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Net Interest Expense (Tables) | 12 Months Ended
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Dec. 31, 2018
Analysis of income and expense [abstract] |
Components of net interest expense | The components of net interest expense are as follows:
Year ended Dec. 31 | 2018 |  | 2017 |  | 2016 |
Interest on debt | 184 |  | 218 |  | 218 |
Interest income | (11 | ) | (7 | ) | (2 | )
Capitalized interest (Note 17) | (2 | ) | (9 | ) | (16 | )
Loss on redemption of bonds (Note 22) | 24 |  | 6 |  | 1 |
Interest on finance lease obligations | 3 |  | 3 |  | 3 |
Credit facility fees, bank charges and other interest | 13 |  | 18 |  | 19 |
Keephills 1 outage interest (reversals) (Note 4(P)) | — |  | — |  | (10 | )
Other(1) | 15 |  | (3 | ) | (4 | )
Accretion of provisions (Note 21) | 24 |  | 21 |  | 20 |
Net interest expense | 250 |  | 247 |  | 229 |
(1) During 2018, approximately $5 million of costs were expensed due to project-level financing that is no longer practicable and approximately $7 million for the significant financing component required under IFRS 15 (see Note 3).

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