Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total gross book value	$ 1,008.2	$ 1,019.1
Less accumulated depreciation	(479.2)	(489.8)
Total net book value	529.0	529.3
Land [Member]
Property, Plant and Equipment [Line Items]
Total gross book value	42.5	44.7
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total gross book value	217.5	206.5
Machinery, Equipment and Office Furnishings [Member]
Property, Plant and Equipment [Line Items]
Total gross book value	696.4	714.4
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Total gross book value	$ 51.8	$ 53.5