| Standard label: | Share-based Payment Arrangement, Expense, Tax Benefit |
| Name: | us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense |
| Documentation: | Amount of tax benefit for recognition of expense of award under share-based payment arrangement. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense |
| Label | Role | Language |
| Share-based Payment Arrangement, Expense, Tax Benefit | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 718 10 50 2 (h)(1)(i) | http://fasb.org/us-gaap/role/ref/legacyRef | 718 |
| Part Of Roll Up: |
| us-gaap:IncomeTaxExpenseBenefit |