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Consolidated statements of cash flows: (Details) - MXN ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Oct. 19, 2017
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |
Accounts payable | $ 340,288 |  |  |
Bank loans (Note 11) | 173,471 | $ 58,336 |  |
Bank loans (Note 11) | 10,321,382 | 4,402,440 |  |
Long-term debt (Note 12) | 7,149,177 |  |  |
Non-current portion of non-current secured bank loans received | 4,460,776 | 3,678,128 |  |
Finance costs | 618,831 | 126,186 | $ 97,017 |
Borrowing costs incurred | 295,834 |  |  |
Proceeds from bank loans | 8,000,000 |  |  |
Interest paid, classified as financing activities | 628,222 | 106,873 | 97,017 |
Interest paid on long term debt | (277,068) |  |  |
Repayments of borrowings, classified as financing activities | 5,339,338 |  |  |
Repayments of bonds, notes and debentures | 102,907 |  |  |
Foreign currency translation on bank loan | 217,385 |  |  |
Foreign currency translation on long term debt | 390,643 |  |  |
Exchange (income) / loss on foreign currency | (240,711) | 763,335 |  |
Non-current portion of non-current secured bank loans received | 10,494,853 | $ 4,460,776 | $ 3,678,128 |
Borrowings | 7,489,465 |  |  |
Airplan [Member] |  |  |  |
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |
Bank loans (Note 11) |  |  |  | $ 3,424,897
Bank loans (Note 11) | 3,424,897 |  |  |
Aerostar and Airplan [Member] |  |  |  |
Disclosure Of Consolidated Statements Of Cash Flows [Line Items] |  |  |  |
Long-term debt (Note 12) | $ 7,182,963 |  |  |

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