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Other Current Assets and Other Current Financial Assets - Summary of Other Current Financial Assets (Detail)
$ in Millions, $ in Millions
Dec. 31, 2018
MXN ($)
Dec. 31, 2018
USD ($)
 [2]
Dec. 31, 2017
MXN ($)
Disclosure Of Other Current Financial Assets [abstract]      
Restricted cash $ 101   $ 504
Derivative financial instruments (see Note 20) 735   233
Note receivables [1] 42   19
Other current financial assets $ 878 $ 45 $ 756
[1] The carrying value approximates its fair value as of December 31, 2018 and 2017.
[2] Convenience translation to U.S. dollars ($) - See Note 2.2.3