Line Of Credit Facility, Extended Maximum Borrowing Capacity

No definition available.

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Namespace Prefix:	he_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Extension Period

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Line Of Credit Facility, Number Of Extension Options

+ References

No definition available.

+ Details

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Namespace Prefix:	he_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of financial institutions with which the entity entered into a revolving Non Collateralized credit agreement with a letter of credit sub-facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	he_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- 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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+ Details

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Period Type:	duration

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

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-Section S99
-Paragraph 1
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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-Subparagraph (SX 210.5-02.19(b),22(b))
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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Balance Type:
Period Type:

- Details

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- Details

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Credit agreement and changes in debt - Narrative (Details)	May 14, 2023 USD ($) extensionOption institution	Feb. 18, 2022 USD ($) extensionOption	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Mar. 16, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 28, 2022 USD ($)	Oct. 20, 2022 USD ($)	May 14, 2021 USD ($) institution
HEI Facility
Credit agreement
Credit agreement	$ 175,000,000								$ 175,000,000
Credit agreement, remaining borrowing capacity	157,000,000
HEI Facility \| Senior Notes
Credit agreement
Aggregate principal amount					$ 100,000,000
Hawaiian Electric Facility
Credit agreement
Credit agreement	200,000,000
Credit agreement, remaining borrowing capacity	$ 180,000,000
Hawaiian Electric Company, Inc. and Subsidiaries \| Credit Facilities
Credit agreement
Number of financial institutions \| institution	8								9
Line of credit outstanding			$ 0			$ 0
Hawaiian Electric Company, Inc. and Subsidiaries \| Hawaiian Electric Facility
Credit agreement
Credit agreement		$ 200,000,000							$ 200,000,000
Number of extension options \| extensionOption	2	2
Extension period	1 year	1 year
Extended maximum borrowing capacity		$ 275,000,000
Hawaiian Electric, Parent \| Term Loan
Credit agreement
Line of credit outstanding				$ 65,000,000			$ 35,000,000
Aggregate principal amount								$ 100,000,000
Hawaiian Electric, Parent \| Term Loan \| SOFR
Credit agreement
Effective interest rate				5.81%