Collective Bargaining Agreement, General Wage Increase, Contract Term

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- Definition

Collective Bargaining Agreement, General Wage Increase, Percentage

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- Definition

Customer Bill Forgiveness

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- Definition

Public Utilities, Amortization Period For State Investment Tax Credit

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- Definition

Public Utilities, Interim General Rate Increase, Common Equity Capitalization

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Public Utilities, Interim General Rate Increase, Effective Interest Rate Of Return

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Public Utilities, Stipulated Return On Average Common Equity Rate

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- Definition

Public Utility, General Rate Increase, Maximum Exposure Cap

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- Definition

Public Utility, General Rate Increase, Risk Sharing Percentage, Ratepayer

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- Definition

Public Utility, General Rate Increase, Risk Sharing Percentage, Utility

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-- None. No documentation exists for this element. --

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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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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Electric utility segment - Most Recent Proceedings (Details) - USD ($)			1 Months Ended	12 Months Ended
	Oct. 22, 2020	Jul. 28, 2020	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Regulatory Projects and Legal Obligations [Line Items]
Bill credits				$ 2,000,000
Regulatory assets			$ 565,543,000	$ 565,543,000	$ 766,708,000
International Brotherhood Of Electrical Workers, AFL-CIO, Local 1260
Regulatory Projects and Legal Obligations [Line Items]
Collective bargaining agreement, general wage increase percentage				3.00%
Collective bargaining agreement, general wage increase, contract term				3 years
International Brotherhood Of Electrical Workers, AFL-CIO, Local 1260 \| Workforce Subject to Collective Bargaining Arrangements Expiring within One Year \| Unionized Employees Concentration Risk
Regulatory Projects and Legal Obligations [Line Items]
Operating revenues percentage				47.00%
Hawaiian Electric
Regulatory Projects and Legal Obligations [Line Items]
Common equity capitalization rate	58.00%
Stipulated ROACE rate	9.50%
Effective interest rate of return	7.37%
Hawaii Electric Light
Regulatory Projects and Legal Obligations [Line Items]
Common equity capitalization rate		58.00%
Stipulated ROACE rate		9.50%
Effective interest rate of return		7.52%
Amortization period for state investment tax credit		10 years
Risk sharing percentage, ratepayer		98.00%
Risk sharing percentage, rate increase		2.00%
Maximum exposure cap		$ 600,000
Hawaiian Electric Company, Inc. and Subsidiaries
Regulatory Projects and Legal Obligations [Line Items]
Regulatory assets			565,543,000	$ 565,543,000	$ 766,708,000
Hawaiian Electric Company, Inc. and Subsidiaries \| COVID-19
Regulatory Projects and Legal Obligations [Line Items]
Bill credits			2,000,000
Regulatory assets			$ 27,800,000	$ 27,800,000