SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Debt Conversion [Line Items]
Noncash conversion of zero-coupon convertible debt	$ 2.8	$ 5.4
Fair Value of Assets Acquired	3.1	0
Increase (Decrease) in Accrued Liabilities	4.7	(0.1)
Cash paid during period for:
Interest	18.8	24.5
Income taxes, net of refunds	8.6	11.1
Restricted Stock Awards And Performance Shares Surrendered	$ 4.6	$ 2.4