| Standard label: | Payments for (Proceeds from) Previous Acquisition | 
| Name: | us-gaap:PaymentsForProceedsFromPreviousAcquisition | 
| Documentation: | The net cash inflow or outflow associated with the aggregate amount of adjustment to the purchase price of a previous acquisition. | 
| 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:PaymentsForProceedsFromPreviousAcquisition | 
| Label | Role | Language | 
| Payments for (Proceeds from) Previous Acquisition | http://www.xbrl.org/2003/role/label | en-US | 
| Payments for (Proceeds from) Previous Acquisition, Total | http://www.xbrl.org/2003/role/totalLabel | en-US | 
| Reference | Role | Topic | 
| FASB Accounting Standards Codification 235 10 S99 3 (SX 210.12-04(a)) | http://www.xbrl.org/2009/role/commonPracticeRef | 235 | 
| Part Of Roll Up: | 
| us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired |