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bzk-table_TotalSpecificationBusinessValueHousingUnitsConsolidatedHousingDpiTable - 3.4.4 B - Total business value: Consolidated [table]

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Forecast reporting year

First forecast year

Second forecast year

Third forecast year

Fourth forecast year

Fifth forecast year

Number of owned rental units

concept	bzk-aw-wsw-i:NumberOfOwnedRentalUnits	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:NumberOfOwnedRentalUnits	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:NumberOfOwnedRentalUnits	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:NumberOfOwnedRentalUnits	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:NumberOfOwnedRentalUnits	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:NumberOfOwnedRentalUnits	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value rentals

concept	bzk-aw-wsw-i:DiscountedValueRentals	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentals	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentals	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentals	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentals	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentals	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value rent loss

concept	bzk-aw-wsw-i:DiscountedValueRentLoss	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentLoss	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentLoss	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentLoss	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentLoss	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRentLoss	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted net value rentals

concept	bzk-aw-wsw-i:DiscountedNetValueRentals	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedNetValueRentals	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedNetValueRentals	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedNetValueRentals	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedNetValueRentals	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedNetValueRentals	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value contributions

concept	bzk-aw-wsw-i:DiscountedValueContributions	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueContributions	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueContributions	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueContributions	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueContributions	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueContributions	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value income from sales

concept	bzk-aw-wsw-i:DiscountedValueIncomeFromSales	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueIncomeFromSales	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueIncomeFromSales	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueIncomeFromSales	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueIncomeFromSales	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueIncomeFromSales	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value other receipts

concept	bzk-aw-wsw-i:DiscountedValueOtherReceipts	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherReceipts	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherReceipts	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherReceipts	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherReceipts	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherReceipts	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value residual value

concept	bzk-aw-wsw-i:DiscountedValueResidualValue	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueResidualValue	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueResidualValue	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueResidualValue	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueResidualValue	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueResidualValue	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value maintenance expenses

concept	bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueMaintenanceExpenses	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value other operating-expenses

concept	bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherOperatingExpenses	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value improvement expenses

concept	bzk-aw-wsw-i:DiscountedValueImprovementExpenses	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueImprovementExpenses	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueImprovementExpenses	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueImprovementExpenses	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueImprovementExpenses	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueImprovementExpenses	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value other expenses

concept	bzk-aw-wsw-i:DiscountedValueOtherExpenses	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherExpenses	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherExpenses	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherExpenses	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherExpenses	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueOtherExpenses	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value landlord levy

concept	bzk-aw-wsw-i:DiscountedValueLandlordLevy	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueLandlordLevy	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueLandlordLevy	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueLandlordLevy	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueLandlordLevy	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueLandlordLevy	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Discounted value remediation levy

concept	bzk-aw-wsw-i:DiscountedValueRemediationLevy	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRemediationLevy	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRemediationLevy	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRemediationLevy	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRemediationLevy	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:DiscountedValueRemediationLevy	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Business value

concept	bzk-aw-wsw-i:BusinessValue	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:BusinessValue	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:BusinessValue	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:BusinessValue	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:BusinessValue	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:BusinessValue	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Average remaining economic life DAEB

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeDaeb	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeDaeb	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeDaeb	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeDaeb	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeDaeb	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeDaeb	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Average remaining economic life non deab

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeNonDeab	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeNonDeab	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeNonDeab	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeNonDeab	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeNonDeab	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeNonDeab	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Compound average remaining economic life

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeCompound	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeCompound	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeCompound	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeCompound	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeCompound	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLifeCompound	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

Average remaining economic life

concept	bzk-aw-wsw-i:AverageRemainingEconomicLife	y
period	$FinancialReportingPeriodCurrentEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLife	y
period	$FinancialReportingPeriodFirstPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLife	y
period	$FinancialReportingPeriodSecondPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLife	y
period	$FinancialReportingPeriodThirdPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLife	y
period	$FinancialReportingPeriodFourthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x

concept	bzk-aw-wsw-i:AverageRemainingEconomicLife	y
period	$FinancialReportingPeriodFifthPeriodEndDateParam	x
venj-bw2-dim:BasisOfPreparationAxis	$BasisOfPreparationParam	x
venj-bw2-dim:FinancialStatementsTypeAxis	venj-bw2-dm:ConsolidatedMember	x