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v3.20.1

EQUITY - Reserves within equity (Details) - PEN (S/) S/ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of equity [Line Items] |  |  |
Begining Balances | S/ 708,453 |  |
Increase (Decrease) in net unrealized gains on investments | 0 | S/ 0 | S/ 873,868
Transfer of net realized gains on investments to profit or loss | 0 | 0 | (517,006)
Change in net unrealized gains on cash flow hedges | (62,002) | 73,263 | (59,709)
Transfer of net realized losses on cash flow hedges to profit or loss | 35,059 | (43,643) | 2,278
Foreign exchange translation | (58,862) | 45,634 | (54,334)
Ending Balances | 1,088,189 | 708,453 |
Other reserves [Member] |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances | 708,453 | 1,455,594 | 1,209,731
Increase (Decrease) in net unrealized gains on investments | 703,790 | (562,545) | 873,868
Transfer of net realized gains on investments to profit or loss | 420,987 | (38,983) | (517,006)
Transfer of the recovery of the impairment loss on investments to profit or loss, Note 24 | (745) | (1,909) | (766)
Change in net unrealized gains on cash flow hedges | (62,002) | 73,263 | (59,709)
Transfer of net realized losses on cash flow hedges to profit or loss | 35,059 | (43,643) | 2,278
Foreign exchange translation | (58,862) | 45,634 | (54,334)
Balance at December 31, 2017 - Restated |  |  | 1,236,636
Change in accounting policy, Note 3(a)(vii) |  |  | (218,958)
Other reserves | (658,491) |  |
Ending Balances | 1,088,189 | 708,453 | 1,455,594
Investments in equity instruments |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances | 452,551 |  |
Increase (Decrease) in net unrealized gains on investments | 97,514 | 20,840 |
Balance at December 31, 2017 - Restated |  |  | 431,711
Change in accounting policy, Note 3(a)(vii) |  |  | 431,711
Other reserves | 0 |  |
Ending Balances | 550,065 | 452,551 |
Investments in debt instruments |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances | 229,470 |  |
Increase (Decrease) in net unrealized gains on investments | 606,276 | (583,385) |
Transfer of net realized gains on investments to profit or loss | 420,987 | (38,983) |
Transfer of the recovery of the impairment loss on investments to profit or loss, Note 24 | (745) | (1,909) |
Balance at December 31, 2017 - Restated |  |  | 853,747
Change in accounting policy, Note 3(a)(vii) |  |  | 853,747
Other reserves | 0 |  |
Ending Balances | 1,255,988 | 229,470 |
Insurance reserves |  |  |
Disclosure of equity [Line Items] |  |  |
Other reserves | (658,491) |  |
Ending Balances | (658,491) |  |
Available-for-sale investments |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances | 0 | 1,504,416 | 1,146,788
Increase (Decrease) in net unrealized gains on investments | 0 | 0 | 873,868
Transfer of net realized gains on investments to profit or loss | 0 | 0 | (517,006)
Transfer of the recovery of the impairment loss on investments to profit or loss, Note 24 | 0 | 0 | (766)
Change in net unrealized gains on cash flow hedges | 0 | 0 | 0
Transfer of net realized losses on cash flow hedges to profit or loss | 0 | 0 | 0
Foreign exchange translation | 0 | 0 | 0
Balance at December 31, 2017 - Restated |  |  | 0
Change in accounting policy, Note 3(a)(vii) |  |  | (1,504,416)
Other reserves | 0 |  |
Ending Balances | 0 | 0 | 1,504,416
Cash flow hedge reserve |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances | (3,161) | (32,781) | 24,650
Increase (Decrease) in net unrealized gains on investments | 0 | 0 | 0
Transfer of net realized gains on investments to profit or loss | 0 | 0 | 0
Transfer of the recovery of the impairment loss on investments to profit or loss, Note 24 | 0 | 0 | 0
Change in net unrealized gains on cash flow hedges | (62,002) | 73,263 | (59,709)
Transfer of net realized losses on cash flow hedges to profit or loss | 35,059 | (43,643) | 2,278
Foreign exchange translation | 0 | 0 | 0
Balance at December 31, 2017 - Restated |  |  | (32,781)
Change in accounting policy, Note 3(a)(vii) |  |  | 0
Other reserves | 0 |  |
Ending Balances | (30,104) | (3,161) | (32,781)
Foreign currency translation reserve |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances | 29,593 | (16,041) | 38,293
Increase (Decrease) in net unrealized gains on investments | 0 | 0 | 0
Transfer of net realized gains on investments to profit or loss | 0 | 0 | 0
Transfer of the recovery of the impairment loss on investments to profit or loss, Note 24 | 0 | 0 | 0
Change in net unrealized gains on cash flow hedges | 0 | 0 | 0
Transfer of net realized losses on cash flow hedges to profit or loss | 0 | 0 | 0
Foreign exchange translation | (58,862) | 45,634 | (54,334)
Balance at December 31, 2017 - Restated |  |  | (16,041)
Change in accounting policy, Note 3(a)(vii) |  |  | 0
Other reserves | 0 |  |
Ending Balances | S/ (29,269) | S/ 29,593 | S/ (16,041)

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