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Receivables - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Nov. 30, 2021
Aug. 31, 2021
Notes Receivable, Long-Term    
CHS Capital long-term notes receivable additional available credit of counterparty $ 740.0  
CHS Capital Notes Receivable [Member]    
Notes Receivable, Long-Term    
CHS Capital long-term notes receivable, non-current, term 10 years  
CHS Capital long-term notes receivable $ 66.1 $ 55.4
Commercial Notes to Notes and Loans Receivable, Net, Percentage 43.00% 28.00%
Producer Notes to Notes and Loans Receivable, Net, Percentage 57.00% 72.00%