| r0.c0 | Are the rental units in administration or are they managed?/Current | bzk-dvi-i:RentalUnitsInAdministrationOrManaged | nl-codes:yesNoItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:NonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c0 | Number of rental units managed by others/Current | bzk-dvi-i:NumberOfRentalUnitsManagedByOthers | xbrli:nonNegativeIntegerItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:NonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r2.c0 | Number of rental units managed for others/Current | bzk-dvi-i:NumberOfRentalUnitsManagedForOthers | xbrli:nonNegativeIntegerItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:NonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |