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Other Income and Expenses - Summary of Other Income and Expenses (Detail) $ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2017 MXN ($) | Dec. 31, 2017 USD ($) | [1] | Dec. 31, 2016 MXN ($) | Dec. 31, 2015 MXN ($)
Disclosure of Other Operating Income Expense [Line Items] |  |  |  |
Gain on sale of shares | $ 123 |  |  | $ 14
Gain on sale of long-lived assets | 209 |  | $ 170 | 249
Sale of waste material | 3 |  | 50 | 41
Write off-contingencies(see Note 25.5) |  |  | 329 |
Recoveries from previous years | (35) |  | 466 | 16
Insurance rebates | 6 |  | 10 | 17
Foreign exchange gain | (4) |  |  |
Consolidation of Philippines | 2,830 |  |  |
Others | 1,620 |  | 132 | 86
Other income | 34,741 | $ 1,769 | 1,157 | 423
Contingencies associated with prior acquisitions or disposals | 39 |  | 1,582 | 93
Loss on sale of equity financial assets |  |  | 8 |
Loss on sale of other assets | 148 |  | 159 |
Impairment of long-lived assets | 2,063 |  |  | 134
Disposal of long-lived assets | 451 |  | 238 | 416
Suppliers provisions | 398 |  |  |
Foreign exchange losses related to operating activities | 2,524 |  | 2,370 | 917
Non-income taxes from Colombia | 636 |  | 53 | 30
Severance payments | 363 |  | 98 | 285
Donations | 242 |  | 203 | 362
Legal fees and other expenses from past acquisitions | 612 |  | 241 | 223
Venezuela deconsolidation effect | 26,123 |  |  |
Other | 359 |  | 957 | 281
Other expenses | 33,958 |  | $ 5,909 | $ 2,741
Heineken group shares [member] |  |  |  |
Disclosure of Other Operating Income Expense [Line Items] |  |  |  |
Gain on sale of shares | $ 29,989 |  |  |
[1] | Convenience translation to U.S. dollars ($) - See Note 2.2.3

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