XML 41 R89.htm IDEA: XBRL DOCUMENT v3.20.1
Financial Risk Management - Summary of Items Designated as Hedged Items (Detail)
$ in Thousands
12 Months Ended
Dec. 31, 2019
MXN ($)
Disclosure Of Detailed Information About Hedging Instruments [Line Items]  
Cash flow hedge reserve $ (172,094)
Variable-rate instruments [Member]  
Disclosure Of Detailed Information About Hedging Instruments [Line Items]  
Change in value used for calculating hedge ineffectiveness (247,981)
Cash flow hedge reserve $ (247,981)