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Fair Value Measurements - Narrative (Details) |  | 1 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Oct. 27, 2021 USD ($) royalty $ / oz | May 31, 2023 USD ($) | Sep. 30, 2023 USD ($) $ / oz | Sep. 18, 2022 USD ($) oz
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Contingent consideration asset fair value disclosure |  |  | $ 13,000,000 |
Cash consideration |  | $ 7,000,000 |  |
Deferred consideration |  | 1,000,000 |  |
Loss on sale |  | 12,300,000 |  |
Fair value of cash consideration |  | $ 800,000 |  |
Measurement Input, Silver Price Volatility |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Disposal group, consideration, measurement input |  |  | 0.335 |
Measurement Input, Gold Price Volatility |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Disposal group, consideration, measurement input |  |  | 0.190 |
Measurement Input, Weighted Average Cost of Capital |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Disposal group, consideration, measurement input |  |  | 0.155 |
Minimum |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assumed silver price (US Dollars per ounce) | $ / oz |  |  | 22 |
Assumed gold price (US Dollars per ounce) | $ / oz |  |  | 1,700 |
Contingent Consideration Asset, Measurement Input |  |  | 5 years |
Maximum |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Assumed silver price (US Dollars per ounce) | $ / oz |  |  | 25 |
Assumed gold price (US Dollars per ounce) | $ / oz |  |  | 1,930 |
Contingent Consideration Asset, Measurement Input |  |  | 30 years |
Fair Value, Nonrecurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Royalties receivable fair value disclosure | $ 11,200,000 |  |  |
Contingent consideration asset fair value disclosure | $ 1,200,000 |  |  |
Discontinued Operations, Disposed of by Sale | La Preciosa [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Disposal group, including discontinued operation, contingent consideration, payments per silver equivalent | $ / oz | 0.25 |  |  |
Disposal Group, Including Discontinued Operation, Number Of Royalties Disposed Of | royalty | 2 |  |  |
Disposal Group, Including Discontinued Operation, Contingent Consideration, Maximum | $ 50,000,000 |  |  |
Held-for-sale | AngloGold Ashanti |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Contingent consideration liability |  |  |  | $ 50,000,000
Gold ounces threshold for contingent consideration | oz |  |  |  | 3,500,000
Held-for-sale | AngloGold Ashanti | Measurement Input, Discount Rate |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Disposal group, consideration, measurement input |  |  |  | 0.081
Gloria And Abundancia | Discontinued Operations, Disposed of by Sale | La Preciosa [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Discontinued operation, consideration, royalties on properties | 1.25% |  |  |
Areas Other Than Gloria And Abundancia | Discontinued Operations, Disposed of by Sale | La Preciosa [Member] |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Discontinued operation, consideration, royalties on properties | 2.00% |  |  |

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