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INTEREST EXPENSE (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Analysis of income and expense [abstract] |
Disclosure of interest expense |
US$ MILLIONS |  | 2017 |  | 2016 |  | 2015
Interest on corporate facility |  | $ | 12 |  |  | $ | 12 |  |  | $ | 5 |
Interest on corporate debt |  | 51 |  |  | 39 |  |  | 22 |
Interest on non-recourse borrowings |  | 361 |  |  | 338 |  |  | 334 |
Other financing fees |  | 4 |  |  | 3 |  |  | 6 |
|  | $ | 428 |  |  | $ | 392 |  |  | $ | 367 |

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