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Composition of GACN (Details)
Dec. 31, 2019
item
Disclosure of transactions between related parties [line items]  
Number of subsidiaries 24
Airports  
Disclosure of transactions between related parties [line items]  
Number of subsidiaries 13
Hotels  
Disclosure of transactions between related parties [line items]  
Number of subsidiaries 2
Services  
Disclosure of transactions between related parties [line items]  
Number of subsidiaries 9