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COMMITMENTS AND CONTINGENCIES: - Others (Details) S/ in Millions, $ in Millions |  | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Feb. 20, 2020 MWh | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2018 USD ($) T | May 31, 2016 MW | Jul. 31, 2014 MW | Jun. 30, 2014 MW | Mar. 31, 2024 USD ($) item | Mar. 31, 2024 PEN (S/) item | Mar. 31, 2024 PEN (S/) | Dec. 31, 2023 USD ($) | Mar. 31, 2023 USD ($)
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Property net book value |  |  |  |  |  |  |  | $ 9,783.2 |  |  | $ 9,782.9 | $ 9,613.9
Commitment for capital projects |  |  |  |  |  |  |  | $ 314.7 |  |  |  |
Michiquillay |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Pre-operational period |  | 12 years |  |  |  |  |  |  |  |  |  |
Extended pre-operational period |  | 3 years |  |  |  |  |  |  |  |  |  |
Investment in projects in next five years |  | $ 20.0 |  |  |  |  |  |  |  |  |  |
Number of meters drilled | item |  |  |  |  |  |  |  | 80,000 | 80,000 |  |  |
Number of core samples obtained | item |  |  |  |  |  |  |  | 27,902 | 27,902 |  |  |
Period of investment in projects |  | 5 years |  |  |  |  |  |  |  |  |  |
Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | $ 5.1 | S/ 445.0 |  |  |
Commitment liability recorded in the balance sheet |  |  |  |  |  |  |  | 14.3 |  |  |  |
Amount committed to funding for social and infrastructure improvement projects | S/ |  |  |  |  |  |  |  |  | 18.8 |  |  |
Development Fund Moquegua Region | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | $ 268.7 | S/ 1,000.0 |  |  |
Number of schools agreed for construction. | item |  |  |  |  |  |  |  | 3 | 3 |  |  |
Amount committed to funding for school projects |  |  |  |  |  |  |  | $ 4.9 | S/ 18.2 |  |  |
Amount committed for funding social and infrastructure improvement projects, build tracks and sidewalks |  |  |  |  |  |  |  | 1.9 | 7.0 |  |  |
Copper | Michiquillay | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Contingent contractual obligation |  |  |  | $ 400.0 |  |  |  |  |  |  |  |
Estimated mineralized material (in tons) | T |  |  |  | 2,288,000,000 |  |  |  |  |  |  |  |
Copper grade percentage |  |  |  | 0.43% |  |  |  |  |  |  |  |
Annual production ( in tons) | T |  |  |  | 225,000 |  |  |  |  |  |  |  |
Initial mine life |  |  |  | 25 years |  |  |  |  |  |  |  |
Contractual obligation paid on project |  |  | $ 12.5 | $ 12.5 |  |  |  |  |  |  |  |
Remaining amount to pay if project is developed |  |  | $ 375.0 |  |  |  |  |  |  |  |  |
Funding for Different Projects | Development Fund Moquegua Region | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 67.5 | 251.3 |  |  |
Educational Project | Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 119.6 |  |  |  |
Educational Project | Development Fund Moquegua Region | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 28.7 | 108.4 |  |  |
Amount of investment in project |  |  |  |  |  |  |  | 28.4 |  | S/ 106.7 |  |
Construction of Cularjahuira Dam | Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 4.2 | 15.6 |  |  |
Study Of Engineering For Collazas Dam | Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 0.7 | 2.6 |  |  |
Infrastructure Projects | Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 2.9 | 10.7 |  |  |
Irrigation Systems Projects | Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | $ 1.1 | S/ 4.1 |  |  |
Number of irrigation system | item |  |  |  |  |  |  |  | 3 | 3 |  |  |
Water Treatment | Development Fund Moquegua Region | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | $ 28.2 | S/ 105.5 |  |  |
Percentage of progress on construction |  |  |  |  |  |  |  | 38.00% | 38.00% |  |  |
Drinking Water Project | Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | $ 2.6 | S/ 9.6 |  |  |
Feasibility Studies and Minor Projects | Development Fund Moquegua Region | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 1.7 | 6.2 |  |  |
Works For Taxes | Toquepala Concentrator Expansion | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | 26.3 | 97.7 |  |  |
Works For Taxes | Development Fund Moquegua Region | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Amount committed to funding for social and infrastructure improvement projects |  |  |  |  |  |  |  | $ 62.6 | S/ 233.0 |  |  |
Number of Infrastructure Projects Agreed for Construction | item |  |  |  |  |  |  |  | 3 | 3 |  |  |
Amount financed per-investment studies for basic sanitation |  |  |  |  |  |  |  | $ 0.1 | S/ 0.3 |  |  |
Works For Taxes | Apurimac Region |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Number of schools agreed for construction. | item |  |  |  |  |  |  |  | 2 | 2 |  |  |
Amount committed to funding for school projects |  |  |  |  |  |  |  | $ 22.5 | S/ 83.7 |  |  |
Works For Taxes | Arequipa Region |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Number of schools agreed for construction. | item |  |  |  |  |  |  |  | 2 | 2 |  |  |
Amount committed to funding for school projects |  |  |  |  |  |  |  | $ 28.6 | S/ 106.3 |  |  |
Amount committed to funding for sport infrastructure project |  |  |  |  |  |  |  | $ 0.2 | S/ 0.7 |  |  |
Electroperu S.A | Power purchase agreements | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Purchase agreement, contracted power capacity (in megawatts) | MW |  |  |  |  |  |  | 120 |  |  |  |  |
Term of power purchase agreement related to sale of power plant |  |  |  |  |  |  | 20 years |  |  |  |  |
Parque Eolico de Fenicias, S. de R.L. de C.V | Power purchase agreements | Mexico |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Term of power purchase agreement related to sale of power plant | 20 years |  |  |  |  |  |  |  |  |  |  |
Purchase agreement, contracted power capacity (in megawatts per year) | MWh | 611,400 |  |  |  |  |  |  |  |  |  |  |
Kallpa | Power purchase agreements | Peru |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Purchase agreement, contracted power capacity (in megawatts) | MW |  |  |  |  |  | 120 |  |  |  |  |  |
Term of power purchase agreement related to sale of power plant |  |  |  |  |  | 10 years |  |  |  |  |  |
Kallpa | Power purchase agreements | Peru | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Other commitments: |  |  |  |  |  |  |  |  |  |  |  |
Purchase agreement, contracted power capacity (in megawatts) | MW |  |  |  |  | 80 |  |  |  |  |  |  |

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