Consolidated Statements of Cash Flows - HECO (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities
Net income	$ 126,239	$ 105,422
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation of property, plant and equipment	112,946	111,516
Other amortization	4,811	14,552
Change in deferred income taxes	82,582	60,957
Allowance for equity funds used during construction	(5,548)	(4,131)
Change in cash overdraft		(2,688)
Changes in assets and liabilities
Increase in fuel oil stock	(31,372)	(4,592)
Change in prepaid and accrued income taxes and utility revenue taxes	(5,121)	40,418
Contributions to defined benefit pension and other postretirement benefit plans	(64,006)	(56,395)
Change in other assets and liabilities	(70,406)	(30,863)
Net cash provided by operating activities	121,604	101,089
Cash flows from investing activities
Capital expenditures	(225,961)	(148,107)
Contributions in aid of construction	33,106	15,106
Other	865	(2,923)
Net cash used in investing activities	(297,249)	(169,702)
Cash flows from financing activities
Common stock dividends	(71,966)	(77,070)
Proceeds from issuance of long-term debt	457,000	125,000
Repayment of long-term debt	(368,500)	(150,000)
Net increase in short-term borrowings from nonaffiliates and affiliate with original maturities of three months or less	13,398	26,272
Other	(6,314)	(4,283)
Net cash provided by (used in) financing activities	73,892	21,445
Net increase (decrease) in cash and cash equivalents	(101,753)	(47,168)
Hawaiian Electric Company, Inc. and Subsidiaries
Cash flows from operating activities
Net income	96,547	75,668
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation of property, plant and equipment	108,556	107,673
Other amortization	4,074	12,694
Change in deferred income taxes	82,717	51,120
Change in tax credits, net	3,642	1,416
Allowance for equity funds used during construction	(5,548)	(4,131)
Change in cash overdraft		(2,688)
Changes in assets and liabilities
Increase in accounts receivable	(36,907)	(42,966)
Decrease (increase) in accrued unbilled revenues	5,736	(33,503)
Increase in fuel oil stock	(31,372)	(4,592)
Increase in materials and supplies	(7,305)	(5,280)
Increase in regulatory assets	(57,793)	(34,231)
Decrease in accounts payable	(3,481)	(59,526)
Change in prepaid and accrued income taxes and utility revenue taxes	(20,665)	44,498
Contributions to defined benefit pension and other postretirement benefit plans	(62,417)	(55,235)
Change in other assets and liabilities	4,228	9,551
Net cash provided by operating activities	80,012	60,468
Cash flows from investing activities
Capital expenditures	(220,970)	(142,734)
Contributions in aid of construction	33,106	15,106
Other		77
Net cash used in investing activities	(187,864)	(127,551)
Cash flows from financing activities
Common stock dividends	(54,783)	(52,919)
Preferred stock dividends of HECO and subsidiaries	(1,496)	(1,496)
Proceeds from issuance of long-term debt	457,000
Repayment of long-term debt	(368,500)
Net increase in short-term borrowings from nonaffiliates and affiliate with original maturities of three months or less	44,719	12,498
Other	(2,172)	(67)
Net cash provided by (used in) financing activities	74,768	(41,984)
Net increase (decrease) in cash and cash equivalents	(33,084)	(109,067)
Cash and cash equivalents, beginning of period	48,806	122,936
Cash and cash equivalents, end of period	$ 15,722	$ 13,869