Property, Net (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, gross	$ 1,463.4	$ 1,382.2
Less accumulated depreciation and amortization	(976.9)	(920.6)
Property, net	486.5	461.6
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, gross	48.4	40.7
Properties under capital leases	1.7	1.7
Buildings
Property, Plant and Equipment [Line Items]
Property, gross	327.0	303.5
Properties under capital leases	16.5	16.5
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, gross	$ 1,088.0	$ 1,038.0