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Income Taxes - Gross rollforward of deferred income tax assets, net (Details) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Gross rollforward of deferred income tax assets, net |  |
Deferred income tax account at beginning of period | $ 17,132,915 | $ 13,791,257
Statement of income credit | 1,574,610 | 2,598,712
Other comprehensive income ("OCI") credit | 7,528,693 | 1,154,097
Retained earnings charge |  | (342,420)
Disposed Operations | (22,836) | (68,731)
Deferred income tax account at end of period | $ 26,213,382 | $ 17,132,915

X
- Definition The amount of tax expense or income relating to changes in deferred tax liabilities and deferred tax assets, recognised in profit or loss. [Refer: Deferred tax assets; Deferred tax expense (income); Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph g -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_g_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DeferredTaxExpenseIncomeRecognisedInProfitOrLoss
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2020-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_DeferredTaxLiabilityAsset
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_ReconciliationOfChangesInDeferredTaxLiabilityAssetAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount related to disposed operation. + References No definition available. + Details
Name: | tv_DisposedOperation
Namespace Prefix: | tv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of deferred income tax relating to amounts recognised in other comprehensive income and credit chages. + References No definition available. + Details
Name: | tv_IncomeTaxRelatingToOtherComprehensiveIncomeCredit
Namespace Prefix: | tv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of deferred income tax relating to amounts recognised in Retained earnings charge. + References No definition available. + Details
Name: | tv_IncomeTaxRelatingToRetainedEarningsCharge
Namespace Prefix: | tv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration