| Standard label: | Securities Borrowed, Repayment through Operation or Sale of Collateral, Collateral [Extensible List] |
| Name: | us-gaap:SecuritiesBorrowedRepaymentThroughOperationOrSaleOfCollateralCollateralExtensibleList |
| Documentation: | Indicates type of collateral for securities borrowed for which repayment is expected through operation or sale of collateral and borrower is experiencing financial difficulty. |
| Object type: | cm:Concept |
| Data type: | srt-types:extensibleListItemType |
| Period type: | As Of (instant) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SecuritiesBorrowedRepaymentThroughOperationOrSaleOfCollateralCollateralExtensibleList |
| Label | Role | Language |
| Securities Borrowed, Repayment through Operation or Sale of Collateral, Collateral [Extensible List] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 326 20 50 20 | http://www.xbrl.org/2003/role/disclosureRef | 326 |