| Standard label: | Federal Reserve Bank Stock |
| Name: | us-gaap:FederalReserveBankStock |
| Documentation: | Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). |
| 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:FederalReserveBankStock |
| Label | Role | Language |
| Federal Reserve Bank Stock | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 942 325 45 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 942 |