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Commitments and contingencies: (Details) - Office Lease Space [Member] $ in Thousands | Dec. 31, 2017 MXN ($)
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Minimum lease payments payable under non-cancellable operating lease | $ 16,117
Not later than one year [member] |
Minimum lease payments payable under non-cancellable operating lease | 5,372
Later than one year [member] |
Minimum lease payments payable under non-cancellable operating lease | $ 10,745

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- Definition The amount of future minimum lease payments payable under non-cancellable operating leases. Minimum lease payments are payments over the lease term that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2019-01-01 -Name IAS -Number 17 -IssueDate 2017-01-01 -Paragraph 35 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_35_a&doctype=Standard&book=B -URIDate 2017-03-09 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | asurb_OperatingLeaseAgreementAxis=asurb_OfficeLeaseSpaceMember
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Data Type: | na
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- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanOneYearMember
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Data Type: | na
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- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearMember
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Data Type: | na
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