Annual Total Returns - American Century Mutual Funds, Inc |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| BALANCED FUND | BALANCED FUND, INVESTOR CLASS | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 9.60% | 11.93% | 16.18% | (17.35%) | 16.03% | 12.61% | 19.63% | (3.92%) | 14.05% | 6.90% |
| GROWTH FUND | GROWTH FUND, INVESTOR CLASS | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 15.23% | 26.21% | 43.27% | (31.43%) | 27.49% | 35.21% | 35.40% | (1.63%) | 30.09% | 4.15% |
| HERITAGE FUND | HERITAGE FUND, INVESTOR CLASS | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 6.61% | 24.85% | 20.64% | (28.14%) | 11.10% | 42.48% | 35.52% | (5.17%) | 21.85% | 3.21% |
| LARGE CAP EQUITY FUND | LARGE CAP EQUITY FUND, INVESTOR CLASS | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 11.22% | 19.60% | 24.20% | (19.53%) | 28.60% | 19.27% | 33.82% | (5.50%) | 25.79% | 8.99% |
| SELECT FUND | SELECT FUND, INVESTOR CLASS | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 16.27% | 26.16% | 39.90% | (28.93%) | 25.18% | 33.97% | 36.31% | (3.63%) | 28.93% | 5.48% |
| SMALL CAP GROWTH FUND | SMALL CAP GROWTH FUND, INVESTOR CLASS | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 9.03% | 14.90% | 17.13% | (26.41%) | 7.10% | 50.88% | 36.74% | (4.88%) | 25.85% | 10.76% |
| ULTRA FUND | ULTRA FUND, INVESTOR CLASS | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 12.62% | 29.55% | 43.31% | (32.46%) | 23.21% | 49.78% | 34.60% | 0.66% | 31.90% | 4.38% |