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Inventory (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure of inventories [Abstract] |
Schedule of Inventory |
| December 31, 2019 | December 31, 2018
In-process precious metals | $59.0 |  | $53.6 |
Ore in stockpiles | 33.4 |  | 35.4 |
Parts and supplies | 49.2 |  | 45.7 |
Dore, refined precious metals and gold in concentrate | 11.0 |  | 5.5 |
| 152.6 |  | 140.2 |
Less: Long-term inventory | (25.7 | ) | (30.0 | )
| $126.9 |  | $110.2 |

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