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Inventories (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Schedule of Inventory    
Finished goods $ 99.5 $ 99.9
Work-in-progress 185.8 162.6
Raw materials 83.4 77.6
Total inventories 368.7 340.1
Inventories awaiting regulatory approval $ 7.2 $ 22.7