Receivables - Schedule of Receivables (Details) - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Receivables [Abstract]
Trade accounts receivable	$ 2,047,198	$ 1,476,585
CHS Capital short-term notes receivable	505,778	563,934
Other	451,630	491,068
Receivables, gross	3,004,606	2,531,587
Less allowances and reserves	143,722	165,540
Total receivables	$ 2,860,884	$ 2,366,047