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Derivative Financial Instruments and Hedging Activities - Purchase and Sale Contracts (Details) - Not Designated as Hedging Instrument t in Thousands, T in Thousands, MMBtu in Thousands, Bushels in Thousands, Barrels in Thousands | May 31, 2023 T MMBtu t Barrels Bushels | Aug. 31, 2022 Bushels MMBtu Barrels T t
--- | --- | ---
Grain and oilseed (bushels) | Long [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | Bushels | 418,318 | 609,300
Grain and oilseed (bushels) | Short [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | Bushels | 559,715 | 773,239
Energy products (barrels) | Long [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | Barrels | 15,119 | 10,541
Energy products (barrels) | Short [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | Barrels | 9,157 | 5,706
Processed grain and oilseed (tons) | Long [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 5,672 | 1,191
Processed grain and oilseed (tons) | Short [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 11,324 | 4,182
Crop nutrients (tons) | Long [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 76 | 23
Crop nutrients (tons) | Short [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | 15 | 22
Ocean Freight Contracts [Member] | Long [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | t | 60 | 60
Ocean Freight Contracts [Member] | Short [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | t | 0 | 0
Natural gas (metric million Btu) | Long [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | MMBtu | 940 | 420
Natural gas (metric million Btu) | Short [Member] |  |
Derivative [Line Items] |  |
Derivative, Nonmonetary Notional Amount | MMBtu | 0 | 0

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