Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, plant and equipment, Net
Property, plant and equipment, gross	$ 687.8	$ 616.5
Less accumulated depreciation and amortization	(421.3)	(377.4)
Property, plant and equipment, net	266.5	239.1
Depreciation and amortization	34.3	32.6	$ 32.6
Impairment charge on property, plant and equipment	1.1	0.8	$ 2.1
Land
Property, plant and equipment, Net
Property, plant and equipment, gross	28.1	26.7
Building and leasehold improvements
Property, plant and equipment, Net
Property, plant and equipment, gross	294.8	266.7
Machinery, equipment, software and furniture and fixtures
Property, plant and equipment, Net
Property, plant and equipment, gross	$ 364.9	$ 323.1