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Royalty, stream and working interests - Key assumptions and sensitivity analysis (Details) - Streams - Mine Waste Solutions | Dec. 31, 2020 USD ($)
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Royalty, stream and working interests |
Change in discount rate assumption for impairment analysis (as a percent) | 5.00%
Gold prices discount rate (as a percent) | 10.00%
Discount Rate increase (Percentage) | 1.00%
Discount Rate decrease (Percentage) | 1.00%
2021 |
Royalty, stream and working interests |
Gold price (US$/ounce) | $ 1,910
2022 |
Royalty, stream and working interests |
Gold price (US$/ounce) | 1,886
2023 |
Royalty, stream and working interests |
Gold price (US$/ounce) | 1,831
2024 |
Royalty, stream and working interests |
Gold price (US$/ounce) | $ 1,681

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