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DEBT - Interest Rate Swap Agreements (Details) - USD ($) $ in Millions | Sep. 30, 2022 | Sep. 30, 2021
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Interest Rate Swap, Instrument 3 |  |
Derivative [Line Items] |  |
Notional amount | $ 100.0 |
Fixed rate (percentage) | 1.36% |
Interest Rate Swap, Instrument 4 |  |
Derivative [Line Items] |  |
Notional amount | $ 300.0 |
Fixed rate (percentage) | 1.34% |
Interest Rate Swap, Instrument 5 |  |
Derivative [Line Items] |  |
Notional amount | $ 200.0 |
Fixed rate (percentage) | 1.37% |
Interest Rate Swap, Instrument 6 |  |
Derivative [Line Items] |  |
Notional amount | $ 200.0 |
Fixed rate (percentage) | 0.58% |
Interest Rate Swap, Instrument 7 |  |
Derivative [Line Items] |  |
Notional amount | $ 200.0 |
Fixed rate (percentage) | 0.85% |
Designated as Hedging Instruments | Interest rate swap agreements |  |
Derivative [Line Items] |  |
Notional amount | $ 800.0 | $ 600.0

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