Market Risks, Regulatory Risk [Member] Market Risks, Regulatory Risk Investment Risks, Securities On A When-Issued Or Forward Commitment Basis Risk [Member] Investment Risks, Securities On A When-Issued Or Forward Commitment Basis Risk Market Risks, Credit Risk [Member] Market Risks, Credit Risk Series G Mandatory Redeemable Preferred Shares [Member] Series G Mandatory Redeemable Preferred Shares Series E Mandatory Redeemable Preferred Shares [Member] Series E Mandatory Redeemable Preferred Shares Series C Mandatory Redeemable Preferred Shares [Member] Series C Mandatory Redeemable Preferred Shares Class of Stock [Domain] Note-on-Note Loan (Axos Bank) [Member] Note-on-Note Loan (Axos Bank) Debt Instrument, Name [Domain] Series A Mandatory Redeemable Preferred Shares [Member] Series A Mandatory Redeemable Preferred Shares Market Risks, Inflation Risk [Member] Market Risks, Inflation Risk Investment Risks, Interest Rate Swaps Risk [Member] Investment Risks, Interest Rate Swaps Risk Market Risks [Member] Market Risks Investment Risks, Risks Of Foreign Investing [Member] Investment Risks, Risks Of Foreign Investing Investment Risks, Covenant-Lite Loans Risk [Member] Investment Risks, Covenant-Lite Loans Risk Preferred Stock [Member] Investment Risks [Member] Investment Risks Market Risks, Interest Rate Risk [Member] Market Risks, Interest Rate Risk Investment Risks, Potential Conflicts Of Interest Risk—Allocation of Investment Opportunities [Member] Investment Risks, Potential Conflicts Of Interest Risk—Allocation of Investment Opportunities Market Risks, Prepayment Risk [Member] Market Risks, Prepayment Risk Credit Facility (JPMorgan Chase Bank, National Association) [Member] Credit Facility (JPMorgan Chase Bank, National Association) Investment Risks, Real Assets Investments Risk [Member] Investment Risks, Real Assets Investments Risk Series H Mandatory Redeemable Preferred Shares [Member] Series H Mandatory Redeemable Preferred Shares Market Risks, Currency Hedging Risk [Member] Market Risks, Currency Hedging Risk Investment Risks, Equity Security Risk [Member] Investment Risks, Equity Security Risk Series F Mandatory Redeemable Preferred Shares [Member] Series F Mandatory Redeemable Preferred Shares Series D Mandatory Redeemable Preferred Shares [Member] Series D Mandatory Redeemable Preferred Shares Series B Mandatory Redeemable Preferred Shares [Member] Series B Mandatory Redeemable Preferred Shares Investment Risks, Asset-Backed Securities Risk [Member] Investment Risks, Asset-Backed Securities Risk Investment Risks, Real Estate Investments Risk [Member] Investment Risks, Real Estate Investments Risk Market Risks, Cybersecurity Risk [Member] Market Risks, Cybersecurity Risk Market Risks, Credit Spread Risk [Member] Market Risks, Credit Spread Risk Market Risks, Unitranche Loans [Member] Market Risks, Unitranche Loans Investment Risks, Loans Risk [Member] Investment Risks, Loans Risk Market Risks, Payment-In-Kind (“PIK”) Income Risk [Member] Market Risks, Payment-In-Kind (“PIK”) Income Risk Investment Risks, Corporate Bond Risk [Member] Investment Risks, Corporate Bond Risk Investment Risks, Portfolio Fair Value Risk [Member] Investment Risks, Portfolio Fair Value Risk Credit Facility (Société Generale / HSBC) [Member] Credit Facility (Société Generale / HSBC) Market Risks, Foreign Exchange Rate Risk [Member] Market Risks, Foreign Exchange Rate Risk Credit Facility (Société Generale) [Member] Credit Facility (Société Generale) Credit Facility (Bank of America, N.A.) [Member] Credit Facility (Bank of America, N.A.) Market Risks, Equity Risk [Member] Market Risks, Equity Risk Market Risks, Volatility Risk [Member] Market Risks, Volatility Risk Investment Risks, Collateralized Loan Obligations Risk [Member] Investment Risks, Collateralized Loan Obligations Risk