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Segment disclosure - Disclosure of detailed information about geographic net assets (Details) - CAD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | $ 1,378,253 | $ 1,154,801
Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 879,075 | 703,014
Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 484,590 | 438,131
Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 14,588 | 13,656
North America [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 890,502 | 780,962
North America [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 664,985 | 595,931
North America [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 225,517 | 185,031
North America [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 0 | 0
South America [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 335,405 | 231,446
South America [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 157,552 | 57,673
South America [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 177,853 | 173,773
South America [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 0 | 0
Australia [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 26,917 | 22,702
Australia [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 17,345 | 13,742
Australia [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 0 | 0
Australia [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 9,572 | 8,960
Africa [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 24,228 | 20,453
Africa [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 24,228 | 20,453
Africa [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 0 | 0
Africa [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 0 | 0
Asia [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 35,219 | 32,968
Asia [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 0 | 0
Asia [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 30,203 | 28,272
Asia [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 5,016 | 4,696
Europe [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 65,982 | 66,270
Europe [Member] | Royalties [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 14,965 | 15,215
Europe [Member] | Streams [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | 51,017 | 51,055
Europe [Member] | Offtakes [Member] |  |
Disclosure of operating segments [line items] |  |
Royalty, stream and other interests | $ 0 | $ 0

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