Overview, Basis of Presentation and Significant Accounting Policies - Components of Company's Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 93.1	$ 89.6
Less: Accumulated depreciation	(72.3)	(70.9)
Total	20.8	18.7
Land
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	2.8	0.3
Buildings
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	20.8	20.8
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 69.5	$ 68.5