Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
United States	$ (0.5)	$ (0.3)	$ (0.4)
State and local	0.3	0.4	0.2
Foreign	25.9	22.3	15.6
Total current	25.7	22.4	15.4
Deferred:
United States	(4.6)	0.1	0.2
State and local	(0.2)	(0.2)	(0.8)
Foreign	(0.5)	(0.3)	(5.9)
Total deferred	(5.3)	(0.4)	(6.5)
Total income tax expense	$ 20.4	$ 22.0	$ 8.9