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Components of Inventory (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Schedule of Inventory [Line Items]    
Purchased materials and component parts $ 165.3 $ 140.0
Work-in-process 295.4 229.0
Finished goods 1,019.7 1,003.0
Inventory, Net, Total $ 1,480.4 $ 1,372.0