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Cash flows (Tables) | 3 Months Ended
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Mar. 31, 2014
Supplemental Cash Flow Elements [Abstract] |
Schedule of supplemental disclosures of cash and noncash activity |
Three months ended March 31 |  | 2014 |  | 2013
(in millions) |  |  |  |
Supplemental disclosures of cash flow information |  |  |  |  |  |
HEI consolidated |  |  |  |
Interest paid to non-affiliates |  | $ | 20 |  |  | $ | 21 |
Income taxes paid/(refunded) |  | (18 | ) |  | (3 | )
Hawaiian Electric consolidated |  |  |  |
Interest paid |  | 13 |  |  | 14 |
Income taxes paid/(refunded) |  | (8 | ) |  | (26 | )
Supplemental disclosures of noncash activities |  |  |  |  |  |
HEI consolidated |  |  |  |
Common stock dividends reinvested in HEI common stock 1 |  | — |  |  | 6 |
Increases in common stock related to director and officer compensatory plans |  | 1 |  |  | — |
Real estate acquired in settlement of loans |  | 1 |  |  | 1 |
Obligations to fund low income housing investments |  | 10 |  |  | — |
HEI consolidated and Hawaiian Electric consolidated |  |  |  |
Additions to electric utility property, plant and equipment - unpaid invoices and other |  | 9 |  |  | 3 |
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. As of March 6, 2014, HEI began satisfying the share purchase requirements of the DRIP through open market purchases of its common stock rather than through new issuances.

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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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