Investment property - Summary of sensitivity analysis in valuation of investment property (Detail) - Investment property [member] - PEN (S/) S/ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Average growth rate of rental income | ||
| Disclosure of detailed information about investment property [line items] | ||
| Increase | 0.25% | |
| Decrease | 0.25% | |
| Increase | S/ 22,842 | S/ 3,839 |
| Decrease | S/ (21,966) | (3,837) |
| Long-term inflation | ||
| Disclosure of detailed information about investment property [line items] | ||
| Increase | 0.25% | |
| Decrease | 0.25% | |
| Increase | S/ 20,633 | 15,836 |
| Decrease | S/ (19,874) | (15,404) |
| Discount rate | ||
| Disclosure of detailed information about investment property [line items] | ||
| Increase | 0.50% | |
| Decrease | 0.50% | |
| Increase | S/ (70,400) | (56,868) |
| Decrease | S/ 83,611 | S/ 66,193 |