Overview, Basis of Presentation and Significant Accounting Policies - Components of Company's Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 71.4	$ 86.1
Less: Accumulated depreciation	(62.5)	(72.6)
Total	8.9	13.5
Land
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	0.3	0.3
Buildings
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	15.1	17.8
Machinery and Equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 56.0	$ 68.0