Other Expense (Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Income and Expenses [Abstract]
Pension settlement charge	$ 50.4	$ 0.0	$ 0.0
Executive retirement and related costs	10.9	0.0	0.0
License costs	0.0	1.2	0.0
Development income	(1.5)	(1.6)	(2.0)
Acquisition-related contingencies	1.1	1.0	1.0
Foreign exchange and other	0.8	0.8	(0.5)
Other Income Expense	$ (60.1)	$ 0.2	$ 0.5