| r0.c0 | Gross technical provisions for insurance where investments are for risk of policy holders and annual life funds/Current | venj-bw2-i:TechnicalProvisionsForInsuranceWhereInvestmentsAreForRiskOfPolicyHoldersAndAnnualLifeFundsGross | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r0.c1 | Gross technical provisions for insurance where investments are for risk of policy holders and annual life funds/Previous | venj-bw2-i:TechnicalProvisionsForInsuranceWhereInvestmentsAreForRiskOfPolicyHoldersAndAnnualLifeFundsGross | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Reinsured part of technical provisions for insurance where investments are for risk of policy holders and annual life funds/Current | venj-bw2-i:TechnicalProvisionsForInsuranceWhereInvestmentsAreForRiskOfPolicyHoldersAndAnnualLifeFundsReinsuredPart | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c1 | Reinsured part of technical provisions for insurance where investments are for risk of policy holders and annual life funds/Previous | venj-bw2-i:TechnicalProvisionsForInsuranceWhereInvestmentsAreForRiskOfPolicyHoldersAndAnnualLifeFundsReinsuredPart | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Technical provisions for insurance where investments are for risk of policy holders and annual life funds/Current | venj-bw2-i:TechnicalProvisionsForInsuranceWhereInvestmentsAreForRiskOfPolicyHoldersAndAnnualLifeFunds | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c1 | Technical provisions for insurance where investments are for risk of policy holders and annual life funds/Previous | venj-bw2-i:TechnicalProvisionsForInsuranceWhereInvestmentsAreForRiskOfPolicyHoldersAndAnnualLifeFunds | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |