Deferred revenue (Narrative) (Details) $ in Millions |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2025
USD ($)
$ / OZ
|
Dec. 31, 2024
USD ($)
$ / OZ
|
|
| Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
| Amortization of deferred revenue - variable consideration adjustments - prior periods | $ | $ 9.9 | $ (3.8) |
| Variable consideration adjustment - increase (decrease) of finance expense | $ | $ (0.6) | $ 0.2 |
| Peru Stream Agreement [Member] | ||
| Disclosure of disaggregation of revenue from contracts with customers [line items] | ||
| Drawdown rate for gold | $ / OZ | 860 | 817 |
| Drawdown rate for silver | $ / OZ | 15.06 | 14.56 |