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Prepaid expenses - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Prepayments [Abstract]
Tax advance of VAT and withholdings taxes	$ 9.9	$ 11.1
Tax credits	$ 2.3	$ 8.2

X

- Definition

Prepayments

+ References

No definition available.

+ Details

Name:	cpa_PrepaymentsAbstract
Namespace Prefix:	cpa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tax advance of VAT and withholdings taxes.

+ References

No definition available.

+ Details

Name:	cpa_TaxAdvanceOfVATAndWithholdingsTaxes
Namespace Prefix:	cpa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Tax credits.

+ References

No definition available.

+ Details

Name:	cpa_TaxCredits
Namespace Prefix:	cpa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration