| r0.c0 | Current convertible borrowings/Current | venj-bw2-i:ConvertibleBorrowingsCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r0.c1 | Current convertible borrowings/Previous | venj-bw2-i:ConvertibleBorrowingsCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Current other debentures and private loans/Current | venj-bw2-i:DebenturesOtherPrivateLoansCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c1 | Current other debentures and private loans/Previous | venj-bw2-i:DebenturesOtherPrivateLoansCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Current payables to credit institutions/Current | venj-bw2-i:PayablesCreditInstitutionsCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c1 | Current payables to credit institutions/Previous | venj-bw2-i:PayablesCreditInstitutionsCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c0 | Current payables to group companies/Current | venj-bw2-i:PayablesGroupCompaniesCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c1 | Current payables to group companies/Previous | venj-bw2-i:PayablesGroupCompaniesCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c0 | Repayment obligations of non-current borrowings/Current | venj-bw2-i:RepaymentObligationsOfNoncurrentBorrowings | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c1 | Repayment obligations of non-current borrowings/Previous | venj-bw2-i:RepaymentObligationsOfNoncurrentBorrowings | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r5.c0 | Construction contracts (liabilities)/Current | rj-i:ConstructionContractsLiabilities | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r5.c1 | Construction contracts (liabilities)/Previous | rj-i:ConstructionContractsLiabilities | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r6.c0 | Current other payables/Current | venj-bw2-i:PayablesOtherCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r6.c1 | Current other payables/Previous | venj-bw2-i:PayablesOtherCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r7.c0 | Current accruals and deferred income/Current | venj-bw2-i:AccrualsAndDeferredIncomeCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r7.c1 | Current accruals and deferred income/Previous | venj-bw2-i:AccrualsAndDeferredIncomeCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r8.c0 | Current liabilities/Current | venj-bw2-i:LiabilitiesCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r8.c1 | Current liabilities/Previous | venj-bw2-i:LiabilitiesCurrent | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |