COMMITMENTS AND CONTINGENCIES - Schedule of Expected Payments for Environmental Remediation (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2022
Accrual for Environmental Loss Contingencies, Fiscal Year Maturity [Abstract]
2024	$ 1.6
2025	2.4
2026	0.4
2027	0.3
2028	0.3
Thereafter	1.6
Total payments	6.6
Amount representing interest	(1.2)
Total environmental obligation	$ 5.4	$ 8.8

Total costs accrued as of the balance sheet date for environmental loss contingencies.

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Undiscounted amount of the accrual for environmental loss contingencies.

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