| r0.c0 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1.1/Number of ultimo reporting year | bzk-dvi-i:NumberOfUltimoReportingYear | xbrli:nonNegativeIntegerItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r0.c1 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1.1/Net rental per month ultimo reporting year | bzk-dvi-i:NetRentalPerMonthUltimoReportingYear | bzk-dvi-types:monetary2Decimals20ItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r0.c2 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1.1/Market value ultimo reporting year | bzk-dvi-i:MarketValueUltimoReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r0.c3 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1.1/WOZ-value reporting year | bzk-dvi-i:WOZValueReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c0 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1/Number of ultimo reporting year | bzk-dvi-i:NumberOfUltimoReportingYear | xbrli:nonNegativeIntegerItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c1 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1/Net rental per month ultimo reporting year | bzk-dvi-i:NetRentalPerMonthUltimoReportingYear | bzk-dvi-types:monetary2Decimals20ItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c2 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1/Market value ultimo reporting year | bzk-dvi-i:MarketValueUltimoReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c3 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1.1/WOZ-value reporting year | bzk-dvi-i:WOZValueReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r2.c0 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1/Number of ultimo reporting year | bzk-dvi-i:NumberOfUltimoReportingYear | xbrli:nonNegativeIntegerItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | N/A |
| r2.c1 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1/Net rental per month ultimo reporting year | bzk-dvi-i:NetRentalPerMonthUltimoReportingYear | bzk-dvi-types:monetary2Decimals20ItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | N/A |
| r2.c2 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1/Market value ultimo reporting year | bzk-dvi-i:MarketValueUltimoReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | N/A |
| r2.c3 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1.1/WOZ-value reporting year | bzk-dvi-i:WOZValueReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember | N/A |
| r3.c0 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1/Number of ultimo reporting year | bzk-dvi-i:NumberOfUltimoReportingYear | xbrli:nonNegativeIntegerItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | N/A | N/A |
| r3.c1 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1/Net rental per month ultimo reporting year | bzk-dvi-i:NetRentalPerMonthUltimoReportingYear | bzk-dvi-types:monetary2Decimals20ItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | N/A | N/A |
| r3.c2 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1/Market value ultimo reporting year | bzk-dvi-i:MarketValueUltimoReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | N/A | N/A |
| r3.c3 | bzk-table_OverviewUnityLevelInExploitationTotalDaebHousingDviTable-y.1/WOZ-value reporting year | bzk-dvi-i:WOZValueReportingYear | nl-types:monetaryNoDecimalsItemType | instant | bzk-dvi-dm:StatementOnTheLevelOfUnityInOperationMember | $BasisOfPreparationParam | N/A | N/A |