Cash and due from banks and inter-bank funds - Summary of legal reserve (Detail) - PEN (S/) S/ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Cash and Cash Equivalent [Line Items] | ||
| Legal reserve | S/ 8,206,501 | S/ 8,613,604 |
| Non-mandatory reserve | 2,632,767 | 1,573,148 |
| Cash balances not subject to legal reserve | 54 | 253 |
| Total | 10,839,322 | 10,187,005 |
| Deposits in the BCRP [member] | ||
| Cash and Cash Equivalent [Line Items] | ||
| Legal reserve | 6,149,956 | 5,969,218 |
| Cash in vaults {member] | ||
| Cash and Cash Equivalent [Line Items] | ||
| Legal reserve | 2,056,545 | 2,644,386 |
| Overnight deposits in BCRP [member] | ||
| Cash and Cash Equivalent [Line Items] | ||
| Non-mandatory reserve | 1,580,610 | 564,600 |
| Term deposits in BCRP [Member] | ||
| Cash and Cash Equivalent [Line Items] | ||
| Non-mandatory reserve | 760,000 | 800,000 |
| Cash and clearing [member] | ||
| Cash and Cash Equivalent [Line Items] | ||
| Non-mandatory reserve | S/ 292,157 | S/ 208,548 |