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Inventories (Detail) (USD $)
In Thousands, unless otherwise specified
Aug. 31, 2014
Aug. 31, 2013
Inventory Disclosure [Abstract]    
Raw materials $ 1,096,299 $ 1,274,588
Work in process 537,033 526,476
Finished goods 374,745 317,652
Inventories $ 2,008,077 $ 2,118,716