| Standard label: | Business Combination, Consideration Transferred |
| Name: | us-gaap:BusinessCombinationConsiderationTransferred1 |
| Documentation: | Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. |
| 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:BusinessCombinationConsiderationTransferred1 |
| Label | Role | Language |
| Business Combination, Consideration Transferred | http://www.xbrl.org/2003/role/label | en-US |
| Business Combination, Consideration Transferred, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 805 30 50 1 (b) | http://fasb.org/us-gaap/role/ref/legacyRef | 805 |
| FASB Accounting Standards Codification 805 30 30 7 | http://fasb.org/us-gaap/role/ref/legacyRef | 805 |
| FASB Accounting Standards Codification 805 30 30 8 | http://fasb.org/us-gaap/role/ref/legacyRef | 805 |
| Part Of Roll Up: |
| us-gaap:BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1 |