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Consolidated statements of cash flows: (Details) $ in Thousands, $ in Millions |  | 12 Months Ended
--- | --- | ---
Jun. 02, 2015 MXN ($) | Jun. 02, 2015 COP ($) | Dec. 31, 2018 MXN ($) | Dec. 31, 2017 MXN ($) | Dec. 31, 2016 MXN ($)
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |  |
Bank loans (Note 11) |  |  | $ 175,515 | $ 173,471 |
Bank loans (Note 11) |  |  | 7,042,598 | 10,321,382 |
Long-term debt (Note 12) |  |  | 6,957,678 | 7,149,177,000 |
Interest expense |  |  | 1,230,651 | 618,831 | $ 126,186
Proceeds from bank loans |  |  |  | 8,000,000 |
Interest paid |  |  | 1,139,071 | 628,222 | 106,873
Payments of the long term debt and bank loan | $ 2,897,404 | $ 440 | 3,090,124 | 5,339,338 |
Airplan [Member] |  |  |  |  |
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |  |
Bank loans (Note 11) |  |  | 3,424,897 |  |
Deuda a largo Plazo [Member] |  |  |  |  |
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |  |
Accounts payable |  |  | 324,590 | 340,288 |
Long-term debt (Note 12) |  |  | 6,957,678 | 7,149,177 |
Non-current portion of non-current secured bank loans received |  |  | 7,489,465 |  |
Interest expense |  |  | 475,110 | 295,834 |
Interest paid |  |  | (646,418) | (277,068) |
Payments of the long term debt and bank loan |  |  |  | (102,907) |
Foreign currency translation |  |  | (35,889) | 390,643 |
Non-current portion of non-current secured bank loans received |  |  | 7,282,268 | 7,489,465 |
Deuda a largo Plazo [Member] | Aerostar and Airplan [Member] |  |  |  |  |
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |  |
Bank loans (Note 11) |  |  |  | 7,182,963 |
Prstamos bancarios [Member] |  |  |  |  |
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |  |
Bank loans (Note 11) |  |  | 175,515 | 173,741 |
Bank loans (Note 11) |  |  | 7,042,598 | 10,321,382 |
Non-current portion of non-current secured bank loans received |  |  | 10,494,853 | 4,460,776 |
Interest expense |  |  | 696,641 | 322,996 |
Proceeds from bank loans |  |  |  | 8,000,000 |
Interest paid |  |  | (492,653) | (351,152) |
Payments of the long term debt and bank loan |  |  | (3,090,124) | (5,339,338) |
Foreign currency translation |  |  | (166,301) | 217,385 |
Exchange (income) / loss on foreign currency |  |  | (224,303) | (240,531) |
Non-current portion of non-current secured bank loans received |  |  | $ 7,218,113 | 10,494,853 | $ 4,460,776
Prstamos bancarios [Member] | Airplan [Member] |  |  |  |  |
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |  |
Bank loans (Note 11) |  |  |  | $ 3,424,717 |

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