Cover Page - USD ($)	12 Months Ended
	Aug. 31, 2023	Nov. 08, 2023
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Aug. 31, 2023
Document Transition Report	false
Entity File Number	001-36079
Entity Registrant Name	CHS Inc.
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-0251095
Entity Address, City or Town	Inver Grove Heights
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55077
City Area Code	651
Local Phone Number	355-6000
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float	$ 0
Entity Common Stock, Shares Outstanding		0
Entity Central Index Key	0000823277
Current Fiscal Year End Date	--08-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Address, Address Line One	5500 Cenex Drive
Document Financial Statement Error Correction [Flag]	false
8% Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	8% Cumulative Redeemable Preferred Stock
Trading Symbol	CHSCP
Security Exchange Name	NASDAQ
Class B, Series 1 Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Class B Cumulative Redeemable Preferred Stock, Series 1
Trading Symbol	CHSCO
Security Exchange Name	NASDAQ
Class B, Series 2 Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Class B Reset Rate Cumulative Redeemable Preferred Stock, Series 2
Trading Symbol	CHSCN
Security Exchange Name	NASDAQ
Class B, Series 3 Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Class B Reset Rate Cumulative Redeemable Preferred Stock, Series 3
Trading Symbol	CHSCM
Security Exchange Name	NASDAQ
Class B, Series 4 Preferred Stock [Member]
Entity Information [Line Items]
Title of 12(b) Security	Class B Cumulative Redeemable Preferred Stock, Series 4
Trading Symbol	CHSCL
Security Exchange Name	NASDAQ