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Subsequent Events - Additional Information (Detail) - Events After Reporting Period [Member] - MXN ($)
$ in Millions
Feb. 02, 2021
Jan. 19, 2021
Scotiabank Inverlat, S.A. (Scotiabank) [Member]    
Disclosure Of Nonadjusting Events After Reporting Period [Line Items]    
Payment of loan   $ 95.5
BBVA Bancomer, S.A. (BBVA) [Member]    
Disclosure Of Nonadjusting Events After Reporting Period [Line Items]    
Payment of loan $ 95.5