| Standard label: | Foreign Currency Transaction Gain (Loss), Unrealized | 
| Name: | us-gaap:ForeignCurrencyTransactionGainLossUnrealized | 
| Documentation: | Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement. | 
| 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:ForeignCurrencyTransactionGainLossUnrealized | 
| Label | Role | Language | 
| Foreign Currency Transaction Gain (Loss), Unrealized | http://www.xbrl.org/2003/role/label | en-US | 
| Reference | Role | Topic | 
| FASB Accounting Standards Codification 230 10 45 28 | http://fasb.org/us-gaap/role/ref/legacyRef | 230 | 
| FASB Accounting Standards Codification 830 20 45 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 830 | 
| FASB Accounting Standards Codification 830 20 50 1 | http://fasb.org/us-gaap/role/ref/legacyRef | 830 | 
| FASB Accounting Standards Codification 830 20 45 2 | http://fasb.org/us-gaap/role/ref/legacyRef | 830 | 
| Part Of Roll Up: | 
| us-gaap:ForeignCurrencyTransactionGainLossBeforeTax | 
| us-gaap:AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities |