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Accrued Expenses Payable - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2020
Accrued expenses [abstract] |
Accrual expense settlement period | 12 months

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- Definition Accrual expense settlement period. + References No definition available. + Details
Name: | cpa_AccrualExpenseSettlementPeriod
Namespace Prefix: | cpa_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Accrued expenses. + References No definition available. + Details
Name: | cpa_AccruedExpensesAbstract
Namespace Prefix: | cpa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration