| Verbunderfolgsermittlung | de | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| davon Personalaufwand - verbundene Unternehmen | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Personalaufwand (GKV), davon Personalaufwand - verbundene Unternehmen | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| of which personnel expenses - affiliated companies | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Personnel expenses (TC) of which personnel expenses - affiliated companies | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |