SUPPLEMENTAL CASH FLOW & OTHER DATA (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Supplemental Cash Flow Elements [Abstract]
Depreciation expense	$ 56	$ 52	$ 109	$ 103
Amortization expense	25	20	47	39
Interest paid	30	32	82	84
Income taxes paid	129	121	138	205
Assets acquired under capital leases	8	2	10	2
Increase in accounts payable associated with capital expenditures	33	0	12	0
Fair value of assets acquired	199	90	845	241
Fair value of liabilities assumed	12	0	82	11
Fair value of net assets acquired	187	90	763	230
Merger consideration paid (payable), net	(30)		(30)	(50)
Cash paid for business acquisitions	157	90	733	180
Less: Cash acquired	1	0	10	0
Business acquisitions, net of cash acquired	$ 156	$ 90	$ 723	$ 180