Other Acquired Rights - Additional Information (Detail) - MXN ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Disclosure Of Other Acquired Rights [Line Items]
Amortization recognized	$ 1,119,102	$ 1,047,507	$ 949,711
Other acquired rights [Member]
Disclosure Of Other Acquired Rights [Line Items]
Amortization recognized	$ 16,697	$ 16,697	$ 16,697

The amount of amortisation expense. Amortisation is the systematic allocation of depreciable amounts of intangible assets over their useful lives.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2016-01-13
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2016-03-30&anchor=para_112_c&doctype=Standard
-URIDate 2016-03-31

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