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v3.20.4

Amounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract] |
Schedule of Receivables |
| December 31, 2020 | December 31, 2019
Sales tax receivables |  |
Canada | $5.4 |  | $8.9 |
Mexico | 17.7 |  | 18.1 |
Other | 4.0 |  | 5.7 |
Other receivables | 7.6 |  | 4.7 |
| $34.7 |  | $37.4 |

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