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Costs and expenses by nature: (Details) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Expenses by nature [abstract] |  |  |  |
Termination benefits (Note 18.17) |  | $ 1,984 | $ 1,237 | $ 1,133
Short term benefits |  | 772,129 | 531,246 | 499,035
Employees' statutory profit sharing |  | 6,359 | 6,126 | 5,085
Electric power |  | 234,879 | 108,910 | 92,737
Maintenance and conservation |  | 401,479 | 229,904 | 214,439
Professional fees |  | 217,930 | 103,918 | 70,064
Insurance and bonds |  | 86,838 | 30,157 | 31,919
Surveillance services |  | 207,303 | 144,462 | 125,176
Cleaning services |  | 142,531 | 90,285 | 77,274
Technical assistance (Note 15.4) |  | 346,487 | 288,111 | 239,175
Right of use of assets under concession (DUAC) | [1] | 468,695 | 344,939 | 291,505
Amortization and depreciation of intangible asset, furniture and equipment |  | 1,166,114 | 529,660 | 468,996
Goodwill impairment (Note 8.1) |  | 4,719,096 |  |
Consumption of commercial items |  | 252,602 | 180,636 | 139,603
Construction services (Note 3.1.3) |  | 1,898,550 | 2,116,954 | 2,580,707
Financial assets impairment |  | 45,687 |  |
Other |  | 144,322 | 114,347 | 84,852
Total aeronautical and non-aeronautical services costs, costs of construction services and administrative expenses |  | $ 11,112,985 | $ 4,820,892 | $ 4,921,700
[1] | (1) As of December 31, 2017, DUAC by Ps.406,733 correspond to the consideration for the concessions in Mexico, which is equivalent to 5% of the gross revenues of each of the concessions, Ps.56,005 correspond to the consideration for the Airplan concession at 19% of gross revenues for the period from October 19 to December 31, 2017 and Ps.5,957 to the consideration for the Aerostar concession at 5% of the airport's gross receipts for the period from June 1, to December 31, 2017.

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- Definition Expenses associated with the cleaning service + References No definition available. + Details
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- Definition Expenses associated with the construction service. + References No definition available. + Details
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- Definition Expenses associated with the technical assistance + References No definition available. + Details
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- Definition The amount of depreciation expense. Depreciation is the systematic allocation of depreciable amounts of tangible assets over their useful lives. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of expenses aggregated according to their nature (for example, depreciation, purchases of materials, transport costs, employee benefits and advertising costs), and not reallocated among functions within the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_99&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of expense arising from the consumption of fuel. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of impairment loss on financial assets. [Refer: Financial assets; Impairment loss] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2018-01-01 -Name IFRS -Number 7 -IssueDate 2017-01-01 -Paragraph 20 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_20_e&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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- Definition The amount of interest expense on bonds issued. [Refer: Interest expense; Bonds issued] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of expenses that the entity does not separately disclose in the same statement or note when the entity uses the 'nature of expense' form for its analysis of expenses. [Refer: Expenses, by nature] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 102 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_102&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 99 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_99&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of long-term employee benefits other than post-employment benefits and termination benefits. Such benefits may include long-term paid absences, jubilee or other long-service benefits, long-term disability benefits, long-term profit-sharing and bonuses and long-term deferred remuneration. [Refer: Employee benefits expense] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 158 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_158&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of fees paid or payable for professional services. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of expense arising from services. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 85 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_85&doctype=Standard -URIDate 2017-03-09 + Details
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