| r0.c0 | Interest expenses allocated to investments by the cooperative/Forecast reporting year | bzk-ti-i:CashFlowStatementCorporationInvestmentsInterestExpenditure | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c1 | Interest expenses allocated to investments by the cooperative/First forecast year | bzk-ti-i:CashFlowStatementCorporationInvestmentsInterestExpenditure | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c2 | Interest expenses allocated to investments by the cooperative/Second forecast year | bzk-ti-i:CashFlowStatementCorporationInvestmentsInterestExpenditure | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c3 | Interest expenses allocated to investments by the cooperative/Third forecast year | bzk-ti-i:CashFlowStatementCorporationInvestmentsInterestExpenditure | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c4 | Interest expenses allocated to investments by the cooperative/Fourth forecast year | bzk-ti-i:CashFlowStatementCorporationInvestmentsInterestExpenditure | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r0.c5 | Interest expenses allocated to investments by the cooperative/Fifth forecast year | bzk-ti-i:CashFlowStatementCorporationInvestmentsInterestExpenditure | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c0 | Activated production own business (sales, demolition, new buildings, purchase, accommodation improvement)/Forecast reporting year | bzk-ti-i:CashFlowStatementActivatedProductionOwnBusiness | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c1 | Activated production own business (sales, demolition, new buildings, purchase, accommodation improvement)/First forecast year | bzk-ti-i:CashFlowStatementActivatedProductionOwnBusiness | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c2 | Activated production own business (sales, demolition, new buildings, purchase, accommodation improvement)/Second forecast year | bzk-ti-i:CashFlowStatementActivatedProductionOwnBusiness | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c3 | Activated production own business (sales, demolition, new buildings, purchase, accommodation improvement)/Third forecast year | bzk-ti-i:CashFlowStatementActivatedProductionOwnBusiness | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c4 | Activated production own business (sales, demolition, new buildings, purchase, accommodation improvement)/Fourth forecast year | bzk-ti-i:CashFlowStatementActivatedProductionOwnBusiness | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r1.c5 | Activated production own business (sales, demolition, new buildings, purchase, accommodation improvement)/Fifth forecast year | bzk-ti-i:CashFlowStatementActivatedProductionOwnBusiness | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c0 | Part employee benefits expenses relates to maintenance/Forecast reporting year | bzk-ti-i:CashFlowStatementMaintenanceEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c1 | Part employee benefits expenses relates to maintenance/First forecast year | bzk-ti-i:CashFlowStatementMaintenanceEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c2 | Part employee benefits expenses relates to maintenance/Second forecast year | bzk-ti-i:CashFlowStatementMaintenanceEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c3 | Part employee benefits expenses relates to maintenance/Third forecast year | bzk-ti-i:CashFlowStatementMaintenanceEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c4 | Part employee benefits expenses relates to maintenance/Fourth forecast year | bzk-ti-i:CashFlowStatementMaintenanceEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r2.c5 | Part employee benefits expenses relates to maintenance/Fifth forecast year | bzk-ti-i:CashFlowStatementMaintenanceEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c0 | Other cash flows allocated to maintenance/Forecast reporting year | bzk-ti-i:CashFlowStatementMaintenanceOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c1 | Other cash flows allocated to maintenance/First forecast year | bzk-ti-i:CashFlowStatementMaintenanceOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c2 | Other cash flows allocated to maintenance/Second forecast year | bzk-ti-i:CashFlowStatementMaintenanceOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c3 | Other cash flows allocated to maintenance/Third forecast year | bzk-ti-i:CashFlowStatementMaintenanceOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c4 | Other cash flows allocated to maintenance/Fourth forecast year | bzk-ti-i:CashFlowStatementMaintenanceOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r3.c5 | Other cash flows allocated to maintenance/Fifth forecast year | bzk-ti-i:CashFlowStatementMaintenanceOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c0 | Part employee benefits expenses relates to liveability/Forecast reporting year | bzk-ti-i:CashFlowStatementLiveabilityEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c1 | Part employee benefits expenses relates to liveability/First forecast year | bzk-ti-i:CashFlowStatementLiveabilityEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c2 | Part employee benefits expenses relates to liveability/Second forecast year | bzk-ti-i:CashFlowStatementLiveabilityEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c3 | Part employee benefits expenses relates to liveability/Third forecast year | bzk-ti-i:CashFlowStatementLiveabilityEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c4 | Part employee benefits expenses relates to liveability/Fourth forecast year | bzk-ti-i:CashFlowStatementLiveabilityEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r4.c5 | Part employee benefits expenses relates to liveability/Fifth forecast year | bzk-ti-i:CashFlowStatementLiveabilityEmployeeBenefitsExpenses | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c0 | Other cash flows allocated to liveability/Forecast reporting year | bzk-ti-i:CashFlowStatementLiveabilityOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c1 | Other cash flows allocated to liveability/First forecast year | bzk-ti-i:CashFlowStatementLiveabilityOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c2 | Other cash flows allocated to liveability/Second forecast year | bzk-ti-i:CashFlowStatementLiveabilityOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c3 | Other cash flows allocated to liveability/Third forecast year | bzk-ti-i:CashFlowStatementLiveabilityOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c4 | Other cash flows allocated to liveability/Fourth forecast year | bzk-ti-i:CashFlowStatementLiveabilityOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |
| r5.c5 | Other cash flows allocated to liveability/Fifth forecast year | bzk-ti-i:CashFlowStatementLiveabilityOther | nl-types:monetaryNoDecimalsItemType | duration | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam | $BasisOfPreparationParam | bzk-ti-dm:DAEBActivitiesMember |