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SEGMENTED INFORMATION - Significant customers (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Segmented Information |  |
Metal sales | $ 3,497.3 | $ 3,212.6
Percentage of total metal sales | 36.30% | 49.60%
Customer 1 |  |
Segmented Information |  |
Metal sales | $ 517.3 | $ 505.1
Customer 2 |  |
Segmented Information |  |
Metal sales | 397.8 | 376.3
Customer 3 |  |
Segmented Information |  |
Metal sales | 355.0 | 360.8
Customer 4 |  |
Segmented Information |  |
Metal sales |  | 351.9
Fort Knox |  |
Segmented Information |  |
Metal sales | 279.6 | 325.5
Fort Knox | Customer 1 |  |
Segmented Information |  |
Metal sales | 11.3 | 38.4
Fort Knox | Customer 2 |  |
Segmented Information |  |
Metal sales | 31.5 |
Fort Knox | Customer 3 |  |
Segmented Information |  |
Metal sales | 24.2 | 56.1
Fort Knox | Customer 4 |  |
Segmented Information |  |
Metal sales |  | 17.5
Round Mountain |  |
Segmented Information |  |
Metal sales | 502.2 | 483.9
Round Mountain | Customer 1 |  |
Segmented Information |  |
Metal sales | 56.3 | 96.2
Round Mountain | Customer 2 |  |
Segmented Information |  |
Metal sales | 49.0 |
Round Mountain | Customer 3 |  |
Segmented Information |  |
Metal sales | 14.5 | 38.8
Round Mountain | Customer 4 |  |
Segmented Information |  |
Metal sales |  | 5.6
Bald Mountain |  |
Segmented Information |  |
Metal sales | 249.2 | 403.9
Bald Mountain | Customer 1 |  |
Segmented Information |  |
Metal sales | 17.0 | 70.4
Bald Mountain | Customer 2 |  |
Segmented Information |  |
Metal sales | 40.4 |
Bald Mountain | Customer 3 |  |
Segmented Information |  |
Metal sales | 16.7 | 19.8
Bald Mountain | Customer 4 |  |
Segmented Information |  |
Metal sales |  | 3.6
Paracatu |  |
Segmented Information |  |
Metal sales | 856.3 | 663.1
Paracatu | Customer 1 |  |
Segmented Information |  |
Metal sales | 59.4 | 46.2
Paracatu | Customer 2 |  |
Segmented Information |  |
Metal sales | 76.8 |
Paracatu | Customer 3 |  |
Segmented Information |  |
Metal sales | 181.1 | 75.3
Paracatu | Customer 4 |  |
Segmented Information |  |
Metal sales |  | 186.4
Maricunga |  |
Segmented Information |  |
Metal sales | 61.2 | 113.6
Maricunga | Customer 1 |  |
Segmented Information |  |
Metal sales | 0.7 | 18.1
Maricunga | Customer 2 |  |
Segmented Information |  |
Metal sales | 8.0 |
Maricunga | Customer 3 |  |
Segmented Information |  |
Metal sales | 4.1 | 38.7
Maricunga | Customer 4 |  |
Segmented Information |  |
Metal sales |  | 5.5
Kupol |  |
Segmented Information |  |
Metal sales | 734.4 | 627.7
Kupol | Customer 1 |  |
Segmented Information |  |
Metal sales | 145.4 |
Kupol | Customer 2 |  |
Segmented Information |  |
Metal sales | 55.8 | 376.3
Tasiast |  |
Segmented Information |  |
Metal sales | 532.8 | 307.8
Tasiast | Customer 1 |  |
Segmented Information |  |
Metal sales | 175.5 | 119.4
Tasiast | Customer 2 |  |
Segmented Information |  |
Metal sales | 78.5 |
Tasiast | Customer 3 |  |
Segmented Information |  |
Metal sales | 66.6 | 75.5
Tasiast | Customer 4 |  |
Segmented Information |  |
Metal sales |  | 62.0
Chirano |  |
Segmented Information |  |
Metal sales | 281.6 | 286.0
Chirano | Customer 1 |  |
Segmented Information |  |
Metal sales | 51.7 | 116.4
Chirano | Customer 2 |  |
Segmented Information |  |
Metal sales | 57.8 |
Chirano | Customer 3 |  |
Segmented Information |  |
Metal sales | $ 47.8 | 56.6
Chirano | Customer 4 |  |
Segmented Information |  |
Metal sales |  | $ 71.3

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