| Name | NonoperatingGainsLosses |
|---|---|
| Namespace | http://fasb.org/us-gaap/2020-01-31 |
| 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 |
|---|---|---|---|
| Nonoperating Gains (Losses) | en-US | http://www.xbrl.org/2003/role/label | http://www.xbrl.org/2003/role/link |
| Nonoperating Gains (Losses), Total | en-US | http://www.xbrl.org/2003/role/totalLabel | http://www.xbrl.org/2003/role/link |
| Name | Relation Type | Role | |
|---|---|---|---|
us-gaap:GainLossOnInvestments | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:VentureCapitalGainsLossesNet | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:DisposalGroupNotDiscontinuedOperationGainLossOnDisposal | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:DeconsolidationGainOrLossAmount | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:GainLossOnSaleOfPreviouslyUnissuedStockBySubsidiaryOrEquityInvesteeNonoperatingIncome | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:GainLossOnSaleOfInterestInProjects | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:GainLossOnDerivativeInstrumentsNetPretax | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome | |
us-gaap:OtherNonoperatingGainsLosses | summation-item | http://fasb.org/us-gaap/role/statement/StatementOfIncome |