Humanitarian Aid Fund, Committed Contribution

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- Definition

Insurance Reimbursement Receivable

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- Definition

Litigation Settlement, Amount Awarded To Other Party, Number Of Installments

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- Definition

Litigation Settlement, Amount Awarded To Other Party, Number Of Settlement Funds

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No definition available.

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- Definition

Litigation Settlement, Amount Awarded To Other Party, Reserved To Resolve Claims By Nonparticipating Plaintiffs

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No definition available.

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- Definition

Litigation Settlement, Claimants That Signed Individual Settlement Agreement, Number

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- Definition

Litigation Settlement, Claimants That Submitted Opt Out Forms, Number

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- Definition

Litigation Settlement, Claimants That Submitted Opt Out Forms, Percentage

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Litigation Settlement, Discount Rate

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- Definition

Litigation Settlement, Fee Expense Accrued

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No definition available.

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- Definition

Litigation Settlement, Number Of Conditions To Trigger Payment

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- Definition

Litigation Settlement, Objections Filed, Number

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Litigation Settlement, Plaintiff Reply Brief, Period

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- Definition

Litigation Settlement, Requested Maximum Expenses

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- Definition

Litigation Settlement, Requested Proceeds As Percentage Of Attorney's Fee

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No definition available.

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- Definition

Loss Contingency, Directors And Officers Liability Insurance

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No definition available.

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- Definition

Loss Contingency, Directors And Officers Liability Insurance, Retention Amount

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No definition available.

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- Definition

Loss Contingency, Excess Liability Insurance

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No definition available.

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- Definition

Loss Contingency, Excess Liability Insurance, Retention Amount

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No definition available.

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- Definition

Loss Contingency, Miscellaneous Professional Liability Insurance

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No definition available.

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- Definition

Loss Contingency, Miscellaneous Professional Liability Insurance, Retention Amount

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No definition available.

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- Definition

Loss Contingency, Number Of Lawyers Representing Plaintiffs

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No definition available.

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- Definition

Loss Contingency, Property Insurance Coverage

+ References

No definition available.

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- Definition

Loss Contingency, Property Insurance Policy Limit

+ References

No definition available.

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- Definition

Loss Contingency, Property Insurance Policy Limit, Retention For Generation Assets

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No definition available.

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- Definition

Unusual Or Infrequent Item, Humanitarian Aid, Expected Beneficiary Amount

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No definition available.

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- Definition

Unusual Or Infrequent Item, Humanitarian Aid, Expected Funding Amount

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No definition available.

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- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
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- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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- Definition

Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

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- Definition

Amount of loss contingency liability expected to be resolved after one year or beyond the normal operating cycle, if longer.

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- Definition

Number of claims settled.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 450
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- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

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- Definition

Number of pending claims pertaining to a loss contingency.

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- Definition

Amount of receivable related to a loss contingency accrual. For example, an insurance recovery receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 460
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
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-URI https://asc.fasb.org/1943274/2147482425/460-10-50-3

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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.

