DEPOSITS AND OBLIGATIONS - time deposits classified by maturity (Details) - PEN (S/) S/ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Disclosure of Deposits and Obligations [Line Items] | ||
| Balances on demand deposits from customers | S/ 32,853,576 | S/ 30,426,744 |
| Overdue 90 days [Member] | ||
| Disclosure of Deposits and Obligations [Line Items] | ||
| Balances on demand deposits from customers | 14,674,773 | 14,771,836 |
| From 3 months to 1 year [Member] | ||
| Disclosure of Deposits and Obligations [Line Items] | ||
| Balances on demand deposits from customers | 8,975,269 | 8,177,435 |
| From 1 to 3 years [Member] | ||
| Disclosure of Deposits and Obligations [Line Items] | ||
| Balances on demand deposits from customers | 6,096,891 | 4,506,612 |
| From 3 to 5 years [Member] | ||
| Disclosure of Deposits and Obligations [Line Items] | ||
| Balances on demand deposits from customers | 819,446 | 846,696 |
| More than 5 years [Member] | ||
| Disclosure of Deposits and Obligations [Line Items] | ||
| Balances on demand deposits from customers | S/ 2,287,197 | S/ 2,124,165 |