Property, Plant and Equipment - Major Components of Property, Plant, and Equipment (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Property, plant and equipment
Total property, plant and equipment	$ 471.1	$ 460.8
Accumulated depreciation	(235.8)	(220.4)
Property, plant and equipment, net	235.3	240.4
Land and leasehold improvements
Property, plant and equipment
Total property, plant and equipment	52.3	53.2
Buildings and improvements
Property, plant and equipment
Total property, plant and equipment	138.1	139.5
Machinery, equipment, fixtures and software
Property, plant and equipment
Total property, plant and equipment	256.2	245.8
Construction in process
Property, plant and equipment
Total property, plant and equipment	$ 24.5	$ 22.3