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Segment Reporting - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017 Segment
Disclosure of operating segments [abstract]
Number of operating segment	1

X

- Definition

Number of operating segments.

+ References

No definition available.

+ Details

Name:	cpa_NumberOfOperatingSegments1
Namespace Prefix:	cpa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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