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Net Interest Expense (Tables) | 12 Months Ended
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Dec. 31, 2017
Analysis of income and expense [abstract] |
Components of net interest expense | The components of net interest expense are as follows:
Year ended Dec. 31 | 2017 |  | 2016 |  | 2015 |
Interest on debt | 218 |  | 218 |  | 218 |
Interest income | (7 | ) | (2 | ) | (2 | )
Capitalized interest (Note 16) | (9 | ) | (16 | ) | (9 | )
Loss on redemption of bonds (Note 4(F)) | 6 |  | 1 |  | — |
Interest on finance lease obligations | 3 |  | 3 |  | 4 |
Credit facility fees, bank charges, and other interest | 18 |  | 19 |  | 10 |
Keephills 1 outage interest accruals (reversals) (Note 4) | — |  | (10 | ) | 9 |
Other | (3 | ) | (4 | ) | — |
Accretion of provisions (Note 20) | 21 |  | 20 |  | 21 |
Net interest expense | 247 |  | 229 |  | 251 |

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