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Financial obligations - Additional information (Details)
 1 Months Ended 12 Months Ended
Apr. 29, 2022
USD ($)
installment
Jan. 03, 2022
USD ($)
Nov. 02, 2020
Oct. 29, 2020
USD ($)
Oct. 29, 2019
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2014
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Mar. 02, 2022
USD ($)
Jul. 23, 2021
USD ($)
Dec. 31, 2019
USD ($)
Oct. 29, 2018
USD ($)
Jun. 27, 2016
USD ($)
Feb. 12, 2009
USD ($)
Disclosure of Financial obligations [Line Items]                                
Bank loans               $ 0 $ 50,000,000 $ 65,793,000     $ 55,000,000      
Equity               3,162,941,000 2,538,531,000 2,799,857,000     $ 2,968,200,000      
Amount of prepaid               50,000,000 65,793,000 $ 7,197,000            
Empresa de Generacin Huanza S.A                                
Disclosure of Financial obligations [Line Items]                                
Borrowings               86,625,000 112,784,000              
Compaa de Minas Buenaventura S.A.A. [Member]                                
Disclosure of Financial obligations [Line Items]                                
Notional amount               0 275,000,000     $ 550,000,000     $ 275,000,000  
Borrowings               0 281,284,000              
Banco De Credito Del Peru - New Financial Obligation [Member]                                
Disclosure of Financial obligations [Line Items]                                
Notional amount         $ 161,893,850                      
Banco De Credito Del Peru - New Financial Obligation [Member] | Minimum                                
Disclosure of Financial obligations [Line Items]                                
Debt service coverage ratio         1.3                      
Banco De Credito Del Peru - New Financial Obligation [Member] | Maximum                                
Disclosure of Financial obligations [Line Items]                                
Leverage ratio         1.0                      
Indebtedness ratio         2.25                      
Banco De Credito Del Peru - New Financial Obligation Maturing on October 2024 [Member]                                
Disclosure of Financial obligations [Line Items]                                
Notional amount         $ 113,325,695                      
Borrowings, interest rate         3.76%                      
Borrowings, maturity         October 2024                      
Term of debt         5 years                      
Banco De Credito Del Peru - New Financial Obligation Maturing on October 2026 [Member]                                
Disclosure of Financial obligations [Line Items]                                
Notional amount         $ 48,568,155                      
Borrowings, interest rate basis         Three-month LIBOR plus 2.39                      
Borrowings, adjustment to interest rate basis         2.39%                      
Borrowings, maturity         October 2026                      
Spread on variable interest rate         2.39%                      
Term of debt         7 years                      
Banco de Credito del Peru and Empresa de Generacion Huanza, Tranche I                                
Disclosure of Financial obligations [Line Items]                                
Notional amount $ 35,000,000                              
Borrowings, interest rate 5.05%                              
Final installment amount $ 22,531,250                              
Term of debt 60 months                              
Amortization of outstanding principal $ 9,191,364                              
Banco de Credito del Peru and Empresa de Generacion Huanza, Tranche II                                
Disclosure of Financial obligations [Line Items]                                
Notional amount $ 55,000,000                              
Borrowings, interest rate 5.05%                              
Final installment amount $ 35,406,250                              
Term of debt 60 months                              
Amortization of outstanding principal $ 13,904,800                              
Number of fixed quarterly installments | installment 20                              
Banco de Credito del Peru [member]                                
Disclosure of Financial obligations [Line Items]                                
Notional amount           $ 103,373,000 $ 103,373,000 $ 0 $ 61,667,000         $ 119,000,000    
Borrowings, interest rate basis           LIBOR 30 days plus 2.10       LIBOR 30 days plus 2.10            
Final installment amount       $ 44,191,000   $ 68,905,000 $ 68,905,000     $ 44,191,000            
Term of debt     18 months                          
Banco de Credito del Peru [member] | Minimum                                
Disclosure of Financial obligations [Line Items]                                
Debt service coverage ratio                   1.1            
Equity                               $ 30,000,000
Syndicated Term Loan | January 3, 2022                                
Disclosure of Financial obligations [Line Items]                                
Amount of prepaid   $ 100,000,000                            
Syndicated Term Loan | March 2, 2022                                
Disclosure of Financial obligations [Line Items]                                
Borrowings                     $ 175,000,000