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Inventories (Details) - USD ($)
$ in Thousands
May 31, 2019
Sep. 01, 2018
Aug. 31, 2018
Inventory Disclosure [Abstract]      
Raw materials $ 2,388,902   $ 2,070,569
Work in process 501,168   788,742
Finished goods 333,224   659,335
Reserve for excess and obsolete inventory (63,925)   (60,940)
Inventories, net $ 3,159,369 $ 2,996,435 $ 3,457,706