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 Operations (Details)

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Schedule I - Condensed Financial Information of Registrant - Huntsman Corporation (Parent Only) Statements of Operations (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Selling, general and administrative expenses $ (670) $ (671) $ (689)
Equity in loss of subsidiaries 4 44 83
Net (loss) income attributable to parent (284) (189) 101
Parent Company [Member] | Reportable Legal Entities [Member]      
Selling, general and administrative expenses (3) (3) (3)
Equity in loss of subsidiaries (426) (358) (68)
Dividend income—affiliate 145 172 172
Net (loss) income attributable to parent $ (284) $ (189) $ 101