Nature of business operations (Details)	Dec. 31, 2019 item
Nature of business operations
Number of airports under a concession granted	13

The number of airports under a concession granted by the Mexican Government through the Ministry of Communications and Transportation.

No definition available.

Name:	omab_NumberOfAirportsUnderConcessionGranted
Namespace Prefix:	omab_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant