| r0.c0 | Rental received (from operating activities)/Forecast reporting year | bzk-ww-i:RentalIncomeClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r0.c1 | Rental received (from operating activities)/First forecast year | bzk-ww-i:RentalIncomeClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r0.c2 | Rental received (from operating activities)/Second forecast year | bzk-ww-i:RentalIncomeClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r0.c3 | Rental received (from operating activities)/Third forecast year | bzk-ww-i:RentalIncomeClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r0.c4 | Rental received (from operating activities)/Fourth forecast year | bzk-ww-i:RentalIncomeClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r0.c5 | Rental received (from operating activities)/Fifth forecast year | bzk-ww-i:RentalIncomeClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r1.c0 | Reimbursements/Forecast reporting year | bzk-ww-i:Reimbursements | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r1.c1 | Reimbursements/First forecast year | bzk-ww-i:Reimbursements | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r1.c2 | Reimbursements/Second forecast year | bzk-ww-i:Reimbursements | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r1.c3 | Reimbursements/Third forecast year | bzk-ww-i:Reimbursements | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r1.c4 | Reimbursements/Fourth forecast year | bzk-ww-i:Reimbursements | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r1.c5 | Reimbursements/Fifth forecast year | bzk-ww-i:Reimbursements | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r2.c0 | Receipts government/Forecast reporting year | bzk-ww-i:ReceiptsGovernment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r2.c1 | Receipts government/First forecast year | bzk-ww-i:ReceiptsGovernment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r2.c2 | Receipts government/Second forecast year | bzk-ww-i:ReceiptsGovernment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r2.c3 | Receipts government/Third forecast year | bzk-ww-i:ReceiptsGovernment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r2.c4 | Receipts government/Fourth forecast year | bzk-ww-i:ReceiptsGovernment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r2.c5 | Receipts government/Fifth forecast year | bzk-ww-i:ReceiptsGovernment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r3.c0 | Other receipts companies/Forecast reporting year | bzk-ww-i:ReceiptsCompaniesOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r3.c1 | Other receipts companies/First forecast year | bzk-ww-i:ReceiptsCompaniesOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r3.c2 | Other receipts companies/Second forecast year | bzk-ww-i:ReceiptsCompaniesOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r3.c3 | Other receipts companies/Third forecast year | bzk-ww-i:ReceiptsCompaniesOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r3.c4 | Other receipts companies/Fourth forecast year | bzk-ww-i:ReceiptsCompaniesOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r3.c5 | Other receipts companies/Fifth forecast year | bzk-ww-i:ReceiptsCompaniesOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r4.c0 | Interest received (from operating activities)/Forecast reporting year | rj-i:InterestReceivedClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r4.c1 | Interest received (from operating activities)/First forecast year | rj-i:InterestReceivedClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r4.c2 | Interest received (from operating activities)/Second forecast year | rj-i:InterestReceivedClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r4.c3 | Interest received (from operating activities)/Third forecast year | rj-i:InterestReceivedClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r4.c4 | Interest received (from operating activities)/Fourth forecast year | rj-i:InterestReceivedClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r4.c5 | Interest received (from operating activities)/Fifth forecast year | rj-i:InterestReceivedClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r5.c0 | Cash inflows/Forecast reporting year | bzk-ww-i:BalanceCashInflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r5.c1 | Cash inflows/First forecast year | bzk-ww-i:BalanceCashInflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r5.c2 | Cash inflows/Second forecast year | bzk-ww-i:BalanceCashInflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r5.c3 | Cash inflows/Third forecast year | bzk-ww-i:BalanceCashInflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r5.c4 | Cash inflows/Fourth forecast year | bzk-ww-i:BalanceCashInflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r5.c5 | Cash inflows/Fifth forecast year | bzk-ww-i:BalanceCashInflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r6.c0 | Ground lease expenses (from operating activities)/Forecast reporting year | bzk-ww-i:GroundLeaseExpensesClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r6.c1 | Ground lease expenses (from operating activities)/First forecast year | bzk-ww-i:GroundLeaseExpensesClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r6.c2 | Ground lease expenses (from operating activities)/Second forecast year | bzk-ww-i:GroundLeaseExpensesClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r6.c3 | Ground lease expenses (from operating activities)/Third forecast year | bzk-ww-i:GroundLeaseExpensesClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r6.c4 | Ground lease expenses (from operating activities)/Fourth forecast year | bzk-ww-i:GroundLeaseExpensesClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r6.c5 | Ground lease expenses (from operating activities)/Fifth forecast year | bzk-ww-i:GroundLeaseExpensesClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r7.c0 | Payments to employees/Forecast reporting year | rj-i:PaymentsEmployees | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r7.c1 | Payments to employees/First forecast year | rj-i:PaymentsEmployees | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r7.c2 | Payments to employees/Second forecast year | rj-i:PaymentsEmployees | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r7.c3 | Payments to employees/Third forecast year | rj-i:PaymentsEmployees | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r7.c4 | Payments to employees/Fourth forecast year | rj-i:PaymentsEmployees | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r7.c5 | Payments to employees/Fifth forecast year | rj-i:PaymentsEmployees | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r8.c0 | Maintenance expenses (from operating activities)/Forecast reporting year | bzk-ww-i:MaintenanceExpensesClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r8.c1 | Maintenance expenses (from operating activities)/First forecast year | bzk-ww-i:MaintenanceExpensesClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r8.c2 | Maintenance expenses (from operating activities)/Second forecast year | bzk-ww-i:MaintenanceExpensesClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r8.c3 | Maintenance expenses (from operating activities)/Third forecast year | bzk-ww-i:MaintenanceExpensesClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r8.c4 | Maintenance expenses (from operating activities)/Fourth forecast year | bzk-ww-i:MaintenanceExpensesClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r8.c5 | Maintenance expenses (from operating activities)/Fifth forecast year | bzk-ww-i:MaintenanceExpensesClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r9.c0 | Other operating expenses (from operating activities)/Forecast reporting year | bzk-ww-i:OperatingExpensesOtherClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r9.c1 | Other operating expenses (from operating activities)/First forecast year | bzk-ww-i:OperatingExpensesOtherClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r9.c2 | Other operating expenses (from operating activities)/Second forecast year | bzk-ww-i:OperatingExpensesOtherClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r9.c3 | Other operating expenses (from operating activities)/Third forecast year | bzk-ww-i:OperatingExpensesOtherClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r9.c4 | Other operating expenses (from operating activities)/Fourth forecast year | bzk-ww-i:OperatingExpensesOtherClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r9.c5 | Other operating expenses (from operating activities)/Fifth forecast year | bzk-ww-i:OperatingExpensesOtherClassifiedAsOperatingExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r10.c0 | Interest paid (from operating activities)/Forecast reporting year | rj-i:InterestPaidClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r10.c1 | Interest paid (from operating activities)/First forecast year | rj-i:InterestPaidClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r10.c2 | Interest paid (from operating activities)/Second forecast year | rj-i:InterestPaidClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r10.c3 | Interest paid (from operating activities)/Third forecast year | rj-i:InterestPaidClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r10.c4 | Interest paid (from operating activities)/Fourth forecast year | rj-i:InterestPaidClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r10.c5 | Interest paid (from operating activities)/Fifth forecast year | rj-i:InterestPaidClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r11.c0 | Sector specific levy independent of results/Forecast reporting year | bzk-ww-i:SectorSpecificLevyIndependentOfResult | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r11.c1 | Sector specific levy independent of results/First forecast year | bzk-ww-i:SectorSpecificLevyIndependentOfResult | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r11.c2 | Sector specific levy independent of results/Second forecast year | bzk-ww-i:SectorSpecificLevyIndependentOfResult | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r11.c3 | Sector specific levy independent of results/Third forecast year | bzk-ww-i:SectorSpecificLevyIndependentOfResult | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r11.c4 | Sector specific levy independent of results/Fourth forecast year | bzk-ww-i:SectorSpecificLevyIndependentOfResult | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r11.c5 | Sector specific levy independent of results/Fifth forecast year | bzk-ww-i:SectorSpecificLevyIndependentOfResult | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r12.c0 | Lessor levy/Forecast reporting year | bzk-ww-i:LessorLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r12.c1 | Lessor levy/First forecast year | bzk-ww-i:LessorLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r12.c2 | Lessor levy/Second forecast year | bzk-ww-i:LessorLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r12.c3 | Lessor levy/Third forecast year | bzk-ww-i:LessorLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r12.c4 | Lessor levy/Fourth forecast year | bzk-ww-i:LessorLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r12.c5 | Lessor levy/Fifth forecast year | bzk-ww-i:LessorLevy | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r13.c0 | Liveability expenses external expenses non-investment related/Forecast reporting year | bzk-ww-i:LiveabilityExpensesExternalExpensesNoninvestmentRelated | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r13.c1 | Liveability expenses external expenses non-investment related/First forecast year | bzk-ww-i:LiveabilityExpensesExternalExpensesNoninvestmentRelated | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r13.c2 | Liveability expenses external expenses non-investment related/Second forecast year | bzk-ww-i:LiveabilityExpensesExternalExpensesNoninvestmentRelated | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r13.c3 | Liveability expenses external expenses non-investment related/Third forecast year | bzk-ww-i:LiveabilityExpensesExternalExpensesNoninvestmentRelated | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r13.c4 | Liveability expenses external expenses non-investment related/Fourth forecast year | bzk-ww-i:LiveabilityExpensesExternalExpensesNoninvestmentRelated | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r13.c5 | Liveability expenses external expenses non-investment related/Fifth forecast year | bzk-ww-i:LiveabilityExpensesExternalExpensesNoninvestmentRelated | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r14.c0 | Corporate tax/Forecast reporting year | bzk-ww-i:CorporateTaxClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r14.c1 | Corporate tax/First forecast year | bzk-ww-i:CorporateTaxClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r14.c2 | Corporate tax/Second forecast year | bzk-ww-i:CorporateTaxClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r14.c3 | Corporate tax/Third forecast year | bzk-ww-i:CorporateTaxClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r14.c4 | Corporate tax/Fourth forecast year | bzk-ww-i:CorporateTaxClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r14.c5 | Corporate tax/Fifth forecast year | bzk-ww-i:CorporateTaxClassifiedAsOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r15.c0 | Cash outflows/Forecast reporting year | bzk-ww-i:BalanceCashOutflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r15.c1 | Cash outflows/First forecast year | bzk-ww-i:BalanceCashOutflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r15.c2 | Cash outflows/Second forecast year | bzk-ww-i:BalanceCashOutflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r15.c3 | Cash outflows/Third forecast year | bzk-ww-i:BalanceCashOutflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r15.c4 | Cash outflows/Fourth forecast year | bzk-ww-i:BalanceCashOutflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r15.c5 | Cash outflows/Fifth forecast year | bzk-ww-i:BalanceCashOutflows | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r16.c0 | Cash flows from (used in) operating activities/Forecast reporting year | rj-i:CashFlowOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r16.c1 | Cash flows from (used in) operating activities/First forecast year | rj-i:CashFlowOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r16.c2 | Cash flows from (used in) operating activities/Second forecast year | rj-i:CashFlowOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r16.c3 | Cash flows from (used in) operating activities/Third forecast year | rj-i:CashFlowOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r16.c4 | Cash flows from (used in) operating activities/Fourth forecast year | rj-i:CashFlowOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r16.c5 | Cash