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Operating segments (Tables) | 12 Months Ended
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Dec. 31, 2020
Operating segments |
Schedule of geographic segments |
|  | 2020 |  | 2019 |  | 2018
Operating revenues: |  |  |  |  |  |  |  |  |
Domestic (Mexico) |  | Ps. | 16,572,198 |  | Ps. | 24,594,797 |  | Ps. | 18,493,476
International: |  |  |  |  |  |  |  |  |
United States of America and Central America* |  |  | 5,998,615 |  |  | 10,230,824 |  |  | 8,811,674
Non-derivative financial instruments |  |  | (411,222) |  |  | (72,949) |  |  | —
Total operating revenues |  | Ps. | 22,159,591 |  | Ps. | 34,752,672 |  | Ps. | 27,305,150
*United States of America represents approximately 27%, 29% and 31% of total revenues from external customers in 2020, 2019 and 2018, respectively.

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