| De mutaties van woongelegenheden onder voorwaarden. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Mutations verkaufte Wohneinheiten unter Bedingungen | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Movements housing facilities were sold under conditions | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Mouvements logements vendus sous conditions | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Mutaties verkochte woongelegenheden onder voorwaarden | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Gesamtbetrag der Mutationen wahrend der Periode | de | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total of movements during the period | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total des mouvements pendant la periode | fr | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Totaal van mutaties gedurende de periode | nl | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |