Property, Plant and Equipment (Components) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Land	$ 33.9	$ 33.9
Buildings and improvements	218.2	211.8
Machinery and equipment	742.1	699.4
Capital leases	27.3	27.1
Construction in progress and equipment not yet in service	57.1	50.3
Total	1,078.6	1,022.5
Less accumulated depreciation	(717.2)	(682.9)
Property, plant and equipment, net	$ 361.4	$ 339.6	$ 358.6