| Standard label: | Collateralized Agreements |
| Name: | us-gaap:CollateralizedAgreements |
| Documentation: | The total of collateralized agreements including securities purchased under agreements to resell (repos), borrowed securities, and secured demand notes. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CollateralizedAgreements |
| Label | Role | Language |
| Collateralized Agreements | http://www.xbrl.org/2003/role/label | en-US |
| Collateralized Agreements, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 235 10 S99 1 (SX 210.4-08.(m)(2)(i)(A)) | http://fasb.org/us-gaap/role/ref/legacyRef | 235 |
| FASB Accounting Standards Codification 860 10 05 16 | http://fasb.org/us-gaap/role/ref/legacyRef | 860 |