Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Employee Benefit Plans - Components of Net Periodic Benefit Costs (Details)

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Note 11 - Employee Benefit Plans - Components of Net Periodic Benefit Costs (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Amortization of actuarial loss $ 8 $ 12
Huntsman International LLC [Member]    
Amortization of actuarial loss 8 12
Defined Benefit Plans [Member]    
Service cost 6 11
Interest cost 23 13
Expected return on assets (31) (38)
Amortization of prior service benefit (1) (1)
Amortization of actuarial loss 8 12
Net periodic benefit cost (credit) 5 (3)
Defined Benefit Plans [Member] | Huntsman International LLC [Member]    
Service cost 6 11
Interest cost 23 13
Expected return on assets (31) (38)
Amortization of prior service benefit (1) (1)
Amortization of actuarial loss 8 12
Net periodic benefit cost (credit) 5 (3)
Other Postretirement Benefits Plan [Member]    
Service cost 0 0
Interest cost 1 0
Expected return on assets 0 0
Amortization of prior service benefit (1) (1)
Amortization of actuarial loss 0 1
Net periodic benefit cost (credit) 0 0
Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]    
Service cost 0 0
Interest cost 1 0
Expected return on assets 0 0
Amortization of prior service benefit (1) (1)
Amortization of actuarial loss 0 1
Net periodic benefit cost (credit) $ 0 $ 0