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Financial Instruments - Debt (Details) - MXN ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of Financial Assets and Financial Liabilities [Line Items]        
Carrying value $ 285,058 $ 252,940 $ 246,973 $ 172,630
Bank loans and notes payables        
Disclosure of Financial Assets and Financial Liabilities [Line Items]        
Carrying value 191,741 190,585    
Fair value $ 163,312 $ 198,232