| r0.c0 | Disclosure of other financial investments/kvk-table_NotesConsolidatedFinancialInvestmentsOtherInvestmentFirmTable-x.1.1.1 | venj-bw2-i:FinancialInvestmentsOtherDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Disclosure of shares, securities with participating rights and other variable yield securities/kvk-table_NotesConsolidatedFinancialInvestmentsOtherInvestmentFirmTable-x.1.1.1 | venj-bw2-i:SharesSecuritiesWithParticipatingRightsAndOtherVariableYieldSecuritiesDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Disclosure of bonds and other fixed-income securities/kvk-table_NotesConsolidatedFinancialInvestmentsOtherInvestmentFirmTable-x.1.1.1 | venj-bw2-i:BondsOtherFixedIncomeSecuritiesDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c0 | Disclosure of receivables from mortgage loans/kvk-table_NotesConsolidatedFinancialInvestmentsOtherInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ReceivablesFromMortgageLoansDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c0 | Disclosure of receivables from other loans/kvk-table_NotesConsolidatedFinancialInvestmentsOtherInvestmentFirmTable-x.1.1.1 | venj-bw2-i:ReceivablesFromOtherLoansDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r5.c0 | Disclosure of deposits at credit institutions/kvk-table_NotesConsolidatedFinancialInvestmentsOtherInvestmentFirmTable-x.1.1.1 | venj-bw2-i:DepositsAtCreditInstitutionsDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r6.c0 | Disclosure of other types of other financial investments/kvk-table_NotesConsolidatedFinancialInvestmentsOtherInvestmentFirmTable-x.1.1.1 | venj-bw2-i:OtherFinancialInvestmentsOtherDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |