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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - NATURAL GAS IN STORAGE (Details) $ in Thousands | Jun. 30, 2023 USD ($) Bcf | Sep. 30, 2022 USD ($) Bcf
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Inventory [Line Items] |  |
Natural Gas in Storage, value | $ | $ 155,077 | $ 273,644
Natural Gas in Storage, Bcf | Bcf | 41,500,000 | 39,800,000
Natural Gas Distribution |  |
Inventory [Line Items] |  |
Natural Gas in Storage, value | $ | $ 118,776 | $ 191,175
Natural Gas in Storage, Bcf | Bcf | 21,700,000 | 29,000,000.0
Energy Services |  |
Inventory [Line Items] |  |
Natural Gas in Storage, value | $ | $ 36,301 | $ 82,469
Natural Gas in Storage, Bcf | Bcf | 19,800,000 | 10,800,000

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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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