v3.25.2

Goodwill (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Intangible assets and goodwill [Abstract] |
Disclosure of detailed information about key assumptions for the CGU's [Table Text Block] |
|  | 2025 |  |  | 2024 |
Long-term gold price (per ounce) |  | $3,327 |  |  | $2,184 |
Long-term silver price (per ounce) |  | $42 |  |  | $27 |
Post-tax real discount rate |  | 5.1% |  |  | 4.9% |

X
- References No definition available. + Details
Name: | ifrs-full_IntangibleAssetsAndGoodwillAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of detailed information about key assumptions for the CGU's + References No definition available. + Details
Name: | or_DislclosureOfDetailedInformationAboutKeyAssumptionsForCgusExplanatory
Namespace Prefix: | or_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration