COMMITMENTS AND CONTINGENCIES: - Others (Details) S/ in Millions, $ in Millions		1 Months Ended						12 Months Ended
	Feb. 20, 2020 MWh	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2018 USD ($) T	May 31, 2016 MW	Jul. 31, 2014 MW	Jun. 30, 2014 MW	Dec. 31, 2023 USD ($) item	Dec. 31, 2023 PEN (S/) item	Dec. 31, 2023 PEN (S/)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Other commitments:
Property net book value								$ 9,782.9			$ 9,596.6	$ 9,464.4
Commitment for capital projects								$ 348.2
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								63,000	63,000
Number of core samples obtained | item								20,137	20,137
Period of investment in projects		5 years
Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								$ 118.8	S/ 445.0
Commitment liability recorded in the balance sheet								14.3
Development Fund Moquegua Region | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								$ 267.0	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								1.7	6.2
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								65.2	244.4
Educational Project | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								5.0	18.8
Educational Project | Development Fund Moquegua Region | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								28.9	108.4
Amount of investment in project								28.5		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	4.1
Number of irrigation system								3.0
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								32.00%	32.00%
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								1.6	5.9
Works For Taxes | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								26.1	97.7
Works For Taxes | Development Fund Moquegua Region | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								$ 38.3	S/ 143.6
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								$ 21.8	S/ 81.6
Works For Taxes | Arequipa Region
Other commitments:
Number of schools agreed for construction. | item								2	2
Amount committed to funding for school projects								$ 27.8	S/ 104.3
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