Shareholders' equity (Tables)

12 Months Ended

Dec. 31, 2022

Equity [Abstract]

Schedule of accumulated other comprehensive income

Changes in the balances of each component of 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, 2019	$	2,481	$	(1,613)	$	(20,907)	$	(20,039)	$	(1,279)
Current period other comprehensive income (loss) and reclassifications, net of taxes	17,505		(1,750)		3,020		18,775		(1,640)
Balance, December 31, 2020	19,986		(3,363)		(17,887)		(1,264)		(2,919)
Current period other comprehensive income (loss) and reclassifications, net of taxes	(52,023)		(275)		1,029		(51,269)		(361)
Balance, December 31, 2021	(32,037)		(3,638)		(16,858)		(52,533)		(3,280)
Current period other comprehensive income (loss) and reclassifications, net of taxes	(296,867)		5,629		7,743		(283,495)		6,141
Balance, December 31, 2022	$	(328,904)	$	1,991	$	(9,115)	$	(336,028)	$	2,861

Schedule of reclassifications out of AOCI

Reclassifications out of AOCI were as follows:

	Amount reclassified from AOCI						Affected line item in the Statement of Income/Balance Sheet
Years ended December 31	2022		2021		2020
(in thousands)
HEI consolidated
Net unrealized gains (losses) on available-for sale investment securities:
Net realized gains on securities included in net income	$	—	$	(387)	$	(1,638)	Gain on sale of investment securities, net
Amortization of unrealized holding losses on held-to-maturity securities	3,993		—		—		Bank revenues
Net realized losses on derivatives qualifying as cash flow hedges	172		37		—		Interest expense
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	19,659		19,253		23,689		See Note 10 for additional details
Impact of D&Os of the PUC included in regulatory assets	(199,936)		(171,345)		39,860		See Note 10 for additional details
Total reclassifications	$	(176,112)	$	(152,442)	$	61,911
Hawaiian Electric consolidated
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	$	18,884	$	19,461	$	21,550	See Note 10 for additional details
Impact of D&Os of the PUC included in regulatory assets	(199,936)		(171,345)		39,860		See Note 10 for additional details
Total reclassifications	$	(181,052)	$	(151,884)	$	61,410