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Intangible Assets, Net and Goodwill - Summary of Analysis of Intangible Assets (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Licenses and rights of use [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year $ 130,267,745 $ 118,481,097 $ 111,432,979
Acquisitions 2,656,914 24,406,905 15,079,714
Acquisitions in business combinations 95,147   4,436,313
Disposals and other (349,118) [1] 2,041,443 [2] 1,337,178
Amortization of the year (13,323,410) [3] (14,387,511) (14,002,802) [4]
Effect of translation of foreign subsidiaries (6,222,914) (274,189) 197,715
Balance at end of year 113,124,364 130,267,745 118,481,097
Licenses and rights of use [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 266,057,690 253,090,161 246,100,862
Acquisitions 2,656,914 24,406,905 15,079,714
Acquisitions in business combinations 95,147   4,436,313
Disposals and other (1,785,196) [1] (4,427,685) [2] 1,502,981
Effect of translation of foreign subsidiaries (11,475,085) (7,011,691) (14,029,709)
Balance at end of year 255,549,470 266,057,690 253,090,161
Licenses and rights of use [member] | Accumulated depreciation [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year (135,789,945) (134,609,064) (134,667,883)
Disposals and other 1,436,078 [1] 6,469,128 [2] (165,803)
Amortization of the year (13,323,410) [3] (14,387,511) (14,002,802) [4]
Effect of translation of foreign subsidiaries 5,252,171 6,737,502 14,227,424
Balance at end of year (142,425,106) (135,789,945) (134,609,064)
Trademarks [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 3,292,163 3,777,418 3,488,709
Acquisitions 183,631 75,100 162,309
Acquisitions in business combinations 40,412   12,110
Disposals and other (66,000) [1] (326,949) [2] (132,028)
Amortization of the year (110,974) [3] (140,205) (168,975) [4]
Effect of translation of foreign subsidiaries (324,675) (93,201) 415,293
Balance at end of year 3,014,557 3,292,163 3,777,418
Trademarks [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 27,675,853 29,132,365 27,419,008
Acquisitions 183,631 75,100 162,309
Acquisitions in business combinations 40,412   12,110
Disposals and other (66,000) [1] (1,129,666) [2] 4,000
Effect of translation of foreign subsidiaries (1,366,541) (401,946) 1,534,938
Balance at end of year 26,467,355 27,675,853 29,132,365
Trademarks [member] | Accumulated depreciation [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year (24,383,690) (25,354,947) (23,930,299)
Disposals and other   802,717 [2] (136,028)
Amortization of the year (110,974) [3] (140,205) (168,975) [4]
Effect of translation of foreign subsidiaries 1,041,866 308,745 (1,119,645)
Balance at end of year (23,452,798) (24,383,690) (25,354,947)
Customer relationships [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 3,361,164 4,153,661 3,099,381
Acquisitions 22,842 229,936 1,935
Acquisitions in business combinations 2,863,765   2,689,718
Disposals and other (18) [1] (302,666) [2] (850,852)
Amortization of the year (954,256) [3] (707,500) (808,293) [4]
Effect of translation of foreign subsidiaries (435,824) (12,267) 21,772
Balance at end of year 4,857,673 3,361,164 4,153,661
Customer relationships [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 24,570,126 29,579,266 22,875,011
Acquisitions 22,842 229,936 1,935
Acquisitions in business combinations 2,863,765   2,689,718
Disposals and other   (4,133,408) [2] (5,763)
Effect of translation of foreign subsidiaries (3,267,041) (1,105,668) 4,018,365
Balance at end of year 24,189,692 24,570,126 29,579,266
Customer relationships [member] | Accumulated depreciation [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year (21,208,962) (25,425,605) (19,775,630)
Disposals and other (18) [1] 3,830,742 [2] (845,089)
Amortization of the year (954,256) [3] (707,500) (808,293) [4]
Effect of translation of foreign subsidiaries 2,831,217 1,093,401 (3,996,593)
