Income Taxes - Reconciliation of Principal differences between income taxes computed at the statutory rate and the Group's provision for income taxes (Details)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes
Statutory income tax rate	30.00%	30.00%	30.00%
Differences between accounting and tax bases, includes tax inflation gain that is not recognized for accounting purposes	25.00%	5.00%	5.00%
Asset tax		(2.00%)
Tax loss carryforwards	7.00%	(13.00%)	(4.00%)
2014 Tax Reform		1.00%	2.00%
Foreign operations	(2.00%)	8.00%	3.00%
Disposition of investment		3.00%	2.00%
Disposition of Radipolis	3.00%
Share of income in associates and joint ventures, net	2.00%	(2.00%)	(1.00%)
Impairment loss in investment in shares of UHI	30.00%
Effective income tax rate	95.00%	30.00%	37.00%

The applicable income tax rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2020-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2020-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2020-01-01

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The tax expense (income) divided by the accounting profit. [Refer: Accounting profit]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
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- References

No definition available.

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
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- Definition

The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the application of foreign tax rates. [Refer: Average effective tax rate; Applicable tax rate]

+ References

+ Details

Name:	ifrs-full_TaxRateEffectOfForeignTaxRates
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from tax losses. [Refer: Average effective tax rate; Applicable tax rate]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the 2014 tax reform.

+ References

No definition available.

+ Details

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Namespace Prefix:	tv_
Data Type:	num:percentItemType
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- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the asset tax.

+ References

No definition available.

+ Details

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Namespace Prefix:	tv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the differences in inflation adjustments for tax and book purposes.

+ References

No definition available.

+ Details

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Namespace Prefix:	tv_
Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the disposition of investment.

+ References

No definition available.

+ Details

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Namespace Prefix:	tv_
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Balance Type:	na
Period Type:	duration

- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the impairment loss in investment.

+ References

No definition available.

+ Details

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Namespace Prefix:	tv_
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Balance Type:	na
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- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the effect of radiopolis.

+ References

No definition available.

+ Details

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Namespace Prefix:	tv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the share of income in joint ventures and associates, net.

+ References

No definition available.

+ Details

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