| Standard label: | Cash Flows Between Transferor and Transferee, Servicing Fees |
| Name: | us-gaap:CashFlowsBetweenTransfereeAndTransferorServicingFees |
| Documentation: | Cash Flows between a transferee and a transferor attributable to servicing fees related to a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets). |
| 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:CashFlowsBetweenTransfereeAndTransferorServicingFees |
| Label | Role | Language |
| Cash Flows Between Transferor and Transferee, Servicing Fees | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 860 20 50 3 (d)(4) | http://www.xbrl.org/2003/role/disclosureRef | 860 |