| r0.c0 | Land positions balance sheet value/Current | bzk-ti-i:LandPositionsBalanceSheet | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r0.c1 | Land positions balance sheet value/Previous | bzk-ti-i:LandPositionsBalanceSheet | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Value of possible contractually agreed and included in the off balance sheet land positions/Current | bzk-ti-i:LandPositionsContractuallyAgreed | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c1 | Value of possible contractually agreed and included in the off balance sheet land positions/Previous | bzk-ti-i:LandPositionsContractuallyAgreed | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Risks expected as result of the land positions/Current | bzk-ti-i:LandPositionsRisks | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c1 | Risks expected as result of the land positions/Previous | bzk-ti-i:LandPositionsRisks | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |