Interest and Other Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Other Nonoperating Income (Expense) [Abstract]
Interest expense	$ 9.3	$ 9.5
Interest income	(1.0)	(0.7)
Foreign exchange losses	0.1	0.9
Miscellaneous expenses, net	6.5	3.0
Interest and other expenses	$ 14.9	$ 12.7