| Standard label: | Equity Method Investment, Difference Between Carrying Amount and Underlying Equity |
| Name: | us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity |
| Documentation: | Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | As Of (instant) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity |
| Label | Role | Language |
| Equity Method Investment, Difference Between Carrying Amount and Underlying Equity | http://www.xbrl.org/2003/role/label | en-US |
| Equity Method Investment, Difference Between Carrying Amount and Underlying Equity, Total | http://www.xbrl.org/2003/role/totalLabel | en-US |
| Reference | Role | Topic |
| FASB Accounting Standards Codification 323 10 50 3 (a)(3) | http://fasb.org/us-gaap/role/ref/legacyRef | 323 |