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Cash flows
 3 Months Ended
Mar. 31, 2018
Supplemental Cash Flow Elements [Abstract]  
Cash flows
Cash flows
Three months ended March 31
 
2018
 
2017
(in millions)
 
 
 
 
Supplemental disclosures of cash flow information
 
 

 
 

HEI consolidated
 
 
 
 
Interest paid to non-affiliates
 
$
19

 
$
19

Income taxes paid (including refundable credits)
 
3

 
4

Hawaiian Electric consolidated
 
 
 
 
Interest paid to non-affiliates
 
12

 
13

Income taxes paid (including refundable credits)
 
5

 
2

Supplemental disclosures of noncash activities
 
 

 
 

HEI consolidated
 
 
 
 
Property, plant and equipment
 
 
 
 
Estimated fair value of noncash contributions in aid of construction (investing)
 
3

 
—

Unpaid invoices and accruals for capital expenditures, balance, end of period (investing)
 
48

 
27

Loans transferred from held for investment to held for sale (investing)
 
1

 
9

Common stock issued (gross) for director and executive/management compensation (financing)1
 
3

 
9

Transfer of retail repurchase agreements to deposit liabilities (financing)
 
102

 
—

Hawaiian Electric consolidated
 
 
 
 
Electric utility property, plant and equipment
 
 
 
 
Estimated fair value of noncash contributions in aid of construction (investing)
 
3

 
—

Unpaid invoices and accruals for capital expenditures, balance, end of period (investing)
 
29

 
26


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