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COMMITMENTS AND CONTINGENCIES - Schedule of Expected Payments for Environmental Remediation (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Sep. 30, 2023
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Accrual for Environmental Loss Contingencies, Fiscal Year Maturity [Abstract] |  |
2025 | $ 0.8 |
2026 | 2.4 |
2027 | 0.3 |
2028 | 0.2 |
2029 | 0.2 |
Thereafter | 1.6 |
Total payments | 5.5 |
Amount representing interest | (1.0) |
Total environmental obligation | $ 4.5 | $ 5.4

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