| Standard label: | Securities Purchased under Agreements to Resell, Measurement Difference Description |
| Name: | us-gaap:SecuritiesPurchasedUnderAgreementsToResellMeasurementDifferenceDescription |
| Documentation: | Description of measurement difference between recognized amounts and resulting measurement differences for securities purchased under agreement to resell. |
| 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:SecuritiesPurchasedUnderAgreementsToResellMeasurementDifferenceDescription |
| Label | Role | Language |
| Securities Purchased under Agreements to Resell, Measurement Difference Description | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 210 20 55 6 | http://fasb.org/us-gaap/role/ref/legacyRef | 210 |