| Standard label: | Underlying, Derivative Volume |
| Name: | us-gaap:UnderlyingDerivativeVolume |
| Documentation: | Specified interest rate, security price, commodity price, foreign exchange rate, index of prices or rates for a derivative contract measured in volume but not the derivative contract itself. |
| Object type: | cm:Concept |
| Data type: | srt-types:perUnitItemType |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:UnderlyingDerivativeVolume |
| Label | Role | Language |
| Underlying, Derivative Volume | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |