| Standard label: | Securities for Reverse Repurchase Agreements |
| Name: | us-gaap:SecuritiesForReverseRepurchaseAgreements |
| Documentation: | The carrying value of securities purchased to be resold in reverse repurchase transactions as of the balance sheet date. |
| 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:SecuritiesForReverseRepurchaseAgreements |
| Label | Role | Language |
| Securities for Reverse Repurchase Agreements | 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)(2)(i)) | http://fasb.org/us-gaap/role/ref/legacyRef | 235 |