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Other long-term liabilities - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Disclosure of non-financial liabilities [Line Items]
Amount in escrow account	$ 8.0
Provision for adjustment	14.5
Provision for maintenance	3.0	$ 4.5
Trust fund	$ 3.1

X

- Definition

Amount in escrow deposits.

+ References

No definition available.

+ Details

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

X

- Definition

Disclosure of non-financial liabilities [Line Items]

+ References

No definition available.

+ Details

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

X

- Definition

Provision for adjustment.

+ References

No definition available.

+ Details

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

X

- Definition

Provision for maintenance.

+ References

No definition available.

+ Details

Name:	cpa_ProvisionForMaintenance
Namespace Prefix:	cpa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Trust fund.

+ References

No definition available.

+ Details

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