Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Total revenues	$ 642,946	$ 677,186
Expenses
Total expenses	544,915	617,484
Operating income (loss)
Total operating income	98,031	59,702
Retirement defined benefits credit (expense)—other than service costs	2,435	(934)
Interest expense, net—other than on deposit liabilities and other bank borrowings	(23,736)	(21,775)
Allowance for borrowed funds used during construction	747	688
Allowance for equity funds used during construction	2,191	2,015
Gain on sale of investment securities, net	528	0
Income before income taxes	80,196	39,696
Income taxes	15,365	5,803
Net income	64,831	33,893
Preferred stock dividends of subsidiaries	473	473
Net income for common stock	$ 64,358	$ 33,420
Basic earnings per common share (in dollars per share)	$ 0.59	$ 0.31
Diluted earnings per common share (in dollars per share)	$ 0.59	$ 0.31
Weighted-average number of common shares outstanding (in shares)	109,221	109,051
Net effect of potentially dilutive shares (in shares)	271	314
Weighted-average shares assuming dilution (in shares)	109,492	109,365
Electric utility
Revenues
Total revenues	$ 564,864	$ 597,442
Expenses
Total expenses	495,750	553,484
Operating income (loss)
Total operating income	69,114	43,958
Income before income taxes	55,090	29,686
Income taxes	11,233	5,282
Net income	43,857	24,404
Preferred stock dividends of subsidiaries	499	499
Net income for common stock	43,358	23,905
Bank
Revenues
Total revenues	77,131	79,738
Expenses
Total expenses	41,835	60,335
Operating income (loss)
Total operating income	35,296	19,403
Income before income taxes	37,102	18,969
Income taxes	7,546	3,208
Net income	29,556	15,761
Preferred stock dividends of subsidiaries	0	0
Net income for common stock	29,556	15,761
Other
Revenues
Total revenues	951	6
Expenses
Total expenses	7,330	3,665
Operating income (loss)
Total operating income	(6,379)	(3,659)
Income before income taxes	(11,996)	(8,959)
Income taxes	(3,414)	(2,687)
Net income	(8,582)	(6,272)
Preferred stock dividends of subsidiaries	(26)	(26)
Net income for common stock	(8,556)	(6,246)
Hawaiian Electric Company, Inc. and Subsidiaries
Revenues
Total revenues	564,864	597,442
Expenses
Fuel oil	127,427	173,221
Purchased power	142,296	139,816
Other operation and maintenance	114,570	127,547
Depreciation	57,355	55,850
Taxes, other than income taxes	54,102	57,050
Total expenses	495,750	553,484
Operating income (loss)
Total operating income	69,114	43,958
Retirement defined benefits credit (expense)—other than service costs	1,021	(381)
Interest expense and other charges, net	(17,983)	(16,594)
Allowance for borrowed funds used during construction	747	688
Allowance for equity funds used during construction	2,191	2,015
Income before income taxes	55,090	29,686
Income taxes	11,233	5,282
Net income	43,857	24,404
Preferred stock dividends of subsidiaries	229	229
Net income attributable to Hawaiian Electric	43,628	24,175
Preferred stock dividends of Hawaiian Electric	270	270
Net income for common stock	$ 43,358	$ 23,905