| r0.c0 | Number of units/Forecast reporting year | bzk-ww-i:NumberOfUnits | nl-types:nonNegativeInteger20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:NonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c0 | Number of units living space/Forecast reporting year | bzk-ww-i:NumberOfUnitsLivingSpace | nl-types:nonNegativeInteger20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:NonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r2.c0 | Number of units excluding living space/Forecast reporting year | bzk-ww-i:NumberOfUnitsExcludingLivingSpace | nl-types:nonNegativeInteger20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:NonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |