OTHER NONCURRENT LIABILITIES (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
OTHER NONCURRENT LIABILITIES
Pension liabilities	$ 230	$ 266
Employee benefit accrual	4	5
Asset retirement obligations	26	26
Other postretirement benefits	3	3
Environmental reserves	11	12
Restructuring and plant closing costs	23	7
Other	9	5
Total	$ 306	$ 324