| Standard label: | Communications, Information Technology and Occupancy |
| Name: | us-gaap:CommunicationsInformationTechnologyAndOccupancy |
| Documentation: | The aggregate amount of communications, data processing and occupancy expenses. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CommunicationsInformationTechnologyAndOccupancy |
| Label | Role | Language |
| Communications, Information Technology and Occupancy | http://www.xbrl.org/2003/role/label | en-US |
| Communications, Information Technology and Occupancy, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 220 10 S99 2 (SX 210.5-03.6) | http://fasb.org/us-gaap/role/ref/legacyRef | 220 |
| FASB Accounting Standards Codification 942 220 S99 1 (SX 210.9-04.14) | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |
| Part Of Roll Up: |
| us-gaap:GeneralAndAdministrativeExpense |