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Rate and Regulatory Matters (Details) - Middlesex [Member] - USD ($) $ in Millions |  |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 02, 2023 | Jan. 02, 2022 | Dec. 31, 2021 | Mar. 31, 2022 | Nov. 30, 2021
Maturity Less than 30 Days [Member] |  |  |  |  |
Regulatory Liability [Line Items] |  |  |  |  |
Escrow account |  |  |  |  | $ 1.7
New Jersey Board of Public Utilities [Member] |  |  |  |  |
Regulatory Liability [Line Items] |  |  |  |  |
Approved increase in annual operating revenues |  | $ 20.7 | $ 27.7 | $ 3.7 |
Base rate amount |  |  | $ 513.5 |  |
Return on equity |  |  | 9.60% |  |
New Jersey Board of Public Utilities [Member] | Scenario Forecast [Member] |  |  |  |  |
Regulatory Liability [Line Items] |  |  |  |  |
Approved increase in annual operating revenues | $ 70.0 |  |  |  |

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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 440 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629 + Details
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