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Unconsolidated variable interest entities Tables (Tables) | 12 Months Ended
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Dec. 31, 2014
Variable Interest Entity, Not Primary Beneficiary, Disclosures [Abstract] |
Schedule of purchases from independent power producers | Purchases from all IPPs were as follows:
Years ended December 31 |  | 2014 |  | 2013 |  | 2012
(in millions) |  |  |  |  |  |
AES Hawaii |  | $ | 145 |  |  | $ | 134 |  |  | $ | 146 |
Kalaeloa |  | 279 |  |  | 301 |  |  | 310 |
HEP |  | 51 |  |  | 51 |  |  | 65 |
HPOWER |  | 66 |  |  | 61 |  |  | 65 |
Other IPPs |  | 181 |  |  | 164 |  |  | 138 |
Total IPPs |  | $ | 722 |  |  | $ | 711 |  |  | $ | 724 |

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