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Other expense (Tables) | 12 Months Ended
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Dec. 31, 2018
Analysis of income and expense [abstract] |
Schedule of other expense |
FOR THE YEAR ENDED DECEMBER 31 | NOTE | 2018 |  | 2017 |
Impairment of assets | 15, | 16 | (200 | ) | (82 | )
Net mark-to-market (losses) gains on derivatives used to economically hedge equity settled share-based compensation plans (1) |  |  | (80 | ) | 76 |
Equity losses from investments in associates and joint ventures |  | 17 |  |
| Loss on investment |  |  | (20 | ) | (22 | )
| Operations |  |  | (15 | ) | (9 | )
Loss on investments |  |  | (34 | ) | (5 | )
Early debt redemption costs |  | 22 | (20 | ) | (20 | )
Gains (losses) on retirements and disposals of property, plant and equipment and intangible assets |  |  | 11 |  | (47 | )
Other (1) |  |  | 10 |  | 7 |
Total other expense |  |  | (348 | ) | (102 | )
(1) We have reclassified amounts from the previous period to make them consistent with the presentation for the current period.

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