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Changes in Accounting Policies Required by the Initial Application of IFRS 9, IFRS 15 and IFRS 16 - Contract Costs (Details) - Costs to obtain contract with customers - MXN ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Contract Costs
Beginning balance	$ 3,691,237	$ 3,370,659
Additions	2,498,338	1,770,479
Amortization	(1,648,018)	(1,449,901)
Ending balance	4,541,557	3,691,237
Current Contract Costs	1,598,447	1,379,400
Total Non-current Contract Costs	2,943,110	2,311,837
Cable
Contract Costs
Beginning balance	1,436,758	1,133,727
Additions	1,163,038	753,473
Amortization	(572,105)	(450,442)
Ending balance	2,027,691	1,436,758
Current Contract Costs	640,656	477,167
Total Non-current Contract Costs	1,387,035	959,591
Sky
Contract Costs
Beginning balance	2,254,479	2,236,932
Additions	1,335,300	1,017,006
Amortization	(1,075,913)	(999,459)
Ending balance	2,513,866	2,254,479
Current Contract Costs	957,792	902,233
Total Non-current Contract Costs	$ 1,556,074	$ 1,352,246

X

- Definition

The amount of amortisation for assets recognised from the costs incurred to obtain or fulfil contracts with customers. [Refer: Assets recognised from costs to obtain or fulfil contracts with customers; Amortisation expense]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2020-01-01
-Paragraph 128
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&anchor=para_128_b&doctype=Standard
-URIDate 2020-01-01

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X

- Definition

The amount of assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2020-01-01
-Paragraph 128
-Subparagraph a
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-URIDate 2020-01-01

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- Definition

Amount of increase in assets recognised from costs to obtain or fulfil contracts with customers.

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- Definition

The amount of current assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify.

+ References

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- Definition

The amount of non-current assets recognised from the costs to obtain or fulfil contracts with customers. The costs to obtain a contract with a customer are the incremental costs of obtaining the contract that the entity would not have incurred if the contract had not been obtained. The costs to fulfil a contract with a customer are the costs that relate directly to a contract or to an anticipated contract that the entity can specifically identify.

+ References

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