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| | concept | venj-bw2-i:IntangibleAssetsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ImpairmentIntangibleAssetsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:ConstructionClaimsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:GoodwillPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:IntangibleAssetsOtherPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PropertyPlantEquipmentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ImpairmentPropertyPlantEquipmentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:SocialRealEstateInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:CommercialRealEstateInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:RealEstateSoldSubjectTermsConditionsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:RealEstateInDevelopmentForOwnExploitationQualifiedAsPropertyPlantEquipmentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:RealEstateAndMovablePropertyUsedForExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:RealEstateInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:HousingFacilitiesInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:CommercialAndSocialRealEstateInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ParkingFacilitiesInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:IntramuralRealEstateInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:RealEstateOtherInExploitationPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PropertyPlantEquipmentOtherPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:FinancialAssetsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:InvestmentsInParticipatingInterestsInGroupCompaniesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ReceivablesGroupCompaniesNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:InvestmentsInParticipatingInterestsOtherPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ReceivablesShareholdersParticipatingInterestsNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:DeferredTaxAssetsNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:LoansGrantedPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:SecuritiesOtherNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:ReceivablesBWSSubsidiesNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ReceivablesOtherNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:AssetsNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ImpairmentAssetsNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:InventoriesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:RealEstateForSalePolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:RealEstateInDevelopmentForSalePolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:InventoriesOtherPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ConstructionContractsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ReceivablesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:RentalReceivablesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:GovernmentReceivablesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ReceivablesGroupCompaniesCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ReceivablesShareholdersParticipatingInterestsCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:DeferredTaxAssetsCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:PensionReceivablesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:TaxReceivablesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ReceivablesOtherCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:AccruedIncomePolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:SecuritiesCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:CashAndCashEquivalentsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:AssetsCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:EquityGroupPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:NoncontrollingInterestPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:EquityPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:EqualisationAccountPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ProvisionsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:ProvisionUnprofitableInvestmentsAndRestructuringPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:DeferredTaxLiabilitiesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ProvisionPensionObligationsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ProvisionTaxLiabilitiesPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ProvisionPensionObligationsValuationMethodsDescription | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ProvisionPensionObligationsActuarialAssumptionsDescription | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ProvisionPensionObligationsDescription | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:WarrantyProvisionPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:RestructuringProvisionPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:ProvisionParticipatingInterestsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:ProvisionsOtherPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:LiabilitiesNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:PayablesGovernmentNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesCreditInstitutionsNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesGroupCompaniesNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesShareholdersParticipatingInterestsNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | rj-i:LiabilitiesFromRealEstateSoldSubjectTermsConditionsPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesOtherNoncurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:LiabilitiesCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | bzk-ti-i:PayablesGovernmentCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesCreditInstitutionsCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:TradePayablesCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesGroupCompaniesCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesShareholdersParticipatingInterestsCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:TaxesSocialSecurityContributionsPayableCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PensionPayablesCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:PayablesOtherCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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| | concept | venj-bw2-i:AccrualsAndDeferredIncomeCurrentPolicy | y | | period | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:ConsolidatedMember | x |
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