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Trade Accounts Receivable - Summary of Trade Accounts Receivable (Detail) - MXN ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of Trade Accounts Receivable [Abstract]      
Trade accounts receivable $ 1,412,958 $ 1,530,432 $ 1,444,037
Allowance for expected credit loss (146,953) (51,022) (48,675)
Trade accounts receivable $ 1,266,005 $ 1,479,410 $ 1,395,362