| r0.c0 | Number of transactions from non-DAEB to DAEB number/Forecast reporting year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r0.c1 | Number of transactions from non-DAEB to DAEB number/First forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r0.c2 | Number of transactions from non-DAEB to DAEB number/Second forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r0.c3 | Number of transactions from non-DAEB to DAEB number/Third forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r0.c4 | Number of transactions from non-DAEB to DAEB number/Fourth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r0.c5 | Number of transactions from non-DAEB to DAEB number/Fifth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r1.c0 | Purchase price of transactions from DAEB to non-DAEB/Forecast reporting year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r1.c1 | Purchase price of transactions from DAEB to non-DAEB/First forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r1.c2 | Purchase price of transactions from DAEB to non-DAEB/Second forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r1.c3 | Purchase price of transactions from DAEB to non-DAEB/Third forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r1.c4 | Purchase price of transactions from DAEB to non-DAEB/Fourth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r1.c5 | Purchase price of transactions from DAEB to non-DAEB/Fifth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r2.c0 | Market value of transactions from non-DAEB to DAEB/Forecast reporting year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r2.c1 | Market value of transactions from non-DAEB to DAEB/First forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r2.c2 | Market value of transactions from non-DAEB to DAEB/Second forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r2.c3 | Market value of transactions from non-DAEB to DAEB/Third forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r2.c4 | Market value of transactions from non-DAEB to DAEB/Fourth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r2.c5 | Market value of transactions from non-DAEB to DAEB/Fifth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r3.c0 | Policy value of transactions from non-DAEB to DAEB/Forecast reporting year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r3.c1 | Policy value of transactions from non-DAEB to DAEB/First forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r3.c2 | Policy value of transactions from non-DAEB to DAEB/Second forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r3.c3 | Policy value of transactions from non-DAEB to DAEB/Third forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r3.c4 | Policy value of transactions from non-DAEB to DAEB/Fourth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |
| r3.c5 | Policy value of transactions from non-DAEB to DAEB/Fifth forecast year | bzk-aw-wsw-i:TransactionsFromNonDAEBToDAEBPolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:SeparateMember |