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TECHNICAL RESERVES FOR INSURANCE CLAIMS AND PREMIUMS - Summary of detailed information about movement in technical insurance claim reserves (Details) - PEN (S/) S/ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | S/ 8,452,671 |
Ending balance | 9,950,233 | S/ 8,452,671
Life insurance contracts [member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 7,062,380 |
Ending balance | 8,457,046 | 7,062,380
General insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 1,156,368 |
Ending balance | 1,241,717 | 1,156,368
Health insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 233,923 |
Ending balance | 251,470 | 233,923
Technical claim reserve [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 7,086,001 | 6,262,908
Time course expenses and others | 64,098 | (117,965)
Unearned premium and other technical reserves variation, net | 12,713 | 79,349
Insurance subscriptions | 612,954 | 724,458
Adjustment by application of market rates | 666,556 |
Exchange difference and others | (68,317) | 137,251
Ending balance | 8,374,005 | 7,086,001
Technical claim reserve [Member] | Life insurance contracts [member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 6,329,512 | 5,599,777
Time course expenses and others | 67,989 | (117,965)
Unearned premium and other technical reserves variation, net | (61,834) | 1,901
Insurance subscriptions | 604,262 | 724,458
Adjustment by application of market rates | 666,556 |
Exchange difference and others | (57,801) | 121,341
Ending balance | 7,548,684 | 6,329,512
Technical claim reserve [Member] | General insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 593,938 | 513,826
Time course expenses and others | (3,891) | 0
Unearned premium and other technical reserves variation, net | 62,862 | 64,302
Insurance subscriptions | 8,692 | 0
Adjustment by application of market rates | 0 |
Exchange difference and others | (10,472) | 15,810
Ending balance | 651,129 | 593,938
Technical claim reserve [Member] | Health insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 162,551 | 149,305
Time course expenses and others | 0 | 0
Unearned premium and other technical reserves variation, net | 11,685 | 13,146
Insurance subscriptions | 0 | 0
Adjustment by application of market rates | 0 |
Exchange difference and others | (44) | 100
Ending balance | S/ 174,192 | S/ 162,551

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- Definition The increase in liabilities under insurance contracts and reinsurance contracts issued, resulting from additions other than through business combinations. [Refer: Liabilities under insurance contracts and reinsurance contracts issued; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG37_b&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in liabilities under issued insurance contracts and reinsurance contracts resulting from adjustments arising from the passage of time. [Refer: Liabilities under insurance contracts and reinsurance contracts issued] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The change in insurance liabilities resulting from the net exchange differences that arise on the translation of the financial statements into a different presentation currency, and on the translation of a foreign operation into the presentation currency. [Refer: Liabilities under insurance contracts and reinsurance contracts issued] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG37 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG37_f&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in reinsurance assets resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Reinsurance assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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- Definition The increase (decrease) in liabilities under insurance contracts and reinsurance contracts issued resulting from acquisitions from, or transfers to, other insurers. [Refer: Liabilities under insurance contracts and reinsurance contracts issued] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph IG37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_IG37_e&doctype=Implementation%20Guidance&book=b -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2019-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2019-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2019-03-27 + Details
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