Common Shares [Member] Investment Risk and Market Risk [Member] Below Investment Grade Securities (High-Yield) Risk [Member] Low Rated and Unrated Securities [Member] Default Risk [Member] Foreign (Non-U.S.) Investment Risk [Member] Economic and Political Risks [Member] Investment Controls; Repatriation [Member] Market Illiquidity [Member] Currency Devaluations and Fluctuations [Member] Financial Information and Standards [Member] Smaller Company Risk [Member] Credit Risk and Counterparty Risk [Member] Reinvestment Risk [Member] Liquidity Risk [Member] Duration Risk [Member] Management Risk [Member] Leverage Risk [Member] Derivatives Risk [Member] Investment in Loans Risk [Member] Dollar Rolls, Asset-Backed Securities and Mortgage-Backed Securities Risk [Member] Interest Rate Transactions Risk [Member] Valuation Risk [Member] Risks of Warrants and Rights [Member] Temporary Defensive Strategies Risk [Member] Market Price Discount from Net Asset Value [Member] Inflation/Deflation Risk [Member] Market Events Risk [Member] Legislative and Regulatory Risk [Member] Anti-Takeover Provisions Risk [Member] Valuation Risk_1 [Member] Tax Risks [Member] Operational Risk [Member] Cybersecurity Risk [Member] Revolving Credit Facility [Member]