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DEBT - Redemption of $550 million of Senior Subordinated Notes due 2027 (Details) - USD ($) $ in Millions		12 Months Ended
	Apr. 22, 2024	Sep. 30, 2024	Sep. 30, 2023
Senior Subordinated Notes $550M due 2027 7.50%
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	$ 550
Senior Subordinated Notes | Senior Subordinated Notes $550M due 2027 7.50%
Debt Instrument [Line Items]
Interest rate			7.50%
Debt Instrument, Redemption Price, Percentage	100.00%
Write-off of debt issuance costs		$ 2

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