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Recoverable taxes (Details) - MXN ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Disclosure of Recoverable taxes [Abstract]    
Valued Added Tax $ 2,262,172 $ 2,075,615
Income Tax 137,408 146,333
Other 8,294 8,427
Total recoverable taxes $ 2,407,874 $ 2,230,375