INTANGIBLE ASSETS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
INTANGIBLE ASSETS
Carrying Amount	$ 32	$ 32
Accumulated Amortization	12	9
Net	20	23
Amortization expense	3	4	$ 1
Estimated future amortization expense
2018	3
2019	4
2020	3
2021	4
2022	3
Patents, trademarks and technology
INTANGIBLE ASSETS
Carrying Amount	17	18
Accumulated Amortization	6	1
Net	11	17
Other intangibles
INTANGIBLE ASSETS
Carrying Amount	15	14
Accumulated Amortization	6	8
Net	$ 9	$ 6