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Intangible assets, airport concessions - Net: (Details) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Intangible assets and goodwill | $ 20,284,126 | $ 19,022,311
Additions other than through business combinations, intangible assets other than goodwill |  | 1,261,815
Acquisitions through business combinations, intangible assets and goodwill |  |
Increase (decrease) through net exchange differences, intangible assets and goodwill | 840,330 |
Impairment loss recognised in profit or loss, intangible assets and goodwill | (4,393,663) |
Intangible assets and goodwill | 50,353,003 | 20,284,126
Accumulated impairment [member] |  |
Intangible assets and goodwill | (7,560,520) | (7,023,669)
Additions other than through business combinations, intangible assets other than goodwill |  | (536,851)
Impairment loss recognised in profit or loss, intangible assets and goodwill | (1,143,211) |
Intangible assets and goodwill | (8,703,731) | (7,560,520)
Concessions [member] | Gross carrying amount [member] |  |
Intangible assets and goodwill | 27,639,119 | 25,854,357
Additions other than through business combinations, intangible assets other than goodwill |  | 1,784,762
Acquisitions through business combinations, intangible assets and goodwill | 20,487,170 |
Increase (decrease) through net exchange differences, intangible assets and goodwill | 484,045 |
Impairment loss recognised in profit or loss, intangible assets and goodwill | 1,449,729 |
Intangible assets and goodwill | 50,060,063 | 27,639,119
Licences and franchises [member] |  |
Impairment loss recognised in profit or loss, intangible assets and goodwill | 18,915 |
Licences and franchises [member] | Gross carrying amount [member] |  |
Intangible assets and goodwill | 205,527 | 191,623
Additions other than through business combinations, intangible assets other than goodwill |  | 13,904
Intangible assets and goodwill | 224,442 | $ 205,527
Goodwill [Member] |  |
Impairment loss recognised in profit or loss, intangible assets and goodwill | (4,719,096) |
Goodwill [Member] | Gross carrying amount [member] |  |
Acquisitions through business combinations, intangible assets and goodwill | 7,081,220 |
Increase (decrease) through net exchange differences, intangible assets and goodwill | 215,334 |
Intangible assets and goodwill | $ 7,296,554 |

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- Definition The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2017-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2017-03-01&anchor=para_118_e_i&doctype=Standard -URIDate 2017-03-09 + Details
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