v3.26.3
Cover - USD ($)
12 Months Ended
Aug. 31, 2026
Nov. 04, 2026
Feb. 28, 2026
Entity Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Aug. 31, 2026    
Current Fiscal Year End Date --08-31    
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, Address Line One 5500 Cenex Drive    
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    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   0  
Documents Incorporated by Reference
DOCUMENTS INCORPORATED BY REFERENCE
None.
   
Entity Central Index Key 0000823277    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus FY    
Amendment Flag false    
8% Cumulative Redeemable Preferred Stock      
Entity Information [Line Items]      
Title of 12(b) Security 8% Cumulative Redeemable Preferred Stock    
Trading Symbol CHSCP    
Security Exchange Name NASDAQ    
Class B Cumulative Redeemable Preferred Stock, Series 1      
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 Reset Rate Cumulative Redeemable Preferred Stock, Series 2      
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 Reset Rate Cumulative Redeemable Preferred Stock, Series 3      
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 Cumulative Redeemable Preferred Stock, Series 4      
Entity Information [Line Items]      
Title of 12(b) Security Class B Cumulative Redeemable Preferred Stock, Series 4    
Trading Symbol CHSCL    
Security Exchange Name NASDAQ