| Standard label: | Gain (Loss) on Disposition of Business |
| Name: | us-gaap:GainLossOnSaleOfBusiness |
| Documentation: | Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant. |
| 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:GainLossOnSaleOfBusiness |
| Label | Role | Language |
| Gain (Loss) on Disposition of Business | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 230 10 45 28 (b) | http://www.xbrl.org/2009/role/commonPracticeRef | 230 |
| FASB Accounting Standards Codification 810 10 50 1B (a) | http://www.xbrl.org/2003/role/disclosureRef | 810 |
| Part Of Roll Up: |
| us-gaap:GainLossOnDispositionOfAssets1 |