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Property, Plant and Equipment, Net - Schedule of Relevant Information Related to Computation of Capitalized Borrowing Costs (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]        
Amount invested in the acquisition of qualifying assets $ 38,573,605   $ 46,528,232 $ 50,783,957
Capitalized interest   $ 1,527,259 $ 1,771,613 2,233,358
Capitalization rate   3.78% 3.72%  
Property, plant and equipment [member]        
Disclosure of detailed information about property, plant and equipment [line items]        
Capitalized interest   $ 1,527,259 $ 1,771,613 $ 2,233,358
Capitalization rate   4.00% 3.80% 4.40%