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Derivative Financial Instruments (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 31, 2024 USD ($) bu gal | Jul. 31, 2023 USD ($) | Jul. 31, 2024 USD ($) bu gal | Jul. 31, 2023 USD ($) | Jan. 31, 2024 USD ($) bu gal
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Prepaid Expense and Other Assets | $ | $ 300,000 |  | $ 300,000 |  | $ 2,200,000
Assets [Member] | Corn [Member] |  |  |  |  |
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Forward Purchase Contracts Quantity | bu | 900,000 |  | 900,000 |  | 9,300,000
Liabilities, Total [Member] |  |  |  |  |
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Forward Purchase Contracts Quantity | bu | 14,100,000 |  | 14,100,000 |  | 8,200,000
Liabilities, Total [Member] | Corn [Member] | Short [Member] |  |  |  |  |
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Commodity Futures Quantity | bu | 2,000,000 |  | 2,000,000 |  | 255,000
Liabilities, Total [Member] | Corn [Member] | Long [Member] |  |  |  |  |
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Commodity Futures Quantity | bu | 2,100,000 |  | 2,100,000 |  | 6,900,000
Liabilities, Total [Member] | Ethanol [Member] | Short [Member] |  |  |  |  |
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Commodity Futures Quantity | gal | 1.5 |  | 1.5 |  | 210,000
Corn [Member] |  |  |  |  |
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | $ | $ 6.2 | $ 800,000 |  |  |
Derivative, Gain (Loss) on Derivative, Net | $ |  |  | $ (6.1) | $ 5,000,000 |
Ethanol [Member] |  |  |  |  |
Derivative Financial Instruments (Details) [Line Items] |  |  |  |  |
Gain (Loss) on Sale of Derivatives | $ | $ 400,000 |  | $ 400,000 |  |

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