COMMITMENTS AND CONTINGENCIES: - Others (Details) S/ in Millions		1 Months Ended						9 Months Ended
	Feb. 20, 2020 MWh	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2018 USD ($) T	May 31, 2016 MW	Jul. 31, 2014 MW	Jun. 30, 2014 MW	Sep. 30, 2024 USD ($) item	Sep. 30, 2024 PEN (S/) item	Sep. 30, 2024 PEN (S/)
Other commitments:
Commitment for capital projects								$ 257,600,000
Michiquillay
Other commitments:
Pre-operational period		12 years
Extended pre-operational period		3 years
Investment in projects in next five years		$ 20,000,000
Advancement of the project								30.00%		30.00%
Number of meters drilled | item								120,923	120,923
Number of core samples obtained								39,234
Period of investment in projects		5 years
Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								$ 5,100,000	S/ 445.0
Commitment liability recorded in the balance sheet								28,500,000
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								$ 269,300,000	S/ 1,000.0
Number of schools agreed for construction. | item								3	3
Amount committed to funding for school projects								$ 4,900,000	S/ 18.2
Amount committed for funding social and infrastructure improvement projects, build tracks and sidewalks								1,900,000	7.0
Copper | Michiquillay | Peru
Other commitments:
Contingent contractual obligation				$ 400,000,000
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			$ 12,500,000	$ 12,500,000
Remaining amount to pay if project is developed			$ 375,000,000.0
Funding for Different Projects | Development Fund Moquegua Region | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								67,700,000	251.5
Educational Project | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								119,800,000
Educational Project | Development Fund Moquegua Region | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								29,200,000	108.4
Amount of investment in project								28,700,000		S/ 106.7
Agricultural Projects | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								30,200,000	112.0
Agricultural Projects | Development Fund Moquegua Region | Peru
Other commitments:
Amount committed for funding social and infrastructure improvement projects, build tracks and sidewalks								3,300,000	12.4
Construction of Cularjahuira Dam | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								4,200,000	15.6
Study Of Engineering For Collazas Dam | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								700,000	2.6
Infrastructure Projects | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								16,300,000	60.4
Water Treatment | Development Fund Moquegua Region | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								$ 28,400,000	S/ 105.5
Percentage of progress on construction								48.00%	48.00%
Drinking Water Project | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								$ 2,600,000	S/ 9.6
Works For Taxes | Toquepala Concentrator Expansion | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects | S/									102.1
Amount committed to funding for social and infrastructure improvement projects								27,500,000
Works For Taxes | Development Fund Moquegua Region | Peru
Other commitments:
Amount committed to funding for social and infrastructure improvement projects								$ 61,400,000	S/ 227.9
Number of Infrastructure Projects Agreed for Construction | item								5	5
Amount financed per-investment studies for basic sanitation								$ 100,000	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								$ 22,500,000	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								$ 29,500,000	S/ 109.5
amount committed to Finance for past infrastructure project								1,700,000	6.3
Works For Taxes | Cajamarca Region
Other commitments:
Amount committed for funding health projects								$ 200,000	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