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| | concept | bzk-aw-wsw-i:NumberOfOtherUnitsIncludingIntramural | y | | period | $FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:NumberOfOtherUnitsIncludingIntramural | y | | period | $FinancialReportingPeriodFirstPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:NumberOfOtherUnitsIncludingIntramural | y | | period | $FinancialReportingPeriodSecondPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:NumberOfOtherUnitsIncludingIntramural | y | | period | $FinancialReportingPeriodThirdPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:NumberOfOtherUnitsIncludingIntramural | y | | period | $FinancialReportingPeriodFourthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:NumberOfOtherUnitsIncludingIntramural | y | | period | $FinancialReportingPeriodFifthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
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| | concept | bzk-aw-wsw-i:MarketValueOtherUnits | y | | period | $FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:MarketValueOtherUnits | y | | period | $FinancialReportingPeriodFirstPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:MarketValueOtherUnits | y | | period | $FinancialReportingPeriodSecondPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:MarketValueOtherUnits | y | | period | $FinancialReportingPeriodThirdPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:MarketValueOtherUnits | y | | period | $FinancialReportingPeriodFourthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:MarketValueOtherUnits | y | | period | $FinancialReportingPeriodFifthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
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| | concept | bzk-aw-wsw-i:TotalMarketValue | y | | period | $FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalMarketValue | y | | period | $FinancialReportingPeriodFirstPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalMarketValue | y | | period | $FinancialReportingPeriodSecondPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalMarketValue | y | | period | $FinancialReportingPeriodThirdPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalMarketValue | y | | period | $FinancialReportingPeriodFourthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalMarketValue | y | | period | $FinancialReportingPeriodFifthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
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| | concept | bzk-aw-wsw-i:TotalPolicyValue | y | | period | $FinancialReportingPeriodCurrentEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalPolicyValue | y | | period | $FinancialReportingPeriodFirstPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalPolicyValue | y | | period | $FinancialReportingPeriodSecondPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalPolicyValue | y | | period | $FinancialReportingPeriodThirdPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalPolicyValue | y | | period | $FinancialReportingPeriodFourthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
| | concept | bzk-aw-wsw-i:TotalPolicyValue | y | | period | $FinancialReportingPeriodFifthPeriodEndDateParam | x | | venj-bw2-dim:BasisOfPreparationAxis | $BasisOfPreparationParam | x | | venj-bw2-dim:FinancialStatementsTypeAxis | bzk-ti-dm:NonDAEBActivitiesMember | x |
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