| Standard label: | Securities Borrowed, Allowance for Credit Loss [Table] |
| Name: | us-gaap:SecuritiesBorrowedAllowanceForCreditLossTable |
| Documentation: | Disclosure of information about allowance for credit loss on securities borrowed. |
| Object type: | cm:Table |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SecuritiesBorrowedAllowanceForCreditLossTable |
| Label | Role | Language |
| Securities Borrowed, Allowance for Credit Loss [Table] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 326 20 50 13 | http://www.xbrl.org/2009/role/commonPracticeRef | 326 |