XML 174 R112.htm IDEA: XBRL DOCUMENT v3.20.1
Employee Benefits - Analysis of Net Liability and Net Period Cost for Employee Benefit (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of net defined benefit liability (asset) [line items]      
Liabilities $ 152,507,058 $ 118,325,014  
Net period cost (benefit)      
Net period cost (benefit) 16,609,565 13,989,100 $ 13,636,182
Mexico [member]      
Disclosure of net defined benefit liability (asset) [line items]      
Liabilities 116,537,660 85,517,190  
Net period cost (benefit)      
Net period cost (benefit) 12,788,464 12,046,208 11,586,065
Puerto Rico [member]      
Disclosure of net defined benefit liability (asset) [line items]      
Liabilities 13,228,592 13,986,596  
Net period cost (benefit)      
Net period cost (benefit) 747,755 686,067 776,238
Europe [member]      
Disclosure of net defined benefit liability (asset) [line items]      
Liabilities 12,827,318 12,705,926  
Net period cost (benefit)      
Net period cost (benefit) 2,526,957 619,039 385,689
Brazil [member]      
Disclosure of net defined benefit liability (asset) [line items]      
Liabilities 9,503,738 5,666,694  
Net period cost (benefit)      
Net period cost (benefit) 511,964 579,432 735,855
Ecuador [member]      
Disclosure of net defined benefit liability (asset) [line items]      
Liabilities 409,750 448,608  
Net period cost (benefit)      
Net period cost (benefit) $ 34,425 $ 58,354 $ 152,335