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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Outstanding Commodity Contracts that Hedge Forecasted Purchases (Details)
12 Months Ended
Sep. 30, 2023
T
gal
Sep. 30, 2022
T
gal
Urea    
Derivative [Line Items]    
Outstanding commodity contracts, mass | T 52,500 54,000
Diesel    
Derivative [Line Items]    
Outstanding commodity contracts, volume 1,974,000 3,150,000
Heating Oil    
Derivative [Line Items]    
Outstanding commodity contracts, volume 966,000 1,218,000