Cash flows (Tables)

12 Months Ended

Dec. 31, 2015

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental disclosures of cash and noncash activity

Years ended December 31	2015		2014		2013
(in millions)
Supplemental disclosures of cash flow information
HEI consolidated
Interest paid to non-affiliates	$	83	$	84	$	85
Income taxes paid	75		47		18
Income taxes refunded	55		24		4
Hawaiian Electric consolidated
Interest paid to non-affiliates	61		61		59
Income taxes paid	13		6		6
Income taxes refunded	12		8		32
Supplemental disclosures of noncash activities
HEI consolidated
Property, plant and equipment-unpaid invoices and accruals (investing)	5		43		(12		)
Common stock dividends reinvested in HEI common stock (financing) 1	—		—		24
Loans transferred from held for investment to held for sale (investing to operating)	—		—		25
Real estate acquired in settlement of loans (investing)	1		3		4
Real estate transferred from property, plant and equipment to other assets held-for-sale (investing)	5		—		—
Obligations to fund low income housing investments, net (operating)	4		14		1
Hawaiian Electric consolidated
Electric utility property, plant and equipment
AFUDC-equity (operating)	7		7		6
Estimated fair value of noncash contributions in aid of construction (investing)	3		3		5
Unpaid invoices and accruals (investing)	5		40		(12		)
Refinancing of long-term debt (financing)	47		—		—

¹  The amounts shown represents common stock dividends reinvested in HEI common stock under the HEI DRIP in noncash transactions.