Shareholders' equity (Tables)

3 Months Ended

Mar. 31, 2023

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, 2022	$	(328,904)	$	1,991	$	(9,115)	$	(336,028)	$	2,861
Current period other comprehensive income (loss)	20,282		138		68		20,488		(45)
Balance, March 31, 2023	$	(308,622)	$	2,129	$	(9,047)	$	(315,540)	$	2,816
Balance, December 31, 2021	$	(32,037)	$	(3,638)	$	(16,858)	$	(52,533)	$	(3,280)
Current period other comprehensive income (loss)	(120,407)		3,072		176		(117,159)		51
Balance, March 31, 2022	$	(152,444)	$	(566)	$	(16,682)	$	(169,692)	$	(3,229)

Schedule of reclassifications out of accumulated other comprehensive income/(loss)

Reclassifications out of AOCI were as follows:

	Amount reclassified from AOCI					Affected line item in the  Statements of Income / Balance Sheets
		Three months ended March 31
(in thousands)		2023		2022
HEI consolidated
Net unrealized gains (losses) on available-for sale investment securities - amortization of unrealized holding losses on held-to-maturity securities		$	3,677	$	—	Bank revenues
Net realized losses (gains) on derivatives qualifying as cash flow hedges		(48)		55		Interest expense
Retirement benefit plans:
Amortization of prior service credit and net losses (gains) recognized during the period in net periodic benefit cost		(357)		4,501		See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets		425		(4,325)		See Note 8 for additional details
Total reclassifications		$	3,697	$	231
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)	$	4,376	See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets		425		(4,325)		See Note 8 for additional details
Total reclassifications		$	(45)	$	51