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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
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Subclassifications of assets, liabilities and equities [abstract] |  |  |
Balance at beginning of year | $ (39,044,925) | $ (37,351,677) | $ (27,495,158)
Increases recorded in expenses | (19,535,707) | (20,766,362) | (16,987,769)
Adjustment on initial application of IFRS 9 | (2,400,783) |  |
Write-offs | 15,497,254 | 17,713,992 | 12,587,567
Translation effect | 4,686,136 | 1,359,122 | (5,456,317)
Balance at end of year | $ (40,798,025) | $ (39,044,925) | $ (37,351,677)

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- Definition Adjustment on initial application of IFRS 9. + References No definition available. + Details
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Balance Type: | credit
Period Type: | duration

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- Definition Allowance for bad debts. + References No definition available. + Details
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- Definition Increases recorded in expenses. + References No definition available. + Details
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Period Type: | duration

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- Definition Translation effect on bad debts. + References No definition available. + Details
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- Definition Write off bad debts. + References No definition available. + Details
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- References No definition available. + Details
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