Supplemental Cash Flow Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Supplemental Cash Flow Information [Abstract]
Cash paid for interest	$ 78.1		$ 110.7		$ 130.6
Cash paid for income taxes, net of refunds	103.9	[1]	111.8	[1]	95.7	[1]
Proceeds from Income Tax Refunds	$ 21.3		$ 15.0		$ 23.5

[1] Refunds of $21.3, $15.0 and $23.5 were received for the years ended December 31, 2014, 2013 and 2012, respectively.