Transactions with Related Parties - Summary of Total Amounts Paid to Key Management Personnel or Directors (Detail) - MXN ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Key management personnel of entity or parent [Member]
Disclosure of transactions between related parties [Line Items]
Key management personnel compensation	$ 28,587	$ 27,704	$ 28,001
Independent directors [Member]
Disclosure of transactions between related parties [Line Items]
Key management personnel compensation	$ 6,205	$ 5,779	$ 5,168

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2016-01-13
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2016-03-30&anchor=para_17&doctype=Standard
-URIDate 2016-03-31

Name:	ifrs-full_KeyManagementPersonnelCompensation
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration