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Other (Loss) Gain (Tables) | 12 Months Ended
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Dec. 31, 2019
Other Gain (Loss) [Abstract] |
Schedule of Other Nonoperating Income (Expense) | Other gain (loss) recorded in net earnings (loss) for the years ended:
| December 31, | December 31,
| 2019 | 2018
Reduction of obligation to renounce flow-through exploration expenditures | $0.6 |  | $0.6 |
Unrealized loss on non-hedging derivatives | (0.6 | ) | (0.4 | )
Loss on disposal of assets | (0.7 | ) | (6.1 | )
Gain on Sale of non-core royalties (i) | 8.0 |  | — |
Other | (2.2 | ) | (2.5 | )
| $5.1 |  | ($8.4 | )
(i) Sale of non-core royalties

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- Definition Schedule of Other Nonoperating Income (Expense)1 [Table Text Block] + References No definition available. + Details
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