Inventories - Components of Inventories (Detail) - USD ($) $ in Thousands	Feb. 29, 2020	Aug. 31, 2019
Inventory Disclosure [Abstract]
Manufacturing supplies and raw materials	$ 352,291	$ 387,015
Work-in-process	161,616	156,614
Finished goods	206,035	130,576
Excess and obsolete adjustment	(10,827)	(9,512)
Inventories	$ 709,115	$ 664,693

Amount of inventory reserves for last-in first-out (LIFO) and other inventory valuation methods.

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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.

+ References

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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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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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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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