| Standard label: | Asset-backed Securities, Securitized Loans and Receivables [Member] |
| Name: | us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember |
| Documentation: | Securities that are primarily serviced with cash flows derived financial assets that are being securitized for example, but not limited to, credit card receivables, car loans, recreational vehicle loans, and mobile home loans. Excludes mortgage-backed securities. |
| Object type: | cm:Member |
| Data type: | [Member] (nonnum:domainItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:AssetBackedSecuritiesSecuritizedLoansAndReceivablesMember |
| Label | Role | Language |
| Asset-backed Securities, Securitized Loans and Receivables [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 320 10 50 5 | http://fasb.org/us-gaap/role/ref/legacyRef | 320 |
| FASB Accounting Standards Codification 715 20 50 1 (d)(ii) | http://www.xbrl.org/2009/role/commonPracticeRef | 715 |