| Standard label: | Financing Receivable, before Allowance for Credit Loss and Fee |
| Name: | us-gaap:FinancingReceivableBeforeAllowanceForCreditLossAndFee |
| Documentation: | Amount, before allowance for credit loss and fee, of financing receivable. Excludes financing receivable covered under loss sharing agreement. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:FinancingReceivableBeforeAllowanceForCreditLossAndFee |
| Label | Role | Language |
| Financing Receivable, before Allowance for Credit Loss and Fee | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 310 10 45 2 | http://www.xbrl.org/2009/role/commonPracticeRef | 310 |
| FASB Accounting Standards Codification 326 20 50 5 (b) | http://www.xbrl.org/2003/role/disclosureRef | 326 |
| FASB Accounting Standards Codification 942 210 S99 1 (SX 210.9-03(7)) | http://www.xbrl.org/2009/role/commonPracticeRef | 942 |