American Century Emerging Markets Fund (AEDMX) N-CSR 24 Jan 25 Certified annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	12 Months Ended
	Nov. 30, 2024
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	AMERICAN CENTURY WORLD MUTUAL FUNDS, INC.
Entity Central Index Key	0000872825
Entity Investment Company Type	N-1A
Document Period End Date	Nov. 30, 2024

Shareholder Report

Shareholder Report	12 Months Ended	32 Months Ended	60 Months Ended	68 Months Ended	72 Months Ended	92 Months Ended	104 Months Ended		116 Months Ended
	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding	Nov. 30, 2024 USD ($) holding
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	AMERICAN CENTURY WORLD MUTUAL FUNDS, INC.
Entity Central Index Key	0000872825
Entity Investment Company Type	N-1A
Document Period End Date	Nov. 30, 2024
C000018021 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	Investor Class
Trading Symbol	TWMIX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $137 1.27%
Expenses Paid, Amount	$ 137
Expense Ratio, Percent	1.27%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund Investor Class returned 15.29% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year Investor Class 15.29% 1.12% 3.00% MSCI Emerging Markets 11.86% 3.20% 3.16%
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
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.
C000018023 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	I Class
Trading Symbol	AMKIX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $115 1.07%
Expenses Paid, Amount	$ 115
Expense Ratio, Percent	1.07%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund I Class returned 15.60% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year I Class 15.60% 1.32% 3.21% MSCI Emerging Markets 11.86% 3.20% 3.16%
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000189777 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	Y Class
Trading Symbol	AEYMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $99 0.92%
Expenses Paid, Amount	$ 99
Expense Ratio, Percent	0.92%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund Y Class returned 15.72% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Y Class 15.72% 1.46% 3.44% 4/10/17 MSCI Emerging Markets 11.86% 3.20% 4.08% —
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000018022 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	A Class
Trading Symbol	AEMMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 1.52%
Expenses Paid, Amount	$ 163
Expense Ratio, Percent	1.52%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund A Class returned 15.06% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 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 15.06% 0.88% 2.75% A Class - with sales charge 8.44% -0.31% 2.14% MSCI Emerging Markets 11.86% 3.20% 3.16%
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000018024 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	C Class
Trading Symbol	ACECX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $243 2.27%
Expenses Paid, Amount	$ 243
Expense Ratio, Percent	2.27%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund C Class returned 14.25% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year C Class 14.25% 0.11% 1.99% MSCI Emerging Markets 11.86% 3.20% 3.16%
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000055528 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	R Class
Trading Symbol	AEMRX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $190 1.77%
Expenses Paid, Amount	$ 190
Expense Ratio, Percent	1.77%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund R Class returned 14.71% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R Class 14.71% 0.61% 2.48% MSCI Emerging Markets 11.86% 3.20% 3.16%
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000189779 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	R5 Class
Trading Symbol	AEGMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $115 1.07%
Expenses Paid, Amount	$ 115
Expense Ratio, Percent	1.07%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund R5 Class returned 15.48% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R5 Class 15.48% 1.30% 3.28% 4/10/17 MSCI Emerging Markets 11.86% 3.20% 4.08% —
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000131622 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	R6 Class
Trading Symbol	AEDMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $99 0.92%
Expenses Paid, Amount	$ 99
Expense Ratio, Percent	0.92%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund R6 Class returned 15.75% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R6 Class 15.75% 1.47% 3.36% MSCI Emerging Markets 11.86% 3.20% 3.16%
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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000236495 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Fund
Class Name	G Class
Trading Symbol	ACADX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Fund for the period of December 1, 2023 to November 30, 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 $2 0.02%
Expenses Paid, Amount	$ 2
Expense Ratio, Percent	0.02%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Fund G Class returned 16.79% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI Emerging Markets Index. • Consumer discretionary contributed to relative performance with contributions from MakeMyTrip, an India-based travel company, and Zomato, an India-based food delivery and restaurant reservation company. Trip.com Group, a China-based travel company, benefited results as well. The fund's underweight position in the materials sector also boosted performance. • Other individual contributors included aircraft company Embraer and semiconductor business Taiwan Semiconductor Manufacturing Co. • The communication services and energy sectors were the leading detractors from relative performance. NetEase, a China-based internet technology business, and PRIO, an oil and natural gas company, dragged on results. • Other notable detractors included Samsung Electronics and Hapvida Participacoes e Investimentos, the Brazil-based health care company. Kweichow Moutai, a China-based liquor producer, and Banco BTG Pactual, a financial company based in Brazil, also hurt results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 1, 2022 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year Since Inception Inception Date G Class 16.79% -0.13% 4/1/22 MSCI Emerging Markets 11.86% 0.45% —
Performance Inception Date		Apr. 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	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256	$ 1,785,280,256
Holdings Count | holding	78	78	78	78	78	78	78	78	78
Advisory Fees Paid, Amount	$ 12,707,240
Investment Company, Portfolio Turnover	29%
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 99.5% China 27% Short-Term Investments 1.2% India 19% Other Assets and Liabilities (0.7)% Taiwan 19% South Korea 8% Brazil 6%
C000167122 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Small Cap Fund
Class Name	Investor Class
Trading Symbol	AECVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Small Cap Fund for the period of December 1, 2023 to November 30, 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 $146 1.39%
Expenses Paid, Amount	$ 146
Expense Ratio, Percent	1.39%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Small Cap Fund Investor Class returned 9.93% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI Emerging Markets Small Cap Index. • The industrials sector contributed to relative performance. Key holdings included Gamuda, a Malaysia-based engineering and construction company, and BizLink Holding, a company focused on interconnect solutions. Stock selection in financials also contributed to results. • Notable contributors were MakeMyTrip, an India-based online travel company, and Prestige Estates Projects, an India-based real estate company. India-based PB Fintech, an online platform for insurance and lending products, also helped. • Communication services and consumer staples hurt relative performance. VTEX, a digital commerce platform, was a notable detractor in interactive media and services. LG H&H, the South Korea-based cosmetics and household goods company, dragged on relative results in personal care products. • Other notable detractors included Isu Petasys, a South Korea-based maker of printed circuit boards, and Taiwan-based Global Unichip, which specializes in application-specific integrated circuits. A holding in Samsung E&A, a South Korea-based engineering company, also hurt relative results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 7, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Investor Class 9.93% 6.52% 7.15% 4/7/16 Regulatory Index MSCI Emerging Markets 11.86% 3.20% 5.92% — Performance Index MSCI Emerging Markets Small Cap 10.55% 10.08% 7.65% —
Performance Inception Date								Apr. 07, 2016
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	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690
Holdings Count | holding	99	99	99	99	99	99	99	99	99
Advisory Fees Paid, Amount	$ 241,521
Investment Company, Portfolio Turnover	70%
Holdings [Text Block]	Fund Holdings
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.
C000167123 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Small Cap Fund
Class Name	I Class
Trading Symbol	AECSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Small Cap Fund for the period of December 1, 2023 to November 30, 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 $125 1.19%
Expenses Paid, Amount	$ 125
Expense Ratio, Percent	1.19%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Small Cap Fund I Class returned 10.17% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI Emerging Markets Small Cap Index. • The industrials sector contributed to relative performance. Key holdings included Gamuda, a Malaysia-based engineering and construction company, and BizLink Holding, a company focused on interconnect solutions. Stock selection in financials also contributed to results. • Notable contributors were MakeMyTrip, an India-based online travel company, and Prestige Estates Projects, an India-based real estate company. India-based PB Fintech, an online platform for insurance and lending products, also helped. • Communication services and consumer staples hurt relative performance. VTEX, a digital commerce platform, was a notable detractor in interactive media and services. LG H&H, the South Korea-based cosmetics and household goods company, dragged on relative results in personal care products. • Other notable detractors included Isu Petasys, a South Korea-based maker of printed circuit boards, and Taiwan-based Global Unichip, which specializes in application-specific integrated circuits. A holding in Samsung E&A, a South Korea-based engineering company, also hurt relative results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 7, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date I Class 10.17% 6.74% 7.37% 4/7/16 Regulatory Index MSCI Emerging Markets 11.86% 3.20% 5.92% — Performance Index MSCI Emerging Markets Small Cap 10.55% 10.08% 7.65% —
Performance Inception Date								Apr. 07, 2016
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	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690
Holdings Count | holding	99	99	99	99	99	99	99	99	99
Advisory Fees Paid, Amount	$ 241,521
Investment Company, Portfolio Turnover	70%
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 95.9% India 27% Exchange-Traded Funds 0.7% Taiwan 20% Short-Term Investments 6.2% China 13% Other Assets and Liabilities (2.8)% South Korea 10% Brazil 5%
C000167124 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Small Cap Fund
Class Name	A Class
Trading Symbol	AECLX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Small Cap Fund for the period of December 1, 2023 to November 30, 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 $172 1.64%
Expenses Paid, Amount	$ 172
Expense Ratio, Percent	1.64%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Small Cap Fund A Class returned 9.59% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI Emerging Markets Small Cap Index. • The industrials sector contributed to relative performance. Key holdings included Gamuda, a Malaysia-based engineering and construction company, and BizLink Holding, a company focused on interconnect solutions. Stock selection in financials also contributed to results. • Notable contributors were MakeMyTrip, an India-based online travel company, and Prestige Estates Projects, an India-based real estate company. India-based PB Fintech, an online platform for insurance and lending products, also helped. • Communication services and consumer staples hurt relative performance. VTEX, a digital commerce platform, was a notable detractor in interactive media and services. LG H&H, the South Korea-based cosmetics and household goods company, dragged on relative results in personal care products. • Other notable detractors included Isu Petasys, a South Korea-based maker of printed circuit boards, and Taiwan-based Global Unichip, which specializes in application-specific integrated circuits. A holding in Samsung E&A, a South Korea-based engineering company, also hurt relative results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 7, 2016 through November 30, 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 Since Inception Inception Date A Class 9.59% 6.24% 6.88% 4/7/16 A Class - with sales charge 3.29% 4.99% 6.15% 4/7/16 Regulatory Index MSCI Emerging Markets 11.86% 3.20% 5.92% — Performance Index MSCI Emerging Markets Small Cap 10.55% 10.08% 7.65% —
Performance Inception Date								Apr. 07, 2016
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	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690
Holdings Count | holding	99	99	99	99	99	99	99	99	99
Advisory Fees Paid, Amount	$ 241,521
Investment Company, Portfolio Turnover	70%
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 95.9% India 27% Exchange-Traded Funds 0.7% Taiwan 20% Short-Term Investments 6.2% China 13% Other Assets and Liabilities (2.8)% South Korea 10% Brazil 5%
C000167119 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Small Cap Fund
Class Name	C Class
Trading Symbol	AECHX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Small Cap Fund for the period of December 1, 2023 to November 30, 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 2.39%
Expenses Paid, Amount	$ 249
Expense Ratio, Percent	2.39%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Small Cap Fund C Class returned 8.76% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI Emerging Markets Small Cap Index. • The industrials sector contributed to relative performance. Key holdings included Gamuda, a Malaysia-based engineering and construction company, and BizLink Holding, a company focused on interconnect solutions. Stock selection in financials also contributed to results. • Notable contributors were MakeMyTrip, an India-based online travel company, and Prestige Estates Projects, an India-based real estate company. India-based PB Fintech, an online platform for insurance and lending products, also helped. • Communication services and consumer staples hurt relative performance. VTEX, a digital commerce platform, was a notable detractor in interactive media and services. LG H&H, the South Korea-based cosmetics and household goods company, dragged on relative results in personal care products. • Other notable detractors included Isu Petasys, a South Korea-based maker of printed circuit boards, and Taiwan-based Global Unichip, which specializes in application-specific integrated circuits. A holding in Samsung E&A, a South Korea-based engineering company, also hurt relative results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 7, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date C Class 8.76% 5.46% 6.08% 4/7/16 Regulatory Index MSCI Emerging Markets 11.86% 3.20% 5.92% — Performance Index MSCI Emerging Markets Small Cap 10.55% 10.08% 7.65% —
Performance Inception Date								Apr. 07, 2016
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	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690
Holdings Count | holding	99	99	99	99	99	99	99	99	99
Advisory Fees Paid, Amount	$ 241,521
Investment Company, Portfolio Turnover	70%
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 95.9% India 27% Exchange-Traded Funds 0.7% Taiwan 20% Short-Term Investments 6.2% China 13% Other Assets and Liabilities (2.8)% South Korea 10% Brazil 5%
C000167120 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Small Cap Fund
Class Name	R Class
Trading Symbol	AECMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Small Cap Fund for the period of December 1, 2023 to November 30, 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 $198 1.89%
Expenses Paid, Amount	$ 198
Expense Ratio, Percent	1.89%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Small Cap Fund R Class returned 9.35% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI Emerging Markets Small Cap Index. • The industrials sector contributed to relative performance. Key holdings included Gamuda, a Malaysia-based engineering and construction company, and BizLink Holding, a company focused on interconnect solutions. Stock selection in financials also contributed to results. • Notable contributors were MakeMyTrip, an India-based online travel company, and Prestige Estates Projects, an India-based real estate company. India-based PB Fintech, an online platform for insurance and lending products, also helped. • Communication services and consumer staples hurt relative performance. VTEX, a digital commerce platform, was a notable detractor in interactive media and services. LG H&H, the South Korea-based cosmetics and household goods company, dragged on relative results in personal care products. • Other notable detractors included Isu Petasys, a South Korea-based maker of printed circuit boards, and Taiwan-based Global Unichip, which specializes in application-specific integrated circuits. A holding in Samsung E&A, a South Korea-based engineering company, also hurt relative results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 7, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R Class 9.35% 5.99% 6.61% 4/7/16 Regulatory Index MSCI Emerging Markets 11.86% 3.20% 5.92% — Performance Index MSCI Emerging Markets Small Cap 10.55% 10.08% 7.65% —
Performance Inception Date								Apr. 07, 2016
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	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690
Holdings Count | holding	99	99	99	99	99	99	99	99	99
Advisory Fees Paid, Amount	$ 241,521
Investment Company, Portfolio Turnover	70%
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 95.9% India 27% Exchange-Traded Funds 0.7% Taiwan 20% Short-Term Investments 6.2% China 13% Other Assets and Liabilities (2.8)% South Korea 10% Brazil 5%
C000167121 [Member]
Shareholder Report [Line Items]
Fund Name	Emerging Markets Small Cap Fund
Class Name	R6 Class
Trading Symbol	AECTX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Emerging Markets Small Cap Fund for the period of December 1, 2023 to November 30, 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 $109 1.04%
Expenses Paid, Amount	$ 109
Expense Ratio, Percent	1.04%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Emerging Markets Small Cap Fund R6 Class returned 10.29% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI Emerging Markets Small Cap Index. • The industrials sector contributed to relative performance. Key holdings included Gamuda, a Malaysia-based engineering and construction company, and BizLink Holding, a company focused on interconnect solutions. Stock selection in financials also contributed to results. • Notable contributors were MakeMyTrip, an India-based online travel company, and Prestige Estates Projects, an India-based real estate company. India-based PB Fintech, an online platform for insurance and lending products, also helped. • Communication services and consumer staples hurt relative performance. VTEX, a digital commerce platform, was a notable detractor in interactive media and services. LG H&H, the South Korea-based cosmetics and household goods company, dragged on relative results in personal care products. • Other notable detractors included Isu Petasys, a South Korea-based maker of printed circuit boards, and Taiwan-based Global Unichip, which specializes in application-specific integrated circuits. A holding in Samsung E&A, a South Korea-based engineering company, also hurt relative results.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 7, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R6 Class 10.29% 6.89% 7.52% 4/7/16 Regulatory Index MSCI Emerging Markets 11.86% 3.20% 5.92% — Performance Index MSCI Emerging Markets Small Cap 10.55% 10.08% 7.65% —
Performance Inception Date								Apr. 07, 2016
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	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690	$ 22,706,690
Holdings Count | holding	99	99	99	99	99	99	99	99	99
Advisory Fees Paid, Amount	$ 241,521
Investment Company, Portfolio Turnover	70%
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 95.9% India 27% Exchange-Traded Funds 0.7% Taiwan 20% Short-Term Investments 6.2% China 13% Other Assets and Liabilities (2.8)% South Korea 10% Brazil 5%
C000018025 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	Investor Class
Trading Symbol	TWGGX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $120 1.08%
Expenses Paid, Amount	$ 120
Expense Ratio, Percent	1.08%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund Investor Class returned 22.03% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year Investor Class 22.03% 10.08% 9.61% MSCI ACWI 26.12% 11.36% 9.28%
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 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.
C000018027 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	I Class
Trading Symbol	AGGIX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $98 0.88%
Expenses Paid, Amount	$ 98
Expense Ratio, Percent	0.88%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund I Class returned 22.36% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year I Class 22.36% 10.30% 9.84% MSCI ACWI 26.12% 11.36% 9.28%
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 3%
C000189780 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	Y Class
Trading Symbol	AGYGX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $81 0.73%
Expenses Paid, Amount	$ 81
Expense Ratio, Percent	0.73%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund Y Class returned 22.53% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Y Class 22.53% 10.47% 12.07% 4/10/17 MSCI ACWI 26.12% 11.36% 10.90% —
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 3%
C000018026 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	A Class
Trading Symbol	AGGRX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $147 1.33%
Expenses Paid, Amount	$ 147
Expense Ratio, Percent	1.33%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund A Class returned 21.77% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 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 21.77% 9.82% 9.34% A Class - with sales charge 14.77% 8.52% 8.70% MSCI ACWI 26.12% 11.36% 9.28%
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 3%
C000018030 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	C Class
Trading Symbol	AGLCX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $230 2.08%
Expenses Paid, Amount	$ 230
Expense Ratio, Percent	2.08%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund C Class returned 20.88% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year C Class 20.88% 9.01% 8.53% MSCI ACWI 26.12% 11.36% 9.28%
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 3%
C000018031 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	R Class
Trading Symbol	AGORX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $175 1.58%
Expenses Paid, Amount	$ 175
Expense Ratio, Percent	1.58%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund R Class returned 21.48% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R Class 21.48% 9.54% 9.06% MSCI ACWI 26.12% 11.36% 9.28%
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 3%
C000189781 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	R5 Class
Trading Symbol	AGFGX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $98 0.88%
Expenses Paid, Amount	$ 98
Expense Ratio, Percent	0.88%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund R5 Class returned 22.25% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R5 Class 22.25% 10.30% 11.90% 4/10/17 MSCI ACWI 26.12% 11.36% 10.90% —
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 3%
C000131623 [Member]
Shareholder Report [Line Items]
Fund Name	Focused Global Growth Fund
Class Name	R6 Class
Trading Symbol	AGGDX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused Global Growth Fund for the period of December 1, 2023 to November 30, 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 $81 0.73%
Expenses Paid, Amount	$ 81
Expense Ratio, Percent	0.73%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused Global Growth Fund R6 Class returned 22.48% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Index. • Security selection among energy stocks contributed to relative results. The sector lagged the broader market due to low oil prices, but the fund's position in pipeline infrastructure provider The Williams Cos. contributed to performance. The fund also benefited from having no exposure to the underperforming materials sector. • Notable individual contributors during the period included chipmaker NVIDIA, a beneficiary of the artificial intelligence infrastructure build-out, and aircraft parts manufacturer Howmet Aerospace. Auto insurance carrier Progressive also contributed. • Security selection and being overweight in the underperforming real estate sector hurt relative performance. Detractors included cell tower leasing company SBA Communications and Prologis, an industrial real estate investment trust. In the financials sector, positions in B3 Brasil Bolsa Balcao and Hong Kong Exchanges & Clearing hurt relative returns. • Top individual detractors from relative performance included pharmaceutical services provider ICON, semiconductor materials company Entegris and enterprise software developer Workday.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R6 Class 22.48% 10.46% 10.00% MSCI ACWI 26.12% 11.36% 9.28%
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	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273	$ 639,759,273
Holdings Count | holding	36	36	36	36	36	36	36	36	36
Advisory Fees Paid, Amount	$ 6,217,220
Investment Company, Portfolio Turnover	72%
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 99.6% United States 69% Short-Term Investments 0.4% United Kingdom 6% Other Assets and Liabilities 0.0% Japan 6% Denmark 3% France 3%
C000167113 [Member]
Shareholder Report [Line Items]
Fund Name	Focused International Growth Fund
Class Name	Investor Class
Trading Symbol	AFCNX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused International Growth Fund for the period of December 1, 2023 to November 30, 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 $116 1.09%
Expenses Paid, Amount	$ 116
Expense Ratio, Percent	1.09%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused International Growth Fund Investor Class returned 12.49% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI ACWI ex-U.S. Index. • Amid high spending on artificial intelligence infrastructure, the fund's position in the information technology sector was the top contributor to relative performance. Key holdings included chipmakers ARM Holdings and Taiwan Semiconductor Manufacturing Co. In the consumer discretionary sector, sportswear maker On Holding and online travel company MakeMyTrip contributed. • Other notable individual contributors included enterprise software developer SAP, investment bank Barclays and Schneider Electric, a specialist in energy management and automation. • Security selection in the financials sector weighed on relative returns. Key holdings included financial services companies Edenred and Adyen, as well as insurer AIA Group. Holdings in health care also hurt relative returns. Detractors included Sartorius, a pharmaceuticals and laboratory supplier, and ICON, an outsourced clinical trial and services company. • Other notable individual detractors included wine and spirits producer Davide Campari-Milano, semiconductor equipment company ASML Holding and BayCurrent, an information technology consulting firm.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Investor Class 12.49% 4.79% 7.25% 3/29/16 MSCI ACWI ex USA 13.03% 5.40% 6.76% —
Performance Inception Date							Mar. 29, 2016
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	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952
Holdings Count | holding	45	45	45	45	45	45	45	45	45
Advisory Fees Paid, Amount	$ 478,302
Investment Company, Portfolio Turnover	82%
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 96.8% Japan 19% Short-Term Investments 9.2% United Kingdom 18% Other Assets and Liabilities (6.0)% Taiwan 6% France 6% Netherlands 6%
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.
C000167114 [Member]
Shareholder Report [Line Items]
Fund Name	Focused International Growth Fund
Class Name	I Class
Trading Symbol	AFCSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused International Growth Fund for the period of December 1, 2023 to November 30, 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 $95 0.89%
Expenses Paid, Amount	$ 95
Expense Ratio, Percent	0.89%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused International Growth Fund I Class returned 12.72% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI ACWI ex-U.S. Index. • Amid high spending on artificial intelligence infrastructure, the fund's position in the information technology sector was the top contributor to relative performance. Key holdings included chipmakers ARM Holdings and Taiwan Semiconductor Manufacturing Co. In the consumer discretionary sector, sportswear maker On Holding and online travel company MakeMyTrip contributed. • Other notable individual contributors included enterprise software developer SAP, investment bank Barclays and Schneider Electric, a specialist in energy management and automation. • Security selection in the financials sector weighed on relative returns. Key holdings included financial services companies Edenred and Adyen, as well as insurer AIA Group. Holdings in health care also hurt relative returns. Detractors included Sartorius, a pharmaceuticals and laboratory supplier, and ICON, an outsourced clinical trial and services company. • Other notable individual detractors included wine and spirits producer Davide Campari-Milano, semiconductor equipment company ASML Holding and BayCurrent, an information technology consulting firm.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date I Class 12.72% 5.00% 7.47% 3/29/16 MSCI ACWI ex USA 13.03% 5.40% 6.76% —
Performance Inception Date							Mar. 29, 2016
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	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952
Holdings Count | holding	45	45	45	45	45	45	45	45	45
Advisory Fees Paid, Amount	$ 478,302
Investment Company, Portfolio Turnover	82%
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 96.8% Japan 19% Short-Term Investments 9.2% United Kingdom 18% Other Assets and Liabilities (6.0)% Taiwan 6% France 6% Netherlands 6%
C000167115 [Member]
Shareholder Report [Line Items]
Fund Name	Focused International Growth Fund
Class Name	A Class
Trading Symbol	AFCLX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused International Growth Fund for the period of December 1, 2023 to November 30, 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 $142 1.34%
Expenses Paid, Amount	$ 142
Expense Ratio, Percent	1.34%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused International Growth Fund A Class returned 12.23% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI ACWI ex-U.S. Index. • Amid high spending on artificial intelligence infrastructure, the fund's position in the information technology sector was the top contributor to relative performance. Key holdings included chipmakers ARM Holdings and Taiwan Semiconductor Manufacturing Co. In the consumer discretionary sector, sportswear maker On Holding and online travel company MakeMyTrip contributed. • Other notable individual contributors included enterprise software developer SAP, investment bank Barclays and Schneider Electric, a specialist in energy management and automation. • Security selection in the financials sector weighed on relative returns. Key holdings included financial services companies Edenred and Adyen, as well as insurer AIA Group. Holdings in health care also hurt relative returns. Detractors included Sartorius, a pharmaceuticals and laboratory supplier, and ICON, an outsourced clinical trial and services company. • Other notable individual detractors included wine and spirits producer Davide Campari-Milano, semiconductor equipment company ASML Holding and BayCurrent, an information technology consulting firm.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 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 Since Inception Inception Date A Class 12.23% 4.52% 6.98% 3/29/16 A Class - with sales charge 5.78% 3.29% 6.25% 3/29/16 MSCI ACWI ex USA 13.03% 5.40% 6.76% —
Performance Inception Date							Mar. 29, 2016
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	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952
Holdings Count | holding	45	45	45	45	45	45	45	45	45
Advisory Fees Paid, Amount	$ 478,302
Investment Company, Portfolio Turnover	82%
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 96.8% Japan 19% Short-Term Investments 9.2% United Kingdom 18% Other Assets and Liabilities (6.0)% Taiwan 6% France 6% Netherlands 6%
C000167116 [Member]
Shareholder Report [Line Items]
Fund Name	Focused International Growth Fund
Class Name	C Class
Trading Symbol	AFCHX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused International Growth Fund for the period of December 1, 2023 to November 30, 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 $221 2.09%
Expenses Paid, Amount	$ 221
Expense Ratio, Percent	2.09%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused International Growth Fund C Class returned 11.38% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI ACWI ex-U.S. Index. • Amid high spending on artificial intelligence infrastructure, the fund's position in the information technology sector was the top contributor to relative performance. Key holdings included chipmakers ARM Holdings and Taiwan Semiconductor Manufacturing Co. In the consumer discretionary sector, sportswear maker On Holding and online travel company MakeMyTrip contributed. • Other notable individual contributors included enterprise software developer SAP, investment bank Barclays and Schneider Electric, a specialist in energy management and automation. • Security selection in the financials sector weighed on relative returns. Key holdings included financial services companies Edenred and Adyen, as well as insurer AIA Group. Holdings in health care also hurt relative returns. Detractors included Sartorius, a pharmaceuticals and laboratory supplier, and ICON, an outsourced clinical trial and services company. • Other notable individual detractors included wine and spirits producer Davide Campari-Milano, semiconductor equipment company ASML Holding and BayCurrent, an information technology consulting firm.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date C Class 11.38% 3.74% 6.18% 3/29/16 MSCI ACWI ex USA 13.03% 5.40% 6.76% —
Performance Inception Date							Mar. 29, 2016
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	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952
Holdings Count | holding	45	45	45	45	45	45	45	45	45
Advisory Fees Paid, Amount	$ 478,302
Investment Company, Portfolio Turnover	82%
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 96.8% Japan 19% Short-Term Investments 9.2% United Kingdom 18% Other Assets and Liabilities (6.0)% Taiwan 6% France 6% Netherlands 6%
C000167117 [Member]
Shareholder Report [Line Items]
Fund Name	Focused International Growth Fund
Class Name	R Class
Trading Symbol	AFCWX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused International Growth Fund for the period of December 1, 2023 to November 30, 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 $168 1.59%
Expenses Paid, Amount	$ 168
Expense Ratio, Percent	1.59%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused International Growth Fund R Class returned 11.92% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI ACWI ex-U.S. Index. • Amid high spending on artificial intelligence infrastructure, the fund's position in the information technology sector was the top contributor to relative performance. Key holdings included chipmakers ARM Holdings and Taiwan Semiconductor Manufacturing Co. In the consumer discretionary sector, sportswear maker On Holding and online travel company MakeMyTrip contributed. • Other notable individual contributors included enterprise software developer SAP, investment bank Barclays and Schneider Electric, a specialist in energy management and automation. • Security selection in the financials sector weighed on relative returns. Key holdings included financial services companies Edenred and Adyen, as well as insurer AIA Group. Holdings in health care also hurt relative returns. Detractors included Sartorius, a pharmaceuticals and laboratory supplier, and ICON, an outsourced clinical trial and services company. • Other notable individual detractors included wine and spirits producer Davide Campari-Milano, semiconductor equipment company ASML Holding and BayCurrent, an information technology consulting firm.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R Class 11.92% 4.27% 6.71% 3/29/16 MSCI ACWI ex USA 13.03% 5.40% 6.76% —
Performance Inception Date							Mar. 29, 2016
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	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952
Holdings Count | holding	45	45	45	45	45	45	45	45	45
Advisory Fees Paid, Amount	$ 478,302
Investment Company, Portfolio Turnover	82%
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 96.8% Japan 19% Short-Term Investments 9.2% United Kingdom 18% Other Assets and Liabilities (6.0)% Taiwan 6% France 6% Netherlands 6%
C000167118 [Member]
Shareholder Report [Line Items]
Fund Name	Focused International Growth Fund
Class Name	R6 Class
Trading Symbol	AFCMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused International Growth Fund for the period of December 1, 2023 to November 30, 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 $79 0.74%
Expenses Paid, Amount	$ 79
Expense Ratio, Percent	0.74%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused International Growth Fund R6 Class returned 12.94% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI ACWI ex-U.S. Index. • Amid high spending on artificial intelligence infrastructure, the fund's position in the information technology sector was the top contributor to relative performance. Key holdings included chipmakers ARM Holdings and Taiwan Semiconductor Manufacturing Co. In the consumer discretionary sector, sportswear maker On Holding and online travel company MakeMyTrip contributed. • Other notable individual contributors included enterprise software developer SAP, investment bank Barclays and Schneider Electric, a specialist in energy management and automation. • Security selection in the financials sector weighed on relative returns. Key holdings included financial services companies Edenred and Adyen, as well as insurer AIA Group. Holdings in health care also hurt relative returns. Detractors included Sartorius, a pharmaceuticals and laboratory supplier, and ICON, an outsourced clinical trial and services company. • Other notable individual detractors included wine and spirits producer Davide Campari-Milano, semiconductor equipment company ASML Holding and BayCurrent, an information technology consulting firm.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R6 Class 12.94% 5.17% 7.63% 3/29/16 MSCI ACWI ex USA 13.03% 5.40% 6.76% —
Performance Inception Date							Mar. 29, 2016
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	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952
Holdings Count | holding	45	45	45	45	45	45	45	45	45
Advisory Fees Paid, Amount	$ 478,302
Investment Company, Portfolio Turnover	82%
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 96.8% Japan 19% Short-Term Investments 9.2% United Kingdom 18% Other Assets and Liabilities (6.0)% Taiwan 6% France 6% Netherlands 6%
C000212502 [Member]
Shareholder Report [Line Items]
Fund Name	Focused International Growth Fund
Class Name	G Class
Trading Symbol	AFCGX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Focused International Growth Fund for the period of December 1, 2023 to November 30, 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 $0 0.00%
Expenses Paid, Amount	$ 0
Expense Ratio, Percent	0%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Focused International Growth Fund G Class returned 13.75% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI ACWI ex-U.S. Index. • Amid high spending on artificial intelligence infrastructure, the fund's position in the information technology sector was the top contributor to relative performance. Key holdings included chipmakers ARM Holdings and Taiwan Semiconductor Manufacturing Co. In the consumer discretionary sector, sportswear maker On Holding and online travel company MakeMyTrip contributed. • Other notable individual contributors included enterprise software developer SAP, investment bank Barclays and Schneider Electric, a specialist in energy management and automation. • Security selection in the financials sector weighed on relative returns. Key holdings included financial services companies Edenred and Adyen, as well as insurer AIA Group. Holdings in health care also hurt relative returns. Detractors included Sartorius, a pharmaceuticals and laboratory supplier, and ICON, an outsourced clinical trial and services company. • Other notable individual detractors included wine and spirits producer Davide Campari-Milano, semiconductor equipment company ASML Holding and BayCurrent, an information technology consulting firm.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 1, 2019 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date G Class 13.75% 5.96% 7.39% 4/1/19 MSCI ACWI ex USA 13.03% 5.40% 5.55% —
Performance Inception Date				Apr. 01, 2019
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	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952	$ 108,581,952
Holdings Count | holding	45	45	45	45	45	45	45	45	45
Advisory Fees Paid, Amount	$ 478,302
Investment Company, Portfolio Turnover	82%
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 96.8% Japan 19% Short-Term Investments 9.2% United Kingdom 18% Other Assets and Liabilities (6.0)% Taiwan 6% France 6% Netherlands 6%
C000167125 [Member]
Shareholder Report [Line Items]
Fund Name	Global Small Cap Fund
Class Name	Investor Class
Trading Symbol	AGCVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Global Small Cap Fund for the period of December 1, 2023 to November 30, 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 $126 1.11%
Expenses Paid, Amount	$ 126
Expense Ratio, Percent	1.11%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Global Small Cap Fund Investor Class returned 27.64% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Small Cap Index. • The health care sector drove relative performance as did materials and consumer discretionary. U.S.-based biopharmaceutical company ADMA Biologics and Natera, a U.S.-based genetic testing business, contributed in biotechnology. Other notables included Carpenter Technology, a U.S.-based provider of specialty metals, and Asics, the Japan-based shoe and apparel company. • U.S.-based Modine Manufacturing, which specializes in thermal management products, and RadNet, a U.S.-based diagnostic imaging company, were among the top individual contributors, along with U.S.-based boutique investment bank Evercore. • The energy and industrials sectors were the biggest drags on relative performance. Kosmos Energy, a U.S.-based oil and gas company, was a notable detractor in oil, gas and consumable fuels. Airtac International Group, a Taiwan-based pneumatic equipment company, weighed on relative returns. • Other notable individual detractors included DoubleVerify Holdings, a digital media measurement and analytics company; Progyny, a provider of reproductive and women's health benefits; and Alphatec Holdings, which specializes in solutions for spinal disorders.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Investor Class 27.64% 10.79% 12.75% 3/29/16 Regulatory Index MSCI ACWI 26.12% 11.36% 11.41% — Performance Index MSCI ACWI Small Cap 23.78% 8.64% 9.28% —
Performance Inception Date							Mar. 29, 2016
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	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570
Holdings Count | holding	139	139	139	139	139	139	139	139	139
Advisory Fees Paid, Amount	$ 817,858
Investment Company, Portfolio Turnover	109%
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 100.1% United States 61% Exchange-Traded Funds 0.0% Canada 10% Short-Term Investments 3.0% Japan 6% Other Assets and Liabilities (3.1)% India 4% United Kingdom 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.
C000167126 [Member]
Shareholder Report [Line Items]
Fund Name	Global Small Cap Fund
Class Name	I Class
Trading Symbol	AGCSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Global Small Cap Fund for the period of December 1, 2023 to November 30, 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 $104 0.91%
Expenses Paid, Amount	$ 104
Expense Ratio, Percent	0.91%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Global Small Cap Fund I Class returned 27.91% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Small Cap Index. • The health care sector drove relative performance as did materials and consumer discretionary. U.S.-based biopharmaceutical company ADMA Biologics and Natera, a U.S.-based genetic testing business, contributed in biotechnology. Other notables included Carpenter Technology, a U.S.-based provider of specialty metals, and Asics, the Japan-based shoe and apparel company. • U.S.-based Modine Manufacturing, which specializes in thermal management products, and RadNet, a U.S.-based diagnostic imaging company, were among the top individual contributors, along with U.S.-based boutique investment bank Evercore. • The energy and industrials sectors were the biggest drags on relative performance. Kosmos Energy, a U.S.-based oil and gas company, was a notable detractor in oil, gas and consumable fuels. Airtac International Group, a Taiwan-based pneumatic equipment company, weighed on relative returns. • Other notable individual detractors included DoubleVerify Holdings, a digital media measurement and analytics company; Progyny, a provider of reproductive and women's health benefits; and Alphatec Holdings, which specializes in solutions for spinal disorders.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date I Class 27.91% 11.02% 12.98% 3/29/16 Regulatory Index MSCI ACWI 26.12% 11.36% 11.41% — Performance Index MSCI ACWI Small Cap 23.78% 8.64% 9.28% —
Performance Inception Date							Mar. 29, 2016
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	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570
Holdings Count | holding	139	139	139	139	139	139	139	139	139
Advisory Fees Paid, Amount	$ 817,858
Investment Company, Portfolio Turnover	109%
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 100.1% United States 61% Exchange-Traded Funds 0.0% Canada 10% Short-Term Investments 3.0% Japan 6% Other Assets and Liabilities (3.1)% India 4% United Kingdom 3%
C000167127 [Member]
Shareholder Report [Line Items]
Fund Name	Global Small Cap Fund
Class Name	A Class
Trading Symbol	AGCLX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Global Small Cap Fund for the period of December 1, 2023 to November 30, 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 $155 1.36%
Expenses Paid, Amount	$ 155
Expense Ratio, Percent	1.36%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Global Small Cap Fund A Class returned 27.40% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Small Cap Index. • The health care sector drove relative performance as did materials and consumer discretionary. U.S.-based biopharmaceutical company ADMA Biologics and Natera, a U.S.-based genetic testing business, contributed in biotechnology. Other notables included Carpenter Technology, a U.S.-based provider of specialty metals, and Asics, the Japan-based shoe and apparel company. • U.S.-based Modine Manufacturing, which specializes in thermal management products, and RadNet, a U.S.-based diagnostic imaging company, were among the top individual contributors, along with U.S.-based boutique investment bank Evercore. • The energy and industrials sectors were the biggest drags on relative performance. Kosmos Energy, a U.S.-based oil and gas company, was a notable detractor in oil, gas and consumable fuels. Airtac International Group, a Taiwan-based pneumatic equipment company, weighed on relative returns. • Other notable individual detractors included DoubleVerify Holdings, a digital media measurement and analytics company; Progyny, a provider of reproductive and women's health benefits; and Alphatec Holdings, which specializes in solutions for spinal disorders.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 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 Since Inception Inception Date A Class 27.40% 10.52% 12.48% 3/29/16 A Class - with sales charge 20.07% 9.22% 11.71% 3/29/16 Regulatory Index MSCI ACWI 26.12% 11.36% 11.41% — Performance Index MSCI ACWI Small Cap 23.78% 8.64% 9.28% —
Performance Inception Date							Mar. 29, 2016
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	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570
Holdings Count | holding	139	139	139	139	139	139	139	139	139
Advisory Fees Paid, Amount	$ 817,858
Investment Company, Portfolio Turnover	109%
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 100.1% United States 61% Exchange-Traded Funds 0.0% Canada 10% Short-Term Investments 3.0% Japan 6% Other Assets and Liabilities (3.1)% India 4% United Kingdom 3%
C000167128 [Member]
Shareholder Report [Line Items]
Fund Name	Global Small Cap Fund
Class Name	C Class
Trading Symbol	AGCHX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Global Small Cap Fund for the period of December 1, 2023 to November 30, 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 $239 2.11%
Expenses Paid, Amount	$ 239
Expense Ratio, Percent	2.11%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Global Small Cap Fund C Class returned 26.44% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Small Cap Index. • The health care sector drove relative performance as did materials and consumer discretionary. U.S.-based biopharmaceutical company ADMA Biologics and Natera, a U.S.-based genetic testing business, contributed in biotechnology. Other notables included Carpenter Technology, a U.S.-based provider of specialty metals, and Asics, the Japan-based shoe and apparel company. • U.S.-based Modine Manufacturing, which specializes in thermal management products, and RadNet, a U.S.-based diagnostic imaging company, were among the top individual contributors, along with U.S.-based boutique investment bank Evercore. • The energy and industrials sectors were the biggest drags on relative performance. Kosmos Energy, a U.S.-based oil and gas company, was a notable detractor in oil, gas and consumable fuels. Airtac International Group, a Taiwan-based pneumatic equipment company, weighed on relative returns. • Other notable individual detractors included DoubleVerify Holdings, a digital media measurement and analytics company; Progyny, a provider of reproductive and women's health benefits; and Alphatec Holdings, which specializes in solutions for spinal disorders.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date C Class 26.44% 9.68% 11.63% 3/29/16 Regulatory Index MSCI ACWI 26.12% 11.36% 11.41% — Performance Index MSCI ACWI Small Cap 23.78% 8.64% 9.28% —
Performance Inception Date							Mar. 29, 2016
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	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570
Holdings Count | holding	139	139	139	139	139	139	139	139	139
Advisory Fees Paid, Amount	$ 817,858
Investment Company, Portfolio Turnover	109%
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 100.1% United States 61% Exchange-Traded Funds 0.0% Canada 10% Short-Term Investments 3.0% Japan 6% Other Assets and Liabilities (3.1)% India 4% United Kingdom 3%
C000167129 [Member]
Shareholder Report [Line Items]
Fund Name	Global Small Cap Fund
Class Name	R Class
Trading Symbol	AGCWX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Global Small Cap Fund for the period of December 1, 2023 to November 30, 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 $183 1.61%
Expenses Paid, Amount	$ 183
Expense Ratio, Percent	1.61%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Global Small Cap Fund R Class returned 27.05% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Small Cap Index. • The health care sector drove relative performance as did materials and consumer discretionary. U.S.-based biopharmaceutical company ADMA Biologics and Natera, a U.S.-based genetic testing business, contributed in biotechnology. Other notables included Carpenter Technology, a U.S.-based provider of specialty metals, and Asics, the Japan-based shoe and apparel company. • U.S.-based Modine Manufacturing, which specializes in thermal management products, and RadNet, a U.S.-based diagnostic imaging company, were among the top individual contributors, along with U.S.-based boutique investment bank Evercore. • The energy and industrials sectors were the biggest drags on relative performance. Kosmos Energy, a U.S.-based oil and gas company, was a notable detractor in oil, gas and consumable fuels. Airtac International Group, a Taiwan-based pneumatic equipment company, weighed on relative returns. • Other notable individual detractors included DoubleVerify Holdings, a digital media measurement and analytics company; Progyny, a provider of reproductive and women's health benefits; and Alphatec Holdings, which specializes in solutions for spinal disorders.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R Class 27.05% 10.23% 12.19% 3/29/16 Regulatory Index MSCI ACWI 26.12% 11.36% 11.41% — Performance Index MSCI ACWI Small Cap 23.78% 8.64% 9.28% —
Performance Inception Date							Mar. 29, 2016
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	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570
Holdings Count | holding	139	139	139	139	139	139	139	139	139
Advisory Fees Paid, Amount	$ 817,858
Investment Company, Portfolio Turnover	109%
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 100.1% United States 61% Exchange-Traded Funds 0.0% Canada 10% Short-Term Investments 3.0% Japan 6% Other Assets and Liabilities (3.1)% India 4% United Kingdom 3%
C000167130 [Member]
Shareholder Report [Line Items]
Fund Name	Global Small Cap Fund
Class Name	R6 Class
Trading Symbol	AGCTX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Global Small Cap Fund for the period of December 1, 2023 to November 30, 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 $87 0.76%
Expenses Paid, Amount	$ 87
Expense Ratio, Percent	0.76%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Global Small Cap Fund R6 Class returned 28.10% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI Small Cap Index. • The health care sector drove relative performance as did materials and consumer discretionary. U.S.-based biopharmaceutical company ADMA Biologics and Natera, a U.S.-based genetic testing business, contributed in biotechnology. Other notables included Carpenter Technology, a U.S.-based provider of specialty metals, and Asics, the Japan-based shoe and apparel company. • U.S.-based Modine Manufacturing, which specializes in thermal management products, and RadNet, a U.S.-based diagnostic imaging company, were among the top individual contributors, along with U.S.-based boutique investment bank Evercore. • The energy and industrials sectors were the biggest drags on relative performance. Kosmos Energy, a U.S.-based oil and gas company, was a notable detractor in oil, gas and consumable fuels. Airtac International Group, a Taiwan-based pneumatic equipment company, weighed on relative returns. • Other notable individual detractors included DoubleVerify Holdings, a digital media measurement and analytics company; Progyny, a provider of reproductive and women's health benefits; and Alphatec Holdings, which specializes in solutions for spinal disorders.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 29, 2016 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R6 Class 28.10% 11.18% 13.15% 3/29/16 Regulatory Index MSCI ACWI 26.12% 11.36% 11.41% — Performance Index MSCI ACWI Small Cap 23.78% 8.64% 9.28% —
Performance Inception Date							Mar. 29, 2016
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	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570	$ 83,600,570
Holdings Count | holding	139	139	139	139	139	139	139	139	139
Advisory Fees Paid, Amount	$ 817,858
Investment Company, Portfolio Turnover	109%
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 100.1% United States 61% Exchange-Traded Funds 0.0% Canada 10% Short-Term Investments 3.0% Japan 6% Other Assets and Liabilities (3.1)% India 4% United Kingdom 3%
C000018035 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	Investor Class
Trading Symbol	TWIEX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 1.24%
Expenses Paid, Amount	$ 131
Expense Ratio, Percent	1.24%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund Investor Class returned 11.19% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year Investor Class 11.19% 4.69% 4.62% MSCI EAFE 11.88% 5.89% 5.07% MSCI EAFE Growth 10.95% 5.18% 5.76%
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
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.
C000018037 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	I Class
Trading Symbol	TGRIX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $110 1.04%
Expenses Paid, Amount	$ 110
Expense Ratio, Percent	1.04%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund I Class returned 11.41% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year I Class 11.41% 4.90% 4.83% MSCI EAFE 11.88% 5.89% 5.07% MSCI EAFE Growth 10.95% 5.18% 5.76%
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000189783 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	Y Class
Trading Symbol	ATYGX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $94 0.89%
Expenses Paid, Amount	$ 94
Expense Ratio, Percent	0.89%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund Y Class returned 11.54% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Y Class 11.54% 5.05% 6.65% 4/10/17 MSCI EAFE 11.88% 5.89% 6.26% — MSCI EAFE Growth 10.95% 5.18% 6.84% —
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000018036 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	A Class
Trading Symbol	TWGAX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $157 1.49%
Expenses Paid, Amount	$ 157
Expense Ratio, Percent	1.49%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund A Class returned 10.87% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 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 10.87% 4.42% 4.36% A Class - with sales charge 4.50% 3.19% 3.74% MSCI EAFE 11.88% 5.89% 5.07% MSCI EAFE Growth 10.95% 5.18% 5.76%
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000018040 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	C Class
Trading Symbol	AIWCX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $235 2.24%
Expenses Paid, Amount	$ 235
Expense Ratio, Percent	2.24%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund C Class returned 10.13% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year C Class 10.13% 3.65% 3.58% MSCI EAFE 11.88% 5.89% 5.07% MSCI EAFE Growth 10.95% 5.18% 5.76%
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000018041 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	R Class
Trading Symbol	ATGRX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $183 1.74%
Expenses Paid, Amount	$ 183
Expense Ratio, Percent	1.74%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund R Class returned 10.66% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R Class 10.66% 4.17% 4.10% MSCI EAFE 11.88% 5.89% 5.07% MSCI EAFE Growth 10.95% 5.18% 5.76%
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000189784 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	R5 Class
Trading Symbol	ATGGX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $110 1.04%
Expenses Paid, Amount	$ 110
Expense Ratio, Percent	1.04%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund R5 Class returned 11.40% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 10, 2017 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date R5 Class 11.40% 4.89% 6.49% 4/10/17 MSCI EAFE 11.88% 5.89% 6.26% — MSCI EAFE Growth 10.95% 5.18% 6.84% —
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000131624 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	R6 Class
Trading Symbol	ATGDX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $94 0.89%
Expenses Paid, Amount	$ 94
Expense Ratio, Percent	0.89%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund R6 Class returned 11.56% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R6 Class 11.56% 5.03% 4.98% MSCI EAFE 11.88% 5.89% 5.07% MSCI EAFE Growth 10.95% 5.18% 5.76%
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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000236496 [Member]
Shareholder Report [Line Items]
Fund Name	International Growth Fund
Class Name	G Class
Trading Symbol	ACAEX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Growth Fund for the period of December 1, 2023 to November 30, 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 $2 0.02%
Expenses Paid, Amount	$ 2
Expense Ratio, Percent	0.02%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Growth Fund G Class returned 12.54% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Index. • The fund's position in the industrials sector boosted relative performance. Holdings included the top individual contributor to relative returns, Mitsubishi Heavy Industries, a manufacturer of electricity-generating gas turbines. In the consumer discretionary sector, the fund benefited from owning travel and hospitality-related businesses and avoiding the underperforming automobiles industry. • Amid rising investment in artificial intelligence, semiconductor companies ARM Holdings and Taiwan Semiconductor Manufacturing Co. were among the top individual contributors to performance. Sportswear maker On Holding also lifted relative results. • The fund's underweight position and security selection in the financials sector weighed on relative returns. Detractors included digital payment solutions company Edenred and insurer AIA Group. Positioning in the communication services sector, most notably a stake in wireless telecommunications infrastructure and services company Cellnex Telecom, also hurt relative performance. • Notable individual detractors from relative returns included information technology consulting firm BayCurrent and Davide Campari-Milano, a producer of wine and spirits. ICON, an outsourced clinical trial and services company, and Infineon Technologies, a maker of semiconductors for the automotive and industrial sectors, also detracted.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 1, 2022 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year Since Inception Inception Date G Class 12.54% 1.91% 4/1/22 MSCI EAFE 11.88% 5.30% — MSCI EAFE Growth 10.95% 3.16% —
Performance Inception Date		Apr. 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	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559	$ 2,827,786,559
Holdings Count | holding	97	97	97	97	97	97	97	97	97
Advisory Fees Paid, Amount	$ 15,263,452
Investment Company, Portfolio Turnover	56%
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 97.8% Japan 21% Short-Term Investments 3.2% United Kingdom 18% Other Assets and Liabilities (1.0)% France 12% Germany 7% Switzerland 6%
C000018042 [Member]
Shareholder Report [Line Items]
Fund Name	International Opportunities Fund
Class Name	Investor Class
Trading Symbol	AIOIX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Opportunities Fund for the period of December 1, 2023 to November 30, 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 $162 1.53%
Expenses Paid, Amount	$ 162
Expense Ratio, Percent	1.53%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Opportunities Fund Investor Class returned 12.01% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Small Cap Growth Index. • The consumer discretionary and information technology sectors were the leading drivers of relative performance. Sanrio, the Japan-based company behind Hello Kitty, was a notable contributor in specialty retail, along with Asics, the Japan-based shoe and activewear company, and Kalyan Jewellers India, a multinational jewelry business. • Other notable individual contributors included Pro Medicus, an Australia-based health care software company, and Max Healthcare Institute, an India-based health care company. • Relative performance was hurt by the consumer staples and communication services sectors. Japan-based Kotobuki Spirits, a maker of sweets, dragged on relative results in food products, as did JYP Entertainment, the South Korea-based music business, in entertainment. • FP Partner, an insurance and financial services firm headquartered in Japan, was another notable individual detractor from relative performance. Paladin Energy, an Australia-based uranium production company, and Taiwan-based Gold Circuit Electronics, which focuses on printed circuit boards, also lagged.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year Investor Class 12.01% 3.00% 4.94% Regulatory Index MSCI ACWI ex USA 13.03% 5.40% 4.62% Performance Index MSCI ACWI ex USA Small Cap Growth 11.62% 5.09% 5.74%
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	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289
Holdings Count | holding	129	129	129	129	129	129	129	129	129
Advisory Fees Paid, Amount	$ 6,573,126
Investment Company, Portfolio Turnover	135%
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 99.6% Japan 20% Exchange-Traded Funds 0.3% Canada 13% Short-Term Investments 1.9% India 10% Other Assets and Liabilities (1.8)% United Kingdom 8% Australia 8%
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.
C000018043 [Member]
Shareholder Report [Line Items]
Fund Name	International Opportunities Fund
Class Name	I Class
Trading Symbol	ACIOX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Opportunities Fund for the period of December 1, 2023 to November 30, 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 $141 1.33%
Expenses Paid, Amount	$ 141
Expense Ratio, Percent	1.33%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Opportunities Fund I Class returned 12.27% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Small Cap Growth Index. • The consumer discretionary and information technology sectors were the leading drivers of relative performance. Sanrio, the Japan-based company behind Hello Kitty, was a notable contributor in specialty retail, along with Asics, the Japan-based shoe and activewear company, and Kalyan Jewellers India, a multinational jewelry business. • Other notable individual contributors included Pro Medicus, an Australia-based health care software company, and Max Healthcare Institute, an India-based health care company. • Relative performance was hurt by the consumer staples and communication services sectors. Japan-based Kotobuki Spirits, a maker of sweets, dragged on relative results in food products, as did JYP Entertainment, the South Korea-based music business, in entertainment. • FP Partner, an insurance and financial services firm headquartered in Japan, was another notable individual detractor from relative performance. Paladin Energy, an Australia-based uranium production company, and Taiwan-based Gold Circuit Electronics, which focuses on printed circuit boards, also lagged.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year I Class 12.27% 3.20% 5.13% Regulatory Index MSCI ACWI ex USA 13.03% 5.40% 4.62% Performance Index MSCI ACWI ex USA Small Cap Growth 11.62% 5.09% 5.74%
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	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289
Holdings Count | holding	129	129	129	129	129	129	129	129	129
Advisory Fees Paid, Amount	$ 6,573,126
Investment Company, Portfolio Turnover	135%
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 99.6% Japan 20% Exchange-Traded Funds 0.3% Canada 13% Short-Term Investments 1.9% India 10% Other Assets and Liabilities (1.8)% United Kingdom 8% Australia 8%
C000088079 [Member]
Shareholder Report [Line Items]
Fund Name	International Opportunities Fund
Class Name	A Class
Trading Symbol	AIVOX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Opportunities Fund for the period of December 1, 2023 to November 30, 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 $188 1.78%
Expenses Paid, Amount	$ 188
Expense Ratio, Percent	1.78%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Opportunities Fund A Class returned 11.71% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Small Cap Growth Index. • The consumer discretionary and information technology sectors were the leading drivers of relative performance. Sanrio, the Japan-based company behind Hello Kitty, was a notable contributor in specialty retail, along with Asics, the Japan-based shoe and activewear company, and Kalyan Jewellers India, a multinational jewelry business. • Other notable individual contributors included Pro Medicus, an Australia-based health care software company, and Max Healthcare Institute, an India-based health care company. • Relative performance was hurt by the consumer staples and communication services sectors. Japan-based Kotobuki Spirits, a maker of sweets, dragged on relative results in food products, as did JYP Entertainment, the South Korea-based music business, in entertainment. • FP Partner, an insurance and financial services firm headquartered in Japan, was another notable individual detractor from relative performance. Paladin Energy, an Australia-based uranium production company, and Taiwan-based Gold Circuit Electronics, which focuses on printed circuit boards, also lagged.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 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 11.71% 2.75% 4.68% A Class - with sales charge 5.29% 1.54% 4.06% Regulatory Index MSCI ACWI ex USA 13.03% 5.40% 4.62% Performance Index MSCI ACWI ex USA Small Cap Growth 11.62% 5.09% 5.74%
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	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289
Holdings Count | holding	129	129	129	129	129	129	129	129	129
Advisory Fees Paid, Amount	$ 6,573,126
Investment Company, Portfolio Turnover	135%
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 99.6% Japan 20% Exchange-Traded Funds 0.3% Canada 13% Short-Term Investments 1.9% India 10% Other Assets and Liabilities (1.8)% United Kingdom 8% Australia 8%
C000088080 [Member]
Shareholder Report [Line Items]
Fund Name	International Opportunities Fund
Class Name	C Class
Trading Symbol	AIOCX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Opportunities Fund for the period of December 1, 2023 to November 30, 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 $267 2.53%
Expenses Paid, Amount	$ 267
Expense Ratio, Percent	2.53%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Opportunities Fund C Class returned 10.88% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Small Cap Growth Index. • The consumer discretionary and information technology sectors were the leading drivers of relative performance. Sanrio, the Japan-based company behind Hello Kitty, was a notable contributor in specialty retail, along with Asics, the Japan-based shoe and activewear company, and Kalyan Jewellers India, a multinational jewelry business. • Other notable individual contributors included Pro Medicus, an Australia-based health care software company, and Max Healthcare Institute, an India-based health care company. • Relative performance was hurt by the consumer staples and communication services sectors. Japan-based Kotobuki Spirits, a maker of sweets, dragged on relative results in food products, as did JYP Entertainment, the South Korea-based music business, in entertainment. • FP Partner, an insurance and financial services firm headquartered in Japan, was another notable individual detractor from relative performance. Paladin Energy, an Australia-based uranium production company, and Taiwan-based Gold Circuit Electronics, which focuses on printed circuit boards, also lagged.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year C Class 10.88% 1.99% 3.89% Regulatory Index MSCI ACWI ex USA 13.03% 5.40% 4.62% Performance Index MSCI ACWI ex USA Small Cap Growth 11.62% 5.09% 5.74%
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	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289
Holdings Count | holding	129	129	129	129	129	129	129	129	129
Advisory Fees Paid, Amount	$ 6,573,126
Investment Company, Portfolio Turnover	135%
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 99.6% Japan 20% Exchange-Traded Funds 0.3% Canada 13% Short-Term Investments 1.9% India 10% Other Assets and Liabilities (1.8)% United Kingdom 8% Australia 8%
C000088081 [Member]
Shareholder Report [Line Items]
Fund Name	International Opportunities Fund
Class Name	R Class
Trading Symbol	AIORX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Opportunities Fund for the period of December 1, 2023 to November 30, 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 $215 2.03%
Expenses Paid, Amount	$ 215
Expense Ratio, Percent	2.03%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Opportunities Fund R Class returned 11.46% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Small Cap Growth Index. • The consumer discretionary and information technology sectors were the leading drivers of relative performance. Sanrio, the Japan-based company behind Hello Kitty, was a notable contributor in specialty retail, along with Asics, the Japan-based shoe and activewear company, and Kalyan Jewellers India, a multinational jewelry business. • Other notable individual contributors included Pro Medicus, an Australia-based health care software company, and Max Healthcare Institute, an India-based health care company. • Relative performance was hurt by the consumer staples and communication services sectors. Japan-based Kotobuki Spirits, a maker of sweets, dragged on relative results in food products, as did JYP Entertainment, the South Korea-based music business, in entertainment. • FP Partner, an insurance and financial services firm headquartered in Japan, was another notable individual detractor from relative performance. Paladin Energy, an Australia-based uranium production company, and Taiwan-based Gold Circuit Electronics, which focuses on printed circuit boards, also lagged.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R Class 11.46% 2.49% 4.40% Regulatory Index MSCI ACWI ex USA 13.03% 5.40% 4.62% Performance Index MSCI ACWI ex USA Small Cap Growth 11.62% 5.09% 5.74%
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	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289	$ 471,323,289
Holdings Count | holding	129	129	129	129	129	129	129	129	129
Advisory Fees Paid, Amount	$ 6,573,126
Investment Company, Portfolio Turnover	135%
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 99.6% Japan 20% Exchange-Traded Funds 0.3% Canada 13% Short-Term Investments 1.9% India 10% Other Assets and Liabilities (1.8)% United Kingdom 8% Australia 8%
C000152811 [Member]
Shareholder Report [Line Items]
Fund Name	International Small-Mid Cap Fund
Class Name	Investor Class
Trading Symbol	ANTSX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Small-Mid Cap Fund for the period of December 1, 2023 to November 30, 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 $154 1.43%
Expenses Paid, Amount	$ 154
Expense Ratio, Percent	1.43%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Small-Mid Cap Fund Investor Class returned 15.45% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Small Cap Index. • The consumer discretionary sector was a leading contributor to relative performance, benefiting from results in specialty retail. A position in Sanrio, the Japan-based business behind Hello Kitty and other characters, helped. Industrials also contributed to relative performance. • Notable individual contributors included Asics, the Japan-based shoe and activewear company, and Pro Medicus, the Australia-based health care software business. Holding AtkinsRealis Group, a Canada-based engineering services and nuclear energy company, also helped. • The consumer staples sector weighed on relative performance, particularly in the food products industry. Japan-based Yamazaki Baking and Kotobuki Spirits, a Japan-based sweets maker, lagged. The energy sector also detracted from relative results. • Other individual detractors included Paladin Energy, an Australia-based uranium production company, and Amvis Holdings, a Japan-based health care company. Micronics Japan, a company involved in semiconductor testing and measurement, was another detractor.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 19, 2015 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Investor Class 15.45% 4.28% 4.87% 3/19/15 Regulatory Index MSCI EAFE 11.88% 5.89% 5.10% — Performance Index MSCI EAFE Small Cap 11.81% 3.66% 5.46% —
Performance Inception Date									Mar. 19, 2015
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	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736
Holdings Count | holding	123	123	123	123	123	123	123	123	123
Advisory Fees Paid, Amount	$ 1,307,903
Investment Company, Portfolio Turnover	109%
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 98.4% Japan 29% Exchange-Traded Funds 0.6% Australia 14% Short-Term Investments 3.5% United Kingdom 12% Other Assets and Liabilities (2.5)% Canada 11% Sweden 5%
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.
C000152812 [Member]
Shareholder Report [Line Items]
Fund Name	International Small-Mid Cap Fund
Class Name	G Class
Trading Symbol	ANTMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Small-Mid Cap Fund for the period of December 1, 2023 to November 30, 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? International Small-Mid Cap Fund G Class returned 17.12% for the reporting period ended November 30, 2024. The fund seeks capital growth. The commentary below refers to the fund's performance compared to the MSCI EAFE Small Cap Index. • The consumer discretionary sector was a leading contributor to relative performance, benefiting from results in specialty retail. A position in Sanrio, the Japan-based business behind Hello Kitty and other characters, helped. Industrials also contributed to relative performance. • Notable individual contributors included Asics, the Japan-based shoe and activewear company, and Pro Medicus, the Australia-based health care software business. Holding AtkinsRealis Group, a Canada-based engineering services and nuclear energy company, also helped. • The consumer staples sector weighed on relative performance, particularly in the food products industry. Japan-based Yamazaki Baking and Kotobuki Spirits, a Japan-based sweets maker, lagged. The energy sector also detracted from relative results. • Other individual detractors included Paladin Energy, an Australia-based uranium production company, and Amvis Holdings, a Japan-based health care company. Micronics Japan, a company involved in semiconductor testing and measurement, was another detractor.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) March 19, 2015 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date G Class 17.12% 5.78% 6.07% 3/19/15 Regulatory Index MSCI EAFE 11.88% 5.89% 5.10% — Performance Index MSCI EAFE Small Cap 11.81% 3.66% 5.46% —
Performance Inception Date									Mar. 19, 2015
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	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736	$ 548,584,736
Holdings Count | holding	123	123	123	123	123	123	123	123	123
Advisory Fees Paid, Amount	$ 1,307,903
Investment Company, Portfolio Turnover	109%
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 98.4% Japan 29% Exchange-Traded Funds 0.6% Australia 14% Short-Term Investments 3.5% United Kingdom 12% Other Assets and Liabilities (2.5)% Canada 11% Sweden 5%
C000018052 [Member]
Shareholder Report [Line Items]
Fund Name	International Value Fund
Class Name	Investor Class
Trading Symbol	ACEVX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Value Fund for the period of December 1, 2023 to November 30, 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 $117 1.11%
Expenses Paid, Amount	$ 117
Expense Ratio, Percent	1.11%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Value Fund Investor Class returned 11.57% for the reporting period ended November 30, 2024. The fund seeks long-term capital growth. The commentary below refers to the fund's performance relative to the MSCI EAFE Value Index. • Positioning in the financials sector contributed most to performance, led by holdings among insurance and bank stocks. Three of the top five individual contributors were banks, which benefited from global central bank rate cuts, improving bank lending profitability. Insurers enjoyed strong underwriting performance and profitability. • The health care sector was another source of strength, led by stock choices in the pharmaceuticals and health care equipment and supplies industries. The leading contributor in the sector was Belgium-based pharmaceutical company UCB, which reported positive clinical trial results and drug approvals. • Materials stocks were the leading detractors from performance, reflecting positioning among metals and mining, chemicals and construction materials companies. Stock choices and an overweight position in this poor-performing sector hurt relative results. These stocks lagged amid slow economic growth and poor pricing for many industrial metals. • Elsewhere, the communication services and information technology (IT) sectors underperformed. In communication services, positioning in wireless telecommunication services firms detracted most. Stock selection among semiconductors and semiconductor equipment companies was the main source of weakness in IT.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year Investor Class 11.57% 6.75% 3.25% Regulatory Index MSCI EAFE 11.88% 5.89% 5.07% Performance Index MSCI EAFE Value 12.86% 6.23% 4.14%
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	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751
Holdings Count | holding	163	163	163	163	163	163	163	163	163
Advisory Fees Paid, Amount	$ 2,533,691
Investment Company, Portfolio Turnover	68%
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 97.7% United Kingdom 20% Short-Term Investments 2.2% Japan 19% Other Assets and Liabilities 0.1% France 12% Germany 9% Switzerland 7%
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.
C000018053 [Member]
Shareholder Report [Line Items]
Fund Name	International Value Fund
Class Name	I Class
Trading Symbol	ACVUX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Value Fund for the period of December 1, 2023 to November 30, 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 $96 0.91%
Expenses Paid, Amount	$ 96
Expense Ratio, Percent	0.91%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Value Fund I Class returned 11.69% for the reporting period ended November 30, 2024. The fund seeks long-term capital growth. The commentary below refers to the fund's performance relative to the MSCI EAFE Value Index. • Positioning in the financials sector contributed most to performance, led by holdings among insurance and bank stocks. Three of the top five individual contributors were banks, which benefited from global central bank rate cuts, improving bank lending profitability. Insurers enjoyed strong underwriting performance and profitability. • The health care sector was another source of strength, led by stock choices in the pharmaceuticals and health care equipment and supplies industries. The leading contributor in the sector was Belgium-based pharmaceutical company UCB, which reported positive clinical trial results and drug approvals. • Materials stocks were the leading detractors from performance, reflecting positioning among metals and mining, chemicals and construction materials companies. Stock choices and an overweight position in this poor-performing sector hurt relative results. These stocks lagged amid slow economic growth and poor pricing for many industrial metals. • Elsewhere, the communication services and information technology (IT) sectors underperformed. In communication services, positioning in wireless telecommunication services firms detracted most. Stock selection among semiconductors and semiconductor equipment companies was the main source of weakness in IT.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year I Class 11.69% 6.95% 3.44% Regulatory Index MSCI EAFE 11.88% 5.89% 5.07% Performance Index MSCI EAFE Value 12.86% 6.23% 4.14%
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	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751
Holdings Count | holding	163	163	163	163	163	163	163	163	163
Advisory Fees Paid, Amount	$ 2,533,691
Investment Company, Portfolio Turnover	68%
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 97.7% United Kingdom 20% Short-Term Investments 2.2% Japan 19% Other Assets and Liabilities 0.1% France 12% Germany 9% Switzerland 7%
C000018054 [Member]
Shareholder Report [Line Items]
Fund Name	International Value Fund
Class Name	A Class
Trading Symbol	MEQAX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Value Fund for the period of December 1, 2023 to November 30, 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 $144 1.36%
Expenses Paid, Amount	$ 144
Expense Ratio, Percent	1.36%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Value Fund A Class returned 11.21% for the reporting period ended November 30, 2024. The fund seeks long-term capital growth. The commentary below refers to the fund's performance relative to the MSCI EAFE Value Index. • Positioning in the financials sector contributed most to performance, led by holdings among insurance and bank stocks. Three of the top five individual contributors were banks, which benefited from global central bank rate cuts, improving bank lending profitability. Insurers enjoyed strong underwriting performance and profitability. • The health care sector was another source of strength, led by stock choices in the pharmaceuticals and health care equipment and supplies industries. The leading contributor in the sector was Belgium-based pharmaceutical company UCB, which reported positive clinical trial results and drug approvals. • Materials stocks were the leading detractors from performance, reflecting positioning among metals and mining, chemicals and construction materials companies. Stock choices and an overweight position in this poor-performing sector hurt relative results. These stocks lagged amid slow economic growth and poor pricing for many industrial metals. • Elsewhere, the communication services and information technology (IT) sectors underperformed. In communication services, positioning in wireless telecommunication services firms detracted most. Stock selection among semiconductors and semiconductor equipment companies was the main source of weakness in IT.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 , through November 30, 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 11.21% 6.47% 2.99% A Class - with sales charge 4.82% 5.21% 2.38% Regulatory Index MSCI EAFE 11.88% 5.89% 5.07% Performance Index MSCI EAFE Value 12.86% 6.23% 4.14%
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	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751
Holdings Count | holding	163	163	163	163	163	163	163	163	163
Advisory Fees Paid, Amount	$ 2,533,691
Investment Company, Portfolio Turnover	68%
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 97.7% United Kingdom 20% Short-Term Investments 2.2% Japan 19% Other Assets and Liabilities 0.1% France 12% Germany 9% Switzerland 7%
C000018056 [Member]
Shareholder Report [Line Items]
Fund Name	International Value Fund
Class Name	C Class
Trading Symbol	ACCOX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Value Fund for the period of December 1, 2023 to November 30, 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 $222 2.11%
Expenses Paid, Amount	$ 222
Expense Ratio, Percent	2.11%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Value Fund C Class returned 10.32% for the reporting period ended November 30, 2024. The fund seeks long-term capital growth. The commentary below refers to the fund's performance relative to the MSCI EAFE Value Index. • Positioning in the financials sector contributed most to performance, led by holdings among insurance and bank stocks. Three of the top five individual contributors were banks, which benefited from global central bank rate cuts, improving bank lending profitability. Insurers enjoyed strong underwriting performance and profitability. • The health care sector was another source of strength, led by stock choices in the pharmaceuticals and health care equipment and supplies industries. The leading contributor in the sector was Belgium-based pharmaceutical company UCB, which reported positive clinical trial results and drug approvals. • Materials stocks were the leading detractors from performance, reflecting positioning among metals and mining, chemicals and construction materials companies. Stock choices and an overweight position in this poor-performing sector hurt relative results. These stocks lagged amid slow economic growth and poor pricing for many industrial metals. • Elsewhere, the communication services and information technology (IT) sectors underperformed. In communication services, positioning in wireless telecommunication services firms detracted most. Stock selection among semiconductors and semiconductor equipment companies was the main source of weakness in IT.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year C Class 10.32% 5.68% 2.22% Regulatory Index MSCI EAFE 11.88% 5.89% 5.07% Performance Index MSCI EAFE Value 12.86% 6.23% 4.14%
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	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751
Holdings Count | holding	163	163	163	163	163	163	163	163	163
Advisory Fees Paid, Amount	$ 2,533,691
Investment Company, Portfolio Turnover	68%
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 97.7% United Kingdom 20% Short-Term Investments 2.2% Japan 19% Other Assets and Liabilities 0.1% France 12% Germany 9% Switzerland 7%
C000018057 [Member]
Shareholder Report [Line Items]
Fund Name	International Value Fund
Class Name	R Class
Trading Symbol	ACVRX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Value Fund for the period of December 1, 2023 to November 30, 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 $170 1.61%
Expenses Paid, Amount	$ 170
Expense Ratio, Percent	1.61%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Value Fund R Class returned 11.00% for the reporting period ended November 30, 2024. The fund seeks long-term capital growth. The commentary below refers to the fund's performance relative to the MSCI EAFE Value Index. • Positioning in the financials sector contributed most to performance, led by holdings among insurance and bank stocks. Three of the top five individual contributors were banks, which benefited from global central bank rate cuts, improving bank lending profitability. Insurers enjoyed strong underwriting performance and profitability. • The health care sector was another source of strength, led by stock choices in the pharmaceuticals and health care equipment and supplies industries. The leading contributor in the sector was Belgium-based pharmaceutical company UCB, which reported positive clinical trial results and drug approvals. • Materials stocks were the leading detractors from performance, reflecting positioning among metals and mining, chemicals and construction materials companies. Stock choices and an overweight position in this poor-performing sector hurt relative results. These stocks lagged amid slow economic growth and poor pricing for many industrial metals. • Elsewhere, the communication services and information technology (IT) sectors underperformed. In communication services, positioning in wireless telecommunication services firms detracted most. Stock selection among semiconductors and semiconductor equipment companies was the main source of weakness in IT.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R Class 11.00% 6.21% 2.74% Regulatory Index MSCI EAFE 11.88% 5.89% 5.07% Performance Index MSCI EAFE Value 12.86% 6.23% 4.14%
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	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751
Holdings Count | holding	163	163	163	163	163	163	163	163	163
Advisory Fees Paid, Amount	$ 2,533,691
Investment Company, Portfolio Turnover	68%
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 97.7% United Kingdom 20% Short-Term Investments 2.2% Japan 19% Other Assets and Liabilities 0.1% France 12% Germany 9% Switzerland 7%
C000131625 [Member]
Shareholder Report [Line Items]
Fund Name	International Value Fund
Class Name	R6 Class
Trading Symbol	ACVDX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Value Fund for the period of December 1, 2023 to November 30, 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 $81 0.76%
Expenses Paid, Amount	$ 81
Expense Ratio, Percent	0.76%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? International Value Fund R6 Class returned 11.86% for the reporting period ended November 30, 2024. The fund seeks long-term capital growth. The commentary below refers to the fund's performance relative to the MSCI EAFE Value Index. • Positioning in the financials sector contributed most to performance, led by holdings among insurance and bank stocks. Three of the top five individual contributors were banks, which benefited from global central bank rate cuts, improving bank lending profitability. Insurers enjoyed strong underwriting performance and profitability. • The health care sector was another source of strength, led by stock choices in the pharmaceuticals and health care equipment and supplies industries. The leading contributor in the sector was Belgium-based pharmaceutical company UCB, which reported positive clinical trial results and drug approvals. • Materials stocks were the leading detractors from performance, reflecting positioning among metals and mining, chemicals and construction materials companies. Stock choices and an overweight position in this poor-performing sector hurt relative results. These stocks lagged amid slow economic growth and poor pricing for many industrial metals. • Elsewhere, the communication services and information technology (IT) sectors underperformed. In communication services, positioning in wireless telecommunication services firms detracted most. Stock selection among semiconductors and semiconductor equipment companies was the main source of weakness in IT.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) November 30, 2014 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year 10 Year R6 Class 11.86% 7.13% 3.61% Regulatory Index MSCI EAFE 11.88% 5.89% 5.07% Performance Index MSCI EAFE Value 12.86% 6.23% 4.14%
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	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751
Holdings Count | holding	163	163	163	163	163	163	163	163	163
Advisory Fees Paid, Amount	$ 2,533,691
Investment Company, Portfolio Turnover	68%
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 97.7% United Kingdom 20% Short-Term Investments 2.2% Japan 19% Other Assets and Liabilities 0.1% France 12% Germany 9% Switzerland 7%
C000236497 [Member]
Shareholder Report [Line Items]
Fund Name	International Value Fund
Class Name	G Class
Trading Symbol	ACAFX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about International Value Fund for the period of December 1, 2023 to November 30, 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? International Value Fund G Class returned 12.63% for the reporting period ended November 30, 2024. The fund seeks long-term capital growth. The commentary below refers to the fund's performance relative to the MSCI EAFE Value Index. • Positioning in the financials sector contributed most to performance, led by holdings among insurance and bank stocks. Three of the top five individual contributors were banks, which benefited from global central bank rate cuts, improving bank lending profitability. Insurers enjoyed strong underwriting performance and profitability. • The health care sector was another source of strength, led by stock choices in the pharmaceuticals and health care equipment and supplies industries. The leading contributor in the sector was Belgium-based pharmaceutical company UCB, which reported positive clinical trial results and drug approvals. • Materials stocks were the leading detractors from performance, reflecting positioning among metals and mining, chemicals and construction materials companies. Stock choices and an overweight position in this poor-performing sector hurt relative results. These stocks lagged amid slow economic growth and poor pricing for many industrial metals. • Elsewhere, the communication services and information technology (IT) sectors underperformed. In communication services, positioning in wireless telecommunication services firms detracted most. Stock selection among semiconductors and semiconductor equipment companies was the main source of weakness in IT.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) April 1, 2022 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year Since Inception Inception Date G Class 12.63% 7.32% 4/1/22 Regulatory Index MSCI EAFE 11.88% 5.30% — Performance Index MSCI EAFE Value 12.86% 7.35% —
Performance Inception Date		Apr. 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	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751	$ 1,475,316,751
Holdings Count | holding	163	163	163	163	163	163	163	163	163
Advisory Fees Paid, Amount	$ 2,533,691
Investment Company, Portfolio Turnover	68%
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 97.7% United Kingdom 20% Short-Term Investments 2.2% Japan 19% Other Assets and Liabilities 0.1% France 12% Germany 9% Switzerland 7%
C000205778 [Member]
Shareholder Report [Line Items]
Fund Name	Non-U.S. Intrinsic Value Fund
Class Name	Investor Class
Trading Symbol	ANTUX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Non-U.S. Intrinsic Value Fund for the period of December 1, 2023 to November 30, 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 $121 1.17%
Expenses Paid, Amount	$ 121
Expense Ratio, Percent	1.17%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Non-U.S. Intrinsic Value Fund Investor Class returned 7.28% for the reporting period ended November 30, 2024. The fund seeks capital appreciation. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Index. • Global equities broadly advanced during an extended bull market propelled by enthusiasm for artificial intelligence-related stocks. Many central banks cut interest rates, giving investors added confidence. Japan’s cyclical rebound and China’s weak economy made for an uneven landscape for companies trading at significant discounts to their intrinsic value. • Security selection in the information technology sector weighed on performance during the period. The portfolio is broadly underweight in the sector, so a lack of exposure to several names in the semiconductors, software and IT services industries detracted from results. A holding in SUMCO, a silicon wafer producer in Japan, detracted as it faces near-term cyclical headwinds. • Choices of investments in the industrials sector also amounted to a drag on performance. Certain holdings in the professional services and electrical equipment industries underperformed, while not owning certain names in those same industries also weighed on results. • The interaction effect was a positive contributor to performance. In particular, interaction in consumer staples helped results. Allocation in the tobacco industry helped as well. An overweight position in British American Tobacco aided performance as the U.K.-based company likely faces fewer anticipated regulatory burdens in the U.S.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) December 6, 2018 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date Investor Class 7.28% 2.78% 3.42% 12/6/18 MSCI ACWI ex USA 13.03% 5.40% 6.81% —
Performance Inception Date					Dec. 06, 2018
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	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407
Holdings Count | holding	55	55	55	55	55	55	55	55	55
Advisory Fees Paid, Amount	$ 1,237,873
Investment Company, Portfolio Turnover	64%
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 98.5% United Kingdom 27% Short-Term Investments 0.9% France 20% Other Assets and Liabilities 0.6% South Korea 11% Germany 9% Switzerland 7%
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.
C000216231 [Member]
Shareholder Report [Line Items]
Fund Name	Non-U.S. Intrinsic Value Fund
Class Name	I Class
Trading Symbol	ANVHX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Non-U.S. Intrinsic Value Fund for the period of December 1, 2023 to November 30, 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 $101 0.97%
Expenses Paid, Amount	$ 101
Expense Ratio, Percent	0.97%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Non-U.S. Intrinsic Value Fund I Class returned 7.51% for the reporting period ended November 30, 2024. The fund seeks capital appreciation. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Index. • Global equities broadly advanced during an extended bull market propelled by enthusiasm for artificial intelligence-related stocks. Many central banks cut interest rates, giving investors added confidence. Japan’s cyclical rebound and China’s weak economy made for an uneven landscape for companies trading at significant discounts to their intrinsic value. • Security selection in the information technology sector weighed on performance during the period. The portfolio is broadly underweight in the sector, so a lack of exposure to several names in the semiconductors, software and IT services industries detracted from results. A holding in SUMCO, a silicon wafer producer in Japan, detracted as it faces near-term cyclical headwinds. • Choices of investments in the industrials sector also amounted to a drag on performance. Certain holdings in the professional services and electrical equipment industries underperformed, while not owning certain names in those same industries also weighed on results. • The interaction effect was a positive contributor to performance. In particular, interaction in consumer staples helped results. Allocation in the tobacco industry helped as well. An overweight position in British American Tobacco aided performance as the U.K.-based company likely faces fewer anticipated regulatory burdens in the U.S.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) December 3, 2019 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year Since Inception Inception Date I Class 7.51% 3.29% 12/3/19 MSCI ACWI ex USA 13.03% 5.55% —
Performance Inception Date			Dec. 03, 2019
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	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407
Holdings Count | holding	55	55	55	55	55	55	55	55	55
Advisory Fees Paid, Amount	$ 1,237,873
Investment Company, Portfolio Turnover	64%
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 98.5% United Kingdom 27% Short-Term Investments 0.9% France 20% Other Assets and Liabilities 0.6% South Korea 11% Germany 9% Switzerland 7%
C000216232 [Member]
Shareholder Report [Line Items]
Fund Name	Non-U.S. Intrinsic Value Fund
Class Name	A Class
Trading Symbol	ANVLX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Non-U.S. Intrinsic Value Fund for the period of December 1, 2023 to November 30, 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 $147 1.42%
Expenses Paid, Amount	$ 147
Expense Ratio, Percent	1.42%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Non-U.S. Intrinsic Value Fund A Class returned 7.01% for the reporting period ended November 30, 2024. The fund seeks capital appreciation. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Index. • Global equities broadly advanced during an extended bull market propelled by enthusiasm for artificial intelligence-related stocks. Many central banks cut interest rates, giving investors added confidence. Japan’s cyclical rebound and China’s weak economy made for an uneven landscape for companies trading at significant discounts to their intrinsic value. • Security selection in the information technology sector weighed on performance during the period. The portfolio is broadly underweight in the sector, so a lack of exposure to several names in the semiconductors, software and IT services industries detracted from results. A holding in SUMCO, a silicon wafer producer in Japan, detracted as it faces near-term cyclical headwinds. • Choices of investments in the industrials sector also amounted to a drag on performance. Certain holdings in the professional services and electrical equipment industries underperformed, while not owning certain names in those same industries also weighed on results. • The interaction effect was a positive contributor to performance. In particular, interaction in consumer staples helped results. Allocation in the tobacco industry helped as well. An overweight position in British American Tobacco aided performance as the U.K.-based company likely faces fewer anticipated regulatory burdens in the U.S.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) December 3, 2019 through November 30, 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 Since Inception Inception Date A Class 7.01% 2.83% 12/3/19 A Class - with sales charge 0.86% 1.62% 12/3/19 MSCI ACWI ex USA 13.03% 5.55% —
Performance Inception Date			Dec. 03, 2019
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	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407
Holdings Count | holding	55	55	55	55	55	55	55	55	55
Advisory Fees Paid, Amount	$ 1,237,873
Investment Company, Portfolio Turnover	64%
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 98.5% United Kingdom 27% Short-Term Investments 0.9% France 20% Other Assets and Liabilities 0.6% South Korea 11% Germany 9% Switzerland 7%
C000216233 [Member]
Shareholder Report [Line Items]
Fund Name	Non-U.S. Intrinsic Value Fund
Class Name	R Class
Trading Symbol	ANVRX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Non-U.S. Intrinsic Value Fund for the period of December 1, 2023 to November 30, 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 $173 1.67%
Expenses Paid, Amount	$ 173
Expense Ratio, Percent	1.67%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Non-U.S. Intrinsic Value Fund R Class returned 6.85% for the reporting period ended November 30, 2024. The fund seeks capital appreciation. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Index. • Global equities broadly advanced during an extended bull market propelled by enthusiasm for artificial intelligence-related stocks. Many central banks cut interest rates, giving investors added confidence. Japan’s cyclical rebound and China’s weak economy made for an uneven landscape for companies trading at significant discounts to their intrinsic value. • Security selection in the information technology sector weighed on performance during the period. The portfolio is broadly underweight in the sector, so a lack of exposure to several names in the semiconductors, software and IT services industries detracted from results. A holding in SUMCO, a silicon wafer producer in Japan, detracted as it faces near-term cyclical headwinds. • Choices of investments in the industrials sector also amounted to a drag on performance. Certain holdings in the professional services and electrical equipment industries underperformed, while not owning certain names in those same industries also weighed on results. • The interaction effect was a positive contributor to performance. In particular, interaction in consumer staples helped results. Allocation in the tobacco industry helped as well. An overweight position in British American Tobacco aided performance as the U.K.-based company likely faces fewer anticipated regulatory burdens in the U.S.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) December 3, 2019 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year Since Inception Inception Date R Class 6.85% 2.58% 12/3/19 MSCI ACWI ex USA 13.03% 5.55% —
Performance Inception Date			Dec. 03, 2019
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	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407
Holdings Count | holding	55	55	55	55	55	55	55	55	55
Advisory Fees Paid, Amount	$ 1,237,873
Investment Company, Portfolio Turnover	64%
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 98.5% United Kingdom 27% Short-Term Investments 0.9% France 20% Other Assets and Liabilities 0.6% South Korea 11% Germany 9% Switzerland 7%
C000216230 [Member]
Shareholder Report [Line Items]
Fund Name	Non-U.S. Intrinsic Value Fund
Class Name	R6 Class
Trading Symbol	ANVMX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Non-U.S. Intrinsic Value Fund for the period of December 1, 2023 to November 30, 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 $85 0.82%
Expenses Paid, Amount	$ 85
Expense Ratio, Percent	0.82%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Non-U.S. Intrinsic Value Fund R6 Class returned 7.75% for the reporting period ended November 30, 2024. The fund seeks capital appreciation. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Index. • Global equities broadly advanced during an extended bull market propelled by enthusiasm for artificial intelligence-related stocks. Many central banks cut interest rates, giving investors added confidence. Japan’s cyclical rebound and China’s weak economy made for an uneven landscape for companies trading at significant discounts to their intrinsic value. • Security selection in the information technology sector weighed on performance during the period. The portfolio is broadly underweight in the sector, so a lack of exposure to several names in the semiconductors, software and IT services industries detracted from results. A holding in SUMCO, a silicon wafer producer in Japan, detracted as it faces near-term cyclical headwinds. • Choices of investments in the industrials sector also amounted to a drag on performance. Certain holdings in the professional services and electrical equipment industries underperformed, while not owning certain names in those same industries also weighed on results. • The interaction effect was a positive contributor to performance. In particular, interaction in consumer staples helped results. Allocation in the tobacco industry helped as well. An overweight position in British American Tobacco aided performance as the U.K.-based company likely faces fewer anticipated regulatory burdens in the U.S.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) December 3, 2019 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year Since Inception Inception Date R6 Class 7.75% 3.46% 12/3/19 MSCI ACWI ex USA 13.03% 5.55% —
Performance Inception Date			Dec. 03, 2019
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	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407
Holdings Count | holding	55	55	55	55	55	55	55	55	55
Advisory Fees Paid, Amount	$ 1,237,873
Investment Company, Portfolio Turnover	64%
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 98.5% United Kingdom 27% Short-Term Investments 0.9% France 20% Other Assets and Liabilities 0.6% South Korea 11% Germany 9% Switzerland 7%
C000205779 [Member]
Shareholder Report [Line Items]
Fund Name	Non-U.S. Intrinsic Value Fund
Class Name	G Class
Trading Symbol	ANTGX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about Non-U.S. Intrinsic Value Fund for the period of December 1, 2023 to November 30, 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 $2 0.02%
Expenses Paid, Amount	$ 2
Expense Ratio, Percent	0.02%
Factors Affecting Performance [Text Block]	What were the key factors that affected the fund’s performance? Non-U.S. Intrinsic Value Fund G Class returned 8.65% for the reporting period ended November 30, 2024. The fund seeks capital appreciation. The commentary below refers to the fund's performance relative to the MSCI ACWI ex-U.S. Index. • Global equities broadly advanced during an extended bull market propelled by enthusiasm for artificial intelligence-related stocks. Many central banks cut interest rates, giving investors added confidence. Japan’s cyclical rebound and China’s weak economy made for an uneven landscape for companies trading at significant discounts to their intrinsic value. • Security selection in the information technology sector weighed on performance during the period. The portfolio is broadly underweight in the sector, so a lack of exposure to several names in the semiconductors, software and IT services industries detracted from results. A holding in SUMCO, a silicon wafer producer in Japan, detracted as it faces near-term cyclical headwinds. • Choices of investments in the industrials sector also amounted to a drag on performance. Certain holdings in the professional services and electrical equipment industries underperformed, while not owning certain names in those same industries also weighed on results. • The interaction effect was a positive contributor to performance. In particular, interaction in consumer staples helped results. Allocation in the tobacco industry helped as well. An overweight position in British American Tobacco aided performance as the U.K.-based company likely faces fewer anticipated regulatory burdens in the U.S.
Line Graph [Table Text Block]	Cumulative Performance (based on an initial $10,000 investment) December 6, 2018 through November 30, 2024
Average Annual Return [Table Text Block]	Average Annual Total Returns 1 Year 5 Year Since Inception Inception Date G Class 8.65% 4.04% 4.70% 12/6/18 MSCI ACWI ex USA 13.03% 5.40% 6.81% —
Performance Inception Date					Dec. 06, 2018
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	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407	$ 574,244,407
Holdings Count | holding	55	55	55	55	55	55	55	55	55
Advisory Fees Paid, Amount	$ 1,237,873
Investment Company, Portfolio Turnover	64%
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 98.5% United Kingdom 27% Short-Term Investments 0.9% France 20% Other Assets and Liabilities 0.6% South Korea 11% Germany 9% Switzerland 7%

Shareholder Report, Line Graph

Shareholder Report, Line Graph (Details) - USD ($)										8 Months Ended						12 Months Ended
	Apr. 01, 2022	Dec. 03, 2019	Apr. 01, 2019	Dec. 06, 2018	Apr. 10, 2017	Apr. 07, 2016	Mar. 29, 2016	Mar. 19, 2015	Dec. 01, 2014	Nov. 30, 2022	Nov. 30, 2019	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2024	Nov. 30, 2023	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
C000018021 [Member]
Account Value [Line Items]
Accumulated Value									$ 10,000							$ 13,434	$ 11,653	$ 11,678	$ 15,747		$ 15,605		$ 12,709	$ 11,451	$ 13,403	$ 9,542	$ 9,007
C000018023 [Member]
Account Value [Line Items]
Accumulated Value									10,000							13,710	11,860	11,857	15,957		15,784		12,839	11,546	13,481	9,570	9,017
C000189777 [Member]
Account Value [Line Items]
Accumulated Value					$ 10,000							$ 12,605				12,955	11,194	11,169	15,012		14,828		12,047	10,812
C000018022 [Member]
Account Value [Line Items]
Accumulated Value									9,425							12,357	10,740	10,784	14,579		14,491		11,830	10,686	12,542	8,948	8,472
C000018024 [Member]
Account Value [Line Items]
Accumulated Value									10,000							12,181	10,662	10,789	14,691		14,716		12,113	11,015	13,018	9,362	8,933
C000055528 [Member]
Account Value [Line Items]
Accumulated Value									10,000							12,777	11,139	11,217	15,199		15,136		12,395	11,222	13,197	9,444	8,957
C000189779 [Member]
Account Value [Line Items]
Accumulated Value					10,000							12,597				12,802	11,086	11,083	14,911		14,750		12,000	10,792
C000131622 [Member]
Account Value [Line Items]
Accumulated Value									10,000							13,918	12,023	12,008	16,132		15,934		12,941	11,612	13,547	9,609	9,042
C000236495 [Member]
Account Value [Line Items]
Accumulated Value	$ 10,000									$ 8,444						9,965	8,532
C000167122 [Member]
Account Value [Line Items]
Accumulated Value						$ 10,000							$ 10,450			18,185	16,542	14,620	18,252		15,124		13,258	11,906	13,778
C000167123 [Member]
Account Value [Line Items]
Accumulated Value						10,000							10,460			18,503	16,795	14,813	18,469		15,256		13,353	11,974	13,826
C000167124 [Member]
Account Value [Line Items]
Accumulated Value						9,425							9,830			16,764	15,297	13,549	16,964		14,088		12,384	11,146	12,934
C000167119 [Member]
Account Value [Line Items]
Accumulated Value						10,000							10,380			16,673	15,330	13,677	17,258		14,432		12,779	11,597	13,550
C000167120 [Member]
Account Value [Line Items]
Accumulated Value						10,000							10,410			17,405	15,916	14,137	17,752		14,774		13,012	11,757	13,668
C000167121 [Member]
Account Value [Line Items]
Accumulated Value						10,000							10,470			18,736	16,988	14,956	18,617		15,367		13,425	12,021	13,857
C000018025 [Member]
Account Value [Line Items]
Accumulated Value									10,000							25,038	20,517	18,852	22,460		19,671		15,487	12,713	12,553	9,808	10,137
C000018027 [Member]
Account Value [Line Items]
Accumulated Value									10,000							25,553	20,883	19,154	22,784		19,907		15,649	12,822	12,630	9,848	10,160
C000189780 [Member]
Account Value [Line Items]
Accumulated Value					10,000							11,699				23,900	19,506	17,866	21,224		18,517		14,525	11,888
C000018026 [Member]
Account Value [Line Items]
Accumulated Value									9,425							23,023	18,907	17,416	20,814		18,259		14,415	11,866	11,740	9,197	9,532
C000018030 [Member]
Account Value [Line Items]
Accumulated Value									10,000							22,674	18,758	17,413	20,947		18,538		14,732	12,223	12,190	9,616	10,040
C000018031 [Member]
Account Value [Line Items]
Accumulated Value									10,000							23,814	19,603	18,118	21,694		19,079		15,101	12,456	12,363	9,712	10,089
C000189781 [Member]
Account Value [Line Items]
Accumulated Value					10,000							11,681				23,633	19,332	17,731	21,073		18,412		14,473	11,859
C000131623 [Member]
Account Value [Line Items]
Accumulated Value									10,000							25,929	21,170	19,386	23,022		20,095		15,769	12,893	12,693	9,880	10,176
C000167113 [Member]
Account Value [Line Items]
Accumulated Value							$ 10,000							$ 9,750		18,360	16,321	16,216	20,981		19,055		14,530	12,012	12,909
C000167114 [Member]
Account Value [Line Items]
Accumulated Value							10,000							9,760		18,684	16,576	16,426	21,221		19,234		14,639	12,077	12,955
C000167115 [Member]
Account Value [Line Items]
Accumulated Value							9,425							9,171		16,928	15,083	15,022	19,493		17,745		13,569	11,246	12,117
C000167116 [Member]
Account Value [Line Items]
Accumulated Value							10,000							9,680		16,833	15,112	15,165	19,835		18,191		14,010	11,690	12,700
C000167117 [Member]
Account Value [Line Items]
Accumulated Value							10,000							9,720		17,578	15,705	15,673	20,395		18,611		14,264	11,852	12,804
C000167118 [Member]
Account Value [Line Items]
Accumulated Value							10,000							9,770		18,928	16,759	16,595	21,398		19,364		14,713	12,125	12,985
C000212502 [Member]
Account Value [Line Items]
Accumulated Value			$ 10,000								$ 11,213					14,981	13,170	12,935	16,566		14,886
C000167125 [Member]
Account Value [Line Items]
Accumulated Value							10,000							10,850		28,339	22,203	22,698	29,907		23,817		16,978	14,397	14,800
C000167126 [Member]
Account Value [Line Items]
Accumulated Value							10,000							10,860		28,849	22,554	23,005	30,262		24,048		17,102	14,478	14,850
C000167127 [Member]
Account Value [Line Items]
Accumulated Value							9,425							10,207		26,149	20,525	21,042	27,791		22,189		15,855	13,482	13,892
C000167128 [Member]
Account Value [Line Items]
Accumulated Value							10,000							10,780		25,986	20,552	21,222	28,263		22,733		16,369	14,020	14,560
C000167129 [Member]
Account Value [Line Items]
Accumulated Value							10,000							10,810		27,146	21,367	21,960	29,081		23,270		16,679	14,214	14,680
C000167130 [Member]
Account Value [Line Items]
Accumulated Value							10,000							10,880		29,228	22,817	23,235	30,520		24,216		17,205	14,539	14,890
C000018035 [Member]
Account Value [Line Items]
Accumulated Value									10,000							15,708	14,127	13,625	17,246		15,561		12,492	10,693	11,780	8,971	9,814
C000018037 [Member]
Account Value [Line Items]
Accumulated Value									10,000							16,030	14,389	13,849	17,499		15,756		12,623	10,780	11,862	9,011	9,837
C000189783 [Member]
Account Value [Line Items]
Accumulated Value					10,000							11,977				16,358	14,665	14,091	17,777		15,982		12,789	10,905
C000018036 [Member]
Account Value [Line Items]
Accumulated Value									9,425							14,435	13,019	12,581	15,974		14,452		11,629	9,977	11,018	8,419	9,224
C000018040 [Member]
Account Value [Line Items]
Accumulated Value									10,000							14,222	12,913	12,577	16,086		14,662		11,889	10,279	11,436	8,803	9,719
C000018041 [Member]
Account Value [Line Items]
Accumulated Value									10,000							14,942	13,503	13,085	16,658		15,109		12,181	10,486	11,609	8,889	9,769
C000189784 [Member]
Account Value [Line Items]
Accumulated Value					10,000							11,960				16,175	14,520	13,963	17,657		15,899		12,739	10,880
C000131624 [Member]
Account Value [Line Items]
Accumulated Value									10,000							16,257	14,572	14,013	17,682		15,896		12,718	10,845	11,909	9,043	9,850
C000236496 [Member]
Account Value [Line Items]
Accumulated Value	10,000									8,897						10,517	9,346
C000018042 [Member]
Account Value [Line Items]
Accumulated Value									10,000							16,191	14,455	14,709	19,750		17,954		13,969	12,376	14,387	10,226	10,667
C000018043 [Member]
Account Value [Line Items]
Accumulated Value									10,000							16,489	14,686	14,928	19,982		18,146		14,084	12,457	14,453	10,249	10,682
C000088079 [Member]
Account Value [Line Items]
Accumulated Value									9,425							14,887	13,327	13,597	18,296		16,678		13,001	11,546	13,465	9,587	10,035
C000088080 [Member]
Account Value [Line Items]
Accumulated Value									10,000							14,650	13,212	13,571	18,407		16,898		13,278	11,879	13,964	10,013	10,559
C000088081 [Member]
Account Value [Line Items]
Accumulated Value									10,000							15,385	13,803	14,123	19,047		17,409		13,605	12,111	14,159	10,112	10,609
C000152811 [Member]
Account Value [Line Items]
Accumulated Value								$ 10,000							$ 10,270	15,861	13,738	14,346	19,113		16,238		12,863	11,370	13,252	9,949
C000152812 [Member]
Account Value [Line Items]
Accumulated Value								10,000							10,280	17,715	15,125	15,580	20,452		17,122		13,374	11,653	13,386	9,975
C000018052 [Member]
Account Value [Line Items]
Accumulated Value									10,000							13,769	12,341	10,859	11,582		10,596		9,932	9,605	10,945	8,856	9,144
C000018053 [Member]
Account Value [Line Items]
Accumulated Value									10,000							14,027	12,558	11,033	11,743		10,720		10,025	9,683	11,011	8,890	9,163
C000018054 [Member]
Account Value [Line Items]
Accumulated Value									9,425							12,652	11,376	10,036	10,729		9,834		9,249	8,973	10,246	8,300	8,598
C000018056 [Member]
Account Value [Line Items]
Accumulated Value									10,000							12,457	11,291	10,032	10,803		9,985		9,451	9,240	10,625	8,680	9,061
C000018057 [Member]
Account Value [Line Items]
Accumulated Value									10,000							13,099	11,801	10,436	11,190		10,292		9,694	9,420	10,795	8,770	9,105
C000131625 [Member]
Account Value [Line Items]
Accumulated Value									10,000							14,258	12,746	11,173	11,872		10,821		10,106	9,743	11,060	8,915	9,178
C000236497 [Member]
Account Value [Line Items]
Accumulated Value	10,000									9,320						12,074	10,721
C000205778 [Member]
Account Value [Line Items]
Accumulated Value				$ 10,000												12,228	11,398	9,840	10,361		9,406	$ 10,659
C000216231 [Member]
Account Value [Line Items]
Accumulated Value		$ 10,000														11,758	10,936	9,434	9,911	$ 8,971
C000216232 [Member]
Account Value [Line Items]
Accumulated Value		9,425														10,836	10,125	8,769	9,258	8,424
C000216233 [Member]
Account Value [Line Items]
Accumulated Value		10,000														11,356	10,629	9,235	9,766	8,907
C000216230 [Member]
Account Value [Line Items]
Accumulated Value		10,000														11,855	11,002	9,471	9,938	8,988
C000205779 [Member]
Account Value [Line Items]
Accumulated Value				10,000												13,166	12,119	10,349	10,774		9,657	10,800
MSCI Emerging Markets [Member]
Account Value [Line Items]
Accumulated Value									10,000							13,653	12,205	11,712	14,185		13,812		11,663	10,872	11,959	9,004	8,301
MSCI Emerging Markets (Inception Date 4/10/2017) [Member]
Account Value [Line Items]
Accumulated Value					10,000							11,891				13,575	12,136	11,646	14,104		13,734		11,597	10,810
MSCI Emerging Markets (Inception Date 4/1/22) [Member]
Account Value [Line Items]
Accumulated Value	10,000									8,681						10,120	9,047
MSCI Emerging Markets (Inception Date 4/7/2016) [Member]
Account Value [Line Items]
Accumulated Value						10,000							10,846			16,445	14,701	14,107	17,086		16,637		14,048	13,095	14,405
MSCI ACWI [Member]
Account Value [Line Items]
Accumulated Value									10,000							24,292	19,261	17,196	19,457		16,313		14,184	12,477	12,601	10,110	9,751
MSCI ACWI (Inception Date 4/10/2017) [Member]
Account Value [Line Items]
Accumulated Value					10,000							11,444				22,061	17,492	15,616	17,670		14,815		12,881	11,332
MSCI ACWI ex USA (Inception Date 3/29/2016) [Member]
Account Value [Line Items]
Accumulated Value							10,000							10,404		17,646	15,611	14,288	16,213		14,855		13,563	12,197	13,275
MSCI ACWI ex USA (Inception Date 4/1/2019) [Member]
Account Value [Line Items]
Accumulated Value			$ 10,000								$ 10,441					13,584	12,018	10,999	12,481		11,435
MSCI ACWI (Inception Date 3/29/2016) [Member]
Account Value [Line Items]
Accumulated Value							10,000							10,634		25,551	20,259	18,087	20,465		17,158		14,919	13,124	13,254
MSCI EAFE [Member]
Account Value [Line Items]
Accumulated Value									10,000							16,396	14,655	13,042	14,515		13,104		12,319	10,956	11,901	9,351	9,706
MSCI EAFE Growth [Member]
Account Value [Line Items]
Accumulated Value									10,000							17,510	15,781	14,352	17,652		15,784		13,605	11,495	12,344	9,529	10,125
MSCI EAFE (Inception Date 4/10/2017) [Member]
Account Value [Line Items]
Accumulated Value					10,000							11,546				15,908	14,218	12,654	14,082		12,713		11,952	10,630
MSCI EAFE Growth (Inception Date 4/10/2017) [Member]
Account Value [Line Items]
Accumulated Value					$ 10,000							$ 11,694				16,588	14,951	13,597	16,724		14,953		12,889	10,890
MSCI EAFE (Inception Date 4/1/2022) [Member]
Account Value [Line Items]
Accumulated Value	10,000									9,129						11,476	10,257
MSCI EAFE Growth (Inception Date 4/1/2022) [Member]
Account Value [Line Items]
Accumulated Value	10,000									8,907						10,867	9,794
MSCI ACWI ex USA [Member]
Account Value [Line Items]
Accumulated Value									10,000							15,714	13,902	12,724	14,438		13,229		12,078	10,862	11,822	9,265	9,268
MSCI EAFE (Inception Date 3/19/2015) [Member]
Account Value [Line Items]
Accumulated Value								10,000							9,599	16,215	14,493	12,898	14,354		12,959		12,183	10,835	11,769	9,248
MSCI ACWI ex USA (Inception Date 12/6/2018) [Member]
Account Value [Line Items]
Accumulated Value				$ 10,000												14,838	13,127	12,014	13,633		12,491	$ 11,405
MSCI ACWI ex USA (Inception Date 12/3/2019) [Member]
Account Value [Line Items]
Accumulated Value		$ 10,000														13,099	11,589	10,606	12,035	$ 11,027
MSCI Emerging Markets Small Cap (Inception Date 4/7/16) [Member]
Account Value [Line Items]
Accumulated Value						$ 10,000							$ 10,238			18,920	17,114	14,571	16,882		13,752		11,703	11,319	13,193
MSCI ACWI Small Cap (Inception Date 3/29/2016) [Member]
Account Value [Line Items]
Accumulated Value							$ 10,000							$ 10,974		21,601	17,452	16,788	19,271		16,035		14,273	12,985	13,636
MSCI ACWI ex USA Small Cap Growth [Member]
Account Value [Line Items]
Accumulated Value									10,000							17,466	15,648	14,670	19,061		16,499		13,626	12,181	13,642	10,337	10,480
MSCI EAFE Small Cap (Inception Date 3/19/15) [Member]
Account Value [Line Items]
Accumulated Value								$ 10,000							$ 10,399	16,751	14,982	14,053	17,313		15,362		13,997	12,496	13,867	10,405
MSCI EAFE Value [Member]
Account Value [Line Items]
Accumulated Value									$ 10,000							14,997	13,287	$ 11,570	$ 11,711		$ 10,716		$ 11,087	$ 10,408	$ 11,441	$ 9,146	$ 9,286
MSCI EAFE Value (Inception Date 4/1/2022) [Member]
Account Value [Line Items]
Accumulated Value	$ 10,000									$ 9,324						$ 12,085	$ 10,707

Shareholder Report, Average Ann

Shareholder Report, Average Annual Return (Details)	12 Months Ended	32 Months Ended	60 Months Ended		68 Months Ended	72 Months Ended	92 Months Ended	104 Months Ended		116 Months Ended	120 Months Ended
	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024	Nov. 30, 2024
C000018021 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	15.29%			1.12%							3%
C000018023 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	15.60%			1.32%							3.21%
C000189777 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	15.72%			1.46%			3.44%
C000018022 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	8.44%			(0.31%)							2.14%
C000018024 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	14.25%			0.11%							1.99%
C000055528 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	14.71%			0.61%							2.48%
C000189779 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	15.48%			1.30%			3.28%
C000131622 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	15.75%			1.47%							3.36%
C000236495 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	16.79%	(0.13%)
C000167122 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	9.93%			6.52%					7.15%
C000167123 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.17%			6.74%					7.37%
C000167124 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	3.29%			4.99%					6.15%
C000167119 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	8.76%			5.46%					6.08%
C000167120 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	9.35%			5.99%					6.61%
C000167121 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.29%			6.89%					7.52%
C000018025 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	22.03%			10.08%							9.61%
C000018027 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	22.36%			10.30%							9.84%
C000189780 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	22.53%			10.47%			12.07%
C000018026 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	14.77%			8.52%							8.70%
C000018030 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	20.88%			9.01%							8.53%
C000018031 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	21.48%			9.54%							9.06%
C000189781 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	22.25%			10.30%			11.90%
C000131623 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	22.48%			10.46%							10%
C000167113 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.49%			4.79%				7.25%
C000167114 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.72%			5%				7.47%
C000167115 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	5.78%			3.29%				6.25%
C000167116 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.38%			3.74%				6.18%
C000167117 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.92%			4.27%				6.71%
C000167118 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.94%			5.17%				7.63%
C000212502 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	13.75%			5.96%	7.39%
C000167125 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	27.64%			10.79%				12.75%
C000167126 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	27.91%			11.02%				12.98%
C000167127 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	20.07%			9.22%				11.71%
C000167128 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	26.44%			9.68%				11.63%
C000167129 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	27.05%			10.23%				12.19%
C000167130 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	28.10%			11.18%				13.15%
C000018035 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.19%			4.69%							4.62%
C000018037 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.41%			4.90%							4.83%
C000189783 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.54%			5.05%			6.65%
C000018036 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	4.50%			3.19%							3.74%
C000018040 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.13%			3.65%							3.58%
C000018041 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.66%			4.17%							4.10%
C000189784 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.40%			4.89%			6.49%
C000131624 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.56%			5.03%							4.98%
C000236496 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.54%	1.91%
C000018042 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.01%			3%							4.94%
C000018043 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.27%			3.20%							5.13%
C000088079 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	5.29%			1.54%							4.06%
C000088080 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.88%			1.99%							3.89%
C000088081 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.46%			2.49%							4.40%
C000152811 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	15.45%			4.28%						4.87%
C000152812 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	17.12%			5.78%						6.07%
C000018052 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.57%			6.75%							3.25%
C000018053 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.69%			6.95%							3.44%
C000018054 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	4.82%			5.21%							2.38%
C000018056 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.32%			5.68%							2.22%
C000018057 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11%			6.21%							2.74%
C000131625 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.86%			7.13%							3.61%
C000236497 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.63%	7.32%
C000205778 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	7.28%			2.78%		3.42%
C000216231 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	7.51%		3.29%
C000216232 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	0.86%		1.62%
C000216233 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	6.85%		2.58%
C000216230 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	7.75%		3.46%
C000205779 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	8.65%			4.04%		4.70%
Without Sales Load [Member] | C000018022 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	15.06%			0.88%							2.75%
Without Sales Load [Member] | C000167124 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	9.59%			6.24%					6.88%
Without Sales Load [Member] | C000018026 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	21.77%			9.82%							9.34%
Without Sales Load [Member] | C000167115 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.23%			4.52%				6.98%
Without Sales Load [Member] | C000167127 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	27.40%			10.52%				12.48%
Without Sales Load [Member] | C000018036 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.87%			4.42%							4.36%
Without Sales Load [Member] | C000088079 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.71%			2.75%							4.68%
Without Sales Load [Member] | C000018054 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.21%			6.47%							2.99%
Without Sales Load [Member] | C000216232 [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	7.01%		2.83%
MSCI Emerging Markets [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.86%			3.20%			4.08%				3.16%
MSCI Emerging Markets (Inception Date 4/10/2017) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.86%			3.20%			4.08%
MSCI Emerging Markets (Inception Date 4/1/22) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.86%	0.45%
MSCI Emerging Markets (Inception Date 4/7/2016) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.86%			3.20%					5.92%
MSCI ACWI [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	26.12%			11.36%							9.28%
MSCI ACWI (Inception Date 4/10/2017) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	26.12%			11.36%			10.90%
MSCI ACWI ex USA (Inception Date 3/29/2016) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	13.03%			5.40%				6.76%
MSCI ACWI ex USA (Inception Date 4/1/2019) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	13.03%			5.40%	5.55%
MSCI ACWI (Inception Date 3/29/2016) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	26.12%			11.36%				11.41%
MSCI EAFE [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.88%			5.89%							5.07%
MSCI EAFE Growth [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.95%			5.18%							5.76%
MSCI EAFE (Inception Date 4/10/2017) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.88%			5.89%			6.26%
MSCI EAFE Growth (Inception Date 4/10/2017) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.95%			5.18%			6.84%
MSCI EAFE (Inception Date 4/1/2022) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.88%	5.30%
MSCI EAFE Growth (Inception Date 4/1/2022) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.95%	3.16%
MSCI ACWI ex USA [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	13.03%			5.40%							4.62%
MSCI EAFE (Inception Date 3/19/2015) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.88%			5.89%						5.10%
MSCI ACWI ex USA (Inception Date 12/6/2018) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	13.03%			5.40%		6.81%
MSCI ACWI ex USA (Inception Date 12/3/2019) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	13.03%		5.55%
MSCI Emerging Markets Small Cap (Inception Date 4/7/16) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	10.55%			10.08%					7.65%
MSCI ACWI Small Cap (Inception Date 3/29/2016) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	23.78%			8.64%				9.28%
MSCI ACWI ex USA Small Cap Growth [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.62%			5.09%							5.74%
MSCI EAFE Small Cap (Inception Date 3/19/15) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	11.81%			3.66%						5.46%
MSCI EAFE Value [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.86%			6.23%							4.14%
MSCI EAFE Value (Inception Date 4/1/2022) [Member]
Average Annual Return [Line Items]
Average Annual Return, Percent	12.86%	7.35%

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Nov. 30, 2024
C000018021 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000018021 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018021 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018021 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000018021 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018021 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000018021 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000018021 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000018023 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000018023 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018023 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018023 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000018023 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018023 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000018023 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000018023 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000189777 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000189777 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000189777 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000189777 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000189777 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189777 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000189777 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000189777 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000018022 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000018022 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018022 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018022 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000018022 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018022 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000018022 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000018022 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000018024 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000018024 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018024 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018024 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000018024 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018024 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000018024 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000018024 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000055528 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000055528 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000055528 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000055528 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000055528 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000055528 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000055528 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000055528 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000189779 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000189779 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000189779 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000189779 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000189779 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189779 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000189779 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000189779 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000131622 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000131622 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000131622 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000131622 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000131622 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000131622 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000131622 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000131622 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000236495 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000236495 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	19%
C000236495 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000236495 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	8%
C000236495 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	6%
C000236495 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.50%
C000236495 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.20%
C000236495 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(0.70%)
C000167122 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	13%
C000167122 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000167122 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	20%
C000167122 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167122 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	5%
C000167122 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	95.90%
C000167122 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000167122 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000167122 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000167123 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	13%
C000167123 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000167123 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	20%
C000167123 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167123 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	5%
C000167123 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	95.90%
C000167123 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000167123 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000167123 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000167124 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	13%
C000167124 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000167124 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	20%
C000167124 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167124 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	5%
C000167124 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	95.90%
C000167124 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000167124 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000167124 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000167119 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	13%
C000167119 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000167119 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	20%
C000167119 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167119 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	5%
C000167119 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	95.90%
C000167119 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000167119 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000167119 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000167120 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	13%
C000167120 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000167120 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	20%
C000167120 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167120 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	5%
C000167120 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	95.90%
C000167120 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000167120 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000167120 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000167121 [Member] | CHINA
Holdings [Line Items]
Percent of Net Asset Value	13%
C000167121 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	27%
C000167121 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	20%
C000167121 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167121 [Member] | BRAZIL
Holdings [Line Items]
Percent of Net Asset Value	5%
C000167121 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	95.90%
C000167121 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	6.20%
C000167121 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.80%)
C000167121 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.70%
C000018025 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000018025 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018025 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018025 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018025 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018025 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000018025 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000018025 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000018027 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000018027 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018027 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018027 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018027 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018027 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000018027 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000018027 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000189780 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000189780 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189780 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189780 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000189780 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000189780 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000189780 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000189780 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000018026 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000018026 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018026 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018026 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018026 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018026 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000018026 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000018026 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000018030 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000018030 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018030 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018030 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018030 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018030 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000018030 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000018030 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000018031 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000018031 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018031 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018031 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018031 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000018031 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000018031 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000018031 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000189781 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000189781 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189781 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189781 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000189781 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000189781 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000189781 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000189781 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000131623 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	69%
C000131623 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	6%
C000131623 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000131623 [Member] | DENMARK
Holdings [Line Items]
Percent of Net Asset Value	3%
C000131623 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	3%
C000131623 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000131623 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.40%
C000131623 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000167113 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167113 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000167113 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000167113 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167113 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167113 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	96.80%
C000167113 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000167113 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(6.00%)
C000167114 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167114 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000167114 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000167114 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167114 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167114 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	96.80%
C000167114 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000167114 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(6.00%)
C000167115 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167115 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000167115 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000167115 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167115 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167115 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	96.80%
C000167115 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000167115 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(6.00%)
C000167116 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167116 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000167116 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000167116 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167116 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167116 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	96.80%
C000167116 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000167116 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(6.00%)
C000167117 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167117 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000167117 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000167117 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167117 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167117 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	96.80%
C000167117 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000167117 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(6.00%)
C000167118 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167118 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000167118 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000167118 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167118 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167118 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	96.80%
C000167118 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000167118 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(6.00%)
C000212502 [Member] | TAIWAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000212502 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000212502 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000212502 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	6%
C000212502 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Net Asset Value	6%
C000212502 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	96.80%
C000212502 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	9.20%
C000212502 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(6.00%)
C000167125 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	4%
C000167125 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	61%
C000167125 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167125 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167125 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167125 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000167125 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167125 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(3.10%)
C000167125 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000167126 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	4%
C000167126 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	61%
C000167126 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167126 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167126 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167126 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000167126 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167126 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(3.10%)
C000167126 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000167127 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	4%
C000167127 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	61%
C000167127 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167127 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167127 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167127 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000167127 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167127 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(3.10%)
C000167127 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000167128 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	4%
C000167128 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	61%
C000167128 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167128 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167128 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167128 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000167128 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167128 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(3.10%)
C000167128 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000167129 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	4%
C000167129 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	61%
C000167129 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167129 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167129 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167129 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000167129 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167129 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(3.10%)
C000167129 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000167130 [Member] | INDIA
Holdings [Line Items]
Percent of Net Asset Value	4%
C000167130 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Net Asset Value	61%
C000167130 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167130 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	6%
C000167130 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	10%
C000167130 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000167130 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3%
C000167130 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(3.10%)
C000167130 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0%
C000018035 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000018035 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000018035 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018035 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018035 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018035 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000018035 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018035 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000018037 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000018037 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000018037 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018037 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018037 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018037 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000018037 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018037 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000189783 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000189783 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000189783 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000189783 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000189783 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189783 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000189783 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000189783 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000018036 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000018036 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000018036 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018036 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018036 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018036 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000018036 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018036 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000018040 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000018040 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000018040 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018040 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018040 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018040 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000018040 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018040 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000018041 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000018041 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000018041 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018041 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018041 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000018041 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000018041 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000018041 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000189784 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000189784 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000189784 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000189784 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000189784 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000189784 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000189784 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000189784 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000131624 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000131624 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000131624 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000131624 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000131624 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000131624 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000131624 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
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C000131624 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
C000236496 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	18%
C000236496 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	21%
C000236496 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000236496 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	7%
C000236496 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	6%
C000236496 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.80%
C000236496 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	3.20%
C000236496 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.00%)
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Holdings [Line Items]
Percent of Net Asset Value	10%
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Holdings [Line Items]
Percent of Net Asset Value	8%
C000018042 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	20%
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Holdings [Line Items]
Percent of Net Asset Value	13%
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Holdings [Line Items]
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C000018042 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000018042 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	1.90%
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Holdings [Line Items]
Percent of Net Asset Value	(1.80%)
C000018042 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.30%
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Holdings [Line Items]
Percent of Net Asset Value	10%
C000018043 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	8%
C000018043 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	20%
C000018043 [Member] | CANADA
Holdings [Line Items]
Percent of Net Asset Value	13%
C000018043 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Net Asset Value	8%
C000018043 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000018043 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
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Holdings [Line Items]
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C000018043 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
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Holdings [Line Items]
Percent of Net Asset Value	10%
C000088079 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	8%
C000088079 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	20%
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Holdings [Line Items]
Percent of Net Asset Value	13%
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Holdings [Line Items]
Percent of Net Asset Value	8%
C000088079 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	99.60%
C000088079 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
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Holdings [Line Items]
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C000088079 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.30%
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Holdings [Line Items]
Percent of Net Asset Value	10%
C000088080 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	8%
C000088080 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	20%
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Holdings [Line Items]
Percent of Net Asset Value	13%
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Holdings [Line Items]
Percent of Net Asset Value	8%
C000088080 [Member] | Common Stock [Member]
Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
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C000088080 [Member] | Exchange-Traded Fund [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.30%
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Holdings [Line Items]
Percent of Net Asset Value	10%
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Holdings [Line Items]
Percent of Net Asset Value	8%
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Holdings [Line Items]
Percent of Net Asset Value	20%
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Holdings [Line Items]
Percent of Net Asset Value	13%
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Holdings [Line Items]
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Percent of Net Asset Value	99.60%
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Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
Percent of Net Asset Value	0.30%
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Holdings [Line Items]
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C000152811 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	29%
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Holdings [Line Items]
Percent of Net Asset Value	11%
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Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
Percent of Net Asset Value	98.40%
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Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
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C000152812 [Member] | JAPAN
Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
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C000152812 [Member] | Common Stock [Member]
Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
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Holdings [Line Items]
Percent of Net Asset Value	20%
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Holdings [Line Items]
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Holdings [Line Items]
Percent of Net Asset Value	12%
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Holdings [Line Items]
Percent of Net Asset Value	9%
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Holdings [Line Items]
Percent of Net Asset Value	7%
C000018052 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.70%
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Holdings [Line Items]
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Holdings [Line Items]
Percent of Net Asset Value	0.10%
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Holdings [Line Items]
Percent of Net Asset Value	20%
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Holdings [Line Items]
Percent of Net Asset Value	19%
C000018053 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
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Holdings [Line Items]
Percent of Net Asset Value	9%
C000018053 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018053 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.70%
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Holdings [Line Items]
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Holdings [Line Items]
Percent of Net Asset Value	0.10%
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Holdings [Line Items]
Percent of Net Asset Value	20%
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Holdings [Line Items]
Percent of Net Asset Value	19%
C000018054 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018054 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000018054 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018054 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.70%
C000018054 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000018054 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000018056 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	20%
C000018056 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018056 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018056 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000018056 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018056 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.70%
C000018056 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000018056 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000018057 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	20%
C000018057 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000018057 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000018057 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000018057 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000018057 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.70%
C000018057 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000018057 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000131625 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	20%
C000131625 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000131625 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000131625 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000131625 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000131625 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.70%
C000131625 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000131625 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000236497 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	20%
C000236497 [Member] | JAPAN
Holdings [Line Items]
Percent of Net Asset Value	19%
C000236497 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	12%
C000236497 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000236497 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000236497 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	97.70%
C000236497 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000236497 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.10%
C000205778 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	11%
C000205778 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	27%
C000205778 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	20%
C000205778 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000205778 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000205778 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	98.50%
C000205778 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000205778 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000216231 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	11%
C000216231 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	27%
C000216231 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	20%
C000216231 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000216231 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000216231 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	98.50%
C000216231 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000216231 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000216232 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	11%
C000216232 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	27%
C000216232 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	20%
C000216232 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000216232 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000216232 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	98.50%
C000216232 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000216232 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000216233 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	11%
C000216233 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	27%
C000216233 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	20%
C000216233 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000216233 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000216233 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	98.50%
C000216233 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000216233 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000216230 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	11%
C000216230 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	27%
C000216230 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	20%
C000216230 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000216230 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000216230 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	98.50%
C000216230 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000216230 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000205779 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Net Asset Value	11%
C000205779 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Net Asset Value	27%
C000205779 [Member] | FRANCE
Holdings [Line Items]
Percent of Net Asset Value	20%
C000205779 [Member] | GERMANY
Holdings [Line Items]
Percent of Net Asset Value	9%
C000205779 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Net Asset Value	7%
C000205779 [Member] | Common Stock [Member]
Holdings [Line Items]
Percent of Net Asset Value	98.50%
C000205779 [Member] | Short-Term Investment [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.90%
C000205779 [Member] | Other Assets and Liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	0.60%