XML 82 R68.htm IDEA: XBRL DOCUMENT
v3.19.1

Prepaid expenses (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Disclosure of Prepaid expenses [Abstract] |
Disclosure of detailed information about prepaid expenses [Text Block] |
| (a) | This caption is made up as follows:
|  | 2018 |  |  | 2017 |
|  | US$(000) |  |  | US$(000) |
Prepaid rentals (b) |  |  | 27,464 |  |  |  | 28,349 |
Prepaid insurances |  |  | 12,486 |  |  |  | 12,401 |
Deferred costs of works for taxes |  |  | 2,407 |  |  |  | 2,013 |
Other prepaid expenses |  |  | 1,366 |  |  |  | 2,343 |
|  |  | 43,723 |  |  |  | 45,106 |
Classification by maturity: |  |  |  |  |  |  |  |
Current portion |  |  | 17,145 |  |  |  | 17,551 |
Non-current portion |  |  | 26,578 |  |  |  | 27,555 |
|  |  | 43,723 |  |  |  | 45,106 |
| (b) | This item corresponds to the balance of an original prepayment of US$31 million for the lease of hydraulic installations by the subsidiary Empresa de Generacion Huanza S.A. This prepayment is being charged to results during the life of the underlying assets (35 years) since January 2015.

X
- Definition The disclosure of detailed information about prepaid expense. + References No definition available. + Details
Name: | cik0001013131_DisclosureOfDetailedInformationAboutPrepaidExpensesTextBlock
Namespace Prefix: | cik0001013131_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | cik0001013131_DisclosureOfPrepaidExpensesAbstract
Namespace Prefix: | cik0001013131_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration