| wirtschaftlicher Geschäftsbetrieb / Betrieb gewerblicher Art [Dimension] | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Betrieb | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Primäre (werthaltige) Dimension | de | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Commercial business of corporation (charity) / services of a body governed by public law with commercial character (utilities) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Commercial businesses | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Primary dimension (containing amounts) | en | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |