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Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2013
Aug. 31, 2012
Inventory Disclosure [Abstract]    
Raw materials $ 1,412,948 $ 1,534,182
Work in process 548,096 444,721
Finished goods 341,111 290,046
Inventories $ 2,302,155 $ 2,268,949