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Improvements to concession assets - net - Summary of Improvements to Concession Assets (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Construction in-progress [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance $ 12,369,898 $ 6,568,212 $ 5,352,578
Additions 6,917,645 7,311,966 4,233,640
Transfers (7,522,852) (1,474,633) (2,997,862)
Currency translation effect 128,671 (35,647) (20,144)
Ending balance 11,893,362 12,369,898 6,568,212
Improvements to concession assets [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance 26,503,586 22,105,909 19,032,526
Additions 1,662,838 3,466,108 346,931
Divestitures (45,073) (45,609) (29,567)
Transfers 7,522,852 1,474,633 2,997,862
Currency translation effect 803,410 (497,455) (241,843)
Ending balance 36,447,613 26,503,586 22,105,909
Total investment [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance 38,873,484 28,674,121 24,385,104
Additions 8,580,483 10,778,074 4,580,571
Divestitures (45,073) (45,609) (29,567)
Currency translation effect 932,081 (533,102) (261,987)
Ending balance 48,340,975 38,873,484 28,674,121
Investment Net [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance 28,997,244 20,260,493 16,857,852
Additions 7,046,845 9,200,013 3,584,900
Divestitures (9,630) (35,113) (15,499)
Currency translation effect 577,857 (428,149) (166,760)
Ending balance 36,612,316 28,997,244 20,260,493
Accumulated amortization [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance (9,876,240) (8,413,628) (7,527,252)
Additions (1,533,638) (1,578,061) (995,671)
Divestitures 35,443 10,496 14,068
Currency translation effect (354,224) 104,953 95,227
Ending balance $ (11,728,659) $ (9,876,240) $ (8,413,628)