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Basis for preparation, consolidation and accounting policies - Useful lives or used for administrative purposes (Details)	12 Months Ended
	Dec. 31, 2019
Vehicles [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	5 years
Fixtures and fittings [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	10 years
Computer Equipment [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	4 years
Bottom of range [member] | Buildings
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	6 years
Bottom of range [member] | Buildings | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	5 years
Bottom of range [member] | Buildings | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	5 years
Bottom of range [member] | Machinery and equipment
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	5 years
Bottom of range [member] | Machinery and equipment | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	3 years
Bottom of range [member] | Machinery and equipment | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	2 years
Bottom of range [member] | Vehicles [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	3 years
Bottom of range [member] | Vehicles [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	5 years
Bottom of range [member] | Fixtures and fittings [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	3 years
Bottom of range [member] | Fixtures and fittings [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	7 years
Bottom of range [member] | Computer Equipment [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	3 years
Bottom of range [member] | Land improvements [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	2 years
Bottom of range [member] | Other property, plant and equipment [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	3 years
Bottom of range [member] | Other property, plant and equipment [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	3 years
Top of range [member] | Buildings
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	20 years
Top of range [member] | Buildings | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	10 years
Top of range [member] | Buildings | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	35 years
Top of range [member] | Machinery and equipment
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	10 years
Top of range [member] | Machinery and equipment | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	10 years
Top of range [member] | Machinery and equipment | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	30 years
Top of range [member] | Vehicles [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	4 years
Top of range [member] | Vehicles [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	7 years
Top of range [member] | Fixtures and fittings [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	4 years
Top of range [member] | Fixtures and fittings [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	10 years
Top of range [member] | Computer Equipment [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	4 years
Top of range [member] | Land improvements [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	4 years
Top of range [member] | Other property, plant and equipment [Member] | Minera Yanacocha SRL and subsidiary [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	4 years
Top of range [member] | Other property, plant and equipment [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Basis for preparation, consolidation and accounting policies
Useful life of property plant equipment	25 years

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- Definition

Basis for preparation, consolidation and accounting policies

+ References

No definition available.

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- Definition

The useful life, measured as period of time, used for property, plant and equipment. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2019-01-01
-Paragraph 73
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2019-en-r&anchor=para_73_c&doctype=Standard
-URIDate 2019-03-27

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