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Significant accounting policies - Disclosure of geographic locations, related participation and principal operating segment (Details) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Osisko Development Corp [Member] |  |
Significant Accounting Policies [Line Items] |  |
Participation | 75.10% | 84.10%
Osisko Bermuda Limited [Member] |  |
Significant Accounting Policies [Line Items] |  |
Participation | 100.00% |
Osisko Mining (USA) Inc. [Member] |  |
Significant Accounting Policies [Line Items] |  |
Participation | 100.00% |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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