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REGULATORY ACCOUNTING - Narrative (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Regulatory Assets [Line Items] |  |
Amount of regulatory costs not yet approved | $ 267.0 | $ 241.7
Regulatory costs | 87.5 | 82.1
CL&P |  |
Regulatory Assets [Line Items] |  |
Amount of regulatory costs not yet approved | 180.4 | 166.7
Regulatory costs | 64.7 | 64.0
NSTAR Electric |  |
Regulatory Assets [Line Items] |  |
Amount of regulatory costs not yet approved | 27.8 | 21.9
Regulatory costs | 10.9 | 7.3
PSNH |  |
Regulatory Assets [Line Items] |  |
Amount of regulatory costs not yet approved | $ 2.1 | $ 1.2

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- Definition Deferred Regulatory Costs + References No definition available. + Details
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- Definition Amount of regulatory costs not yet approved by the regulatory authority. + References No definition available. + 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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Namespace Prefix: |
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- Details
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- Details
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