| Gewinn je Aktie: Aufschlüsselung [Titel] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Earnings per share: Breakdown [title] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Bénéfice par action: Ventilation [titre] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Winst per aandeel: Uitsplitsing [titel] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Gewinn je Aktie: Aufschlüsselung | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Earnings per share: Breakdown | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Bénéfice par action: Ventilation | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Winst per aandeel: Uitsplitsing | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Gewinn je Aktie: Aufschlüsselung | de | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Earnings per share: Breakdown | en | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Bénéfice par action: Ventilation | fr | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |
| Winst per aandeel: Uitsplitsing | nl | http://www.xbrl.org/2008/role/terseLabel | http://www.xbrl.org/2008/role/link |