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TECHNICAL RESERVES FOR INSURANCE CLAIMS AND PREMIUMS (Details Textual) - PEN (S/)
S/ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Disclosure of insurance claim reserves and technical reserves [Line Items]    
Provisions for future non-participating benefits S/ 8,452,671 S/ 7,443,760
Life insurance contracts [member]    
Disclosure of insurance claim reserves and technical reserves [Line Items]    
Provisions for future non-participating benefits 7,062,380 6,226,648
Claims incurred but not reported 314,500 282,400
General insurance contracts [Member]    
Disclosure of insurance claim reserves and technical reserves [Line Items]    
Provisions for future non-participating benefits 1,156,368 998,434
Claims incurred but not reported 16,700 11,300
Health insurance contracts [Member]    
Disclosure of insurance claim reserves and technical reserves [Line Items]    
Provisions for future non-participating benefits 233,923 218,678
Claims incurred but not reported 50,200 47,600
Mathematic reserve [Member] | Life insurance contracts [member]    
Disclosure of insurance claim reserves and technical reserves [Line Items]    
Provisions for future non-participating benefits S/ 4,073,300 S/ 3,514,400