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Other Assets, Net - Summary of Analysis of Other Assets (Detail)
$ in Thousands, $ in Millions
Dec. 31, 2020
MXN ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
MXN ($)
Current portion:      
Advances to suppliers (different from PP&E and inventories) $ 7,600,644   $ 7,718,343
Prepaid insurance 1,300,019   978,927
Other 93,244   776,164
Other current assets 8,993,907 $ 451 9,473,434
Non-current portion:      
Recoverable taxes 11,559,961   14,647,726
Prepayments for the use of fiber optics 2,709,358   2,095,556
Judicial Deposits 15,402,840   19,506,147
Prepaid expenses 8,743,667   5,642,590
Total $ 38,415,826   $ 41,892,019