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Leases - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) Aircraft | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Disclosure of finance and operating lease by lessee [Line Items] |  |  |
Weighted average incremental borrowing rate | 3.37% | 3.37% |
Average duration of long-term lease agreement | 10 years |  |
Number of aircraft under lessor | Aircraft | 2 |  |
Carrying amount of aircraft under operating lease | $ 12.3 | $ 37.7 |
Scheduled expiration date of lease | 2022 |  |
Total lease income amounts | $ 3.2 | 3.5 | $ 3.5
Total liability related to leases including the provision of dismantling | $ 255.5 | $ 328.9 |

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- Definition Average lease term. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Carrying amount of fixed assets under operating lease + 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 Disclosure Of Finance And Operating Lease By Lessee + References No definition available. + Details
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Namespace Prefix: | cpa_
Data Type: | xbrli:stringItemType
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- Definition Lease liabilities including dismantling provision. + References No definition available. + Details
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Namespace Prefix: | cpa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Minimum operating lease payments receivable recognized as income. + References No definition available. + Details
Name: | cpa_MinimumOperatingLeasePaymentsReceivableRecognizedAsIncome
Namespace Prefix: | cpa_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Number of aircraft under lessor. + References No definition available. + Details
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Data Type: | xbrli:decimalItemType
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Period Type: | duration

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- Definition Scheduled expiration date of lease. + References No definition available. + Details
Name: | cpa_ScheduledExpirationDateOfLease
Namespace Prefix: | cpa_
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Balance Type: | na
Period Type: | duration

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- Definition The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph C12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C -URIDate 2020-01-01 + Details
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