| Standard label: | Securities Loaned |
| Name: | us-gaap:SecuritiesLoaned |
| Documentation: | Amount, after the effects of master netting arrangements, of securities loaned to entities in exchange for collateral. Includes liabilities not subject to a master netting arrangement and not elected to be offset. |
| 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:SecuritiesLoaned |
| Label | Role | Language |
| Securities Loaned | http://www.xbrl.org/2003/role/label | en-US |
| Securities Loaned, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 20 50 3 (c) | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 210 20 55 10 | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |
| FASB Accounting Standards Codification 860 30 50 1A (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 860 |
| Part Of Roll Up: |
| us-gaap:LiabilitiesCurrent |