| r0.c0 | Financing deficit/surplus to be settled in rates included in receivables relating to financing deficit/Current | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInReceivablesFinancingDeficit | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r0.c1 | Financing deficit/surplus to be settled in rates included in receivables relating to financing deficit/Previous | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInReceivablesFinancingDeficit | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r0.c2 | Financing deficit/surplus to be settled in rates included in receivables relating to financing deficit/2 years previous | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInReceivablesFinancingDeficit | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r0.c3 | Financing deficit/surplus to be settled in rates included in receivables relating to financing deficit/3 years previous | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInReceivablesFinancingDeficit | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPrePrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r0.c4 | Financing deficit/surplus to be settled in rates included in receivables relating to financing deficit/Total | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInReceivablesFinancingDeficit | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | rj-dm:FinancingDeficitSurplusToBeSettledInRatesTotalMember | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c0 | Financing deficit/surplus to be settled in rates included in liabilities relating to financing surplus/Current | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInLiabilitiesFinancingSurplus | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c1 | Financing deficit/surplus to be settled in rates included in liabilities relating to financing surplus/Previous | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInLiabilitiesFinancingSurplus | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c2 | Financing deficit/surplus to be settled in rates included in liabilities relating to financing surplus/2 years previous | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInLiabilitiesFinancingSurplus | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c3 | Financing deficit/surplus to be settled in rates included in liabilities relating to financing surplus/3 years previous | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInLiabilitiesFinancingSurplus | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPrePrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r1.c4 | Financing deficit/surplus to be settled in rates included in liabilities relating to financing surplus/Total | rj-i:FinancingDeficitSurplusToBeSettledInRatesIncludedInLiabilitiesFinancingSurplus | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | rj-dm:FinancingDeficitSurplusToBeSettledInRatesTotalMember | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c0 | Financing deficit (surplus) to be settled in rates/Current | rj-i:FinancingDeficitSurplusToBeSettledInRates | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c1 | Financing deficit (surplus) to be settled in rates/Previous | rj-i:FinancingDeficitSurplusToBeSettledInRates | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c2 | Financing deficit (surplus) to be settled in rates/2 years previous | rj-i:FinancingDeficitSurplusToBeSettledInRates | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c3 | Financing deficit (surplus) to be settled in rates/3 years previous | rj-i:FinancingDeficitSurplusToBeSettledInRates | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodPrePrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r2.c4 | Financing deficit (surplus) to be settled in rates/Total | rj-i:FinancingDeficitSurplusToBeSettledInRates | nl-types:monetaryNoDecimalsItemType | instant | $FinancialReportingPeriodCurrentEndDateParam | rj-dm:FinancingDeficitSurplusToBeSettledInRatesTotalMember | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c0 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1.1/Current | | | | $FinancialReportingPeriodCurrentEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c1 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1.1/Previous | | | | $FinancialReportingPeriodPreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c2 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1.1/2 years previous | | | | $FinancialReportingPeriodPrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c3 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1.1/3 years previous | | | | $FinancialReportingPeriodPrePrePreviousEndDateParam | N/A | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r3.c4 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1.1/Total | | | | $FinancialReportingPeriodCurrentEndDateParam | rj-dm:FinancingDeficitSurplusToBeSettledInRatesTotalMember | $BasisOfPreparationParam | venj-bw2-dm:ConsolidatedMember |
| r4.c0 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1/Current | | | | $FinancialReportingPeriodCurrentEndDateParam | N/A | $BasisOfPreparationParam | N/A |
| r4.c1 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1/Previous | | | | $FinancialReportingPeriodPreviousEndDateParam | N/A | $BasisOfPreparationParam | N/A |
| r4.c2 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1/2 years previous | | | | $FinancialReportingPeriodPrePreviousEndDateParam | N/A | $BasisOfPreparationParam | N/A |
| r4.c3 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1/3 years previous | | | | $FinancialReportingPeriodPrePrePreviousEndDateParam | N/A | $BasisOfPreparationParam | N/A |
| r4.c4 | kvk-table_NotesConsolidatedFinancingDeficitSurplusToBeSettledInRatesBreakdownHealthCareTable-y.1/Total | | | | $FinancialReportingPeriodCurrentEndDateParam | rj-dm:FinancingDeficitSurplusToBeSettledInRatesTotalMember | $BasisOfPreparationParam | N/A |