Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Employee Benefit Plans - Components of Net Periodic Benefit Costs (Details)

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Note 12 - Employee Benefit Plans - Components of Net Periodic Benefit Costs (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Amortization of actuarial loss $ 13 $ 21 $ 27 $ 43
Huntsman International LLC [Member]        
Amortization of actuarial loss 13 22 27 45
Defined Benefit Plans [Member]        
Service cost 12 14 24 28
Interest cost 15 12 29 24
Expected return on assets (41) (42) (83) (84)
Amortization of prior service benefit (2) (1) (3) (3)
Amortization of actuarial loss 14 23 28 46
Net periodic benefit (credit) cost (2) 6 (5) 14
Settlement loss     0 3
Defined Benefit Plans [Member] | Huntsman International LLC [Member]        
Service cost 12 14 24 28
Interest cost 15 12 29 24
Expected return on assets (41) (42) (83) (84)
Amortization of prior service benefit (2) (1) (3) (3)
Amortization of actuarial loss 14 23 28 47
Net periodic benefit (credit) cost (2) 6 (5) 15
Settlement loss     0 3
Other Postretirement Benefits Plan [Member]        
Service cost 0 0 0 0
Interest cost 1 1 1 1
Expected return on assets 0 0 0 0
Amortization of prior service benefit (1) (1) (2) (2)
Amortization of actuarial loss 0 0 1 1
Net periodic benefit (credit) cost 0 0 0 0
Settlement loss     0 0
Other Postretirement Benefits Plan [Member] | Huntsman International LLC [Member]        
Service cost 0 0 0 0
Interest cost 1 1 1 1
Expected return on assets 0 0 0 0
Amortization of prior service benefit (1) (1) (2) (2)
Amortization of actuarial loss 0 0 1 1
Net periodic benefit (credit) cost $ 0 $ 0 0 0
Settlement loss     $ 0 $ 0