| r0.c0 | Number of purchase/Forecast reporting year | bzk-aw-wsw-i:PurchaseNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c1 | Number of purchase/First forecast year | bzk-aw-wsw-i:PurchaseNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c2 | Number of purchase/Second forecast year | bzk-aw-wsw-i:PurchaseNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c3 | Number of purchase/Third forecast year | bzk-aw-wsw-i:PurchaseNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c4 | Number of purchase/Fourth forecast year | bzk-aw-wsw-i:PurchaseNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c5 | Number of purchase/Fifth forecast year | bzk-aw-wsw-i:PurchaseNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c0 | Purchase expenses of purchase/Forecast reporting year | bzk-aw-wsw-i:PurchasePurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c1 | Purchase expenses of purchase/First forecast year | bzk-aw-wsw-i:PurchasePurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c2 | Purchase expenses of purchase/Second forecast year | bzk-aw-wsw-i:PurchasePurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c3 | Purchase expenses of purchase/Third forecast year | bzk-aw-wsw-i:PurchasePurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c4 | Purchase expenses of purchase/Fourth forecast year | bzk-aw-wsw-i:PurchasePurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c5 | Purchase expenses of purchase/Fifth forecast year | bzk-aw-wsw-i:PurchasePurchasePrice | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c0 | Market value of purchase/Forecast reporting year | bzk-aw-wsw-i:PurchaseMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c1 | Market value of purchase/First forecast year | bzk-aw-wsw-i:PurchaseMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c2 | Market value of purchase/Second forecast year | bzk-aw-wsw-i:PurchaseMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c3 | Market value of purchase/Third forecast year | bzk-aw-wsw-i:PurchaseMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c4 | Market value of purchase/Fourth forecast year | bzk-aw-wsw-i:PurchaseMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c5 | Market value of purchase/Fifth forecast year | bzk-aw-wsw-i:PurchaseMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c0 | Policy value of purchase/Forecast reporting year | bzk-aw-wsw-i:PurchasePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c1 | Policy value of purchase/First forecast year | bzk-aw-wsw-i:PurchasePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c2 | Policy value of purchase/Second forecast year | bzk-aw-wsw-i:PurchasePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c3 | Policy value of purchase/Third forecast year | bzk-aw-wsw-i:PurchasePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c4 | Policy value of purchase/Fourth forecast year | bzk-aw-wsw-i:PurchasePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c5 | Policy value of purchase/Fifth forecast year | bzk-aw-wsw-i:PurchasePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |