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Intangible assets, airport concessions and goodwill - Net: - Movements of intangible assets of airport concessions (Details) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Intangible assets: |  |
Intangible assets and goodwill | $ 52,182,311 | $ 49,126,038
Foreign currency translation | 34,667 | 1,321,875
Additions | 1,756,371 | 1,734,398
Intangible assets and goodwill | 53,973,349 | 52,182,311
Accumulated amortization |  |
Intangible assets: |  |
Intangible assets and goodwill | (14,061,413) | (12,132,245)
Foreign currency translation | 92,993 | (79,297)
Additions | (1,915,289) | (1,849,871)
Intangible assets and goodwill | (15,883,709) | (14,061,413)
Concessions (Regulated Activity) |  |
Intangible assets: |  |
Intangible assets and goodwill | 52,685,526 | 50,586,636
Foreign currency translation | (284,573) | 1,059,370
Additions | 219,336 | 107,144
Disposals transfers | 2,113,556 | 932,376
Intangible assets and goodwill | 54,733,845 | 52,685,526
Contracts assets |  |
Intangible assets: |  |
Intangible assets and goodwill | 3,704,065 | 978,060
Foreign currency translation | 8,403 | 1,295
Additions | 3,146,143 | 3,036,386
Disposals transfers | (2,113,556) | (311,676)
Intangible assets and goodwill | 4,745,055 | 3,704,065
Contractor advance |  |
Intangible assets: |  |
Intangible assets and goodwill | 431,805 | 696,696
Foreign currency translation | (104) |
Additions | 278,496 | 355,809
Disposals transfers |  | (620,700)
Intangible assets and goodwill | 710,197 | 431,805
Licenses Mexico |  |
Intangible assets: |  |
Intangible assets and goodwill | 364,727 | 279,797
Additions | 27,685 | 84,930
Intangible assets and goodwill | 392,412 | 364,727
Commercial Right's (Unregulated Activity) |  |
Intangible assets: |  |
Intangible assets and goodwill | 6,490,236 | 6,149,729
Foreign currency translation | 182,071 | 340,507
Intangible assets and goodwill | 6,672,307 | 6,490,236
Goodwill | Gross carrying amount |  |
Intangible assets: |  |
Intangible assets and goodwill | 2,567,365 | 2,567,365
Foreign currency translation | 35,877 |
Intangible assets and goodwill | $ 2,603,242 | $ 2,567,365

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- Definition The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2021-01-01 -Paragraph 118 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=38&code=ifrs-tx-2021-en-r&anchor=para_118_e_i&doctype=Standard -URIDate 2021-03-24 + Details
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