Basis of presentation (Tables)

9 Months Ended

Sep. 30, 2015

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Change in Accounting Estimate

The table below illustrates the effects of the revisions on the previously filed financial statements:

	As previously			As
(in thousands)	filed			revised			Difference
Nine months ended September 30, 2014
Consolidated Statements of Cash Flows
HEI consolidated
Cash flows from operating activities
Other amortization	$	5,454		$	5,081		$	(373	)
Increase in deferred income taxes (1)	49,270			50,296			1,026
Share-based compensation expense	—			7,200			7,200
Decrease in accounts, interest and dividends payable	(75,812		)	(51,199		)	24,613
Change in other assets and liabilities (1)	(47,760		)	(56,326		)	(8,566		)
Net cash provided by operating activities	173,410			197,310			23,900
Cash flows from investing activities
Capital expenditures	(236,003		)	(260,616		)	(24,613		)
Cash flows from investing activities-Other	(39		)	674			713
Net cash used in investing activities	(376,992		)	(400,892		)	(23,900		)
Hawaiian Electric consolidated
Cash flows from operating activities
Other amortization	4,662			4,289			(373		)
Decrease in accounts payable	(77,893		)	(53,280		)	24,613
Change in other assets and liabilities	(41,629		)	(41,969		)	(340		)
Net cash provided by operating activities	146,267			170,167			23,900
Cash flows from investing activities
Capital expenditures	(229,105		)	(253,718		)	(24,613		)
Cash flows from investing activities-Other	—			713			713
Net cash used in investing activities	(207,365		)	(231,265		)	(23,900		)
Note 10
HEI consolidated and Hawaiian Electric consolidated
Additions to electric utility property, plant and equipment - unpaid invoices and accruals (investing) (in millions)	40			15			(25		)

(1) As previously filed and adjusted by ASU No. 2014-01 (see Note 11).