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, Reserved To Resolve Claims By Nonparticipating Plaintiffs

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No definition available.

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- Definition

Litigation Settlement, Claimants That Initially Opted Out And Have Not Signed Release Agreements, Number

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- Definition

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, Requested Proceeds As Percentage Of Attorney's Fee

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- Definition

Loss Contingency, Directors And Officers Liability Insurance

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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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- Definition

Loss Contingency, Miscellaneous Professional Liability Insurance

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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

Number Of Putative Actions Dismissed

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No definition available.

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- Definition

Number Of Subrogation Insurers

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No definition available.

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- Definition

Amount recognized for the passage of time, typically for liabilities, that have been discounted to their net present values. Excludes accretion associated with asset retirement obligations.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 420
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-Name Accounting Standards Codification
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- Definition

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

+ References

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 450
-SubTopic 20
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- Definition

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

+ References

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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
-SubTopic 20
-Name Accounting Standards Codification
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- Definition

Amount of loss (reversal of loss) recognized for loss contingency liability. Includes, but is not limited to, effect of revision in previously reported estimate.

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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

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

The cash inflow from parent as a source of financing that is recorded as additional paid in capital.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 230
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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.

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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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Maui windstorm and wildfires - Narrative (Details) $ in Thousands					1 Months Ended		2 Months Ended	3 Months Ended			6 Months Ended		14 Months Ended
	Apr. 10, 2026 USD ($) installment	Jan. 05, 2026 USD ($)	Dec. 31, 2025 USD ($)	Nov. 01, 2024 USD ($) claim installment	Apr. 30, 2026 USD ($)	Feb. 08, 2024 entity	Jun. 08, 2024 entity	Jun. 30, 2026 USD ($) entity plaintiff	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) entity plaintiff	Jun. 30, 2025 USD ($)	Nov. 06, 2024 entity	Jul. 14, 2026 class_action_case	Mar. 31, 2026 USD ($)
Public Utilities, General Disclosures [Line Items]
Proceeds from contributions from parent					$ 479,000
Wildfire tort-related claims								$ 154,000			$ 154,000
Wildfire related claims			$ 530,000					457,563			457,563
Wildfire tort-related claims			1,436,250					890,280			890,280
Excess liability insurance											0
Miscellaneous professional liability											0
Directors and officers liability insurance											71,000
Insurance Claims, Legal-Related Recoveries
Public Utilities, General Disclosures [Line Items]
Insurance reimbursement receivable								$ 48,000			$ 48,000
Tort-Related Legal Claims
Public Utilities, General Disclosures [Line Items]
Number of subrogation insurers \| entity								200			200
Tort-Related Legal Claims \| Maui Windstorm and Wildfires
Public Utilities, General Disclosures [Line Items]
Number of settlement agreements \| claim				2
Litigation settlement, fee expense accrued								$ 4,500			$ 4,500
Securities Action
Public Utilities, General Disclosures [Line Items]
Amount awarded		$ 47,800							$ 47,800
First settlement payment	$ 479,000
Shareholder Derivative Actions, District of Hawaii
Public Utilities, General Disclosures [Line Items]
Lawsuit claim filed \| entity							2						2
Shareholder Derivative Actions, Northern District of California
Public Utilities, General Disclosures [Line Items]
Lawsuit claim filed \| entity						3
Shareholder Derivative Actions
Public Utilities, General Disclosures [Line Items]
Amount awarded			$ 100,000
Percentage of attorney's fees requested of the proceeds			25.00%
Shareholder Derivative Actions \| Subsequent Event
Public Utilities, General Disclosures [Line Items]
Number of putative actions dismissed \| class_action_case														2
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
Hawaiian Electric Company, Inc. and Subsidiaries
Public Utilities, General Disclosures [Line Items]
First settlement payment	$ 479,000
Proceeds from contributions from parent											479,000	$ 0
Settlement payments reserved											$ 500,000
Plaintiffs that initially opted out and have no signed individual release agreements \| plaintiff								80			80
Wildfire tort-related claims								$ 1,300,000			$ 1,300,000				$ 1,440,000
Wildfire tort-related claims								162,383		$ 0	162,383	$ 0
Accretion expense								18,000			18,000
Wildfire related claims			$ 482,250					409,813			409,813
Wildfire tort-related claims			$ 1,436,250					890,280			890,280
Hawaiian Electric Company, Inc. and Subsidiaries \| Insurance Claims, Legal-Related Recoveries
Public Utilities, General Disclosures [Line Items]
Insurance reimbursement receivable								100			100
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
Installment payments \| installment	4			4
Discount rate				5.50%
Natural Disasters and Other Casualty Events \| Tort-Related Legal Claims \| Maui Windstorm and Wildfires \| Total Defendants
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								$ 80,500			$ 80,500
Committed contribution to humanitarian fund				$ 75,000