Property, Plant and Equipment, net (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Components of property, plant and equipment net
Land and land improvements	$ 13.7	$ 13.8
Buildings	94.3	91.0
Machinery and Equipment	790.8	827.7
Capital Leased Assets, Gross	0.4	0
Property plant and equipment other, Gross	899.2	932.5
Less accumulated depreciation	742.9	754.6
Property plant and equipment net excluding construction in process	156.3	177.9
Construction in process	8.5	11.5
Property, plant and equipment, net	$ 164.8	$ 189.4