| sonstige Verbindlichkeiten, davon Treuhandverbindlichkeiten | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| davon Treuhandverbindlichkeiten | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Posten für die Kreditwürdigkeitsprüfung (ELBA) | de | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Other liabilities, of which from assets held in trust | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| of which from assets held in trust | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |