Income taxes - Tax loss carryforwards (Details) - MXN ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Income taxes | |||
| Tax loss carryforwards | $ 378,664 | ||
| Tax loss carryforwards utilized | 79,482 | $ 86,885 | $ 199,537 |
| Other subsidiary losses | |||
| Income taxes | |||
| Tax loss carryforwards | $ 93,711 | ||
| Duration of tax losses | 10 years | ||
| 2003 | |||
| Income taxes | |||
| Tax loss carryforwards | $ 126,307 | ||
| 2004 | |||
| Income taxes | |||
| Tax loss carryforwards | 170,307 | ||
| 2005 | |||
| Income taxes | |||
| Tax loss carryforwards | 1,837 | ||
| 2007 | |||
| Income taxes | |||
| Tax loss carryforwards | 3,348 | ||
| 2008 | |||
| Income taxes | |||
| Tax loss carryforwards | 5,883 | ||
| 2018 | |||
| Income taxes | |||
| Tax loss carryforwards | 7,258 | ||
| 2019 | |||
| Income taxes | |||
| Tax loss carryforwards | 7,601 | ||
| 2020 | |||
| Income taxes | |||
| Tax loss carryforwards | 29,551 | ||
| 2021 | |||
| Income taxes | |||
| Tax loss carryforwards | $ 26,572 |