Quarterly report pursuant to Section 13 or 15(d)

EMPLOYEE BENEFIT PLANS (Details)

v3.20.2
EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Components of net periodic benefit cost        
Amortization of actuarial loss $ 19 $ 16 $ 37 $ 33
Contributions to pension and other postretirement benefit plans     46 38
Expected contributions to pension and other postretirement benefit plans during remainder of the year 41   41  
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES        
Components of net periodic benefit cost        
Amortization of actuarial loss 21 17 39 35
Defined Benefit Plans        
Components of net periodic benefit cost        
Service cost 12 12 26 25
Interest cost 16 20 31 40
Expected return on assets (42) (39) (85) (78)
Amortization of prior service benefit (1) (1) (3) (3)
Amortization of actuarial loss 19 17 39 34
Net periodic benefit cost 4 9 8 18
Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES        
Components of net periodic benefit cost        
Service cost 12 12 26 25
Interest cost 16 20 31 40
Expected return on assets (42) (39) (85) (78)
Amortization of prior service benefit (1) (1) (3) (3)
Amortization of actuarial loss 20 19 41 36
Net periodic benefit cost 5 11 10 20
Other Postretirement Benefit Plans        
Components of net periodic benefit cost        
Service cost 1 1 1 1
Interest cost     1 1
Amortization of prior service benefit (1) (1) (2) (2)
Other Postretirement Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES        
Components of net periodic benefit cost        
Service cost 1 1 1 1
Interest cost     1 1
Amortization of prior service benefit $ (1) $ (1) $ (2) $ (2)