Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Continuing Operations	42.80%	38.50%	34.20%	37.00%
Tax Adjustments, Settlements, and Unusual Provisions	$ 1.0		$ (6.2)	$ (2.5)
Income tax receivables	$ 12.8		$ 12.8		$ 6.6