| Standard label: | Loss Contingency, Period of Occurrence |
| Name: | us-gaap:LossContingencyPeriodOfOccurrence |
| Documentation: | States when the existing condition, situation, or set of circumstances involving uncertainty occurred. |
| 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:LossContingencyPeriodOfOccurrence |
| Label | Role | Language |
| Loss Contingency, Period of Occurrence | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 450 20 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 4 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 9 (a) | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |