| r0.c0 | Financial assets/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | venj-bw2-i:FinancialAssets | nl-types:monetaryNoDecimalsItemType | instant | ocw-dm:ActualsMember | xs:date('2016-12-31') | venj-bw2-dm:SeparateMember |
| r1.c0 | ocw-table_NotesFinancialAssetsMovement-y.1/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | | | | ocw-dm:ActualsMember | xs:date('2016-12-31') | venj-bw2-dm:SeparateMember |
| r2.c0 | Additions of financial assets/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | venj-bw2-i:FinancialAssetsAdditions | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | xs:date('2017-01-01')/xs:date('2017-12-31') | venj-bw2-dm:SeparateMember |
| r3.c0 | Disposals of financial assets/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | venj-bw2-i:FinancialAssetsDisposals | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | xs:date('2017-01-01')/xs:date('2017-12-31') | venj-bw2-dm:SeparateMember |
| r4.c0 | Financial assets, changes in value/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | ocw-i:FinancialAssetsChangesInValue | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | xs:date('2017-01-01')/xs:date('2017-12-31') | venj-bw2-dm:SeparateMember |
| r5.c0 | Share in result of participating interests as part of financial assets/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | rj-i:FinancialAssetsShareInResultParticipatingInterests | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | xs:date('2017-01-01')/xs:date('2017-12-31') | venj-bw2-dm:SeparateMember |
| r6.c0 | ocw-table_NotesFinancialAssetsMovement-y.2/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | | | | ocw-dm:ActualsMember | xs:date('2017-01-01')/xs:date('2017-12-31') | venj-bw2-dm:SeparateMember |
| r7.c0 | Financial assets/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | venj-bw2-i:FinancialAssets | nl-types:monetaryNoDecimalsItemType | instant | ocw-dm:ActualsMember | xs:date('2017-12-31') | venj-bw2-dm:SeparateMember |
| r8.c0 | ocw-table_NotesFinancialAssetsMovement-y.3/ocw-table_NotesFinancialAssetsMovement-x.1.1.1 | | | | ocw-dm:ActualsMember | xs:date('2017-12-31') | venj-bw2-dm:SeparateMember |