| Standard label: | Cost-method Investments, Realized Losses, Excluding Other than Temporary Impairments |
| Name: | us-gaap:CostmethodInvestmentsRealizedLossesExcludingOtherThanTemporaryImpairments |
| Documentation: | For investments in debt and equity securities accounted for at cost, the excess of the carrying amount over net sale proceeds of investments disposed of during the period. |
| Object type: | cm:Concept |
| Data type: | Monetary (xbrli:monetaryItemType) |
| Period type: | For Period (duration) |
| Balance type: | Debit |
| Abstract: | false |
| Workiva Wdesk Taxonomy Analyzer: | us-gaap:CostmethodInvestmentsRealizedLossesExcludingOtherThanTemporaryImpairments |
| Label | Role | Language |
| Cost-method Investments, Realized Losses, Excluding Other than Temporary Impairments | http://www.xbrl.org/2003/role/label | en-US |
| Reference | Role | Topic |