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Inventories (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Inventory, work in process and raw materials $ 211.8 $ 177.0
Inventory, finished goods 20.5 26.9
Inventory, gross 232.3 203.9
Inventory valuation reserves (23.8) (26.7)
Inventories, net $ 208.5 $ 177.2