SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Debt Conversion [Line Items]
Fair Value of Assets Acquired	$ 0.9	$ 9.5
Capital Expenditures Incurred but Not yet Paid	2.8	1.7
Cash paid during period for:
Interest	102.2	103.6
Income taxes, net of refunds	127.9	161.6
Disclosure of non-cash financing and investing activities:
Restricted Stock Awards And Performance Shares Surrendered	46.2	33.1
Conversion of zero-coupon convertible debt	12.8	$ 4.9
Other Significant Noncash Transaction, Value of Consideration Given	$ 31.4