v3.25.2

Other investments (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |  | 12 Months Ended |
--- | --- | --- | ---
Oct. 31, 2025 | Dec. 31, 2025 | Dec. 31, 2024 | May 31, 2025
Mac Copper [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Percentage of interests acquired |  |  |  | 100.00%
Cash price per share |  |  |  | $ 12.25
Proceeds from disposal | $ 49.0 |  |  |
Shares disposed | 4 |  |  |
Note receivable [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Loan reclassified to investments |  |  | $ 12.2 |
Additional funds advanced |  | $ 1.6 |  |
Net book value of amended note |  | $ 14.1 |  |
Note interest rate |  | 8.00% |  |
Bank credit facility |  | $ 150.0 |  |

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