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Pay vs Performance Disclosure pure in Thousands | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Pay vs Performance Disclosure |  |  |  |  |
Pay vs Performance Disclosure, Table | Pay Versus Performance The following section was prepared in accordance with the SEC’s pay versus performance disclosure rules (Item 402(v) of Regulation S-K) (PvP Rules). The PvP Rules include a specific definition of pay, referred to as Compensation Actually Paid (CAP), which is compared to certain performance measures as required by the PvP Rules. The Company does not use CAP as a basis for making compensation decisions. For a discussion of the Company’s executive compensation policies and programs and an explanation of how executive compensation decisions are made, please refer to the Compensation Discussion and Analysis. Pay versus performance table
​ | Year | ​ | ​ | Summary Compensation Table Total for PEO 1 | ​ | ​ | Compensation Actually Paid 2 to PEO | ​ | ​ | Average Summary Compensation Table Total for Non-PEO Named Executive Officers 3 | ​ | ​ | Average Compensation Actually Paid 2 to Non-PEO Named Executive Officers | ​ | ​ | Value of Initial Fixed $100 Investment Based On: | ​ | ​ | Net Income ( Loss) (in thousands) | ​ | ​ | HEI Consolidated Adjusted Net Income 5 (in thousands) | ​
​ | Total Shareholder Return | ​ | ​ | Peer Group 4 Total Shareholder Return | ​
​ | (a) | ​ | ​ | (b) | ​ | ​ | (c) | ​ | ​ | (d) | ​ | ​ | (e) | ​ | ​ | (f) | ​ | ​ | (g) | ​ | ​ | (h) | ​ | ​ | (i) | ​
​ | 2024 | ​ | ​ | ​ | $ | 6,536,011 | ​ | ​ | ​ | ​ | $ | 3,722,841 | ​ | ​ | ​ | ​ | $ | 2,305,812 | ​ | ​ | ​ | ​ | $ | 1,901,282 | ​ | ​ | ​ | ​ | $ | 24 | ​ | ​ | ​ | ​ | $ | 127 | ​ | ​ | ​ | ​ | $ | (1,426,009) | ​ | ​ | ​ | ​ | $ | 180,351 | ​ | ​
​ | 2023 | ​ | ​ | ​ | ​ | 5,386,250 | ​ | ​ | ​ | ​ | ​ | (87,730) | ​ | ​ | ​ | ​ | ​ | 1,419,395 | ​ | ​ | ​ | ​ | ​ | 242,136 | ​ | ​ | ​ | ​ | ​ | 35 | ​ | ​ | ​ | ​ | ​ | 107 | ​ | ​ | ​ | ​ | ​ | 199,238 | ​ | ​ | ​ | ​ | ​ | 199,238 | ​ | ​
​ | 2022 | ​ | ​ | ​ | ​ | 3,811,515 | ​ | ​ | ​ | ​ | ​ | 4,046,729 | ​ | ​ | ​ | ​ | ​ | 1,353,755 | ​ | ​ | ​ | ​ | ​ | 1,241,936 | ​ | ​ | ​ | ​ | ​ | 99 | ​ | ​ | ​ | ​ | ​ | 117 | ​ | ​ | ​ | ​ | ​ | 241,138 | ​ | ​ | ​ | ​ | ​ | 230,562 | ​ | ​
​ | 2021 | ​ | ​ | ​ | ​ | 5,933,523 | ​ | ​ | ​ | ​ | ​ | 7,901,297 | ​ | ​ | ​ | ​ | ​ | 3,002,679 | ​ | ​ | ​ | ​ | ​ | 2,673,496 | ​ | ​ | ​ | ​ | ​ | 95 | ​ | ​ | ​ | ​ | ​ | 116 | ​ | ​ | ​ | ​ | ​ | 246,166 | ​ | ​ | ​ | ​ | ​ | 229,909 | ​ | ​
​ | 2020 | ​ | ​ | ​ | ​ | 5,108,212 | ​ | ​ | ​ | ​ | ​ | 315,826 | ​ | ​ | ​ | ​ | ​ | 1,904,441 | ​ | ​ | ​ | ​ | ​ | 794,294 | ​ | ​ | ​ | ​ | ​ | 78 | ​ | ​ | ​ | ​ | ​ | 99 | ​ | ​ | ​ | ​ | ​ | 197,824 | ​ | ​ | ​ | ​ | ​ | 225,181 | ​ | ​
1 2024, 2023 and 2022: Mr. Seu; 2021 and 2020: Constance Lau (former HEI CEO). ​ Compensation Actually Paid is calculated as the summary compensation table total for the Principal Executive Officer (PEO) (column (b) above) and average summary compensation table total for the Non-PEO named executive officers (column (d) above), as applicable, with the adjustments to the value of pension and stock adjusted as set out below pursuant to Item 402(v)(2)(iii) of Regulation S-K*. ​ 2024: Messrs. DeGhetto and Murao and Mss. Kimura and Teranishi; 2023: Messrs. DeGhetto, Murao and Paul Ito (former HEI CFO) and Mss. Kimura and Teranishi; 2022: Messrs. Ito, Murao and Gregory Hazelton (former HEI CFO) and Mss. Kimura and Teranishi; 2021: Messrs. Seu, Murao, Hazelton and Richard Wacker (former ASB CEO) and Ms. Teranishi; 2020: Messrs. Seu, Murao, Hazelton and Wacker. ​ Edison Electric Institute Index. ​ HEI Consolidated Adjusted Net Income represents HEI consolidated net income, adjusted to exclude certain items. See paragraphs entitled “Non-GAAP Net Income Metrics” in the Compensation Discussion and Analysis and “Reconciliation of GAAP to Non-GAAP Measures: Incentive Compensation Adjustments,” attached as Exhibit A. ​ 2024 adjustments pursuant to Item 402(v)(2)(iii) of Regulation S-K: ​
​ | ​ | ​ | ​ | PEO | ​ | ​ | Average Non-PEO Named Executive Officers | ​
​ | Summary Compensation Table Total | ​ | ​ | ​ | $ | 6,536,011 | ​ | ​ | ​ | ​ | $ | 2,305,812 | ​ | ​
​ | Pension adjustments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | SCT reversal 1 | ​ | ​ | ​ | ​ | (1,880,600) | ​ | ​ | ​ | ​ | ​ | (178,385) | ​ | ​
​ | Service cost 2 | ​ | ​ | ​ | ​ | 240,131 | ​ | ​ | ​ | ​ | ​ | 69,069 | ​ | ​
​ | Stock adjustments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | SCT reversal 3 | ​ | ​ | ​ | ​ | (1,695,190) | ​ | ​ | ​ | ​ | ​ | (369,958) | ​ | ​
​ | New awards outstanding 4 | ​ | ​ | ​ | ​ | 1,147,978 | ​ | ​ | ​ | ​ | ​ | 256,175 | ​ | ​
​ | Change in value of prior year awards 5 | ​ | ​ | ​ | ​ | (234,856) | ​ | ​ | ​ | ​ | ​ | (38,035) | ​ | ​
​ | New awards vested during the year 6 | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | — | ​ | ​
​ | Vested prior year awards 7 | ​ | ​ | ​ | ​ | (390,633) | ​ | ​ | ​ | ​ | ​ | (56,998) | ​ | ​
​ | Forfeitures 8 | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | (86,398) | ​ | ​
​ | Compensation Actually Paid | ​ | ​ | ​ | $ | 3,722,841 | ​ | ​ | ​ | ​ | $ | 1,901,282 | ​ | ​
​
1 See Item 402(v)(2)(iii)(A) of Regulation S-K. ​ 2 See Item 402(v)(2)(iii)(B)(1)(i) of Regulation S-K. ​ 3 See Item 402(v)(2)(iii)(C)(1) of Regulation S-K. ​ 4 See Item 402(v)(2)(iii)(C)(1)(i) of Regulation S-K. ​ 5 See Item 402(v)(2)(iii)(C)(1)(ii) of Regulation S-K. ​ 6 See Item 402(v)(2)(iii)(C)(1)(iii) of Regulation S-K. 7 See Item 402(v)(2)(iii)(C)(1)(iv) of Regulation S-K. ​ 8 See Item 402(v)(2)(iii)(C)(1)(v) of Regulation S-K. ​ See the Pay Versus Performance Sections of the 2023 and 2024 Proxy Statements for prior years’ calculation of CAP under Item 402(v)(2)(iii). ​ ​ |  |  |  |
Company Selected Measure Name | HEI Consolidated Adjusted Net Income |  |  |  |
Named Executive Officers, Footnote | 1 2024, 2023 and 2022: Mr. Seu; 2021 and 2020: Constance Lau (former HEI CEO). ​ Compensation Actually Paid is calculated as the summary compensation table total for the Principal Executive Officer (PEO) (column (b) above) and average summary compensation table total for the Non-PEO named executive officers (column (d) above), as applicable, with the adjustments to the value of pension and stock adjusted as set out below pursuant to Item 402(v)(2)(iii) of Regulation S-K*. ​ 2024: Messrs. DeGhetto and Murao and Mss. Kimura and Teranishi; 2023: Messrs. DeGhetto, Murao and Paul Ito (former HEI CFO) and Mss. Kimura and Teranishi; 2022: Messrs. Ito, Murao and Gregory Hazelton (former HEI CFO) and Mss. Kimura and Teranishi; 2021: Messrs. Seu, Murao, Hazelton and Richard Wacker (former ASB CEO) and Ms. Teranishi; 2020: Messrs. Seu, Murao, Hazelton and Wacker. |  |  |  |
Peer Group Issuers, Footnote | Edison Electric Institute Index. |  |  |  |
PEO Total Compensation Amount | $ 6,536,011 | $ 5,386,250 | $ 3,811,515 | $ 5,933,523 | $ 5,108,212
PEO Actually Paid Compensation Amount | $ 3,722,841 | (87,730) | 4,046,729 | 7,901,297 | 315,826
Adjustment To PEO Compensation, Footnote | 2024 adjustments pursuant to Item 402(v)(2)(iii) of Regulation S-K: ​
​ | ​ | ​ | ​ | PEO | ​ | ​ | Average Non-PEO Named Executive Officers | ​
​ | Summary Compensation Table Total | ​ | ​ | ​ | $ | 6,536,011 | ​ | ​ | ​ | ​ | $ | 2,305,812 | ​ | ​
​ | Pension adjustments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | SCT reversal 1 | ​ | ​ | ​ | ​ | (1,880,600) | ​ | ​ | ​ | ​ | ​ | (178,385) | ​ | ​
​ | Service cost 2 | ​ | ​ | ​ | ​ | 240,131 | ​ | ​ | ​ | ​ | ​ | 69,069 | ​ | ​
​ | Stock adjustments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | SCT reversal 3 | ​ | ​ | ​ | ​ | (1,695,190) | ​ | ​ | ​ | ​ | ​ | (369,958) | ​ | ​
​ | New awards outstanding 4 | ​ | ​ | ​ | ​ | 1,147,978 | ​ | ​ | ​ | ​ | ​ | 256,175 | ​ | ​
​ | Change in value of prior year awards 5 | ​ | ​ | ​ | ​ | (234,856) | ​ | ​ | ​ | ​ | ​ | (38,035) | ​ | ​
​ | New awards vested during the year 6 | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | — | ​ | ​
​ | Vested prior year awards 7 | ​ | ​ | ​ | ​ | (390,633) | ​ | ​ | ​ | ​ | ​ | (56,998) | ​ | ​
​ | Forfeitures 8 | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | (86,398) | ​ | ​
​ | Compensation Actually Paid | ​ | ​ | ​ | $ | 3,722,841 | ​ | ​ | ​ | ​ | $ | 1,901,282 | ​ | ​
​
1 See Item 402(v)(2)(iii)(A) of Regulation S-K. 2 See Item 402(v)(2)(iii)(B)(1)(i) of Regulation S-K. 3 See Item 402(v)(2)(iii)(C)(1) of Regulation S-K. 4 See Item 402(v)(2)(iii)(C)(1)(i) of Regulation S-K. 5 See Item 402(v)(2)(iii)(C)(1)(ii) of Regulation S-K. 6 See Item 402(v)(2)(iii)(C)(1)(iii) of Regulation S-K. 7 See Item 402(v)(2)(iii)(C)(1)(iv) of Regulation S-K. 8 See Item 402(v)(2)(iii)(C)(1)(v) of Regulation S-K. |  |  |  |
Non-PEO NEO Average Total Compensation Amount | $ 2,305,812 | 1,419,395 | 1,353,755 | 3,002,679 | 1,904,441
Non-PEO NEO Average Compensation Actually Paid Amount | $ 1,901,282 | 242,136 | 1,241,936 | 2,673,496 | 794,294
Adjustment to Non-PEO NEO Compensation Footnote | 2024 adjustments pursuant to Item 402(v)(2)(iii) of Regulation S-K: ​
​ | ​ | ​ | ​ | PEO | ​ | ​ | Average Non-PEO Named Executive Officers | ​
​ | Summary Compensation Table Total | ​ | ​ | ​ | $ | 6,536,011 | ​ | ​ | ​ | ​ | $ | 2,305,812 | ​ | ​
​ | Pension adjustments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | SCT reversal 1 | ​ | ​ | ​ | ​ | (1,880,600) | ​ | ​ | ​ | ​ | ​ | (178,385) | ​ | ​
​ | Service cost 2 | ​ | ​ | ​ | ​ | 240,131 | ​ | ​ | ​ | ​ | ​ | 69,069 | ​ | ​
​ | Stock adjustments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | SCT reversal 3 | ​ | ​ | ​ | ​ | (1,695,190) | ​ | ​ | ​ | ​ | ​ | (369,958) | ​ | ​
​ | New awards outstanding 4 | ​ | ​ | ​ | ​ | 1,147,978 | ​ | ​ | ​ | ​ | ​ | 256,175 | ​ | ​
​ | Change in value of prior year awards 5 | ​ | ​ | ​ | ​ | (234,856) | ​ | ​ | ​ | ​ | ​ | (38,035) | ​ | ​
​ | New awards vested during the year 6 | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | — | ​ | ​
​ | Vested prior year awards 7 | ​ | ​ | ​ | ​ | (390,633) | ​ | ​ | ​ | ​ | ​ | (56,998) | ​ | ​
​ | Forfeitures 8 | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | (86,398) | ​ | ​
​ | Compensation Actually Paid | ​ | ​ | ​ | $ | 3,722,841 | ​ | ​ | ​ | ​ | $ | 1,901,282 | ​ | ​
​
1 See Item 402(v)(2)(iii)(A) of Regulation S-K. 2 See Item 402(v)(2)(iii)(B)(1)(i) of Regulation S-K. 3 See Item 402(v)(2)(iii)(C)(1) of Regulation S-K. 4 See Item 402(v)(2)(iii)(C)(1)(i) of Regulation S-K. 5 See Item 402(v)(2)(iii)(C)(1)(ii) of Regulation S-K. 6 See Item 402(v)(2)(iii)(C)(1)(iii) of Regulation S-K. 7 See Item 402(v)(2)(iii)(C)(1)(iv) of Regulation S-K. 8 See Item 402(v)(2)(iii)(C)(1)(v) of Regulation S-K. |  |  |  |
Compensation Actually Paid vs. Total Shareholder Return | CAP Versus TSR Performance 2020-2024 |  |  |  |
Compensation Actually Paid vs. Net Income | CAP Versus Net Income (Loss) 2020-2024 |  |  |  |
Compensation Actually Paid vs. Company Selected Measure | CAP Versus HEI Consolidated Adjusted Net Income 2020-2024 |  |  |  |
Tabular List, Table | Financial performance measures used to link company performance to executive compensation The following financial performance measures, in our assessment, represent the most important financial performance measures used by us to link company performance to the compensation paid to our named executive officers for 2024. These financial performance measures are described in the Compensation Discussion and Analysis, in the tables entitled “2024 Annual Incentive Performance Metrics & Why We Use Them” and “2024-26 Long-Term Incentive Performance Metrics & Why We Use Them.”
​ | Financial performance measure | ​ | ​ | NEO | ​
​ | HEI consolidated adjusted net income | ​ | ​ | Seu, DeGhetto, Murao | ​
​ | HEI relative TSR | ​ | ​ | Seu, DeGhetto, Murao, Kimura | ​
​ | Utility adjusted net income | ​ | ​ | Kimura | ​
Total Shareholder Return Amount | $ 24 | 35 | 99 | 95 | 78
Peer Group Total Shareholder Return Amount | 127 | 107 | 117 | 116 | 99
Net Income (Loss) | $ (1,426,009,000) | $ 199,238,000 | $ 241,138,000 | $ 246,166,000 | $ 197,824,000
Company Selected Measure Amount | 180,351 | 199,238 | 230,562 | 229,909 | 225,181
PEO Name | Mr. Seu |  |  |  |
Measure:: 1 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | HEI consolidated adjusted net income |  |  |  |
Non-GAAP Measure Description | HEI Consolidated Adjusted Net Income represents HEI consolidated net income, adjusted to exclude certain items. See paragraphs entitled “Non-GAAP Net Income Metrics” in the Compensation Discussion and Analysis and “Reconciliation of GAAP to Non-GAAP Measures: Incentive Compensation Adjustments,” attached as Exhibit A |  |  |  |
Measure:: 2 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | HEI relative TSR |  |  |  |
Measure:: 3 |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Name | Utility adjusted net income |  |  |  |
PEO | Pension Adjustments Service Cost |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ 240,131 |  |  |  |
PEO | Pension Adjustments, SCT Reversal [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (1,880,600) |  |  |  |
PEO | Stock Adjustments, SCT Reversal [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (1,695,190) |  |  |  |
PEO | Stock Adjustments, New Award Outsatanding [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 1,147,978 |  |  |  |
PEO | Stock Adjustments, Change In Value of Prior Year Awards [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (234,856) |  |  |  |
PEO | Stock Adjustments, New Award Vested During the Year [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |
PEO | Stock Adjustments, Vested Prior Year Award [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (390,633) |  |  |  |
PEO | Stock Adjustments, Forfeiture [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |
Non-PEO NEO | Pension Adjustments Service Cost |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 69,069 |  |  |  |
Non-PEO NEO | Pension Adjustments, SCT Reversal [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (178,385) |  |  |  |
Non-PEO NEO | Stock Adjustments, SCT Reversal [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (369,958) |  |  |  |
Non-PEO NEO | Stock Adjustments, New Award Outsatanding [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 256,175 |  |  |  |
Non-PEO NEO | Stock Adjustments, Change In Value of Prior Year Awards [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (38,035) |  |  |  |
Non-PEO NEO | Stock Adjustments, New Award Vested During the Year [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount |  |  |  |  |
Non-PEO NEO | Stock Adjustments, Vested Prior Year Award [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (56,998) |  |  |  |
Non-PEO NEO | Stock Adjustments, Forfeiture [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ (86,398) |  |  |  |

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