Shareholders' equity (Tables)

9 Months Ended

Sep. 30, 2020

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, 2019	$	2,481	$	(1,613)	$	(20,907)	$	(20,039)	$	(1,279)
Current period other comprehensive income (loss)	19,767		(2,129)		1,682		19,320		99
Balance, September 30, 2020	$	22,248	$	(3,742)	$	(19,225)	$	(719)	$	(1,180)
Balance, December 31, 2018	$	(24,423)	$	(436)	$	(25,751)	$	(50,610)	$	99
Current period other comprehensive income (loss)	27,368		(1,663)		532		26,237		73
Balance, September 30, 2019	$	2,945	$	(2,099)	$	(25,219)	$	(24,373)	$	172

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

Reclassifications out of AOCI were as follows:

	Amount reclassified from AOCI
	Three months ended September 30				Nine months ended September 30				Affected line item in the  Statements of Income / Balance Sheets
(in thousands)	2020		2019		2020		2019
HEI consolidated
Net realized gains on securities included in net income	$	—	$	(478)	$	(1,638)	$	(478)	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	6,324		2,615		17,720		7,621		See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets	(5,721)		(2,493)		(16,038)		(7,089)		See Note 8 for additional details
Total reclassifications	$	603	$	(356)	$	44	$	54
Hawaiian Electric consolidated
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	$	5,769	$	2,519	$	16,137	$	7,162	See Note 8 for additional details
Impact of D&Os of the PUC included in regulatory assets	(5,721)		(2,493)		(16,038)		(7,089)		See Note 8 for additional details
Total reclassifications	$	48	$	26	$	99	$	73