| Standard label: | Gain (Loss) on Disposition of Assets |
| Name: | us-gaap:GainLossOnDispositionOfAssets1 |
| Documentation: | Amount of gain (loss) on sale or disposal of assets, including but not limited to property plant and equipment, intangible assets and equity in securities of subsidiaries or equity method investee. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:GainLossOnDispositionOfAssets1 |
| Label | Role | Language |
| Gain (Loss) on Disposition of Assets | http://www.xbrl.org/2003/role/label | en-US |
| Gain (Loss) on Disposition of Assets, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 28 (b) | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |
| Part Of Roll Up: |
| us-gaap:OperatingExpenses |