SUPPLEMENTAL CASH FLOW & OTHER DATA (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Supplemental Cash Flow Elements [Abstract]
Depreciation expense	$ 52	$ 45
Amortization expense	22	17
Depreciation and amortization expense	74	62
Interest expense	(41)	(37)
Interest income	0	1
Interest expense, net	(41)	(36)
Interest paid	49	46
Income taxes paid	2	8
Accounts payable associated with capital expenditures	16	12
Dividends payable	66	62
Fair value of assets acquired	148	1
Fair value of liabilities assumed	(1)	0
Fair value of net assets acquired	147	1
Merger consideration paid (payable), net	(12)	0
Cash paid for business acquisitions	135	1
Less: Cash acquired	5	0
Business acquisitions, net of cash acquired	$ 130	$ 1