| Standard label: | Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Other Key Assumption Value |
| Name: | us-gaap:AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesOtherKeyAssumptionValue |
| Documentation: | Assumptions used in measuring fair value on date of securitization, asset-backed financing arrangement, or similar transfer of assets or liabilities that relate to a transferor's continuing involvement. |
| Object type: | cm:Concept |
| Data type: | Text/String (xbrli:stringItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:AssumptionForFairValueOnSecuritizationDateOfInterestsContinuedToBeHeldByTransferorServicingAssetsOrLiabilitiesOtherKeyAssumptionValue |
| Label | Role | Language |
| Fair Value Assumption, Date of Securitization or Asset-backed Financing Arrangement, Transferor's Continuing Involvement, Servicing Assets or Liabilities, Other Key Assumption Value | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 860 20 50 3 (c) | http://fasb.org/us-gaap/role/ref/legacyRef | 860 |