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Cash flows (Tables) | 12 Months Ended
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Dec. 31, 2014
Supplemental Cash Flow Elements [Abstract] |
Schedule of supplemental disclosures of cash and noncash activity |
Years ended December 31 | 2014 |  |  | 2013 |  |  | 2012 |
(in millions) |  |  |  |  |
Supplemental disclosures of cash flow information |  |  |  |  |  |  |  |
HEI consolidated |  |  |  |  |
Interest paid to non-affiliates | $ | 84 |  |  | $ | 85 |  |  | $ | 84 |
Income taxes paid | 47 |  |  | 18 |  |  | 17 |
Income taxes refunded | 24 |  |  | 4 |  |  | 31 |
Hawaiian Electric consolidated |  |  |  |  |
Interest paid to non-affiliates | 61 |  |  | 59 |  |  | 57 |
Income taxes paid | 6 |  |  | 6 |  |  | 6 |
Income taxes refunded | 8 |  |  | 32 |  |  | 9 |
Supplemental disclosures of noncash activities |  |  |  |  |  |  |  |
HEI consolidated |  |  |  |  |
Property, plant and equipment-unpaid invoices and other | 68 |  |  | 24 |  |  | 37 |
Common stock dividends reinvested in HEI common stock 1 | — |  |  | 24 |  |  | 24 |
Increases in common stock related to director and officer compensatory plans | 6 |  |  | 5 |  |  | 6 |
Loans transferred from held for investment to held for sale | — |  |  | 25 |  |  | — |
Real estate acquired in settlement of loans | 3 |  |  | 4 |  |  | 11 |
Obligations to fund low income housing investments, net | 14 |  |  | 1 |  |  | — |
Hawaiian Electric consolidated |  |  |  |  |
Electric utility property, plant and equipment |  |  |  |  |  |  |  |
AFUDC-equity | 7 |  |  | 6 |  |  | 7 |
Estimated fair value of noncash contributions in aid of construction | 3 |  |  | 5 |  |  | 10 |
Unpaid invoices and other | 65 |  |  | 24 |  |  | 37 |
1 | The amounts shown represents common stock dividends reinvested in HEI common stock under the HEI DRIP in noncash transactions.

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