Performance Management - American Century Quantitative Equity Funds Prospectus |
Nov. 01, 2026 |
|---|---|
| DISCIPLINED CORE EQUITY FUND | |
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Fund Performance |
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, please visit americancentury.com. Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.
|
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. |
| Bar Chart Does Not Reflect Sales Loads [Text] | Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown. |
| Bar Chart [Heading] | Calendar Year Total Returns |
| Bar Chart Closing [Text Block] | Highest Performance Quarter (2Q 2020): 20.36% Lowest Performance Quarter (1Q 2020): -18.95% As of September 30, 2026, the most recent calendar quarter end, the fund’s Investor Class year-to-date return was 13.01%.
|
| Performance Table Heading | Average Annual Total ReturnsFor the calendar year ended December 31, 2025 |
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs. |
| Performance Table One Class of after Tax Shown [Text] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) |
| Performance Table Closing [Text Block] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.
|
| Performance Availability Website Address [Text] | americancentury.com |
| DISCIPLINED CORE EQUITY FUND | DISCIPLINED CORE EQUITY FUND INVESTOR CLASS | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | Investor Class year-to-date return |
| Bar Chart, Year to Date Return | 13.01% |
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | Highest Performance Quarter |
| Highest Quarterly Return | 20.36% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | Lowest Performance Quarter |
| Lowest Quarterly Return | (18.95%) |
| Lowest Quarterly Return, Date | Mar. 31, 2020 |
| DISCIPLINED GROWTH FUND | |
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Fund Performance |
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. The table also shows returns for Russell 1000 Growth Index, which the advisor considers to be more representative of the fund’s investment strategy. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, please visit americancentury.com. Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.
|
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. |
| Performance Additional Market Index [Text] | The table also shows returns for Russell 1000 Growth Index, which the advisor considers to be more representative of the fund’s investment strategy. |
| Bar Chart Does Not Reflect Sales Loads [Text] | Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown. |
| Bar Chart [Heading] | Calendar Year Total Returns |
| Bar Chart Closing [Text Block] | Highest Performance Quarter (2Q 2020): 26.83% Lowest Performance Quarter (2Q 2022): -21.07% As of September 30, 2026, the most recent calendar quarter end, the fund’s Investor Class year-to-date return was 7.08%.
|
| Performance Table Heading | Average Annual Total Returns For the calendar year ended December 31, 2025 |
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs. |
| Performance Table One Class of after Tax Shown [Text] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) |
| Performance Table Closing [Text Block] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.
|
| Performance Availability Website Address [Text] | americancentury.com |
| DISCIPLINED GROWTH FUND | DISCIPLINED GROWTH FUND INVESTOR CLASS | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | Investor Class year-to-date return |
| Bar Chart, Year to Date Return | 7.08% |
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | Highest Performance Quarter |
| Highest Quarterly Return | 26.83% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | Lowest Performance Quarter |
| Lowest Quarterly Return | (21.07%) |
| Lowest Quarterly Return, Date | Jun. 30, 2022 |
| DISCIPLINED VALUE FUND | |
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Fund Performance |
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. The table also shows returns for Russell 1000 Value Index, which the advisor considers to be more representative of the fund’s investment strategy. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, please visit americancentury.com. Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.
|
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. |
| Performance Additional Market Index [Text] | The table also shows returns for Russell 1000 Value Index, which the advisor considers to be more representative of the fund’s investment strategy. |
| Bar Chart Does Not Reflect Sales Loads [Text] | Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown. |
| Bar Chart [Heading] | Calendar Year Total Returns |
| Bar Chart Closing [Text Block] | Highest Performance Quarter (2Q 2020): 17.86% Lowest Performance Quarter (1Q 2020): -20.72% As of September 30, 2026, the most recent calendar quarter end, the fund’s Investor Class year-to-date return was 14.87%.
|
| Performance Table Heading | Average Annual Total ReturnsFor the calendar year ended December 31, 2025 |
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs. |
| Performance Table One Class of after Tax Shown [Text] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) |
| Performance Table Closing [Text Block] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.
|
| Performance Availability Website Address [Text] | americancentury.com |
| DISCIPLINED VALUE FUND | DISCIPLINED VALUE FUND INVESTOR CLASS | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | Investor Class year-to-date return |
| Bar Chart, Year to Date Return | 14.87% |
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | Highest Performance Quarter |
| Highest Quarterly Return | 17.86% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | Lowest Performance Quarter |
| Lowest Quarterly Return | (20.72%) |
| Lowest Quarterly Return, Date | Mar. 31, 2020 |
| GLOBAL GOLD FUND | |
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Fund Performance |
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. The table also shows returns for the NYSE Arca Gold Miners Index, which is a modified market capitalization-weighted index comprised of publicly traded companies involved primarily in mining for gold and silver. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, please visit americancentury.com. Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.
|
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. |
| Performance Additional Market Index [Text] | The table also shows returns for the NYSE Arca Gold Miners Index, which is a modified market capitalization-weighted index comprised of publicly traded companies involved primarily in mining for gold and silver. |
| Bar Chart Does Not Reflect Sales Loads [Text] | Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown. |
| Bar Chart [Heading] | Calendar Year Total Returns |
| Bar Chart Closing [Text Block] | Highest Performance Quarter (2Q 2020): 53.65% Lowest Performance Quarter (2Q 2022): -28.97% As of September 30, 2026, the most recent calendar quarter end, the fund’s Investor Class year-to-date return was 1.67%.
