| Name | nt.genInfo.FinancialInstrFinAssMas.MarketValue |
|---|---|
| Namespace | http://www.xbrl.de/taxonomies/de-gaap-ci-2021-04-14 |
| Prefix | de-gaap-ci |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | debit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Beizulegender Zeitwert des Finanzinstruments oder der Gruppierung | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Beizulegender Zeitwert | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Fair value of financial instrument or group of assets | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Fair value | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| ValidSince | 2003-12-31 | http://www.xbrl.org/2003/role/reference |
| Name | HGB | http://www.xbrl.org/2003/role/reference |
| Paragraph | 314 | http://www.xbrl.org/2003/role/reference |
| Subparagraph | 1 | http://www.xbrl.org/2003/role/reference |
| Number | 10 | http://www.xbrl.org/2003/role/reference |
| Name | HGB | http://www.xbrl.org/2003/role/reference |
| Paragraph | 285 | http://www.xbrl.org/2003/role/reference |
| Number | 18 | http://www.xbrl.org/2003/role/reference |