UNITED KINGDOM UNITED STATES GERMANY GUERNSEY MEXICO NETHERLANDS NEW ZEALAND ROMANIA SOUTH AFRICA SPAIN AUSTRALIA BRAZIL CANADA FRANCE Forward Contracts Purchased in USD [Member] Foreign Governmental [Member] Corporate Bonds and Notes [Member] Equity Futures Long [Member] Equity Securities Preferred Stocks [Member] Interest Rate Futures Long [Member] Investment Companies [Member] Equity Securities Common Stocks [Member] US Treasury Securities [Member] Equity Written Put Options [Member] Equity Purchased Put Options [Member] Equity Total Return Swap Paid Fixed Rate [Member] Credit Default Swap Sell Protection [Member] Interest Rate Futures Short [Member] Forward Contracts Sold in USD [Member] Net Other Assets and Liabilities [Member] C000088313 [Member] Class A C000088314 [Member] Class C C000088315 [Member] Class I C000130431 [Member] Class Y Investment Type [Axis] Net Assets Investment Company Portfolio Turnover No Trading Symbol Flag