| r0.c0 | Allocations/Current | bzk-ww-i:Allocations | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r1.c0 | Paid interest allocated to investments by the corporation/Current | bzk-ww-i:CashFlowStatementCorporationInvestmentsInterestExpenditure | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r2.c0 | Activated production own business (sales, demolition, new buildings, purchase, accommodation improvement)/Current | bzk-ww-i:CashFlowStatementActivatedProductionOwnBusiness | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r3.c0 | Part of payments to employees and other cash flows related to maintenance/Current | bzk-ww-i:CashFlowStatementMaintenanceEmployeeBenefitsExpensesOtherCashFlows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r4.c0 | Part of payments to employees and other cash flows related to liveability/Current | bzk-ww-i:CashFlowStatementLiveabilityEmployeeBenefitsExpensesOtherCashFlows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |