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Finance costs and finance income (Tables) | 12 Months Ended
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Dec. 31, 2023
Finance costs and finance income |
Disclosure Of Detailed Information About Finance Cost And Finance Revenues [Text Block] |
| (a) | This caption is made up as follows:
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022 |  | 2021
​ | ​ | US$(000) | ​ | US$(000) | ​ | US$(000)
​ | ​ | ​ | ​ | ​ | ​ | ​
Finance revenues: | ​ | ​ | ​ | ​ | ​ | ​
Interest on time deposits |  | 7,795 |  | 3,521 |  | 338
Interests on third party loans | ​ | 800 | ​ | 449 | ​ | 203
Interest on loans to related parties, note 32(a) |  | 23 |  | 94 |  | 89
Interest from financial instruments | ​ | 85 | ​ | 74 | ​ | 114
Interest on tax claims |  | — |  | — |  | 75
Other finance revenues |  | — |  | 565 |  | 303
​ |  | 8,703 |  | 4,703 |  | 1,122
Reversal of the amortized cost of the syndicated loan, note 16(g) | ​ | 85 | ​ | 8,855 | ​ | —
Unrealized change of the fair value related to contingent consideration liability (b) |  | — |  | 813 |  | 4,382
Accrual of other account receivable |  | 269 |  | 72 |  | 448
Total finance revenues | ​ | 9,057 | ​ | 14,443 | ​ | 5,952
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022 |  | 2021
​ | ​ | US$(000) | ​ | US$(000) | ​ | US$(000)
​ | ​ | ​ | ​ | ​ | ​ | ​
Finance costs: | ​ | ​ | ​ | ​ | ​ | ​
Interest related to the liability resulting from the tax claim of the years 2009-2010 |  | 58,454 |  | — |  | —
Interest related to senior notes |  | 30,250 |  | 31,771 |  | 13,343
Interest on borrowings and loans | ​ | 9,044 | ​ | 10,865 | ​ | 17,166
Settlement of hedging financial instruments, note 34(b) |  | — |  | 818 |  | 1,547
Tax on financial transactions |  | 500 |  | 189 |  | 193
Interest on loans |  | — |  | 26 |  | 43
Commissions for bond letters issued to SUNAT | ​ | — | ​ | — | ​ | 12,124
Other financial expenses |  | — |  | — |  | —
​ |  | 98,248 |  | 43,669 |  | 44,416
Accretion expense for mine closure and exploration projects, note 15(b) |  | 11,838 |  | 5,070 |  | 5,598
Accrual of debt issuance costs, note 16(g) |  | 155 |  | 2,820 |  | 885
Accrual of costs for bond issuance, note 16(g) |  | 2,082 |  | 1,963 |  | 717
Amortized cost of financial obligations, note 16(g) | ​ | — | ​ | 515 | ​ | 8,837
Update of the accounts receivable from Howden Hodco Perú, notes 1(d) and 7(i) | ​ | 1,956 | ​ | — | ​ | —
Accretion expense for leases related to right-in-use assets, note 16(g) |  | 266 |  | 99 |  | 176
Fair value variation of the financial liability of the contingent consideration liability (b) | ​ | 4,709 | ​ | — | ​ | —
​ | ​ | 119,254 | ​ | 54,136 | ​ | 60,629
Schedule of contingent liabilities in business combination | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022 |  | 2021
​ | ​ | US$(000) | ​ | US$(000) | ​ | US$(000)
​ | ​ | ​ | ​ | ​ | ​ | ​
Beginning balance |  | 16,905 |  | 17,718 |  | 22,100
​ | ​ | ​ | ​ | ​ | ​ | ​
Variation of the fair value in profit or loss |  | 4,709 |  | (813) |  | (4,382)
Ending balance |  | 21,614 |  | 16,905 |  | 17,718
Schedule of significant unobservable valuation input | Significant unobservable valuation inputs are provided below: ​
​ | ​ | ​ | ​ | ​
​ |  | 2023 |  | 2022
​ | ​ | ​ | ​ | ​
Annual average of future sales of mineral (US$000) |  | 224,288 |  | 208,912
Useful life of mining properties |  | 14 |  | 14
Pre-tax discount rate (%) |  | 12.04 |  | 13.2

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