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 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Amortization of actuarial loss $ 7 $ 10 $ 15 $ 22
Huntsman International LLC [Member]        
Amortization of actuarial loss 7 10 15 22
Defined Benefit Plans [Member]        
Service cost 7 12 13 23
Interest cost 23 15 46 28
Expected return on assets (32) (38) (63) (76)
Amortization of prior service benefit (1) (1) (2) (2)
Amortization of actuarial loss 8 11 16 23
Net periodic benefit cost (credit) 5 (1) 10 (4)
Defined Benefit Plans [Member] | Huntsman International LLC [Member]        
Service cost 7 12 13 23
Interest cost 23 15 46 28
Expected return on assets (32) (38) (63) (76)
Amortization of prior service benefit (1) (1) (2) (2)
Amortization of actuarial loss 8 11 16 23
Net periodic benefit cost (credit) 5 (1) 10 (4)
Other Postretirement Benefits Plan [Member]        
Service cost 0 0 0 0
Interest cost 1 1 2 1
Expected return on assets 0 0 0 0
Amortization of prior service benefit (1) (1) (2) (2)
Amortization of actuarial loss 0 0 0 1
Net periodic benefit cost (credit) 0 0 0 0
Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]        
Service cost 0 0 0 0
Interest cost 1 1 2 1
Expected return on assets 0 0 0 0
Amortization of prior service benefit (1) (1) (2) (2)
Amortization of actuarial loss 0 0 0 1
Net periodic benefit cost (credit) $ 0 $ 0 $ 0 $ 0