| De overboekingen tussen de verschillende categorieën van de materiële vaste activa. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Übertragungen von Sachanlagen | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Transfers of property, plant and equipment | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Transferts de biens immobiliers, installations et équipements | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Overboekingen van materiële vaste activa | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Übertragungen | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Transfers | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Transferts | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Overboekingen | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |