| r0.c0 | Disclosure of property, plant and equipment/Current | jenv-bw2-i:PropertyPlantEquipmentDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2018-01-01')/xs:date('2018-12-31') |
| r1.c0 | Disclosure of buildings, used in operations/Current | ocw-i:BuildingsUsedInOperationsDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2018-01-01')/xs:date('2018-12-31') |
| r2.c0 | Disclosure of land/Current | ocw-i:LandUsedInOperationsDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2018-01-01')/xs:date('2018-12-31') |
| r3.c0 | Disclosure of inventory and appliances/Current | ocw-i:InventoryAndAppliancesDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2018-01-01')/xs:date('2018-12-31') |
| r4.c0 | Disclosure of other tangible assets/Current | jenv-bw2-i:TangibleAssetsOtherDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2018-01-01')/xs:date('2018-12-31') |
| r5.c0 | Disclosure of construction in progress and prepayments of property, plant and equipment/Current | jenv-bw2-i:ConstructionInProgressPrepaymentsPropertyPlantEquipmentDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2018-01-01')/xs:date('2018-12-31') |
| r6.c0 | Disclosure of property, plant and equipment not used in operations/Current | jenv-bw2-i:PropertyPlantEquipmentNotUsedInOperationsDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2018-01-01')/xs:date('2018-12-31') |