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Business Combinations, Acquisitions and Non-controlling Interest- Additional Information (Detail) $ in Thousands, € in Millions, $ in Millions, $ in Billions |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
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Dec. 31, 2023 CLP ($) | Dec. 26, 2023 MXN ($) | Nov. 29, 2023 | Oct. 04, 2023 MXN ($) | Sep. 22, 2023 | Jul. 24, 2023 | Oct. 06, 2022 MXN ($) | Sep. 15, 2021 MXN ($) | Sep. 30, 2023 MXN ($) | Dec. 31, 2023 MXN ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 MXN ($) | Dec. 31, 2021 MXN ($) | Dec. 26, 2023 CLP ($) | Aug. 01, 2023 MXN ($) | Aug. 01, 2023 EUR (€) | Apr. 20, 2022
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net of cash paid |  |  |  |  |  |  |  |  |  | $ 14,232,166 |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  |  |  |  |  | 80.00% |  |  |  |  |  |  |
Floor Lease Expiration |  |  |  |  |  |  |  |  |  | 10 years | 10 years |  |  |  |  |  |
Cash Transferred With held For Price Adjustment |  |  |  |  |  |  |  |  |  | $ 1,315,180 |  |  |  |  |  |  |
Reclassification adjustments on exchange differences on translation of foreign operations, net of tax |  |  |  |  |  |  | $ 6,943,753 | $ 1,750,451 |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 80,789,642 | $ 4,782 | $ 81,506,395 | $ 196,326,114 |  |  |  |
Non-controlling interest |  |  |  |  |  |  |  |  |  | 4,679,025 | 277 | 5,347,004 | 3,902,947 |  |  |  |
Payment from changes in owneship interests in subsidiaries |  |  |  |  |  |  |  |  |  | 6,263,945 | $ 371 | 39,596 | $ 7,720 |  |  |  |
Claro Chile S A [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain Loss Recognized In Joint Venture Transaction |  |  |  |  |  |  | 1,138,859 |  |  |  |  |  |  |  |  |  |
Reclassification adjustments on exchange differences on translation of foreign operations, net of tax |  |  |  |  |  |  | $ 8,252,250 |  |  |  |  |  |  |  |  |  |
Share of profit (loss) of associates and joint ventures accounted for using equity method |  |  |  |  |  |  |  |  |  | 5,374,969 |  | 1,924,040 |  |  |  |  |
Impairment loss recognized in profit or loss |  |  |  |  |  |  |  |  |  | $ 12,184,562 |  |  |  |  |  |  |
Claro Chile S A [member] | Agreement to Commence Joint Venture [Member] | Amrica Movil [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in joint venture |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |  |  |
Claro Chile S A [member] | Agreement to Commence Joint Venture [Member] | Amrica Movil [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in joint venture |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |  |  |
Claro Chile S A [member] | Agreement to Commence Joint Venture [Member] | Liberty Latin America [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in joint venture |  |  |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |  |  |
Claro Vtr [Member] | Liberty Latin America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment Of Investments In Joint Ventures |  |  |  |  |  |  |  |  | $ 4,677,782 |  |  |  |  |  |  |  |
Claro Vtr [Member] | Liberty Latin America [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount | $ 742.1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Claro Vtr [Member] | Liberty Latin America [Member] | Transaction Agreement For Additional Capital Requirement Of The Joint Venture [Member] | Calendar Year Two Thousand And Twenty Three Through June Two Thousand And Twenty Four [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital commitement |  | $ 18,728,611 |  |  |  |  |  |  |  |  |  |  |  | $ 972.4 |  |  |
Claro Vtr [Member] | Liberty Latin America [Member] | Transaction Agreement For Additional Capital Requirement Of The Joint Venture [Member] | Calendar Year Two Thousand And Twenty Three Through June Two Thousand And Twenty Four [Member] | To Permit The Refinancing Of Certain Debt Guaranteed By The Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital commitement |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 289.3 |  |  |
Claro Vtr [Member] | Agreement to Commence Joint Venture [Member] | Amrica Movil [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in joint venture |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Claro Vtr [Member] | Agreement to Commence Joint Venture [Member] | Liberty Latin America [Member] | Convertible Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of ownership interest in joint venture |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sitios Latinoamrica SAB de CV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  |  |  |  |  |  |  |  |  | $ 2,582,887 |  |  |  |  |  |  |
Liabilities incurred |  |  |  |  |  |  |  |  |  | 100,026,548 |  |  |  |  |  |  |
Assets incurred |  |  |  |  |  |  |  |  |  | $ 102,609,435 |  |  |  |  |  |  |
Other Entities [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net of cash paid |  |  |  |  |  |  |  |  |  |  |  | 670,051 |  |  |  |  |
Additional non-controlling interest acquired |  |  |  |  |  |  |  |  |  |  |  | $ 39,596 |  |  |  |  |
Jonava [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Telekom Austria AG [member] | COUNTRY A T [Member] | Euro Telesites AG [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value | € |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | € 1,953 |
Top of range [member] | Sitios Latinoamrica SAB de CV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease Term Of Contract |  |  |  |  |  |  |  |  |  | 10 years | 10 years |  |  |  |  |  |
Floor Lease Expiration |  |  |  |  |  |  |  |  |  | 5 years | 5 years |  |  |  |  |  |
Bottom of range [member] | Sitios Latinoamrica SAB de CV [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Floor Lease Expiration |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |
Telekom Austria [member] | COUNTRY A T [Member] | Euro Telesites AG [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share exchange ratio based on which the shares will be issued by the new company |  |  |  |  | 0.25 |  |  |  |  |  |  |  |  |  |  |  |
Telekom Austria [member] | Telekom Austria AG [member] | COUNTRY A T [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets incurred | € |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 591 |
Claro [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment For Transition Services |  |  |  |  |  |  |  |  |  | $ 781,217 |  |  |  |  |  |  |
Claro [Member] | Twenty Twenty Business Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32.00%
Twenty Twenty Three Business Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Cash Transferred With held For Price Adjustment |  |  |  | $ 1,315,180 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest and monetary correction value |  |  |  | 155,681 |  |  |  |  |  |  |  |  |  |  |  |  |
Payment of disputed purchase price |  |  |  | $ 658,048 |  |  |  |  |  |  |  |  |  |  |  |  |
EuroTeleSites [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  |  | 126,103 |  |  |  |  |  |  |
Non-controlling interest |  |  |  |  |  |  |  |  |  | 52,485 |  |  |  |  |  |  |
Net assets |  |  |  |  |  |  |  |  |  | 4,365,235 |  |  |  |  |  |  |
Telekom Austria AG [member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment from changes in owneship interests in subsidiaries |  |  |  |  |  |  |  |  |  | $ 49,302 |  |  |  |  |  |  |
Telekom Austria AG [member] | COUNTRY A T [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of fixed and mobile line operator |  |  | 58.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proportion of voting rights held in subsidiary |  |  | 1.85% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting rights in subsidiary acquired during the period |  |  |  |  |  | 5.55% |  |  |  |  |  |  |  |  |  |  |
Telekom Austria AG [member] | COUNTRY A T [Member] | Euro Telesites AG [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consideration transferred, acquisition-date fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,076,000 |  |
Liabilities incurred |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 47,675,000 | € 2,543 |
Assets incurred |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 36,599,000 |  |

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