Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Property, Plant and Equipment
Cost	$ 690.2		$ 690.2		$ 707.2
Less accumulated depreciation	(508.0)		(508.0)		(506.4)
Total	182.2		182.2		200.8
Depreciation	11.0	$ 11.8	22.7	$ 23.6
Restructuring charges	0.5	0.1	7.1	0.3
Severance Pay and Contract Termination and Other Costs
Property, Plant and Equipment
Restructuring charges	0.5	0.1	7.1	$ 0.3
Severance Pay and Contract Termination and Other Costs \| Operating Segments \| Corporate, Non-Segment [Member]
Property, Plant and Equipment
Restructuring charges	0.5	$ 0.0
Land
Property, Plant and Equipment
Cost	12.6		12.6		12.9
Buildings and improvements
Property, Plant and Equipment
Cost	115.6		115.6		119.3
Machinery, equipment, and other
Property, Plant and Equipment
Cost	$ 562.0		$ 562.0		$ 575.0