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Business activity, current context and acquisition of Subsidiaries - Additional information (Detail)
1 Months Ended 12 Months Ended
Sep. 30, 2022
PEN (S/)
Apr. 30, 2022
PEN (S/)
Dec. 31, 2022
PEN (S/)
Clients
Dec. 31, 2021
PEN (S/)
Clients
Dec. 31, 2020
PEN (S/)
Apr. 30, 2022
USD ($)
Mar. 31, 2022
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Outstanding Capital Stock Percentage     70.64% 70.64%      
Borrowings     S/ 7,906,303,000 S/ 8,389,672,000      
Rescheduled Loan     S/ 5,048,978,000 S/ 6,266,601,000 S/ 10,489,296,000    
Act No 31171 [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Description of withdrawal     one-off withdrawal one-off withdrawal      
Number of clients | Clients       242,000      
Total amount withdrawn       S/ 1,630,000,000      
Act No 31480 [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Number of clients | Clients     261,000        
Total amount withdrawn     S/ 767,470,000        
Reactiva Peru [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Loans granted during the period         S/ 6,617,142,000    
Borrowings     2,357,201,000 4,976,073,000      
Peruvian Government [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Borrowings     2,040,379,000 4,421,999,000      
Peruvian Government [Member] | Reactiva Peru [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
accured Interest on borrowings     57,254,000 79,936,000      
Peruvian Government [Member] | Reactiva Peru [Member] | Rescheduled loans [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Borrowings     1,473,770,000 1,974,180,000      
Amount of modification made during the period for bank loans     S/ 133,046,000 S/ 2,012,855,000      
Banco Internacional del Per SAA [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Percentage of capital stock owned     99.30% 99.30%      
Interseguro Compaa de Seguros SA [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Percentage of capital stock owned     99.84% 99.84%      
Inteligo Group Corp [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Percentage of capital stock owned     100.00% 100.00%      
Izipay [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Percentage of capital stock owned   100.00%          
Percentage of voting equity interests acquired   50.00%       50.00% 50.00%
Cash transferred   S/ 312,647,000       $ 83,775,000  
Fair value adjustment on the participation held in subsidiaries S/ 222,513,000            
Acquisiton related cost recognized as expense S/ 381,000            
Revenue of acquiree   595,360,000          
Profit (loss) of acquiree   41,075,000          
Revenue of combined entity as if combination occurred at beginning of period   754,284,000          
Profit (loss) of combined entity as if combination occurred at beginning of period   S/ 51,182,000          
Intercorp Per Ltd [Member]              
Business activity, current context and acquisition of Subsidiaries [Line Items]              
Issued capital stock, Percentage     70.65% 70.65%