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v3.20.1

Subsequent Event: (Details) | 3 Months Ended
--- | ---
Mar. 31, 2020
Impact on revenue from operations |
Disclosure of non-adjusting events after reporting period [line items] |
Percentage of decrease in passengers | 6.30%

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- Definition Percentage of decrease in passenger traffic due to outbreak of covid-19 pandemic during the period. + References No definition available. + Details
Name: | asurb_PercentageOfDecreaseInPassengers
Namespace Prefix: | asurb_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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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
Name: | ifrs-full_DisclosureOfNonadjustingEventsAfterReportingPeriodLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_NonadjustingEventsAfterReportingPeriodAxis=asurb_ImpactOnRevenueFromOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |