SUPPLEMENTAL CASH FLOW & OTHER DATA (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract]
Depreciation expense	$ 177	$ 223	$ 220
Amortization expense	72	81	94
Depreciation and amortization expense	249	304	314
Interest expense	(144)	(154)	(167)
Interest income	1	1	3
Interest expense, net	(143)	(153)	(164)
Interest paid	148	172	170
Income taxes paid	361	319	327
Assets acquired under capital leases	0	3	12
Accounts payable associated with capital expenditures	9	15	26
Dividend payable	62	55	48
Fair value of assets acquired	139	63	853
Fair value of liabilities assumed	0	0	85
Fair value of net assets acquired	139	63	768
Merger consideration paid (payable)	0	4	(30)
Cash paid for business acquisitions	139	67	738
Less: cash acquired		0	10
Business acquisitions, net of cash acquired	$ 139	$ 67	$ 728