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Intangible Assets - Additional Information (Detail) - MXN ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of detailed information about intangible assets [line items] |  |  |
Risk premium basis points | 1.00% |  |
Cost of Sales |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Amortization of intangible assets | $ 22 | $ 26 | $ 32
Selling and Marketing Expense |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Amortization of intangible assets | 154 | 245 | 236
General and Administrative Expense |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Amortization of intangible assets | $ 844 | $ 791 | $ 730
Technology costs and management systems | Bottom of Range |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Useful lives of intangible assets | 3 years |  |
Technology costs and management systems | Top of Range |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |
Useful lives of intangible assets | 10 years |  |

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- Definition The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2019-01-01 -Paragraph 118 -Subparagraph e -Clause vi -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2019-en-r&anchor=para_118_e_vi&doctype=Standard -URIDate 2019-03-27 + 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 Intangible assets other than goodwill estimated useful life + References No definition available. + Details
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- Definition Risk premium, basis points + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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