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Mergers and Acquisitions - Summary of Fair Value of Net Assets Acquired (Detail) $ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 MXN ($) | Dec. 31, 2020 USD ($) | [2] | Dec. 31, 2020 MXN ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2018 MXN ($)
Disclosure of Detailed Information About Business Combination [Line Items] |  |  |  |  |  |
Total assets | $ 257,839 | [1] | $ 13,225 | $ 263,066 |  | $ 263,787
Total liabilities | (128,154) | [1] | $ (7,069) | (140,609) |  | (132,037)
Goodwill | 107,088 |  |  | $ 100,082 |  |
Aggregated Individually Immaterial Business Combinations |  |  |  |  |  |
Disclosure of Detailed Information About Business Combination [Line Items] |  |  |  |  |  |
Total current assets, including cash acquired |  |  |  |  |  | 1,864
Total other non current assets |  |  |  |  |  | 4,031
Distribution rights |  |  |  |  |  | 1,715
Total assets |  |  |  |  |  | 7,610
Total liabilities |  |  |  |  |  | (3,961)
Net assets acquired |  |  |  |  |  | 3,649
Goodwill |  |  |  |  |  | 2,903
Total consideration transferred |  |  |  |  |  | 6,552
Cash acquired |  |  |  |  | $ (860) | (860)
Net cash paid |  |  |  |  |  | $ 5,692
Aggregated Individually Immaterial Business Combinations | Non-current Assets |  |  |  |  |  |
Disclosure of Detailed Information About Business Combination [Line Items] |  |  |  |  |  |
Business acquisition, fair value adjustments | 236 |  |  |  |  |
Aggregated Individually Immaterial Business Combinations | Distribution Rights |  |  |  |  |  |
Disclosure of Detailed Information About Business Combination [Line Items] |  |  |  |  |  |
Business acquisition, fair value adjustments | 2,887 |  |  |  |  |
Aggregated Individually Immaterial Business Combinations | Goodwill |  |  |  |  |  |
Disclosure of Detailed Information About Business Combination [Line Items] |  |  |  |  |  |
Business acquisition, fair value adjustments | $ 2,903 |  |  |  |  |
[1] | The Company initially adopted IFRS 16 on January 1, 2019 using the modified retrospective approach under which the comparative information is not restated. – See Note 3.18
[2] | Convenience translation to U.S. dollars ($) – See Note 2.2.3

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