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DERIVATIVE INSTRUMENTS - OFFSETTING OF ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Sep. 30, 2018
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Energy Services |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets | [1] | $ 42,522 |  | $ 37,396
Offsetting Derivative Instruments | [2] | (31,103) |  | (22,719)
Financial Collateral Received/Pledged | [3] | (814) |  | (200)
Net Amounts | [4] | 10,605 |  | 14,477
Derivative liabilities: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 65,519 |  | 69,442
Offsetting Derivative Instruments | [2] | (31,103) |  | (22,719)
Financial Collateral Received/Pledged | [3] | (654) |  | (20,949)
Net Amounts | [4] | 33,762 |  | 25,774
Energy Services | Physical commodity contracts |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 11,000 |  | 11,597
Offsetting Derivative Instruments | [2] | (4,187) |  | (3,944)
Financial Collateral Received/Pledged | [3] | (200) |  | (200)
Net Amounts | [4] | 6,613 |  | 7,453
Derivative liabilities: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 37,056 |  | 29,474
Offsetting Derivative Instruments | [2] | (4,187) |  | (3,944)
Financial Collateral Received/Pledged | [3] | 0 |  | 0
Net Amounts | [4] | 32,869 |  | 25,530
Energy Services | Financial commodity contracts |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 31,512 |  | 25,799
Offsetting Derivative Instruments | [2] | (26,906) |  | (18,775)
Financial Collateral Received/Pledged | [3] | (614) |  | 0
Net Amounts | [4] | 3,992 |  | 7,024
Derivative liabilities: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 28,199 |  | 39,724
Offsetting Derivative Instruments | [2] | (26,906) |  | (18,775)
Financial Collateral Received/Pledged | [3] | (654) |  | (20,949)
Net Amounts | [4] | 639 |  | 0
Energy Services | Foreign currency contracts |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets |  | 10 |  |
Offsetting Derivative Instruments |  | (10) |  |
Financial Collateral Received/Pledged |  | 0 |  |
Net Amounts |  | 0 |  |
Derivative liabilities: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 264 |  | 244
Offsetting Derivative Instruments | [2] | (10) |  | 0
Financial Collateral Received/Pledged | [3] | 0 |  | 0
Net Amounts | [4] | 254 |  | 244
Natural Gas Distribution |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets |  | 271 | [1] | 179
Offsetting Derivative Instruments |  | (19) | [2] | (3)
Financial Collateral Received/Pledged |  | 0 | [3] | (94)
Net Amounts |  | 252 | [4] | 82
Derivative liabilities: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 81 |  | 192
Offsetting Derivative Instruments | [2] | (19) |  | (3)
Financial Collateral Received/Pledged | [3] | 0 |  | 0
Net Amounts | [4] | 62 |  | 189
Natural Gas Distribution | Physical commodity contracts |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets |  | 55 | [1] | 85
Offsetting Derivative Instruments |  | 0 | [2] | (3)
Financial Collateral Received/Pledged |  | 0 | [3] | 0
Net Amounts |  | 55 | [4] | 82
Derivative liabilities: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 62 |  | 192
Offsetting Derivative Instruments | [2] | 0 |  | (3)
Financial Collateral Received/Pledged | [3] | 0 |  | 0
Net Amounts | [4] | 62 |  | 189
Natural Gas Distribution | Financial commodity contracts |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets |  | 216 | [1] | 94
Offsetting Derivative Instruments |  | (19) | [2] | 0
Financial Collateral Received/Pledged |  | 0 | [3] | (94)
Net Amounts |  | 197 | [4] | 0
Derivative liabilities: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 19 |  |
Offsetting Derivative Instruments | [2] | (19) |  |
Financial Collateral Received/Pledged | [3] | 0 |  |
Net Amounts | [4] | 0 |  |
Home Services and Other |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 20 |  | 381
Offsetting Derivative Instruments | [2] | 0 |  | 0
Financial Collateral Received/Pledged | [3] | 0 |  | 0
Net Amounts | [4] | 20 |  | 381
Home Services and Other | Interest rate contracts |  |  |  |
Derivative assets: |  |  |  |
Amounts Presented in Balance Sheets | [1] | 20 |  | 381
Offsetting Derivative Instruments | [2] | 0 |  | 0
Financial Collateral Received/Pledged | [3] | 0 |  | 0
Net Amounts | [4] | $ 20 |  | $ 381
[1] | Derivative assets and liabilities are presented on a gross basis on the balance sheet as the Company does not elect balance sheet offsetting under ASC 210-20.
[2] | Includes transactions with NAESB netting election, transactions held by FCMs with net margining and transactions with ISDA netting.
[3] | Financial collateral includes cash balances at FCMs as well as cash received from or pledged to other counterparties.
[4] | Net amounts represent presentation of derivative assets and liabilities if the Company were to elect balance sheet offsetting under ASC 210-20.

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