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v3.19.1

Bonus Programs - Summary of Number of Shares Held by the Trust (Detail) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
FEMSA UBD [member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Beginning balance | 2,945,209 | 3,625,171
Shares acquired by the administrative trust to employees | 913,846 | 1,311,599
Shares released from administrative trust to employees upon vesting | (1,580,595) | (1,991,561)
Forfeitures | 0 | 0
Ending balance | 2,278,460 | 2,945,209
KOFL [member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Beginning balance | 935,899 | 1,068,327
Shares acquired by the administrative trust to employees | 262,909 | 344,770
Shares released from administrative trust to employees upon vesting | (501,582) | (477,198)
Forfeitures | 0 | 0
Ending balance | 697,226 | 935,899

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- Definition The number of share options outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_d&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 45 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_i&doctype=Standard -URIDate 2018-03-16 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2018-01-01 -Paragraph 45 -Subparagraph b -Clause vi -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_vi&doctype=Standard -URIDate 2018-03-16 + Details
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