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ACCOUNTS RECEIVABLE AND PAYABLE FROM INSURANCE CONTRACTS - Additional Information (Details) - PEN (S/)
S/ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of Insurance Contracts Explanatory [Line Items]    
Premium and other policies receivable S/ 838,731 S/ 887,273
Insurance [Member]    
Disclosure Of Insurance Contracts Explanatory [Line Items]    
Unearned portion of premiums ceded to reinsurers S/ 201,000 S/ 152,900