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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables) | 12 Months Ended
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Sep. 30, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of Outstanding Commodity Contracts that Hedge Forecasted Purchases | The Company had the following outstanding commodity contracts that were entered into to hedge forecasted purchases:
| September 30,
| 2024 |  | 2023
Commodity |  |  |
Urea | 51,000 tons |  | 52,500 tons
Diesel | 1,092,000 gallons |  | 1,974,000 gallons
Heating Oil | 42,000 gallons |  | 966,000 gallons
Summary of Fair Values of the Company's Derivative Instruments | The fair values of the Company’s derivative instruments, which represent Level 2 fair value measurements, were as follows:
|  |  |  | Assets / (Liabilities)
|  |  |  | 2024 |  | 2023
Derivatives Designated as Hedging Instruments |  | Balance Sheet Location |  | Fair Value
Interest rate swap agreements |  | Prepaid and other current assets |  | $ | 0.9 |  |  | $ | 16.7 |
|  | Other assets |  | — |  |  | 14.7 |
|  | Other current liabilities |  | (0.2) |  |  | — |
|  | Other liabilities |  | (5.1) |  |  | — |
Commodity hedging instruments |  | Prepaid and other current assets |  | 0.8 |  |  | 2.3 |
Total derivatives designated as hedging instruments |  | $ | (3.6) |  |  | $ | 33.7 |
Derivatives Not Designated as Hedging Instruments |  | Balance Sheet Location |  |  |  |
Currency forward contracts |  | Prepaid and other current assets |  | $ | 0.1 |  |  | $ | 5.6 |
|  | Other current liabilities |  | (4.0) |  |  | — |
Commodity hedging instruments |  | Prepaid and other current assets |  | — |  |  | 0.9 |
Total derivatives not designated as hedging instruments |  | (3.9) |  |  | 6.5 |
Total derivatives |  | $ | (7.5) |  |  | $ | 40.2 |
Schedule of the Effect of Derivative Instruments on AOCI and Operations | The effect of derivative instruments on AOCL, net of tax, and the Consolidated Statements of Operations for the years ended September 30 was as follows:
|  | Amount of Gain / (Loss) Recognized in AOCL
Derivatives in Cash Flow Hedging Relationships |  | 2024 |  | 2023
Interest rate swap agreements |  | $ | (7.1) |  |  | $ | 11.3 |
Commodity hedging instruments |  | (0.8) |  |  | (7.1) |
Total |  | $ | (7.9) |  |  | $ | 4.2 |
|  | Reclassified from AOCL into |  | Amount of Gain / (Loss)
Derivatives in Cash Flow Hedging Relationships |  | Statement of Operations |  | 2024 |  | 2023
Interest rate swap agreements |  | Interest expense |  | $ | 11.7 |  |  | $ | 11.5 |
Commodity hedging instruments |  | Cost of sales |  | (4.4) |  |  | 5.9 |
Total |  | $ | 7.3 |  |  | $ | 17.4 |
|  | Recognized in |  | Amount of Gain / (Loss)
Derivatives Not Designated as Hedging Instruments |  | Statement of Operations |  | 2024 |  | 2023
Currency forward contracts |  | Other income / expense, net |  | $ | (9.6) |  |  | $ | (14.7) |
Commodity hedging instruments |  | Cost of sales |  | (2.0) |  |  | 1.2 |
Total |  | $ | (11.6) |  |  | $ | (13.5) |

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