v3.26.1
Debt - Summary of Changes in Consolidated Debt (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure of Roll Forward Related to the Promissory Notes [Roll Forward]    
Debt issue related costs $ 5,068,080 $ 622,591
Expense related to issuance of debt (4,277,084) (1,900,454)
Amortized cost 163,629 2,127,973
Financed public works contracts    
Disclosure of Roll Forward Related to the Promissory Notes [Roll Forward]    
At the beginning of the year 1,978,772,255 1,794,470,357
Loans obtained - financing institutions 897,917,722 1,056,523,887
Debt payments (1,169,025,539) (1,148,872,172)
Accrued interest 152,373,946 163,614,450
Interest (paid) (149,914,573) (148,380,958)
Foreign exchange (178,825,721) 261,416,691
At the end of the year $ 1,531,298,090 $ 1,978,772,255