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Accounts Receivable from Subscribers, Distributors, Recoverable Taxes Contractual Assets and Other, Net - Schedule of Changes in Allowance for Expected Credit Losses (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract]      
Balance at beginning of year [1] $ (41,835,826) $ (44,551,735) $ (39,480,909)
Increases recorded in expenses [2] (12,197,447) (10,212,490) [1] (18,450,821) [1]
Write-offs 9,162,382 11,682,343 [1] 11,953,227 [1]
Business combination [1]   0 (2,066)
Translation effect 2,791,835 1,246,056 [1] 1,428,834 [1]
Balance at year end $ (42,079,056) $ (41,835,826) [1] $ (44,551,735) [1]
[1] Restated by discontinued operations
[2] Includes discontinued operation of TracFone, Panama and Chile in joint venture. See note 2Ac.