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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, 2020 | Dec. 31, 2019
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | S/ 9,950,233 |
Ending balance | 11,675,076 | S/ 9,950,233
Life insurance contracts [member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 8,457,046 |
Ending balance | 10,072,788 | 8,457,046
General insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 1,241,717 |
Ending balance | 1,286,293 | 1,241,717
Health insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 251,470 |
Ending balance | 315,995 | 251,470
Technical claim reserve [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 8,374,005 | 7,086,001
Time course expenses and others | 75,933 | 64,098
Unearned premium and other technical reserves variation, net | (26,816) | 12,713
Insurance subscriptions | 605,090 | 612,954
Adjustment by application of market rates | 263,820 | 666,556
Exchange difference and others | 332,570 | (68,317)
Ending balance | 9,624,602 | 8,374,005
Technical claim reserve [Member] | Life insurance contracts [member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 7,548,684 | 6,329,512
Time course expenses and others | 75,115 | 67,989
Unearned premium and other technical reserves variation, net | 1,006 | (61,834)
Insurance subscriptions | 599,149 | 604,262
Adjustment by application of market rates | 263,820 | 666,556
Exchange difference and others | 296,958 | (57,801)
Ending balance | 8,784,732 | 7,548,684
Technical claim reserve [Member] | General insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 651,129 | 593,938
Time course expenses and others | 818 | (3,891)
Unearned premium and other technical reserves variation, net | (36,323) | 62,862
Insurance subscriptions | 5,941 | 8,692
Adjustment by application of market rates | 0 | 0
Exchange difference and others | 35,398 | (10,472)
Ending balance | 656,963 | 651,129
Technical claim reserve [Member] | Health insurance contracts [Member] |  |
Disclosure of insurance claim reserves and technical reserves [Line Items] |  |
Beginning balance | 174,192 | 162,551
Time course expenses and others | 0 | 0
Unearned premium and other technical reserves variation, net | 8,501 | 11,685
Insurance subscriptions | 0 | 0
Adjustment by application of market rates | 0 | 0
Exchange difference and others | 214 | (44)
Ending balance | S/ 182,907 | S/ 174,192

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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 2020-01-01 -Paragraph IG37 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_IG37_b&doctype=Implementation%20Guidance&book=b -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2020-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph IG37 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_IG37_f&doctype=Implementation%20Guidance&book=b -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2020-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2020-01-01 + 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 2020-01-01 -Paragraph IG37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_IG37_e&doctype=Implementation%20Guidance&book=b -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Note Expiry date 2021-01-01 -Name IFRS -Number 4 -IssueDate 2020-01-01 -Paragraph 37 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2020-en-b&anchor=para_37_e&doctype=Standard&book=b -URIDate 2020-01-01 + Details
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