Derivative Financial Instruments and Hedging Activities - Derivative Assets and Liabilities Not Designated as Hedging Instruments (Details) - Not Designated as Hedging Instrument - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2023	Aug. 31, 2022	Aug. 31, 2021
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (392,365)	$ (556,656)	$ (942,710)
Commodity derivatives | Cost of goods sold
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(360,937)	(568,877)	(971,581)
Foreign exchange derivatives | Cost of goods sold
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(30,898)	9,587	25,277
Foreign exchange derivatives | Marketing, general and administrative expenses
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	(530)	577	1,105
Other derivatives | Other income
Derivative [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ 0	$ 2,057	$ 2,489