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Retirement Employee Benefits - Summary of Amounts Recognized in Consolidated Statement of Profit or Loss and Other Comprehensive Income (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of Defined Benefit Plans [Abstract]      
Current service cost $ 13,152 $ 12,775 $ 9,459
Interest cost 12,048 8,907 8,344
Actuarial gains (115) (3,359)  
Cost per service passed for modification or reduction   (10,858)  
Cost per service for plan modification 956    
Benefits paid (3,308)    
Components of defined benefit costs recognized in net income (Note 24) 22,735 7,465 17,803
Measurement of net defined benefit liability:      
Actuarial losses arising from changes in financial and demographic assumptions recognized in other comprehensive income 1,404 161 2,602
Total recognized as employee benefit cost $ 24,139 $ 7,626 $ 20,405