -82.0 0.0 Close
Other income, net 56 24 101 52 CloseCloseClose
Income before income taxes 365 496 1,258 2,641 Close
Provision for income taxes 70 84 249 592 Close
Net income 295 412 1,009 2,049 Close
Net income attributable to noncontrolling interests 10 11 33 34
Net income attributable to Westlake Corporation $ 285 $ 401 $ 976 $ 2,015
Earnings per common share attributable to Westlake Corporation:        
Basic (in dollars per share) $ 2.22 $ 3.12 $ 7.61 $ 15.65
Diluted (in dollars per share) $ 2.20 $ 3.10 $ 7.56 $ 15.54
Weighted average common shares outstanding:        
Basic (in shares) 127,854,464 127,943,400 127,685,210 128,118,160
Diluted (in shares) 128,583,927 128,747,012 128,509,618 129,003,750