Condensed Consolidated Statements of Comprehensive Income (unaudited) - HECO - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Net income for common stock	$ 62,082	$ 52,541	$ 69,167	$ 63,415	$ 63,872	$ 64,358	$ 183,790	$ 191,645
Retirement benefit plans:
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, net of taxes of $1,943, $985, $3,549 and $5,155, respectively	5,606			2,853			10,229	14,871
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $(1,839), $(971), $(3,320) and $(5,002), respectively	(5,303)			(2,799)			(9,572)	(14,421)
Other comprehensive loss, net of taxes	(96,012)	(87,840)	(117,159)	(11,305)	16,472	(44,016)	(301,011)	(38,849)
Comprehensive income (loss) attributable to Hawaiian Electric Industries, Inc.	(33,930)			52,110			(117,221)	152,796
Hawaiian Electric Company, Inc. and Subsidiaries
Net income for common stock	49,764	44,135	46,409	50,342	41,901	43,358	140,308	135,601
Retirement benefit plans:
Adjustment for amortization of prior service credit and net losses recognized during the period in net periodic benefit cost, net of taxes of $1,943, $985, $3,549 and $5,155, respectively	5,411			2,905			9,782	14,596
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $(1,839), $(971), $(3,320) and $(5,002), respectively	(5,303)			(2,799)			(9,572)	(14,421)
Other comprehensive loss, net of taxes	108	$ 51	$ 51	106	$ 35	$ 34	210	175
Comprehensive income (loss) attributable to Hawaiian Electric Industries, Inc.	$ 49,872			$ 50,448			$ 140,518	$ 135,776