The proportion of ownership interests in a subsidiary held by non-controlling interests. [Refer: Subsidiaries [member]; Non-controlling interests]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2018-01-01
-Paragraph 12
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2018-03-01&anchor=para_12_c&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_ProportionOfOwnershipInterestsHeldByNoncontrollingInterests
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Balances and Transactions with Related Parties and Affiliated Companies - Summary of Transaction with Related Parties (Parenthetical) (Detail) - MXN ($) $ in Millions		1 Months Ended
	May 22, 2018	May 22, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cafe Del Pacifico SAPI De CV Caffenio [member]
Disclosure of transactions between related parties [line items]
Non-controlling interest rate	10.00%	10.00%
The Coca-Cola company [member]
Disclosure of transactions between related parties [line items]
Contributions			$ 3,542	$ 4,023	$ 4,518