Income Taxes (Details 1) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]
Provision for income taxes	$ (2.2)	$ 19.9	$ 53.4	$ 78.0
Effective tax rate	17.70%	36.40%	33.10%	35.50%