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Related party balances and transactions - Additional information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Related party balances and transactions |  |
Lease liabilities | $ 3,470 | $ 4,677
Transactions related to variable equipment leases with other related parties that are excluded from the lease liability | $ 4,445 | 5,969
Payment for acquisitions |  | 30,949
Time deposits |  |
Related party balances and transactions |  |
Interest rate | 8.00% |
Other related parties |  |
Related party balances and transactions |  |
Other financial assets | $ 69,729 | 44,637
Other related parties | Corporacion America S.A. |  |
Related party balances and transactions |  |
Payment for acquisitions |  | 30,949
Other related parties | Loans |  |
Related party balances and transactions |  |
Other financial assets | 16,700 | 15,100
Other related parties | Time deposits |  |
Related party balances and transactions |  |
Other financial assets | $ 50,000 | $ 25,000

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- Definition Lease liabilities related to related party transaction. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represent amount related to acquisitions in subsidiaries. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Transaction related to variable equipment leases with other related parties that are excluded from the lease liability related to related party transaction. + References No definition available. + Details
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Namespace Prefix: | caap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The interest rate on borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2025-01-01 -Paragraph 7 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2025-en-r&anchor=para_7&doctype=Standard -URIDate 2025-03-27 + Details
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Balance Type: | na
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
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Balance Type: | na
Period Type: | duration

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- Definition The amount of financial assets that the entity does not separately disclose in the same statement or note. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 54 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_d&doctype=Standard -URIDate 2025-03-27 + Details
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Balance Type: | debit
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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |