| Address | Label | Metrics | Data Type | Period Type | jenv-bw2-dim:FinancialStatementsTypeAxis | period |
|---|---|---|---|---|---|---|
| r0.c0 | Consolidation with multiple authorities/Current | ocw-i:ConsolidationWithMultipleAuthorities | xbrli:booleanItemType | duration | jenv-bw2-dm:ConsolidatedMember | xs:date('2020-01-01')/xs:date('2020-12-31') |
| r1.c0 | Group head/Current | ocw-i:GroupHead | xbrli:booleanItemType | duration | jenv-bw2-dm:ConsolidatedMember | xs:date('2020-01-01')/xs:date('2020-12-31') |