Contractual commitments and contingencies (Details) - USD ($) $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Mar. 27, 2023 |
|
| Disclosure of contingent liabilities [line items] | ||
| Net smelter returns royalty | 1.50% | |
| Brazil tax authority | ||
| Disclosure of contingent liabilities [line items] | ||
| Loss contingency, damages sought | $ 53 |