RESTRUCTURING ACTIVITIES (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 7	$ 3	$ 19	$ 6
Accounts Payable and Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	23		23		$ 22
Cost of Revenue [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	3	2	7	4
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 4	$ 1	$ 12	$ 2