Other Assets in Excess of Liabilities [Member] Closed End Funds [Member] Putnam Municipal Opportunities Trust [Member] NYLI MacKay DefinedTerm Municipal Opportunities Fund [Member] Western Asset Managed Municipals Fund Inc [Member] RiverNorth Flexible Municipal Income Fund II Inc [Member] BlackRock MuniYield New York Quality Fund Inc [Member] Eaton Vance Municipal Bond Fund [Member] BlackRock MuniHoldings California Quality Fund Inc [Member] BlackRock MuniYield Quality Fund III Inc [Member] BlackRock MuniYield Quality Fund Inc [Member] BlackRock MuniHoldings Fund Inc [Member] C000146393 [Member] Institutional Class C000146392 [Member] Class C C000146391 [Member] Class A Short-Term Investments [Member] Exchange Traded Funds [Member] Rights [Member] Common Stock [Member] Warrant [Member] C000164392 [Member] C000164393 [Member] C000164394 [Member] Flaherty And Crumrine Preferred And Income Fund Inc [Member] FS Credit Opportunities Corp [Member] FS Specialty Lending Fund [Member] DoubleLine Yield Opportunities Fund [Member] Western Asset Global High Income Fund Inc [Member] KKR Income Opportunities Fund [Member] Western Asset High Income Fund II Inc [Member] BlackRock Multi Sector Income Trust [Member] Western Asset Inflation Linked Opportunities And Income Fund [Member] Western Asset Mortgage Opportunity Fund Inc [Member] Unit Trust Funds [Member] Investment Type [Axis] Net Assets Investment Company Portfolio Turnover No Trading Symbol Flag