v3.26.1
Financial investments - Summary of financial assets classified by contractual maturity (Detail) - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Financial investments S/ 27,705,116 S/ 26,397,552
Investments at fair value through other comprehensive income [member]    
Disclosure of financial assets [line items]    
Financial investments 21,855,546 20,836,073
Investments at fair value through other comprehensive income [member] | Up to 3 months [member]    
Disclosure of financial assets [line items]    
Financial investments 1,954,844 1,973,030
Investments at fair value through other comprehensive income [member] | From 3 months to 1 year [member]    
Disclosure of financial assets [line items]    
Financial investments 1,917,043 528,185
Investments at fair value through other comprehensive income [member] | From 1 to 3 years [member]    
Disclosure of financial assets [line items]    
Financial investments 620,124 2,431,310
Investments at fair value through other comprehensive income [member] | From 3 to 5 years [member]    
Disclosure of financial assets [line items]    
Financial investments 1,234,166 2,205,297
Investments at fair value through other comprehensive income [member] | From 5 years onwards [member]    
Disclosure of financial assets [line items]    
Financial investments 15,573,220 13,239,983
Investments at fair value through other comprehensive income [member] | Equity instruments (without maturity) [member]    
Disclosure of financial assets [line items]    
Financial investments 556,149 458,268
Investments at amortized cost [member]    
Disclosure of financial assets [line items]    
Financial investments 3,883,579 3,784,912
Investments at amortized cost [member] | Up to 3 months [member]    
Disclosure of financial assets [line items]    
Financial investments 60,408 52,301
Investments at amortized cost [member] | From 3 months to 1 year [member]    
Disclosure of financial assets [line items]    
Financial investments 456,199 11,413
Investments at amortized cost [member] | From 1 to 3 years [member]    
Disclosure of financial assets [line items]    
Financial investments 147,236 422,956
Investments at amortized cost [member] | From 3 to 5 years [member]    
Disclosure of financial assets [line items]    
Financial investments 181,190 327,432
Investments at amortized cost [member] | From 5 years onwards [member]    
Disclosure of financial assets [line items]    
Financial investments 3,038,546 2,970,810
Investments at amortized cost [member] | Equity instruments (without maturity) [member]    
Disclosure of financial assets [line items]    
Financial investments S/ 0 S/ 0