| Shareholder Report | 12 Months Ended | 32 Months Ended | 91 Months Ended |
| Oct. 31, 2024 USD ($) holding | Oct. 31, 2024 USD ($) holding | Oct. 31, 2024 USD ($) holding |
| Shareholder Report [Line Items] | | | |
| Document Type | N-CSR | | |
| Amendment Flag | false | | |
| Registrant Name | AMERICAN CENTURY CAPITAL PORTFOLIOS, INC. | | |
| Entity Central Index Key | 0000908186 | | |
| Entity Investment Company Type | N-1A | | |
| Document Period End Date | Oct. 31, 2024 | | |
| C000099278 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | Investor Class | | |
| Trading Symbol | ARYVX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Material Fund Change Notice [Text Block] | This report describes changes to the fund that occurred during the reporting period. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Class $131 1.12% | | |
| Expenses Paid, Amount | $ 131 | | |
| Expense Ratio, Percent | 1.12% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund Investor Class returned 33.04% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year Investor Class 33.04% 4.06% 5.58% Regulatory Index MSCI ACWI 32.79% 11.08% 9.06% Performance Index S&P Developed REIT 30.86% 1.21% 3.89% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| Material Fund Change [Text Block] | Fund Changes Beginning October 2024, the total eligible investments required to qualify for a waiver of the annual account maintenance fee changed from $10,000 to $25,000. Such fee will also be waived for any accounts for which the shareholder has elected to receive electronic delivery of all fund/account documents. | | |
| Material Fund Change Expenses [Text Block] | Beginning October 2024, the total eligible investments required to qualify for a waiver of the annual account maintenance fee changed from $10,000 to $25,000. Such fee will also be waived for any accounts for which the shareholder has elected to receive electronic delivery of all fund/account documents. | | |
| C000099279 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | I Class | | |
| Trading Symbol | ARYNX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment I Class $107 0.92% | | |
| Expenses Paid, Amount | $ 107 | | |
| Expense Ratio, Percent | 0.92% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund I Class returned 33.31% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year I Class 33.31% 4.28% 5.78% Regulatory Index MSCI ACWI 32.79% 11.08% 9.06% Performance Index S&P Developed REIT 30.86% 1.21% 3.89% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000189665 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | Y Class | | |
| Trading Symbol | ARYYX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Y Class $90 0.77% | | |
| Expenses Paid, Amount | $ 90 | | |
| Expense Ratio, Percent | 0.77% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund Y Class returned 33.58% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | | | Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Y Class 33.58% 4.44% 7.18% 4/10/17 Regulatory Index MSCI ACWI 32.79% 11.08% 10.49% — Performance Index S&P Developed REIT 30.86% 1.21% 3.67% — |
| Performance Inception Date | | | Apr. 10, 2017 |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000099280 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | A Class | | |
| Trading Symbol | ARYMX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment A Class $159 1.37% | | |
| Expenses Paid, Amount | $ 159 | | |
| Expense Ratio, Percent | 1.37% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund A Class returned 32.73% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 The initial investment is adjusted to reflect the maximum initial sales charge. | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year A Class 32.73% 3.81% 5.31% A Class - with sales charge 25.10% 2.58% 4.69% Regulatory Index MSCI ACWI 32.79% 11.08% 9.06% Performance Index S&P Developed REIT 30.86% 1.21% 3.89% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000099281 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | C Class | | |
| Trading Symbol | ARYTX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment C Class $246 2.12% | | |
| Expenses Paid, Amount | $ 246 | | |
| Expense Ratio, Percent | 2.12% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund C Class returned 31.84% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year C Class 31.84% 3.04% 4.53% Regulatory Index MSCI ACWI 32.79% 11.08% 9.06% Performance Index S&P Developed REIT 30.86% 1.21% 3.89% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000099282 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | R Class | | |
| Trading Symbol | ARYWX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment R Class $188 1.62% | | |
| Expenses Paid, Amount | $ 188 | | |
| Expense Ratio, Percent | 1.62% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund R Class returned 32.39% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year R Class 32.39% 3.55% 5.04% Regulatory Index MSCI ACWI 32.79% 11.08% 9.06% Performance Index S&P Developed REIT 30.86% 1.21% 3.89% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000189666 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | R5 Class | | |
| Trading Symbol | ARYGX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment R5 Class $107 0.92% | | |
| Expenses Paid, Amount | $ 107 | | |
| Expense Ratio, Percent | 0.92% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund R5 Class returned 33.31% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R5 Class 33.31% 4.28% 7.01% 4/10/17 Regulatory Index MSCI ACWI 32.79% 11.08% 10.49% — Performance Index S&P Developed REIT 30.86% 1.21% 3.67% — | | |
| Performance Inception Date | | | Apr. 10, 2017 |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000131610 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | R6 Class | | |
| Trading Symbol | ARYDX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment R6 Class $90 0.77% | | |
