| r0.c0 | HBO [member]/Current | ocw-dm:HBOMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r0.c1 | HBO [member]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-dm:HBOMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r1.c0 | MBO [member]/Current | ocw-dm:MBOMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r1.c1 | MBO [member]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-dm:MBOMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r2.c0 | VO [member]/Current | ocw-dm:VOMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r2.c1 | VO [member]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-dm:VOMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r3.c0 | PO [member]/Current | ocw-dm:POMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r3.c1 | PO [member]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-dm:POMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r4.c0 | Other government funded activities [member]/Current | ocw-dm:OtherGovernmentFundedActivitiesMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r4.c1 | Other government funded activities [member]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-dm:OtherGovernmentFundedActivitiesMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r5.c0 | Segment reporting, total [member]/Current | ocw-dm:SegmentReportingTotalMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r5.c1 | Segment reporting, total [member]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-dm:SegmentReportingTotalMember | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r6.c0 | Segment information, classes [title]/Current | ocw-abstr:SegmentReportingClassesTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r6.c1 | Segment information, classes [title]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-abstr:SegmentReportingClassesTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r7.c0 | Intangible assets/Current | jenv-bw2-i:IntangibleAssets | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r7.c1 | Intangible assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:IntangibleAssets | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r8.c0 | Property, plant and equipment/Current | jenv-bw2-i:PropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r8.c1 | Property, plant and equipment/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:PropertyPlantEquipment | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r9.c0 | Financial assets/Current | jenv-bw2-i:FinancialAssets | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r9.c1 | Financial assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:FinancialAssets | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r10.c0 | Non-current assets/Current | jenv-bw2-i:AssetsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r10.c1 | Non-current assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:AssetsNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r11.c0 | Non-current assets/Current | kvk-abstr:AssetsNoncurrentTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r11.c1 | Non-current assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | kvk-abstr:AssetsNoncurrentTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r12.c0 | Inventories/Current | jenv-bw2-i:Inventories | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r12.c1 | Inventories/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:Inventories | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r13.c0 | Receivables/Current | jenv-bw2-i:Receivables | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r13.c1 | Receivables/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:Receivables | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r14.c0 | Current securities/Current | jenv-bw2-i:SecuritiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r14.c1 | Current securities/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:SecuritiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r15.c0 | Cash and cash equivalents/Current | jenv-bw2-i:CashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r15.c1 | Cash and cash equivalents/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:CashAndCashEquivalents | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r16.c0 | Current assets/Current | jenv-bw2-i:AssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r16.c1 | Current assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:AssetsCurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r17.c0 | Current assets/Current | kvk-abstr:AssetsCurrentTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r17.c1 | Current assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | kvk-abstr:AssetsCurrentTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r18.c0 | Assets/Current | jenv-bw2-i:Assets | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r18.c1 | Assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:Assets | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r19.c0 | Assets/Current | kvk-abstr:AssetsTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r19.c1 | Assets/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | kvk-abstr:AssetsTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r20.c0 | Equity/Current | jenv-bw2-i:Equity | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r20.c1 | Equity/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:Equity | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r21.c0 | Provisions/Current | jenv-bw2-i:Provisions | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r21.c1 | Provisions/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:Provisions | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r22.c0 | Non-current liabilities/Current | jenv-bw2-i:LiabilitiesNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r22.c1 | Non-current liabilities/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:LiabilitiesNoncurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r23.c0 | Current liabilities/Current | jenv-bw2-i:LiabilitiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r23.c1 | Current liabilities/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:LiabilitiesCurrent | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r24.c0 | Equity and liabilities/Current | jenv-bw2-i:EquityAndLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r24.c1 | Equity and liabilities/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | jenv-bw2-i:EquityAndLiabilities | nl-types:monetaryNoDecimals20ItemType | instant | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r25.c0 | Equity and liabilities/Current | kvk-abstr:EquityAndLiabilitiesTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r25.c1 | Equity and liabilities/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | kvk-abstr:EquityAndLiabilitiesTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r26.c0 | Segment reporting, balance, line items [title]/Current | ocw-abstr:BalanceSegmentReportingLineItemsTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |
| r26.c1 | Segment reporting, balance, line items [title]/ocw-table_BalanceSegmentReporting-x.1.1.1.1 | ocw-abstr:BalanceSegmentReportingLineItemsTitle | xbrli:stringItemType | duration | jenv-bw2-dm:SeparateMember | ocw-dm:ActualsMember | xs:date('2020-12-31') |