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Cash and Cash Equivalents - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of cash and cash equivalents [line items] |  |
Collateral pledged | $ 5.9 | $ 0.0
Bottom of range [member] |  |
Disclosure of cash and cash equivalents [line items] |  |
Time deposits interest rate | 0.24% | 1.71%
Top of range [member] |  |
Disclosure of cash and cash equivalents [line items] |  |
Time deposits interest rate | 0.35% | 1.98%

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- Definition Adjustment for interest rate earning time deposit. + References No definition available. + Details
Name: | cpa_AdjustmentForInterestRateEarningTimeDeposit
Namespace Prefix: | cpa_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Disclosure of cash and cash equivalents. + References No definition available. + Details
Name: | cpa_DisclosureOfCashAndCashEquivalentsLineItems
Namespace Prefix: | cpa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The amount of cash collateral pledged that is subject to an enforceable master netting arrangement or similar agreement and that is not set off against financial liabilities. [Refer: Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph IG40D -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_IG40D&doctype=Implementation%20Guidance -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 13C -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_13C_d_ii&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_CashCollateralPledgedSubjectToEnforceableMasterNettingArrangementOrSimilarAgreementNotSetOffAgainstFinancialLiabilities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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