Notes Payable and Long-Term Debt - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Aug. 31, 2022	Aug. 31, 2021
Short-term Debt [Line Items]
Notes payable	$ 606,719	$ 1,740,859
Notes Payable, Other Payables [Member]
Short-term Debt [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	4.41%	1.18%
CHS Capital notes payable
Short-term Debt [Line Items]
Short-term Debt, Weighted Average Interest Rate, at Point in Time	1.34%	1.00%
CHS Capital notes payable | CHS Capital notes payable
Short-term Debt [Line Items]
Notes payable	$ 147,321	$ 876,712
Notes Payable, Other Payables [Member] | Recourse loan commitments
Short-term Debt [Line Items]
Notes payable	0
Short-term bank loans and notes payable current borrowing capacity	100,000
Notes Payable, Other Payables [Member] | Short-Term Notes Payable, Surplus Funds Program [Member]
Short-term Debt [Line Items]
Notes payable	147,300
Revolving credit facility | Notes Payable, Other Payables [Member] | Notes Payable, Other Payables [Member]
Short-term Debt [Line Items]
Notes payable	$ 459,398	$ 864,147