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Other Gain (Loss) | 12 Months Ended
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Dec. 31, 2017
Other Gain (Loss) [Abstract] |
Other (Loss) Gain |
14. | OTHER (LOSS) GAIN
Other (loss) gain recorded in net earnings (loss) for the years ended:
| December 31, | December 31,
| 2017 | 2016
Reduction of obligation to renounce flow-through exploration expenditures | $2.3 |  | $1.3 |
Unrealized (loss) gain on non-hedged derivatives | (0.3 | ) | 1.6 |
Fair value adjustment on prepayment option embedded derivative | — |  | 9.5 |
Loss on disposal of assets | (1.9 | ) | (4.6 | )
Interest income | 2.5 |  | 2.1 |
Transaction costs related to the Richmont acquisition (note 5) | (3.8 | ) | — |
Share-based compensation related of replacement awards related to Richmont (note 5) | (1.3 | ) | — |
Other | 1.9 |  | (2.3 | )
| ($0.6 | ) | $7.6 |

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