RESTRUCTURING AND ASSET RELATED CHARGES - NET (Details) $ in Millions	3 Months Ended					12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($) employees	Jun. 30, 2016 USD ($) employees	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Charges						$ 3	$ 74	$ 4
2017 Restructuring [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 2	$ 8				3
Payments for Restructuring						(9)	(2)
Restructuring Reserve	8					$ 4	8
2017 Restructuring [Member] | Impairment of Long-Lived Assets and Other Assets [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges	62
2Q16 Restructuring [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 0						$ 0
Severance Costs			$ 2	$ 2	$ 1
Restructuring and Related Cost, Expected Number of Positions Eliminated | employees				16	5