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v3.24.3

Basis of presentation (Details) $ in Thousands, shares in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2024 USD ($) shares | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Nov. 01, 2024 USD ($) installment | Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net losses incurred |  | $ 104,402 | $ 1,295,484 | $ (42,122) | $ (41,118) | $ (54,610) | $ (54,721) | $ 1,357,764 | $ (150,449) |  |
Wildfire tort-related claims | $ 1,915,000 | 1,915,000 |  |  |  |  |  | 1,915,000 |  |  | $ 75,000
Cash and cash equivalents | 1,159,635 | 1,159,635 |  |  | 667,129 |  |  | 1,159,635 | 667,129 |  | 679,546
Hawaiian Electric |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 677,700 | 677,700 |  |  |  |  |  | 677,700 |  |  |
Maui Windstorm and Wildfires | Natural Disasters and Other Casualty Events | Tort-Related Legal Claims | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Installment payments | installment |  |  |  |  |  |  |  |  |  | 4 |
Hawaiian Electric Company, Inc. and Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net losses incurred |  | 82,585 | $ 1,229,394 | $ (39,221) | (43,461) | $ (45,299) | $ (47,009) | 1,272,758 | (135,769) |  |
Wildfire tort-related claims | 1,920,000 | 1,920,000 |  |  |  |  |  | 1,920,000 |  |  |
Settlement accrual, current liability | 478,750 | 478,750 |  |  |  |  |  | 478,750 |  |  | 75,000
Settlement accrual, non-current liabilities | $ 1,436,250 | 1,436,250 |  |  |  |  |  | 1,436,250 |  |  | 0
Sale of stock, number of shares issued (in shares) | shares | 62.2 |  |  |  |  |  |  |  |  |  |
Sale of stock, received on transaction | $ 557,700 |  |  |  |  |  |  |  |  |  |
Cash and cash equivalents | 147,624 | $ 147,624 |  |  | $ 274,854 |  |  | $ 147,624 | $ 274,854 |  | $ 106,077
Hawaiian Electric Company, Inc. and Subsidiaries | Subsequent Event |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Settlement accrual, current liability |  |  |  |  |  |  |  |  |  | $ 479,000 |
Hawaiian Electric Company, Inc. and Subsidiaries | Over-Allotment Option |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sale of stock, received on transaction | $ 250,000 |  |  |  |  |  |  |  |  |  |

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