| Standard label: | Income Tax Effects Allocated Directly to Equity |
| Name: | us-gaap:IncomeTaxEffectsAllocatedDirectlyToEquity |
| Documentation: | The sum of the tax effects of all items occurring during the period that have been charged or credited directly to other comprehensive income or to related components of shareholders' equity. |
| 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:IncomeTaxEffectsAllocatedDirectlyToEquity |
| Label | Role | Language |
| Income Tax Effects Allocated Directly to Equity | http://www.xbrl.org/2003/role/label | en-US |
| Income Tax Effects Allocated Directly to Equity, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 740 10 50 10 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| FASB Accounting Standards Codification 740 20 45 11 | http://fasb.org/us-gaap/role/ref/legacyRef | 740 |
| Part Of Roll Up: |
| us-gaap:IncomeTaxExpenseBenefitIntraperiodTaxAllocation |