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Components of Inventories (Detail) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Inventory Disclosure [Line Items]    
Work-in-process $ 492,064,000 $ 508,426,000
Finished goods 517,904,000 347,979,000
Inventory, Net, Total $ 1,009,968,000 $ 856,405,000