| Standard label: | Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations |
| Name: | us-gaap:IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems |
| Documentation: | Amount of current tax expense (benefit) and deferred tax expense (benefit) pertaining to income (loss) from continuing operations and income (loss) from discontinued operations. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:IncomeTaxExpenseBenefitContinuingOperationsDiscontinuedOperationsExtraordinaryItems |
| Label | Role | Language |
| Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations | http://www.xbrl.org/2003/role/label | en-US |
| Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 20 45 8 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| Part Of Roll Up: |
| us-gaap:ProfitLoss |