Shareholders' equity (Tables)

9 Months Ended

Sep. 30, 2024

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income

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, 2023	$	(282,963)	$	1,638	$	(8,025)	$	(289,350)	$	2,849
Current period other comprehensive income (loss)	31,260		(220)		113		31,153		(93)
Balance, September 30, 2024	$	(251,703)	$	1,418	$	(7,912)	$	(258,197)	$	2,756
Balance, December 31, 2022	$	(328,904)	$	1,991	$	(9,115)	$	(336,028)	$	2,861
Current period other comprehensive income (loss)	(21,330)		(827)		161		(21,996)		(166)
Balance, September 30, 2023	$	(350,234)	$	1,164	$	(8,954)	$	(358,024)	$	2,695

Schedule of Reclassification out of AOCI

Reclassifications out of AOCI were as follows:

	Amount reclassified from AOCI								Affected line item in the  Statements of Income / Balance Sheets
	Three months ended September 30				Nine months ended September 30
(in thousands)	2024		2023		2024		2023
HEI consolidated
Amortization of unrealized holding losses on held-to-maturity securities	$	3,366	$	3,699	$	9,740	$	11,065	Bank revenues
Net realized gains on derivatives qualifying as cash flow hedges	(52)		(47)		(151)		(143)		Interest expense
Retirement benefit plans:
Amortization of prior service credit and net gains recognized during the period in net periodic benefit cost	(1,244)		(446)		(2,138)		(1,160)		See Note 9 for additional details
Impact of D&Os of the PUC included in regulatory assets	1,333		470		2,251		1,321		See Note 9 for additional details
Total reclassifications	$	3,403	$	3,676	$	9,702	$	11,083
Hawaiian Electric consolidated
Retirement benefit plans:
Amortization of prior service credit and net gains recognized during the period in net periodic benefit cost	$	(1,331)	$	(547)	$	(2,344)	$	(1,487)	See Note 9 for additional details
Impact of D&Os of the PUC included in regulatory assets	1,333		470		2,251		1,321		See Note 9 for additional details
Total reclassifications	$	2	$	(77)	$	(93)	$	(166)