Other Income, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Income and Expenses [Abstract]
Interest income	$ 0.0	$ 0.1
Realized gain on investments	0.7	0.0
All other (expense) income, net	(0.1)	0.2
Other income, net	$ 0.6	$ 0.3