Annual report [Section 13 and 15(d), not S-K Item 405]

Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Comprehensive Income (Details)

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Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Comprehensive Income (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Net (loss) income $ (227) $ (127) $ 153
Foreign currency translations adjustments 132 (61) 34
Pension and other postretirement benefits adjustments 62 104 (4)
Other, net 4 3 (10)
Other comprehensive income, net of tax 198 46 20
Comprehensive (loss) income (29) (81) 173
Comprehensive income attributable to noncontrolling interests (61) (63) (49)
Comprehensive (loss) income attributable to Huntsman Corporation (90) (144) 124
Reportable Legal Entities [Member] | Parent Company [Member]      
Net (loss) income (284) (189) 101
Foreign currency translations adjustments 132 (61) 34
Pension and other postretirement benefits adjustments 62 104 (4)
Other, net 61 65 42
Other comprehensive income, net of tax 255 108 72
Comprehensive (loss) income (29) (81) 173
Comprehensive income attributable to noncontrolling interests (61) (63) (49)
Comprehensive (loss) income attributable to Huntsman Corporation $ (90) $ (144) $ 124