| De minimale leasebetalingen in het kader van de operationele leases en de contante waarde van de leasebetalingen. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Mindestleasingzahlungen für operatives Leasing | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Minimal lease payments of operating leases | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Paiements minimaux de leasing des leasings opérationnels | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Minimale lease betalingen van operationele leases | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Mindestleasingzahlungen | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Minimal lease payments | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Paiements minimaux du leasing | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Minimale lease betalingen | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Gesamtbetrag der Mindestleasingzahlungen für operatives Leasing | de | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total of minimal lease payments of operating leases | en | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Total des paiements minimaux de leasing des leasings opérationnels | fr | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Totaal van minimale lease betalingen van operationele leases | nl | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |