XML 248 R234.htm IDEA: XBRL DOCUMENT v3.8.0.1

Sales of goods (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure of Sales of goods [Line Items]
Revenue from sale of goods, related party transactions	$ 3,000.0	$ 2,300.0	$ 0.9
Increase decrease in revenue from sale of copper through adjustments arising from change in provisional price	$ 1.3	$ 86.3	$ 7.9

X

- References

No definition available.

+ Details

Name:	cik0001013131_DisclosureOfSalesOfGoodsLineItems
Namespace Prefix:	cik0001013131_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The increase (decrease) in revenue from sale of copper through adjustments arising from change in provisional price.

+ References

No definition available.

+ Details

Name:	cik0001013131_IncreaseDecreaseInRevenueFromSaleOfCopperThroughAdjustmentsArisingFromChangeInProvisionalPrice
Namespace Prefix:	cik0001013131_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of revenue arising from the sale of goods in related party transactions. [Refer: Revenue; Related parties [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 24
-IssueDate 2017-01-01
-Paragraph 21
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2017-03-01&anchor=para_21_a&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_RevenueFromSaleOfGoodsRelatedPartyTransactions
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration