DEBT - CLEAN ENERGY VENTURES (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Debt Instrument [Line Items]
Proceeds from sale leaseback transactions - solar	$ 167,790	$ 24,071	$ 17,673
CEV
Debt Instrument [Line Items]
Proceeds from sale leaseback transactions - solar	$ 167,800	$ 24,100
CEV | Minimum
Debt Instrument [Line Items]
Sale leaseback transaction lease term	5 years
CEV | Maximum
Debt Instrument [Line Items]
Sale leaseback transaction lease term	15 years