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v3.19.1

Operating segments (Details) $ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) segment | Dec. 31, 2018 MXN ($) segment | Dec. 31, 2017 MXN ($) segment | Dec. 31, 2016 MXN ($) segment
Operating segments |  |  |  |
Number of geographic segments | segment | 2 | 2 | 2 | 2
Total operating revenues | $ 1,387,252 | $ 27,305,150 | $ 24,788,186 | $ 23,471,560
Domestic (Mexico) |  |  |  |
Operating segments |  |  |  |
Total operating revenues |  | 18,493,476 | 17,272,946 | 15,694,044
United States of America and Central America |  |  |  |
Operating segments |  |  |  |
Total operating revenues |  | $ 8,811,674 | $ 7,515,240 | $ 7,777,516
United States of America |  |  |  |
Operating segments |  |  |  |
Percentage of total revenues from external customers | 32.00% | 32.00% | 30.00% | 32.00%

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