| Income statement of commercial business of corporation (charity) / services of a body governed by public law with commercial character (utilities) [table] | de | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Tabelle | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Gewinn- und Verlustrechnung für wirtschaftlichen Geschäftsbetrieb / Betrieb gewerblicher Art [Tabelle] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Income statement of commercial business of corporation (charity) / services of a body governed by public law with commercial character (utilities) [table] | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Table consisting of primary dimension carrying amounts and multiple secondary dimensions | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Table | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |