Consolidated Statements of Income - HECO - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues	$ 2,850,379	$ 2,579,775	$ 2,873,948
Expenses
Total expenses	2,464,313	2,268,282	2,525,927
Operating income	386,066	311,493	348,021
Allowance for equity funds used during construction	9,534	8,768	11,987
Retirement defined benefits credit (expense)—other than service costs	5,848	(3,210)	(2,806)
Allowance for borrowed funds used during construction	3,250	2,992	4,453
Income before income taxes	310,863	240,624	271,409
Income taxes	62,807	40,910	51,637
Net income (loss)	248,056	199,714	219,772
Preferred stock dividends of subsidiaries	1,890	1,890	1,890
Net income for common stock	246,166	197,824	217,882
Hawaiian Electric Company, Inc. and Subsidiaries
Revenues	2,539,636	2,265,320	2,545,942
Expenses
Fuel oil	644,349	515,274	720,709
Purchased power	670,494	568,749	633,256
Other operation and maintenance	475,412	474,192	481,737
Depreciation	229,469	222,733	215,731
Taxes, other than income taxes	240,354	215,822	240,131
Total expenses	2,260,078	1,996,770	2,291,564
Operating income	279,558	268,550	254,378
Allowance for equity funds used during construction	9,534	8,768	11,987
Retirement defined benefits credit (expense)—other than service costs	3,890	(763)	(2,836)
Interest expense and other charges, net	(72,447)	(67,794)	(70,842)
Allowance for borrowed funds used during construction	3,250	2,992	4,453
Income before income taxes	223,785	211,753	197,140
Income taxes	44,148	40,418	38,305
Net income (loss)	179,637	171,335	158,835
Preferred stock dividends of subsidiaries	915	915	915
Net income attributable to Hawaiian Electric	178,722	170,420	157,920
Preferred stock dividends of Hawaiian Electric	1,080	1,080	1,080
Net income for common stock	$ 177,642	$ 169,340	$ 156,840