Diversified Municipal Portfolio [Member] Investment Objectives and Goals - Diversified Municipal Portfolio - Diversified Municipal Portfolio |
Sep. 30, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | SUMMARY INFORMATION: SANFORD C. BERNSTEIN FUND, INC.FIXED-INCOME MUNICIPAL PORTFOLIODiversified Municipal Portfolio of Sanford C. Bernstein Fund, Inc. |
| Objective [Heading] | INVESTMENT OBJECTIVE: |
| Objective, Primary [Text Block] |
The Portfolio’s investment objective is to provide safety of principal and maximize total return after taking account of federal taxes.
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