Quarterly report pursuant to Section 13 or 15(d)

EMPLOYEE BENEFIT PLANS (Details)

v3.19.2
EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Components of net periodic benefit cost        
Amortization of actuarial loss $ 17 $ 18 $ 35 $ 35
Contributions to pension and other postretirement benefit plans     42 46
Expected contributions to pension and other postretirement benefit plans during remainder of the year 51   51  
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES        
Components of net periodic benefit cost        
Amortization of actuarial loss 18 17 37 37
Defined Benefit Plans        
Components of net periodic benefit cost        
Service cost 14 16 29 33
Interest cost 21 20 42 40
Expected return on assets (41) (43) (82) (86)
Amortization of prior service benefit (1) (1) (3) (3)
Amortization of actuarial loss 18 18 36 36
Settlement loss       2
Net periodic benefit cost 11 10 22 22
Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES        
Components of net periodic benefit cost        
Service cost 14 16 29 33
Interest cost 21 20 42 40
Expected return on assets (41) (43) (82) (86)
Amortization of prior service benefit (1) (1) (3) (3)
Amortization of actuarial loss 19 19 38 38
Settlement loss       2
Net periodic benefit cost 12 11 24 24
Other Postretirement Benefit Plans        
Components of net periodic benefit cost        
Service cost     1 1
Interest cost 1 1 1 2
Amortization of prior service benefit (1) (2) (3) (3)
Amortization of actuarial loss   1 1 1
Net periodic benefit cost       1
Other Postretirement Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES        
Components of net periodic benefit cost        
Service cost     1 1
Interest cost 1 1 1 2
Amortization of prior service benefit   (2) (3) (3)
Amortization of actuarial loss $ (1) $ 1 $ 1 1
Net periodic benefit cost       $ 1