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- Definition

The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Maui windstorm and wildfires - Narrative (Details) $ in Thousands						1 Months Ended	2 Months Ended	9 Months Ended		14 Months Ended
	Nov. 21, 2025	Nov. 05, 2025 USD ($)	Oct. 31, 2025 plaintiff claim	Nov. 01, 2024 USD ($) lawyer fund claim installment	May 04, 2024 USD ($)	Feb. 08, 2024 claim	Jun. 08, 2024 claim	Sep. 30, 2025 USD ($) condition	Sep. 30, 2024 USD ($)	Nov. 06, 2024 claim	Oct. 15, 2025 claim	Oct. 07, 2025 claim	Dec. 31, 2024 USD ($)	Nov. 08, 2023 USD ($)
Public Utilities, General Disclosures [Line Items]
Regulatory assets								$ 251,205					$ 227,424
Property insurance policy limit								500,000
Retention for property damages								1,000
Property insurance coverage								490,400
Settlement accrual, current liability								526,500					478,750
Settlement accrual, non-current liabilities								1,436,250					1,436,250
Excess liability insurance								11,000
Miscellaneous professional liability								0
Directors and officers liability insurance								72,000
Insurance Claims, Legal-Related Recoveries
Public Utilities, General Disclosures [Line Items]
Insurance reimbursement receivable								96,000
Indemnification Agreement
Public Utilities, General Disclosures [Line Items]
Amount awarded					$ 18,400
Maui Wildfire Negligence \| Wildfire tort-related claims \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Number of pending claims \| claim			1
Maui Wildfire Negligence \| Maui Windstorm and Wildfires
Public Utilities, General Disclosures [Line Items]
Excess liability insurance								165,000
Miscellaneous professional liability								25,000
Excess liability insurance, retention amount								300
Miscellaneous liability insurance, retention amount								1,000
Directors and officers liability insurance								145,000
Directors and officers liability insurance, retention								1,000
Maui Wildfire Negligence \| Maui Windstorm and Wildfires \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Number of pending claims \| claim			2
Tort-Related Legal Claims \| Maui Windstorm and Wildfires
Public Utilities, General Disclosures [Line Items]
Number of settlement agreements \| claim				2
Number of lawyers representing individual plaintiffs \| lawyer				30
Litigation settlement, fee expense accrued								3,500
Securities Action \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Amount awarded		$ 47,800
Shareholder Derivative Actions \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Amount awarded		$ 100,000
Percentage of attorney's fees requested of the proceeds		25.00%
Expenses not to exceed amount		$ 475
Shareholder Derivative Actions, District Of Hawaii
Public Utilities, General Disclosures [Line Items]
Lawsuit claim filed \| claim							2			2
Shareholder Derivative Actions, Northern District Of California
Public Utilities, General Disclosures [Line Items]
Lawsuit claim filed \| claim						3
County Of Maui \| Maui Wildfire Negligence \| Maui Windstorm and Wildfires \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Lawsuit claim filed \| claim			1
Spectrum Oceanic LLC \| Maui Wildfire Negligence \| Maui Windstorm and Wildfires \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Lawsuit claim filed \| claim			1
Subrogation Insurers \| Maui Wildfire Negligence \| Maui Windstorm and Wildfires \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Number of cases filed by subrogation insurers \| plaintiff			200
Hawaiian Electric Company, Inc. and Subsidiaries
Public Utilities, General Disclosures [Line Items]
Insurance recoveries								8,600	$ 0
Settlement accrual, current liability				$ 479,000				478,750					478,750
Settlement accrual, non-current liabilities								1,436,250					$ 1,436,250
Settlement payments reserved								500,000
Hawaiian Electric Company, Inc. and Subsidiaries \| Insurance Claims, Legal-Related Recoveries
Public Utilities, General Disclosures [Line Items]
Insurance reimbursement receivable								$ 47,000
Hawaiian Electric Company, Inc. and Subsidiaries \| Indemnification Agreement
Public Utilities, General Disclosures [Line Items]
Settlement accrual									$ 14,500
Natural Disasters and Other Casualty Events
Public Utilities, General Disclosures [Line Items]
Expected funding amount														$ 175,000
Expected beneficiary amount														$ 1,500
Natural Disasters and Other Casualty Events \| Tort-Related Legal Claims \| Maui Windstorm and Wildfires
Public Utilities, General Disclosures [Line Items]
Amount awarded				$ 1,990,000
Settlement funds \| fund				2
Installment payments \| installment				4
Discount rate				5.50%
Number of conditions to trigger payments \| condition								2
Natural Disasters and Other Casualty Events \| Tort-Related Legal Claims \| Maui Windstorm and Wildfires \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Number of claimants that submitted opt out forms \| claim											250
Percentage of claimants that submitted opt out forms											1.00%
Number of claimants that signed an individual settlement agreement \| claim											140
Natural Disasters and Other Casualty Events \| Subrogation Insurers \| Tort-Related Legal Claims \| Maui Windstorm and Wildfires \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Number of objections filed \| claim												1
Natural Disasters and Other Casualty Events \| Subrogation Insurers \| Tort-Related Legal Claims \| Maui Windstorm and Wildfires \| Subsequent Event \| Forecast
Public Utilities, General Disclosures [Line Items]
Plaintiff reply brief period	14 days
Natural Disasters and Other Casualty Events \| Total Defendants \| Tort-Related Legal Claims \| Maui Windstorm and Wildfires
Public Utilities, General Disclosures [Line Items]
Amount awarded				$ 4,040,000
Natural Disasters and Other Casualty Events \| Hawaiian Electric Company, Inc. and Subsidiaries
Public Utilities, General Disclosures [Line Items]
Regulatory assets								$ 74,500
Committed contribution to humanitarian fund				$ 75,000				75,000
Natural Disasters and Other Casualty Events \| Hawaiian Electric Company, Inc. and Subsidiaries \| Tort-Related Legal Claims \| Maui Windstorm and Wildfires
Public Utilities, General Disclosures [Line Items]
Insurance receivable								$ 40,000