Other financial liabilities - Additional information (Details) - Sociedad Minera El Brocal S.A.A $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2025
USD ($)
item
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Dec. 31, 2024
USD ($)
item
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May 31, 2022
USD ($)
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| Disclosure Of Other Financial Liabilities [Line Items] | |||
| Maximum earnings before interest, taxes, depreciation, and amortization ratio | item | 3.5 | 3 | |
| Minimum Interest Coverage Ratio | item | 1 | 1 | |
| Credit Facility | |||
| Disclosure Of Other Financial Liabilities [Line Items] | |||
| Commitment fee | 0.50% | ||
| Unsecured Revolving Credit Facility [Member] | |||
| Disclosure Of Other Financial Liabilities [Line Items] | |||
| Notional amount | $ | $ 350.0 | ||
| Interest expense | $ | $ 1.9 | $ 1.9 | |