XML 118 R107.htm IDEA: XBRL DOCUMENT
v3.21.1

Critical accounting judgments and key sources of estimation uncertainty: (Details) - MXN ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Ifrs Statement [Line Items] |  |
Expected Revenue From Airplan | $ 17,540,245 | $ 19,217,035
Original concession period for operating rights | 50 years |
Airplan |  |
Ifrs Statement [Line Items] |  |
Original concession period for operating rights | 40 years |
Minimum | Airplan |  |
Ifrs Statement [Line Items] |  |
Original concession period for operating rights | 24 years |

X
- Definition The concession period for operating rights original term. + References No definition available. + Details
Name: | asurb_ConcessionPeriodForOperatingRightsOriginalTerm
Namespace Prefix: | asurb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents expected revenue. + References No definition available. + Details
Name: | asurb_ExpectedRevenueFromAirplan
Namespace Prefix: | asurb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | asurb_IfrsStatementLineItems
Namespace Prefix: | asurb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=asurb_AirplanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_RangeAxis=ifrs-full_BottomOfRangeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |