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 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Amortization of actuarial loss $ 10 $ 19 $ 32 $ 56
Defined Benefit Plans [Member]        
Service cost 11 12 34 38
Interest cost 13 13 41 36
Expected return on assets (37) (39) (113) (115)
Amortization of prior service benefit (2) (2) (4) (4)
Amortization of actuarial loss 12 20 36 60
Net periodic benefit (credit) cost (3) 4 (6) 18
Settlement loss     0 3
Defined Benefit Plans [Member] | Huntsman International LLC [Member]        
Service cost 11 12 34 38
Interest cost 13 13 41 36
Expected return on assets (37) (39) (113) (115)
Amortization of prior service benefit (2) (2) (4) (4)
Amortization of actuarial loss 12 21 36 62
Net periodic benefit (credit) cost (3) 5 (6) 20
Settlement loss     0 3
Other Postretirement Benefits Plan [Member]        
Service cost 1 1 1 1
Interest cost 0 0 1 1
Expected return on assets 0 0 0 0
Amortization of prior service benefit (1) (1) (3) (3)
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 1 1 1 1
Interest cost 0 0 1 1
Expected return on assets 0 0 0 0
Amortization of prior service benefit (1) (1) (3) (3)
Amortization of actuarial loss 0 0 1 1
Net periodic benefit (credit) cost $ 0 $ 0 0 0
Settlement loss     $ 0 $ 0