| andere Gewinnrücklagen, davon Mehrerwerbskosten für eigene Anteile (von freien Rücklagen offen abzusetzen) | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| davon Mehrerwerbskosten für eigene Anteile | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Other revenue reserves, of which additional purchase costs for treasury shares (to be deducted from distributable reserves on the face of the balance sheet) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Additional purchase costs for treasury shares (to be deducted from distributable reserves on the face of the balance sheet) | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |