| | concept | ocw-i:PropertyPlantEquipmentIntangibleAssetsCategory | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | ocw-dim:AmortisationDepreciationPeriodRateSpecificationAxis | * | y | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:SeparateMember | x |
| | concept | ocw-i:PropertyPlantEquipmentDepreciationAmortisationIntangibleAssetsPeriodYears | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | ocw-dim:AmortisationDepreciationPeriodRateSpecificationAxis | * | y | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:SeparateMember | x |
| | concept | ocw-i:PropertyPlantEquipmentDepreciationIntangibleAssetsAmortisationRate | x | | ocw-dim:ActualsEstimatesAxis | ocw-dm:ActualsMember | x | | ocw-dim:AmortisationDepreciationPeriodRateSpecificationAxis | * | y | | venj-bw2-dim:FinancialStatementsTypeAxis | venj-bw2-dm:SeparateMember | x |
| | ocw-dim:AmortisationDepreciationPeriodRateSpecificationAxis | * | y | | period | xs:date('2017-01-01')/xs:date('2017-12-31') | x |
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