COMMITMENTS AND CONTINGENCIES: - Environmental matters (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Environmental costs | ||
| Environmental capital investment | $ 138.1 | $ 91.1 |
| PERU | ||
| Environmental costs | ||
| Environmental capital investment | 4.6 | 6.9 |
| MEXICO | ||
| Environmental costs | ||
| Environmental capital investment | $ 133.5 | $ 84.2 |