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Property, Plant and Equipment, Net - Schedule of Property, Plant and Equipment, Net (Detail)
$ in Thousands, $ in Millions
 12 Months Ended
Dec. 31, 2023
MXN ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
MXN ($)
Dec. 31, 2021
MXN ($)
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance $ 657,226,210   $ 731,196,679 $ 722,929,631
Additions 144,607,028   227,067,886 231,539,820
Retirements (10,591,479) [1],[2]   (97,343,915) [3] (92,643,640) [4]
Business combinations [5]     1,475,682  
Revaluation adjustments (5,394,784) [6]   (51,540,632) [7]  
Transfers (4,368,760)   4,121,663 (1,966,088)
Incorporation (merger, spin-off, sale) [8]     (14,851,922)  
Effect of translation of foreign subsidiaries (50,848,185) [9]   (23,287,597) (17,201,315)
Depreciation of the year (101,979,126)   (111,368,308) (111,461,729) [10]
Ending balance 628,650,904 $ 37,213 657,226,210 731,196,679
Cost [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 1,317,191,454   1,408,997,290 1,355,800,837
Additions 144,607,028   227,067,886 231,539,820
Retirements (46,666,137) [1],[2]   (160,497,007) [3] (127,800,314) [4]
Business combinations [5]     1,475,682  
Revaluation adjustments (6,302,540) [6]   (55,639,215) [7]  
Transfers (4,198,998)   (3,847,652) (1,000,104)
Incorporation (merger, spin-off, sale) [8]     (19,176,964)  
Effect of translation of foreign subsidiaries (171,266,990) [9]   (81,188,566) (49,542,949)
Ending balance 1,233,363,817   1,317,191,454 1,408,997,290
Cost [member] | Network in operation and equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 1,026,018,942   1,111,714,837 1,057,592,243
Additions 50,024,889   56,307,013 89,696,150
Retirements (33,329,584) [1],[2]   (64,315,475) [3] (45,044,049) [4]
Business combinations [5]     1,415,252  
Revaluation adjustments (6,302,540) [6]   (55,639,215) [7]  
Transfers 70,929,358   63,171,840 53,531,590
Incorporation (merger, spin-off, sale) [8]     (18,399,253)  
Effect of translation of foreign subsidiaries (147,930,373) [9]   (68,236,057) (44,061,097)
Ending balance 959,410,692   1,026,018,942 1,111,714,837
Cost [member] | Land and buildings [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 43,754,276   48,019,609 48,887,578
Additions 460,406   596,165 784,460
Retirements (623,086) [1],[2]   (2,021,550) [3] (473,785) [4]
Transfers 912,321   737,667 38,250
Effect of translation of foreign subsidiaries (4,104,367) [9]   (3,577,615) (1,216,894)
Ending balance 40,399,550   43,754,276 48,019,609
Cost [member] | Other assets [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 145,240,123   152,140,132 157,022,845
Additions 9,207,577   12,325,614 10,782,903
Retirements (4,659,627) [1],[2]   (13,642,510) [3] (11,994,756) [4]
Business combinations [5]     23,723  
Transfers 91,200   559,935 (1,800,756)
Incorporation (merger, spin-off, sale) [8]     (698,522)  
Effect of translation of foreign subsidiaries (9,019,160) [9]   (5,468,249) (1,870,104)
Ending balance 140,860,113   145,240,123 152,140,132
Cost [member] | Construction in process and advances plant suppliers [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance [11] 59,819,638 [12]   63,324,666 67,501,913
Additions 60,315,693 [12]   96,511,498 [11] 83,366,813 [11]
Retirements (3,541,460) [1],[2],[12]   (49,559,746) [3],[11] (47,178,796) [4],[11]
Business combinations [5],[11]     36,707  
Transfers (52,383,308) [12]   (48,393,706) [11] (38,944,421) [11]
Incorporation (merger, spin-off, sale) [8]     (72,194)  
Effect of translation of foreign subsidiaries (3,391,855) [9],[12]   (2,027,587) [11] (1,420,843) [11]
Ending balance 60,818,708 [12]   59,819,638 [11],[12] 63,324,666 [11]
Cost [member] | Spare parts for operation of the network [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 42,358,475   33,798,046 24,796,258
Additions 24,598,463   61,327,596 46,909,494
Retirements (4,512,380) [1],[2]   (30,957,726) [3] (23,108,928) [4]
Transfers (23,748,569)   (19,923,388) (13,824,767)
Incorporation (merger, spin-off, sale) [8]     (6,995)  
Effect of translation of foreign subsidiaries (6,821,235) [9]   (1,879,058) (974,011)
Ending balance 31,874,754   42,358,475 33,798,046
Accumulated depreciation [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 659,965,244   677,800,611 632,871,206
Retirements (36,074,658) [1],[2]   (63,153,092) [3] (35,156,674) [4]
