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Accrued liabilities - Other liabilities (Details) - MXN ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Analysis of accrued liabilities |  |  |
Balance at beginning of the year | $ 1,846,029 | $ 1,657,040 | $ 1,418,734
Increase for the year | 747,640 | 1,029,497 | 1,107,939
Payments | 716,884 | 840,508 | 869,633
Balance at end of the year | 1,876,785 | 1,846,029 | 1,657,040
Aircraft and engine lease return obligation |  |  |
Analysis of accrued liabilities |  |  |
Balance at beginning of the year | 1,831,045 | 1,647,977 | 1,408,039
Increase for the year | 725,506 | 1,015,391 | 1,099,597
Payments | 703,863 | 832,323 | 859,659
Balance at end of the year | 1,852,688 | 1,831,045 | 1,647,977
Employee profit sharing |  |  |
Analysis of accrued liabilities |  |  |
Balance at beginning of the year | 14,984 | 9,063 | 10,695
Increase for the year | 22,134 | 14,106 | 8,342
Payments | 13,021 | 8,185 | 9,974
Balance at end of the year | $ 24,097 | $ 14,984 | $ 9,063

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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 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
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- Details
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- Details
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