Components of Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Gross PP&E	$ 1,226.4	$ 1,165.3
Less accumulated depreciation and amortization	618.7	576.7
Net PP&E	607.7	588.6
Land
Property, Plant and Equipment [Line Items]
Gross PP&E	27.9	25.1
Building and Building Improvements
Property, Plant and Equipment [Line Items]
Gross PP&E	300.3	284.7
Machinery and Equipment
Property, Plant and Equipment [Line Items]
Gross PP&E	699.3	680.1
Software
Property, Plant and Equipment [Line Items]
Gross PP&E	95.8	90.4
Office equipment and other assets
Property, Plant and Equipment [Line Items]
Gross PP&E	66.7	60.8
Construction in progress
Property, Plant and Equipment [Line Items]
Gross PP&E	$ 36.4	$ 24.2