Expense Example - American Century Mutual Funds, Inc - BALANCED FUND |
Mar. 01, 2026
USD ($)
|
|---|---|
| BALANCED FUND, INVESTOR CLASS | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | $ 91 |
| Expense Example, with Redemption, 3 Years | 284 |
| Expense Example, with Redemption, 5 Years | 494 |
| Expense Example, with Redemption, 10 Years | 1,096 |
| BALANCED FUND, I CLASS | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 71 |
| Expense Example, with Redemption, 3 Years | 221 |
| Expense Example, with Redemption, 5 Years | 385 |
| Expense Example, with Redemption, 10 Years | 859 |
| BALANCED FUND, R5 CLASS | |
| Prospectus [Line Items] | |
| Expense Example, with Redemption, 1 Year | 71 |
| Expense Example, with Redemption, 3 Years | 221 |
| Expense Example, with Redemption, 5 Years | 385 |
| Expense Example, with Redemption, 10 Years | $ 859 |