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Other Assets, Net - Summary of Analysis of Other Assets (Detail)
$ in Thousands, $ in Millions
Dec. 31, 2018
MXN ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
MXN ($)
Current portion:      
Advances to suppliers (different from PP&E and inventories) $ 12,931,247   $ 9,536,654
Prepaid insurance 949,590   683,091
Costs of mobile equipment and computers associated with deferred revenues 599,628   6,182,010
Other 815,728   950,991
Other current assets 15,296,193 $ 777 17,352,746
Non-current portion:      
Recoverable taxes 11,514,455   12,249,372
Prepayments for the use of fiber optics 3,985,216   4,361,668
Prepaid expenses and judicial deposits 26,961,930   25,926,436
Total $ 42,461,601   $ 42,537,476