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DEBT - Interest Rate Swap Agreements (Details) - USD ($) $ in Millions | 12 Months Ended |
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Sep. 30, 2024 | Sep. 30, 2023
Interest Rate Swap, Instrument 1 |  |
Derivative [Line Items] |  |
Notional amount | $ 150.0 |
Fixed rate (percentage) | 3.37% |
Interest Rate Swap, Instrument 2 |  |
Derivative [Line Items] |  |
Notional amount | $ 50.0 |
Fixed rate (percentage) | 3.34% |
Interest Rate Swap, Instrument 3 |  |
Derivative [Line Items] |  |
Notional amount | $ 100.0 |
Fixed rate (percentage) | 4.74% |
Interest Rate Swap, Instrument 4 |  |
Derivative [Line Items] |  |
Notional amount | $ 150.0 |
Fixed rate (percentage) | 4.25% |
Designated as Hedging Instruments | Interest rate swap agreements |  |
Derivative [Line Items] |  |
Cash payment from terminated interest rate swap agreement | $ 11.0 |
Notional amount | $ 450.0 | $ 600.0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-1A + Details
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- Definition The cash inflow provided by derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 45 -Paragraph 12 -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
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