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Commitments and contingencies - Income tax declaration for 2013 (Details)
 12 Months Ended
Jul. 24, 2023
USD ($)
Jul. 24, 2023
PEN (S/)
Jun. 08, 2023
USD ($)
Jun. 08, 2023
PEN (S/)
Oct. 05, 2021
USD ($)
Oct. 05, 2021
PEN (S/)
Dec. 31, 2023
USD ($)
Dec. 31, 2023
PEN (S/)
Dec. 31, 2019
USD ($)
Dec. 31, 2019
PEN (S/)
Dec. 31, 2023
PEN (S/)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
PEN (S/)
Dec. 28, 2022
USD ($)
Dec. 28, 2022
PEN (S/)
Nov. 30, 2022
USD ($)
Nov. 30, 2022
PEN (S/)
Mar. 15, 2021
USD ($)
Mar. 15, 2021
PEN (S/)
Nov. 17, 2020
USD ($)
Nov. 17, 2020
PEN (S/)
Dec. 31, 2018
USD ($)
Dec. 31, 2018
PEN (S/)
Disclosure of Commitments and contingencies [Line Items]                                              
Amount of tax debt             $ 820,292,000                                
Contingent liability             10,337,000       S/ 38,381,000 $ 11,139,000 S/ 41,358,000                    
Non-recognition of investment in development costs [Member]                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Disallowance of bonus paid to contractors         $ 1,219,000 S/ 4,526,000                                  
SUNAT.                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Declared tax deductions not recognized                               $ 4,476,000 S/ 16,618,000            
Contingent liability             2,828,000       10,500,000                        
Deductible temporary differences for which no deferred tax asset is recognised                               $ 4,476,000 S/ 16,618,000            
SUNAT. | Open tax procedure                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Declared tax deductions not recognized                           $ 168,000 S/ 624,000     $ 37,499,000 S/ 139,235,000        
Payments of tax debt                                       $ 1,280,000 S/ 4,744,000    
Deductible temporary differences for which no deferred tax asset is recognised                           $ 168,000 S/ 624,000     $ 37,499,000 S/ 139,235,000        
SUNAT. | Year 2011 [Member]                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Amount of tax liability paid     $ 103,000 S/ 383,000                                      
SUNAT. | Year 2013 [Member]                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Amount of tax liability paid $ 103,000 S/ 396,000                                          
SUNAT. | Year 2013 [Member] | Open tax procedure                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Contingent liability             15,160,000       57,909,000                        
SUNAT. | Year 2014 [Member] | Open tax procedure                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Declared tax deductions not recognized                                           $ 25,558,000 S/ 94,898,000
Disallowance of bonus paid to contractors                 $ 557,000 S/ 2,067,000                          
Deductible temporary differences for which no deferred tax asset is recognised                                           $ 25,558,000 S/ 94,898,000
SUNAT. | Ifrs Tax Year 2017 [Member]                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Amount of tax debt             4,711,000 S/ 17,493,000                              
Amount of tax liability paid             2,496,000 S/ 9,266,000                              
Amount related to unaccepted repairs             2,490,000       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             10,698,000       39,720,000                        
Deductible temporary differences for which no deferred tax asset is recognised             10,698,000       39,720,000                        
SUNAT. | Ifrs Tax Year 2017 [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             34,454,000       127,929,000                        
SUNAT. | Ifrs Tax Year 2017 [Member] | Declaration of transfer prices and the operations between related parties [Member]                                              
Disclosure of Commitments and contingencies [Line Items]                                              
Services of related parties not recognised             $ 900,000       S/ 3,341,000