| Standard label: | Income Tax Examination, Increase (Decrease) in Liability from Prior Year |
| Name: | us-gaap:IncomeTaxExaminationIncreaseDecreaseInLiabilityFromPriorYear |
| Documentation: | The amount the liability recorded for the income tax examination increased or decreased in the current year/accounting period. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:IncomeTaxExaminationIncreaseDecreaseInLiabilityFromPriorYear |
| Label | Role | Language |
| Income Tax Examination, Increase (Decrease) in Liability from Prior Year | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 50 15A | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |