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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Outstanding Commodity Contracts that Hedge Forecasted Purchases (Details) | 12 Months Ended
--- | ---
Sep. 30, 2022 T gal | Sep. 30, 2021 T gal
Urea |  |
Derivative [Line Items] |  |
Outstanding commodity contracts, mass | T | 54,000 | 94,500
Diesel |  |
Derivative [Line Items] |  |
Outstanding commodity contracts, volume | 3,150,000 | 5,880,000
Heating Oil |  |
Derivative [Line Items] |  |
Outstanding commodity contracts, volume | 1,218,000 | 2,268,000

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