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Benefit Plans - Multiemployer Co-op Retirement Plan (Details) (Co-op Retirement Plan, Multiemployer Plans, Pension, Pension Plans, Defined Benefit, USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Aug. 31, 2013 | Aug. 31, 2012 | Aug. 31, 2011
Co-op Retirement Plan | Multiemployer Plans, Pension | Pension Plans, Defined Benefit |  |  |
Multiemployer Plans [Line Items] |  |  |
Co-op Retirement Plan - Contributions of CHS | $ 2,095 | $ 1,885 | $ 1,279

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- Definition Amount of contributions made to multiemployer plans by the employer. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450691-114947 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=14450570&loc=SL14450657-114947 + Details
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- Details
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