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Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Nov. 30, 2012
Aug. 31, 2012
Inventory Disclosure [Line Items]    
Raw materials $ 1,595,422 $ 1,534,182
Work in process 536,593 444,721
Finished goods 333,786 290,046
Inventories $ 2,465,801 $ 2,268,949