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DERIVATIVE INSTRUMENTS - BALANCE SHEET RELATED DISCLOSURES (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Sep. 30, 2021
--- | --- | ---
Fair Value |  |
Derivative assets, current | $ 39,783 | $ 35,251
Derivative liabilities, current | 30,049 | 87,145
Derivative assets, noncurrent | 1,978 | 3,403
Derivative liabilities, noncurrent | 15,261 | 13,497
Not Designated as Hedging Instrument |  |
Fair Value |  |
Derivative assets | 41,761 | 38,654
Derivative liabilities | 45,310 | 100,642
Natural Gas Distribution | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 234 | 36
Derivative liabilities, current | 4 | 16
Natural Gas Distribution | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 5,032 | 2,046
Derivative liabilities, current | 240 | 13
Energy Services | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 2,285 | 2,818
Derivative liabilities, current | 18,592 | 24,592
Derivative assets, noncurrent | 135 | 333
Derivative liabilities, noncurrent | 15,261 | 13,237
Energy Services | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 32,164 | 30,226
Derivative liabilities, current | 11,209 | 62,521
Derivative assets, noncurrent | 1,843 | 3,068
Derivative liabilities, noncurrent | 0 | 260
Energy Services | Not Designated as Hedging Instrument | Foreign currency contracts |  |
Fair Value |  |
Derivative assets, current | 68 | 125
Derivative liabilities, current | 4 | 3
Derivative assets, noncurrent | 0 | 2
Derivative liabilities, noncurrent | $ 0 | $ 0

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