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Maui windstorm and wildfires - Utilities Charged (Details) - Natural Disasters and Other Casualty Events - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Maui Windstorm and Wildfires |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | $ 236,396 | $ 102,582 | $ 2,014,809 | $ 102,582 | $ 138,383
Insurance recovery | (52,158) | (75,000) | (83,610) | (75,000) | (104,580)
Deferral treatment approved by the PUC | (8,589) | 0 | (24,143) | 0 | (14,692)
Total Maui windstorm and wildfires related expenses, net of insurance recoveries and approved deferral treatment | 175,649 | 27,582 | 1,907,056 | 27,582 | 19,111
Legal expenses |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | 17,963 | 10,751 | 57,990 | 10,751 | 34,876
Wildfire tort-related claims |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | 203,000 | 75,000 | 1,915,000 | 75,000 | 75,000
Other expense |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | 15,433 | 16,831 | 41,819 | 16,831 | 28,507
Hawaiian Electric Company, Inc. and Subsidiaries | Maui Windstorm and Wildfires |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | 228,250 | 88,942 | 1,991,692 | 88,942 | 114,808
Insurance recovery | (49,625) | (75,000) | (75,973) | (75,000) | (98,613)
Deferral treatment approved by the PUC | (8,589) | 0 | (24,143) | 0 | (14,692)
Total Maui windstorm and wildfires related expenses, net of insurance recoveries and approved deferral treatment | 170,036 | 13,942 | 1,891,576 | 13,942 | 1,503
Hawaiian Electric Company, Inc. and Subsidiaries | Legal expenses |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | 11,821 | 6,251 | 40,169 | 6,251 | 24,737
Hawaiian Electric Company, Inc. and Subsidiaries | Wildfire tort-related claims |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | 203,000 | 75,000 | 1,915,000 | 75,000 | 75,000
Hawaiian Electric Company, Inc. and Subsidiaries | Other expense |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Total Maui windstorm and wildfires related expenses | $ 13,429 | $ 7,691 | $ 36,523 | $ 7,691 | $ 15,071

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