RESTRUCTURING, IMPAIRMENT AND PLANT CLOSING COSTS - RESERVES FOR RESTRUCTURING, IMPAIRMENT AND PLANT CLOSING COSTS (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accrued restructuring costs roll forward
Accrued liabilities at the beginning of the period			$ 21
Restructuring charges	$ 16	$ 6	42	$ 22
Restructuring payments			(23)
Foreign currency effect on liability balance			1
Accrued liabilities at the end of the period	41		41
Current portion of restructuring reserves	37		37
Long-term portion of restructuring reserves	4		4
Titanium Dioxide
Accrued restructuring costs roll forward
Accrued liabilities at the beginning of the period			12
Restructuring charges			33
Restructuring payments			(14)
Foreign currency effect on liability balance			1
Accrued liabilities at the end of the period	32		32
Current portion of restructuring reserves	28		28
Long-term portion of restructuring reserves	4		4
Performance Additives
Accrued restructuring costs roll forward
Accrued liabilities at the beginning of the period			9
Restructuring charges			9
Restructuring payments			(9)
Accrued liabilities at the end of the period	9		9
Current portion of restructuring reserves	$ 9		$ 9