Other (Expense) Income, Net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Other Income and Expenses [Abstract]
Interest income	$ 0.0	$ 0.0	$ 0.1	$ 0.2
Realized gain on investments	0.3	0.2	0.3	0.5
Loss on extinguishment of debt	(11.1)	0.0	(11.1)	0.0
All other, net	0.1	0.2	0.3	0.1
Other (expense) income, net	$ (10.7)	$ 0.4	$ (10.4)	$ 0.8