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Net defined benefit assets (liabilities) - Summary of Employee Defined Benefit Plan (Detail) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
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Disclosure of net defined benefit asset (liability) [line items] |  |
Fair value of plan assets | $ 48,735 | $ 42,488
Employee benefits liability | (45,514) | (41,430)
Net defined benefit assets | 3,221 | 1,058
Defined benefit obligation |  |
Disclosure of net defined benefit asset (liability) [line items] |  |
Employee benefits liability | (45,122) | (41,042)
Other employee benefits |  |
Disclosure of net defined benefit asset (liability) [line items] |  |
Employee benefits liability | $ (392) | $ (388)

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- Definition Non-current net defined benefit assets and liabilities. + References No definition available. + Details
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Namespace Prefix: | cpa_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition The amount of assets held by retirement benefit plans. [Refer: Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2025-01-01 -Paragraph 35 -Subparagraph a -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_a_i&doctype=Standard -URIDate 2025-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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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Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition The amount of liabilities other than the actuarial present value of promised retirement benefits in retirement benefit plans. [Refer: Actuarial present value of promised retirement benefits] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2025-01-01 -Paragraph 35 -Subparagraph a -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2025-en-r&anchor=para_35_a_v&doctype=Standard -URIDate 2025-03-27 + Details
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Balance Type: | credit
Period Type: | instant

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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: |