Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Effective Income Tax Rate [Abstract]
Effective income tax rate, continuing operations	37.70%	44.50%	41.10%	43.00%
Income tax of equity in earnings of affiliates	$ (5.8)	$ (7.5)	$ (11.2)	$ 13.5