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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Fair Values of the Company's Derivative Instruments (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Sep. 30, 2021
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Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Total derivatives instruments | $ 37.2 | $ 13.5
Designated as Hedging Instruments | Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Total derivatives instruments | 33.4 | 9.0
Designated as Hedging Instruments | Interest rate swap agreements | Other assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset | 18.2 | 3.3
Designated as Hedging Instruments | Interest rate swap agreements | Prepaid and other current assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset | 12.8 | 0.0
Designated as Hedging Instruments | Interest rate swap agreements | Other current liabilities | Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liability | 0.0 | (5.7)
Designated as Hedging Instruments | Interest rate swap agreements | Other liabilities | Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liability | 0.0 | (2.5)
Designated as Hedging Instruments | Commodity hedging instruments | Prepaid and other current assets | Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset | 2.4 | 13.9
Derivatives not designated as Hedging Instruments | Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Total derivatives instruments | 3.8 | 4.5
Derivatives not designated as Hedging Instruments | Commodity hedging instruments | Prepaid and other current assets |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset | 0.4 | 1.3
Derivatives not designated as Hedging Instruments | Currency forward contracts | Prepaid and other current assets | Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Derivative asset | 3.4 | 3.4
Derivatives not designated as Hedging Instruments | Currency forward contracts | Other current liabilities | Fair value, inputs, level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Derivative liability | $ 0.0 | $ (0.2)

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