| De netto-omzet per segment ten behoeve van de gesegmenteerde informatie. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Netto-Umsatz nach Segment | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Net revenue by segment | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Chiffre d'affaires net par segment | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Netto-omzet per segment | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Netto-Umsatz | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Net revenue | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Chiffre d'affaires net | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Netto-omzet | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |