| Name | CBKS |
|---|---|
| Namespace | http://xbrl.sec.gov/exch/2022 |
| Prefix | exch |
| Data type | dtr-types:domainItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | None |
| Nillable | True |
| Abstract | True |
| Text | Lang | Role | Container role |
|---|---|---|---|
| COMMERZBANK INTEREST RATE SWAPS - SYSTEMATIC INTERNALISER; FRANKFURT, GERMANY (DE) | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| COMMERZBANK INTEREST RATE SWAPS - SYSTEMATIC INTERNALISER [Member] | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |