| De boekwaarden van de activa per segment ten behoeve van de gesegmenteerde informatie. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Aktiva nach Segmenten | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Assets by segment | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Activité par segment | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Activa per segment | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Buchwert der Aktiva | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Book value of assets | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Valeur comptable de l'actif | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Boekwaarde van activa | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |