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Notes Payable and Long-Term Debt - Footnote Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Nov. 30, 2016 | Aug. 31, 2016
Debt Instrument [Line Items] |  |
Notes payable | $ 3,227,564 | $ 2,731,479
Notes payable |  |
Debt Instrument [Line Items] |  |
Notes payable | 2,315,412 | 1,803,174
CHS Capital notes payable |  |
Debt Instrument [Line Items] |  |
Notes payable | 912,152 | $ 928,305
Five-Year Revolving Facilities [Member] | Line of Credit [Member] | Revolving credit facility |  |
Debt Instrument [Line Items] |  |
Line of Credit Facility, Current Borrowing Capacity | $ 3,000,000 |
Debt Instrument, Term | 5 years |

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