DERIVATIVE INSTRUMENTS - VOLUME (Details) - Bcf	3 Months Ended	12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022
Natural Gas Distribution | Long | Futures
Derivative [Line Items]
Notional amount	23.1	30.5
Natural Gas Distribution | Long | Physical Commodity
Derivative [Line Items]
Notional amount	1.8	6.8
Energy Services | Long | Physical Commodity
Derivative [Line Items]
Notional amount	(5.2)	2.7
Energy Services | Short | Futures
Derivative [Line Items]
Notional amount	(10.7)	(0.7)