Receivables - Schedule of Receivables (Details) - USD ($) $ in Thousands	Feb. 28, 2021	Aug. 31, 2020
Receivables [Abstract]
Trade accounts receivable	$ 1,650,031	$ 1,476,585
CHS Capital short-term notes receivable	442,172	563,934
Other	392,769	491,068
Receivables, gross	2,484,972	2,531,587
Less: allowances and reserves	148,052	165,540
Total receivables	$ 2,336,920	$ 2,366,047