| Name | net_all |
|---|---|
| Namespace | http://www.xbrl.de/taxonomies/de-gaap-ci-2020-04-01 |
| Prefix | de-gaap-ci |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Buchwert zum Ende der Periode (netto) | de | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Buchwert zum Ende der Periode | de | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Carrying amount at end of period (net) | en | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Carrying amount at end of period | en | http://www.xbrl.org/2003/role/terseLabel | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| ValidThrough | 2017-12-30 | http://www.xbrl.org/2003/role/reference |
| 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 |