| Standard label: | Reporting Unit, Amount of Fair Value in Excess of Carrying Amount |
| Name: | us-gaap:ReportingUnitAmountOfFairValueInExcessOfCarryingAmount |
| Documentation: | Amount of fair value of reporting unit in excess of carrying amount. |
| 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:ReportingUnitAmountOfFairValueInExcessOfCarryingAmount |
| Label | Role | Language |
| Reporting Unit, Amount of Fair Value in Excess of Carrying Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |