Summary of Significant Accounting Policies (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total property, plant and equipment		$ 522.6
Total property, plant and equipment	$ 560.1
Less: Accumulated depreciation	322.5
Less: Accumulated depreciation		303.2
Property, plant and equipment, net	237.6
Property, plant and equipment, net		219.4
Land and land improvements
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	12.1	11.9
Buildings
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 84.8	82.3
Buildings | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Buildings | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	40 years
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 424.0	392.6
Machinery and equipment | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	1 year
Property, plant and equipment, useful life, majority range	3 years
Machinery and equipment | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years
Property, plant and equipment, useful life, majority range	10 years
Leased property under finance leases
Property, Plant and Equipment [Line Items]
Leased property under finance leases	$ 39.2
Leased property under finance leases
Property, Plant and Equipment [Line Items]
Total property, plant and equipment		$ 35.8