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Significant Accounting Judgments, Estimates and Assumptions - Additional Information (Detail) - Aircraft	Dec. 31, 2020	Dec. 31, 2019
Disclosure of voluntary change in accounting policy [line items]
Salvage value assets rate	15.00%
Air crafts held for sale		14
Boeing 737-700 [member]
Disclosure of voluntary change in accounting policy [line items]
Air crafts held for sale	14

X

- Definition

Number of air crafts held for sale.

+ References

No definition available.

+ Details

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Namespace Prefix:	cpa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Salvage value assets rate.

+ References

No definition available.

+ Details

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Namespace Prefix:	cpa_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_AircraftTypeAxis=cpa_BoeingSevenHundredAndThirtySevenSevenHundredAircraftMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: