v3.26.1
Financial investments - Summary of stages as indicated by IFRS 9 (Detail) - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost S/ 25,182,976 S/ 24,162,717
Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 24,677,017 23,116,667
Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 428,402 1,046,050
Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 77,557
Sovereign bonds of the republic of peru [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 12,660,521 11,643,674
Sovereign bonds of the republic of peru [member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 12,660,521 11,643,674
Sovereign bonds of the republic of peru [member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Sovereign bonds of the republic of peru [member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Corporate, leasing and subordinated bonds [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 9,201,679 9,172,945
Corporate, leasing and subordinated bonds [member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 8,695,720 8,126,895
Corporate, leasing and subordinated bonds [member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 428,402 1,046,050
Corporate, leasing and subordinated bonds [member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 77,557
Negotiable certificates of deposit issued by the BCRP [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 2,057,692 2,113,924
Negotiable certificates of deposit issued by the BCRP [member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 2,057,692 2,113,924
Negotiable certificates of deposit issued by the BCRP [member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Negotiable certificates of deposit issued by the BCRP [member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Global bonds of the republic of peru [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 548,040 521,639
Global bonds of the republic of peru [member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 548,040 521,639
Global bonds of the republic of peru [member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 0
Global bonds of the republic of peru [member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Bonds guaranteed by the peruvian government [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 483,353 556,554
Bonds guaranteed by the peruvian government [member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 483,353 556,554
Bonds guaranteed by the peruvian government [member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Bonds guaranteed by the peruvian government [member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Term Deposits [Member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 133,066 86,515
Term Deposits [Member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 133,066 86,515
Term Deposits [Member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Term Deposits [Member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Treasury Bonds Of The United States Of America [Member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 60,274 52,525
Treasury Bonds Of The United States Of America [Member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 60,274 52,525
Treasury Bonds Of The United States Of America [Member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 0
Treasury Bonds Of The United States Of America [Member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 0
Global Bonds of The United States of Mexico [Member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 25,000 14,941
Global Bonds of The United States of Mexico [Member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 25,000 14,941
Global Bonds of The United States of Mexico [Member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Global Bonds of The United States of Mexico [Member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost
Global Bonds of the Republic of Chile [Member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 11,380  
Global Bonds of the Republic of Chile [Member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 11,380  
Global Bonds of the Republic of Chile [Member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost  
Global Bonds of the Republic of Chile [Member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost  
Negotiable Certificates of Deposit from financial institutions [Member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 1,971  
Negotiable Certificates of Deposit from financial institutions [Member] | Stage 1 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost 1,971  
Negotiable Certificates of Deposit from financial institutions [Member] | Stage 2 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost  
Negotiable Certificates of Deposit from financial institutions [Member] | Stage 3 [member]    
Disclosure of financial assets [line items]    
Debt instruments measured at fair value through other comprehensive income and at amortized cost