v3.26.1
S000001266 [Member] Investment Objectives and Goals - U.S. GOVERNMENT MONEY MARKET FUND
Mar. 31, 2026
Prospectus [Line Items]  
Risk/Return [Heading] U.S. GOVERNMENT MONEY MARKET FUND
Objective [Heading] INVESTMENT OBJECTIVE
Objective, Primary [Text Block]
The Fund seeks to maximize current income to the extent consistent with the preservation of capital and maintenance of liquidity by investing exclusively in high quality money market instruments.