RESTRUCTURING ACTIVITIES (Activities of Restructuring Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Restructuring Reserve [Roll Forward]
Beginning balance	$ 9	$ 19
Income statement expense	30	11
Cash payments	(17)	(21)
Ending balance	22	9
Employee Separation Costs [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	6	16
Income statement expense	29	9
Cash payments	(14)	(19)
Ending balance	21	6
Facility-Related Costs [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	3	3
Income statement expense	1	2
Cash payments	(3)	(2)
Ending balance	$ 1	$ 3