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Equity Accounted Investees - Summary of Equity Accounted Investees (Parenthetical) (Detail) € in Millions, R$ in Millions, $ in Millions, $ in Millions |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 01, 2018 EUR (€) | Apr. 30, 2010 | Dec. 31, 2019 MXN ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 MXN ($) | Dec. 31, 2017 MXN ($) | [3] | Nov. 01, 2019 BRL (R$)
Disclosure of Investments in Associates and Joint Ventures [line items] |  |  |  |  |  |  |  |  |
Proportion of ownership interest in associate |  |  | 14.80% |  | 14.80% |  | 14.80% |  |
Increase (decrease) in profit |  |  | $ 28,048 | [1] | $ 1,488 | [2] | $ 33,079 | $ 37,207 |
Increase (decrease) due to changes in accounting policy required by IFRSs [member] |  |  |  |  |  |  |  |  |
Disclosure of Investments in Associates and Joint Ventures [line items] |  |  |  |  |  |  |  |  |
Increase (decrease) in profit | € | € 10 |  |  |  |  |  |  |  |
Increase (decrease) in equity | € | € 157 |  |  |  |  |  |  |  |
Heineken Company [member] |  |  |  |  |  |  |  |  |
Disclosure of Investments in Associates and Joint Ventures [line items] |  |  |  |  |  |  |  |  |
Proportion of ownership interest in associate |  |  | 8.63% |  | 8.63% |  | 8.63% |  |
Heineken Holding N.V. [member] |  |  |  |  |  |  |  |  |
Disclosure of Investments in Associates and Joint Ventures [line items] |  |  |  |  |  |  |  |  |
Proportion of ownership interest in associate |  |  | 12.26% |  | 12.26% |  | 12.26% |  |
Heineken [member] |  |  |  |  |  |  |  |  |
Disclosure of Investments in Associates and Joint Ventures [line items] |  |  |  |  |  |  |  |  |
Proportion of ownership interest in associate |  | 20.00% | 14.76% |  | 14.76% |  | 14.76% |  |
Raizen Convenincias [Member] | FEMSA Comercio [member] |  |  |  |  |  |  |  |  |
Disclosure of Investments in Associates and Joint Ventures [line items] |  |  |  |  |  |  |  |  |
Percentage of stake acquired |  |  |  |  |  |  |  |  | 50.00%
Notes payable on acquisition | R$ |  |  |  |  |  |  |  |  | R$ 367
Cash paid, Acquisition | R$ |  |  |  |  |  |  |  |  | R$ 357
[1] | The Company initially adopted IFRS 16 at January 1st, 2019 using the modified retrospectively approach under which the comparative information is not restated. – See Note 2.4.1
[2] | Convenience translation to U.S. dollars ($) – See Note 2.2.3
[3] | Revised to reflect the discontinued operations of Coca-Cola FEMSA Philippines – See Note 4.2.1

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