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

Note 15 - Debt - Notes Outstanding (Details)

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Note 15 - Debt - Notes Outstanding (Details) - Huntsman International LLC [Member]
$ in Millions
Dec. 31, 2025
USD ($)
Senior Notes Maturing May 2029 [Member]  
Debt Instrument, Interest Rate, Stated Percentage 4.50%
Principal outstanding $ 750
Unamortized premiums, discounts and debt issuance costs $ 5
Senior Notes Maturing June 2031 [Member]  
Debt Instrument, Interest Rate, Stated Percentage 2.95%
Principal outstanding $ 400
Unamortized premiums, discounts and debt issuance costs $ 2
Senior Note Maturing in October 2034 [Member]  
Debt Instrument, Interest Rate, Stated Percentage 5.70%
Principal outstanding $ 350
Unamortized premiums, discounts and debt issuance costs $ 4