Inventories (Details) - USD ($) $ in Thousands	Feb. 28, 2019	Sep. 01, 2018	Aug. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 2,424,324		$ 2,070,569
Work in process	467,496		788,742
Finished goods	422,910		659,335
Reserve for excess and obsolete inventory	(66,457)		(60,940)
Inventories, net	$ 3,248,273	$ 2,996,435	$ 3,457,706

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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