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SIGNIFICANT TRANSACTIONS - Acquisition of non-controlling interest of Mibanco, Banco de la Microempresa S.A. (Mibanco) (Details)
S/ in Millions
1 Months Ended 12 Months Ended
May 31, 2020
Dec. 31, 2020
item
Dec. 01, 2019
PEN (S/)
Disclosure of detailed information about business combination [line items]      
Consideration paid | S/     S/ 255.7
Percentage of GDP 31.00% 20.00%  
Chile      
Disclosure of detailed information about business combination [line items]      
Percentage of GDP   12.00%  
Number of fiscal stimulus packages   3  
Number of withdrawals of individual pension fund accounts   2  
Percentage of withdrawal of individual pension fund accounts   10.00%