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

Note 15 - Debt (Details Textual)

v3.25.4
Note 15 - Debt (Details Textual) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Feb. 09, 2026
Mar. 28, 2025
Jun. 30, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 29, 2025
Jan. 31, 2024
Long-Term Debt, Excluding Current Maturities [1]       $ 1,658 $ 1,510      
Repayments of Notes Payable       (0) 218 $ (0)    
Debt Issuance Costs, Net       $ 7 9      
Shanghai Lianheng Isocyanate Company Ltd. (“SLIC”) [Member]                
Accounts Receivable, after Allowance for Credit Loss               $ 20
Arabian Amines Company [Member]                
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage       50.00%        
Long-Term Debt, Excluding Current Maturities       $ 7        
Huntsman International LLC [Member]                
Long-Term Debt, Excluding Current Maturities [1]       1,658 1,510      
Repayments of Notes Payable       (0) 218 $ (0)    
Huntsman Polyurethanes Shanghai Ltd. [Member] | Shanghai Lianheng Isocyanate Company Ltd. (“SLIC”) [Member]                
Repayments of Notes Payable     $ 190          
The Revolving Credit Facility [Member]                
Long-Term Line of Credit       343 0      
The Revolving Credit Facility [Member] | Letter of Credit [Member]                
Long-Term Line of Credit       $ 3        
The Revolving Credit Facility [Member] | Term Secured Overnight Financing Rate (Term SOFR) [Member]                
Debt Instrument, Basis Spread on Variable Rate       1.65%        
The Revolving Credit Facility [Member] | EURIBOR Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate       1.55%        
The Revolving Credit Facility [Member] | Huntsman International LLC [Member]                
Line of Credit Facility, Maximum Borrowing Capacity       $ 1,200        
Long-Term Line of Credit       $ 343        
Senior Notes Maturing April 2025 [Member] | Huntsman International LLC [Member]                
Repayments of Senior Debt   $ 315            
The Senior Notes [Member] | Huntsman International LLC [Member] | Debt Instrument Redemption Period Upon Occurrence of Certain Change of Control Events [Member]                
Debt Instrument, Redemption Price, Percentage       101.00%        
The 2029 Senior Notes [Member] | Huntsman International LLC [Member]                
Debt Instrument, Redemption Price, Percentage       100.00%        
Debt Instrument, Interest Rate, Stated Percentage       4.50%        
The 2031 Senior Notes [Member] | Huntsman International LLC [Member]                
Debt Instrument, Redemption Price, Percentage       100.00%        
Debt Instrument, Interest Rate, Stated Percentage       2.95%        
The 2034 Senior Notes [Member] | Huntsman International LLC [Member]                
Debt Instrument, Redemption Price, Percentage       100.00%        
Debt Instrument, Interest Rate, Stated Percentage       5.70%        
US A/R Program [Member]                
Maximum Funding Availability [2]       $ 180        
US A/R Program [Member] | Term Secured Overnight Financing Rate (Term SOFR) [Member]                
Debt Instrument, Basis Spread on Variable Rate [3]       0.85%        
US A/R Program [Member] | Huntsman International LLC [Member]                
Maximum Funding Availability             $ 180  
Letters of Credit Outstanding, Amount       $ 5        
Accounts Receivable Programs [Member] | Huntsman International LLC [Member] | Asset Pledged as Collateral [Member]                
Accounts Receivable, after Allowance for Credit Loss       $ 281 $ 233      
Subsequent Event [Member] | The Revolving Credit Facility [Member] | Huntsman International LLC [Member]                
Line of Credit Facility, Maximum Borrowing Capacity $ 800              
Line Of Credit Facility, Contingent Increase, Additional Borrowing Capacity $ 400              
[1] At December 31, 2025 and December 31, 2024, respectively, $3 and $6 of cash and cash equivalents, $24 and $19 of accounts and notes receivable (net), $50 and $57 of inventories, $122 and $124 of property, plant and equipment (net), $35 and $37 of other noncurrent assets, $91 and $111 of accounts payable, $22 and $21 of accrued liabilities, $7 and $9 of current portion of debt, $6 each of current operating lease liabilities, nil and $7 of long-term debt, $12 and $15 of noncurrent operating lease and $15 and $16 of other noncurrent liabilities from consolidated variable interest entities are included in the respective Balance Sheets captions above. See “Note 8. Variable Interest Entities.” These assets can only be used to settle obligations of the variable interest entities, and creditors of these liabilities do not have recourse to our general credit.
[2] The amount of actual availability under our A/R Programs may be lower based on the level of eligible receivables sold, changes in the credit ratings of our customers, customer concentration levels and certain characteristics of the accounts receivable being transferred, as defined in the applicable agreements.
[3] The applicable rate for our U.S. A/R Program is defined by the lenders as the Asset-Backed Commercial Paper rate. The applicable rate for our EU A/R Program is either Term SOFR, EURIBOR or SONIA (Sterling Overnight Interbank Average Rate).