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Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Movements in Contingent Liabilities (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Disclosure of contingent liabilities [abstract]    
Beginning balance $ 31,326,691 $ 34,379,969
Business combination 0 292
Effect of translation 1,556,950 (4,290,753)
Increase of the year 7,425,182 7,442,292
Applications payments (4,079,190) (3,214,407)
Applications reversals (1,891,115) (2,990,702)
Ending balance $ 34,338,518 $ 31,326,691