| Standard label: | Deferred Tax Liabilities, Investments |
| Name: | us-gaap:DeferredTaxLiabilitiesInvestments |
| Documentation: | Amount of deferred tax liability attributable to taxable temporary differences from investments (excludes investments in subsidiaries and equity method investments). |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Credit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:DeferredTaxLiabilitiesInvestments |
| Label | Role | Language |
| Deferred Tax Liabilities, Investments | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |
| Part Of Roll Up: |
| us-gaap:DeferredIncomeTaxLiabilities |