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Income tax incurred and deferred: (Tables) | 12 Months Ended
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Dec. 31, 2018
Income taxes [Abstract] |
Disclosure of deferred taxes [text block] | The IT provision at December 31, 2017 and 2018 is as follows:
|  | December 31, |
Deferred tax asset: |  | 2017 |  |  | 2018 |
Deferred tax recoverable within the following 12 months |  | Ps | 73,710 |  |  | Ps | 53,121 |
Deferred tax recoverable after 12 months |  |  | 253,310 |  |  |  | 250,491 |
Recoverable asset tax |  |  |  |  |  |  |  |
|  |  | 327,020 |  |  |  | 303,612 |
Deferred tax liability : |  |  |  |  |  |  |  |
Deferred tax payable after 12 months |  |  | (3,360,950 | ) |  |  | (3,385,280 | )
Deferred tax liability - Net |  | Ps | (3,033,930 | ) |  | Ps | (3,081,668 | )
Components of income tax expense [text block] | The IT provision at December 31, 2016, 2017 and 2018 is as follows: Mexico:
|  | 2016 |  |  | 2017 |  |  | 2018 |
Current IT |  | Ps | 1,502,976 |  |  | Ps | 1,908,646 |  |  | Ps | 1,766,083 |
Deferred IT |  |  | (101,792 | ) |  |  | (312,091 | ) |  |  | 13,116 |
IT provision |  | Ps | 1,401,184 |  |  | Ps | 1,596,555 |  |  | Ps | 1,779,199 |
Aerostar : |  |  |  |  |  |  |  |  |  |  |  |
IT deferred for the year ended December 31, 2018 and for the period from May 26 to December 31, 2017 |  | Ps |  |  |  | Ps | 28,678 |  |  | Ps | 33,879 |
Airplan : |  |  |  |  |  |  |  |  |  |  |  |
Current IT |  | Ps |  |  |  | Ps | 19,551 |  |  | Ps | (20,098 | )
Deferred IT |  |  |  |  |  |  | (9,337 | ) |  |  | 2,981 |
IT Provision Airplan for the year ended |  |  |  |  |  |  |  |  |  |  |  |
December 31, 2018 and for the period |  |  |  |  |  |  |  |  |  |  |  |
October 19, to December 31, 2017 |  | Ps |  |  |  | Ps | 10,214 |  |  | Ps | (17,117 | )
Total IT provision |  | Ps | 1,401,184 |  |  | Ps | 1,635,447 |  |  | Ps | 1,795,961 |
Reconciliation of income tax rate [text block] | The reconciliation between the statutory and effective income tax rates is shown below:
|  | 2016 |  |  | 2017 |  |  | 2018 |
Consolidated income before IT and joint venture equity method: |  | Ps | 4,887,130 |  |  | Ps | 8,498,889 |  |  | Ps | 6,916,699 |
Plus (less): |  |  |  |  |  |  |  |  |  |  |  |
Net (loss) income before taxes of Airplan and Aerostar |  |  |  |  |  |  | 16,011 |  |  |  | (297,179 | )
Net (loss) income before taxes of subsidiaries in Mexico not subject to IT |  |  | (56,415 | ) |  |  | (62,327 | ) |  |  | (89,685 | )
Income before provisions for income taxes |  |  | 4,830,715 |  |  |  | 8,452,573 |  |  |  | 6,529,835 |
Statutory IT rate |  |  | 30 | % |  |  | 30 | % |  |  | 30 | %
IT that would result from applying the IT rate to book profit before income taxes |  |  | 1,449,214 |  |  |  | 2,535,772 |  |  |  | 1,958,951 |
Non-deductible items and other permanent differences |  |  | 11,908 |  |  |  | 8,693 |  |  |  | 15,126 |
Gain on business combination |  |  |  |  |  |  | (2,108,760 | ) |  |  |  |
Goodwill impairment |  |  |  |  |  |  | 1,415,729 |  |  |  |  |
Annual adjustment for tax inflation |  |  | (10,974 | ) |  |  | (2,406 | ) |  |  | 12,101 |
Accounting disconnect inflation |  |  | (91,928 | ) |  |  | (249,336 | ) |  |  | (189,237 | )
Recognition of deferred income tax at the Huatulco Airport (1) |  |  | 44,020 |  |  |  |  |  |  |  |  |
Recognition for the year in Aerostar (2) |  |  |  |  |  |  | 28,678 |  |  |  | 33,879 |
Recognition for the year in Airplan (2) |  |  |  |  |  |  | 10,214 |  |  |  | (17,117 | )
Other non-taxable earnings |  |  | (1,056 | ) |  |  | (3,137 | ) |  |  | (17,742 | )
IT provision |  | Ps | 1,401,184 |  |  | Ps | 1,635,447 |  |  | Ps | 1,795,961 |
Effective IT rate |  |  | 29 | % |  |  | 19 | % |  |  | 28 | %
| (1) | Based on the tax projections at December 31, 2017, the Huatulco Airport is expected to pay income tax in the future. Accordingly, the Company decided to recognize deferred income tax. This recognition increased the effective rate by 3%.
