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Condensed Consolidated Statements of Changes in Common Stock Equity (unaudited) - HECO - USD ($) $ in Thousands | Total | Hawaiian Electric Company, Inc. and Subsidiaries | Common stock | Common stock Hawaiian Electric Company, Inc. and Subsidiaries | Premium on capital stock Hawaiian Electric Company, Inc. and Subsidiaries | Retained earnings | Retained earnings Hawaiian Electric Company, Inc. and Subsidiaries | Accumulated other comprehensive income (loss) | Accumulated other comprehensive income (loss) Hawaiian Electric Company, Inc. and Subsidiaries
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance (in shares) at Dec. 31, 2022 |  |  | 109,471,000 | 17,854,000 |  |  |  |  |
Beginning balance at Dec. 31, 2022 | $ 2,202,499 | $ 2,344,170 | $ 1,692,697 | $ 119,048 | $ 810,955 | $ 845,830 | $ 1,411,306 | $ (336,028) | $ 2,861
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income (loss) for common stock | 54,721 | 47,009 |  |  |  | 54,721 | 47,009 |  |
Other comprehensive (loss) income, net of tax benefits | 20,488 | (45) |  |  |  |  |  | 20,488 | (45)
Common stock dividends | (39,446) | (32,250) |  |  |  | (39,446) | (32,250) |  |
Ending balance (in shares) at Mar. 31, 2023 |  |  | 109,572,000 | 17,854,000 |  |  |  |  |
Ending balance at Mar. 31, 2023 | 2,237,955 | 2,358,884 | $ 1,692,390 | $ 119,048 | 810,955 | 861,105 | 1,426,065 | (315,540) | 2,816
Beginning balance (in shares) at Dec. 31, 2022 |  |  | 109,471,000 | 17,854,000 |  |  |  |  |
Beginning balance at Dec. 31, 2022 | 2,202,499 | 2,344,170 | $ 1,692,697 | $ 119,048 | 810,955 | 845,830 | 1,411,306 | (336,028) | 2,861
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income (loss) for common stock | 109,331 | 92,308 |  |  |  |  |  |  |
Other comprehensive (loss) income, net of tax benefits | 12,879 | (89) |  |  |  |  |  |  |
Common stock dividends |  | (64,500) |  |  |  |  |  |  |
Ending balance (in shares) at Jun. 30, 2023 |  |  | 109,612,000 | 17,854,000 |  |  |  |  |
Ending balance at Jun. 30, 2023 | 2,249,377 | 2,371,889 | $ 1,696,258 | $ 119,048 | 810,955 | 876,268 | 1,439,114 | (323,149) | 2,772
Beginning balance (in shares) at Mar. 31, 2023 |  |  | 109,572,000 | 17,854,000 |  |  |  |  |
Beginning balance at Mar. 31, 2023 | 2,237,955 | 2,358,884 | $ 1,692,390 | $ 119,048 | 810,955 | 861,105 | 1,426,065 | (315,540) | 2,816
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income (loss) for common stock | 54,610 | 45,299 |  |  |  | 54,610 | 45,299 |  |
Other comprehensive (loss) income, net of tax benefits | (7,609) | (44) |  |  |  |  |  | (7,609) | (44)
Common stock dividends | (39,447) | (32,250) |  |  |  | (39,447) | (32,250) |  |
Ending balance (in shares) at Jun. 30, 2023 |  |  | 109,612,000 | 17,854,000 |  |  |  |  |
Ending balance at Jun. 30, 2023 | $ 2,249,377 | 2,371,889 | $ 1,696,258 | $ 119,048 | 810,955 | 876,268 | 1,439,114 | (323,149) | 2,772
Beginning balance (in shares) at Dec. 31, 2023 | 110,151,798 |  | 110,152,000 | 17,854,000 |  |  |  |  |
Beginning balance at Dec. 31, 2023 | $ 2,344,841 | 2,409,110 | $ 1,707,471 | $ 119,048 | 810,955 | 926,720 | 1,476,258 | (289,350) | 2,849
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income (loss) for common stock | 42,122 | 39,221 |  |  |  | 42,122 | 39,221 |  |
Other comprehensive (loss) income, net of tax benefits | (9,801) | (49) |  |  |  |  |  | (9,801) | (49)
Common stock dividends |  | (13,000) |  |  |  |  | (13,000) |  |
Ending balance (in shares) at Mar. 31, 2024 |  |  | 110,303,000 | 17,854,000 |  |  |  |  |
Ending balance at Mar. 31, 2024 | $ 2,377,380 | 2,435,282 | $ 1,707,689 | $ 119,048 | 810,955 | 968,842 | 1,502,479 | (299,151) | 2,800
Beginning balance (in shares) at Dec. 31, 2023 | 110,151,798 |  | 110,152,000 | 17,854,000 |  |  |  |  |
Beginning balance at Dec. 31, 2023 | $ 2,344,841 | 2,409,110 | $ 1,707,471 | $ 119,048 | 810,955 | 926,720 | 1,476,258 | (289,350) | 2,849
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income (loss) for common stock | (1,253,362) | (1,190,173) |  |  |  |  |  |  |
Other comprehensive (loss) income, net of tax benefits | $ (8,207) | (95) |  |  |  |  |  |  |
Common stock dividends |  | (26,000) |  |  |  |  |  |  |
Ending balance (in shares) at Jun. 30, 2024 | 110,303,446 |  | 110,303,000 | 17,854,000 |  |  |  |  |
Ending balance at Jun. 30, 2024 | $ 1,085,273 | 1,192,842 | $ 1,709,472 | $ 119,048 | 810,955 | (326,642) | 260,085 | (297,557) | 2,754
Beginning balance (in shares) at Mar. 31, 2024 |  |  | 110,303,000 | 17,854,000 |  |  |  |  |
Beginning balance at Mar. 31, 2024 | 2,377,380 | 2,435,282 | $ 1,707,689 | $ 119,048 | 810,955 | 968,842 | 1,502,479 | (299,151) | 2,800
Increase (decrease) in stockholders' equity |  |  |  |  |  |  |  |  |
Net income (loss) for common stock | (1,295,484) | (1,229,394) |  |  |  | (1,295,484) | (1,229,394) |  |
Other comprehensive (loss) income, net of tax benefits | $ 1,594 | (46) |  |  |  |  |  | 1,594 | (46)
Common stock dividends |  | (13,000) |  |  |  |  | (13,000) |  |
Ending balance (in shares) at Jun. 30, 2024 | 110,303,446 |  | 110,303,000 | 17,854,000 |  |  |  |  |
Ending balance at Jun. 30, 2024 | $ 1,085,273 | $ 1,192,842 | $ 1,709,472 | $ 119,048 | $ 810,955 | $ (326,642) | $ 260,085 | $ (297,557) | $ 2,754

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