| De criteria voor de verwerking van de brutomarge in de winst-en-verliesrekening. | nl | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Grundlage der Brutto-Betriebsergebnis | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Policy of gross operating result | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Principe du résultat brut d'exploitation | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Grondslag van bruto-bedrijfsresultaat | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Grundlage der bruttomarge | de | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Policy of gross margin | en | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Principe du marge brute | fr | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |
| Grondslag van brutomarge | nl | http://www.xbrl.org/2003/role/verboseLabel | http://www.xbrl.org/2003/role/link |