| Standard label: | Loss Contingency, Range of Possible Loss, Portion Not Accrued |
| Name: | us-gaap:LossContingencyRangeOfPossibleLossPortionNotAccrued |
| Documentation: | The difference between the maximum amount of estimated loss and the amount recorded 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:LossContingencyRangeOfPossibleLossPortionNotAccrued |
| Label | Role | Language |
| Loss Contingency, Range of Possible Loss, Portion Not Accrued | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 450 20 05 5 | http://fasb.org/us-gaap/role/ref/legacyRef | 450 |