REPORTING SEGMENT AND OTHER OPERATIONS DATA - NET FINANCIAL EARNINGS (LOSS) RECONCILIATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting [Abstract]
Net financial earnings (loss)	$ 110,284	$ 65,770
Less:
Unrealized (gain) on derivative instruments and related transactions	(31,503)	(82,191)
Tax effect	7,487	19,536
Effects of economic hedging related to natural gas inventory	23,972	23,577
Tax effect	(5,697)	(5,603)
NFE tax adjustment	104	(861)
NET INCOME	$ 115,921	$ 111,312