| Standard label: | Discussion of Objectives for Using Credit Risk Derivative Instruments |
| Name: | us-gaap:DiscussionOfObjectivesForUsingCreditRiskDerivativeInstruments |
| Documentation: | Description of the reasons for holding or issuing credit risk derivative instruments, including, but not limited to, objectives, context needed to understand the objectives, and the strategies for achieving the objectives. |
| 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:DiscussionOfObjectivesForUsingCreditRiskDerivativeInstruments |
| Label | Role | Language |
| Discussion of Objectives for Using Credit Risk Derivative Instruments | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 815 10 50 4K (a)(2) | http://fasb.org/us-gaap/role/ref/legacyRef | 815 |
| 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 |
| FASB Accounting Standards Codification 815 10 50 5 | http://fasb.org/us-gaap/role/ref/legacyRef | 815 |