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Intangible assets, airport concessions and goodwill - Net: - CGU with a significant amount of goodwill (Details)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Colombia (Airplan)    
Disclosure by geographical areas:    
Discount rate for the value in use method 9.66% 10.46%
Annual average of revenue, operating costs and expense growth rate 5.25% 3.10%
Output passenger growth rate 6.70% 4.50%
Level of the fair value hierarchy of value recoverable from the CGU 3 3
Puerto Rico (Aerostar)    
Disclosure by geographical areas:    
Discount rate for the value in use method 9.60% 10.93%
Annual average of revenue, operating costs and expense growth rate 4.45% 4.14%
Output passenger growth rate 2.50% 2.50%
Level of the fair value hierarchy of value recoverable from the CGU 3 3