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EQUITY (Details 1) - PEN (S/) S/ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Disclosure of equity [Line Items] |  |  |
Increase (Decrease) in net unrealized gains on investments | S/ 0 | S/ 873,868 | S/ 554,869
Transfer of net realized gains on investments to profit or loss, net of realized loss | 0 | (517,006) | (75,444)
Transfer of the impairment loss on investments to profit or loss, Note 23 | 0 | 766 | 14,459
Change in net unrealized gains on cash flow hedges | 73,263 | (59,709) | (16,724)
Transfer of net realized losses on cash flow hedges to profit or loss | (43,643) | 2,278 | (3,676)
Foreign exchange translation | 45,634 | (54,334) | (26,448)
Ending Balances | 708,453 | 1,455,594 |
Other reserves [Member] |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances |  | 1,209,731 | 762,695
Increase (Decrease) in net unrealized gains on investments | (562,545) | 873,868 | 554,869
Transfer of net realized gains on investments to profit or loss, net of realized loss | (38,983) | (517,006) | (75,444)
Transfer of the impairment loss on investments to profit or loss, Note 23 |  | 766 | 14,459
Credit loss of investments recorded against profit or loss, Note 23 | (1,909) |  |
Change in net unrealized gains on cash flow hedges | 73,263 | (59,709) | (16,724)
Change in accounting policy, Note 3(a)(i) | (218,958) |  |
Transfer of net realized losses on cash flow hedges to profit or loss | (43,643) | 2,278 | (3,676)
Foreign exchange translation | 45,634 | (54,334) | (26,448)
Ending Balances | 708,453 | 1,455,594 | 1,209,731
Other reserves [Member] | Previously stated [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Ending Balances |  | 1,236,636 |
Reserve for available-for-sale investments [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances |  | 1,146,788 | 652,904
Increase (Decrease) in net unrealized gains on investments | 0 | 873,868 | 554,869
Transfer of net realized gains on investments to profit or loss, net of realized loss | 0 | (517,006) | (75,444)
Transfer of the impairment loss on investments to profit or loss, Note 23 |  | 766 | 14,459
Credit loss of investments recorded against profit or loss, Note 23 | 0 |  |
Change in net unrealized gains on cash flow hedges | 0 | 0 | 0
Change in accounting policy, Note 3(a)(i) | (1,504,416) |  |
Transfer of net realized losses on cash flow hedges to profit or loss | 0 | 0 | 0
Foreign exchange translation | 0 | 0 | 0
Ending Balances | 0 | 1,504,416 | 1,146,788
Reserve for available-for-sale investments [member] | Previously stated [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Ending Balances |  | 0 |
Reserve for cash flow hedges [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances |  | 24,650 | 45,050
Increase (Decrease) in net unrealized gains on investments | 0 | 0 | 0
Transfer of net realized gains on investments to profit or loss, net of realized loss | 0 | 0 | 0
Transfer of the impairment loss on investments to profit or loss, Note 23 |  | 0 | 0
Credit loss of investments recorded against profit or loss, Note 23 | 0 |  |
Change in net unrealized gains on cash flow hedges | 73,263 | (59,709) | (16,724)
Change in accounting policy, Note 3(a)(i) | 0 |  |
Transfer of net realized losses on cash flow hedges to profit or loss | (43,643) | 2,278 | (3,676)
Foreign exchange translation | 0 | 0 | 0
Ending Balances | (3,161) | (32,781) | 24,650
Reserve for cash flow hedges [member] | Previously stated [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Ending Balances |  | (32,781) |
Foreign exchange translation [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances |  | 38,293 | 64,741
Increase (Decrease) in net unrealized gains on investments | 0 | 0 | 0
Transfer of net realized gains on investments to profit or loss, net of realized loss | 0 | 0 | 0
Transfer of the impairment loss on investments to profit or loss, Note 23 |  | 0 | 0
Credit loss of investments recorded against profit or loss, Note 23 | 0 |  |
Change in net unrealized gains on cash flow hedges | 0 | 0 | 0
Change in accounting policy, Note 3(a)(i) | 0 |  |
Transfer of net realized losses on cash flow hedges to profit or loss | 0 | 0 | 0
Foreign exchange translation | 45,634 | (54,334) | (26,448)
Ending Balances | 29,593 | (16,041) | 38,293
Foreign exchange translation [member] | Previously stated [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Ending Balances |  | (16,041) |
Reserve for investments at fair value through other comprehensive income |  |  |
Disclosure of equity [Line Items] |  |  |
Begining Balances |  | 0 | 0
Increase (Decrease) in net unrealized gains on investments | (562,545) | 0 | 0
Transfer of net realized gains on investments to profit or loss, net of realized loss | (38,983) | 0 | 0
Transfer of the impairment loss on investments to profit or loss, Note 23 |  | 0 | 0
Credit loss of investments recorded against profit or loss, Note 23 | (1,909) |  |
Change in net unrealized gains on cash flow hedges | 0 | 0 | 0
Change in accounting policy, Note 3(a)(i) | 1,285,458 |  |
Transfer of net realized losses on cash flow hedges to profit or loss | 0 | 0 | 0
Foreign exchange translation | 0 | 0 | 0
Ending Balances | S/ 682,021 | 0 | S/ 0
Reserve for investments at fair value through other comprehensive income | Previously stated [member] |  |  |
Disclosure of equity [Line Items] |  |  |
Ending Balances |  | S/ 1,285,458 |

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