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DERIVATIVE INSTRUMENTS - BALANCE SHEET RELATED DISCLOSURES (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Fair Value |  |
Derivative assets, current | $ 17,504 | $ 23,310
Derivative liabilities, current | 39,572 | 33,865
Derivative assets, noncurrent | 3,070 | 3,349
Derivative liabilities, noncurrent | 19,130 | 13,352
Not Designated as Hedging Instrument |  |
Fair Value |  |
Derivative assets | 20,574 | 26,659
Derivative liabilities | 58,702 | 47,217
Natural Gas Distribution | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 87 | 78
Derivative liabilities, current | 2 | 76
Natural Gas Distribution | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 6 | 71
Derivative liabilities, current | 2,027 | 282
Energy Services | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 3,240 | 6,454
Derivative liabilities, current | 17,070 | 20,438
Derivative assets, noncurrent | 1,493 | 1,264
Derivative liabilities, noncurrent | 18,550 | 12,003
Energy Services | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 13,931 | 16,671
Derivative liabilities, current | 20,408 | 12,965
Derivative assets, noncurrent | 1,559 | 2,037
Derivative liabilities, noncurrent | 566 | 1,346
Energy Services | Not Designated as Hedging Instrument | Foreign currency contracts |  |
Fair Value |  |
Derivative assets, current | 240 | 36
Derivative liabilities, current | 65 | 104
Derivative assets, noncurrent | 18 | 48
Derivative liabilities, noncurrent | $ 14 | $ 3

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