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Accounts Payable, Accrued Liabilities and Asset Retirement Obligations - Summary of Balance of Accrued Liabilities (Detail)
$ in Thousands, $ in Millions
Dec. 31, 2020
MXN ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
MXN ($)
Current liabilities      
Direct employee benefits payable $ 18,965,160   $ 17,991,283
Contingencies 31,326,691   34,379,969
Total $ 50,291,851 $ 2,521 $ 52,371,252