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Electric utility segment - Regulatory Assets for COVID-19 Related Costs (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 09, 2022 | Dec. 31, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Regulatory Projects and Legal Obligations [Line Items] |  |  |  |
Bill credits |  |  |  | $ 2,000
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |
Regulatory Projects and Legal Obligations [Line Items] |  |  |  |
Recovery of deferral costs | $ 27,800 |  |  |
Recovery of deferral costs period | 3 years |  |  |
Hawaiian Electric Company, Inc. and Subsidiaries | COVID-19 |  |  |  |
Regulatory Projects and Legal Obligations [Line Items] |  |  |  |
Bill credits |  | $ 2,000 |  |
Public utilities in regulatory assets |  |  | $ 11,400 |

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- Details
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- Details
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