| r0.c0 | Balance sheet before or after appropriation of results/Current | jenv-bw2-i:BalanceSheetBeforeAfterAppropriationResults | jenv-codes:profitAppropriationItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r0.c1 | Balance sheet before or after appropriation of results/Previous | jenv-bw2-i:BalanceSheetBeforeAfterAppropriationResults | jenv-codes:profitAppropriationItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r1.c0 | Investments on behalf of pension fund/Current | rj-i:InvestmentsOnBehalfOfPensionFund | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r1.c1 | Investments on behalf of pension fund/Previous | rj-i:InvestmentsOnBehalfOfPensionFund | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r2.c0 | Investments on behalf of participants/Current | rj-i:InvestmentsOnBehalfOfParticipants | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r2.c1 | Investments on behalf of participants/Previous | rj-i:InvestmentsOnBehalfOfParticipants | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r3.c0 | Reinsurance part technical provisions/Current | rj-i:ReinsurancePartTechnicalProvisions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r3.c1 | Reinsurance part technical provisions/Previous | rj-i:ReinsurancePartTechnicalProvisions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r4.c0 | Receivables from insurance policies not immediately due from current accounts/Current | rj-i:ReceivablesFromInsurancePoliciesNotImmediatelyDueFromCurrentAccounts | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r4.c1 | Receivables from insurance policies not immediately due from current accounts/Previous | rj-i:ReceivablesFromInsurancePoliciesNotImmediatelyDueFromCurrentAccounts | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r5.c0 | Investments net-pension arrangements/Current | rj-i:InvestmentsNetPensionArrangements | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r5.c1 | Investments net-pension arrangements/Previous | rj-i:InvestmentsNetPensionArrangements | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r6.c0 | Investments in participating interests/Current | jenv-bw2-i:InvestmentsInParticipatingInterests | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r6.c1 | Investments in participating interests/Previous | jenv-bw2-i:InvestmentsInParticipatingInterests | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r7.c0 | Intangible assets/Current | jenv-bw2-i:IntangibleAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r7.c1 | Intangible assets/Previous | jenv-bw2-i:IntangibleAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r8.c0 | Property, plant and equipment/Current | jenv-bw2-i:PropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r8.c1 | Property, plant and equipment/Previous | jenv-bw2-i:PropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r9.c0 | Receivables and prepayments/Current | rj-i:ReceivablesAndPrepayments | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r9.c1 | Receivables and prepayments/Previous | rj-i:ReceivablesAndPrepayments | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r10.c0 | Other assets/Current | jenv-bw2-i:AssetsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r10.c1 | Other assets/Previous | jenv-bw2-i:AssetsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r11.c0 | Assets/Current | jenv-bw2-i:Assets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r11.c1 | Assets/Previous | jenv-bw2-i:Assets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r12.c0 | Assets/Current | kvk-abstr:AssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r12.c1 | Assets/Previous | kvk-abstr:AssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r13.c0 | Foundation capital/Current | rj-i:FoundationCapital | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r13.c1 | Foundation capital/Previous | rj-i:FoundationCapital | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r14.c0 | Legal and statutory reserves/Current | jenv-bw2-i:LegalStatutoryReserves | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r14.c1 | Legal and statutory reserves/Previous | jenv-bw2-i:LegalStatutoryReserves | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r15.c0 | Designated reserves/Current | rj-i:DesignatedReserves | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r15.c1 | Designated reserves/Previous | rj-i:DesignatedReserves | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r16.c0 | Financial instruments that would be accounted for as liabilities on the basis of economic reality, but recognized as equity based on the legal form/Current | rj-i:FinancialInstrumentsLegalFormClassifiedAsEquity | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r16.c1 | Financial instruments that would be accounted for as liabilities on the basis of economic reality, but recognized as equity based on the legal form/Previous | rj-i:FinancialInstrumentsLegalFormClassifiedAsEquity | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r17.c0 | Other reserves/Current | jenv-bw2-i:ReservesOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r17.c1 | Other reserves/Previous | jenv-bw2-i:ReservesOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r18.c0 | Foundation capital and reserves/Current | rj-i:FoundationCapitalAndReserves | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r18.c1 | Foundation capital and reserves/Previous | rj-i:FoundationCapitalAndReserves | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r19.c0 | Foundation capital and reserves/Current | kvk-abstr:FoundationCapitalAndReservesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r19.c1 | Foundation capital and reserves/Previous | kvk-abstr:FoundationCapitalAndReservesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r20.c0 | Current subordinated loans/Current | rj-i:SubordinatedLoans | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r20.c1 | Current subordinated loans/Previous | rj-i:SubordinatedLoans | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r21.c0 | Technical provisions/Current | jenv-bw2-i:TechnicalProvisions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r21.c1 | Technical provisions/Previous | jenv-bw2-i:TechnicalProvisions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r22.c0 | Provision for pension obligations on behalf of participants/Current | rj-i:ProvisionPensionObligationsOnBehalfOfParticipants | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r22.c1 | Provision for pension obligations on behalf of participants/Previous | rj-i:ProvisionPensionObligationsOnBehalfOfParticipants | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r23.c0 | Provision for pension obligations net-pension arrangements/Current | rj-i:ProvisionPensionObligationsNetPensionArrangements | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r23.c1 | Provision for pension obligations net-pension arrangements/Previous | rj-i:ProvisionPensionObligationsNetPensionArrangements | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r24.c0 | Other provisions/Current | jenv-bw2-i:ProvisionsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r24.c1 | Other provisions/Previous | jenv-bw2-i:ProvisionsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r25.c0 | Non-current liabilities/Current | jenv-bw2-i:LiabilitiesNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r25.c1 | Non-current liabilities/Previous | jenv-bw2-i:LiabilitiesNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r26.c0 | Payables relating to VPL arrangements received not yet utilised/Current | rj-i:PayablesVPLArrangementsReceivedNotYetUtilised | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r26.c1 | Payables relating to VPL arrangements received not yet utilised/Previous | rj-i:PayablesVPLArrangementsReceivedNotYetUtilised | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r27.c0 | Other liabilities/Current | rj-i:LiabilitiesOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r27.c1 | Other liabilities/Previous | rj-i:LiabilitiesOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r28.c0 | Equity and liabilities/Current | jenv-bw2-i:EquityAndLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r28.c1 | Equity and liabilities/Previous | jenv-bw2-i:EquityAndLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r29.c0 | Equity and liabilities/Current | kvk-abstr:EquityAndLiabilitiesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |
| r29.c1 | Equity and liabilities/Previous | kvk-abstr:EquityAndLiabilitiesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:SeparateMember |