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Income Taxes - Additional Information (Detail)
R$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2023
MXN ($)
Dec. 31, 2023
BRL (R$)
Dec. 31, 2022
MXN ($)
Dec. 31, 2022
BRL (R$)
Dec. 31, 2021
MXN ($)
Dec. 31, 2021
BRL (R$)
Dec. 31, 2020
MXN ($)
Dec. 31, 2020
BRL (R$)
Nov. 23, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Effective income tax rate for foreign jurisdiction 13.90% 13.90% 17.40% 17.40% 19.30% 19.30%      
Percentage of share with voting right 80.00%                
Accounting profit $ 399,679 R$ 114,539 $ 1,163,081 R$ 297,880 $ 1,431,164 R$ 380,373 $ 1,721,453 R$ 411,436  
Adjustments For Deferred Tax Of Prior Periods     2,647,919 703,761          
Excess On Deferred Income Tax     2,076,594 551,915          
Excess On Current Income Tax     571,325 R$ 151,846          
Deductible temporary differences for which no deferred tax asset is recognised 167,222,681   187,830,823            
Deferred Tax Liability Asset (116,614,520)   (98,415,751)   $ (77,822,839)        
Discontinued operations [member] | Tracfone Wireless Inc Tracfone [member] | Verizon Communications Inc [Member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Percentage of ownership interest in subsidiary sold         100.00%       100.00%
Tax Profit On Sale of Subsidiary         $ 93,968,555        
Brazil [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Net operating loss carryforwards $ 74,392,065                
Effective taxable income percentage carryforward 30.00% 30.00%              
Mexico [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Accumulated tax loss $ 25,515,213                
Argentina [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Effective taxable income percentage carryforward 100.00% 100.00%              
Accumulated tax loss $ 10,750,889                
Accumulated Tax Loss Expiration Term 5 years 5 years              
Bottom of range [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Statutory tax rates 10.00% 10.00%              
Top of range [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Statutory tax rates 35.00% 35.00%              
CUCA [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Contributed capital account $ 680,304,268   654,631,901            
CUFIN [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Contributed capital account 568,085,361   533,076,863            
Retained earnings [member]                  
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]                  
Deferred Tax Liability Asset $ 308,551   $ 902,508