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Mergers, Acquisitions and Disposals - Summary of Purchase Price to Fair Value of Net Assets Acquired and Reconciliation of Cash Flows (Detail) R$ in Millions, $ in Millions | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2017 MXN ($) | Dec. 31, 2018 MXN ($) | May 04, 2017 USD ($) | Mar. 28, 2017 MXN ($) | Dec. 31, 2016 MXN ($) | Dec. 06, 2016 MXN ($) | Dec. 06, 2016 BRL (R$)
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Goodwill |  | $ 0 |  |  |  |  |
CCFPI [member] |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Total current assets | $ 9,645,000,000 |  |  |  |  |  |
Total non-current assets | 18,909,000,000 |  |  |  |  |  |
Total assets | 32,698,000,000 |  |  |  |  |  |
Total liabilities | (10,101,000,000) |  |  |  |  |  |
Net assets acquired | 22,597,000,000 |  |  |  |  |  |
Non-controlling interest | (11,073,000,000) |  |  |  |  |  |
Equity interest held previously | 22,110,000,000 |  |  |  |  |  |
Intangible assets recognised as of acquisition date | 11,524,000,000 |  |  |  |  |  |
Carrying value of CCFPI investment derecognized | 11,690,000,000 |  |  |  |  |  |
Loss as a result of remeasuring to fair value the equity interest | (166,000,000) |  |  |  |  |  |
Gain on derecognition of other comprehensive income | 2,996,000,000 |  |  |  |  |  |
Total profit from remeasurement of previously equity interest | 2,830,000,000 |  |  |  |  |  |
CCFPI [member] | Distribution rights [member] |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Intangible assets recognised as of acquisition date | 4,144,000,000 |  |  |  |  |  |
Vonpar [member] |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Total current assets | 4,390,000,000 |  |  |  |  |  |
Total non-current assets | 11,344,000,000 |  |  |  |  |  |
Total assets | 30,527,000,000 |  |  |  |  |  |
Total liabilities | (11,708,000,000) |  |  |  |  |  |
Net assets acquired | 18,819,000,000 |  | $ 4,082 |  |  |  |
Goodwill | 2,173,000,000 |  |  |  |  |  |
Net cash paid | 13,198,000,000 |  |  |  |  | $ 10,370,000,000 | R$ 1,730
Total consideration transferred | 20,992,000,000 |  |  |  |  | $ 20,992,000,000 | R$ 3,508
Amount to be paid through Promissory Notes | (6,992,000,000) |  |  |  |  |  |
Cash acquired | 1,287,000,000 |  |  | $ 1,287,000,000 |  |  |
Amount recognized as embedded financial instrument | 485,000,000 |  |  |  |  |  |
Vonpar [member] | Distribution rights [member] |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Intangible assets recognised as of acquisition date | $ 14,793,000,000 |  |  |  |  |  |
Other acquisitions [member] |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Total current assets |  |  |  |  | $ 1,125,000,000 |  |
Total non-current assets |  |  |  |  | 3,316,000,000 |  |
Total assets |  |  |  |  | 4,441,000,000 |  |
Total liabilities |  |  |  |  | (2,062,000,000) |  |
Net assets acquired |  |  |  |  | 2,379,000,000 |  |
Goodwill |  |  |  |  | 3,204,000,000 |  |
Non-controlling interest |  |  |  |  | 35,000,000 |  |
Equity interest held previously |  |  |  |  | 369,000,000 |  |
Net cash paid |  |  |  |  | 5,618,000,000 |  |
Total consideration transferred |  |  |  |  | 5,612,000,000 |  |
Cash acquired |  |  |  |  | $ 211,000,000 |  |
Other acquisitions [member] | Coca-Cola FEMSA [member] |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Total current assets |  | 1,846,000,000 |  |  |  |  |
Total non-current assets |  | 3,795,000,000 |  |  |  |  |
Total assets |  | 10,243,000,000 |  |  |  |  |
Total liabilities |  | (3,691,000,000) |  |  |  |  |
Net assets acquired |  | 6,552,000,000 |  |  |  |  |
Net cash paid |  | 5,692,000,000 |  |  |  |  |
Total consideration transferred |  | 6,552,000,000 |  |  |  |  |
Cash acquired |  | (860,000,000) |  |  |  |  |
Other acquisitions [member] | Distribution rights [member] | Coca-Cola FEMSA [member] |  |  |  |  |  |  |
Disclosure of detailed information about business combination [line items] |  |  |  |  |  |  |
Intangible assets recognised as of acquisition date |  | $ 4,602,000,000 |  |  |  |  |

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