v3.26.1
Income taxes - Reconciliation of the statutory income tax rate and effective income tax rate (Details)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2025
MXN ($)
Dec. 31, 2024
MXN ($)
Dec. 31, 2023
MXN ($)
Reconciliation of statutory income tax rate and the effective income tax rate as a percentage of net income before income tax        
Income before income taxes $ 423,970 $ 7,631,961 $ 7,069,238 $ 7,059,868
Current ISR   2,485,134 2,205,939 2,167,380
Deferred ISR   (218,461) (72,925) (127,938)
Income tax expense $ 125,918 2,266,673 2,133,014 2,039,442
Add effects of permanent differences, primarily, non-deductible expenses and inflationary effects for financial and tax purposes.   22,915 (12,243) 78,518
Statutory rate   $ 2,289,588 $ 2,120,771 $ 2,117,960
Effective rate (as a percent) 29.70% 29.70% 28.89% 28.89%
Add effects of permanent differences, primarily, non-deductible expenses and inflationary effects for financial and tax purposes. (as a percent) 0.30% 0.30% 1.11% 1.11%
Statutory rate (as a percent) 30.00% 30.00% 30.00% 30.00%