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FINANCIAL RISK MANAGEMENT, Sensitivity Analysis Regarding Change in Interest Rates (Details) - Interest Rate Risk [Member] - PEN (S/)
S/ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Soles at 50 Basis Points change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 0.50% 0.50%
Sensitivity of net profit S/ 45,487 S/ 66,151
Sensitivity of net economic value S/ 340,772 S/ 391,821
Soles at 75 Basis Points change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 0.75% 0.75%
Sensitivity of net profit S/ 68,231 S/ 99,226
Sensitivity of net economic value S/ 511,158 S/ 587,731
Soles at 100 Basis Points Change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 1.00% 1.00%
Sensitivity of net profit S/ 90,975 S/ 132,302
Sensitivity of net economic value S/ 681,544 S/ 783,642
Soles at 150 Basis Points Change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 1.50% 1.50%
Sensitivity of net profit S/ 136,462 S/ 198,453
Sensitivity of net economic value S/ 1,022,316 S/ 1,175,462
US Dollar at 50 Basis Points Change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 0.50% 0.50%
Sensitivity of net profit S/ 115,376 S/ 87,560
Sensitivity of net economic value S/ 413,488 S/ 345,185
US Dollar at 75 Basis Points Change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 0.75% 0.75%
Sensitivity of net profit S/ 173,064 S/ 131,341
Sensitivity of net economic value S/ 620,232 S/ 517,777
US Dollar at 100 Basis Points Change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 1.00% 1.00%
Sensitivity of net profit S/ 230,752 S/ 175,121
Sensitivity of net economic value S/ 826,976 S/ 690,369
US Dollar at 150 Basis Points Change [Member]    
Sensitivity Analysis Changes in Interest Rates [Abstract]    
Changes in basis points 1.50% 1.50%
Sensitivity of net profit S/ 346,128 S/ 262,681
Sensitivity of net economic value S/ 1,240,463 S/ 1,035,554