Financial risk management - Interest rate risk management (Details) - MXN ($) $ in Thousands |
Dec. 31, 2025 |
Dec. 22, 2025 |
Jan. 23, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|---|---|
| Financial risk management | |||||
| Long-term debt | $ 13,450,000 | $ 10,700,000 | $ 10,700,000 | ||
| Interest rate risk | |||||
| Financial risk management | |||||
| Long-term debt | $ 13,450,000 | $ 10,700,000 | $ 10,700,000 | ||
| Percent of long-term debt with fixed interest rate (as a percent) | 69.10% | 68.80% | 68.80% | ||
| Percent of long-term debt with variable interest rate (as a percent) | 30.90% | 31.20% | 31.20% | ||
| Interest rate risk | Variable interest rate | |||||
| Financial risk management | |||||
| Interest rate (as a percent) | 7.2584% | 10.4791% |