Shareholders' equity (Tables)

6 Months Ended

Jun. 30, 2019

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, 2018	$	(24,423	)	$	(436	)	$	(25,751	)	$	(50,610	)	$	99
Current period other comprehensive income (loss)	23,593			(1,063		)	410			22,940			47
Balance, June 30, 2019	$	(830	)	$	(1,499	)	$	(25,341	)	$	(27,670	)	$	146
Balance, December 31, 2017	$	(14,951	)	$	—		$	(26,990	)	$	(41,941	)	$	(1,219	)
Current period other comprehensive income (loss)	(17,645		)	—			1,047			(16,598		)	57
Balance, June 30, 2018	$	(32,596	)	$	—		$	(25,943	)	$	(58,539	)	$	(1,162	)

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

Reclassifications out of AOCI were as follows:

	Amount reclassified from AOCI
	Three months ended June 30						Six months ended June 30						Affected line item in the
(in thousands)	2019			2018			2019			2018			Statements of Income / Balance Sheets
HEI consolidated
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	$	2,503		$	5,350		$	5,006		$	10,496		See Note 9 for additional details
Impact of D&Os of the PUC included in regulatory assets	(2,298		)	(4,827		)	(4,596		)	(9,449		)	See Note 9 for additional details
Total reclassifications	$	205		$	523		$	410		$	1,047
Hawaiian Electric consolidated
Retirement benefit plans:
Amortization of prior service credit and net losses recognized during the period in net periodic benefit cost	$	2,321		$	4,853		$	4,643		$	9,506		See Note 9 for additional details
Impact of D&Os of the PUC included in regulatory assets	(2,298		)	(4,827		)	(4,596		)	(9,449		)	See Note 9 for additional details
Total reclassifications	$	23		$	26		$	47		$	57