| r0.c0 | Number of sale/Forecast reporting year | bzk-aw-wsw-i:SaleNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r0.c1 | Number of sale/First forecast year | bzk-aw-wsw-i:SaleNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r0.c2 | Number of sale/Second forecast year | bzk-aw-wsw-i:SaleNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r0.c3 | Number of sale/Third forecast year | bzk-aw-wsw-i:SaleNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r0.c4 | Number of sale/Fourth forecast year | bzk-aw-wsw-i:SaleNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r0.c5 | Number of sale/Fifth forecast year | bzk-aw-wsw-i:SaleNumber | xbrli:nonNegativeIntegerItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r1.c0 | Sales income of sale/Forecast reporting year | bzk-aw-wsw-i:SaleSalesIncome | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r1.c1 | Sales income of sale/First forecast year | bzk-aw-wsw-i:SaleSalesIncome | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r1.c2 | Sales income of sale/Second forecast year | bzk-aw-wsw-i:SaleSalesIncome | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r1.c3 | Sales income of sale/Third forecast year | bzk-aw-wsw-i:SaleSalesIncome | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r1.c4 | Sales income of sale/Fourth forecast year | bzk-aw-wsw-i:SaleSalesIncome | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r1.c5 | Sales income of sale/Fifth forecast year | bzk-aw-wsw-i:SaleSalesIncome | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r2.c0 | Sales expenses of sale/Forecast reporting year | bzk-aw-wsw-i:SaleSalesExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r2.c1 | Sales expenses of sale/First forecast year | bzk-aw-wsw-i:SaleSalesExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r2.c2 | Sales expenses of sale/Second forecast year | bzk-aw-wsw-i:SaleSalesExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r2.c3 | Sales expenses of sale/Third forecast year | bzk-aw-wsw-i:SaleSalesExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r2.c4 | Sales expenses of sale/Fourth forecast year | bzk-aw-wsw-i:SaleSalesExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r2.c5 | Sales expenses of sale/Fifth forecast year | bzk-aw-wsw-i:SaleSalesExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r3.c0 | Market value of sale/Forecast reporting year | bzk-aw-wsw-i:SaleMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r3.c1 | Market value of sale/First forecast year | bzk-aw-wsw-i:SaleMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r3.c2 | Market value of sale/Second forecast year | bzk-aw-wsw-i:SaleMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r3.c3 | Market value of sale/Third forecast year | bzk-aw-wsw-i:SaleMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r3.c4 | Market value of sale/Fourth forecast year | bzk-aw-wsw-i:SaleMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r3.c5 | Market value of sale/Fifth forecast year | bzk-aw-wsw-i:SaleMarketValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r4.c0 | Policy value of sale/Forecast reporting year | bzk-aw-wsw-i:SalePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r4.c1 | Policy value of sale/First forecast year | bzk-aw-wsw-i:SalePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r4.c2 | Policy value of sale/Second forecast year | bzk-aw-wsw-i:SalePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r4.c3 | Policy value of sale/Third forecast year | bzk-aw-wsw-i:SalePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r4.c4 | Policy value of sale/Fourth forecast year | bzk-aw-wsw-i:SalePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |
| r4.c5 | Policy value of sale/Fifth forecast year | bzk-aw-wsw-i:SalePolicyValue | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:NonDAEBActivitiesMember |