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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NATURAL GAS IN STORAGE (Details) $ in Thousands | Jun. 30, 2025 USD ($) Bcf | Sep. 30, 2024 USD ($) Bcf
--- | --- | ---
Inventory [Line Items] |  |
Natural Gas in Storage, value | $ | $ 168,157 | $ 199,125
Natural Gas in Storage, Bcf | Bcf | 36,600,000 | 43,900,000
NJNG |  |
Inventory [Line Items] |  |
Natural Gas in Storage, value | $ | $ 131,098 | $ 177,655
Natural Gas in Storage, Bcf | Bcf | 22,700,000 | 30,800,000
ES |  |
Inventory [Line Items] |  |
Natural Gas in Storage, value | $ | $ 36,530 | $ 21,378
Natural Gas in Storage, Bcf | Bcf | 13,700,000 | 13,100,000
S&T |  |
Inventory [Line Items] |  |
Natural Gas in Storage, value | $ | $ 528 | $ 92
Natural Gas in Storage, Bcf | Bcf | 200,000 | 0

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- Definition Natural Gas in Storage Nonmonetary Number of Billion Cubic Feet of Gas in Storage as of the balance sheet date. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of natural gas in storage, which is a mixture of gases (liquefied or otherwise), used for fuel and manufacturing purposes, which is ready for sale. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Details
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