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Segment disclosure (Narrative) (Details) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disclosure of operating segments [line items] |  |
Royalty, stream and other interest revenue | $ 224,877 | $ 213,630
North America from Canada [Member] |  |
Disclosure of operating segments [line items] |  |
Percentage of entity's revenue | 83.00% | 65.00%
Percentage of North America's net interests | 82.00% | 86.00%
One royalty interest [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interest revenue | $ 81,300 | $ 66,800
Percentage of entity's revenue | 41.00% | 43.00%
Precious metals [Member] |  |
Disclosure of operating segments [line items] |  |
Percentage of entity's revenue | 89.00% | 94.00%
Precious metals [Member] | Excluding offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Percentage of entity's revenue | 87.00% | 92.00%
Diamonds [Member] |  |
Disclosure of operating segments [line items] |  |
Percentage of entity's revenue | 9.00% | 4.00%
Diamonds [Member] | Excluding offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Percentage of entity's revenue | 11.00% | 6.00%

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