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COMMITMENTS AND CONTINGENT LIABILITIES - SCHEDULE OF FUTURE COMMITTED EXPENSES (Details) $ in Thousands | 12 Months Ended
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Sep. 30, 2022 USD ($)
Long-term Purchase Commitment [Line Items] |
Current charges recoverable through BGSS | $ 196,600
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 504,860
2023 | 215,578
2024 | 195,054
2025 | 173,663
2026 | 158,978
Thereafter | 1,084,260
Operating leases, future minimum payments due, next five years (not more than) | 8,000
Thereafter | 190,972
Energy Services |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 277,546
2023 | 59,428
2024 | 38,735
2025 | 35,673
2026 | 25,269
Thereafter | 21,543
Energy Services | Natural gas purchases |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 199,629
2023 | 2,355
2024 | 0
2025 | 0
2026 | 0
Thereafter | 0
Energy Services | Storage demand fees |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 21,160
2023 | 12,607
2024 | 6,450
2025 | 3,797
2026 | 2,208
Thereafter | 819
Energy Services | Pipeline demand fees |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 56,757
2023 | 44,466
2024 | 32,285
2025 | 31,876
2026 | 23,061
Thereafter | 20,724
Annual pipeline obligation to be paid over 10 year period | 4,000
Natural Gas Distribution |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 227,314
2023 | 156,150
2024 | 156,319
2025 | 137,990
2026 | 133,709
Thereafter | 1,062,717
Natural Gas Distribution | Natural gas purchases |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 30,730
2023 | 0
2024 | 0
2025 | 0
2026 | 0
Thereafter | 0
Natural Gas Distribution | Storage demand fees |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 47,513
2023 | 35,345
2024 | 17,370
2025 | 10,268
2026 | 9,546
Thereafter | 4,775
Natural Gas Distribution | Pipeline demand fees |
Purchase Obligation, Fiscal Year Maturity [Abstract] |
2022 | 149,071
2023 | 120,805
2024 | 138,949
2025 | 127,722
2026 | 124,163
Thereafter | $ 1,057,942
Minimum |
Long-term Purchase Commitment [Line Items] |
Storage and pipeline capacity, contract term | 1 year
Minimum | Energy Services |
Long-term Purchase Commitment [Line Items] |
Storage and pipeline capacity, contract term | 1 year
Maximum |
Long-term Purchase Commitment [Line Items] |
Storage and pipeline capacity, contract term | 10 years
Maximum | Energy Services |
Long-term Purchase Commitment [Line Items] |
Storage and pipeline capacity, contract term | 10 years

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