| r0.c0 | Number of sale units to future residents/Forecast reporting year | bzk-ww-i:SaleToFutureResidentsNumber | bzk-ww-types:nonNegative1DecimalItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r0.c1 | Number of sale units to future residents/First forecast year | bzk-ww-i:SaleToFutureResidentsNumber | bzk-ww-types:nonNegative1DecimalItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r0.c2 | Number of sale units to future residents/Second forecast year | bzk-ww-i:SaleToFutureResidentsNumber | bzk-ww-types:nonNegative1DecimalItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r0.c3 | Number of sale units to future residents/Third forecast year | bzk-ww-i:SaleToFutureResidentsNumber | bzk-ww-types:nonNegative1DecimalItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r0.c4 | Number of sale units to future residents/Fourth forecast year | bzk-ww-i:SaleToFutureResidentsNumber | bzk-ww-types:nonNegative1DecimalItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r0.c5 | Number of sale units to future residents/Fifth forecast year | bzk-ww-i:SaleToFutureResidentsNumber | bzk-ww-types:nonNegative1DecimalItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |
| r1.c0 | Sales income of sale to future residents/Forecast reporting year | bzk-ww-i:SaleToFutureResidentsSalesIncome | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r1.c1 | Sales income of sale to future residents/First forecast year | bzk-ww-i:SaleToFutureResidentsSalesIncome | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r1.c2 | Sales income of sale to future residents/Second forecast year | bzk-ww-i:SaleToFutureResidentsSalesIncome | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r1.c3 | Sales income of sale to future residents/Third forecast year | bzk-ww-i:SaleToFutureResidentsSalesIncome | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r1.c4 | Sales income of sale to future residents/Fourth forecast year | bzk-ww-i:SaleToFutureResidentsSalesIncome | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r1.c5 | Sales income of sale to future residents/Fifth forecast year | bzk-ww-i:SaleToFutureResidentsSalesIncome | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |
| r2.c0 | Sales expenses of sale to future residents/Forecast reporting year | bzk-ww-i:SaleToFutureResidentsSalesExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r2.c1 | Sales expenses of sale to future residents/First forecast year | bzk-ww-i:SaleToFutureResidentsSalesExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r2.c2 | Sales expenses of sale to future residents/Second forecast year | bzk-ww-i:SaleToFutureResidentsSalesExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r2.c3 | Sales expenses of sale to future residents/Third forecast year | bzk-ww-i:SaleToFutureResidentsSalesExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r2.c4 | Sales expenses of sale to future residents/Fourth forecast year | bzk-ww-i:SaleToFutureResidentsSalesExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r2.c5 | Sales expenses of sale to future residents/Fifth forecast year | bzk-ww-i:SaleToFutureResidentsSalesExpenses | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |
| r3.c0 | Market value of sale to future residents/Forecast reporting year | bzk-ww-i:SaleToFutureResidentsMarketValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r3.c1 | Market value of sale to future residents/First forecast year | bzk-ww-i:SaleToFutureResidentsMarketValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r3.c2 | Market value of sale to future residents/Second forecast year | bzk-ww-i:SaleToFutureResidentsMarketValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r3.c3 | Market value of sale to future residents/Third forecast year | bzk-ww-i:SaleToFutureResidentsMarketValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r3.c4 | Market value of sale to future residents/Fourth forecast year | bzk-ww-i:SaleToFutureResidentsMarketValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r3.c5 | Market value of sale to future residents/Fifth forecast year | bzk-ww-i:SaleToFutureResidentsMarketValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |
| r4.c0 | Policy value of sale to future residents/Forecast reporting year | bzk-ww-i:SaleToFutureResidentsPolicyValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentStartDateParam/$FinancialReportingPeriodCurrentEndDateParam |
| r4.c1 | Policy value of sale to future residents/First forecast year | bzk-ww-i:SaleToFutureResidentsPolicyValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFirstPeriodStartDateParam/$FinancialReportingPeriodFirstPeriodEndDateParam |
| r4.c2 | Policy value of sale to future residents/Second forecast year | bzk-ww-i:SaleToFutureResidentsPolicyValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodSecondPeriodStartDateParam/$FinancialReportingPeriodSecondPeriodEndDateParam |
| r4.c3 | Policy value of sale to future residents/Third forecast year | bzk-ww-i:SaleToFutureResidentsPolicyValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodThirdPeriodStartDateParam/$FinancialReportingPeriodThirdPeriodEndDateParam |
| r4.c4 | Policy value of sale to future residents/Fourth forecast year | bzk-ww-i:SaleToFutureResidentsPolicyValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFourthPeriodStartDateParam/$FinancialReportingPeriodFourthPeriodEndDateParam |
| r4.c5 | Policy value of sale to future residents/Fifth forecast year | bzk-ww-i:SaleToFutureResidentsPolicyValue | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodFifthPeriodStartDateParam/$FinancialReportingPeriodFifthPeriodEndDateParam |