Common Shares [Member] Revolving Credit Facilities [Member] Fixed Income Securities Risk [Member] Below Investment Grade (High-Yield or Junk Bond) Securities Risk [Member] Foreign Securities and Emerging Markets Risk [Member] Non-U.S. Government, or Sovereign, Debt Securities Risk [Member] Foreign Currency Risk [Member] Liquidity Risk [Member] Common Stock Risk [Member] Preferred Stock Risk [Member] Convertible Securities Risk [Member] Risks of Warrants and Rights [Member] REITs Risk [Member] Mortgage-Backed and Asset-Backed Securities Risks [Member] Derivatives Risk [Member] Risks of Futures and Options on Futures [Member] Credit Default Swap Risk [Member] Repurchase Agreements Risk [Member] Reverse Repurchase Agreements Risk [Member] Senior Loans Risk [Member] Second Lien Loans Risk [Member] Loan Participations and Assignments Risk [Member] Smaller Company Risk [Member] Management Risk [Member] Potential Conflicts of Interest Risk [Member] Rating Agency Risk [Member] Inflation/Deflation Risk [Member] Counterparty Risk [Member] When-Issued and Delayed-Delivery Transactions Risk [Member] Leverage Risk [Member] Portfolio Turnover Risk [Member] Temporary Defensive Strategies Risk [Member] Market Price Discount from Net Asset Value Risk [Member] Anti-Takeover Provisions Risk [Member] Market Events Risk [Member] Valuation Risk [Member] Tax Risks [Member] Operational Risk [Member] Cybersecurity Risk [Member]