| Standard label: | Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount |
| Name: | us-gaap:IncomeTaxReconciliationTaxSettlementsDomestic |
| Documentation: | Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to domestic income tax settlement. |
| 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:IncomeTaxReconciliationTaxSettlementsDomestic |
| Label | Role | Language |
| Effective Income Tax Rate Reconciliation, Tax Settlement, Domestic, Amount | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 50 12 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| FASB Accounting Standards Codification 740 10 50 13 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| Part Of Roll Up: |
| us-gaap:IncomeTaxReconciliationTaxSettlements |