| (2) | As of June 1, 2018, Aerostar consolidates into the Company and as of October 19, 2017, Airplan consolidates financially into the Company.
Schedule of temporary difference investments subsidiaries recognized deferred income tax [text block] | Temporary difference related to investments in subsidiaries for which no liabilities have been recognized for deferred income tax:
Undistributed utilities |  | Ps | 3,089,012 |
Tax rate |  |  | 30 | %
Deferred income tax liabilities unrecognized with the previous temporary differences |  | Ps | 926,704 |
Disclosure of detailed information about of changes in deferred tax asset and liability [text block] | The net movements of the deferred tax asset and liability for the year are as follows:
|  | Provision |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | for loan |  |  |  |  |  | Recoverable |  |  | Foreign |  |  |  |  |  |  |
|  | portfolio |  |  | Concessioned |  |  | asset |  |  | currency |  |  |  |  |  |  |
|  | impairment |  |  | assets |  |  | tax |  |  | translarion |  |  | Other |  |  | Total |
Balances at January 1, 2016 |  | Ps | (31,576) |  |  | Ps | 1,766,981 |  |  | Ps | (186,875) |  |  | Ps |  |  |  | Ps | (24,808) |  |  | Ps | 1,523,722 |
Recovery of asset tax |  |  |  |  |  |  |  |  |  |  | 34,090 |  |  |  |  |  |  |  |  |  |  |  | 34,090 |
Tax charged or credited in the statement of income |  |  | (2,354 | ) |  |  | (94,340 | ) |  |  |  |  |  |  |  |  |  |  | (5,098 | ) |  |  | (101,792 | )
|  |  | (2,354 | ) |  |  | (94,340 | ) |  |  | 34,090 |  |  |  |  |  |  |  | (5,098 | ) |  |  | (67,702 | )
Balances at December 31, 2016 |  |  | (33,930 | ) |  |  | 1,672,641 |  |  |  | (152,785 | ) |  |  |  |  |  |  | (29,906 | ) |  |  | 1,456,020 |
Recovery of asset tax |  |  |  |  |  |  |  |  |  |  | 152,785 |  |  |  |  |  |  |  |  |  |  |  | 152,785 |
Initial recognition of Aerostar |  |  |  |  |  |  | 203,512 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 203,512 |
Initial valuation in Aerostar investment |  |  |  |  |  |  | 605,382 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 605,382 |
Net assets acquired under the business combination of Airplan |  |  |  |  |  |  | 281,899 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 281,899 |
Effect of foreign currency translation Aerostar |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 35,117 |  |  |  |  |  |  |  | 35,117 |
Initial recognition of Airplan |  |  |  |  |  |  | 356,296 |  |  |  |  |  |  |  |  |  |  |  | 223,289 |  |  |  | 579,585 |
Effect of foreign currency translation Airplan |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,458 |  |  |  | 4,922 |  |  |  | 12,380 |
|  |  |  |  |  |  | 1,447,089 |  |  |  | 152,785 |  |  |  | 42,575 |  |  |  | 228,211 |  |  |  | 1,870,660 |
Tax charged or credited in the statement of income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airplan |  |  |  |  |  |  | (6,191 | ) |  |  |  |  |  |  |  |  |  |  | (3,146 | ) |  |  | (9,337 | )
Aerostar |  |  |  |  |  |  | 28,678 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,678 |
Mexico |  |  | (10,986 | ) |  |  | (283,899 | ) |  |  | - |  |  |  |  |  |  |  | (17,206 | ) |  |  | (312,091 | )
