Quarterly report [Sections 13 or 15(d)]

Note 19 - Income Taxes (Details Textual)

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Note 19 - Income Taxes (Details Textual) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Mar. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Income Tax Expense (Benefit) $ 3     $ 39   $ 25 $ 32
Effective Income Tax Rate Reconciliation, Write-off Prepaid Asset, Amount         $ 18    
Praxair/Linde [Member]              
Income Tax Expense (Benefit)     $ 8        
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount   $ (13)          
European Maleic Anhydride Manufacturing Facility Closure in Moers Germany[Member]              
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount   $ (8)          
Huntsman International LLC [Member]              
Income Tax Expense (Benefit) $ 4     $ 39   $ 26 $ 32