| Name | bs.contingLiab.notes.pension |
|---|---|
| Namespace | http://www.xbrl.de/taxonomies/de-gaap-ci-2020-04-01 |
| Prefix | de-gaap-ci |
| Data type | xbrli:monetaryItemType |
| Period type | instant |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Verpflichtungen aus der Begebung und Übertragung von Wechseln, davon betreffend Altersversorgung | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| davon betreffend Altersversorgung | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Contingent liabilities from the issuance and transfer of bills, of which concerning post-employment benefits | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| of which concerning post-employment benefits | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| legalFormEU | true | http://www.xbrl.org/2003/role/mandatoryDisclosureRef |
| legalFormKSt | true | http://www.xbrl.org/2003/role/mandatoryDisclosureRef |
| legalFormPG | true | http://www.xbrl.org/2003/role/mandatoryDisclosureRef |
| typeOperatingResult | neutral | http://www.xbrl.org/2003/role/mandatoryDisclosureRef |