XML 129 R115.htm IDEA: XBRL DOCUMENT v3.19.1
Basis for preparation, consolidation and accounting policies (Details 1)
 12 Months Ended
Dec. 31, 2018
Buildings [member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 6 and 20
Buildings [member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 5 and 10 years
Buildings [member] | Sociedad Minera Cerro Verde S.A.A. [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 5 and 35
Machinery [member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 5 and 10
Machinery [member] | Sociedad Minera Cerro Verde S.A.A. [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 3 and 25
Vehicles [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment 5
Vehicles [Member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 3 and 4 years
Vehicles [Member] | Sociedad Minera Cerro Verde S.A.A. [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment 7
Fixtures and fittings [member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment 10
Fixtures and fittings [member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 3 and 4 years
Fixtures and fittings [member] | Sociedad Minera Cerro Verde S.A.A. [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment 7
Computer Equipment [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment 4
Computer Equipment [Member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 3 and 4 years
Land improvements [member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 2 and 4  years
Plant and equipment [Member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 3 and 10 years
Other property, plant and equipment [member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 3 and 4 years
Other property, plant and equipment [member] | Sociedad Minera Cerro Verde S.A.A. [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Between 3 and 25
Asset retirement cost [Member] | Minera Yanacocha SRL and subsidiary [Member]  
Disclosure of basis for preparation, consolidation and accounting policies [Line Items]  
Useful lives or depreciation rates, property, plant and equipment Useful life of the mine and (or) process facilities