| Standard label: | Cash Flows Between Transferor and Transferee, Purchases of Previously Transferred Financial Assets |
| Name: | us-gaap:CashFlowsBetweenTransfereeAndTransferorPurchasesOfPreviouslyTransferredFinancialAssets |
| Documentation: | Cash Flows between a transferor and a transferee attributable to purchases of previously transferred financial assets (or its underlying collateral) 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: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CashFlowsBetweenTransfereeAndTransferorPurchasesOfPreviouslyTransferredFinancialAssets |
| Label | Role | Language |
| Cash Flows Between Transferor and Transferee, Purchases of Previously Transferred Financial Assets | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 860 20 50 3 (d)(3) | http://www.xbrl.org/2003/role/disclosureRef | 860 |