| Marine-, Transport- und Luftfahrtversicherung [Mitglied] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Marine, transport and aviation insurance [member] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Assurance maritime, aviation et transport [membre] | fr | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Zee-, transport- en luchtvaartverzekering [member] | nl | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Marine, Transport und Luftfahrtversicherung | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Marine, transport and aviation insurance | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Assurance maritime, aviation et transport | fr | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Zee-, transport- en luchtvaartverzekering | nl | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |