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Other (Loss) Gain (Tables) | 12 Months Ended
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Dec. 31, 2021
Other Gain (Loss) [Abstract] |
Schedule of Other Nonoperating Income (Expense) | Other loss recorded in net (loss) earnings for the years ended:
| December 31, | December 31,
| 2021 | 2020
Unrealized gain on non-hedging derivatives | $0.4 |  | $0.7 |
Loss on disposal of assets | (1.5) |  | (1.0) |
Severance costs related to Turkish Projects | (0.9) |  | — |
Turkish Projects holding costs and arbitration costs | (1.6) |  | — |
Reduction of obligation to renounce flow-through exploration expenditures | — |  | 1.0 |
Gain on sale of non-core royalties | — |  | 0.6 |
Other | (3.6) |  | (5.0) |
| ($7.2) |  | ($3.7) |

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