Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income	$ 148,756,000	$ 153,036,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	178,674,000	172,307,000
Other amortization	39,580,000	35,553,000
Provision for credit losses	39,504,000	17,873,000
Loans originated, held for sale	(380,864,000)	(190,700,000)
Proceeds from sale of loans, held for sale	387,247,000	177,345,000
Gain on sale of investment securities, net	(9,275,000)	(653,000)
Gain on sale of loans	(15,933,000)	(3,080,000)
Deferred income taxes	(14,464,000)	265,000
Bad debt expense	1,401,000	1,650,000
Share-based compensation expense	5,449,000	8,142,000
Allowance for equity funds used during construction	(6,556,000)	(9,335,000)
Other	(4,773,000)	(6,157,000)
Changes in assets and liabilities
Decrease in accounts receivable and unbilled revenues, net	11,252,000	10,723,000
Decrease (increase) in fuel oil stock	31,899,000	(3,438,000)
Decrease in regulatory assets	10,012,000	54,274,000
Increase (decrease) in regulatory liabilities	(15,755,000)	2,494,000
Increase (decrease) in accounts, interest and dividends payable	(20,794,000)	215,000
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	(32,750,000)	(32,436,000)
Decrease in defined benefit pension and other postretirement benefit plans liability	(1,398,000)	(2,794,000)
Change in other assets and liabilities	(37,543,000)	(42,206,000)
Net cash provided by operating activities	312,268,000	341,428,000
Cash flows from investing activities
Available-for-sale investment securities purchased	(985,874,000)	(4,823,000)
Principal repayments on available-for-sale investment securities	331,238,000	194,845,000
Proceeds from sale of available-for-sale investment securities	169,157,000	19,810,000
Principal repayments of held-to-maturity investment securities	34,740,000	9,183,000
Purchases of held-to-maturity investment securities	(28,602,000)	0
Purchase of stock from Federal Home Loan Bank	(24,006,000)	(80,475,000)
Redemption of stock from Federal Home Loan Bank	21,520,000	80,480,000
Net increase in loans held for investment	(374,307,000)	(258,064,000)
Proceeds from sale of low-income housing investments	6,725,000	0
Capital expenditures	(296,172,000)	(332,273,000)
Contributions to low income housing investments	(3,951,000)	(5,612,000)
Other	4,899,000	3,495,000
Net cash used in investing activities	(1,144,633,000)	(373,434,000)
Cash flows from financing activities
Net increase in deposit liabilities	766,235,000	37,371,000
Net increase (decrease) in short-term borrowings with original maturities of three months or less	(112,710,000)	64,844,000
Net increase in other bank borrowings with original maturities of three months or less	6,765,000	19,150,000
Proceeds from issuance of short-term debt	165,000,000	25,000,000
Repayment of short-term debt	(100,000,000)	0
Proceeds from issuance of other bank borrowings	30,000,000	0
Proceeds from issuance of long-term debt	365,146,000	208,970,000
Repayment of long-term debt and funds transferred for repayment of long-term debt	(178,291,000)	(204,278,000)
Withheld shares for employee taxes on vested share-based compensation	(5,700,000)	(997,000)
Common stock dividends	(108,066,000)	(104,591,000)
Preferred stock dividends of subsidiaries	(1,417,000)	(1,417,000)
Other	(7,275,000)	(4,266,000)
Net cash provided by financing activities	819,687,000	39,786,000
Net increase (decrease) in cash, cash equivalents and restricted cash	(12,678,000)	7,780,000
Cash, cash equivalents and restricted cash, beginning of period	227,685,000	169,208,000
Cash, cash equivalents and restricted cash, end of period	215,007,000	176,988,000
Less: Restricted cash	(21,881,000)	0
Cash and cash equivalents, end of period	193,126,000	176,988,000
Hawaiian Electric Company, Inc. and Subsidiaries
Cash flows from operating activities
Net income	127,795,000	112,975,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	167,235,000	161,795,000
Other amortization	24,929,000	21,476,000
Deferred income taxes	(9,827,000)	(1,386,000)
State refundable credit	(7,589,000)	(6,242,000)
Allowance for equity funds used during construction	(6,556,000)	(9,335,000)
Other	1,614,000	613,000
Changes in assets and liabilities
Decrease in accounts receivable	7,076,000	12,706,000
Decrease (increase) in accrued unbilled revenues	9,842,000	(2,101,000)
Decrease (increase) in fuel oil stock	31,494,000	(4,608,000)
Increase in materials and supplies	(8,092,000)	(5,606,000)
Decrease in regulatory assets	10,012,000	54,274,000
Increase (decrease) in regulatory liabilities	(15,755,000)	2,494,000
Decrease in accounts payable	(34,874,000)	(9,261,000)
Change in prepaid and accrued income taxes, tax credits and utility revenue taxes	(34,768,000)	(32,094,000)
Decrease in defined benefit pension and other postretirement benefit plans liability	(3,064,000)	(2,837,000)
Change in other assets and liabilities	(15,918,000)	(11,895,000)
Net cash provided by operating activities	244,955,000	282,618,000
Cash flows from investing activities
Capital expenditures	(267,482,000)	(297,807,000)
Other	7,295,000	2,662,000
Net cash used in investing activities	(260,187,000)	(295,145,000)
Cash flows from financing activities
Net increase (decrease) in short-term borrowings with original maturities of three months or less	100,000,000	25,000,000
Net increase in other bank borrowings with original maturities of three months or less	(38,987,000)	62,353,000
Proceeds from issuance of short-term debt	100,000,000	25,000,000
Repayment of short-term debt	(100,000,000)	0
Proceeds from issuance of long-term debt	255,000,000	200,000,000
Repayment of long-term debt and funds transferred for repayment of long-term debt	(109,000,000)	(201,546,000)
Common stock dividends	(80,352,000)	(75,939,000)
Preferred stock dividends of Hawaiian Electric and subsidiaries	(1,496,000)	(1,496,000)
Other	(1,569,000)	785,000
Net cash provided by financing activities	23,596,000	9,157,000
Net increase (decrease) in cash, cash equivalents and restricted cash	8,364,000	(3,370,000)
Cash, cash equivalents and restricted cash, beginning of period	41,894,000	35,877,000
Cash, cash equivalents and restricted cash, end of period	50,258,000	32,507,000
Less: Restricted cash	(20,458,000)	0
Cash and cash equivalents, end of period	$ 29,800,000	$ 32,507,000