| r0.c0 | Disclosure of investments in land and buildings/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:InvestmentsInLandAndBuildingsDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Disclosure of investments in land and buildings for own use/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:InvestmentsInLandAndBuildingsForOwnUseDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Disclosure of other investments in land and buildings/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:InvestmentsInLandAndBuildingsOtherDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c0 | Disclosure of investments, group companies and participating interests/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:InvestmentsInGroupCompaniesAndParticipatingInterestsDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c0 | Disclosure of investments in group companies/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:InvestmentsInParticipatingInterestsInGroupCompaniesDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r5.c0 | Disclosure of bonds issued by and receivables from group companies/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:BondsIssuedByAndReceivablesFromGroupCompaniesDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r6.c0 | Disclosure of other investments in participating interests/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:InvestmentsInParticipatingInterestsOtherDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r7.c0 | Disclosure of bonds issued by and receivables from shareholders and participating interests/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:BondsIssuedByAndReceivablesFromShareholdersParticipatingInterestsDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r8.c0 | Disclosure of other financial investments/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:FinancialInvestmentsOtherDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r9.c0 | Disclosure of shares, securities with participating rights and other variable yield securities/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:SharesSecuritiesWithParticipatingRightsAndOtherVariableYieldSecuritiesDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r10.c0 | Disclosure of bonds and other fixed-income securities/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:BondsOtherFixedIncomeSecuritiesDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r11.c0 | Disclosure of interests in investment pools/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:InterestsInInvestmentPoolsDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r12.c0 | Disclosure of receivables from mortgage loans/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:ReceivablesFromMortgageLoansDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r13.c0 | Disclosure of receivables from other loans/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:ReceivablesFromOtherLoansDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r14.c0 | Disclosure of deposits at credit institutions/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:DepositsAtCreditInstitutionsDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r15.c0 | Disclosure of other types of other financial investments/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:OtherFinancialInvestmentsOtherDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r16.c0 | Disclosure of deposits at insurers/kvk-table_NotesConsolidatedInvestmentsInsuranceTable-x.1.1.1 | venj-bw2-i:DepositsAtInsurersDisclosure | nl-types:formattedExplanationItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |