XML 33 R146.htm IDEA: XBRL DOCUMENT v3.20.1
Retirement Employee Benefits - Summary of Movements in Present Value of Defined Obligation (Detail) - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of Defined Benefit Plans [Abstract]      
Opening defined benefit obligation $ 120,606 $ 112,980 $ 92,575
Plan modifications 956    
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)  
New measurement (gains) / losses:      
Actuarial losses resulting from changes in financial and demographic assumptions 1,404 161 2,602
Benefits paid (3,308)    
Ending defined benefit obligation $ 144,743 $ 120,606 $ 112,980