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Accounts Payable and Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
Subclassifications of assets, liabilities and equities [abstract] |
Schedule of Accounts Payable and Accrued Liabilities |
| December 31, 2017 | December 31, 2016
Trade accounts payable and accrued liabilities | $87.3 |  | $75.6 |
Royalties payable | 4.9 |  | 3.6 |
Interest payable | — |  | 6.1 |
Share-based compensation liability | 4.5 |  | 6.8 |
Derivative liabilities (note 17) | 0.1 |  | 2.4 |
|  | $96.8 |  |  | $94.5 |

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