Notes Payable and Long-Term Debt - Schedule of Weighted Average Interest Rates (Details)	Aug. 31, 2012	Aug. 31, 2011
Debt Instrument [Line Items]
Long-term debt, weighted average interest rate		5.25%
Notes payable, other payables
Debt Instrument [Line Items]
Notes payable, weighted average interest rate	2.58%	2.37%
CHS Capital notes payable
Debt Instrument [Line Items]
Notes payable, weighted average interest rate	1.68%	1.86%

Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of short-term debt outstanding by type or by instrument at that time.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph b

-Article 5

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant