Early Deposit Mineral Stream Interests - Summary of Early Deposit Mineral Stream Interests (Detail) - USD ($) $ in Thousands |
6 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
Aug. 08, 2012 |
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| Disclosure Of Mineral Stream Interests [line items] | |||||||||||
| Upfront Consideration Paid to Date | $ 46,352 | [1] | $ 46,352 | [1] | $ 455,000 | ||||||
| Upfront Consideration to be Paid | [1],[2] | 322,000 | 322,000 | ||||||||
| Total Upfront Consideration | [1] | $ 368,352 | $ 368,352 | ||||||||
| Toroparu [member] | |||||||||||
| Disclosure Of Mineral Stream Interests [line items] | |||||||||||
| Name of mine owner | Aris Mining | Aris Mining | |||||||||
| Location of Mine | Guyana | Guyana | |||||||||
| Upfront Consideration Paid to Date | [1] | $ 15,500 | $ 15,500 | ||||||||
| Upfront Consideration to be Paid | [1],[2] | 138,000 | 138,000 | ||||||||
| Total Upfront Consideration | [1] | $ 153,500 | $ 153,500 | ||||||||
| Gold | 10.00% | 10.00% | |||||||||
| Silver | 50.00% | 50.00% | |||||||||
| Term of Agreement | Life of Mine | Life of Mine | |||||||||
| Cotabambas [member] | |||||||||||
| Disclosure Of Mineral Stream Interests [line items] | |||||||||||
| Name of mine owner | Panoro | Panoro | |||||||||
| Location of Mine | Peru | Peru | |||||||||
| Upfront Consideration Paid to Date | [1] | $ 14,000 | $ 14,000 | ||||||||
| Upfront Consideration to be Paid | [1],[2] | 126,000 | 126,000 | ||||||||
| Total Upfront Consideration | [1] | $ 140,000 | $ 140,000 | ||||||||
| Gold | [3] | 25.00% | 25.00% | ||||||||
| Silver | [3] | 100.00% | 100.00% | ||||||||
| Term of Agreement | Life of Mine | Life of Mine | |||||||||
| Kutcho [member] | |||||||||||
| Disclosure Of Mineral Stream Interests [line items] | |||||||||||
| Name of mine owner | Kutcho | Kutcho | |||||||||
| Location of Mine | Canada | Canada | |||||||||
| Upfront Consideration Paid to Date | [1] | $ 16,852 | $ 16,852 | ||||||||
| Upfront Consideration to be Paid | [1],[2] | 58,000 | 58,000 | ||||||||
| Total Upfront Consideration | [1] | $ 74,852 | $ 74,852 | ||||||||
| Gold | 100.00% | 100.00% | |||||||||
| Silver | 100.00% | 100.00% | |||||||||
| Term of Agreement | Life of Mine | Life of Mine | |||||||||
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