| r0.c0 | Number of independent rental properties permitted institution end 2019/Current | bzk-dvi-i-2019:NumberOfIndependentRentalProperties | nl-types:nonNegativeInteger20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |
| r1.c0 | Number of units with a performance agreement on the use of the income-related rent increase higher than the norm/Current | bzk-dvi-i-2019:NumberOfUnitsWithPerfomanceAgreement | nl-types:nonNegativeInteger20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |
| r2.c0 | Additional revenue from the higher rent increase than the norm/Current | bzk-dvi-i-2019:AdditionalRevenueFromHigherRentThanNorm | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |
| r3.c0 | Number of independent rental properties relevant for the rent key/Current | bzk-dvi-i:NumberOfIndependentRentalPropertiesRelevantForRentKey | nl-types:nonNegativeInteger20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |
| r4.c0 | Monthly rent (calculation rent) based on numbers/Current | bzk-dvi-i:MonthlyRentBasedOnNumbers | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |
| r5.c0 | Monthly rent (calculation rent) based on numbers/Current | bzk-dvi-i:MonthlyRentBasedOnNumbers | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |
| r6.c0 | Mutation monthly rent/Current | bzk-dvi-i-2019:MutationMonthlyRent | nl-types:monetaryNoDecimals20ItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |
| r7.c0 | Rent increase/Current | bzk-dvi-i:RentIncrease | bzk-dvi-types:percent4DecimalsItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember |