| De aflossingen van de langlopende schulden gedurende de periode. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Rückzahlungen am langfristige Verbindlichkeiten | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Repayments of non-current liabilities | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Remboursements de passif non exigible | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Aflossingen van langlopende schulden | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Rückzahlungen | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Repayments | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Remboursements | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Aflossingen | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |