Supplemental Disclosure of Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Elements [Abstract]
Interest paid	$ 101.8	$ 85.9	$ 97.2
Income taxes paid, net of refunds	$ 14.9	$ 7.5	$ 8.4