Quarterly report pursuant to Section 13 or 15(d)

EMPLOYEE BENEFIT PLANS (Details)

v3.19.1
EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Components of net periodic benefit cost    
Amortization of actuarial loss $ 18 $ 17
Contributions to pension and other postretirement benefit plans 22 25
Expected contributions to pension and other postretirement benefit plans during remainder of 2017 71  
HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES    
Components of net periodic benefit cost    
Amortization of actuarial loss 19 20
Defined Benefit Plans    
Components of net periodic benefit cost    
Service cost 15 17
Interest cost 21 20
Expected return on assets (41) (43)
Amortization of prior service benefit (2) (2)
Amortization of actuarial loss 18 18
Settlement loss   2
Net periodic benefit cost 11 12
Defined Benefit Plans | HUNTSMAN INTERNATIONAL LLC AND SUBSIDIARIES    
Components of net periodic benefit cost    
Service cost 15 17
Interest cost 21 20
Expected return on assets (41) (43)
Amortization of prior service benefit (2) (2)
Amortization of actuarial loss 19 19
Settlement loss   2
Net periodic benefit cost 12 13
Other Postretirement Benefit Plans    
Components of net periodic benefit cost    
Service cost   1
Interest cost 1 1
Amortization of prior service benefit (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
Interest cost 1 1
Amortization of prior service benefit $ (1) (1)
Net periodic benefit cost   $ 1