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Finance costs and finance income (Tables)

12 Months Ended

Dec. 31, 2021

Finance costs and revenues [Line Items]

Disclosure Of Detailed Information About Finance Cost And Finance Revenues [Text Block]

(a) This caption is made up as follows:

​

​	​	​	​	​	​	​
​		2021		2020		2019
​	​	US$(000)	​	US$(000)	​	US$(000)
​	​	​	​	​	​	​
Finance revenues:	​	​	​	​	​	​
Interest on time deposits		338		1,074		4,971
Interests on third parties loans	​	203	​	355	​	460
Interests from financial instruments	​	114	​	—	​	—
Interests on loans to related parties, note 32(a)		89		114		86
Interests on tax claims		75		352		16
Other		303		155		280
​		1,122		2,050		5,813
Unrealized change of the fair value related to contingent consideration liability (b)		4,382		—		—
Accrual of other account receivable		448		—		237
Financial obligations amortized costs, note 16(g)	​	—	​	361	​	—
Total finance revenues	​	5,952	​	2,411	​	6,050
​	​	​	​	​	​	​
​		2021		2020		2019
​	​	US$(000)	​	US$(000)	​	US$(000)
​	​	​	​	​	​	​
Finance costs:	​	​	​	​	​	​
Interest on borrowings		17,166		23,178		28,418
Interest related to senior notes		13,343		—		—
Commissions for bond letters issued to SUNAT		12,124		—		—
Settlement of hedging financial instruments, note 34(c)		1,547		146		—
Tax on financial transactions		193		107		166
Interest on loans		43		55		1
Interest on commercial obligations	​	—	​	626	​	—
Other		—		37		141
​		44,416		24,149		28,726
Amortized cost of financial obligations, note 16(g)	​	8,837	​	—	​	—
Accretion expense for mine closure, note 15(b)		5,598		6,672		10,390
Accrual of debt issuance costs, note 16(g)		885		976		2,109
Accrual of costs for bond issuance, note 16(g)		717		—		—
Accretion expense for leases related to rights in use, note 16(g)	​	176	​	180	​	293
Unrealized change of the fair value related to contingent consideration liability (b)		—		5,690		655
Other	​	—	​	155	​	—
​	​	60,629	​	37,822	​	42,173

Schedule of contingent liabilities in business combination

(c) A reconciliation of fair value measurement of the contingent consideration liability is provided below:

​

​	​	​	​	​	​	​
​		2021		2020		2019
​	​	US$(000)	​	US$(000)	​	US$(000)
​	​	​	​	​	​	​
Beginning balance		22,100		16,410		15,755
​	​	​	​	​	​	​
Variation of the fair value in profit and loss		(4,382)		5,690		655
Ending balance		17,718		22,100		16,410

Schedule of significant unobservable valuation input

Significant unobservable valuation inputs are provided below:

​

​	​	​	​	​
​		2021		2020
​	​	​	​	​
Annual average of future sales of mineral (US$000)		193,972		222,238
Useful life of mining properties		14		14
Pre-tax discount rate (%)		9.7		9.3

Minera Yanacocha SRL and subsidiary [Member]

Finance costs and revenues [Line Items]

Schedule of Finance cost

This caption is made up as follows:

​

​	​	​	​	​	​	​
​		2021		2020		2019
​	​	US$(000)	​	US$(000)	​	US$(000)
​	​	​	​	​	​	​
Interest on tax contingency and others, note 24		54,580		—		16,938
Unwinding of the discount of the provision for mining closure, note 13(b)		33,609		32,049		36,709
Commissions of guarantee letters		3,059		3,153		2,485
Unwinding of debt instruments, note 15		1,722		1,497		1,497
​		​		​		​
​		92,970		36,699		57,629

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