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Shareholders' equity | 6 Months Ended
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Jun. 30, 2023
Equity [Abstract] |
Shareholders' equity | Shareholders' equity Accumulated other comprehensive income/(loss). Changes in the balances of each component of accumulated other comprehensive income/(loss) (AOCI) were as follows:
| HEI Consolidated |  |  |  | Hawaiian Electric Consolidated |  |
(in thousands) | Net unrealized gains (losses) on securities |  | Unrealized gains (losses) on derivatives |  | Retirement benefit plans |  | AOCI |  |  |  | AOCI-Retirement benefit plans |  |
Balance, December 31, 2022 | $ | (328,904) |  |  | $ | 1,991 |  |  | $ | (9,115) |  |  | $ | (336,028) |  |  |  |  | $ | 2,861 |  |  |
Current period other comprehensive income (loss) | 12,987 |  |  | (245) |  |  | 137 |  |  | 12,879 |  |  |  |  | (89) |  |  |
Balance, June 30, 2023 | $ | (315,917) |  |  | $ | 1,746 |  |  | $ | (8,978) |  |  | $ | (323,149) |  |  |  |  | $ | 2,772 |  |  |
Balance, December 31, 2021 | $ | (32,037) |  |  | $ | (3,638) |  |  | $ | (16,858) |  |  | $ | (52,533) |  |  |  |  | $ | (3,280) |  |  |
Current period other comprehensive income (loss) | (209,264) |  |  | 3,911 |  |  | 354 |  |  | (204,999) |  |  |  |  | 102 |  |  |
Balance, June 30, 2022 | $ | (241,301) |  |  | $ | 273 |  |  | $ | (16,504) |  |  | $ | (257,532) |  |  |  |  | $ | (3,178) |  |  |
Reclassifications out of AOCI were as follows:
|  | Amount reclassified from AOCI |  | Affected line item in the Statements of Income / Balance Sheets
|  | Three months ended June 30 |  | Six months ended June 30 |
(in thousands) |  | 2023 |  | 2022 |  | 2023 |  | 2022 |
HEI consolidated |  |  |  |  |  |  |  |  |  |
Net unrealized gains (losses) on available-for sale investment securities - amortization of unrealized holding losses on held-to-maturity securities |  | $ | 3,689 |  |  | $ | — |  |  | $ | 7,366 |  |  | $ | — |  |  | Bank revenues
Net realized losses (gains) on derivatives qualifying as cash flow hedges |  | (48) |  |  | 53 |  |  | (96) |  |  | 108 |  |  | Interest expense
Retirement benefit plans: |  |  |  |  |  |  |  |  |  |
Amortization of prior service credit and net losses (gains) recognized during the period in net periodic benefit cost |  | (357) |  |  | 122 |  |  | (714) |  |  | 4,623 |  |  | See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets |  | 426 |  |  | 56 |  |  | 851 |  |  | (4,269) |  |  | See Note 8 for additional details
Total reclassifications |  | $ | 3,710 |  |  | $ | 231 |  |  | $ | 7,407 |  |  | $ | 462 |  |  |
Hawaiian Electric consolidated |  |  |  |  |  |  |  |
Retirement benefit plans: |  |  |  |  |  |  |  |  |  |
Amortization of prior service credit and net losses (gains) recognized during the period in net periodic benefit cost |  | $ | (470) |  |  | $ | (5) |  |  | $ | (940) |  |  | $ | 4,371 |  |  | See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets |  | 426 |  |  | 56 |  |  | 851 |  |  | (4,269) |  |  | See Note 8 for additional details
Total reclassifications |  | $ | (44) |  |  | $ | 51 |  |  | $ | (89) |  |  | $ | 102 |  |  |

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