Class A - C000024372 Class A Class C - C000024374 Class C Class C1 - C000081533 Class C1 Class I - C000024375 Class I Class IS - C000118995 Class IS Broad Based Index:1C000024372-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index [Member] Additional Index:2C000024372-Bloomberg U.S. Universal Index Bloomberg U.S. Universal Index [Member] C000024372-Collateralized Mortgage Obligations Collateralized Mortgage Obligations [Member] C000024372-Asset-Backed Securities Asset-Backed Securities [Member] C000024372-Communication Services Communication Services [Member] C000024372-Financials Financials [Member] C000024372-Consumer Discretionary Consumer Discretionary [Member] C000024372-Energy Energy [Member] C000024372-Industrials Industrials [Member] C000024372-Sovereign Bonds Sovereign Bonds [Member] C000024372-Information Technology Information Technology [Member] C000024372-Health Care Health Care [Member] C000024372-Materials Materials [Member] C000024372-Real Estate Real Estate [Member] C000024372-Utilities Utilities [Member] C000024372-Consumer Staples Consumer Staples [Member] C000024372-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000024372-Non-U.S. Treasury Inflation Protected Securities Non-U.S. Treasury Inflation Protected Securities [Member] C000024372-Purchased Options Purchased Options [Member] Broad Based Index:21C000024374-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index [Member] Additional Index:22C000024374-Bloomberg U.S. Universal Index Bloomberg U.S. Universal Index [Member] C000024374-Collateralized Mortgage Obligations Collateralized Mortgage Obligations [Member] C000024374-Asset-Backed Securities Asset-Backed Securities [Member] C000024374-Communication Services Communication Services [Member] C000024374-Financials Financials [Member] C000024374-Consumer Discretionary Consumer Discretionary [Member] C000024374-Energy Energy [Member] C000024374-Industrials Industrials [Member] C000024374-Sovereign Bonds Sovereign Bonds [Member] C000024374-Information Technology Information Technology [Member] C000024374-Health Care Health Care [Member] C000024374-Materials Materials [Member] C000024374-Real Estate Real Estate [Member] C000024374-Utilities Utilities [Member] C000024374-Consumer Staples Consumer Staples [Member] C000024374-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000024374-Non-U.S. Treasury Inflation Protected Securities Non-U.S. Treasury Inflation Protected Securities [Member] C000024374-Purchased Options Purchased Options [Member] Broad Based Index:41C000081533-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index [Member] Additional Index:42C000081533-Bloomberg U.S. Universal Index Bloomberg U.S. Universal Index [Member] C000081533-Collateralized Mortgage Obligations Collateralized Mortgage Obligations [Member] C000081533-Asset-Backed Securities Asset-Backed Securities [Member] C000081533-Communication Services Communication Services [Member] C000081533-Financials Financials [Member] C000081533-Consumer Discretionary Consumer Discretionary [Member] C000081533-Energy Energy [Member] C000081533-Industrials Industrials [Member] C000081533-Sovereign Bonds Sovereign Bonds [Member] C000081533-Information Technology Information Technology [Member] C000081533-Health Care Health Care [Member] C000081533-Materials Materials [Member] C000081533-Real Estate Real Estate [Member] C000081533-Utilities Utilities [Member] C000081533-Consumer Staples Consumer Staples [Member] C000081533-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000081533-Non-U.S. Treasury Inflation Protected Securities Non-U.S. Treasury Inflation Protected Securities [Member] C000081533-Purchased Options Purchased Options [Member] Broad Based Index:61C000024375-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index [Member] Additional Index:62C000024375-Bloomberg U.S. Universal Index Bloomberg U.S. Universal Index [Member] C000024375-Collateralized Mortgage Obligations Collateralized Mortgage Obligations [Member] C000024375-Asset-Backed Securities Asset-Backed Securities [Member] C000024375-Communication Services Communication Services [Member] C000024375-Financials Financials [Member] C000024375-Consumer Discretionary Consumer Discretionary [Member] C000024375-Energy Energy [Member] C000024375-Industrials Industrials [Member] C000024375-Sovereign Bonds Sovereign Bonds [Member] C000024375-Information Technology Information Technology [Member] C000024375-Health Care Health Care [Member] C000024375-Materials Materials [Member] C000024375-Real Estate Real Estate [Member] C000024375-Utilities Utilities [Member] C000024375-Consumer Staples Consumer Staples [Member] C000024375-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000024375-Non-U.S. Treasury Inflation Protected Securities Non-U.S. Treasury Inflation Protected Securities [Member] C000024375-Purchased Options Purchased Options [Member] Broad Based Index:80C000118995-Bloomberg U.S. Aggregate Index_1 Bloomberg U.S. Aggregate Index [Member] Additional Index:81C000118995-Bloomberg U.S. Universal Index Bloomberg U.S. Universal Index [Member] C000118995-Collateralized Mortgage Obligations Collateralized Mortgage Obligations [Member] C000118995-Asset-Backed Securities Asset-Backed Securities [Member] C000118995-Communication Services Communication Services [Member] C000118995-Financials Financials [Member] C000118995-Consumer Discretionary Consumer Discretionary [Member] C000118995-Energy Energy [Member] C000118995-Industrials Industrials [Member] C000118995-Sovereign Bonds Sovereign Bonds [Member] C000118995-Information Technology Information Technology [Member] C000118995-Health Care Health Care [Member] C000118995-Materials Materials [Member] C000118995-Real Estate Real Estate [Member] C000118995-Utilities Utilities [Member] C000118995-Consumer Staples Consumer Staples [Member] C000118995-Mortgage-Backed Securities Mortgage-Backed Securities [Member] C000118995-Non-U.S. Treasury Inflation Protected Securities Non-U.S. Treasury Inflation Protected Securities [Member] C000118995-Purchased Options Purchased Options [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