Revaluation adjustments (907,756) [6]   (4,098,583) [7]  
Transfers 169,762   274,011 965,984
Incorporation (merger, spin-off, sale) [8]     (4,325,042)  
Effect of translation of foreign subsidiaries (120,418,805) [9]   (57,900,969) (32,341,634)
Depreciation of the year 101,979,126   111,368,308 111,461,729 [10]
Ending balance 604,712,913   659,965,244 677,800,611
Accumulated depreciation [member] | Network in operation and equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 565,890,076   574,672,058 531,267,306
Retirements (32,420,796) [1],[2]   (52,703,338) [3] (24,322,904) [4]
Revaluation adjustments (907,756) [6]   (4,098,583) [7]  
Transfers 106,646   (71,627) 638,066
Incorporation (merger, spin-off, sale) [8]     4,827,813  
Effect of translation of foreign subsidiaries (109,318,572) [9]   (52,313,781) (29,767,613)
Depreciation of the year 89,594,858   95,577,534 96,857,203 [10]
Ending balance 512,944,456   565,890,076 574,672,058
Accumulated depreciation [member] | Other assets [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 85,574,405   93,259,679 92,444,017
Retirements (3,094,804) [1],[2]   (9,711,246) [3] (10,522,319) [4]
Transfers 139,191   298,060 549,855
Incorporation (merger, spin-off, sale) [8]     (8,940,398)  
Effect of translation of foreign subsidiaries (7,960,435) [9]   (3,146,276) (1,879,241)
Depreciation of the year 10,516,865   13,814,586 12,667,367 [10]
Ending balance 85,175,222   85,574,405 93,259,679
Accumulated depreciation [member] | Spare parts for operation of the network [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 101,155   19,371 72,484
Retirements (55,866) [1],[2]   (115,552) [3] (92,421) [4]
Transfers (12,152)      
Incorporation (merger, spin-off, sale) [8]     6,717  
Effect of translation of foreign subsidiaries (400,001) [9]   (84,295) (26,823)
Depreciation of the year 169,822   274,914 66,131 [10]
Ending balance (197,042)   101,155 19,371
Accumulated depreciation [member] | Buildings [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Beginning balance 8,399,608   9,849,503 9,087,399
Retirements (503,192) [1],[2]   (622,956) [3] (219,030) [4]
Transfers (63,923)   47,578 (221,937)
Incorporation (merger, spin-off, sale) [8]     (219,174)  
Effect of translation of foreign subsidiaries (2,739,797) [9]   (2,356,617) (667,957)
Depreciation of the year 1,697,581   1,701,274 1,871,028 [10]
Ending balance $ 6,790,277   $ 8,399,608 $ 9,849,503
[1] Includes disposals for the sale of 2,980 and 224 telecommunications towers on March 30 and July 31, 2023, respectively, owned by its subsidiary in Peru to Sitios Latam.
[2] It includes disposals related to the sale of 1,388 telecommunications towers on February 3, 2023, owned by its subsidiary in the Dominican Republic to Sitios Latam.
[3] Includes disposals of Chile’s separation process as a result of the ClaroVTR joint venture. See Note 12b. Also includes disposals related to the sale of Claro Panama. See Note 2Ac and disposals related to the partial sale Claro Peru’s towers to Sitios Latam as of December 31, 2022.
[4] Includes disposals related to the sale of TracFone.
[5] “Business Combination” includes the acquisition of Assets of Grupo Oi, Jonava and Ustore, in Brazil. See Note 12a.
[6] Includes the surplus associated with the telecommunications towers that were transferred by the sale to Sitios Latam, described previously, for an amount of Ps. (6,957,275). In addition, includes the surplus associated with the valuation of the telecommunications towers of EuroTeleSites Group, for an amount of Ps. 1,562,491.
[7] ¨Revaluation adjustments” include the surplus associated with the 29,090 telecommunications towers, for an amount of Ps. 50,880,804 that was transferred as part of the spin-off of assets to Sitios Latam described in Note 12d.
[8] “Incorporation (merger, spin-off, sale)” includes disposals associated as spin-off of assets to Sitios Latam described in Note 12d.
[9] Includes a hyperinflation adjustment associated to Argentinean subsidiaries for an amount of Ps. (5,956,256).
[10] Discontinued operations.
[11] Construction in progress includes fixed and mobile network facilities as well as satellite developments and fiber optic which is in the process of being installed.
[12] The construction in progress includes fixed and mobile network installations, as well as satellite and fiber optic developments that are in the process of being installed