Shareholders' equity (Tables)

6 Months Ended

Jun. 30, 2021

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, 2020	$	19,986	$	(3,363)	$	(17,887)	$	(1,264)	$	(2,919)
Current period other comprehensive income (loss)	(28,801)		861		396		(27,544)		69
Balance, June 30, 2021	$	(8,815)	$	(2,502)	$	(17,491)	$	(28,808)	$	(2,850)
Balance, December 31, 2019	$	2,481	$	(1,613)	$	(20,907)	$	(20,039)	$	(1,279)
Current period other comprehensive income (loss)	18,783		(1,982)		1,079		17,880		51
Balance, June 30, 2020	$	21,264	$	(3,595)	$	(19,828)	$	(2,159)	$	(1,228)

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 June 30				Six months ended June 30
	2021		2020		2021		2020
(in thousands)
HEI consolidated
Net realized gains on securities included in net income	$	—	$	(1,638)	$	(387)	$	(1,638)	Gain on sale of investment securities, net
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	6,008		5,690		12,018		11,396		See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets	(5,811)		(5,159)		(11,622)		(10,317)		See Note 8 for additional details
Total reclassifications	$	197	$	(1,107)	$	9	$	(559)
Hawaiian Electric consolidated
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	$	5,846	$	5,184	$	11,691	$	10,368	See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets	(5,811)		(5,159)		(11,622)		(10,317)		See Note 8 for additional details
Total reclassifications	$	35	$	25	$	69	$	51