Equity (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 31, 2022	Aug. 31, 2021	Aug. 31, 2020
Patronage [Line Items]
Total Patronage refunds, estimated	$ 1,162,700
Estimated Patronage distributed in cash	500,000
Patronage distributed in cash	51,000	$ 30,000	$ 90,100
Total estimated patronage distributed in equity	662,700
nonqualified patronage, estimated	153,900
Total patronage	286,600	244,800	564,500
Total patronage distributed in equity	$ 235,600	$ 214,800	$ 474,400