| Standard label: | Loss Contingency, Accrual, Current |
| Name: | us-gaap:LossContingencyAccrualCarryingValueCurrent |
| Documentation: | Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LossContingencyAccrualCarryingValueCurrent |
| Label | Role | Language |
| Loss Contingency, Accrual, Current | 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 |
| Part Of Roll Up: |
| us-gaap:LossContingencyAccrualAtCarryingValue |