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Accounts receivable - Net: (Tables) | 12 Months Ended
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Dec. 31, 2018
Trade and other receivables [abstract] |
Disclosure of detailed information about trade and other receivables [text block] |
|  | December 31, |
|  | 2017 |  |  | 2018 |
Clients |  | Ps | 858,900 |  |  | Ps | 991,033 |
Less: impairment provision |  |  | (173,398 | ) |  |  | (179,639 | )
Adoption effect IFRS 9 |  |  |  |  |  |  | (18,284 | )
Total accounts receivable |  | Ps | 685,502 |  |  | Ps | 793,110 |
Disclosure of financial assets that are either past due or impaired [text block] | The maturity analysis of past due accounts receivable is as follows:
|  | December 31, |
|  | 2017 |
Three months |  | Ps | 137,155 |
From three to six months |  |  | 71,049 |
More than six months |  |  | 157,999 |
|  |  | 366,203 |
Minus: |  |  |  |
Past due accounts receivable not impaired |  |  | 192,805 |
Amount of the estimation for impairment |  | Ps | 173,398 |
The movements in the impairment provision shown in the next page.
Provision for impairment at January 1, 2016 |  |  | 128,221 |
Application to the provision during the period |  |  | (510 | )
Provision for impairment at January 1, 2017 |  | Ps | 127,711 |
Application to the provision in Mexico during the period |  |  | 36,621 |
Aerostar’s provision impairment |  |  | 6,690 |
Airplan’s provision impairment |  |  | 2,376 |
Provision for impairment at December 31, 2017 |  |  | 173,398 |
Application to the provision in Mexico during the period |  |  | (35,403 | )
Aerostar’s provision impairment |  |  | 20,128 |
Airplan’s provision impairment |  |  | 3,232 |
Valuation IFRS 9 provision |  |  | 18,284 |
Provision for impairment at December 31, 2018 |  | Ps | 179,639 |
Disclosure of detailed information for provision for losses for accounts receivable and contract assets [Table Text Block] | On that basis, the provision for losses at December 31, 2018 and at January 1, 2018 (for adoption of IFRS 9) was determined as follows for accounts receivable and for contract assets:
|  |  |  |  |  |  |  |  |  |  |  |  |  | More than |
Expected loss rate: |  | Due to expire |  |  | 1 to 90 |  |  | 91 to 180 |  |  | 181 to 365 |  |  | 365 |
Mexico |  |  | 0.02 | % |  |  | 0.02 | % |  |  | 0.02 | % |  |  | 100 | % |  |  | 100 | %
Aerostar |  |  | 0.25 | % |  |  | 0.25 | % |  |  | 15.00 | % |  |  | 100 | % |  |  | 100 | %
Airplan |  |  | 0.88 | % |  |  | 0.88 | % |  |  | 0.88 | % |  |  | 100 | % |  |  | 100 | %
|  |  |  |  |  |  |  |  |  |  |  |  |  | More |  |  | Total estimate |
At January 1, 2018 |  | Due to expire |  |  | 1 to 90 |  |  | 91 to 180 |  |  | 181 to 365 |  |  | than 365 |  |  | 01/01/18 |
Mexico’s accounts receivables |  | Ps |  |  |  | Ps |  |  |  | Ps |  |  |  | Ps | 37,102 |  |  | Ps | 127,230 |  |  | Ps | 164,332 |
Mexico’s provision impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 37,102 |  |  |  | 127,230 |  |  |  | 164,332 |
Aerostar’s accounts receivables |  |  | 111,731 |  |  |  | 62,764 |  |  |  | 28,549 |  |  |  |  |  |  |  | 18,240 |  |  |  | 221,285 |
Aerostar’s provision impairment |  |  | 279 |  |  |  | 158 |  |  |  | 4,282 |  |  |  |  |  |  |  | 18,240 |  |  |  | 22,958 |
Airplan’s accounts receivables |  |  |  |  |  |  | 183,985 |  |  |  |  |  |  |  | 2,772 |  |  |  |  |  |  |  | 186,757 |
Airplan’s provision impairment |  |  |  |  |  |  | 1,619 |  |  |  |  |  |  |  | 2,772 |  |  |  |  |  |  |  | 4,391 |
Total provision estimate |  | Ps | 279 |  |  | Ps | 1,776 |  |  | Ps | 4,282 |  |  | Ps | 39,874 |  |  | Ps | 145,471 |  |  | Ps | 191,682 |
|  |  |  |  |  |  |  |  |  |  |  |  |  | More |  |  | Total estimate |
At December 31, 2018 |  | Due to expire |  |  | 1 to 90 |  |  | 91 to 180 |  |  | 181 to 365 |  |  | than 365 |  |  | 31/12/2018 |
Mexico’s accounts receivables |  | Ps | 93 |  |  | Ps | 604 |  |  | Ps | 1,252 |  |  | Ps | 495 |  |  | Ps | 128,804 |  |  | Ps | 131,248 |
Mexico’s provision impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 495 |  |  |  | 128,804 |  |  |  | 129,299 |
Aerostar’s account receivables |  |  | 154,235 |  |  |  | 49,645 |  |  |  | 239 |  |  |  | 5,790 |  |  |  | 36,738 |  |  |  | 246,647 |
Aerostar’s provision impairment |  |  | 386 |  |  |  | 124 |  |  |  | 36 |  |  |  | 5,790 |  |  |  | 36,738 |  |  |  | 43,073 |
Airplan’s accounts receivables |  |  |  |  |  |  | 183,223 |  |  |  |  |  |  |  | 5,653 |  |  |  |  |  |  |  | 188,876 |
Airplan’s provision impairment |  |  |  |  |  |  | 1,612 |  |  |  |  |  |  |  | 5,653 |  |  |  |  |  |  |  | 7,265 |
Total provision estimate |  | Ps | 386 |  |  | Ps | 1,737 |  |  | Ps | 36 |  |  | Ps | 11,938 |  |  | Ps | 165,542 |  |  | Ps | 179,639 |

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