Balance at end of year (19,332,019) (21,208,962) (25,425,605)
Software licenses [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 4,813,462 5,067,698 5,103,367
Acquisitions 5,108,485 2,659,704 2,445,784
Acquisitions in business combinations 14,205   36
Disposals and other 179,333 [1] (2,315) [2] (471,812)
Amortization of the year (2,645,400) [3] (2,738,978) (2,667,870) [4]
Effect of translation of foreign subsidiaries (767,493) (172,647) 658,193
Balance at end of year 6,702,592 4,813,462 5,067,698
Software licenses [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 15,251,136 17,301,146 13,104,110
Acquisitions 5,108,485 2,660,330 2,445,784
Acquisitions in business combinations 14,205   36
Disposals and other (797,084) [1] (3,484,755) [2] (2,485,429)
Effect of translation of foreign subsidiaries (3,358,767) (1,225,585) 4,236,645
Balance at end of year 16,217,975 15,251,136 17,301,146
Software licenses [member] | Accumulated depreciation [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year (10,437,674) (12,233,448) (8,000,743)
Acquisitions   (626)  
Disposals and other 976,417 [1] 3,482,440 [2] 2,013,617
Amortization of the year (2,645,400) [3] (2,738,978) (2,667,870) [4]
Effect of translation of foreign subsidiaries 2,591,274 1,052,938 (3,578,452)
Balance at end of year (9,515,383) (10,437,674) (12,233,448)
Content rights [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 1,491,230 1,977,093 2,044,953
Acquisitions 874,961 818,436 1,570,415
Disposals and other (260,416) [1] (429,415) [2] (313,942)
Amortization of the year (881,352) [3] (899,666) (1,440,749) [4]
Effect of translation of foreign subsidiaries (30,187) 24,782 116,416
Balance at end of year 1,194,236 1,491,230 1,977,093
Content rights [member] | Cost [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 13,002,320 12,036,312 10,160,182
Acquisitions 874,961 818,436 1,570,415
Disposals and other (263,798) [1] (281,747) [2] (313,942)
Effect of translation of foreign subsidiaries (830,079) 429,319 619,657
Balance at end of year 12,783,404 13,002,320 12,036,312
Content rights [member] | Accumulated depreciation [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year (11,511,090) (10,059,219) (8,115,229)
Disposals and other 3,382 [1] (147,668) [2]  
Amortization of the year (881,352) [3] (899,666) (1,440,749) [4]
Effect of translation of foreign subsidiaries 799,892 (404,537) (503,241)
Balance at end of year (11,589,168) (11,511,090) (10,059,219)
Intangibles, net [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 143,225,764 133,456,967 125,169,389
Acquisitions 8,846,833 28,190,081 19,260,157
Acquisitions in business combinations 3,013,529   7,138,177
Disposals and other (496,219) [1] 980,098 [2] (431,456)
Amortization of the year (17,915,392) [3] (18,873,860) (19,088,689) [4]
Effect of translation of foreign subsidiaries (7,781,093) (527,522) 1,409,389
Balance at end of year 128,893,422 143,225,764 133,456,967
Goodwill [member]      
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]      
Balance at beginning of year 136,578,194 143,052,859 152,899,801
Acquisitions 14,447,186    
Acquisitions in business combinations 280,192   (7,014,120) [5]
Disposals and other (2,230,610) [1] (3,516,287) [2] (537,343)
Amortization of the year [3],[6] (149,696)    
Effect of translation of foreign subsidiaries (7,803,901) (2,958,378) (2,295,479)
Balance at end of year $ 141,121,365 $ 136,578,194 $ 143,052,859
[1] Includes the transaction related to Panama and Chile disposal.
[2] Includes disposals related to the sale of TracFone.
[3] Includes the discontinued operations of Panama and the Claro Chile, SpA joint venture. See Note 2, Ac.
[4] Restated for discontinued operations of TracFone, Panama and the Claro Chile, SpA joint venture. See Note 2Ac.
[5] Corresponds to adjustments in Purchase Price allocation values, mainly for the spectrum licenses, in subsidiaries acquired during 2019.
[6] Impairment