| Standard label: | Restructuring, Impairment, and Other Activities Disclosure [Text Block] |
| Name: | us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock |
| Documentation: | The entire disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. |
| Object type: | cm:Level1TextBlock |
| Data type: | Text Block (HTML) (nonnum:textBlockItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:RestructuringImpairmentAndOtherActivitiesDisclosureTextBlock |
| Examples of this text block disclosure: | RestructuringImpairmentAndOtherActivitiesDisclosure |
| Label | Role | Language |
| Restructuring, Impairment, and Other Activities Disclosure [Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |