RESTRUCTURING ACTIVITIES (Narrative) (Details) - Invigorate Program [Member] - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accounts Payable and Accrued Liabilities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 12		$ 12		$ 19
Cost of Revenue [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	$ 4	3	$ 17
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1	$ 2	$ 3	$ 4