| Name | nt.isInfo.materialExtraordinaryItems |
|---|---|
| Namespace | http://www.xbrl.de/taxonomies/de-gaap-ci-2020-04-01 |
| Prefix | de-gaap-ci |
| Data type | xbrli:stringItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Erläuterung außerordentliche Erträge und Aufwendungen, wenn bedeutend | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Einzelabschluss: § 277 Abs. 4 S. 2 HGB a.F. ; Konzernabschluss: §§ 298 Abs. 1 HGB | de | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Explanation of extraordinary income and expense, if material | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Name | HGB a.F. | http://www.xbrl.org/2003/role/reference |
| Paragraph | 276 a.F. | http://www.xbrl.org/2003/role/reference |
| Clause | 2 | http://www.xbrl.org/2003/role/reference |
| Name | HGB | http://www.xbrl.org/2003/role/reference |
| Paragraph | 298 | http://www.xbrl.org/2003/role/reference |
| Subparagraph | 1 | http://www.xbrl.org/2003/role/reference |
| ValidThrough | 2015-12-31 | http://www.xbrl.org/2003/role/reference |
| Name | HGB a.F. | http://www.xbrl.org/2003/role/reference |
| Paragraph | 277 a.F. | http://www.xbrl.org/2003/role/reference |
| Subparagraph | 4 | http://www.xbrl.org/2003/role/reference |
| Clause | 2 | http://www.xbrl.org/2003/role/reference |
| Name | Relation Type | Role | |
|---|---|---|---|
de-gaap-ci:nt.isInfo | parent-child | http://www.xbrl.de/taxonomies/de-gaap-ci/role/notes |