|
| Performance Table Heading | Average Annual Total ReturnsFor the calendar year ended December 31, 2025 |
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs. |
| Performance Table One Class of after Tax Shown [Text] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) |
| Performance Table Closing [Text Block] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.
|
| Performance Availability Website Address [Text] | americancentury.com |
| GLOBAL GOLD FUND | GLOBAL GOLD FUND INVESTOR CLASS | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | Investor Class year-to-date return |
| Bar Chart, Year to Date Return | 1.67% |
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | Highest Performance Quarter |
| Highest Quarterly Return | 53.65% |
| Highest Quarterly Return, Date | Jun. 30, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | Lowest Performance Quarter |
| Lowest Quarterly Return | (28.97%) |
| Lowest Quarterly Return, Date | Jun. 30, 2022 |
| SMALL COMPANY FUND | |
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Fund Performance |
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. The table also shows returns for Russell 2000 Index, which the advisor considers to be more representative of the fund’s investment strategy. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, please visit americancentury.com. Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.
|
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. |
| Performance Additional Market Index [Text] | The table also shows returns for Russell 2000 Index, which the advisor considers to be more representative of the fund’s investment strategy. |
| Bar Chart Does Not Reflect Sales Loads [Text] | Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown. |
| Bar Chart [Heading] | Calendar Year Total Returns |
| Bar Chart Closing [Text Block] | Highest Performance Quarter (4Q 2020): 27.87% Lowest Performance Quarter (1Q 2020): -31.62% As of September 30, 2026, the most recent calendar quarter end, the fund’s Investor Class year-to-date return was 16.60%.
|
| Performance Table Heading | Average Annual Total ReturnsFor the calendar year ended December 31, 2025 |
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs. |
| Performance Table One Class of after Tax Shown [Text] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) |
| Performance Table Closing [Text Block] | The after-tax returns are shown only for Investor Class shares. After-tax returns for other share classes will vary. After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs.
|
| Performance Availability Website Address [Text] | americancentury.com |
| SMALL COMPANY FUND | SMALL COMPANY FUND INVESTOR CLASS | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | Investor Class year-to-date return |
| Bar Chart, Year to Date Return | 16.60% |
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | Highest Performance Quarter |
| Highest Quarterly Return | 27.87% |
| Highest Quarterly Return, Date | Dec. 31, 2020 |
| Lowest Quarterly Return, Label [Optional Text] | Lowest Performance Quarter |
| Lowest Quarterly Return | (31.62%) |
| Lowest Quarterly Return, Date | Mar. 31, 2020 |
| UTILITIES FUND | |
| Prospectus [Line Items] | |
| Bar Chart and Performance Table [Heading] | Fund Performance |
| Performance Narrative [Text Block] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. The table also shows returns for the S&P 500® Utilities Index, which the advisor considers to be more representative of the fund’s investment strategy. The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. For current performance information, please visit americancentury.com. Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown.
|
| Performance Past Does Not Indicate Future [Text] | The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future. |
| Performance Information Illustrates Variability of Returns [Text] | The following bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Investor Class shares. The table shows how the fund’s average annual returns for the periods shown compared with those of a broad measure of market performance. |
| Performance Additional Market Index [Text] | The table also shows returns for the S&P 500® Utilities Index, which the advisor considers to be more representative of the fund’s investment strategy. |
| Bar Chart Does Not Reflect Sales Loads [Text] | Sales charges and account fees, if applicable, are not reflected in the bar chart. If those charges were included, returns would be less than those shown. |
| Bar Chart [Heading] | Calendar Year Total Returns |
| Bar Chart Closing [Text Block] | Highest Performance Quarter (3Q 2024): 19.82% Lowest Performance Quarter (1Q 2020): -16.95% As of September 30, 2026, the most recent calendar quarter end, the fund’s Investor Class year-to-date return was -4.62%.
|
| Performance Table Heading | Average Annual Total ReturnsFor the calendar year ended December 31, 2025 |
| Performance Table Uses Highest Federal Rate | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. |
| Performance Table Not Relevant to Tax Deferred | Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs. |
| Index No Deduction for Fees, Expenses, or Taxes [Text] | (reflects no deduction for fees, expenses or taxes) |
| Performance Table Closing [Text Block] | After-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or IRAs. |
| Performance Availability Website Address [Text] | americancentury.com |
| UTILITIES FUND | UTILITIES FUND INVESTOR CLASS | |
| Prospectus [Line Items] | |
| Year to Date Return, Label [Optional Text] | Investor Class year-to-date return |
| Bar Chart, Year to Date Return | (4.62%) |
| Bar Chart, Year to Date Return, Date | Sep. 30, 2026 |
| Highest Quarterly Return, Label [Optional Text] | Highest Performance Quarter |
| Highest Quarterly Return | 19.82% |
| Highest Quarterly Return, Date | Sep. 30, 2024 |
| Lowest Quarterly Return, Label [Optional Text] | Lowest Performance Quarter |
| Lowest Quarterly Return | (16.95%) |
| Lowest Quarterly Return, Date | Mar. 31, 2020 |