Property, Plant and Equipment, net (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Property, Plant and Equipment
Cost	$ 641.4	$ 641.4		$ 645.3
Less accumulated depreciation	(448.6)	(448.6)		(438.8)
Total	192.8	192.8		206.5
Depreciation	12.0	24.0	$ 23.5
Land
Property, Plant and Equipment
Cost	7.8	7.8		7.7
Buildings and improvements
Property, Plant and Equipment
Cost	102.7	102.7		104.5
Machinery, equipment, and other
Property, Plant and Equipment
Cost	$ 530.9	$ 530.9		$ 533.1

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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