RESTRUCTURING ACTIVITIES (Activities of Restructuring Liabilities) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Beginning balance	$ 38	$ 22
Income statement (income) expense	(3)	49
Cash payments	(25)	(33)
Other	(1)
Ending balance	9	38
Employee Separation Costs
Restructuring Reserve [Roll Forward]
Beginning balance	37	21
Income statement (income) expense	(3)	45
Cash payments	(25)	(29)
Other	0
Ending balance	9	37
Facility-Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance	1	1
Income statement (income) expense	0	4
Cash payments	0	(4)
Other	(1)
Ending balance	$ 0	$ 1