| The investment seeks total return. The fund generally invests in a portfolio consisting primarily of treasury securities, U.S. government agency securities, mortgage- backed securities, asset-backed securities, investment-grade corporate securities and related derivative contracts. It intends to invest in securities issued or guaranteed by government-sponsored entities (GSEs), including securities that are not backed by the full faith and credit of the United States. In addition, up to 20% of the portfolio may be allocated to other investments. |