| Standard label: | Maturity 30 to 90 Days [Member] |
| Name: | us-gaap:Maturity30To90DaysMember |
| Documentation: | Maturity period that is more than 29 days but fewer than 91 days from the reporting date for repurchase agreements and similar transactions, for example, but not limited to, securities lending arrangements. |
| 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:Maturity30To90DaysMember |
| Label | Role | Language |
| Maturity 30 to 90 Days [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 235 10 S99 1 (SX 210.4-08.(m)(1)(i)(A)) | http://fasb.org/us-gaap/role/ref/legacyRef | 235 |