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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

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- 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 + Details
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- 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 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2020-en-r&anchor=para_128_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition Amount of increase in assets recognised from costs to obtain or fulfil contracts with customers. + References No definition available. + Details
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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 No definition available. + Details
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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 No definition available. + Details
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