Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues
Revenues	$ 1,042,197	$ 756,904	$ 2,722,872	$ 2,080,107
Expenses
Total expenses	940,082	659,588	2,434,813	1,782,904
Operating income (loss)
Total operating income	102,115	97,316	288,059	297,203
Retirement defined benefits credit—other than service costs	1,039	1,058	3,528	4,709
Interest expense, net—other than on deposit liabilities and other bank borrowings	(26,626)	(23,477)	(75,940)	(70,530)
Allowance for borrowed funds used during construction	825	827	2,401	2,386
Allowance for equity funds used during construction	2,552	2,427	7,431	6,995
Gain on sales of investment securities, net and equity-method investment	0	0	8,123	528
Income before income taxes	79,905	78,151	233,602	241,291
Income taxes	17,352	14,265	48,395	48,229
Net income attributable to Hawaiian Electric	62,553	63,886	185,207	193,062
Preferred stock dividends of subsidiaries	471	471	1,417	1,417
Net income for common stock	$ 62,082	$ 63,415	$ 183,790	$ 191,645
Basic earnings per common share (in dollars per share)	$ 0.57	$ 0.58	$ 1.68	$ 1.75
Diluted earnings per common share (in dollars per share)	$ 0.57	$ 0.58	$ 1.68	$ 1.75
Weighted-average number of common shares outstanding (in shares)	109,470	109,311	109,421	109,272
Net effect of potentially dilutive shares (in shares)	235	264	291	316
Weighted-average shares assuming dilution (in shares)	109,705	109,575	109,712	109,588
Electric utility
Revenues
Revenues	$ 955,971	$ 679,499	$ 2,483,636	$ 1,846,242
Expenses
Total expenses	876,922	604,307	2,259,838	1,634,252
Operating income (loss)
Total operating income	79,049	75,192	223,798	211,990
Income before income taxes	63,712	61,175	179,771	170,163
Income taxes	13,450	10,335	37,967	33,066
Net income attributable to Hawaiian Electric	50,262	50,840	141,804	137,097
Preferred stock dividends of subsidiaries	498	498	1,496	1,496
Net income for common stock	49,764	50,342	140,308	135,601
Bank
Revenues
Revenues	81,411	76,208	231,850	230,599
Expenses
Total expenses	54,311	51,151	152,797	130,440
Operating income (loss)
Total operating income	27,100	25,057	79,053	100,159
Income before income taxes	27,281	25,241	79,605	102,335
Income taxes	6,525	5,976	17,513	23,230
Net income attributable to Hawaiian Electric	20,756	19,265	62,092	79,105
Preferred stock dividends of subsidiaries	0	0	0	0
Net income for common stock	20,756	19,265	62,092	79,105
Other
Revenues
Revenues	4,815	1,197	7,386	3,266
Expenses
Total expenses	8,849	4,130	22,178	18,212
Operating income (loss)
Total operating income	(4,034)	(2,933)	(14,792)	(14,946)
Income before income taxes	(11,088)	(8,265)	(25,774)	(31,207)
Income taxes	(2,623)	(2,046)	(7,085)	(8,067)
Net income attributable to Hawaiian Electric	(8,465)	(6,219)	(18,689)	(23,140)
Preferred stock dividends of subsidiaries	(27)	(27)	(79)	(79)
Net income for common stock	$ (8,438)	$ (6,192)	$ (18,610)	$ (23,061)