Equities Changes in Equity (Details) - USD ($) $ in Thousands	3 Months Ended
	Nov. 30, 2022	Nov. 30, 2021
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	$ 9,461,266	$ 9,017,326
Reversal of prior year patronage and redemption estimates	12,941	12,221
Redemptions of equities	(12,941)	(12,221)
Preferred stock dividends	(84,334)	(84,334)
Other, net	343	(518)
Net income (loss)	782,916	451,943
Net income (loss) attributable to CHS Inc.	782,598	451,961
Net income (loss) attributable to noncontrolling interests	318	(18)
Other comprehensive income, net of tax	(13,618)	(15,418)
Estimated 2022 cash patronage refunds	(208,864)	(39,691)
Estimated 2022 equity redemptions	(208,864)	(79,382)
Ending Balance	9,728,845	9,249,926
Capital equity certificates [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	3,587,131	3,583,911
Reversal of prior year patronage and redemption estimates	12,941	12,221
Redemptions of equities	(10,021)	(9,824)
Other, net	291	(1,023)
Estimated 2022 equity redemptions	(208,864)	(79,382)
Ending Balance	3,381,478	3,505,903
Nonpatronage Equity Certificates [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	27,933	28,431
Reversal of prior year patronage and redemption estimates	0	0
Redemptions of equities	(58)	(318)
Other, net		17
Ending Balance	27,875	28,130
Non-qualified Equity Certificates [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	1,776,172	1,634,896
Reversal of prior year patronage and redemption estimates	0	0
Redemptions of equities	(2,862)	(2,079)
Other, net	57	(64)
Ending Balance	1,773,367	1,632,753
Preferred Stock [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	2,264,038	2,264,038
Redemptions of equities	0	0
Ending Balance	2,264,038	2,264,038
Accumulated Other Comprehensive Income (Loss) [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	(255,335)	(216,391)
Other comprehensive income, net of tax	(13,618)	(15,418)
Ending Balance	(268,953)	(231,809)
Capital Reserves [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	2,055,682	1,713,976
Reversal of prior year patronage and redemption estimates	0	0
Preferred stock dividends	(84,334)	(84,334)
Other, net	20	1,393
Net income (loss) attributable to CHS Inc.	782,598	451,961
Estimated 2022 cash patronage refunds	(208,864)	(39,691)
Ending Balance	2,545,102	2,043,305
Noncontrolling Interest [Member]
Schedule of Capitalization, Equity [Line Items]
Beginning Balance	5,645	8,465
Other, net	(25)	(841)
Net income (loss) attributable to noncontrolling interests	318	(18)
Ending Balance	$ 5,938	$ 7,606