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REGULATION - REGULATORY ASSETS AND LIABILITIES (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-current | $ 73,070 | $ 73,587
Regulatory assets-noncurrent | 609,192 | 584,830
Regulatory liability-current | 32,981 | 32,287
Regulatory liabilities-noncurrent | 175,847 | 180,458
NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-current | 73,070 | 73,587
Regulatory assets-noncurrent | 604,097 | 579,599
Regulatory liability-current | 32,457 | 30,637
Regulatory liabilities-noncurrent | 175,847 | 180,458
Adelphia |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 5,095 | 5,231
Regulatory liability-current | 524 | 1,650
Derivatives at fair value, net | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory liabilities-noncurrent | 404 | 0
Overrecovered natural gas costs | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory liability-current | 32,457 | 30,637
Tax Act impact | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory liabilities-noncurrent | 175,328 | 180,347
Other noncurrent regulatory liabilities | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory liabilities-noncurrent | 115 | 111
New Jersey Clean Energy Program | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-current | 18,491 | 15,804
Conservation Incentive Program | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-current | 51,442 | 50,356
Derivatives at fair value, net | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-current | 1,363 | 6,017
Other current regulatory assets | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-current | 1,774 | 1,410
Regulatory assets-noncurrent | 59,924 | 51,019
Expended, net of recoveries |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 77,500 |
Expended, net of recoveries | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 77,475 | 66,298
Liability for future expenditures | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 161,650 | 169,390
Deferred income taxes | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 42,595 | 41,667
SAVEGREEN | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 107,796 | 83,589
Postemployment and other benefit costs | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | 23,772 | 55,274
Cost of removal | NJNG |  |
Schedule of Regulatory Assets and Liabilities [Line Items] |  |
Regulatory assets-noncurrent | $ 130,885 | $ 112,362

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- Definition Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 980 -SubTopic 340 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478742/980-340-50-1 + Details
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