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| r0.c1 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Job role engagement start date within the year | ocw-wnt-i:JobRoleEngagementStartDateWithinTheYear | xbrli:gMonthDayItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c2 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Job role engagement end date within the year | ocw-wnt-i:JobRoleEngagementEndDateWithinTheYear | xbrli:gMonthDayItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c3 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Worksize within the year | ocw-wnt-i:WorkSizeWithinTheYear | ocw-types:decimalGt0_025Le2Fd2ItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c4 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Remuneration plus taxable expenses within the year | ocw-wnt-i:RemunerationPlusTaxableExpensesWithinTheYear | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c5 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Provison rewards payable within the year | ocw-wnt-i:ProvisionRewardsWithinTheYear | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c6 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Total remunerations within the year | ocw-wnt-i:RemunerationsTotalWithinTheYear | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c7 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Individually applicable threshold amount WNT within the year | ocw-wnt-i:IndividuallyApplicableThresholdAmountWNTWithinTheYear | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c8 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Explanation exceeding remuneration maximum | ocw-wnt-i:ExplanationExceedingRemunerationMaximum | nl-types:string100000ItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c9 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Job role engagement start date within previous year | ocw-wnt-i:JobRoleEngagementStartDateWithinPreviousYear | xbrli:gMonthDayItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c10 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Job role engagement end date within previous year | ocw-wnt-i:JobRoleEngagementEndDateWithinPreviousYear | xbrli:gMonthDayItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c11 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Worksize within previous year | ocw-wnt-i:WorkSizeWithinPreviousYear | xbrli:decimalItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c12 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Remuneration plus taxable expenses within previous year | ocw-wnt-i:RemunerationPlusTaxableExpensesWithinPreviousYear | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c13 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Provison rewards payable within previous year | ocw-wnt-i:ProvisionRewardsWithinPreviousYear | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c14 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Total remunerations within previous year | ocw-wnt-i:RemunerationsTotalWithinPreviousYear | nl-types:monetaryNoDecimalsItemType | duration | ocw-dm:ActualsMember | * | N/A | venj-bw2-dm:SeparateMember |
| r0.c15 | ocw-wnt-table_NotesListingRemunerationTopExecutivesAboveNormSpecification-y/Current | | | | N/A | * | xs:date('2017-01-01')/xs:date('2017-12-31') | N/A |