| Expenses Paid, Amount | $ 90 | | |
| Expense Ratio, Percent | 0.77% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund R6 Class returned 33.51% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year R6 Class 33.51% 4.43% 5.93% Regulatory Index MSCI ACWI 32.79% 11.08% 9.06% Performance Index S&P Developed REIT 30.86% 1.21% 3.89% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000236116 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Global Real Estate Fund | | |
| Class Name | G Class | | |
| Trading Symbol | ACIWX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Global Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment G Class $1 0.01% | | |
| Expenses Paid, Amount | $ 1 | | |
| Expense Ratio, Percent | 0.01% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Global Real Estate Fund G Class returned 34.54% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the S&P Developed REIT Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may cause home ownership to become more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, overweight positions in select REITs detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) March 1, 2022 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception Inception Date G Class 34.54% 2.67% 3/1/22 Regulatory Index MSCI ACWI 32.79% 9.24% — Performance Index S&P Developed REIT 30.86% -0.36% — | | |
| Performance Inception Date | | Mar. 01, 2022 | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 835,707,815 | $ 835,707,815 | $ 835,707,815 |
| Holdings Count | holding | 57 | 57 | 57 |
| Advisory Fees Paid, Amount | $ 3,022,093 | | |
| Investment Company, Portfolio Turnover | 130% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Countries (as a % of net assets) Common Stocks 99.9% United States 76% Short-Term Investments 0.7% Australia 7% Other Assets and Liabilities (0.6)% United Kingdom 5% Japan 3% Canada 3% | | |
| C000015882 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | Investor Class | | |
| Trading Symbol | REACX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Material Fund Change Notice [Text Block] | This report describes changes to the fund that occurred during the reporting period. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Investor Class $134 1.15% | | |
| Expenses Paid, Amount | $ 134 | | |
| Expense Ratio, Percent | 1.15% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund Investor Class returned 32.98% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year Investor Class 32.98% 3.35% 6.05% Regulatory Index Russell 3000 37.86% 14.60% 12.44% S&P 500 38.02% 15.27% 13.00% Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.72% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
| Material Fund Change [Text Block] | Fund Changes Beginning October 2024, the total eligible investments required to qualify for a waiver of the annual account maintenance fee changed from $10,000 to $25,000. Such fee will also be waived for any accounts for which the shareholder has elected to receive electronic delivery of all fund/account documents. | | |
| Material Fund Change Expenses [Text Block] | Beginning October 2024, the total eligible investments required to qualify for a waiver of the annual account maintenance fee changed from $10,000 to $25,000. Such fee will also be waived for any accounts for which the shareholder has elected to receive electronic delivery of all fund/account documents. | | |
| C000015884 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | I Class | | |
| Trading Symbol | REAIX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment I Class $111 0.95% | | |
| Expenses Paid, Amount | $ 111 | | |
| Expense Ratio, Percent | 0.95% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund I Class returned 33.19% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year I Class 33.19% 3.55% 6.26% Regulatory Index Russell 3000 37.86% 14.60% 12.44% S&P 500 38.02% 15.27% 13.00% Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.72% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
| C000189663 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | Y Class | | |
| Trading Symbol | ARYEX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment Y Class $93 0.80% | | |
| Expenses Paid, Amount | $ 93 | | |
| Expense Ratio, Percent | 0.80% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund Y Class returned 33.39% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Y Class 33.39% 3.71% 6.40% 4/10/17 Regulatory Index Russell 3000 37.86% 14.60% 13.69% — S&P 500 38.02% 15.27% 14.35% — Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.31% — | | |
| Performance Inception Date | | | Apr. 10, 2017 |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
| C000015883 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | A Class | | |
| Trading Symbol | AREEX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment A Class $163 1.40% | | |
| Expenses Paid, Amount | $ 163 | | |
| Expense Ratio, Percent | 1.40% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund A Class returned 32.60% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 The initial investment is adjusted to reflect the maximum initial sales charge. | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year A Class 32.60% 3.10% 5.78% A Class - with sales charge 24.97% 1.88% 5.16% Regulatory Index Russell 3000 37.86% 14.60% 12.44% S&P 500 38.02% 15.27% 13.00% Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.72% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
| C000050996 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | C Class | | |
| Trading Symbol | ARYCX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment C Class $249 2.15% | | |
| Expenses Paid, Amount | $ 249 | | |
| Expense Ratio, Percent | 2.15% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund C Class returned 31.64% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year C Class 31.64% 2.33% 4.99% Regulatory Index Russell 3000 37.86% 14.60% 12.44% S&P 500 38.02% 15.27% 13.00% Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.72% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
| C000050997 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | R Class | | |
| Trading Symbol | AREWX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment R Class $192 1.65% | | |
| Expenses Paid, Amount | $ 192 | | |
| Expense Ratio, Percent | 1.65% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund R Class returned 32.33% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year R Class 32.33% 2.84% 5.52% Regulatory Index Russell 3000 37.86% 14.60% 12.44% S&P 500 38.02% 15.27% 13.00% Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.72% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
| C000189664 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | R5 Class | | |
| Trading Symbol | ARREX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment R5 Class $111 0.95% | | |
| Expenses Paid, Amount | $ 111 | | |
| Expense Ratio, Percent | 0.95% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund R5 Class returned 33.24% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R5 Class 33.24% 3.56% 6.24% 4/10/17 Regulatory Index Russell 3000 37.86% 14.60% 13.69% — S&P 500 38.02% 15.27% 14.35% — Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.31% — | | |
| Performance Inception Date | | | Apr. 10, 2017 |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
| C000131605 [Member] | | | |
| Shareholder Report [Line Items] | | | |
| Fund Name | Real Estate Fund | | |
| Class Name | R6 Class | | |
| Trading Symbol | AREDX | | |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Real Estate Fund for the period of November 1, 2023 to October 31, 2024. | | |
| Shareholder Report Annual or Semi-Annual | annual shareholder report | | |
| Additional Information [Text Block] | You can find additional information about the fund at americancentury.com/docs. You can also request this information by contacting us at 1-800-345-2021. | | |
| Additional Information Phone Number | 1-800-345-2021 | | |
| Additional Information Website | americancentury.com/docs | | |
| Expenses [Text Block] | What were the fund costs for the last year? (based on a hypothetical $10,000 investment) Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment R6 Class $93 0.80% | | |
| Expenses Paid, Amount | $ 93 | | |
| Expense Ratio, Percent | 0.80% | | |
| Factors Affecting Performance [Text Block] | What were the key factors that affected the fund’s performance? Real Estate Fund R6 Class returned 33.46% for the reporting period ended October 31, 2024. The fund seeks high total investment return through a combination of capital appreciation and current income. The commentary below refers to the fund’s performance compared to the FTSE NAREIT All Equity REITs Index. • Listed real estate investment trusts (REITs) broadly advanced during the period. The prospect of central banks lowering interest rates, which occurred late in the period, as well as the global economy staving off an anticipated recession buoyed interest in real estate. Certain sectors enjoyed a rally. Artificial intelligence lifted data center REITs, while growing demand for senior housing benefited health care REITs. • The combination of an overweight position and security selection in health care REITs contributed to the portfolio’s performance. Steadily growing demand from an aging population against a relatively limited supply of senior housing propelled certain health care REITs and were additive to performance. • Allocation among names in specialty REITs helped performance during the period. While the portfolio is overweight in specialty REITs, avoiding certain names contributed to results. At the same time, an overweight holding in a document storage and data center REIT was a top contributor to the portfolio’s performance during the period. • Security selection in residential REITs hampered performance. Falling interest rates may make home ownership more affordable, so rental properties offered by residential REITs became less attractive during the period. While the portfolio is underweight in residential REITs, an overweight position in a residential REIT detracted from performance. | | |
| Line Graph [Table Text Block] | Cumulative Performance (based on an initial $10,000 investment) October 31, 2014 through October 31, 2024 | | |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Year 10 Year R6 Class 33.46% 3.72% 6.42% Regulatory Index Russell 3000 37.86% 14.60% 12.44% S&P 500 38.02% 15.27% 13.00% Performance Index FTSE NAREIT All Equity REITs 34.09% 4.09% 6.72% | | |
| No Deduction of Taxes [Text Block] | The opinions expressed are those of American Century Investments and are no guarantee of the future performance of any American Century Investments fund. This information is for educational purposes only and is not intended as investment advice. Data reflects past performance, assumes reinvestment of dividends and capital gains and is no guarantee of future results. Current performance may be higher or lower than data shown. Investment return and principal value will fluctuate and redemption value may be more or less than original cost, and none of the charts reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. | | |
| Updated Performance Information Location [Text Block] | Visit americancentury.com for more recent performance information. | | |
| Net Assets | $ 716,055,341 | $ 716,055,341 | $ 716,055,341 |
| Holdings Count | holding | 37 | 37 | 37 |
| Advisory Fees Paid, Amount | $ 6,631,589 | | |
| Investment Company, Portfolio Turnover | 96% | | |
| Holdings [Text Block] | Fund Holdings Types of Investments in Portfolio (as a % of net assets) Top Five Sectors (as a % of net assets) Common Stocks 99.5% Health Care 17% Short-Term Investments 2.0% Retail 14% Other Assets and Liabilities (1.5)% Data Centers 12% Telecommunications REITs 12% Residential 11% | | |
