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SUPPLEMENTAL CASH FLOW & OTHER DATA (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Supplemental Cash Flow Elements [Abstract]        
Depreciation expense $ 57 $ 55 $ 169 $ 164
Amortization expense 20 24 61 71
Depreciation and amortization expense 77 79 230 235
Interest expense (35) (42) (118) (124)
Interest income 0 1 1 2
Interest expense, net (35) (41) (117) (122)
Interest paid 52 51 151 133
Income taxes paid 140 98 249 236
Assets acquired under capital leases 0 2 2 12
Accounts payable associated with capital expenditures 11 12 11 12
Dividends payable 55 48 55 48
Fair value of assets acquired 35 1 37 846
Fair value of liabilities assumed 0 (1) 0 81
Fair value of net assets acquired 35 2 37 765
Merger consideration paid (payable), net 0 0 4 (30)
Cash paid for business acquisitions 35 2 41 735
Less: Cash acquired 0 0 0 10
Business acquisitions, net of cash acquired $ 35 $ 2 $ 41 $ 725