| Standard label: | Discontinued Operations [Member] |
| Name: | us-gaap:SegmentDiscontinuedOperationsMember |
| Documentation: | Component or group of components disposed of or classified as held-for-sale and representing a strategic shift that has or will have a major effect on operations and financial results. Includes a business or nonprofit activity on acquisition classified as held-for-sale. |
| Object type: | cm:Member |
| Data type: | [Member] (nonnum:domainItemType) |
| Period type: | For Period (duration) |
| Balance type: | (no balance type) |
| Abstract: | true |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:SegmentDiscontinuedOperationsMember |
| Label | Role | Language |
| Discontinued Operations [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 205 20 45 1D | http://fasb.org/us-gaap/role/ref/legacyRef | 205 |
| FASB Accounting Standards Codification 205 20 45 1C | http://fasb.org/us-gaap/role/ref/legacyRef | 205 |
| FASB Accounting Standards Codification 205 20 45 1A | http://fasb.org/us-gaap/role/ref/legacyRef | 205 |
| FASB Accounting Standards Codification 205 20 45 1B | http://fasb.org/us-gaap/role/ref/legacyRef | 205 |