v3.26.1
Shareholder Fees - American Century Mutual Funds, Inc - BALANCED FUND
Mar. 01, 2026
USD ($)
BALANCED FUND, INVESTOR CLASS  
Prospectus [Line Items]  
Maximum Account Fee $ 25
BALANCED FUND, I CLASS  
Prospectus [Line Items]  
Maximum Account Fee 0
BALANCED FUND, R5 CLASS  
Prospectus [Line Items]  
Maximum Account Fee $ 0