Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 1,465.9	$ 1,434.8
Less: accumulated depreciation	(889.8)	(824.4)
Property, plant and equipment, net	576.1	610.4
Land and improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	63.1	64.9
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	343.6	341.4
Machinery and equipment
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 1,059.2	$ 1,028.5