| Standard label: | Derivative, Description of Objective |
| Name: | us-gaap:DerivativeDescriptionOfObjective |
| Documentation: | Description of the reasons for holding or issuing the derivative instrument. Includes discussion of the objective for holding the instrument, the context needed to understand that objective, and the strategy for achieving the objective. |
| 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:DerivativeDescriptionOfObjective |
| Label | Role | Language |
| Derivative, Description of Objective | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 815 10 50 1B | http://fasb.org/us-gaap/role/ref/legacyRef | 815 |
| FASB Accounting Standards Codification 815 10 50 1A | http://fasb.org/us-gaap/role/ref/legacyRef | 815 |
| FASB Accounting Standards Codification 815 10 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 815 |