| De aangeschafte en in eigen beheer vervaardigde vastgoedbeleggingen. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Einlagen in Immobilieninvestitionen | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Additions to investment properties | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Investissements dans des immeubles de placement | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Investeringen in vastgoedbeleggingen | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Investitionen | de | http://www.xbrl.org/2009/role/negatedTerseLabel | http://www.xbrl.org/2003/role/link |
| Additions | en | http://www.xbrl.org/2009/role/negatedTerseLabel | http://www.xbrl.org/2003/role/link |
| Investissements | fr | http://www.xbrl.org/2009/role/negatedTerseLabel | http://www.xbrl.org/2003/role/link |
| Investeringen | nl | http://www.xbrl.org/2009/role/negatedTerseLabel | http://www.xbrl.org/2003/role/link |
| Investitionen | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Additions | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Investissements | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Investeringen | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Gesamtbetrag der einlagen in Immobilieninvestitionen | de | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total of additions | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total des investissements | fr | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Totaal van investeringen | nl | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |