Income Taxes (Details 1) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Provision (benefit) for income taxes	$ 20.0	$ 28.9	$ 47.6	$ 7.6
Effective tax rate	30.80%	43.40%	30.60%	(8.50%)