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Material accounting policies - Schedule of Significant Subsidiaries (Detail)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Panama | Copa Airlines    
Disclosure of information about unconsolidated subsidiaries [line items]    
Ownership interest 99.90% 99.90%
Panama | LNA    
Disclosure of information about unconsolidated subsidiaries [line items]    
Ownership interest 100.00% 100.00%
Colombia | AeroRepública    
Disclosure of information about unconsolidated subsidiaries [line items]    
Ownership interest 99.90% 99.90%
British Virgin Islands | Oval    
Disclosure of information about unconsolidated subsidiaries [line items]    
Ownership interest 100.00% 100.00%