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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

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