Condensed Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues
Total revenues	$ 673,185	$ 646,055	$ 1,897,028	$ 1,763,259
Expenses
Purchased power	161,000	158,000	441,000	413,000
Total expenses	563,640	540,613	1,643,725	1,503,511
Operating income (loss)
Total operating income	109,545	105,442	253,303	259,748
Merger termination fee	0	90,000	0	90,000
Interest expense, net—other than on deposit liabilities and other bank borrowings	(19,227)	(19,365)	(59,235)	(56,792)
Allowance for borrowed funds used during construction	1,339	854	3,371	2,276
Allowance for equity funds used during construction	3,482	2,274	8,908	6,010
Income before income taxes	95,139	179,205	206,347	301,242
Income taxes	34,595	51,592	72,003	96,203
Net income	60,544	127,613	134,344	205,039
Preferred stock dividends of subsidiaries	471	471	1,417	1,417
Net income for common stock	$ 60,073	$ 127,142	$ 132,927	$ 203,622
Basic earnings per common share (in dollars per share)	$ 0.55	$ 1.17	$ 1.22	$ 1.89
Diluted earnings per common share (in dollars per share)	0.55	1.17	1.22	1.88
Dividends declared per common share (in dollars per share)	$ 0.31000	$ 0.31	$ 0.93	$ 0.93
Weighted-average number of common shares outstanding (in shares)	108,786	108,268	108,737	107,951
Net effect of potentially dilutive shares (in shares)	79	204	172	220
Weighted-average shares assuming dilution (in shares)	108,865	108,472	108,909	108,171
Hawaiian Electric Company, Inc. and Subsidiaries
Revenues
Total revenues	$ 598,769	$ 572,253	$ 1,674,255	$ 1,549,700
Expenses
Fuel oil	146,258	128,624	431,787	334,263
Purchased power	160,347	157,750	440,538	412,667
Other operation and maintenance	100,102	94,789	306,716	298,260
Depreciation	48,206	46,759	144,578	140,300
Taxes, other than income taxes	56,780	54,519	159,575	148,386
Total expenses	511,693	482,441	1,483,194	1,333,876
Operating income (loss)
Total operating income	87,076	89,812	191,061	215,824
Allowance for borrowed funds used during construction	1,339	854	3,371	2,276
Allowance for equity funds used during construction	3,482	2,274	8,908	6,010
Interest expense and other charges, net	(16,907)	(17,323)	(52,625)	(49,734)
Income before income taxes	74,990	75,617	150,715	174,376
Income taxes	27,005	28,145	54,623	64,682
Net income	47,985	47,472	96,092	109,694
Preferred stock dividends of subsidiaries	228	228	686	686
Net income attributable to Hawaiian Electric	47,757	47,244	95,406	109,008
Preferred stock dividends of Hawaiian Electric	270	270	810	810
Net income for common stock	47,487	46,974	94,596	108,198
Electric utility
Revenues
Total revenues	598,769	572,253	1,674,255	1,549,700
Expenses
Total expenses	511,693	482,441	1,483,194	1,333,876
Operating income (loss)
Total operating income	87,076	89,812	191,061	215,824
Income before income taxes	74,990	75,617	150,715	174,376
Income taxes	27,005	28,145	54,623	64,682
Net income	47,985	47,472	96,092	109,694
Preferred stock dividends of subsidiaries	498	498	1,496	1,496
Net income for common stock	47,487	46,974	94,596	108,198
Bank
Revenues
Total revenues	74,289	73,708	222,474	213,297
Expenses
Total expenses	47,525	50,981	146,754	150,752
Operating income (loss)
Total operating income	26,764	22,727	75,720	62,545
Income before income taxes	26,764	22,727	75,720	62,545
Income taxes	9,172	7,623	25,582	21,483
Net income	17,592	15,104	50,138	41,062
Preferred stock dividends of subsidiaries	0	0	0	0
Net income for common stock	17,592	15,104	50,138	41,062
Other
Revenues
Total revenues	127	94	299	262
Expenses
Total expenses	4,422	7,191	13,777	18,883
Operating income (loss)
Total operating income	(4,295)	(7,097)	(13,478)	(18,621)
Income before income taxes	(6,615)	80,861	(20,088)	64,321
Income taxes	(1,582)	15,824	(8,202)	10,038
Net income	(5,033)	65,037	(11,886)	54,283
Preferred stock dividends of subsidiaries	(27)	(27)	(79)	(79)
Net income for common stock	$ (5,006)	$ 65,064	$ (11,807)	$ 54,362