SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Debt Conversion [Line Items]
Noncash conversion of zero-coupon convertible debt			$ 0.0	$ 1,762.5
Fair Value of Assets Acquired	$ 6.6	$ 0.0	12.1	18.1
Capital Expenditures Incurred but Not yet Paid			(1.6)	(2.2)
Cash paid during period for:
Interest			179.5	126.5
Income taxes, net of refunds			260.9	237.6
Disclosure of non-cash financing and investing activities:
Restricted Stock Awards And Performance Shares Surrendered			0.0	10.8
Other Significant Noncash Transaction, Value of Consideration Given			$ 67.4	$ 88.9