v3.26.1
Financial investments - Summary of credit quality and maximum exposure to credit risk (Detail) - Debt instruments measured at fair value through other comprehensive income [member] - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Impaired individually impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk S/ 0 S/ 0
Impaired collectively impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 21,299,397 20,377,805
Stage 1 [member] | Impaired individually impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 0 0
Stage 1 [member] | Impaired collectively impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 20,793,439 19,331,755
Stage 2 [member] | Impaired individually impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 0 0
Stage 2 [member] | Impaired collectively impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 428,401 1,046,050
Stage 3 [member] | Impaired individually impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 0 0
Stage 3 [member] | Impaired collectively impaired [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 77,557 0
High grade [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 2,888,817 2,946,070
High grade [member] | Stage 1 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 2,888,817 2,946,070
High grade [member] | Stage 2 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 0 0
High grade [member] | Stage 3 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 0 0
Standard grade [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 18,328,765 17,208,742
Standard grade [member] | Stage 1 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 17,904,622 16,385,685
Standard grade [member] | Stage 2 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 424,143 823,057
Standard grade [member] | Stage 3 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 0 0
Sub-standard grade [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 81,815 222,993
Sub-standard grade [member] | Stage 1 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 0 0
Sub-standard grade [member] | Stage 2 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk 4,258 222,993
Sub-standard grade [member] | Stage 3 [member]    
Disclosure of internal credit grades [line items]    
Maximum exposure to credit risk S/ 77,557 S/ 0