| De overige wijzigingen in de boekwaarde van de negatieve goodwill. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Sonstige Änderungen des Buchwerts des negativen Goodwill | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Other changes in book value of negative goodwill | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Autres changements dans la valeur comptable du goodwill négatif | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Overige wijzigingen in de boekwaarde van negatieve goodwill | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Sonstige Mutationen | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Other movements | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Autres mouvements | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Overige mutaties | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |