Regulatory Risks of Investment Funds [Member] Risks Associated With Covenant Lite Loans [Member] Sector Concentration [Member] Sector Risk [Member] Special Situations And Distressed Investments [Member] Technology Sectors [Member] Termination Of The Funds Interest In An Investment Fund [Member] Terrorism Risk [Member] Utilities Sector [Member] Valuation Of The Funds Interests In Investment Funds [Member] Valuations Subject To Adjustment [Member] Venture Capital And Growth Equity [Member] Agriculture And Forestry Sector Risk [Member] Allocation Risk [Member] Availability Of Investment Opportunities [Member] Climate Risk [Member] Closed end Interval Fund [Member] Commitment Strategy [Member] Currency Risk [Member] Demand And Usage Risk [Member] Emerging Markets [Member] Energy Sector Risk [Member] Environmental Health And Safety Risks [Member] Financial Institutions Risk [Member] Financial Sector [Member] First Lien Senior Secured Loans Second Lien Senior Secured Loans And Unitranche Debt [Member] Force Majeure Risk [Member] General Economic And Market Conditions [Member] General Economic And Market Conditions. General Risks Of Secondary Investments [Member] Geographic Concentration Risks [Member] High Yield Securities And Distressed Securities [Member] Illiquidity Of Infrastructure Assets [Member] Infrastructure Investments Generally [Member] Infrastructure Sector Risk [Member] Investments In Non Voting Stock Inability To Vote [Member] Investments In The Debt Securities Of Small Or Middle Market Portfolio Companies [Member] Investments In The Debt Securities Of Small Or Middlemarket Portfolio [Member] J Curve Performance Risk [Member] Leverage Utilized By The Fund [Member] Libor Risk [Member] Mezzanine Investments [Member] Nature Of Portfolio Companies [Member] Non Diversified Status [Member] Non Us Risk [Member] No Operating History [Member] Primary Investments [Member] Private Equity Investments [Member] Real Estate Investments [Member] Regulatory And Legal Risks [Member] Class D Shares Held [Member] Class D Shares [Member] Class I Shares Held [Member] Class I Shares [Member] Class S Shares Held [Member] Class S Shares [Member] Class T Shares Held [Member] Class T Shares [Member] Common Shares [Member]