Property, Plant and Equipment, net (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Components of property, plant and equipment net
Property, plant and equipment, gross	$ 847.3	$ 905.0
Less accumulated depreciation	718.1	748.0
Property, plant and equipment, net	129.2	157.0
Land and land improvements
Components of property, plant and equipment net
Property, plant and equipment, gross	10.5	11.3
Buildings
Components of property, plant and equipment net
Property, plant and equipment, gross	93.6	95.0
Machinery and equipment
Components of property, plant and equipment net
Property, plant and equipment, gross	736.5	791.3
Capital leases
Components of property, plant and equipment net
Property, plant and equipment, gross	2.0	2.0
Construction in process
Components of property, plant and equipment net
Property, plant and equipment, gross	$ 4.7	$ 5.4