v3.26.1
Annual Fund Operating Expenses - American Century Mutual Funds, Inc - BALANCED FUND
Mar. 01, 2026
BALANCED FUND, INVESTOR CLASS  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.88%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.01%
Expenses (as a percentage of Assets) 0.89%
BALANCED FUND, I CLASS  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.68%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.01%
Expenses (as a percentage of Assets) 0.69%
BALANCED FUND, R5 CLASS  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.68%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.01%
Expenses (as a percentage of Assets) 0.69%