flows from (used in) operating activities/Fifth forecast year | rj-i:CashFlowOperatingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r17.c0 | Sales income from rent/Forecast reporting year | bzk-ww-i:SalesIncomeRentOfHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r17.c1 | Sales income from rent/First forecast year | bzk-ww-i:SalesIncomeRentOfHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r17.c2 | Sales income from rent/Second forecast year | bzk-ww-i:SalesIncomeRentOfHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r17.c3 | Sales income from rent/Third forecast year | bzk-ww-i:SalesIncomeRentOfHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r17.c4 | Sales income from rent/Fourth forecast year | bzk-ww-i:SalesIncomeRentOfHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r17.c5 | Sales income from rent/Fifth forecast year | bzk-ww-i:SalesIncomeRentOfHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r18.c0 | Sales income of housing units (VOV) after purchase in dPi period/Forecast reporting year | bzk-ww-i:SalesIncomeHousingUnitsVOVAfterPurchaseInDPIPeriod | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r18.c1 | Sales income of housing units (VOV) after purchase in dPi period/First forecast year | bzk-ww-i:SalesIncomeHousingUnitsVOVAfterPurchaseInDPIPeriod | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r18.c2 | Sales income of housing units (VOV) after purchase in dPi period/Second forecast year | bzk-ww-i:SalesIncomeHousingUnitsVOVAfterPurchaseInDPIPeriod | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r18.c3 | Sales income of housing units (VOV) after purchase in dPi period/Third forecast year | bzk-ww-i:SalesIncomeHousingUnitsVOVAfterPurchaseInDPIPeriod | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r18.c4 | Sales income of housing units (VOV) after purchase in dPi period/Fourth forecast year | bzk-ww-i:SalesIncomeHousingUnitsVOVAfterPurchaseInDPIPeriod | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r18.c5 | Sales income of housing units (VOV) after purchase in dPi period/Fifth forecast year | bzk-ww-i:SalesIncomeHousingUnitsVOVAfterPurchaseInDPIPeriod | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r19.c0 | Sales income land/Forecast reporting year | bzk-ww-i:SalesIncomeLand | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r19.c1 | Sales income land/First forecast year | bzk-ww-i:SalesIncomeLand | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r19.c2 | Sales income land/Second forecast year | bzk-ww-i:SalesIncomeLand | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r19.c3 | Sales income land/Third forecast year | bzk-ww-i:SalesIncomeLand | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r19.c4 | Sales income land/Fourth forecast year | bzk-ww-i:SalesIncomeLand | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r19.c5 | Sales income land/Fifth forecast year | bzk-ww-i:SalesIncomeLand | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r20.c0 | Divestment and investment proceeds other/Forecast reporting year | bzk-ww-i:DivestmentInvestmentProceedsOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r20.c1 | Divestment and investment proceeds other/First forecast year | bzk-ww-i:DivestmentInvestmentProceedsOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r20.c2 | Divestment and investment proceeds other/Second forecast year | bzk-ww-i:DivestmentInvestmentProceedsOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r20.c3 | Divestment and investment proceeds other/Third forecast year | bzk-ww-i:DivestmentInvestmentProceedsOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r20.c4 | Divestment and investment proceeds other/Fourth forecast year | bzk-ww-i:DivestmentInvestmentProceedsOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r20.c5 | Divestment and investment proceeds other/Fifth forecast year | bzk-ww-i:DivestmentInvestmentProceedsOther | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r21.c0 | Proceeds from sales of property, plant and equipment/Forecast reporting year | rj-i:ProceedsSalesPropertyPlantAndEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r21.c1 | Proceeds from sales of property, plant and equipment/First forecast year | rj-i:ProceedsSalesPropertyPlantAndEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r21.c2 | Proceeds from sales of property, plant and equipment/Second forecast year | rj-i:ProceedsSalesPropertyPlantAndEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r21.c3 | Proceeds from sales of property, plant and equipment/Third forecast year | rj-i:ProceedsSalesPropertyPlantAndEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r21.c4 | Proceeds from sales of property, plant and equipment/Fourth forecast year | rj-i:ProceedsSalesPropertyPlantAndEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r21.c5 | Proceeds from sales of property, plant and equipment/Fifth forecast year | rj-i:ProceedsSalesPropertyPlantAndEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r22.c0 | New buildings rent/Forecast reporting year | bzk-ww-i:PaymentsNewBuildingsRentHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r22.c1 | New buildings rent/First forecast year | bzk-ww-i:PaymentsNewBuildingsRentHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r22.c2 | New buildings rent/Second forecast year | bzk-ww-i:PaymentsNewBuildingsRentHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r22.c3 | New buildings rent/Third forecast year | bzk-ww-i:PaymentsNewBuildingsRentHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r22.c4 | New buildings rent/Fourth forecast year | bzk-ww-i:PaymentsNewBuildingsRentHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r22.c5 | New buildings rent/Fifth forecast year | bzk-ww-i:PaymentsNewBuildingsRentHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r23.c0 | Accommodation improvements/Forecast reporting year | bzk-ww-i:PaymentsAccommodationImprovementsHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r23.c1 | Accommodation improvements/First forecast year | bzk-ww-i:PaymentsAccommodationImprovementsHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r23.c2 | Accommodation improvements/Second forecast year | bzk-ww-i:PaymentsAccommodationImprovementsHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r23.c3 | Accommodation improvements/Third forecast year | bzk-ww-i:PaymentsAccommodationImprovementsHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r23.c4 | Accommodation improvements/Fourth forecast year | bzk-ww-i:PaymentsAccommodationImprovementsHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r23.c5 | Accommodation improvements/Fifth forecast year | bzk-ww-i:PaymentsAccommodationImprovementsHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r24.c0 | Purchase/Forecast reporting year | bzk-ww-i:PurchaseHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r24.c1 | Purchase/First forecast year | bzk-ww-i:PurchaseHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r24.c2 | Purchase/Second forecast year | bzk-ww-i:PurchaseHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r24.c3 | Purchase/Third forecast year | bzk-ww-i:PurchaseHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r24.c4 | Purchase/Fourth forecast year | bzk-ww-i:PurchaseHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r24.c5 | Purchase/Fifth forecast year | bzk-ww-i:PurchaseHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r25.c0 | Purchase housing units (VOV) for resale/Forecast reporting year | bzk-ww-i:PurchaseHousingUnitsVOVForResale | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r25.c1 | Purchase housing units (VOV) for resale/First forecast year | bzk-ww-i:PurchaseHousingUnitsVOVForResale | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r25.c2 | Purchase housing units (VOV) for resale/Second forecast year | bzk-ww-i:PurchaseHousingUnitsVOVForResale | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r25.c3 | Purchase housing units (VOV) for resale/Third forecast year | bzk-ww-i:PurchaseHousingUnitsVOVForResale | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r25.c4 | Purchase housing units (VOV) for resale/Fourth forecast year | bzk-ww-i:PurchaseHousingUnitsVOVForResale | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r25.c5 | Purchase housing units (VOV) for resale/Fifth forecast year | bzk-ww-i:PurchaseHousingUnitsVOVForResale | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r26.c0 | Demolition expenses/Forecast reporting year | bzk-ww-i:DemolitionExpensesHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r26.c1 | Demolition expenses/First forecast year | bzk-ww-i:DemolitionExpensesHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r26.c2 | Demolition expenses/Second forecast year | bzk-ww-i:DemolitionExpensesHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r26.c3 | Demolition expenses/Third forecast year | bzk-ww-i:DemolitionExpensesHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r26.c4 | Demolition expenses/Fourth forecast year | bzk-ww-i:DemolitionExpensesHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r26.c5 | Demolition expenses/Fifth forecast year | bzk-ww-i:DemolitionExpensesHousingAndNonHousingUnits | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r27.c0 | Other investments from investing activities/Forecast reporting year | bzk-ww-i:InvestmentOtherFromInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r27.c1 | Other investments from investing activities/First forecast year | bzk-ww-i:InvestmentOtherFromInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r27.c2 | Other investments from investing activities/Second forecast year | bzk-ww-i:InvestmentOtherFromInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r27.c3 | Other investments from investing activities/Third forecast year | bzk-ww-i:InvestmentOtherFromInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r27.c4 | Other investments from investing activities/Fourth forecast year | bzk-ww-i:InvestmentOtherFromInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r27.c5 | Other investments from investing activities/Fifth forecast year | bzk-ww-i:InvestmentOtherFromInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r28.c0 | Purchase of property, plant and equipment/Forecast reporting year | rj-i:PurchasePropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r28.c1 | Purchase of property, plant and equipment/First forecast year | rj-i:PurchasePropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r28.c2 | Purchase of property, plant and equipment/Second forecast year | rj-i:PurchasePropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r28.c3 | Purchase of property, plant and equipment/Third forecast year | rj-i:PurchasePropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r28.c4 | Purchase of property, plant and equipment/Fourth forecast year | rj-i:PurchasePropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r28.c5 | Purchase of property, plant and equipment/Fifth forecast year | rj-i:PurchasePropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r29.c0 | Incoming and outgoing cashflow property plant equipment/Forecast reporting year | bzk-ww-i:CashFlowPPEActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r29.c1 | Incoming and outgoing cashflow property plant equipment/First forecast year | bzk-ww-i:CashFlowPPEActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r29.c2 | Incoming and outgoing cashflow property plant equipment/Second forecast year | bzk-ww-i:CashFlowPPEActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r29.c3 | Incoming and outgoing cashflow property plant equipment/Third forecast year | bzk-ww-i:CashFlowPPEActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r29.c4 | Incoming and outgoing cashflow property plant equipment/Fourth forecast year | bzk-ww-i:CashFlowPPEActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r29.c5 | Incoming and outgoing cashflow property plant equipment/Fifth forecast year | bzk-ww-i:CashFlowPPEActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r30.c0 | Income compounds/Forecast reporting year | bzk-ww-i:IncomeCompounds | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r30.c1 | Income compounds/First forecast year | bzk-ww-i:IncomeCompounds | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r30.c2 | Income compounds/Second forecast year | bzk-ww-i:IncomeCompounds | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r30.c3 | Income compounds/Third forecast year | bzk-ww-i:IncomeCompounds | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r30.c4 | Income compounds/Fourth forecast year | bzk-ww-i:IncomeCompounds | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r30.c5 | Income compounds/Fifth forecast year | bzk-ww-i:IncomeCompounds | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r31.c0 | Income other/Forecast reporting year | bzk-ww-i:IncomeOtherClassifiedAsInvestingProperties | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r31.c1 | Income other/First forecast year | bzk-ww-i:IncomeOtherClassifiedAsInvestingProperties | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r31.c2 | Income other/Second forecast year | bzk-ww-i:IncomeOtherClassifiedAsInvestingProperties | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r31.c3 | Income other/Third forecast year | bzk-ww-i:IncomeOtherClassifiedAsInvestingProperties | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r31.c4 | Income other/Fourth forecast year | bzk-ww-i:IncomeOtherClassifiedAsInvestingProperties | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r31.c5 | Income other/Fifth forecast year | bzk-ww-i:IncomeOtherClassifiedAsInvestingProperties | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r32.c0 | Payments compound/Forecast reporting year | bzk-ww-i:PaymentsCompoundClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r32.c1 | Payments compound/First forecast year | bzk-ww-i:PaymentsCompoundClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r32.c2 | Payments compound/Second forecast year | bzk-ww-i:PaymentsCompoundClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r32.c3 | Payments compound/Third forecast year | bzk-ww-i:PaymentsCompoundClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r32.c4 | Payments compound/Fourth forecast year | bzk-ww-i:PaymentsCompoundClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r32.c5 | Payments compound/Fifth forecast year | bzk-ww-i:PaymentsCompoundClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r33.c0 | Payments other/Forecast reporting year | bzk-ww-i:PaymentsOtherClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r33.c1 | Payments other/First forecast year | bzk-ww-i:PaymentsOtherClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r33.c2 | Payments other/Second forecast