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DERIVATIVES AND HEDGING ACTIVITIES - Interest Rate Swap Contracts Reflected in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023
Interest Rate Swaps | Cash Flow Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Total derivatives (1) | $ (2,606) | $ 4,006
Cross-Currency Swaps |  |
Derivatives, Fair Value [Line Items] |  |
Advance payments received from counterparties | 58,432 |
Cross-Currency Swaps | Net Investment Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Total derivatives (1) | (66,967) | (2,766)
Other current assets | Interest Rate Swaps | Cash Flow Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Assets derivatives | 0 | 920
Other current assets | Cross-Currency Swaps | Net Investment Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Assets derivatives | 0 | 0
Other assets | Interest Rate Swaps | Cash Flow Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Assets derivatives | 0 | 3,086
Other assets | Cross-Currency Swaps | Net Investment Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Assets derivatives | 0 | 0
Other liabilities | Interest Rate Swaps | Cash Flow Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (1,743) | 0
Other liabilities | Cross-Currency Swaps | Net Investment Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (48,925) | (2,766)
Other current liabilities | Interest Rate Swaps | Cash Flow Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | (863) | 0
Other current liabilities | Cross-Currency Swaps | Net Investment Hedging | Designated as Hedging Instrument |  |
Derivatives, Fair Value [Line Items] |  |
Liability derivatives | $ (18,042) | $ 0

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