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Accrued liabilities - Other liabilities (Details) - MXN ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Analysis of accrued liabilities |  |  |
Balance at beginning of the year | $ 497,446 | $ 420,755 | $ 159,499
Increase for the year | 788,720 | 946,324 | 1,035,724
Payments | 840,508 | 869,633 | 774,468
Balance at end of the year | 445,658 | 497,446 | 420,755
Aircraft lease return obligation |  |  |
Analysis of accrued liabilities |  |  |
Balance at beginning of the year | 488,383 | 410,060 | 149,326
Increase for the year | 774,614 | 937,982 | 1,025,757
Payments | 832,323 | 859,659 | 765,023
Balance at end of the year | 430,674 | 488,383 | 410,060
Employee profit sharing |  |  |
Analysis of accrued liabilities |  |  |
Balance at beginning of the year | 9,063 | 10,695 | 10,173
Increase for the year | 14,106 | 8,342 | 9,967
Payments | 8,185 | 9,974 | 9,445
Balance at end of the year | $ 14,984 | $ 9,063 | $ 10,695

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- Definition The amount of liabilities that the entity does not separately disclose in the same statement or note. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of increase (decrease) in other liabilities. + References No definition available. + Details
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- Details
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- Details
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