| Standard label: | Due to and from Broker-Dealers and Clearing Organizations Disclosure [Text Block] |
| Name: | us-gaap:DueToAndFromBrokerDealersAndClearingOrganizationsDisclosure |
| Documentation: | The entire disclosure for Due to and from Broker-Dealers and Clearing Organizations, including data and tables. This may include amounts receivable from and payable to broker-dealers and clearing organizations, including securities failed to receive, deposits received for securities loaned, amounts payable to clearing organizations related to open transactions, floor brokerage payables and payables for commodities futures accounts liquidating to an equity balance on a broker-dealer's records. |
| Object type: | cm:Level1TextBlock |
| Data type: | Text Block (HTML) (nonnum:textBlockItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DueToAndFromBrokerDealersAndClearingOrganizationsDisclosure |
| Label | Role | Language |
| Due to and from Broker-Dealers and Clearing Organizations Disclosure [Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |