SUPPLEMENTAL CASH FLOW INFORMATION (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2016	Dec. 31, 2015
Cash paid during period for:
Interest	$ 117.8	$ 210.7	$ 166.1
Income taxes, net of refunds	284.1	345.7	237.6
Disclosure of non-cash financing and investing activities
Surrender of restricted stock awards and performance shares	6.6	34.6	12.6
Noncash conversion of zero-coupon convertible debt	9.9	39.1	1.1
Fair Value of Assets Acquired	29.0	16.0	22.6
Capital Expenditures Incurred but Not yet Paid	$ 6.2	$ 4.4	$ 4.3