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DERIVATIVE INSTRUMENTS - BALANCE SHEET RELATED DISCLOSURES (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Sep. 30, 2021
--- | --- | ---
Fair Value |  |
Derivative assets, current | $ 21,586 | $ 35,251
Derivative liabilities, current | 45,216 | 87,145
Derivative assets, noncurrent | 4,140 | 3,403
Derivative liabilities, noncurrent | 19,632 | 13,497
Not Designated as Hedging Instrument |  |
Fair Value |  |
Derivative assets | 25,726 | 38,654
Derivative liabilities | 64,848 | 100,642
Natural Gas Distribution | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 101 | 36
Derivative liabilities, current | 16 | 16
Natural Gas Distribution | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 111 | 2,046
Derivative liabilities, current | 1,887 | 13
Energy Services | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 1,853 | 2,818
Derivative liabilities, current | 21,594 | 24,592
Derivative assets, noncurrent | 131 | 333
Derivative liabilities, noncurrent | 19,632 | 13,237
Energy Services | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 19,483 | 30,226
Derivative liabilities, current | 21,701 | 62,521
Derivative assets, noncurrent | 4,009 | 3,068
Derivative liabilities, noncurrent | 0 | 260
Energy Services | Not Designated as Hedging Instrument | Foreign currency contracts |  |
Fair Value |  |
Derivative assets, current | 38 | 125
Derivative liabilities, current | 18 | 3
Derivative assets, noncurrent | 0 | 2
Derivative liabilities, noncurrent | $ 0 | $ 0

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