v3.26.1
Note 8 - Debt - Notes Outstanding (Details) (Parentheticals) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Carrying amount of debt $ 2,056 $ 2,011
Huntsman International LLC [Member] | Senior Notes Maturing May 2029 [Member]    
Carrying amount of debt 745  
Huntsman International LLC [Member] | Senior Notes Maturing June 2031 [Member]    
Carrying amount of debt 398  
Huntsman International LLC [Member] | Senior Note Maturing in October 2034 [Member]    
Carrying amount of debt $ 346