RESTRUCTURING ACTIVITIES (Narrative) (Details) - Invigorate Program [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 12	$ 3
Accounts Payable and Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	27		$ 22
Cost of Revenue [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	4	2
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 8	$ 1