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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 ($)
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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

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