Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, plant and equipment, Net
Property, plant and equipment, gross	$ 692.4	$ 687.8
Less accumulated depreciation and amortization	(421.8)	(421.3)
Property, plant and equipment, net	270.6	266.5	$ 239.1
Depreciation and amortization	36.0	34.3	32.6
Impairment charge on property, plant and equipment	0.0	1.1	$ 0.8
Land
Property, plant and equipment, Net
Property, plant and equipment, gross	26.8	28.1
Building and leasehold improvements
Property, plant and equipment, Net
Property, plant and equipment, gross	299.2	294.8
Machinery, equipment, software and furniture and fixtures
Property, plant and equipment, Net
Property, plant and equipment, gross	$ 366.4	$ 364.9