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Contingencies (Details) |  | 12 Months Ended
--- | --- | ---
Jul. 11, 2016 | Dec. 31, 2019 USD ($) $ / pure shares tonne | Dec. 31, 2019 ARS ($) shares tonne | Dec. 31, 2018 USD ($)
Disclosure of contingent liabilities [line items] |  |  |  |
Provision for decommissioning, restoration and rehabilitation costs |  | $ 188,500,000 |  | $ 70,600,000
Number of shares issuable upon conversion of convertible debenture (shares) | shares |  | 363,854 | 363,854 |
Royalty expense |  | $ 26,721,000 |  | 20,673,000
Dolores mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Net Smelter Return Royalties, Silver Production, Percent |  | 2.00% | 2.00% |
Net Smelter Return Royalties, Gold Production, Percent |  | 3.25% | 3.25% |
Barrick Gold Corp. [Member] | Manantial Espejo mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Net Smelter Returns Royalty |  | 0.50% | 0.50% |
Royalty Expense Per Unit |  | $ 0.60 |  |
Production Cap for Royalty Charge | tonne |  | 1,000,000 | 1,000,000 |
EMUSA [Member] | San Vicente mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Royalty expense |  | $ 800,000 |  | 700,000
Net Smelter Return Royalties, Silver Production, Percent |  | 2.00% | 2.00% |
Minimum Average Price per Ounce of Silver to Trigger Royalty |  | $ 9.00 |  |
Royal Gold Inc. [Member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Royalty expense |  | $ 7,000,000 |  | $ 6,800,000
Maverix Metals Inc. [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Proportion of ownership interest in associate | 54.00% | 26.00% | 26.00% | 34.00%
Maverix Metals Inc. [member] | La Colorada mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Agreements to sell future gold production, percent of production (percent) |  | 100.00% | 100.00% |
Agreements to sell future gold production, price per ounce (in USD per ounce) |  | 650 |  |
Maverix Metals Inc. [member] | La Bolsa mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Agreements to sell future gold production, percent of production (percent) |  | 5.00% | 5.00% |
Agreements to sell future gold production, price per ounce (in USD per ounce) |  | 450 |  |
Agreements to Sell Future Silver Production, Price per Ounce |  | 450 |  |
Maverix Metals Inc. [member] | Pico Machay project [Member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Net Smelter Returns Royalty |  | 1.00% | 1.00% |
ARGENTINA |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Export Duty Amount |  | $ 3,500,000 |  | $ 1,600,000
AverageSpecial Export Duty, Percent |  | 6.00% | 6.00% | 8.00%
Export Duty, Percent |  | 12.00% | 12.00% |
Provincial Royalty, Operating Income, Percent |  | 3.00% | 3.00% |
ARGENTINA | ArgeninianGovernment [Member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
ARSExportDutyperUSDGoldExport |  |  | $ 4 |
ARSExportDutyperUSDSilverExport |  |  | $ 3 |
Province of Santa Cruz [Member] | Manantial Espejo mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Royalty, Operating Cash Flow, Percent |  | 3.00% | 3.00% |
BOLIVIA | San Vicente mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Royalty, Gross Metal Value of Sales, Silver, Percent |  | 6.00% | 6.00% |
BOLIVIA | Bolivian Government [Member] | San Vicente mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Royalty expense |  | $ 5,500,000 |  | $ 4,400,000
Royalty, Gross Metal Value of Sales, Zinc and Copper, Percent |  | 5.00% | 5.00% |
BOLIVIA | COMIBOL [Member] | San Vicente mine [member] |  |  |  |
Disclosure of contingent liabilities [line items] |  |  |  |
Royalty expense |  | $ 5,100,000 |  | $ 4,800,000
Participation Fee, as Percentage of Operation Cash Flow |  | 37.50% | 37.50% |
Increase (Decrease) in Participation Fee, as Percentage of Operation Cash Flows |  | (75.00%) | (75.00%) |

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