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Non-Controlling Interest in Consolidated Subsidiaries - Summary of Analysis of FEMSAs Non-Controlling Interest in its Consolidated Subsidiaries (Detail) $ in Millions, $ in Millions | Dec. 31, 2017 MXN ($) | Dec. 31, 2017 USD ($) | [1] | Dec. 31, 2016 MXN ($)
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Disclosure Of Non Controlling Interest In Consolidated Subsidiaries [Line Items] |  |  |
Non controlling interest | $ 86,621 | $ 4,411 | $ 74,266
Coca-Cola FEMSA [member] |  |  |
Disclosure Of Non Controlling Interest In Consolidated Subsidiaries [Line Items] |  |  |
Non controlling interest | 82,366 |  | 70,293
Other [Member] |  |  |
Disclosure Of Non Controlling Interest In Consolidated Subsidiaries [Line Items] |  |  |
Non controlling interest | $ 4,255 |  | $ 3,973
[1] | Convenience translation to U.S. dollars ($) - See Note 2.2.3

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- Definition The amount of equity in a subsidiary not attributable, directly or indirectly, to a parent. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph 12 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_12_f&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph q -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_q&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 10 -IssueDate 2017-01-01 -Paragraph 22 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=10&date=2017-03-01&anchor=para_22&doctype=Standard -URIDate 2017-03-09 + Details
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