 | us-gaap:NetAssetValuePerShare | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:InvestmentCompanyInvestmentIncomeLossFromOperationsPerShareAbstract | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:InvestmentCompanyDistributionToShareholdersPerShare | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:InvestmentCompanyTaxReturnOfCapitalDistributionPerShare | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:InvestmentCompanyRedemptionFeePerShare | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:InvestmentCompanyPaymentByAffiliatePerShare | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:NetAssetValuePerShare | parent-child | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompany |
 | us-gaap:NetAssetValuePerShare | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyFinancialHighlightsTable |
 | us-gaap:InvestmentCompanyInvestmentIncomeLossFromOperationsPerShareAbstract | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyFinancialHighlightsTable |
 | us-gaap:InvestmentCompanyDistributionToShareholdersPerShare | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyFinancialHighlightsTable |
 | us-gaap:InvestmentCompanyTaxReturnOfCapitalDistributionPerShare | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyFinancialHighlightsTable |
 | us-gaap:InvestmentCompanyRedemptionFeePerShare | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyFinancialHighlightsTable |
 | us-gaap:InvestmentCompanyPaymentByAffiliatePerShare | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyFinancialHighlightsTable |
 | us-gaap:InvestmentCompanyNetAssetValuePerSharePeriodIncreaseDecrease | domain-member | http://fasb.org/us-gaap/role/disclosure/FinancialServicesInvestmentCompanyInvestmentCompanyFinancialHighlightsTable |