 | dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/statement/CommonDomainMembers |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/statement/CommonDomainMembersStatementTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentHoldings |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentHoldings |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentHoldings |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentHoldingsScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentHoldingsScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchased |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchasedInvestmentsSoldNotYetPurchasedTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchasedInvestmentsSoldNotYetPurchasedTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchasedScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentsSoldNotYetPurchasedScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/SummaryOfInvestmentHoldings |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SummaryOfInvestmentHoldings |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SummaryOfInvestmentHoldings |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SummaryOfInvestmentHoldingsScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SummaryOfInvestmentHoldingsScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/OpenOptionContractsWritten |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/OpenOptionContractsWritten |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/OpenOptionContractsWritten |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliates |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliates |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliates |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliatesScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentsInAndAdvancesToAffiliatesScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/OtherThanSecuritiesInvestmentHoldings |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/OtherThanSecuritiesInvestmentHoldingsInvestmentHoldingsOtherThanSecuritiesTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/OtherThanSecuritiesInvestmentHoldingsInvestmentHoldingsOtherThanSecuritiesTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/OtherThanSecuritiesInvestmentHoldingsScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/OtherThanSecuritiesInvestmentHoldingsScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/InvestmentsFederalTaxNote |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentsFederalTaxNoteFederalIncomeTaxNoteTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentsFederalTaxNoteFederalIncomeTaxNoteTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/InvestmentsFederalTaxNoteScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/InvestmentsFederalTaxNoteScheduleOfInvestmentsTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformation |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedBalanceSheetStatementTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedBalanceSheetStatementTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedCashFlowStatementTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedCashFlowStatementTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedIncomeStatementTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedIncomeStatementTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedStatementOfComprehensiveIncomeTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationCondensedStatementOfComprehensiveIncomeTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationScheduleOfCondensedFinancialStatementsTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SECScheduleArticle12-04CondensedFinancialInformationScheduleOfCondensedFinancialStatementsTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/MinorityInterest |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/MinorityInterest |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/MinorityInterest |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/MinorityInterestRedeemableNoncontrollingInterestByLegalEntityTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustries |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesCapitalizedCostsRelatingToOilAndGasProducingActivitiesByGeographicAreaTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesCapitalizedCostsRelatingToOilAndGasProducingActivitiesByGeographicAreaTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesCostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesCostsIncurredInOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivitiesTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesProvedDevelopedAndUndevelopedOilAndGasReserveQuantitiesTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesResultsOfOperationsForOilAndGasProducingActivitiesByGeographicAreaTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/ExtractiveIndustriesResultsOfOperationsForOilAndGasProducingActivitiesByGeographicAreaTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/RegulatedOperations |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsPublicUtilitiesGeneralDisclosuresTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsPublicUtilitiesGeneralDisclosuresTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsScheduleOfCapitalizationEquityTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsScheduleOfCapitalizationEquityTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsScheduleOfCapitalizationLongtermDebtTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsScheduleOfCapitalizationLongtermDebtTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsScheduleOfCapitalizationTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/RegulatedOperationsScheduleOfCapitalizationTable |
| dei:LegalEntityAxis | parent-child | http://fasb.org/us-gaap/role/disclosure/SECDisclosureSecurityRegisteredOrBeingRegistered |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SECDisclosureSecurityRegisteredOrBeingRegisteredAffiliateCollateralizedSecurityTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SECDisclosureSecurityRegisteredOrBeingRegisteredAffiliateCollateralizedSecurityTable |
| dei:LegalEntityAxis | dimension-default | http://fasb.org/us-gaap/role/disclosure/SECDisclosureSecurityRegisteredOrBeingRegisteredGuarantorAndIssuerGuaranteedSecurityTable |
| dei:LegalEntityAxis | dimension-domain | http://fasb.org/us-gaap/role/disclosure/SECDisclosureSecurityRegisteredOrBeingRegisteredGuarantorAndIssuerGuaranteedSecurityTable |
Index