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Consolidated Statements of Comprehensive Income (Parenthetical) - HECO - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Retirement benefit plans:
Net gains (losses) arising during the period, taxes (benefits)	$ 3,778	$ 65,174	$ 53,068
Amortization of net losses (gains), prior service gain and transition obligation included in net periodic benefit cost, tax benefits	(535)	6,820	6,665
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, (taxes) benefits	(2,846)	(69,345)	(59,429)
Hawaiian Electric Company, Inc. and Subsidiaries
Retirement benefit plans:
Net gains (losses) arising during the period, taxes (benefits)	3,529	64,925	52,554
Amortization of net losses (gains), prior service gain and transition obligation included in net periodic benefit cost, tax benefits	(688)	6,550	6,750
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, (taxes) benefits	$ (2,846)	$ (69,345)	$ (59,429)

X

- Definition

Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit) Recognized In Net Periodic Benefit Cost, Reclassification Adjustment From AOCI Tax

+ References

No definition available.

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X

- Definition

The amount of income taxes on the reclassification adjustments on pension and post retirement benefits for the accounting impact of the decisions issued by the Public Utilities Commission.

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- Definition

Amount of tax expense (benefit) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-SubTopic 10
-Topic 220
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-12

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