Other Income, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income and Expenses [Abstract]
Interest income	$ 0.4	$ 1.0	$ 0.4
Unrealized gains on financial derivatives	0.0	3.6	3.2
Realized gain on investments	0.8	1.0	1.4
Dividends received from distribution of third-party trust	0.0	0.0	0.6
All other, net3	(3.0)	1.1	0.0
Other (expense) income, net	$ (1.8)	$ 6.7	$ 5.6