| Standard label: | Collateralized Financings |
| Name: | us-gaap:CollateralizedFinancings |
| Documentation: | The value of the collateral (typically cash) that the entity receives in a financing transaction in exchange for securities lent. This item represents a liability in the financial statements of the lender of the securities. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CollateralizedFinancings |
| Label | Role | Language |
| Collateralized Financings | http://www.xbrl.org/2003/role/label | en-US |
| Collateralized Financings, 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)(1)(i)(A)(ii)) | http://fasb.org/us-gaap/role/ref/legacyRef | 235 |
| FASB Accounting Standards Codification 860 30 25 8 | http://fasb.org/us-gaap/role/ref/legacyRef | 860 |