| Standard label: | Net Credit Loss on Loans Managed or Securitized or Asset-backed Financing Arrangement |
| Name: | us-gaap:NetCreditLossOnLoansManagedOrSecuritizedOrAssetbackedFinancingArrangement |
| Documentation: | Amount of credit loss after recoveries for transferred financial assets that continue to be recognized in the statement of financial position. |
| 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:NetCreditLossOnLoansManagedOrSecuritizedOrAssetbackedFinancingArrangement |
| Label | Role | Language |
| Net Credit Loss on Loans Managed or Securitized or Asset-backed Financing Arrangement | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 860 20 50 4 (e)(5) | http://fasb.org/us-gaap/role/ref/legacyRef | 860 |