| r0.c0 | Accounting principles for determining the result/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:AccountingPrinciplesForDeterminingTheResult | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Policy of income from investments/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:IncomeFromInvestmentsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Policy of income from investments in participating interests in group companies/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:IncomeFromInvestmentsInParticipatingInterestsInGroupCompaniesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c0 | Policy of income from investments in land and buildings/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:IncomeFromInvestmentsInLandAndBuildingsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c0 | Policy of income from investments in other investments/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:IncomeFromInvestmentsInInvestmentsOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r5.c0 | Policy of realised changes in value of investments/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:RealisedChangesInValueOfInvestmentsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r6.c0 | Policy of realised changes in value of investments in other participating interests/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:RealisedChangesInValueOfInvestmentsInParticipatingInterestsOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r7.c0 | Policy of realised changes in value of investments in land and buildings/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:RealisedChangesInValueOfInvestmentsInLandAndBuildingsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r8.c0 | Policy of realised changes in value of investments in other investments/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:RealisedChangesInValueOfInvestmentsInInvestmentsOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r9.c0 | Policy of realised changes in value of investments in group companies/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:RealisedChangesInValueOfInvestmentsInGroupCompaniesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r10.c0 | Policy of unrealised changes in value of investments/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:UnrealisedChangesInValueOfInvestmentsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r11.c0 | Policy of unrealised changes in value of investments in other participating interests/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:UnrealisedChangesInValueOfInvestmentsInParticipatingInterestsOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r12.c0 | Policy of unrealised changes in value of investments other investments/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:UnrealisedChangesInValueOfInvestmentsInOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r13.c0 | Policy of unrealised changes in value of investments in land and buildings/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:UnrealisedChangesInValueOfInvestmentsInLandAndBuildingsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r14.c0 | Policy of unrealised changes in value of investments in group companies/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:UnrealisedChangesInValueOfInvestmentsInGroupCompaniesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r15.c0 | Policy of other operating income/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:OperatingIncomeOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r16.c0 | Policy of operating income/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:OperatingIncomePolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r17.c0 | Policy of expenses relating to investment management/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ExpensesRelatedToInvestmentManagementPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r18.c0 | Policy of general and administrative expenses/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:GeneralAdministrativeExpensesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r19.c0 | Policy of publicity expenses/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:PublicityExpensesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r20.c0 | Policy of management fees/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:ManagementFeesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r21.c0 | Policy of accommodation costs/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:AccommodationCostsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r22.c0 | Policy of equipment and furnishing expenses/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:EquipmentFurnishingExpensesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r23.c0 | Policy of performance fees/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:PerformanceFeesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r24.c0 | Policy of other management expenses/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:ManagementExpensesOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r25.c0 | Policy of custodian fees/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:CustodianFeesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r26.c0 | Policy of wages and salaries/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:WagesSalariesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r27.c0 | Policy of social security contributions/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:SocialSecurityContributionsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r28.c0 | Applied policy of pension costs/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:PensionCostsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r29.c0 | Policy of other expenses of employee benefits/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:EmployeeBenefitsExpensesOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r30.c0 | Policy of expenses of employee benefits/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:EmployeeBenefitsExpensesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r31.c0 | Policy of costs of outsourced work relating to the administration of the investment entity or custody of the assets of the investment entity/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:CostsOutsourcedWorkAdministrationCustodyAssetsInvestmentEntityPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r32.c0 | Policy of depreciation of investments in real estate/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:DepreciationOfInvestmentsInRealEstatePolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r33.c0 | Policy of depreciation of other property, plant and equipment and amortisation of intangible assets/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:DepreciationOtherPropertyPlantEquipmentAmortisationIntangibleAssetsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r34.c0 | Policy of impairment of current assets/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ImpairmentCurrentAssetsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r35.c0 | Policy of changes in value of financial assets and of securities/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ChangesValueFinancialAssetsSecuritiesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r36.c0 | Policy of other operating expenses/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:OperatingExpensesOtherPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r37.c0 | Policy of result before tax/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ResultBeforeTaxPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r38.c0 | Policy of income tax expense/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:IncomeTaxExpensePolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r39.c0 | Policy of operating expenses/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:OperatingExpensesPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r40.c0 | Policy of share in results of participating interests/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ShareInResultsParticipatingInterestsPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r41.c0 | Policy of result after tax/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ResultAfterTaxPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r42.c0 | Policy of result attributable to non-controlling interest/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ResultAttributableNoncontrollingInterestPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r43.c0 | Policy of net result after tax/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:NetResultAfterTaxPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r44.c0 | Policy of changes in reserves due to foreign currency translation/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ChangesInReservesDueToForeignCurrencyTranslationPolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r45.c0 | Policy of earnings per share/kvk-table_NotesConsolidatedAccountingPrinciplesResultInvestmentFirmTable-x.1.1.1 | rj-i:EarningsPerSharePolicy | nl-types:string100000ItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |