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Cash flows
 12 Months Ended
Dec. 31, 2017
Supplemental Cash Flow Elements [Abstract]  
Cash flows
11 · Cash flows
Years ended December 31
2017

 
2016

 
2015

(in millions)
 
 
 
 
 
Supplemental disclosures of cash flow information
 

 
 

 
 

HEI consolidated
 
 
 
 
 
Interest paid to non-affiliates
$
83

 
$
84

 
$
83

Income taxes paid (including refundable credits)
55

 
55

 
75

Income taxes refunded (including refundable credits)
1

 
45

 
55

Hawaiian Electric consolidated
 
 
 
 
 
Interest paid to non-affiliates
63

 
62

 
61

Income taxes paid (including refundable credits)
26

 
1

 
13

Income taxes refunded (including refundable credits)
—

 
20

 
12

Supplemental disclosures of noncash activities
 

 
 

 
 

HEI consolidated
 
 
 
 
 
Property, plant and equipment
 
 
 
 
 
Unpaid invoices and accruals for capital expenditures,
 
 
 
 
 
balance, end of period (investing)
38

 
84

 
70

Common stock dividends reinvested in HEI common stock (financing) 1
—

 
17

 
—

Loans transferred from held for investment to held for sale (investing)
41

 
24

 
—

Real estate acquired in settlement of loans (investing)
—

 
1

 
1

Real estate transferred from property, plant and equipment to other assets held-for-sale (investing)
—

 
1

 
5

Common stock issued (gross) for director and executive/management compensation (financing)2
11

 
7

 
10

Obligations to fund low income housing investments, net (investing)
13

 
—

 
—

Hawaiian Electric consolidated
 
 
 
 
 
Electric utility property, plant and equipment
 

 
 

 
 

Unpaid invoices and accruals for capital expenditures,
 
 
 
 
 
balance, end of period (investing)
38

 
84

 
70

HEI Consolidated and Hawaiian Electric consolidated
 
 
 
 
 
Electric utility property, plant and equipment
 
 
 
 
 
Estimated fair value of noncash contributions in aid of construction (investing)
18

 
28

 
3

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.
2 The amounts shown represent the market value of common stock issued for director and executive/management compensation and withheld to satisfy statutory tax liabilities.