v3.26.1
Commitments and contingencies - Income tax declaration for 2013, 2017 and 2018 (Details)
12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
PEN (S/)
Dec. 31, 2025
PEN (S/)
Dec. 31, 2024
USD ($)
Aug. 28, 2024
USD ($)
Aug. 28, 2024
PEN (S/)
Aug. 11, 2023
USD ($)
Aug. 11, 2023
PEN (S/)
Jul. 31, 2023
USD ($)
Jul. 31, 2023
PEN (S/)
Dec. 31, 2022
PEN (S/)
Nov. 30, 2022
USD ($)
Nov. 30, 2022
PEN (S/)
May 15, 2021
USD ($)
May 15, 2021
PEN (S/)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
PEN (S/)
Disclosure of Commitments and contingencies [Line Items]                                    
Amount of tax debt | $ $ 479,990,000                                  
Contingent liability 20,500,000     S/ 6,087,000       $ 12,249,000                    
Other receivables | $ $ 713,604,000       $ 661,011,000                          
SUNAT. | Open tax procedure                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Declared tax deductions not recognized | S/                 S/ 3,648,000                  
SUNAT. | Year 2013 [Member] | Open tax procedure                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Declared tax deductions not recognized                             $ 41,341,000 S/ 139,235,000    
SUNAT. | Year 2014 [Member] | Open tax procedure                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Declared tax deductions not recognized                                 $ 28,176,000 S/ 94,898,000
SUNAT. | Ifrs Tax Year 2017 [Member]                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Amount of tax liability paid   $ 2,759,000 S/ (9,266,000)                              
Amount related to unaccepted repairs   2,749,000                   S/ 9,224,000            
SUNAT. | Ifrs Tax Year 2017 [Member] | Non-recognition of investment in development costs [Member]                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Declared tax deductions not recognized   11,793,000                   39,720,000            
Services of related parties not recognised   $ 33,984,000                   S/ 127,929,000            
SUNAT. | Ifrs Tax Year 2018 [Member] | Open tax procedure                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Declared tax deductions not recognized           $ 20,054,000       $ 21,882,000 S/ 73,700,000   $ 21,882,000 S/ 73,700,000        
Services of related parties not recognised                   $ 50,742,000 S/ 170,900,000   $ 50,742,000 S/ 170,900,000        
Contingent liability | S/             S/ 5,954,000                      
SUNAT. | Ifrs Tax Year 2018 [Member] | Non-recognition of investment in development costs [Member]                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Declared tax deductions not recognized           465,000 1,561,000                      
SUNAT. | Ifrs Tax Year 2018 [Member] | Non-recognition of the compensation of carry-over tax losses from previous years [Member]                                    
Disclosure of Commitments and contingencies [Line Items]                                    
Services of related parties not recognised           $ 3,183,000 S/ 10,688,000