Property, Net (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, gross	$ 1,431.3	$ 1,382.2
Less accumulated depreciation and amortization	(943.6)	(920.6)
Property, net	487.7	461.6
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, gross	48.9	40.7
Properties under capital leases	0.1	1.7
Buildings
Property, Plant and Equipment [Line Items]
Property, gross	314.0	303.5
Properties under capital leases	3.6	16.5
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, gross	$ 1,068.4	$ 1,038.0