Shareholders' equity (Tables)

3 Months Ended

Mar. 31, 2022

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, 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)
Balance, December 31, 2020	$	19,986	$	(3,363)	$	(17,887)	$	(1,264)	$	(2,919)
Current period other comprehensive income (loss)	(45,777)		1,562		199		(44,016)		34
Balance, March 31, 2021	$	(25,791)	$	(1,801)	$	(17,688)	$	(45,280)	$	(2,885)

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)		2022		2021
HEI consolidated
Net realized gains on securities included in net income		$	—	$	(387)	Gain on sale of investment securities, net
Net realized losses on derivatives qualifying as cash flow hedges		55		—		Interest expense
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost		4,501		6,010		See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets		(4,325)		(5,811)		See Note 8 for additional details
Total reclassifications		$	231	$	(188)
Hawaiian Electric consolidated
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost		$	4,376	$	5,845	See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets		(4,325)		(5,811)		See Note 8 for additional details
Total reclassifications		$	51	$	34