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Significant Accounting Judgments, Estimates and Assumptions - Additional Information (Detail)	Dec. 31, 2017
Disclosure of voluntary change in accounting policy [abstract]
Salvage value assets rate	15.00%

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- Definition

Salvage value assets rate.

+ References

No definition available.

+ Details

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

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- References

No definition available.

+ Details

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