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TECHNICAL RESERVES FOR INSURANCE CLAIMS AND PREMIUMS (Details 3) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Pension insurance - Temporary Regime / SCTR [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Explanation of process used to determine assumptions to measure recognised assets, liabilities, income and expense arising from insurance contracts | B-85 and MI-85 | B-85 and MI-85
Mortality technical rate in soles used in estimation of insurance reserves | 3.00% | 3.00%
Pension insurance - Definitive Regime [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Explanation of process used to determine assumptions to measure recognised assets, liabilities, income and expense arising from insurance contracts | B-85 and MI-85 | B-85 and MI-85
Mortality technical rate in Nominal dollars used in estimation of insurance reserves | 4.40% | 4.66%
Mortality technical rate in soles used in estimation of insurance reserves | 2.96% | 3.31%
Pension insurance - Definitive Regime / SCTR [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Explanation of process used to determine assumptions to measure recognised assets, liabilities, income and expense arising from insurance contracts | B-85 adjusted and MI-85 | B-85 adjusted and MI-85
Mortality technical rate in Nominal dollars used in estimation of insurance reserves | 4.40% | 4.66%
Mortality technical rate in adjusted soles used in estimation of insurance reserves | 5.82% | 6.35%
Mortality technical rate in adjusted dollars used in estimation of insurance reserves | 4.40% | 4.66%
Pension insurance - Temporary Regime / SCTR (Longevity) [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Explanation of process used to determine assumptions to measure recognised assets, liabilities, income and expense arising from insurance contracts | SPP-S-2017- and SPP-I-2017 | SPP-S-2017- and SPP-I-2017
Individual life [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Explanation of process used to determine assumptions to measure recognised assets, liabilities, income and expense arising from insurance contracts | CSO 80 adjusted | CSO 80 adjusted
Annuity [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Explanation of process used to determine assumptions to measure recognised assets, liabilities, income and expense arising from insurance contracts | SPP-S-2017 and SPP-I- 2017 | SPP-S-2017 and SPP-I- 2017
Bottom of range [member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in us dollars used in estimation of insurance reserves | 3.81% |
Bottom of range [member] | Pension insurance - Definitive Regime / SCTR [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in soles used in estimation of insurance reserves | 3.00% | 3.00%
Bottom of range [member] | Pension insurance - Temporary Regime / SCTR (Longevity) [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in soles vac used in estimation of insurance reserves | 3.791% | 3.81%
Bottom of range [member] | Individual life [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in us dollars used in estimation of insurance reserves | 4.00% | 4.00%
Bottom of range [member] | Annuity [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in us dollars used in estimation of insurance reserves |  | 2.90%
Mortality technical rate in soles used in estimation of insurance reserves | 2.50% | 2.50%
Top of range [member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in us dollars used in estimation of insurance reserves | 7.99% |
Top of range [member] | Pension insurance - Definitive Regime / SCTR [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in soles used in estimation of insurance reserves | 2.96% | 3.38%
Top of range [member] | Pension insurance - Temporary Regime / SCTR (Longevity) [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in soles vac used in estimation of insurance reserves | 3.915% | 3.88%
Top of range [member] | Individual life [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in us dollars used in estimation of insurance reserves | 5.00% | 5.00%
Top of range [member] | Annuity [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Mortality technical rate in us dollars used in estimation of insurance reserves |  | 7.93%
Mortality technical rate in soles used in estimation of insurance reserves | 5.25% | 5.25%

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