Condensed Consolidated Statements of Comprehensive Income (unaudited) - HECO - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Net income (loss) for common stock	$ 26,085		$ (1,295,484)		$ 52,756	$ (1,253,362)
Retirement benefit plans:
Adjustment for amortization of net gains recognized during the period in net periodic benefit cost, net of taxes of $(184), $(175), $(368) and $(351), respectively	(508)		(445)		(1,013)	(894)
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $167, $160, $335 and $319, respectively	484		459		967	918
Other comprehensive income (loss), net of taxes	(306)	$ (460)	1,594	$ (9,801)	(766)	(8,207)
Comprehensive income (loss) attributable to Hawaiian Electric Industries, Inc.	25,779		(1,293,890)		51,990	(1,261,569)
Hawaiian Electric Company, Inc. and Subsidiaries
Net income (loss) for common stock	39,150		(1,229,394)		86,966	(1,190,173)
Retirement benefit plans:
Adjustment for amortization of net gains recognized during the period in net periodic benefit cost, net of taxes of $(184), $(175), $(368) and $(351), respectively	(531)		(505)		(1,061)	(1,013)
Reclassification adjustment for impact of D&Os of the PUC included in regulatory assets, net of taxes of $167, $160, $335 and $319, respectively	484		459		967	918
Other comprehensive income (loss), net of taxes	(47)	$ (47)	(46)	$ (49)	(94)	(95)
Comprehensive income (loss) attributable to Hawaiian Electric Industries, Inc.	$ 39,103		$ (1,229,440)		$ 86,872	$ (1,190,268)