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| r0.c1 | Share in results of participating interests in group companies/Previous | venj-bw2-i:ShareInResultsParticipatingInterestsInGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Income of non-current receivables and of securities in group companies/Current | venj-bw2-i:IncomeReceivablesNoncurrentSecuritiesGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c1 | Income of non-current receivables and of securities in group companies/Previous | venj-bw2-i:IncomeReceivablesNoncurrentSecuritiesGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Interest income and related income from group companies/Current | venj-bw2-i:InterestIncomeRelatedIncomeGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c1 | Interest income and related income from group companies/Previous | venj-bw2-i:InterestIncomeRelatedIncomeGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c0 | Changes in value of financial assets and of securities from group companies/Current | venj-bw2-i:ChangesValueFinancialAssetsSecuritiesGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c1 | Changes in value of financial assets and of securities from group companies/Previous | venj-bw2-i:ChangesValueFinancialAssetsSecuritiesGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c0 | Interest expenses and related expenses from group companies/Current | venj-bw2-i:InterestExpensesRelatedExpensesGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c1 | Interest expenses and related expenses from group companies/Previous | venj-bw2-i:InterestExpensesRelatedExpensesGroupCompanies | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodPreviousStartDateParam/$FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |