| Standard label: | Loss Contingency, Estimate of Possible Loss |
| Name: | us-gaap:LossContingencyEstimateOfPossibleLoss |
| Documentation: | Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:LossContingencyEstimateOfPossibleLoss |
| Label | Role | Language |
| Loss Contingency, Estimate of Possible Loss | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 450 20 50 4 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 450 20 50 9 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |
| FASB Accounting Standards Codification 460 10 50 2 | http://www.xbrl.org/2003/role/disclosureRef | 460 |