Investments Equity Method investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2023	Feb. 28, 2022	Feb. 28, 2023	Feb. 28, 2022	Aug. 31, 2022
Schedule of Equity Method Investments [Line Items]
Other Investments	$ 135,315		$ 135,315		$ 126,730
Net income (loss) attributable to CHS Inc.	292,321	$ 219,000	1,074,919	$ 670,961
Gross Profit	384,267	268,998	1,263,402	788,906
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	292,048	$ 218,896	1,074,964	670,839
CF Nitrogen LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	2,629,429		2,629,429		2,641,604
Ventura Foods, LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	439,617		439,617		410,093
Ardent Mills LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	258,068		258,068		250,857
TEMCO, LLC
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	52,454		52,454		32,809
Other Equity Method Investments [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 275,772		275,772		$ 265,913
CF Nitrogen LLC [Member]
Schedule of Equity Method Investments [Line Items]
Net income (loss) attributable to CHS Inc.			242,580	292,592
Revenues			3,124,839	3,018,167
Gross Profit			1,435,598	1,547,086
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest			$ 1,428,713	$ 1,522,292