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Significant Accounting Policies - Schedule of Significant Subsidiaries (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Panama [member] | Copa Airlines [member]
Disclosure of information about unconsolidated subsidiaries [line items]
Ownership interest	99.90%	99.90%
Colombia [member] | Copa Colombia [member]
Disclosure of information about unconsolidated subsidiaries [line items]
Ownership interest	99.90%	99.90%
British Virgin Islands [member] | Oval [member]
Disclosure of information about unconsolidated subsidiaries [line items]
Ownership interest	100.00%	100.00%

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