| Immaterielles Anlagevermögen: Aufschlüsselung [Titel] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Intangible assets: Breakdown [title] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Immobilisations incorporelles : Ventilation [titre] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Immateriële vaste activa: Uitsplitsing [titel] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Immaterielles Anlagevermögen: Aufschlüsselung | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Intangible assets: Breakdown | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Immobilisations incorporelles : Ventilation | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Immateriële vaste activa: Uitsplitsing | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Immaterielles Anlagevermögen: Aufschlüsselung | de | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Intangible assets: Breakdown | en | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Immobilisations incorporelles : Ventilation | fr | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Immateriële vaste activa: Uitsplitsing | nl | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |