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DERIVATIVE INSTRUMENTS - BALANCE SHEET RELATED DISCLOSURES (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Sep. 30, 2019
--- | --- | ---
Fair Value |  |
Derivative assets, current | $ 35,428 | $ 25,103
Derivative liabilities, current | 51,686 | 57,623
Derivative assets, noncurrent | 8,654 | 7,426
Derivative liabilities, noncurrent | 12,028 | 18,821
Not Designated as Hedging Instrument |  |
Fair Value |  |
Derivative assets | 44,082 | 32,529
Derivative liabilities | 63,714 | 76,444
Home Services and Other | Designated as Hedging Instrument [Member] | Interest rate contracts |  |
Fair Value |  |
Derivative assets, current | 0 | 0
Derivative liabilities, current | 12,492 | 0
Natural Gas Distribution | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 131 | 67
Derivative liabilities, current | 175 | 245
Natural Gas Distribution | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 0 | 382
Derivative liabilities, current | 24 | 570
Natural Gas Distribution | Not Designated as Hedging Instrument | Interest rate contracts |  |
Fair Value |  |
Derivative assets, current | 0 | 0
Derivative liabilities, current | 6,692 | 0
Energy Services | Not Designated as Hedging Instrument | Physical commodity contracts |  |
Fair Value |  |
Derivative assets, current | 7,712 | 6,847
Derivative liabilities, current | 16,239 | 27,540
Derivative assets, noncurrent | 3,366 | 1,710
Derivative liabilities, noncurrent | 10,568 | 12,641
Energy Services | Not Designated as Hedging Instrument | Financial commodity contracts |  |
Fair Value |  |
Derivative assets, current | 27,585 | 17,806
Derivative liabilities, current | 15,641 | 29,057
Derivative assets, noncurrent | 5,288 | 5,716
Derivative liabilities, noncurrent | 1,391 | 6,105
Energy Services | Not Designated as Hedging Instrument | Foreign currency contracts |  |
Fair Value |  |
Derivative assets, current | 0 | 1
Derivative liabilities, current | 423 | 211
Derivative assets, noncurrent | 0 | 0
Derivative liabilities, noncurrent | $ 69 | $ 75

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