SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Debt Conversion [Line Items]
Noncash conversion of zero-coupon convertible debt			$ 0.0	$ 1,762.5
Fair Value of Assets Acquired	$ 4.9	$ 0.0	9.5	18.0
Capital Expenditures Incurred but Not yet Paid			1.7	0.3
Cash paid during period for:
Interest			103.6	54.5
Income taxes, net of refunds			164.9	90.6
Disclosure of non-cash financing and investing activities:
Restricted Stock Awards And Performance Shares Surrendered			33.1	10.4
Other Significant Noncash Transaction, Value of Consideration Given			$ 40.7	$ 58.8