v3.26.1
Financial risk management - Summary of Expected Loss by Post-Model Adjustments (Detail) - PEN (S/)
S/ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure S/ 1,603,397 S/ 1,744,415
Expected loss (according to Model)    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 1,452,350 1,575,819
Subsequent Adjustments to the Model [Member]    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 151,047 168,596
Commercial loans    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 174,733 189,557
Commercial loans | Expected loss (according to Model)    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 159,186 189,557
Commercial loans | Subsequent Adjustments to the Model [Member]    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 15,547  
Consumer    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 1,269,584 1,372,857
Consumer | Expected loss (according to Model)    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 1,142,086 1,218,011
Consumer | Subsequent Adjustments to the Model [Member]    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 127,498 154,846
Mortgage loans [member]    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 75,836 93,797
Mortgage loans [member] | Expected loss (according to Model)    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 67,834 80,047
Mortgage loans [member] | Subsequent Adjustments to the Model [Member]    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 8,002 13,750
Small and micro-business loans [member]    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure 83,244 88,204
Small and micro-business loans [member] | Expected loss (according to Model)    
Disclosure Of Detailed Information About Expected Credit Loss After Model And Post Model Adjustments [Line Items]    
Credit exposure S/ 83,244 S/ 88,204