| Aufwendungen für bezogene Leistungen (GKV), davon von verbundenen Unternehmen | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Verbunderfolgsermittlung | de | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| davon von verbundenen Unternehmen | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Cost of purchased services (TC), of which cost of purchased services, of which from affiliated companies | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| of which from affiliated companies | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |