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Transactions in soles - Additional information (Details)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Purchased call options [member]
Transactions in Soles
Closing foreign exchange rate	0.3020	0.2968
Purchased call options [member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Transactions in Soles
Closing foreign exchange rate	3.311	3.369
Written put options [member]
Transactions in Soles
Closing foreign exchange rate	0.3015	0.2959
Written put options [member] | Sociedad Minera Cerro Verde S.A.A. [Member]
Transactions in Soles
Closing foreign exchange rate	3.317	3.379

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- Definition

Disclosure of Transactions in Soles

+ References

No definition available.

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- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

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