Investments in associates - Disclosure of associates (Details) - USD ($) $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
Aug. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2024 |
Sep. 30, 2024 |
Sep. 30, 2023 |
|
| Disclosure of associates [line items] | |||||
| Current assets | $ 147,684 | $ 63,814 | |||
| Current liabilities | (32,632) | (14,616) | |||
| Revenues | 277,370 | 191,157 | |||
| Other comprehensive income | 93,345 | (57,822) | |||
| Comprehensive loss | $ 299,433 | $ (41,555) | |||
| Osisko Development Corp. [Member] | |||||
| Disclosure of associates [line items] | |||||
| Current assets | $ 42,949 | ||||
| Non-current assets | 525,269 | ||||
| Current liabilities | (90,842) | ||||
| Non-current liabilities | (85,590) | ||||
| Net assets | 391,786 | $ 538,570 | |||
| Revenues | 8,421 | ||||
| Net loss | (153,087) | ||||
| Other comprehensive income | $ 1,100 | 1,440 | |||
| Comprehensive loss | $ (151,647) | ||||
| X | ||||||||||
- Definition The amount of change in equity resulting from transactions and other events, other than those changes resulting from transactions with owners in their capacity as owners. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of assets that the entity (a) expects to realise or intends to sell or consume in its normal operating cycle; (b) holds primarily for the purpose of trading; (c) expects to realise within twelve months after the reporting period; or (d) classifies as cash or cash equivalents (as defined in IAS 7) unless the asset is restricted from being exchanged or used to settle a liability for at least twelve months after the reporting period. [Refer: Assets] Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of liabilities that: (a) the entity expects to settle in its normal operating cycle; (b) the entity holds primarily for the purpose of trading; (c) are due to be settled within twelve months after the reporting period; or (d) the entity does not have the right at the end of the reporting period to defer settlement for at least twelve months after the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
|
| X | ||||||||||
- Definition The amount of assets less the amount of liabilities. Reference 1: http://www.xbrl.org/2003/role/exampleRef
|
| X | ||||||||||
- Definition The amount of assets that do not meet the definition of current assets. [Refer: Current assets] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The amount of liabilities that do not meet the definition of current liabilities. [Refer: Current liabilities] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition The profit (loss) from continuing operations. [Refer: Continuing operations, unless line item indicates otherwise [member]; Profit (loss)] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|