XML 134 R121.htm IDEA: XBRL DOCUMENT v3.19.1
Income Taxes - Summary of Components of Recoverable Tax on Assets (Detail) - MXN ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Components Of Recoverable Tax On Assets [Abstract]      
Recoverable tax on assets paid $ 170,765 $ 250,551 $ 327,055
Unrecognized recoverable tax on assets paid $ (170,765) (225,209) (232,796)
Recognized recoverable tax on assets   $ 25,342 $ 94,259