| Standard label: | Goodwill and Intangible Asset Impairment |
| Name: | us-gaap:GoodwillAndIntangibleAssetImpairment |
| Documentation: | Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:GoodwillAndIntangibleAssetImpairment |
| Label | Role | Language |
| Goodwill and Intangible Asset Impairment | http://www.xbrl.org/2003/role/label | en-US |
| Goodwill and Intangible Asset Impairment, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| Part Of Roll Up: |
| us-gaap:AssetImpairmentCharges |