| r0.c0 | Capitalisation factor/Previous | ocw-i:CapitalisationFactor | xbrli:decimalItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r0.c1 | Capitalisation factor/Current | ocw-i:CapitalisationFactor | xbrli:decimalItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r0.c2 | Capitalisation factor/Current + 1 | ocw-i:CapitalisationFactor | xbrli:decimalItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r0.c3 | Capitalisation factor/Current + 2 | ocw-i:CapitalisationFactor | xbrli:decimalItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r0.c4 | Capitalisation factor/Current + 3 | ocw-i:CapitalisationFactor | xbrli:decimalItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r0.c5 | Capitalisation factor/Current + 4 | ocw-i:CapitalisationFactor | xbrli:decimalItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r0.c6 | Capitalisation factor/Current + 5 | ocw-i:CapitalisationFactor | xbrli:decimalItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r1.c0 | Resilience excluding property, plant and equipment/Previous | ocw-i:ResilienceExcludingPropertyPlantEquipment | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r1.c1 | Resilience excluding property, plant and equipment/Current | ocw-i:ResilienceExcludingPropertyPlantEquipment | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r1.c2 | Resilience excluding property, plant and equipment/Current + 1 | ocw-i:ResilienceExcludingPropertyPlantEquipment | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r1.c3 | Resilience excluding property, plant and equipment/Current + 2 | ocw-i:ResilienceExcludingPropertyPlantEquipment | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r1.c4 | Resilience excluding property, plant and equipment/Current + 3 | ocw-i:ResilienceExcludingPropertyPlantEquipment | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r1.c5 | Resilience excluding property, plant and equipment/Current + 4 | ocw-i:ResilienceExcludingPropertyPlantEquipment | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r1.c6 | Resilience excluding property, plant and equipment/Current + 5 | ocw-i:ResilienceExcludingPropertyPlantEquipment | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r2.c0 | General reserve / Operating income including financial income/Previous | ocw-i:GeneralReserveIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r2.c1 | General reserve / Operating income including financial income/Current | ocw-i:GeneralReserveIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r2.c2 | General reserve / Operating income including financial income/Current + 1 | ocw-i:GeneralReserveIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r2.c3 | General reserve / Operating income including financial income/Current + 2 | ocw-i:GeneralReserveIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r2.c4 | General reserve / Operating income including financial income/Current + 3 | ocw-i:GeneralReserveIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r2.c5 | General reserve / Operating income including financial income/Current + 4 | ocw-i:GeneralReserveIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r2.c6 | General reserve / Operating income including financial income/Current + 5 | ocw-i:GeneralReserveIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r3.c0 | Provisions / Operating income including financial income/Previous | ocw-i:ProvisionsIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r3.c1 | Provisions / Operating income including financial income/Current | ocw-i:ProvisionsIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r3.c2 | Provisions / Operating income including financial income/Current + 1 | ocw-i:ProvisionsIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r3.c3 | Provisions / Operating income including financial income/Current + 2 | ocw-i:ProvisionsIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r3.c4 | Provisions / Operating income including financial income/Current + 3 | ocw-i:ProvisionsIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r3.c5 | Provisions / Operating income including financial income/Current + 4 | ocw-i:ProvisionsIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r3.c6 | Provisions / Operating income including financial income/Current + 5 | ocw-i:ProvisionsIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r4.c0 | Central government contributions / Operating income including financial income/Previous | ocw-i:GovernmentContributionsCentralGovernmentIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r4.c1 | Central government contributions / Operating income including financial income/Current | ocw-i:GovernmentContributionsCentralGovernmentIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r4.c2 | Central government contributions / Operating income including financial income/Current + 1 | ocw-i:GovernmentContributionsCentralGovernmentIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r4.c3 | Central government contributions / Operating income including financial income/Current + 2 | ocw-i:GovernmentContributionsCentralGovernmentIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r4.c4 | Central government contributions / Operating income including financial income/Current + 3 | ocw-i:GovernmentContributionsCentralGovernmentIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r4.c5 | Central government contributions / Operating income including financial income/Current + 4 | ocw-i:GovernmentContributionsCentralGovernmentIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r4.c6 | Central government contributions / Operating income including financial income/Current + 5 | ocw-i:GovernmentContributionsCentralGovernmentIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r5.c0 | Other government contributions and subsidies / Operating income including financial income/Previous | ocw-i:GovernmentContributionsSubsidiesOtherGovernmentsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r5.c1 | Other government contributions and subsidies / Operating income including financial income/Current | ocw-i:GovernmentContributionsSubsidiesOtherGovernmentsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r5.c2 | Other government contributions and subsidies / Operating income including financial income/Current + 1 | ocw-i:GovernmentContributionsSubsidiesOtherGovernmentsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r5.c3 | Other government contributions and subsidies / Operating income including financial income/Current + 2 | ocw-i:GovernmentContributionsSubsidiesOtherGovernmentsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r5.c4 | Other government contributions and subsidies / Operating income including financial income/Current + 3 | ocw-i:GovernmentContributionsSubsidiesOtherGovernmentsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r5.c5 | Other government contributions and subsidies / Operating income including financial income/Current + 4 | ocw-i:GovernmentContributionsSubsidiesOtherGovernmentsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r5.c6 | Other government contributions and subsidies / Operating income including financial income/Current + 5 | ocw-i:GovernmentContributionsSubsidiesOtherGovernmentsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r6.c0 | Land and buildings, additions / Operating income including financial income/Previous | ocw-i:LandAndBuildingsAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r6.c1 | Land and buildings, additions / Operating income including financial income/Current | ocw-i:LandAndBuildingsAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r6.c2 | Land and buildings, additions / Operating income including financial income/Current + 1 | ocw-i:LandAndBuildingsAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r6.c3 | Land and buildings, additions / Operating income including financial income/Current + 2 | ocw-i:LandAndBuildingsAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r6.c4 | Land and buildings, additions / Operating income including financial income/Current + 3 | ocw-i:LandAndBuildingsAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r6.c5 | Land and buildings, additions / Operating income including financial income/Current + 4 | ocw-i:LandAndBuildingsAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r6.c6 | Land and buildings, additions / Operating income including financial income/Current + 5 | ocw-i:LandAndBuildingsAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r7.c0 | Inventory and appliances additions / Operating income including financial income/Previous | ocw-i:InventoryAndAppliancesAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r7.c1 | Inventory and appliances additions / Operating income including financial income/Current | ocw-i:InventoryAndAppliancesAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r7.c2 | Inventory and appliances additions / Operating income including financial income/Current + 1 | ocw-i:InventoryAndAppliancesAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r7.c3 | Inventory and appliances additions / Operating income including financial income/Current + 2 | ocw-i:InventoryAndAppliancesAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r7.c4 | Inventory and appliances additions / Operating income including financial income/Current + 3 | ocw-i:InventoryAndAppliancesAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r7.c5 | Inventory and appliances additions / Operating income including financial income/Current + 4 | ocw-i:InventoryAndAppliancesAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r7.c6 | Inventory and appliances additions / Operating income including financial income/Current + 5 | ocw-i:InventoryAndAppliancesAdditionsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r8.c0 | Net working capital income total ratio/Previous | ocw-i:NetWorkingCapitalIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r8.c1 | Net working capital income total ratio/Current | ocw-i:NetWorkingCapitalIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r8.c2 | Net working capital income total ratio/Current + 1 | ocw-i:NetWorkingCapitalIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r8.c3 | Net working capital income total ratio/Current + 2 | ocw-i:NetWorkingCapitalIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r8.c4 | Net working capital income total ratio/Current + 3 | ocw-i:NetWorkingCapitalIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r8.c5 | Net working capital income total ratio/Current + 4 | ocw-i:NetWorkingCapitalIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r8.c6 | Net working capital income total ratio/Current + 5 | ocw-i:NetWorkingCapitalIncomeTotalRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r9.c0 | Securities non-current to equity ratio/Previous | ocw-i:SecuritiesNoncurrentEquityRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r9.c1 | Securities non-current to equity ratio/Current | ocw-i:SecuritiesNoncurrentEquityRatio | num:percentItemType | instant | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r9.c2 | Securities non-current to equity ratio/Current + 1 | ocw-i:SecuritiesNoncurrentEquityRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r9.c3 | Securities non-current to equity ratio/Current + 2 | ocw-i:SecuritiesNoncurrentEquityRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r9.c4 | Securities non-current to equity ratio/Current + 3 | ocw-i:SecuritiesNoncurrentEquityRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r9.c5 | Securities non-current to equity ratio/Current + 4 | ocw-i:SecuritiesNoncurrentEquityRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r9.c6 | Securities non-current to equity ratio/Current + 5 | ocw-i:SecuritiesNoncurrentEquityRatio | num:percentItemType | instant | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r10.c0 | Income from third party contracts / Operating income including financial income/Previous | ocw-i:IncomeThirdPartyContractsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r10.c1 | Income from third party contracts / Operating income including financial income/Current | ocw-i:IncomeThirdPartyContractsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r10.c2 | Income from third party contracts / Operating income including financial income/Current + 1 | ocw-i:IncomeThirdPartyContractsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r10.c3 | Income from third party contracts / Operating income including financial income/Current + 2 | ocw-i:IncomeThirdPartyContractsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r10.c4 | Income from third party contracts / Operating income including financial income/Current + 3 | ocw-i:IncomeThirdPartyContractsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r10.c5 | Income from third party contracts / Operating income including financial income/Current + 4 | ocw-i:IncomeThirdPartyContractsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r10.c6 | Income from third party contracts / Operating income including financial income/Current + 5 | ocw-i:IncomeThirdPartyContractsIncomeTotalRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r11.c0 | Income from third party contracts / Government contributions/Previous | ocw-i:IncomeThirdPartyContractsCentralGovernmentContributionsRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r11.c1 | Income from third party contracts / Government contributions/Current | ocw-i:IncomeThirdPartyContractsCentralGovernmentContributionsRatio | num:percentItemType | duration | ocw-dm:ActualsMember | venj-bw2-dm:SeparateMember |
| r11.c2 | Income from third party contracts / Government contributions/Current + 1 | ocw-i:IncomeThirdPartyContractsCentralGovernmentContributionsRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r11.c3 | Income from third party contracts / Government contributions/Current + 2 | ocw-i:IncomeThirdPartyContractsCentralGovernmentContributionsRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r11.c4 | Income from third party contracts / Government contributions/Current + 3 | ocw-i:IncomeThirdPartyContractsCentralGovernmentContributionsRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r11.c5 | Income from third party contracts / Government contributions/Current + 4 | ocw-i:IncomeThirdPartyContractsCentralGovernmentContributionsRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |
| r11.c6 | Income from third party contracts / Government contributions/Current + 5 | ocw-i:IncomeThirdPartyContractsCentralGovernmentContributionsRatio | num:percentItemType | duration | ocw-dm:ForecastMember | venj-bw2-dm:SeparateMember |