Condensed Consolidated Statements of Income (unaudited) - HECO - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenues
Revenues	$ 938,383			$ 901,873			$ 2,732,901	$ 2,725,795
Expenses
Total expenses	1,064,931			826,762			4,502,005	2,464,187
Total operating income (loss)	(126,548)			75,111			(1,769,104)	261,608
Allowance for equity funds used during construction	3,300			4,000			10,276	11,073
Retirement defined benefits credit—other than service costs	1,106			1,256			3,669	3,561
Allowance for borrowed funds used during construction	1,331			1,372			4,061	3,798
Interest income	3,662			0			9,929	0
Income (loss) before income taxes	(149,234)			49,110			(1,837,245)	188,781
Income tax expense (benefit)	(45,303)			7,521			(480,898)	36,915
Net income (loss)	(103,931)			41,589			(1,356,347)	151,866
Preferred stock dividends of Hawaiian Electric	471			471			1,417	1,417
Net income (loss) for common stock	(104,402)	$ (1,295,484)	$ 42,122	41,118	$ 54,610	$ 54,721	(1,357,764)	150,449
Hawaiian Electric Company, Inc. and Subsidiaries
Revenues
Revenues	829,617			794,987			2,410,526	2,419,539
Expenses
Fuel oil	279,038			267,438			821,986	881,692
Purchased power	189,165			177,795			530,310	498,990
Other operation and maintenance	162,197			142,508			453,648	407,184
Wildfire tort-related claims	163,000			0			1,875,000	0
Depreciation	62,812			61,165			188,436	182,781
Taxes, other than income taxes	77,969			74,723			226,795	228,034
Total expenses	934,181			723,629			4,096,175	2,198,681
Total operating income (loss)	(104,564)			71,358			(1,685,649)	220,858
Allowance for equity funds used during construction	3,300			4,000			10,276	11,073
Retirement defined benefits credit—other than service costs	959			1,132			3,103	3,227
Interest expense and other charges, net	(20,223)			(22,447)			(61,625)	(63,565)
Allowance for borrowed funds used during construction	1,331			1,372			4,061	3,798
Interest income	1,671			0			4,555	0
Income (loss) before income taxes	(117,526)			55,415			(1,725,279)	175,391
Income tax expense (benefit)	(35,439)			11,456			(454,017)	38,126
Net income (loss)	(82,087)			43,959			(1,271,262)	137,265
Preferred stock dividends of subsidiaries	228			228			686	686
Net income (loss)	(82,315)			43,731			(1,271,948)	136,579
Preferred stock dividends of Hawaiian Electric	270			270			810	810
Net income (loss) for common stock	$ (82,585)	$ (1,229,394)	$ 39,221	$ 43,461	$ 45,299	$ 47,009	$ (1,272,758)	$ 135,769