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Equity (Details) - PEN (S/)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Equity (Details) [Line Items]    
Share capital authorized 423,868,449 423,868,449
Total outstanding shares 34,252,841 31,728,741
Nominal value per share (in Nuevos Soles per share) S/ 1  
Number of investment shares acquired 36,040,497 36,040,497
Value of investment shares acquired (in Nuevos Soles) S/ 121,258,000 S/ 121,258,000
Additional paid in capitals (in Nuevos Soles) S/ 432,779,000 432,779,000
Distributable earnings, percentage 10.00%  
Percentage of capital 20.00%  
Dividends payable (in Nuevos Soles) S/ 9,550,000 S/ 7,686,000
Description of dividend payable During year 2019, in order to comply with Peruvian law requirements S/280,000, respectively corresponding to dividends payable aged greater than ten years were transferred from “Dividends payable” caption to “Legal reserve” caption in the consolidated statement of changes in equity.  
Lima Stock Exchange [Member]    
Equity (Details) [Line Items]    
Total outstanding shares 389,615,608 392,139,708
Number of investment shares acquired 928,000  
Issuance of common shares 111,484,000  
Investment shares [Member]    
Equity (Details) [Line Items]    
Investment shares subscribed and fully paid 40,278,894 40,278,894