| r0.c0 | Intangible assets/Current | jenv-bw2-i:IntangibleAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r0.c1 | Intangible assets/Previous | jenv-bw2-i:IntangibleAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r1.c0 | Intangible assets/Current | kvk-abstr:IntangibleAssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r1.c1 | Intangible assets/Previous | kvk-abstr:IntangibleAssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r2.c0 | Social real estate in exploitation/Current | bzk-ww-i:SocialRealEstateInExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r2.c1 | Social real estate in exploitation/Previous | bzk-ww-i:SocialRealEstateInExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r3.c0 | Commercial real estate in exploitation/Current | bzk-ww-i:CommercialRealEstateInExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r3.c1 | Commercial real estate in exploitation/Previous | bzk-ww-i:CommercialRealEstateInExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r4.c0 | Real estate sold subject to terms and conditions/Current | rj-i:RealEstateSoldSubjectTermsConditions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r4.c1 | Real estate sold subject to terms and conditions/Previous | rj-i:RealEstateSoldSubjectTermsConditions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r5.c0 | Real estate in development for own exploitation/Current | bzk-ww-i:RealEstateInDevelopmentForOwnExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r5.c1 | Real estate in development for own exploitation/Previous | bzk-ww-i:RealEstateInDevelopmentForOwnExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r6.c0 | Investment properties/Current | rj-i:InvestmentProperties | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r6.c1 | Investment properties/Previous | rj-i:InvestmentProperties | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r7.c0 | Investment properties/Current | kvk-abstr:InvestmentPropertiesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r7.c1 | Investment properties/Previous | kvk-abstr:InvestmentPropertiesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r8.c0 | Real estate and movable property used for exploitation/Current | bzk-ww-i:RealEstateAndMovablePropertyUsedForExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r8.c1 | Real estate and movable property used for exploitation/Previous | bzk-ww-i:RealEstateAndMovablePropertyUsedForExploitation | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r9.c0 | Property, plant and equipment/Current | jenv-bw2-i:PropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r9.c1 | Property, plant and equipment/Previous | jenv-bw2-i:PropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r10.c0 | Property, plant and equipment/Current | kvk-abstr:PropertyPlantEquipmentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r10.c1 | Property, plant and equipment/Previous | kvk-abstr:PropertyPlantEquipmentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r11.c0 | Non-current receivables from other legal entities and companies with a participating interest in the legal entity or from participating interests of the legal entity/Current | jenv-bw2-i:ReceivablesShareholdersParticipatingInterestsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r11.c1 | Non-current receivables from other legal entities and companies with a participating interest in the legal entity or from participating interests of the legal entity/Previous | jenv-bw2-i:ReceivablesShareholdersParticipatingInterestsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r12.c0 | Other investments in participating interests/Current | jenv-bw2-i:InvestmentsInParticipatingInterestsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r12.c1 | Other investments in participating interests/Previous | jenv-bw2-i:InvestmentsInParticipatingInterestsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r13.c0 | Non-current deferred tax assets/Current | rj-i:DeferredTaxAssetsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r13.c1 | Non-current deferred tax assets/Previous | rj-i:DeferredTaxAssetsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r14.c0 | Loans granted/Current | bzk-ww-i:LoansGranted | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r14.c1 | Loans granted/Previous | bzk-ww-i:LoansGranted | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r15.c0 | Non-current other securities/Current | jenv-bw2-i:SecuritiesOtherNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r15.c1 | Non-current other securities/Previous | jenv-bw2-i:SecuritiesOtherNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r16.c0 | Non-current other receivables/Current | jenv-bw2-i:ReceivablesOtherNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r16.c1 | Non-current other receivables/Previous | jenv-bw2-i:ReceivablesOtherNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r17.c0 | Financial assets/Current | jenv-bw2-i:FinancialAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r17.c1 | Financial assets/Previous | jenv-bw2-i:FinancialAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r18.c0 | Financial assets/Current | kvk-abstr:FinancialAssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r18.c1 | Financial assets/Previous | kvk-abstr:FinancialAssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r19.c0 | Non-current assets/Current | jenv-bw2-i:AssetsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r19.c1 | Non-current assets/Previous | jenv-bw2-i:AssetsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r20.c0 | Non-current assets/Current | kvk-abstr:AssetsNoncurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r20.c1 | Non-current assets/Previous | kvk-abstr:AssetsNoncurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r21.c0 | Real estate for sale/Current | bzk-ww-i:RealEstateForSale | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r21.c1 | Real estate for sale/Previous | bzk-ww-i:RealEstateForSale | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r22.c0 | Real estate in development for sale/Current | bzk-ww-i:RealEstateInDevelopmentForSale | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r22.c1 | Real estate in development for sale/Previous | bzk-ww-i:RealEstateInDevelopmentForSale | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r23.c0 | Other inventories/Current | bzk-ww-i:InventoriesOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r23.c1 | Other inventories/Previous | bzk-ww-i:InventoriesOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r24.c0 | Inventories/Current | jenv-bw2-i:Inventories | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r24.c1 | Inventories/Previous | jenv-bw2-i:Inventories | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r25.c0 | Inventories/Current | kvk-abstr:InventoriesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r25.c1 | Inventories/Previous | kvk-abstr:InventoriesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r26.c0 | Construction contracts (assets)/Current | rj-i:ConstructionContractsAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r26.c1 | Construction contracts (assets)/Previous | rj-i:ConstructionContractsAssets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r27.c0 | Rental receivables (current)/Current | bzk-ww-i:RentalReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r27.c1 | Rental receivables (current)/Previous | bzk-ww-i:RentalReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r28.c0 | Government receivables/Current | bzk-ww-i:GovernmentReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r28.c1 | Government receivables/Previous | bzk-ww-i:GovernmentReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r29.c0 | Current receivables from other legal entities and companies with a participating interest in the legal entity or from participating interests of the legal entity/Current | jenv-bw2-i:ReceivablesShareholdersParticipatingInterestsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r29.c1 | Current receivables from other legal entities and companies with a participating interest in the legal entity or from participating interests of the legal entity/Previous | jenv-bw2-i:ReceivablesShareholdersParticipatingInterestsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r30.c0 | Current deferred tax assets/Current | rj-i:DeferredTaxAssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r30.c1 | Current deferred tax assets/Previous | rj-i:DeferredTaxAssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r31.c0 | Taxes receivable and social security contributions receivable/Current | bzk-ww-i:TaxesSocialSecurityContributionsReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r31.c1 | Taxes receivable and social security contributions receivable/Previous | bzk-ww-i:TaxesSocialSecurityContributionsReceivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r32.c0 | Current other receivables/Current | jenv-bw2-i:ReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r32.c1 | Current other receivables/Previous | jenv-bw2-i:ReceivablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r33.c0 | Prepayments and accrued income/Current | jenv-bw2-i:AccruedIncome | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r33.c1 | Prepayments and accrued income/Previous | jenv-bw2-i:AccruedIncome | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r34.c0 | Receivables/Current | jenv-bw2-i:Receivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r34.c1 | Receivables/Previous | jenv-bw2-i:Receivables | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r35.c0 | Receivables/Current | kvk-abstr:ReceivablesDisclosureTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r35.c1 | Receivables/Previous | kvk-abstr:ReceivablesDisclosureTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r36.c0 | Current securities/Current | jenv-bw2-i:SecuritiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r36.c1 | Current securities/Previous | jenv-bw2-i:SecuritiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r37.c0 | Cash and cash equivalents/Current | jenv-bw2-i:CashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r37.c1 | Cash and cash equivalents/Previous | jenv-bw2-i:CashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r38.c0 | Current assets/Current | jenv-bw2-i:AssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r38.c1 | Current assets/Previous | jenv-bw2-i:AssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r39.c0 | Current assets/Current | kvk-abstr:AssetsCurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r39.c1 | Current assets/Previous | kvk-abstr:AssetsCurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r40.c0 | Assets/Current | jenv-bw2-i:Assets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r40.c1 | Assets/Previous | jenv-bw2-i:Assets | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r41.c0 | Assets/Current | kvk-abstr:AssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r41.c1 | Assets/Previous | kvk-abstr:AssetsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r42.c0 | Equity/Current | jenv-bw2-i:Equity | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r42.c1 | Equity/Previous | jenv-bw2-i:Equity | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r43.c0 | Share in group equity not accrued to legal entity/Current | jenv-bw2-i:NoncontrollingInterest | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r43.c1 | Share in group equity not accrued to legal entity/Previous | jenv-bw2-i:NoncontrollingInterest | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r44.c0 | Group equity/Current | jenv-bw2-i:EquityGroup | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r44.c1 | Group equity/Previous | jenv-bw2-i:EquityGroup | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r45.c0 | Group equity/Current | kvk-abstr:EquityGroupDisclosureTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r45.c1 | Group equity/Previous | kvk-abstr:EquityGroupDisclosureTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r46.c0 | Equalisation account/Current | rj-i:EqualisationAccount | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r46.c1 | Equalisation account/Previous | rj-i:EqualisationAccount | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r47.c0 | Provision for unprofitable investments and restructuring/Current | bzk-ww-i:ProvisionUnprofitableInvestmentsAndRestructuring | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r47.c1 | Provision for unprofitable investments and restructuring/Previous | bzk-ww-i:ProvisionUnprofitableInvestmentsAndRestructuring | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r48.c0 | Deferred tax liabilities/Current | rj-i:DeferredTaxLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r48.c1 | Deferred tax liabilities/Previous | rj-i:DeferredTaxLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r49.c0 | Other provisions/Current | jenv-bw2-i:ProvisionsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r49.c1 | Other provisions/Previous | jenv-bw2-i:ProvisionsOther | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r50.c0 | Provisions/Current | jenv-bw2-i:Provisions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r50.c1 | Provisions/Previous | jenv-bw2-i:Provisions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r51.c0 | Provisions/Current | kvk-abstr:ProvisionsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r51.c1 | Provisions/Previous | kvk-abstr:ProvisionsTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r52.c0 | Non current payables to government/Current | bzk-ww-i:PayablesGovernmentNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r52.c1 | Non current payables to government/Previous | bzk-ww-i:PayablesGovernmentNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r53.c0 | Non-current payables to banks/Current | jenv-bw2-i:PayablesBanksNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r53.c1 | Non-current payables to banks/Previous | jenv-bw2-i:PayablesBanksNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r54.c0 | Non-current payables to other legal entities and companies with a participating interest in the legal entity or to participating interests of the legal entity/Current | jenv-bw2-i:PayablesShareholdersParticipatingInterestsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r54.c1 | Non-current payables to other legal entities and companies with a participating interest in the legal entity or to participating interests of the legal entity/Previous | jenv-bw2-i:PayablesShareholdersParticipatingInterestsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r55.c0 | Liabilities from real estate sold subject to terms and conditions/Current | rj-i:LiabilitiesFromRealEstateSoldSubjectTermsConditions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r55.c1 | Liabilities from real estate sold subject to terms and conditions/Previous | rj-i:LiabilitiesFromRealEstateSoldSubjectTermsConditions | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r56.c0 | Non-current other payables/Current | jenv-bw2-i:PayablesOtherNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r56.c1 | Non-current other payables/Previous | jenv-bw2-i:PayablesOtherNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r57.c0 | Non-current liabilities/Current | jenv-bw2-i:LiabilitiesNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r57.c1 | Non-current liabilities/Previous | jenv-bw2-i:LiabilitiesNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r58.c0 | Non-current liabilities/Current | kvk-abstr:LiabilitiesNoncurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r58.c1 | Non-current liabilities/Previous | kvk-abstr:LiabilitiesNoncurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r59.c0 | Current payables to government/Current | bzk-ww-i:PayablesGovernmentCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r59.c1 | Current payables to government/Previous | bzk-ww-i:PayablesGovernmentCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r60.c0 | Current payables to banks/Current | jenv-bw2-i:PayablesBanksCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r60.c1 | Current payables to banks/Previous | jenv-bw2-i:PayablesBanksCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r61.c0 | Current trade payables/Current | jenv-bw2-i:TradePayablesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r61.c1 | Current trade payables/Previous | jenv-bw2-i:TradePayablesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r62.c0 | Current payables to other legal entities and companies with a participating interest in the legal entity or to participating interests of the legal entity/Current | jenv-bw2-i:PayablesShareholdersParticipatingInterestsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r62.c1 | Current payables to other legal entities and companies with a participating interest in the legal entity or to participating interests of the legal entity/Previous | jenv-bw2-i:PayablesShareholdersParticipatingInterestsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r63.c0 | Current payables relating to taxes, social security contributions and pensions/Current | bzk-dvi-i-2019:TaxesSocialSecurityContributionsPensionsPayableCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r63.c1 | Current payables relating to taxes, social security contributions and pensions/Previous | bzk-dvi-i-2019:TaxesSocialSecurityContributionsPensionsPayableCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r64.c0 | Current other payables/Current | jenv-bw2-i:PayablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r64.c1 | Current other payables/Previous | jenv-bw2-i:PayablesOtherCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r65.c0 | Current accruals and deferred income/Current | jenv-bw2-i:AccrualsAndDeferredIncomeCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r65.c1 | Current accruals and deferred income/Previous | jenv-bw2-i:AccrualsAndDeferredIncomeCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r66.c0 | Current liabilities/Current | jenv-bw2-i:LiabilitiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r66.c1 | Current liabilities/Previous | jenv-bw2-i:LiabilitiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r67.c0 | Current liabilities/Current | kvk-abstr:LiabilitiesCurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r67.c1 | Current liabilities/Previous | kvk-abstr:LiabilitiesCurrentTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r68.c0 | Equity and liabilities/Current | jenv-bw2-i:EquityAndLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r68.c1 | Equity and liabilities/Previous | jenv-bw2-i:EquityAndLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |
| r69.c0 | Equity and liabilities/Current | kvk-abstr:EquityAndLiabilitiesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodCurrentEndDateParam |
| r69.c1 | Equity and liabilities/Previous | kvk-abstr:EquityAndLiabilitiesTitle | xbrli:stringItemType | duration | $BasisOfPreparationParam | jenv-bw2-dm:ConsolidatedMember | $FinancialReportingPeriodPreviousEndDateParam |