Income Taxes (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Tax Holiday [Line Items]
Effective tax rate (benefit) provision	1.90%	72.30%	13.50%	99.70%
Effective income tax rate reconciliation, discrete items	$ (0.9)	$ 32.7	$ 1.7	$ 35.7
Valuation allowance		$ 36.8	$ 2.0
Pre-discrete tax rate (benefit) provision	7.60%	0.90%	7.50%	(0.30%)
Unrecognized tax benefits, increase resulting from prior period tax positions			$ 0.6
Foreign Tax Authority
Income Tax Holiday [Line Items]
Effective income tax rate reconciliation, tax holiday	$ (0.4)	$ 4.4	$ 1.8
Holiday benefit (usd per share)	$ (0.01)		$ 0.02