XML 133 R112.htm IDEA: XBRL DOCUMENT v3.22.1
Employee Benefits - Trust Assets (Details)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Mexican subsidiaries    
Variable return:    
Plan asset investment for related parties, percentage 10.00%  
Federal government instruments of the respective countries | Minimum    
Variable return:    
Fund assets, percentage 30.00%  
Level 1    
Variable return:    
Trust assets fixed and variable return percentage 100.00% 100.00%
Level 1 | Traded Securities    
Fixed return:    
Trust assets fixed return percentage 17.00% 27.00%
Level 1 | Bank instruments    
Fixed return:    
Trust assets fixed return percentage 10.00% 9.00%
Level 1 | Federal government instruments of the respective countries    
Fixed return:    
Trust assets fixed return percentage 35.00% 29.00%
Level 1 | Publicly traded shares    
Variable return:    
Trust assets variable return percentage 38.00% 35.00%