Subsequent events (Details) $ / shares in Units, $ in Millions, $ in Millions |
Jul. 08, 2025
CAD ($)
|
Jul. 08, 2025
USD ($)
|
Jul. 16, 2025
CAD ($)
$ / shares
|
Jul. 16, 2025
USD ($)
|
|---|---|---|---|---|
| Major business combination | Augusta Gold Corp | ||||
| Disclosure of subsidiaries [line items] | ||||
| Business combination, price per share (in CAD per share) | $ / shares | $ 1.70 | |||
| Business combination, fully diluted equity value | $ 152.0 | $ 111.0 | ||
| Repayment of stockholder loans | $ | $ 32.6 | |||
| G2 Goldfields Inc | Classification of assets as held for sale | ||||
| Disclosure of subsidiaries [line items] | ||||
| Percentage of equity interest sold | 14.91% | 14.91% | ||
| Proceeds from disposal of other investments | $ 98.9 | $ 70.0 | ||
| Gain on disposal of investments, ratio | 15 | 15 |