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Income Taxes - Summary of Income Tax Expense (Benefit) (Detail) - MXN ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of income taxes [line items]      
Current $ 2,117,491 $ 1,849,551 $ 1,532,875
Deferred (248,450) (408,910) (266,302)
Income tax 1,869,041 1,440,641 1,266,573
ISR [Member]      
Disclosure of income taxes [line items]      
Current 2,117,491 1,849,551 1,532,875
Deferred (248,450) (408,910) (266,302)
Income tax $ 1,869,041 $ 1,440,641 $ 1,266,573