v3.25.4
Investment Objectives and Goals - American Century Mutual Funds, Inc
Mar. 01, 2026
BALANCED FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Balanced Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block] The fund seeks long-term capital growth and current income by investing approximately 60% of its assets in equity securities and the remainder in bonds and other fixed-income securities.
GROWTH FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Growth Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The fund seeks long-term capital growth.
HERITAGE FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Heritage Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The fund seeks long-term capital growth.
LARGE CAP EQUITY FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Large Cap Equity Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block] The fund seeks long-term capital growth.
Objective, Secondary [Text Block] Income is a secondary objective.
SELECT FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Select Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The fund seeks long-term capital growth.
SMALL CAP GROWTH FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Small Cap Growth Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The fund seeks long-term capital growth.
ULTRA FUND  
Prospectus [Line Items]  
Risk/Return [Heading] Ultra® Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block] The fund seeks long-term capital growth.