Income taxes - Dividend tax (Details)	12 Months Ended
Dec. 31, 2020
Income taxes
Maximum additional income taxes dividends may be subject to (as a percent)	10.00%

The maximum additional income taxes individuals residing in Mexico and residents abroad may be subject to on dividends paid from profits generated from January 1, 2014.

No definition available.

Name:	omab_MaximumAdditionalIncomeTaxesMexicanResidentsMayBeSubjectToOnDividendsFromProfitsGeneratedAfter1January2014
Namespace Prefix:	omab_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration