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Improvements to Concession Assets - Summary of Improvements to Concession Assets (Detail) - MXN ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance $ 9,944,022 $ 8,912,544 $ 7,294,318
Additions 1,033,311 1,169,139 1,221,239
Divestitures (402) (23,497) (368)
Currency translation effect 5,929 (114,164) 397,355
Ending balance 10,982,860 9,944,022 8,912,544
Construction in-progress [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance 2,376,483 1,707,742 445,924
Additions 1,661,060 1,417,156 1,400,942
Transfers (1,669,128) (746,710) (147,806)
Currency translation effect 13,703 (1,705) 8,682
Ending balance 2,382,118 2,376,483 1,707,742
Improvements to concession assets [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance 11,779,768 10,902,668 9,909,384
Additions 6,366 304,042 331,044
Divestitures (7,919) (30,212) (436)
Transfers 1,669,128 746,710 147,806
Currency translation effect (5,694) (143,440) 514,870
Ending balance 13,441,649 11,779,768 10,902,668
Total investment [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance 14,156,251 12,610,410 10,355,308
Additions 1,667,426 1,721,198 1,731,986
Divestitures (7,919) (30,212) (436)
Currency translation effect 8,009 (145,145) 523,552
Ending balance 15,823,767 14,156,251 12,610,410
Accumulated amortization [Member]      
Disclosure of detailed information about service concession arrangements [Line Items]      
Beginning balance (4,212,229) (3,697,866) (3,060,990)
Additions (634,115) (552,059) (510,747)
Divestitures 7,517 6,715 68
Currency translation effect (2,080) 30,981 (126,197)
Ending balance $ (4,840,907) $ (4,212,229) $ (3,697,866)