Class A - C000113713 Class A Class C - C000113714 Class C Class FI - C000034299 Class FI Class R - C000113715 Class R Class I - C000034298 Class I Class IS - C000066992 Class IS Broad Based Index:1C000113713-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index Additional Index:2C000113713-ICE BofA 3-Month U.S. Treasury Bill Index ICE BofA 3-Month U.S. Treasury Bill Index C000113713-U.S. Government & Agency Obligations U.S. Government & Agency Obligations [Member] C000113713-Corporate Bonds & Notes [Member] Corporate Bonds & Notes [Member] C000113713-Collateralized Mortgage Obligations_ Collateralized Mortgage Obligations_ [Member] C000113713-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000113713-Asset-Backed Securities_ Asset-Backed Securities [Member] C000113713-Sovereign Bonds Sovereign Bonds [Member] C000113713-Senior Loans_ [Member] Senior Loans_ [Member] [Member] C000113713-U.S. Treasury Inflation Protected Securities U.S. Treasury Inflation Protected Securities [Member] C000113713-Purchased Options Purchased Options [Member] C000113713-Common Stocks_2 Common Stocks [Member] C000113713-Warrants_1 Warrants [Member] Broad Based Index:15C000113714-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index Additional Index:16C000113714-ICE BofA 3-Month U.S. Treasury Bill Index ICE BofA 3-Month U.S. Treasury Bill Index C000113714-U.S. Government & Agency Obligations U.S. Government & Agency Obligations [Member] C000113714-Corporate Bonds & Notes [Member] Corporate Bonds & Notes [Member] C000113714-Collateralized Mortgage Obligations_ Collateralized Mortgage Obligations [Member] C000113714-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000113714-Asset-Backed Securities_ Asset-Backed Securities [Member] C000113714-Sovereign Bonds Sovereign Bonds [Member] C000113714-Senior Loans_ [Member] Senior Loans [Member] C000113714-U.S. Treasury Inflation Protected Securities_1 U.S. Treasury Inflation Protected Securities [Member] C000113714-Purchased Options Purchased Options [Member] C000113714-Common Stocks_2 Common Stocks [Member] C000113714-Warrants_1 Warrants [Member] Broad Based Index:29C000034299-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index Additional Index:30C000034299-ICE BofA 3-Month U.S. Treasury Bill Index ICE BofA 3-Month U.S. Treasury Bill Index C000034299-U.S. Government & Agency Obligations U.S. Government & Agency Obligations [Member] C000034299-Corporate Bonds & Notes_ Corporate Bonds & Notes [Member] C000034299-Collateralized Mortgage Obligations_ Collateralized Mortgage Obligations [Member] Largest Holding:34C000034299-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000034299-Asset-Backed Securities_ Asset-Backed Securities [Member] C000034299-Sovereign Bonds Sovereign Bonds [Member] C000034299-Senior Loans_ [Member] Senior Loans [Member] C000034299-U.S. Treasury Inflation Protected Securities U.S. Treasury Inflation Protected Securities [Member] C000034299-Purchased Options Purchased Options [Member] C000034299-Common Stocks_2 Common Stocks [Member] C000034299-Warrants_1 Warrants [Member] Broad Based Index:42C000113715-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index Additional Index:43C000113715-ICE BofA 3-Month U.S. Treasury Bill Index ICE BofA 3-Month U.S. Treasury Bill Index C000113715-U.S. Government & Agency Obligations U.S. Government & Agency Obligations [Member] C000113715-Corporate Bonds & Notes_ Corporate Bonds & Notes [Member] C000113715-Collateralized Mortgage Obligations Collateralized Mortgage Obligations [Member] C000113715-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000113715-Asset-Backed Securities_ Asset-Backed Securities [Member] C000113715-Sovereign Bonds Sovereign Bonds [Member] C000113715-Senior Loans_ [Member] Senior Loans [Member] C000113715-U.S. Treasury Inflation Protected Securities U.S. Treasury Inflation Protected Securities [Member] C000113715-Purchased Options Purchased Options [Member] C000113715-Common Stocks_2 Common Stocks [Member] C000113715-Warrants_1 Warrants [Member] Broad Based Index:55C000034298-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index Additional Index:56C000034298-ICE BofA 3-Month U.S. Treasury Bill Index ICE BofA 3-Month U.S. Treasury Bill Index C000034298-U.S. Government & Agency Obligations U.S. Government & Agency Obligations [Member] C000034298-Corporate Bonds & Notes_ Corporate Bonds & Notes [Member] C000034298-Collateralized Mortgage Obligations_ Collateralized Mortgage Obligations [Member] C000034298-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000034298-Asset-Backed Securities_ Asset-Backed Securities [Member] C000034298-Sovereign Bonds Sovereign Bonds [Member] C000034298-Senior Loans_ [Member] Senior Loans [Member] C000034298-U.S. Treasury Inflation Protected Securities U.S. Treasury Inflation Protected Securities [Member] C000034298-Purchased Options Purchased Options [Member] C000034298-Common Stocks_2 Common Stocks [Member] C000034298-Warrants_1 Warrants [Member] Broad Based Index:68C000066992-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index Additional Index:69C000066992-ICE BofA 3-Month U.S. Treasury Bill Index ICE BofA 3-Month U.S. Treasury Bill Index C000066992-U.S. Government & Agency Obligations_1 [Member] U.S. Government & Agency Obligations [Member] C000066992-Corporate Bonds & Notes_ Corporate Bonds & Notes [Member] C000066992-Collateralized Mortgage Obligations_ Collateralized Mortgage Obligations [Member] C000066992-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000066992-Asset-Backed Securities_ Asset-Backed Securities [Member] C000066992-Sovereign Bonds Sovereign Bonds [Member] C000066992-Senior Loans_ [Member] Senior Loans [Member] C000066992-U.S. Treasury Inflation Protected Securities U.S. Treasury Inflation Protected Securities [Member] C000066992-Purchased Options Purchased Options [Member] C000066992-Common Stocks_2 Common Stocks [Member] C000066992-Warrants_1 Warrants [Member] Net Assets Investment Company Portfolio Turnover Portfolio Turnover Commodity Index Linked Notes [Member] Commodity Index Linked Notes Sovereign Debt Securities [Member] Sovereign Debt Securities Convertible Debt Securities [Member] Convertible Debt Securities Corporate Debt Securities [Member] Corporate Debt Securities Corporate Note Securities [Member] Corporate Note Securities Corporate Bond Securities [Member] Corporate Bond Securities Fixed Income Investments [Member] Fixed Income Investments Securities Investment [Member] Securities Investment Other Aggregated Investments [Member] Other Aggregated Investments Real Estate Sector [Member] Real Estate Sector Standard Poors 500 Index [Member] Standard Poors 500 Index Nasdaq Composite Index [Member] Nasdaq Composite Index Equity Securities Industry [Member] Equity Securities Industry Equity Securities [Member] Equity Securities Dow Jones Industrial Average [Member] Dow Jones Industrial Average Construction Sector [Member] Construction Sector Automotive Sector [Member] Automotive Sector Transportation Sector [Member] Transportation Sector Aerospace Sector [Member] Aerospace Sector Consumer Sector [Member] Consumer Sector Chemicals Sector [Member] Chemicals Sector Insurance Sector [Member] Insurance Sector Cash [Member] Cash Asset Backed Securities [Member] Asset Backed Securities Container And PackagingSector [Member] Container And PackagingSector Investment Type [Axis] Asset Class US Treasury Securities [Member] US Treasury Securities Mortgage Backed Securities [Member] Mortgage Backed Securities Investment Type Categorization [Member] Investment Type Categorization Entertainment Sector [Member] Entertainment Sector Food And Beverage Sector [Member] Food And Beverage Sector Financial Services Sector [Member] Financial Services Sector Healthcare Sector [Member] Healthcare Sector Energy Sector [Member] Energy Sector Technology Sector [Member] Technology Sector Government Sector [Member] Government Sector No Trading Symbol