|  |  | (10,986 | ) |  |  | (261,412 | ) |  |  | - |  |  |  |  |  |  |  | (20,352 | ) |  |  | (292,750 | )
Balances at December 31, 2017 |  | Ps | (44,916) |  |  | Ps | 2,858,318 |  |  | Ps | - |  |  | Ps | 42,575 |  |  | Ps | 177,953 |  |  | Ps | 3,033,930 |
Effect of foreign currency translation Airplan and Aerostar |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,427 |  |  |  | (22,665 | ) |  |  | (2,238 | )
|  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20,427 |  |  |  | (22,665 | ) |  |  | (2,238 | )
Tax charged or credited in the statement of income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Airplan |  |  | (2,468 | ) |  |  | 178,236 |  |  |  |  |  |  |  | (1,433 | ) |  |  | (171,354 | ) |  |  | 2,981 |
Aerostar |  |  |  |  |  |  | 35,440 |  |  |  |  |  |  |  | (1,561 | ) |  |  |  |  |  |  | 33,879 |
México |  |  | 10,510 |  |  |  | 7,755 |  |  |  | - |  |  |  |  |  |  |  | (5,149 | ) |  |  | 13,116 |
|  |  | 8,042 |  |  |  | 221,431 |  |  |  | - |  |  |  | (2,994 | ) |  |  | (176,503 | ) |  |  | 49,976 |
Balances at December 31, 2018 |  | Ps | (36,874) |  |  | Ps | 3,079,749 |  |  | Ps | - |  |  | Ps | 60,008 |  |  | Ps | (21,215) |  |  | Ps | 3,081,668 |
Disclosure of detailed information about tax credits [text block] | At December 31, 2018 and 2017, the tax credits are as follows:
|  | December 31, |
|  | 2017 |  |  | 2018 |
Income tax |  | Ps | 74,885 |  |  | Ps | 345,730 |
Asset tax |  |  | 8,006 |  |  |  |  |
|  | Ps | 82,891 |  |  | Ps | 345,730 |
Disclosure of detailed information on unused tax losses explanatory [text block] | Aerostar had cumulative tax loss carry forwards whose right to be amortized against future taxable income expires as shown below:
|  |  |  |  | Year of
Year of loss |  | Amount |  |  | expiration
2012 |  | USD | 7,085 |  |  | Ps. | 139,220 |  |  | 2022
2013 |  |  | 37,256 |  |  |  | 732,080 |  |  | 2023
2014 |  |  | 25,545 |  |  |  | 501,959 |  |  | 2024
2015 |  |  | 28,520 |  |  |  | 560,418 |  |  | 2025
2016 |  |  | 27,745 |  |  |  | 545,189 |  |  | 2026
2017 |  |  | 22,248 |  |  |  | 437,173 |  |  | 2027
2018 |  |  | 17,482 |  |  |  | 343,521 |  |  | 2028
Total |  | USD | 165,881 |  |  | Ps. | 3,259,560 |  |  |
Accounting Disconnect Inflation [text block] | Following are the principal temporary differences with respect to deferred tax:
|  | Period ended on |
|  | December 31, |
|  | 2017 |  |  | 2018 |
Deferred income tax asset: |  |  |  |  |  |  |  |
Deferred income tax asset:: |  |  |  |  |  |  |  |
Temporary liabilities |  | Ps | 48,439 |  |  | Ps | 53,121 |
Fair value of long-term debt |  |  | 208,394 |  |  |  | 213,617 |
Allowance for doubtful accounts |  |  | 44,916 |  |  |  | 36,874 |
|  |  | 301,749 |  |  |  | 303,612 |
Deferred income tax payable: |  |  |  |  |  |  |  |
Fixed and intangible assets |  |  | (2,900,893 | ) |  |  | (3,139,757 | )
Temporary assets |  |  | (433,411 | ) |  |  | (244,502 | )
Amortization of expenses |  |  | (1,375 | ) |  |  | (1,021 | )
|  |  | (3,335,679 | ) |  |  | (3,385,280 | )
Deferred income tax liability, net |  | Ps | (3,033,930 | ) |  | Ps | (3,081,668 | )

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