| Standard label: | Long-lived Assets by Geographic Areas [Table Text Block] |
| Name: | us-gaap:LongLivedAssetsByGeographicAreasTableTextBlock |
| Documentation: | Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets. |
| Object type: | cm:Level3TextBlock |
| 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:LongLivedAssetsByGeographicAreasTableTextBlock |
| Examples of this text block disclosure: | GeographicAreasLongLivedAssetsHierarchy |
| Label | Role | Language |
| Long-lived Assets by Geographic Areas [Table Text Block] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 280 10 50 41 b | http://fasb.org/us-gaap/role/ref/legacyRef | 280 |