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Commitments and Contingencies - Additional Information (Detail)
R$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
MXN ($)
Dec. 31, 2022
MXN ($)
Dec. 31, 2022
BRL (R$)
Dec. 31, 2018
MXN ($)
Dec. 31, 2023
BRL (R$)
Disclosure of commitments and contingencies [line items]          
Fine imposed on sanction procedure initiated by triggered breach       $ 2,543,937  
Monetary correction in a total amount of regulatory matters   $ 14,579,000 R$ 4,178,000    
Value Added Tax [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount $ 39,637,229       R$ 11,359,145
Provision for taxes [member] | Value Added Tax [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 5,314,821       1,523,109
Provision for taxes [member] | Social Contribution [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 3,502,153       1,003,639
Provision for taxes [member] | Social Integration Program [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 5,749,593       1,647,705
Provision for taxes [member] | Allegedly Improper Exclusion [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 1,443,933       413,799
Provision for taxes [member] | Tax Credit Related to Income Tax and Social Contribution Over Profits [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 135,398       38,802
Provision for taxes [member] | Contribute To The Promotion Of Public Radio Broadcasting [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 4,106,726       1,176,896
Provision for taxes [member] | Telecommunications Technology Development Fund [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 450       129
Provision for taxes [member] | Services Tax [Member]          
Disclosure of commitments and contingencies [line items]          
Provision 45,304       12,983
Provision for taxes [member] | IRRF And Cide Taxes And Remittances To Foreign Operators [Member]          
Disclosure of commitments and contingencies [line items]          
Provision $ 134,229       38,467
Agencia Nacional de telecomunicacoes [member]          
Disclosure of commitments and contingencies [line items]          
Inflation-related adjustments applicable to percentage of concessions price 60.00%        
Related matters [member] | Provision for taxes [member]          
Disclosure of commitments and contingencies [line items]          
Provision $ 20,725,637       5,939,505
Tax contingent liability [member] | Social Contribution [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 5,962,223       1,708,640
Tax contingent liability [member] | Social Integration Program [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 17,376,221       4,979,637
Tax contingent liability [member] | Allegedly Improper Exclusion [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 13,754,400       3,941,704
Tax contingent liability [member] | Tax Credit Related to Income Tax and Social Contribution Over Profits [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 5,965,336       1,709,532
Tax contingent liability [member] | Contribute To The Promotion Of Public Radio Broadcasting [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 4,431,497       1,269,968
Tax contingent liability [member] | Telecommunications Technology Development Fund [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 6,230,607       1,785,553
Tax contingent liability [member] | Services Tax [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 2,139,175       613,040
Tax contingent liability [member] | IRRF And Cide Taxes And Remittances To Foreign Operators [Member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 4,757,143       1,363,291
Tax contingent liability [member] | Related matters [member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 123,637,128       35,431,641
Contingent liabilities [member] | TFI [member]          
Disclosure of commitments and contingencies [line items]          
Tax contingencies amount 21,754,988       6,234,494
Provision for Monetary correction in a total amount of regulatory matters [member]          
Disclosure of commitments and contingencies [line items]          
Provision $ 5,203,092       R$ 1,491,090