| r0.c0 | Number of owned rental units/Forecast reporting year | bzk-aw-wsw-i:NumberOfOwnedRentalUnits | xbrli:nonNegativeIntegerItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c1 | Number of owned rental units/First forecast year | bzk-aw-wsw-i:NumberOfOwnedRentalUnits | xbrli:nonNegativeIntegerItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c2 | Number of owned rental units/Second forecast year | bzk-aw-wsw-i:NumberOfOwnedRentalUnits | xbrli:nonNegativeIntegerItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c3 | Number of owned rental units/Third forecast year | bzk-aw-wsw-i:NumberOfOwnedRentalUnits | xbrli:nonNegativeIntegerItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c4 | Number of owned rental units/Fourth forecast year | bzk-aw-wsw-i:NumberOfOwnedRentalUnits | xbrli:nonNegativeIntegerItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c5 | Number of owned rental units/Fifth forecast year | bzk-aw-wsw-i:NumberOfOwnedRentalUnits | xbrli:nonNegativeIntegerItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c6 | Number of owned rental units/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:NumberOfOwnedRentalUnits | xbrli:nonNegativeIntegerItemType | instant | N/A | N/A | N/A |
| r1.c0 | Discounted value rentals/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c1 | Discounted value rentals/First forecast year | bzk-aw-wsw-i:DiscountedValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c2 | Discounted value rentals/Second forecast year | bzk-aw-wsw-i:DiscountedValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c3 | Discounted value rentals/Third forecast year | bzk-aw-wsw-i:DiscountedValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c4 | Discounted value rentals/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c5 | Discounted value rentals/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c6 | Discounted value rentals/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueRentals | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r2.c0 | Discounted value rent loss/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueRentLoss | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c1 | Discounted value rent loss/First forecast year | bzk-aw-wsw-i:DiscountedValueRentLoss | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c2 | Discounted value rent loss/Second forecast year | bzk-aw-wsw-i:DiscountedValueRentLoss | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c3 | Discounted value rent loss/Third forecast year | bzk-aw-wsw-i:DiscountedValueRentLoss | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c4 | Discounted value rent loss/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueRentLoss | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c5 | Discounted value rent loss/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueRentLoss | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c6 | Discounted value rent loss/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueRentLoss | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r3.c0 | Discounted net value rentals/Forecast reporting year | bzk-aw-wsw-i:DiscountedNetValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c1 | Discounted net value rentals/First forecast year | bzk-aw-wsw-i:DiscountedNetValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c2 | Discounted net value rentals/Second forecast year | bzk-aw-wsw-i:DiscountedNetValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c3 | Discounted net value rentals/Third forecast year | bzk-aw-wsw-i:DiscountedNetValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c4 | Discounted net value rentals/Fourth forecast year | bzk-aw-wsw-i:DiscountedNetValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c5 | Discounted net value rentals/Fifth forecast year | bzk-aw-wsw-i:DiscountedNetValueRentals | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c6 | Discounted net value rentals/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedNetValueRentals | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r4.c0 | Discounted value contributions/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueContributions | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c1 | Discounted value contributions/First forecast year | bzk-aw-wsw-i:DiscountedValueContributions | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c2 | Discounted value contributions/Second forecast year | bzk-aw-wsw-i:DiscountedValueContributions | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c3 | Discounted value contributions/Third forecast year | bzk-aw-wsw-i:DiscountedValueContributions | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c4 | Discounted value contributions/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueContributions | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c5 | Discounted value contributions/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueContributions | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c6 | Discounted value contributions/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueContributions | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r5.c0 | Discounted value income from sales/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueIncomeFromSales | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c1 | Discounted value income from sales/First forecast year | bzk-aw-wsw-i:DiscountedValueIncomeFromSales | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c2 | Discounted value income from sales/Second forecast year | bzk-aw-wsw-i:DiscountedValueIncomeFromSales | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c3 | Discounted value income from sales/Third forecast year | bzk-aw-wsw-i:DiscountedValueIncomeFromSales | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c4 | Discounted value income from sales/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueIncomeFromSales | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c5 | Discounted value income from sales/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueIncomeFromSales | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c6 | Discounted value income from sales/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueIncomeFromSales | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r6.c0 | Discounted value other receipts/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueOtherReceipts | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r6.c1 | Discounted value other receipts/First forecast year | bzk-aw-wsw-i:DiscountedValueOtherReceipts | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r6.c2 | Discounted value other receipts/Second forecast year | bzk-aw-wsw-i:DiscountedValueOtherReceipts | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r6.c3 | Discounted value other receipts/Third forecast year | bzk-aw-wsw-i:DiscountedValueOtherReceipts | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r6.c4 | Discounted value other receipts/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueOtherReceipts | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r6.c5 | Discounted value other receipts/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueOtherReceipts | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r6.c6 | Discounted value other receipts/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueOtherReceipts | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r7.c0 | Discounted value residual value/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueResidualValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r7.c1 | Discounted value residual value/First forecast year | bzk-aw-wsw-i:DiscountedValueResidualValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r7.c2 | Discounted value residual value/Second forecast year | bzk-aw-wsw-i:DiscountedValueResidualValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r7.c3 | Discounted value residual value/Third forecast year | bzk-aw-wsw-i:DiscountedValueResidualValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r7.c4 | Discounted value residual value/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueResidualValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r7.c5 | Discounted value residual value/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueResidualValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r7.c6 | Discounted value residual value/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueResidualValue | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r8.c0 | Discounted value maintenance expenses/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r8.c1 | Discounted value maintenance expenses/First forecast year | bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r8.c2 | Discounted value maintenance expenses/Second forecast year | bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r8.c3 | Discounted value maintenance expenses/Third forecast year | bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r8.c4 | Discounted value maintenance expenses/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r8.c5 | Discounted value maintenance expenses/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r8.c6 | Discounted value maintenance expenses/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r9.c0 | Discounted value other operating-expenses/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r9.c1 | Discounted value other operating-expenses/First forecast year | bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r9.c2 | Discounted value other operating-expenses/Second forecast year | bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r9.c3 | Discounted value other operating-expenses/Third forecast year | bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r9.c4 | Discounted value other operating-expenses/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r9.c5 | Discounted value other operating-expenses/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r9.c6 | Discounted value other operating-expenses/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r10.c0 | Discounted value improvement expenses/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueImprovementExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r10.c1 | Discounted value improvement expenses/First forecast year | bzk-aw-wsw-i:DiscountedValueImprovementExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r10.c2 | Discounted value improvement expenses/Second forecast year | bzk-aw-wsw-i:DiscountedValueImprovementExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r10.c3 | Discounted value improvement expenses/Third forecast year | bzk-aw-wsw-i:DiscountedValueImprovementExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r10.c4 | Discounted value improvement expenses/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueImprovementExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r10.c5 | Discounted value improvement expenses/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueImprovementExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r10.c6 | Discounted value improvement expenses/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueImprovementExpenses | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r11.c0 | Discounted value other expenses/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueOtherExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r11.c1 | Discounted value other expenses/First forecast year | bzk-aw-wsw-i:DiscountedValueOtherExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r11.c2 | Discounted value other expenses/Second forecast year | bzk-aw-wsw-i:DiscountedValueOtherExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r11.c3 | Discounted value other expenses/Third forecast year | bzk-aw-wsw-i:DiscountedValueOtherExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r11.c4 | Discounted value other expenses/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueOtherExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r11.c5 | Discounted value other expenses/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueOtherExpenses | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r11.c6 | Discounted value other expenses/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueOtherExpenses | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r12.c0 | Discounted value landlord levy/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueLandlordLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r12.c1 | Discounted value landlord levy/First forecast year | bzk-aw-wsw-i:DiscountedValueLandlordLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r12.c2 | Discounted value landlord levy/Second forecast year | bzk-aw-wsw-i:DiscountedValueLandlordLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r12.c3 | Discounted value landlord levy/Third forecast year | bzk-aw-wsw-i:DiscountedValueLandlordLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r12.c4 | Discounted value landlord levy/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueLandlordLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r12.c5 | Discounted value landlord levy/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueLandlordLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r12.c6 | Discounted value landlord levy/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueLandlordLevy | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r13.c0 | Discounted value remediation levy/Forecast reporting year | bzk-aw-wsw-i:DiscountedValueRemediationLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r13.c1 | Discounted value remediation levy/First forecast year | bzk-aw-wsw-i:DiscountedValueRemediationLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r13.c2 | Discounted value remediation levy/Second forecast year | bzk-aw-wsw-i:DiscountedValueRemediationLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r13.c3 | Discounted value remediation levy/Third forecast year | bzk-aw-wsw-i:DiscountedValueRemediationLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r13.c4 | Discounted value remediation levy/Fourth forecast year | bzk-aw-wsw-i:DiscountedValueRemediationLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r13.c5 | Discounted value remediation levy/Fifth forecast year | bzk-aw-wsw-i:DiscountedValueRemediationLevy | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r13.c6 | Discounted value remediation levy/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:DiscountedValueRemediationLevy | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r14.c0 | Business value/Forecast reporting year | bzk-aw-wsw-i:BusinessValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r14.c1 | Business value/First forecast year | bzk-aw-wsw-i:BusinessValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r14.c2 | Business value/Second forecast year | bzk-aw-wsw-i:BusinessValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r14.c3 | Business value/Third forecast year | bzk-aw-wsw-i:BusinessValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r14.c4 | Business value/Fourth forecast year | bzk-aw-wsw-i:BusinessValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r14.c5 | Business value/Fifth forecast year | bzk-aw-wsw-i:BusinessValue | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r14.c6 | Business value/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:BusinessValue | nl-types:monetaryNoDecimalsItemType | instant | N/A | N/A | N/A |
| r15.c0 | Average remaining economic life/Forecast reporting year | bzk-aw-wsw-i:AverageRemainingEconomicLife | xbrli:integerItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r15.c1 | Average remaining economic life/First forecast year | bzk-aw-wsw-i:AverageRemainingEconomicLife | xbrli:integerItemType | instant | $FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r15.c2 | Average remaining economic life/Second forecast year | bzk-aw-wsw-i:AverageRemainingEconomicLife | xbrli:integerItemType | instant | $FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r15.c3 | Average remaining economic life/Third forecast year | bzk-aw-wsw-i:AverageRemainingEconomicLife | xbrli:integerItemType | instant | $FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r15.c4 | Average remaining economic life/Fourth forecast year | bzk-aw-wsw-i:AverageRemainingEconomicLife | xbrli:integerItemType | instant | $FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r15.c5 | Average remaining economic life/Fifth forecast year | bzk-aw-wsw-i:AverageRemainingEconomicLife | xbrli:integerItemType | instant | $FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r15.c6 | Average remaining economic life/bzk-table_SpecificationBusinessValueHousingUnitsDaebHousingDpiTable-x2.1 | bzk-aw-wsw-i:AverageRemainingEconomicLife | xbrli:integerItemType | instant | N/A | N/A | N/A |