| Standard label: | Commercial Borrower [Member] |
| Name: | us-gaap:CommercialBorrowerMember |
| Documentation: | Business which borrows funds. |
| 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:CommercialBorrowerMember |
| Label | Role | Language |
| Commercial Borrower [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 326 20 55 12 (a)(1) | http://www.xbrl.org/2003/role/exampleRef | 326 |