COMMITMENTS AND CONTINGENCIES: - Environmental matters (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Environmental costs | ||
| Environmental capital investment | $ 42.0 | $ 43.7 |
| Peru | ||
| Environmental costs | ||
| Environmental capital investment | 1.5 | 1.6 |
| Mexico | ||
| Environmental costs | ||
| Environmental capital investment | $ 40.5 | $ 42.1 |