Property, Plant and Equipment (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment		$ 618.7	$ 645.2
Less: accumulated depreciation		(355.0)	(366.7)
Property, plant and equipment, net	[1]	263.7	278.5
Computer software included in net property, plant and equipment		51.9	42.1
Amortization of software costs		8.2	7.1	$ 7.0
Land and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment		25.2	28.0
Building and improvements to leaseholds
Property, Plant and Equipment [Line Items]
Property, plant and equipment		144.2	152.6
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment		440.7	453.5
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment		$ 8.6	$ 11.1

[1] Net property, plant and equipment as of December 31, 2018 and 2017 contained $51.9 million and $42.1 million, respectively of computer software assets, respectively, which are classified within machinery and equipment and construction in progress. Amortization expense for software was $8.2 million, $7.1 million and $7.0 million for the years ended December 31, 2018, 2017 and 2016, respectively.