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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 6 Months Ended
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Mar. 31, 2018
Accounting Policies [Abstract] |
Summary of Gas in Storage | The following table summarizes gas in storage, at average cost by segment as of:
| March 31, 2018 | September 30, 2017
($ in thousands) | Gas in Storage |  | Bcf | Gas in Storage |  | Bcf
Energy Services |  | $ | 51,915 |  | 18.6 |  |  | $ | 122,884 |  | 53.9 |
Natural Gas Distribution |  | 19,254 |  | 4.7 |  |  | 79,179 |  | 21.8 |
Total |  | $ | 71,169 |  | 23.3 |  |  | $ | 202,063 |  | 75.7 |
Accounts Receivable by Subsidiary | Customer accounts receivable include outstanding billings from the following subsidiaries as of:
(Thousands) | March 31, 2018 |  | September 30, 2017
Energy Services | $ | 179,218 |  | 60 | % |  | $ | 150,322 |  | 77 | %
Natural Gas Distribution (1) | 112,884 |  | 38 |  |  | 37,432 |  | 19 |
Clean Energy Ventures | 2,834 |  | 1 |  |  | 2,655 |  | 1 |
NJRHS and other | 3,888 |  | 1 |  |  | 6,058 |  | 3 |
Total | $ | 298,824 |  | 100 | % |  | $ | 196,467 |  | 100 | %
(1) | Does not include unbilled revenues of $55.4 million and $7.2 million as of March 31, 2018 and September 30, 2017, respectively.
Disposal Groups, Including Discontinued Operations | The major classes of assets and liabilities included within the disposal group as held for sale are as follows:
(Thousands) | March 31, 2018 |
Assets held for sale: |  |
Property, plant and equipment - wind equipment, at cost |  | $ | 244,972 |
Property, plant and equipment - accumulated depreciation, wind equipment |  | (21,561 | )
Prepaid and accrued taxes |  | 1,226 |
Other noncurrent assets |  | 261 |
|  | $ | 224,898 |
Liabilities held for sale: |  |
Asset retirement obligation |  | $ | 4,262 |

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