v3.26.3
Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net income (loss) $ 18 $ (772) $ 132 $ (938)
Pension and other post-retirement benefits liability        
Pension and other post-retirement benefits reserves adjustment 1 0 1 1
Income tax provision on pension and other post-retirement benefits liability 0 0 0 0
Foreign currency translation adjustments        
Foreign currency translation gain (loss) 4 (15) (25) 42
Income tax benefit (provision) on foreign currency translation (1) 0 (7) 26
Available-for-sale investments        
Unrealized holding gain (loss) on investments (2) 1 (3) 1
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, Tax 0 0 0 0
Other comprehensive income (loss), net of income taxes 2 (14) (34) 70
Comprehensive income (loss) 20 (786) 98 (868)
Comprehensive income attributable to noncontrolling interests, net of tax of $0 and $1 for the three months ended September 30, 2026 and 2025, respectively; and net of tax of $2 and $2 for the nine months ended September 30, 2026 and 2025, respectively 12 9 35 29
Comprehensive income (loss) attributable to Westlake Corporation $ 8 $ (795) $ 63 $ (897)