v3.26.1
Derivative Financial Instruments - Details of Quantitative Disclosure of Debt Cash Flow Maturities (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2025
MXN ($)
$ / $
$ / ¥
$ / €
$ / MXV
$ / SFr
$ / £
Dec. 31, 2024
MXN ($)
$ / SFr
$ / ¥
$ / $
$ / €
$ / MXV
$ / £
Disclosure of detailed information about financial instruments [line items]    
Currency exchange rate | $ / $ 17.9667  
U.S    
Disclosure of detailed information about financial instruments [line items]    
Currency exchange rate | $ / $ 17.9667 20.2683
Japanese yen    
Disclosure of detailed information about financial instruments [line items]    
Currency exchange rate | $ / ¥ 0.1146 0.1289
Pounds sterling    
Disclosure of detailed information about financial instruments [line items]    
Currency exchange rate | $ / £ 24.1607 25.3860
UDIs    
Disclosure of detailed information about financial instruments [line items]    
Currency exchange rate | $ / MXV 8.665387 8.340909
Euro    
Disclosure of detailed information about financial instruments [line items]    
Currency exchange rate | $ / € 21.0974 20.9868
Swiss francs    
Disclosure of detailed information about financial instruments [line items]    
Currency exchange rate | $ / SFr 22.6728 22.3721
Total Carrying Value    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 1,501,486,617 $ 1,940,045,761
Total Carrying Value | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 1,238,612,005 1,461,236,994
Total Carrying Value | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 1,103,023,798 $ 1,230,515,611
Average interest rate (%) 6.61% 6.90%
Total Carrying Value | Fixed rate (Japanese yen)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 9,165,982 $ 10,306,353
Average interest rate (%) 0.54% 0.54%
Total Carrying Value | Fixed rate (pound sterling)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 0 $ 11,412,443
Average interest rate (%) 0.00% 3.75%
Total Carrying Value | Fixed rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 31,361,411 $ 31,318,419
Average interest rate (%) 7.47% 7.47%
Total Carrying Value | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 43,138,222 $ 41,592,362
Average interest rate (%) 4.10% 4.10%
Total Carrying Value | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 51,922,592 $ 136,091,806
Average interest rate (%) 4.20% 4.24%
Total Carrying Value | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 262,874,612 $ 478,808,767
Total Carrying Value | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 158,405,688 279,865,261
Total Carrying Value | Variable rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt   0
Total Carrying Value | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 104,468,924 198,943,506
Maturity Period One    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 315,416,498 386,492,023
Maturity Period One | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 80,077,882 81,292,407
Maturity Period One | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 12,519,293 35,260,336
Maturity Period One | Fixed rate (Japanese yen)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 9,165,982  
Maturity Period One | Fixed rate (pound sterling)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 11,412,443
Maturity Period One | Fixed rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 31,361,411 0
Maturity Period One | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 27,031,196  
Maturity Period One | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 34,619,628
Maturity Period One | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 235,338,616 305,199,616
Maturity Period One | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 150,419,184 200,188,707
Maturity Period One | Variable rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt   0
Maturity Period One | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 84,919,432 105,010,909
Maturity Period Two    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 84,555,621 320,150,122
Maturity Period Two | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 79,116,542 175,210,262
Maturity Period Two | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 64,366,606 86,518,874
Maturity Period Two | Fixed rate (Japanese yen)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 10,306,353
Maturity Period Two | Fixed rate (pound sterling)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt   0
Maturity Period Two | Fixed rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 31,318,419
Maturity Period Two | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 26,089,817
Maturity Period Two | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 14,749,936 20,976,799
Maturity Period Two | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 5,439,079 144,939,860
Maturity Period Two | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 2,304,392 70,666,768
Maturity Period Two | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 3,134,687 74,273,092
Maturity Period Three    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 158,916,760 153,134,281
Maturity Period Three | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 141,217,463 147,384,893
Maturity Period Three | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 126,151,662 121,204,555
Maturity Period Three | Fixed rate (Japanese yen)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt   0
Maturity Period Three | Fixed rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt   0
Maturity Period Three | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 6,251,057 0
Maturity Period Three | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 8,814,744 26,180,338
Maturity Period Three | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 17,699,297 5,749,388
Maturity Period Three | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 2,167,894 2,599,593
Maturity Period Three | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 15,531,403 3,149,795
Maturity Period Four    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 99,401,877 113,244,101
Maturity Period Four | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 96,948,569 95,267,088
Maturity Period Four | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 70,651,043 63,114,264
Maturity Period Four | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 6,016,293
Maturity Period Four | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 26,297,526 26,136,531
Maturity Period Four | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 2,453,308 17,977,013
Maturity Period Four | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 1,569,906 2,445,609
Maturity Period Four | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 883,402 15,531,404
Maturity Period Five    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 141,672,703 76,325,207
Maturity Period Five | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 139,997,379 73,575,884
Maturity Period Five | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 137,936,993 47,437,960
Maturity Period Five | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt   0
Maturity Period Five | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 2,060,386 26,137,924
Maturity Period Five | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 1,675,324 2,749,323
Maturity Period Five | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 1,675,324 1,771,017
Maturity Period Five | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 978,306
Maturity Period After Year Five    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 701,523,158 890,700,027
Maturity Period After Year Five | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 701,254,170 888,506,460
Maturity Period After Year Five | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 691,398,201 876,979,622
Maturity Period After Year Five | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 9,855,969 9,486,252
Maturity Period After Year Five | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 2,040,586
Maturity Period After Year Five | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 268,988 2,193,567
Maturity Period After Year Five | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 268,988 2,193,567
Maturity Period After Year Five | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 0
Fair Value    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 1,432,095,661 1,745,481,072
Fair Value | Total fixed rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 1,192,957,438 1,320,652,952
Fair Value | Fixed rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 1,057,574,064 1,101,026,216
Fair Value | Fixed rate (Japanese yen)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 9,114,175 9,770,917
Fair Value | Fixed rate (pound sterling)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 0 11,040,295
Fair Value | Fixed rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 31,278,825 28,727,389
Fair Value | Fixed rate (UDIs)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 41,535,025 35,817,620
Fair Value | Fixed rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 53,455,349 134,270,515
Fair Value | Total variable rate debt    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 239,138,223 424,828,120
Fair Value | Variable rate (U.S. dollars)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt 132,067,127 222,992,037
Fair Value | Variable rate (euros)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt   0
Fair Value | Variable rate (pesos)    
Disclosure of detailed information about financial instruments [line items]    
Outstanding debt $ 107,071,096 $ 201,836,083