| Standard label: | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Abandonment [Member] |
| Name: | us-gaap:DisposalGroupDisposedOfByMeansOtherThanSaleNotDiscontinuedOperationsAbandonmentMember |
| Documentation: | Disposal group that is disposed of by means of abandonment. Excludes disposals classified as discontinued operations. |
| 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:DisposalGroupDisposedOfByMeansOtherThanSaleNotDiscontinuedOperationsAbandonmentMember |
| Label | Role | Language |
| Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Abandonment [Member] | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 360 10 45 5 | http://fasb.org/us-gaap/role/ref/legacyRef | 360 |
| FASB Accounting Standards Codification 360 10 45 15 | http://fasb.org/us-gaap/role/ref/legacyRef | 360 |