Property, Plant and Equipment - Major Components of Property, Plant, and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment
Total property, plant and equipment	$ 460.8	$ 418.1
Accumulated depreciation	(220.4)	(153.3)
Property, plant and equipment, net	240.4	264.8
Land and leasehold improvements
Property, Plant and Equipment
Total property, plant and equipment	53.2	68.6
Buildings and improvements
Property, Plant and Equipment
Total property, plant and equipment	139.5	113.5
Machinery, equipment, fixtures and software
Property, Plant and Equipment
Total property, plant and equipment	245.8	220.0
Construction in process
Property, Plant and Equipment
Total property, plant and equipment	$ 22.3	$ 16.0