| r0.c0 | Disclosure of equity/Current | jenv-bw2-i:EquityDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c0 | Disclosure of general reserve/Current | rj-i:GeneralReserveDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r2.c0 | Disclosure of special purpose reserve public/Current | ocw-i:SpecialPurposeReservePublicDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r3.c0 | Disclosure of special purpose reserve private/Current | ocw-i:SpecialPurposeReservePrivateDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r4.c0 | Disclosure of special purpose funds public/Current | ocw-i:SpecialPurposeFundsPublicDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r5.c0 | Disclosure of special purpose funds private/Current | ocw-i:SpecialPurposeFundsPrivateDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r6.c0 | Disclosure of revaluation reserve/Current | jenv-bw2-i:RevaluationReserveDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r7.c0 | Disclosure of other legal reserves/Current | ocw-i:LegalReservesOtherDisclosure | nl-types:string100000ItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r8.c0 | Disclosure of statutory reserves/Current | jenv-bw2-i:StatutoryReservesDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r9.c0 | Disclosure of group equity/Current | jenv-bw2-i:EquityGroupDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r10.c0 | Disclosure of share in group equity not accrued to legal entity/Current | jenv-bw2-i:NoncontrollingInterestDisclosure | nl-types:formattedExplanationItemType | duration | jenv-bw2-dm:ConsolidatedMember | ocw-dm:ActualsMember | xs:date('2020-01-01')/xs:date('2020-12-31') |