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Balances and transactions with related parties: Receivable/Payable (Details) - MXN ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Related parties: |  |
Payables to related parties | $ (101,266) | $ (178,294)
Inversiones y Tecnicas Aeroportuarias, S. A. de C. V. |  |
Related parties: |  |
Payables to related parties | $ (101,266) | $ (178,294)

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- Definition The amount of payables due to related parties. + References No definition available. + Details
Name: | asurb_AmountOfTradeAndOtherPayablesToRelatedParties
Namespace Prefix: | asurb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Details
Name: | ifrs-full_CategoriesOfRelatedPartiesAxis=asurb_InversionesYTecnicasAeroportuariasSADeCVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |