| Standard label: | Income Tax Expense (Benefit) |
| Name: | us-gaap:IncomeTaxExpenseBenefit |
| Documentation: | Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing 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:IncomeTaxExpenseBenefit |
| Label | Role | Language |
| Income Tax Expense (Benefit) | http://www.xbrl.org/2003/role/label | en-US |
| Income Tax Expense (Benefit), Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 235 10 S99 1 (SX 210.4-08(h)) | http://www.xbrl.org/2003/role/disclosureRef | 235 |
| FASB Accounting Standards Codification 280 10 50 22 (h) | http://www.xbrl.org/2003/role/disclosureRef | 280 |
| FASB Accounting Standards Codification 740 20 45 2 (a) | http://www.xbrl.org/2003/role/disclosureRef | 740 |
| Part Of Roll Up: |
| us-gaap:IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest |
| us-gaap:IncomeTaxExpenseBenefitIntraperiodTaxAllocation |