XML 69 R55.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Basis for preparation, consolidation and accounting policies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Disclosure of basis for preparation, consolidation and accounting policies [Line Items] |
The disclosure of useful lives of assets. [Text Block] | Depreciation of assets in mining units with short useful lives or used for administrative purposes is calculated using the straight-line method of accounting. The useful lives are the following:
| Years
Buildings, construction and other | Between 6 and 20
Machinery and equipment | Between 5 and 10
Transportation units | 5
Furniture and fixtures | 10
Computer equipment | 4
Minera Yanacocha SRL and subsidiary [Member] |
Disclosure of basis for preparation, consolidation and accounting policies [Line Items] |
The disclosure of useful lives of assets. [Text Block] | under the units of production method or the useful life of the mine. Remaining useful lives as follows:
Land improvements | Between 2 and 4 years
Buildings | Between 5 and 10 years
Plant and equipment | Between 3 and 10 years
Vehicles | Between 3 and 4 years
Furniture and fittings | Between 3 and 4 years
Other equipment | Between 3 and 4 years
Computer equipment | Between 3 and 4 years
Assets retirement cost | Useful life of the mine and/or process facilities
Sociedad Minera Cerro Verde S.A.A. [Member] |
Disclosure of basis for preparation, consolidation and accounting policies [Line Items] |
The disclosure of useful lives of assets. [Text Block] | Other assets are depreciated using the straight-line method based on the following estimated useful lives:
| Years
Buildings and other constructions | Between 5 and 35
Machinery and equipment | Between 3 and 25
Transportation units | 7
Furniture and fixtures | 7
Other equipment | Between 3 and 25

X
- References No definition available. + Details
Name: | cik0001013131_DisclosureOfBasisForPreparationConsolidationAndAccountingPoliciesLineItems
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The disclosure of useful lives of assets. + References No definition available. + Details
Name: | cik0001013131_DisclosureOfUsefulLivesOfAssetsTextBlock
Namespace Prefix: | cik0001013131_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_MineraYanacochaSrlAndSubsidiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=cik0001013131_SociedadMineraCerroVerdeSaaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |