Document and Entity Information (USD $)	9 Months Ended
	May 31, 2013	Jul. 10, 2013
DEI [Abstract]
Entity Registrant Name	CHS Inc.
Entity Central Index Key	0000823277
Current Fiscal Year End Date	--08-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	May 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		0
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float