| r0.c0 | Total policy value/Forecast year | bzk-ww-i:TotalPolicyValue | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c0 | Policy value housings units/Forecast year | bzk-ww-i:PolicyValueUnitsLivingSpace | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r2.c0 | Market value units living space/Forecast year | bzk-ww-i:MarketValueUnitsLivingSpace | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r3.c0 | Availability exit (continue to operate)/Forecast year | bzk-ww-i:AvailabilityExitContinueToOperate | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r4.c0 | Affordability exit (rental)/Forecast year | bzk-ww-i:AffordabilityExitRental | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r5.c0 | Quality exit (maintenance)/Forecast year | bzk-ww-i:QualityExitMaintenance | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r6.c0 | Management exit (management expenses)/Forecast year | bzk-ww-i:ManagementExitManagementExpenses | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |
| r7.c0 | Market value units excluding living space/Forecast year | bzk-ww-i:MarketValueUnitsExcludingLivingSpace | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | bzk-ww-dm:CompoundNonDAEBActivitiesMember | $FinancialReportingPeriodCurrentEndDateParam |