Condensed Consolidated Statements of Income (unaudited) - HECO - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Revenues	$ 901,873			$ 1,042,197			$ 2,725,795	$ 2,722,872
Expenses
Total expenses	826,762			940,082			2,464,187	2,434,813
Total operating income	75,111			102,115			261,608	288,059
Allowance for equity funds used during construction	4,000			2,552			11,073	7,431
Retirement defined benefits credit—other than service costs	1,256			1,039			3,561	3,528
Allowance for borrowed funds used during construction	1,372			825			3,798	2,401
Income (loss) before income taxes	49,110			79,905			188,781	233,602
Income taxes	7,521			17,352			36,915	48,395
Net income (loss)	41,589			62,553			151,866	185,207
Preferred stock dividends of Hawaiian Electric	471			471			1,417	1,417
Net income for common stock	41,118	$ 54,610	$ 54,721	62,082	$ 52,541	$ 69,167	150,449	183,790
Hawaiian Electric Company, Inc. and Subsidiaries
Revenues
Revenues	794,987			955,971			2,419,539	2,483,636
Expenses
Fuel oil	267,438			383,602			881,692	874,543
Purchased power	177,795			225,209			498,990	606,827
Other operation and maintenance	142,508			121,110			407,184	371,259
Depreciation	61,165			58,711			182,781	175,921
Taxes, other than income taxes	74,723			88,290			228,034	231,288
Total expenses	723,629			876,922			2,198,681	2,259,838
Total operating income	71,358			79,049			220,858	223,798
Allowance for equity funds used during construction	4,000			2,552			11,073	7,431
Retirement defined benefits credit—other than service costs	1,132			895			3,227	2,876
Interest expense and other charges, net	(22,447)			(19,609)			(63,565)	(56,735)
Allowance for borrowed funds used during construction	1,372			825			3,798	2,401
Income (loss) before income taxes	55,415			63,712			175,391	179,771
Income taxes	11,456			13,450			38,126	37,967
Net income	43,959			50,262			137,265	141,804
Preferred stock dividends of subsidiaries	228			228			686	686
Net income (loss)	43,731			50,034			136,579	141,118
Preferred stock dividends of Hawaiian Electric	270			270			810	810
Net income for common stock	$ 43,461	$ 45,299	$ 47,009	$ 49,764	$ 44,135	$ 46,409	$ 135,769	$ 140,308