| Balanswaarde van de voorraad gereed product (ook halffabrikaten bestemd voor derden) | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Stock products | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Gereed product | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Stock products, ending of balance | en | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Gereed product, begin van de periode | nl | http://www.xbrl.org/2003/role/periodEndLabel | http://www.xbrl.org/2003/role/link |
| Stock products, ending of balance | en | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |
| Gereed product, einde van de periode | nl | http://www.xbrl.org/2003/role/periodStartLabel | http://www.xbrl.org/2003/role/link |