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v3.21.1

Operating segments (Details) $ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) segment | Dec. 31, 2020 MXN ($) segment | Dec. 31, 2019 MXN ($) segment | Dec. 31, 2018 MXN ($) segment
Operating segments |  |  |  |
Number of geographic segments | segment | 2 | 2 | 2 | 2
Total operating revenues | $ 1,110,828 | $ 22,159,591 | $ 34,752,672 | $ 27,305,150
Non-derivatives financial instruments | $ (20,614) | (411,222) | (72,949) |
Domestic (Mexico) |  |  |  |
Operating segments |  |  |  |
Total operating revenues |  | 16,572,198 | 24,594,797 | 18,493,476
United States of America and Central America |  |  |  |
Operating segments |  |  |  |
Total operating revenues |  | $ 5,998,615 | $ 10,230,824 | $ 8,811,674
United States of America |  |  |  |
Operating segments |  |  |  |
Percentage of total revenues from external customers | 27.00% | 27.00% | 29.00% | 31.00%

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