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TECHNICAL RESERVES, INSURANCE CLAIMS RESERVES AND UNEARNED PREMIUMS (Details 5) - PEN (S/) S/ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
PEN [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Claim reserve | S/ 519,317 | S/ 508,498
Amount of reserve after changes in interest rate by 100 positive base points | 473,067 | 462,992
Amount of reserve after changes in interest rate by 100 negative base points | 574,664 | 563,057
Amount of reserve after increase in mortality tables by 105 percent | 514,091 | 503,253
Amount of reserve after decrease in mortality tables by 95 percent | 524,801 | 514,003
Amount of variation of reserve on changes in interest rate by 100 positive base points | (46,250) | (45,506)
Amount of variation of reserve on changes in interest rate by 100 negative base points | 55,347 | 54,559
Amount of variation of reserve on increase in mortality tables by 105 percent | (5,226) | (5,245)
Amount of variation of reserve on decrease in mortality tables by 95 percent | S/ 5,484 | S/ 5,505
Percentage of variantion of reserve on changes in interest rate by 100 positive base points | (8.91%) | (8.95%)
Percentage of variantion of reserve on changes in interest rate by 100 negative base points | 10.66% | 10.73%
Percentage of variation of reserve on increase in mortality tables by 105 percent | (1.01%) | (1.03%)
Percentage of variation of reserve on decrease in mortality tables by 95 percent | 1.06% | 1.08%
US Dollars [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Claim reserve | S/ 2,682,536 | S/ 2,317,565
Amount of reserve after changes in interest rate by 100 positive base points | 2,428,338 | 2,089,212
Amount of reserve after changes in interest rate by 100 negative base points | 2,993,483 | 2,591,011
Amount of reserve after increase in mortality tables by 105 percent | 2,660,474 | 2,293,403
Amount of reserve after decrease in mortality tables by 95 percent | 2,705,711 | 2,336,095
Amount of variation of reserve on changes in interest rate by 100 positive base points | (254,198) | (228,352)
Amount of variation of reserve on changes in interest rate by 100 negative base points | 310,948 | 273,447
Amount of variation of reserve on increase in mortality tables by 105 percent | (22,062) | (24,161)
Amount of variation of reserve on decrease in mortality tables by 95 percent | S/ 23,176 | S/ 18,530
Percentage of variantion of reserve on changes in interest rate by 100 positive base points | (9.48%) | (9.85%)
Percentage of variantion of reserve on changes in interest rate by 100 negative base points | 11.59% | 11.80%
Percentage of variation of reserve on increase in mortality tables by 105 percent | (0.82%) | (1.04%)
Percentage of variation of reserve on decrease in mortality tables by 95 percent | 0.86% | 0.80%

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