Shareholders' equity (Tables)

6 Months Ended

Jun. 30, 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)	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)

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 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