Document and Entity Information	9 Months Ended
	May 31, 2012	Jul. 12, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	CHS INC
Entity Central Index Key	0000823277
Document Type	10-Q
Document Period End Date	May 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--08-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		0