Consolidated Statements of Comprehensive Income - HECO - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income for common stock	$ 246,166	$ 197,824	$ 217,882
Retirement benefit plans:
Net gains (losses) arising during the period, net of taxes of $52,554, $(21,868) and $1,821 for 2021, 2020 and 2019, respectively	153,121	(60,529)	10,914
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, net of taxes of $6,750, $7,474 and $3,312 for 2021, 2020 and 2019, respectively	19,253	23,689	10,107
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $(59,429), $13,825, and $(5,610) for 2021, 2020 and 2019, respectively	(171,345)	39,860	(16,177)
Other comprehensive loss, net of tax benefits	(51,269)	18,775	30,571
Comprehensive income	194,897	216,599	248,453
Hawaiian Electric Company, Inc. and Subsidiaries
Net income for common stock	177,642	169,340	156,840
Retirement benefit plans:
Net gains (losses) arising during the period, net of taxes of $52,554, $(21,868) and $1,821 for 2021, 2020 and 2019, respectively	151,523	(63,050)	5,249
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, net of taxes of $6,750, $7,474 and $3,312 for 2021, 2020 and 2019, respectively	19,461	21,550	9,550
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $(59,429), $13,825, and $(5,610) for 2021, 2020 and 2019, respectively	(171,345)	39,860	(16,177)
Other comprehensive loss, net of tax benefits	(361)	(1,640)	(1,378)
Comprehensive income	$ 177,281	$ 167,700	$ 155,462