year | bzk-ww-i:PaymentsOtherClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r33.c3 | Payments other/Third forecast year | bzk-ww-i:PaymentsOtherClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r33.c4 | Payments other/Fourth forecast year | bzk-ww-i:PaymentsOtherClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r33.c5 | Payments other/Fifth forecast year | bzk-ww-i:PaymentsOtherClassifiedAsInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r34.c0 | Balance incoming and outgoing cashflow financial fixed assets/Forecast reporting year | bzk-ww-i:BalanceFinancialFixedAssets | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r34.c1 | Balance incoming and outgoing cashflow financial fixed assets/First forecast year | bzk-ww-i:BalanceFinancialFixedAssets | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r34.c2 | Balance incoming and outgoing cashflow financial fixed assets/Second forecast year | bzk-ww-i:BalanceFinancialFixedAssets | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r34.c3 | Balance incoming and outgoing cashflow financial fixed assets/Third forecast year | bzk-ww-i:BalanceFinancialFixedAssets | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r34.c4 | Balance incoming and outgoing cashflow financial fixed assets/Fourth forecast year | bzk-ww-i:BalanceFinancialFixedAssets | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r34.c5 | Balance incoming and outgoing cashflow financial fixed assets/Fifth forecast year | bzk-ww-i:BalanceFinancialFixedAssets | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r35.c0 | Cash flows from (used in) investing activities/Forecast reporting year | rj-i:CashFlowInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r35.c1 | Cash flows from (used in) investing activities/First forecast year | rj-i:CashFlowInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r35.c2 | Cash flows from (used in) investing activities/Second forecast year | rj-i:CashFlowInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r35.c3 | Cash flows from (used in) investing activities/Third forecast year | rj-i:CashFlowInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r35.c4 | Cash flows from (used in) investing activities/Fourth forecast year | rj-i:CashFlowInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r35.c5 | Cash flows from (used in) investing activities/Fifth forecast year | rj-i:CashFlowInvestingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r36.c0 | New loans to be secured/Forecast reporting year | bzk-ww-i:NewLoansToBeSecured | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r36.c1 | New loans to be secured/First forecast year | bzk-ww-i:NewLoansToBeSecured | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r36.c2 | New loans to be secured/Second forecast year | bzk-ww-i:NewLoansToBeSecured | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r36.c3 | New loans to be secured/Third forecast year | bzk-ww-i:NewLoansToBeSecured | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r36.c4 | New loans to be secured/Fourth forecast year | bzk-ww-i:NewLoansToBeSecured | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r36.c5 | New loans to be secured/Fifth forecast year | bzk-ww-i:NewLoansToBeSecured | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r37.c0 | New non secured loans/Forecast reporting year | bzk-ww-i:NewNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r37.c1 | New non secured loans/First forecast year | bzk-ww-i:NewNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r37.c2 | New non secured loans/Second forecast year | bzk-ww-i:NewNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r37.c3 | New non secured loans/Third forecast year | bzk-ww-i:NewNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r37.c4 | New non secured loans/Fourth forecast year | bzk-ww-i:NewNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r37.c5 | New non secured loans/Fifth forecast year | bzk-ww-i:NewNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r38.c0 | Redemption secured loans/Forecast reporting year | bzk-ww-i:RedemptionSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r38.c1 | Redemption secured loans/First forecast year | bzk-ww-i:RedemptionSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r38.c2 | Redemption secured loans/Second forecast year | bzk-ww-i:RedemptionSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r38.c3 | Redemption secured loans/Third forecast year | bzk-ww-i:RedemptionSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r38.c4 | Redemption secured loans/Fourth forecast year | bzk-ww-i:RedemptionSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r38.c5 | Redemption secured loans/Fifth forecast year | bzk-ww-i:RedemptionSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r39.c0 | Redemption secured loans/Forecast reporting year | bzk-ww-i:RedemptionNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r39.c1 | Redemption secured loans/First forecast year | bzk-ww-i:RedemptionNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r39.c2 | Redemption secured loans/Second forecast year | bzk-ww-i:RedemptionNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r39.c3 | Redemption secured loans/Third forecast year | bzk-ww-i:RedemptionNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r39.c4 | Redemption secured loans/Fourth forecast year | bzk-ww-i:RedemptionNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r39.c5 | Redemption secured loans/Fifth forecast year | bzk-ww-i:RedemptionNonSecuredLoans | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r40.c0 | Cash flows from (used in) financing activities/Forecast reporting year | rj-i:CashFlowFinancingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r40.c1 | Cash flows from (used in) financing activities/First forecast year | rj-i:CashFlowFinancingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r40.c2 | Cash flows from (used in) financing activities/Second forecast year | rj-i:CashFlowFinancingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r40.c3 | Cash flows from (used in) financing activities/Third forecast year | rj-i:CashFlowFinancingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r40.c4 | Cash flows from (used in) financing activities/Fourth forecast year | rj-i:CashFlowFinancingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r40.c5 | Cash flows from (used in) financing activities/Fifth forecast year | rj-i:CashFlowFinancingActivities | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r41.c0 | Increase (decrease) in cash and cash equivalents/Forecast reporting year | rj-i:IncreaseDecreaseCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r41.c1 | Increase (decrease) in cash and cash equivalents/First forecast year | rj-i:IncreaseDecreaseCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r41.c2 | Increase (decrease) in cash and cash equivalents/Second forecast year | rj-i:IncreaseDecreaseCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r41.c3 | Increase (decrease) in cash and cash equivalents/Third forecast year | rj-i:IncreaseDecreaseCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r41.c4 | Increase (decrease) in cash and cash equivalents/Fourth forecast year | rj-i:IncreaseDecreaseCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r41.c5 | Increase (decrease) in cash and cash equivalents/Fifth forecast year | rj-i:IncreaseDecreaseCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r42.c0 | Changes in short-term loans cash and cash equivalents/Forecast reporting year | bzk-ww-i:ChangesShortTermCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r42.c1 | Changes in short-term loans cash and cash equivalents/First forecast year | bzk-ww-i:ChangesShortTermCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r42.c2 | Changes in short-term loans cash and cash equivalents/Second forecast year | bzk-ww-i:ChangesShortTermCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r42.c3 | Changes in short-term loans cash and cash equivalents/Third forecast year | bzk-ww-i:ChangesShortTermCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r42.c4 | Changes in short-term loans cash and cash equivalents/Fourth forecast year | bzk-ww-i:ChangesShortTermCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r42.c5 | Changes in short-term loans cash and cash equivalents/Fifth forecast year | bzk-ww-i:ChangesShortTermCashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r43.c0 | Cash and cash equivalents (cash flow)/Forecast reporting year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r43.c1 | Cash and cash equivalents (cash flow)/First forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r43.c2 | Cash and cash equivalents (cash flow)/Second forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r43.c3 | Cash and cash equivalents (cash flow)/Third forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r43.c4 | Cash and cash equivalents (cash flow)/Fourth forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r43.c5 | Cash and cash equivalents (cash flow)/Fifth forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r44.c0 | Cash and cash equivalents (cash flow)/Forecast reporting year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r44.c1 | Cash and cash equivalents (cash flow)/First forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r44.c2 | Cash and cash equivalents (cash flow)/Second forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r44.c3 | Cash and cash equivalents (cash flow)/Third forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r44.c4 | Cash and cash equivalents (cash flow)/Fourth forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |
| r44.c5 | Cash and cash equivalents (cash flow)/Fifth forecast year | rj-i:CashAndCashEquivalentsCashFlow | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:DAEBActivitiesMember |