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Cash flows (Tables) | 6 Months Ended
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Jun. 30, 2017
Supplemental Cash Flow Elements [Abstract] |
Schedule of supplemental disclosures of cash and noncash activity |
Six months ended June 30 |  | 2017 |  | 2016
(in millions) |  |  |  |
Supplemental disclosures of cash flow information |  |  |  |  |  |
HEI consolidated |  |  |  |
Interest paid to non-affiliates |  | $ | 46 |  |  | $ | 43 |
Income taxes paid (including refundable credits) |  | 21 |  |  | 14 |
Income taxes refunded (including refundable credits) |  | — |  |  | 45 |
Hawaiian Electric consolidated |  |  |  |
Interest paid to non-affiliates |  | 36 |  |  | 31 |
Income taxes paid (including refundable credits) |  | 8 |  |  | — |
Income taxes refunded (including refundable credits) |  | — |  |  | 20 |
Supplemental disclosures of noncash activities |  |  |  |  |  |
HEI consolidated |  |  |  |
Common stock dividends reinvested in HEI common stock (financing)1 |  | — |  |  | 11 |
Loans transferred from held for investment to held for sale (investing) |  | 9 |  |  | — |
Common stock issued (gross) for director and executive/management compensation (financing)2 |  | 11 |  |  | 6 |
HEI consolidated and Hawaiian Electric consolidated |  |  |  |
Electric utility property, plant and equipment |  |  |  |
Estimated fair value of noncash contributions in aid of construction (investing) |  | 2 |  |  | 8 |
Change in unpaid invoices and accruals for capital expenditures (investing) |  | (7 | ) |  | (32 | )
1 The amounts shown represent common stock dividends reinvested in HEI common stock under the HEI Dividend Reinvestment and Stock Purchase Plan (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.

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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- References No definition available. + Details
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