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Employee Cost - Summary of Employee Cost (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disclosure Of Employee Cost [Abstract]      
Wages and salaries $ 664,619 $ 605,708 $ 541,186
Other remunerations 100,638 83,984 73,031
Social benefits 81,073 72,733 64,934
Severance payments 19,030 8,877 13,132
Labor union fees 19,217 18,420 17,673
Taxes on employee benefits 12,360 10,886 9,383
PTU 2,647 7,900 7,804
Retirement employee benefits 31,382 22,735 7,465
Others 39,515 45,825 39,022
Total employee cost $ 970,481 $ 877,068 $ 773,630