Summary of significant accounting policies (Tables)

12 Months Ended

Dec. 31, 2015

Accounting Policies [Abstract]

Schedule of future minimum lease payments

HEI's consolidated and the Utilities' future minimum lease payments are as follows:

(in millions)	HEI		Hawaiian Electric
2016	$	11	$	5
2017	10		4
2018	7		3
2019	6		2
2020	4		2
Thereafter	10		6
	$	48	$	22

Schedule of earnings per share basic and diluted under two-class method

Under the two-class method of computing EPS, HEI's EPS was comprised as follows for both participating securities (i.e., restricted shares that became fully vested in the fourth quarter of 2014) and unrestricted common stock:

	2014				2013
	Basic		Diluted		Basic		Diluted
Distributed earnings	$	1.24	$	1.24	$	1.24	$	1.24
Undistributed earnings	0.41		0.39		0.39		0.38
	$	1.65	$	1.63	$	1.63	$	1.62

Schedule of New Accounting Pronouncements and Changes in Accounting Principles

The table below summarizes the impact to prior period financial statements of the retrospective adoption of ASU No. 2014-01:

	HEI Consolidated												ASB
(in thousands)	As previously  filed			Adjust-ment  from adoption of ASU No. 2014-01			Reclassi-fications			As currently reported			As previously  filed		Adjust-ment from adoption of ASU No. 2014-01			As currently reported
HEI Consolidated Income Statements/ASB Statements of Income Data
Year ended December 31, 2014
Bank expenses/Noninterest expense	$	176,878		$	(3,676	)				$	173,202		$	159,944	$	(3,676	)	$	156,268
Bank operating income/Income before income taxes	75,619			3,676						79,295			75,619		3,676			79,295
Income taxes	91,712			3,867						95,579			24,127		3,867			27,994
Net income for common stock/Net income	168,320			(191		)				168,129			51,492		(191		)	51,301
Year ended December 31, 2013
Bank expenses/Noninterest expense	171,090			(2,089		)				169,001			159,504		(2,089		)	157,415
Bank operating income/Income before income taxes	87,057			2,089						89,146			87,059		2,089			89,148
Income taxes	84,341			1,896						86,237			29,525		1,896			31,421
Net income for common stock/Net income	161,516			193						161,709			57,534		193			57,727
HEI Consolidated Balance Sheet/ASB Balance Sheet Data
December 31, 2014
Other assets	541,542			981						542,523			304,435		981			305,416
Total assets and Total liabilities and shareholders’ equity	11,184,161			981						11,185,142			5,565,241		981			5,566,222
Deferred income taxes/Other liabilities	631,734			1,836						633,570			116,527		1,836			118,363
Total liabilities	9,358,440			1,836						9,360,276			5,030,598		1,836			5,032,434
Retained earnings	297,509			(855		)				296,654			212,789		(855		)	211,934
Total shareholders’ equity	1,791,428			(855		)				1,790,573			534,643		(855		)	533,788
HEI Consolidated Statements of Changes in Stockholders’ Equity
December 31, 2013
Retained earnings	255,694			(664		)				255,030
Total shareholders’ equity	1,727,070			(664		)				1,726,406
December 31, 2012
Retained earnings	216,804			(857		)				215,947
Total shareholders’ equity	1,593,865			(857		)				1,593,008
HEI Consolidated Statements of Cash Flows
Year ended December 31, 2014
Net income	170,210			(191		)				170,019
Increase in deferred income taxes	103,916			310						104,226
Change in other assets and liabilities	(94,966		)	(119		)	$	(6,111	)	(101,196		)
Year ended December 31, 2013
Net income	163,406			193						163,599
Increase in deferred income taxes	80,399			(254		)				80,145
Change in other assets and liabilities	(11,696		)	61			(2,657		)	(14,292		)

The table below summarizes the impact to the prior period financial statements of the adoption of ASU No. 2015-17:

(in thousands)	As previously  filed		Adjustment from adoption of ASU No. 2015-17			As currently reported
December 31, 2014
Hawaiian Electric Consolidated Balance Sheet
Prepayments and other	$	66,383	$	(32,915	)	$	33,468
Total current assets	615,003		(32,915		)	582,088
Total assets and Total capitalization and liabilities	5,590,457		(32,915		)	5,557,542
Other current liabilities	65,146		(3,482		)	61,664
Total current liabilities	502,430		(3,482		)	498,948
Deferred income taxes	602,872		(29,433		)	573,439
Total deferred credits and other liabilities	1,698,612		(29,433		)	1,669,179
Note 4 - Hawaiian Electric Consolidating Balance Sheet
Hawaiian Electric (parent only)
Prepayments and other	44,680		(24,449		)	20,231
Total current assets	463,929		(24,449		)	439,480
Total assets and Total liabilities and shareholders’ equity	4,396,815		(24,449		)	4,372,366
Other current liabilities	48,282		(2,913		)	45,369
Total current liabilities	362,652		(2,913		)	359,739
Deferred income taxes	429,515		(21,536		)	407,979
Total deferred credits and other liabilities	1,215,441		(21,536		)	1,193,905
Hawaii Electric Light
Prepayments and other	8,611		1,526			10,137
Total current assets	77,561		1,526			79,087
Total assets and Total liabilities and shareholders’ equity	924,885		1,526			926,411
Other current liabilities	9,866		(279		)	9,587
Total current liabilities	85,631		(279		)	85,352
Deferred income taxes	90,119		1,805			91,924
Total deferred credits and other liabilities	265,993		1,805			267,798
Maui Electric
Prepayments and other	13,567		(9,992		)	3,575
Total current assets	98,911		(9,992		)	88,919
Total assets and Total liabilities and shareholders’ equity	832,977		(9,992		)	822,985
Other current liabilities	16,094		(290		)	15,804
Total current liabilities	79,646		(290		)	79,356
Deferred income taxes	83,238		(9,702		)	73,536
Total deferred credits and other liabilities	217,421		(9,702		)	207,719
December 31, 2013
Note 3 - Hawaiian Electric Consolidated assets	5,087,129		(20,702		)	5,066,427

Summary Of Amounts In Income Tax Expense, Affordable Housing Projects

The table below summarizes the amounts in income tax expense related to ASB's investments in qualifying affordable housing projects:

Years ended December 31	2015			2014			2013
(in millions)
Amounts in income taxes related to investments in qualifying affordable housing projects
Amortization recognized in the provision for income taxes	$	(5.4	)	$	(3.6	)	$	(2.2	)
Tax credits and other tax benefits recognized in the provision for income taxes	8.0			5.4			3.6
Net benefit to income tax expense	$	2.6		$	1.8		$	1.4