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Intangible assets, net and goodwill, Analysis of Intangible Assets (Details) $ in Thousands, $ in Millions | 12 Months Ended
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Dec. 31, 2024 MXN ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 MXN ($) | Dec. 31, 2022 MXN ($)
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | $ 121,498,519 |  | $ 128,893,422 | $ 143,225,764 |
Amount paid for license | 18,321,105 |  | 25,602,692 | 8,846,833 |
Acquisitions in business combinations | 874,167 |  |  | 3,013,529 |
Disposals and other | 2,771,779 |  | 2,492,663 | (496,219) | [1]
Amortization of the year | 19,864,238 |  | 17,119,319 |  |
Incorporation (Merge, Spin off, Sale/other) |  |  | 555 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 18,135,249 |  | (18,371,494) | (7,781,093) |
Balance at end of year | 141,736,581 | $ 6,993 | 121,498,519 | 128,893,422 |
Reconciliation of changes in goodwill [abstract] |  |  |  |  |
Balance at beginning of year | 146,078,897 |  | 141,121,365 |  |
Amortization of the year | 0 |  | 0 | 0 |
Balance at end of year | 156,836,369 | $ 7,738 | 146,078,897 | 141,121,365 |
Cost [Member] |  |  |  |  |
Reconciliation of changes in goodwill [abstract] |  |  |  |  |
Balance at beginning of year | 146,078,897 |  | 141,121,365 | 136,578,194 |
Acquisitions | 0 |  | 0 | 14,447,186 |
Acquisitions in business combinations | 4,735,752 |  |  | 280,192 |
Disposals and other | 0 |  | 0 | (2,230,610) | [1]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 6,021,720 |  | 4,957,532 | (7,803,901) |
Balance at end of year |  |  | 146,078,897 | 141,121,365 |
Accumulated Amortization [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Amortization of the year | (19,864,238) |  | (17,119,319) | (17,915,392) | [2]
Reconciliation of changes in goodwill [abstract] |  |  |  |  |
Amortization of the year | 0 |  | 0 | (149,696) | [2]
Licenses and Rights of Use [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 104,522,386 |  | 113,124,364 | 130,267,745 |
Amount paid for license | 12,645,575 |  | 18,814,933 | 2,656,914 |
Acquisitions in business combinations | 763,101 |  |  | 95,147 |
Disposals and other | 877,379 |  | 1,137,717 | (349,118) | [1]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 16,476,129 |  | (16,910,825) | (6,222,914) |
Balance at end of year | 122,144,291 |  | 104,522,386 | 113,124,364 |
Licenses and Rights of Use [Member] | Cost [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 247,326,829 |  | 255,549,470 | 266,057,690 |
Amount paid for license | 12,645,575 |  | 18,814,933 | 2,656,914 |
Acquisitions in business combinations | 763,101 |  |  | 95,147 |
Disposals and other | (872,238) |  | 1,201,681 | (1,785,196) | [1]
Amortization of the year | 0 |  | 0 | 0 | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 18,349,117 |  | (28,239,255) | (11,475,085) |
Balance at end of year | 278,212,384 |  | 247,326,829 | 255,549,470 |
Licenses and Rights of Use [Member] | Accumulated Amortization [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | (142,804,443) |  | (142,425,106) | (135,789,945) |
Amount paid for license | 0 |  | 0 | 0 |
Acquisitions in business combinations | 0 |  |  | 0 |
Disposals and other | 1,749,617 |  | (63,964) | 1,436,078 | [1]
Amortization of the year | (13,140,279) |  | (11,643,803) | (13,323,410) | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | (1,872,988) |  | 11,328,430 | 5,252,171 |
Balance at end of year | (156,068,093) |  | (142,804,443) | (142,425,106) |
Trademarks [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 2,767,166 |  | 3,014,557 | 3,292,163 |
Amount paid for license | 0 |  | 198,532 | 183,631 |
Acquisitions in business combinations | 0 |  |  | 40,412 |
Disposals and other | (64,374) |  | (10,983) | (66,000) | [1]
Incorporation (Merge, Spin off, Sale/other) |  |  | 555 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 320,575 |  | (296,457) | (324,675) |
Balance at end of year | 2,879,961 |  | 2,767,166 | 3,014,557 |
Trademarks [Member] | Cost [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 25,341,418 |  | 26,467,355 | 27,675,853 |
Amount paid for license | 0 |  | 198,532 | 183,631 |
Acquisitions in business combinations | 0 |  |  | 40,412 |
Disposals and other | (64,374) |  | (11,554) | (66,000) | [1]
Amortization of the year | 0 |  | 0 | 0 | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 555 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 1,209,149 |  | (1,313,470) | (1,366,541) |
Balance at end of year | 26,486,193 |  | 25,341,418 | 26,467,355 |
Trademarks [Member] | Accumulated Amortization [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | (22,574,252) |  | (23,452,798) | (24,383,690) |
Amount paid for license | 0 |  | 0 | 0 |
Acquisitions in business combinations | 0 |  |  | 0 |
Disposals and other | 0 |  | 571 | 0 | [1]
Amortization of the year | (143,406) |  | (139,038) | (110,974) | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | (888,574) |  | 1,017,013 | 1,041,866 |
Balance at end of year | (23,606,232) |  | (22,574,252) | (23,452,798) |
Customer Relationships [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 3,461,014 |  | 4,857,673 | 3,361,164 |
Amount paid for license | 4,475 |  | 5,550 | 22,842 |
Acquisitions in business combinations | 111,066 |  |  | 2,863,765 |
Disposals and other | 0 |  | 0 | (18) | [1]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 101,203 |  | (414,238) | (435,824) |
Balance at end of year | 2,726,052 |  | 3,461,014 | 4,857,673 |
Customer Relationships [Member] | Cost [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 20,689,739 |  | 24,189,692 | 24,570,126 |
Amount paid for license | 4,475 |  | 5,550 | 22,842 |
Acquisitions in business combinations | 111,066 |  |  | 2,863,765 |
Disposals and other | 0 |  | 0 | 0 | [1]
Amortization of the year | 0 |  | 0 | 0 | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 2,599,501 |  | (3,505,503) | (3,267,041) |
Balance at end of year | 23,404,781 |  | 20,689,739 | 24,189,692 |
Customer Relationships [Member] | Accumulated Amortization [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | (17,228,725) |  | (19,332,019) | (21,208,962) |
Amount paid for license | 0 |  | 0 | 0 |
Acquisitions in business combinations | 0 |  |  | 0 |
Disposals and other | 0 |  | 0 | (18) | [1]
Amortization of the year | (951,706) |  | (987,971) | (954,256) | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | (2,498,298) |  | 3,091,265 | 2,831,217 |
Balance at end of year | (20,678,729) |  | (17,228,725) | (19,332,019) |
Software Licenses [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 9,597,885 |  | 6,702,592 | 4,813,462 |
Amount paid for license | 4,805,054 |  | 5,846,212 | 5,108,485 |
Acquisitions in business combinations | 0 |  |  | 14,205 |
Disposals and other | 2,469,893 |  | 1,416,104 | 179,333 | [1]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 1,153,191 |  | (691,276) | (767,493) |
Balance at end of year | 13,120,259 |  | 9,597,885 | 6,702,592 |
Software Licenses [Member] | Cost [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 19,356,045 |  | 16,217,975 | 15,251,136 |
Amount paid for license | 4,805,054 |  | 5,846,212 | 5,108,485 |
Acquisitions in business combinations | 0 |  |  | 14,205 |
Disposals and other | 1,874,257 |  | 313,446 | (797,084) | [1]
Amortization of the year | 0 |  | 0 | 0 | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 3,992,205 |  | (3,021,588) | (3,358,767) |
Balance at end of year | 30,027,561 |  | 19,356,045 | 16,217,975 |
Software Licenses [Member] | Accumulated Amortization [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | (9,758,160) |  | (9,515,383) | (10,437,674) |
Amount paid for license | 0 |  | 0 | 0 |
Acquisitions in business combinations | 0 |  |  | 0 |
Disposals and other | 595,636 |  | 1,102,658 | 976,417 | [1]
Amortization of the year | (4,905,764) |  | (3,675,747) | (2,645,400) | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | (2,839,014) |  | 2,330,312 | 2,591,274 |
Balance at end of year | (16,907,302) |  | (9,758,160) | (9,515,383) |
Content Rights [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 1,150,068 |  | 1,194,236 | 1,491,230 |
Amount paid for license | 866,001 |  | 737,465 | 874,961 |
Acquisitions in business combinations | 0 |  |  | 0 |
Disposals and other | (511,119) |  | (50,175) | (260,416) | [1]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 84,151 |  | (58,698) | (30,187) |
Balance at end of year | 866,018 |  | 1,150,068 | 1,194,236 |
Content Rights [Member] | Cost [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | 11,616,693 |  | 12,783,404 | 13,002,320 |
Amount paid for license | 866,001 |  | 737,465 | 874,961 |
Acquisitions in business combinations | 0 |  |  | 0 |
Disposals and other | (821,107) |  | (50,175) | (263,798) | [1]
Amortization of the year | 0 |  | 0 | 0 | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | 2,630,934 |  | (1,854,001) | (830,079) |
Balance at end of year | 14,292,521 |  | 11,616,693 | 12,783,404 |
Content Rights [Member] | Accumulated Amortization [Member] |  |  |  |  |
Intangible assets other than goodwill [Abstract] |  |  |  |  |
Balance at beginning of year | (10,466,625) |  | (11,589,168) | (11,511,090) |
Amount paid for license | 0 |  | 0 | 0 |
Acquisitions in business combinations | 0 |  |  | 0 |
Disposals and other | 309,988 |  | 0 | 3,382 | [1]
Amortization of the year | (723,083) |  | (672,760) | (881,352) | [2]
Incorporation (Merge, Spin off, Sale/other) |  |  | 0 |  |
Effect of translation of foreign subsidiaries and Hyperinflation adjustment | (2,546,783) |  | 1,795,303 | 799,892 |
Balance at end of year | $ (13,426,503) |  | $ (10,466,625) | $ (11,589,168) |
[1] | Includes the transaction related to Panama and Chile disposal.
[2] | Includes the discontinued operations of Panama and the Claro Chile, SpA joint venture. See Note 2, Ac.

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