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REPORTING SEGMENT AND OTHER OPERATIONS DATA - NET FINANCIAL EARNINGS (LOSS) RECONCILIATION (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting [Abstract] |  |
Net financial earnings (loss) | $ 65,770 | $ 44,657
Less: |  |
Unrealized (gain) on derivative instruments and related transactions | (82,191) | (37,491)
Tax effect | 19,536 | 8,913
Effects of economic hedging related to natural gas inventory | 23,577 | (7,532)
Tax effect | (5,603) | 1,790
NFE tax adjustment | (861) | (2,068)
NET INCOME | $ 111,312 | $ 81,045

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