MERGER AND ACQUISITIONS - Acquisitions (Details)
S/ in Millions, $ in Millions, $ in Millions
Dec. 01, 2019
COP ($)
Dec. 01, 2019
PEN (S/)
Nov. 01, 2019
COP ($)
Nov. 01, 2019
PEN (S/)
Jul. 31, 2019
Jun. 28, 2019
Mar. 27, 2019
USD ($)
Mar. 27, 2019
PEN (S/)
Jan. 31, 2019
USD ($)
Jan. 31, 2019
PEN (S/)
Disclosure of detailed information about business combination [line items]                    
Consideration paid | S/   S/ 255.7                
Credicorp Holding Colombia S.A.S | Bancompartir                    
Disclosure of detailed information about business combination [line items]                    
Percentage of share capital acquired 77.46% 77.46%     2.97% 74.49%        
Consideration paid | $ $ 265,251.7                  
Credicorp Holding Colombia S.A.S | Ultraserfinco S.A.                    
Disclosure of detailed information about business combination [line items]                    
Percentage of share capital acquired     84.20% 84.20%            
Consideration paid     $ 118,251.0 S/ 116.8            
Credicorp Capital Fiduciaria S.A | Ultraserfinco S.A.                    
Disclosure of detailed information about business combination [line items]                    
Percentage of share capital acquired     15.80% 15.80%            
Consideration paid     $ 22,312.0 S/ 22.1            
Krealo SpA | Multicaja S.A                    
Disclosure of detailed information about business combination [line items]                    
Percentage of share capital acquired             100.00% 100.00%    
Consideration paid             $ 6.1 S/ 19.6    
Krealo SpA | Tenpo SpA                    
Disclosure of detailed information about business combination [line items]                    
Consideration paid             $ 12.5 S/ 41.1    
Grupo Crdito S.A | Culqi                    
Disclosure of detailed information about business combination [line items]                    
Percentage of share capital acquired                 100.00% 100.00%
Consideration paid                 $ 4.0 S/ 13.3