| Name | CostmethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairments |
|---|---|
| Namespace | http://fasb.org/us-gaap/2021-01-31 |
| Prefix | us-gaap |
| Data type | xbrli:monetaryItemType |
| Period type | duration |
| Substitution Group | xbrli:item |
| Balance | credit |
| Nillable | True |
| Abstract | False |
| Text | Lang | Role | Container role |
|---|---|---|---|
| Cost-method Investments, Realized Gain (Loss), Excluding Other than Temporary Impairments | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Cost-method Investments, Realized Gain (Loss), Excluding Other than Temporary Impairments, Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| This item represents the gain (loss) realized during the period from the sale of investments accounted for under the cost method of accounting. | en-US | http://www.xbrl.org/2003/role/documentation | http://www.xbrl.org/2003/role/link |
| Name | Value | Role |
|---|---|---|
| Note | Element is intended to be used for each reported period for which amendment from Accounting Standards Update identified in tin-part:Source_ASU_Number is not applied. | http://fasb.org/us-gaap/role/tin/transition |
| PublishDate | 2018-01 | http://fasb.org/us-gaap/role/tin/transition |
| Source | ASU | http://fasb.org/us-gaap/role/tin/transition |
| SourceName | Financial Instruments-Recognition and Measurement | http://fasb.org/us-gaap/role/tin/transition |
| Source_ASU_Number | 2016-01 | http://fasb.org/us-gaap/role/tin/transition |
| elementCreationTaxonomyVersion | 2011 | http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:Asu201601TransitionAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsDebtAndEquitySecurities |