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STOCK-BASED COMPENSATION - Narrative (Details)	9 Months Ended
	Jun. 30, 2023 tranche component
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period	3 years
Number of components included in award units | component	2
First Component of Performance Share Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance cycle period of each tranche	3 years
Second Component of Performance Share Unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance cycle period of each tranche	1 year
Number of tranches in component | tranche	3
Period over which awards expire	3 years

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