| Standard label: | Resale Agreements, Additional Collateral Requirements for Securities or Assets to be Resold |
| Name: | us-gaap:ResaleAgreementsAdditionalCollateralRequirementsForSecuritiesOrAssetsToBeResold |
| Documentation: | This describes the policy to protect against credit exposure during resale agreements. |
| 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:ResaleAgreementsAdditionalCollateralRequirementsForSecuritiesOrAssetsToBeResold |
| Label | Role | Language |
| Resale Agreements, Additional Collateral Requirements for Securities or Assets to be Resold | 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 |