| Soziale Immobilien in Verwertung [Mitglied] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Social real estate in exploitation [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Immeuble social en exploitation [membre] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Sociaal vastgoed in exploitatie [member] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Soziale Immobilien in Verwertung | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Social real estate in exploitation | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Immeuble social en exploitation | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Sociaal vastgoed in exploitatie | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |