| Form N-CSR Cover | 12 Months Ended |
| Sep. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Janus Investment Fund |
| Entity Central Index Key | 0000277751 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| Shareholder Report | 12 Months Ended |
| Sep. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Janus Investment Fund |
| Entity Central Index Key | 0000277751 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| C000077650 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class A Shares |
| Trading Symbol | JDBAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 0.88 % |
| Expenses Paid, Amount | $ 99 |
| Expense Ratio, Percent | 0.88% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class A Shares returned 25.96%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class A Shares/JDBAX) at NAV 25.96 % 9.19 % 8.74 % Janus Henderson Balanced Fund (Class A Shares/JDBAX) at Maximum Offering Price - 5.75% 18.70 % 7.90 % 8.09 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000077651 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class C Shares |
| Trading Symbol | JABCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 1.62 % |
| Expenses Paid, Amount | $ 182 |
| Expense Ratio, Percent | 1.62% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class C Shares returned 25.03%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class C Shares/JABCX) at NAV 25.03 % 8.41 % 7.98 % Janus Henderson Balanced Fund (Class C Shares/JABCX) with Contingent Deferred Sales Charge 24.03 % * 8.41 % 7.98 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000083512 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class D Shares |
| Trading Symbol | JANBX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 0.69 % |
| Expenses Paid, Amount | $ 78 |
| Expense Ratio, Percent | 0.69% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class D Shares returned 26.17%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class D Shares/JANBX) 26.17 % 9.39 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000077652 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class I Shares |
| Trading Symbol | JBALX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 0.66 % |
| Expenses Paid, Amount | $ 75 |
| Expense Ratio, Percent | 0.66% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class I Shares returned 26.23%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class I Shares/JBALX) 26.23 % 9.44 % 9.02 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000114869 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class N Shares |
| Trading Symbol | JABNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 0.57 % |
| Expenses Paid, Amount | $ 65 |
| Expense Ratio, Percent | 0.57% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class N Shares returned 26.32%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class N Shares/JABNX) 26.32 % 9.53 % 9.11 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000077653 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class R Shares |
| Trading Symbol | JDBRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 1.31 % |
| Expenses Paid, Amount | $ 148 |
| Expense Ratio, Percent | 1.31% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class R Shares returned 25.43%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class R Shares/JDBRX) 25.43 % 8.72 % 8.30 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000077654 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class S Shares |
| Trading Symbol | JABRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 1.06 % |
| Expenses Paid, Amount | $ 120 |
| Expense Ratio, Percent | 1.06% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class S Shares returned 25.73%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class S Shares/JABRX) 25.73 % 8.99 % 8.57 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000028918 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Balanced Fund |
| Class Name | Class T Shares |
| Trading Symbol | JABAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Balanced Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Balanced Fund $ 0.80 % |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.80% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Balanced Fund Class T Shares returned 26.05%. Its broad-based benchmarks, the S&P 500 ® Top Contributors to Performance The equity allocation performed in line with the S&P 500 ® Top Detractors from Performance Within equities, footwear company Nike detracted relative to the S&P 500 Index as the company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. Consulting firm Accenture also detracted when business slowed due to a shift in IT spending toward AI and away from legacy software projects. In the fixed income allocation, security selection within agency mortgage-backed securities hindered results relative to the Bloomberg U.S. Aggregate Bond Index. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Balanced Fund (Class T Shares/JABAX) 26.05 % 9.27 % 8.84 % S&P 500 ® 36.35 % 15.98 % 13.38 % Bloomberg U.S. Aggregate Bond Index 11.57 % 0.33 % 1.84 % Balanced Index 25.05 % 9.06 % 8.34 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 26,509,000,000 |
| Holdings Count | Holding | 769 |
| Advisory Fees Paid, Amount | $ 135,400,000 |
| Investment Company Portfolio Turnover | 76% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 769 Total investment advisory fee paid $ Portfolio turnover rate 76 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 61.9 Corporate Bonds 12.7 Asset-Backed/Commercial Mortgage-Backed Securities 10.6 Mortgage-Backed Securities 8.8 United States Treasury Notes/Bonds 4.5 Investment Companies 2.9 Bank Loans and Mezzanine Loans 0.6 Other (2.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.8 NVIDIA Corp 4.9 Apple Inc 3.8 Alphabet Inc - Class C 2.7 Amazon.com Inc 2.5 |
| C000077655 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Technology and Innovation Fund |
| Class Name | Class A Shares |
| Trading Symbol | JATAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Technology and Innovation Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Technology and Innovation Fund $ 0.98 % |
| Expenses Paid, Amount | $ 122 |
| Expense Ratio, Percent | 0.98% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Technology and Innovation Fund Class A Shares returned 48.83%. Its broad-based benchmark, the S&P 500 ® SM Top Contributors to Performance Positioning in Apple contributed to returns relative to the additional benchmark; the slower pace of iPhones sales pressured the stock, and our underweight allocation proved beneficial. The Fund’s out-of-benchmark investment in social media company Meta Platforms also contributed. Shares rose on the company’s strong earnings performance and excitement around its artificial intelligence initiatives. Top Detractors from Performance Cloud services provider CCC Intelligence Solutions detracted relative to the additional benchmark as shares declined on concerns over stock sales by a large investor. The Fund also held underweight positions in several mega-cap technology stocks, such as graphic chipmaker NVIDIA, that outperformed the market due to excitement around artificial intelligence. This positioning dampened relative performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Technology and Innovation Fund (Class A Shares/JATAX) at NAV 48.83 % 19.77 % 19.16 % Janus Henderson Global Technology and Innovation Fund (Class A Shares/JATAX) at Maximum Offering Price - 5.75% 40.28 % 18.36 % 18.46 % S&P 500 ® 36.35 % 15.98 % 13.38 % MSCI All Country World Information Technology Index SM 48.35 % 22.78 % 19.12 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,230,000,000 |
| Holdings Count | Holding | 72 |
| Advisory Fees Paid, Amount | $ 40,300,000 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 72 Total investment advisory fee paid $ Portfolio turnover rate 30 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 Asset Allocation (% of net assets) Common Stocks 94.3 Investment Companies 4.9 Private Placements 0.8 Investments Purchased with Cash Collateral from Securities Lending 0.1 Warrants 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 |
| C000077656 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Technology and Innovation Fund |
| Class Name | Class C Shares |
| Trading Symbol | JAGCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Technology and Innovation Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Technology and Innovation Fund $ 1.73 % |
| Expenses Paid, Amount | $ 214 |
| Expense Ratio, Percent | 1.73% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Technology and Innovation Fund Class C Shares returned 47.72%. Its broad-based benchmark, the S&P 500 ® SM Top Contributors to Performance Positioning in Apple contributed to returns relative to the additional benchmark; the slower pace of iPhones sales pressured the stock, and our underweight allocation proved beneficial. The Fund’s out-of-benchmark investment in social media company Meta Platforms also contributed. Shares rose on the company’s strong earnings performance and excitement around its artificial intelligence initiatives. Top Detractors from Performance Cloud services provider CCC Intelligence Solutions detracted relative to the additional benchmark as shares declined on concerns over stock sales by a large investor. The Fund also held underweight positions in several mega-cap technology stocks, such as graphic chipmaker NVIDIA, that outperformed the market due to excitement around artificial intelligence. This positioning dampened relative performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Technology and Innovation Fund (Class C Shares/JAGCX) at NAV 47.72 % 18.96 % 18.35 % Janus Henderson Global Technology and Innovation Fund (Class C Shares/JAGCX) with Contingent Deferred Sales Charge 46.72 % * 18.96 % 18.35 % S&P 500 ® 36.35 % 15.98 % 13.38 % MSCI All Country World Information Technology Index SM 48.35 % 22.78 % 19.12 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,230,000,000 |
| Holdings Count | Holding | 72 |
| Advisory Fees Paid, Amount | $ 40,300,000 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 72 Total investment advisory fee paid $ Portfolio turnover rate 30 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 Asset Allocation (% of net assets) Common Stocks 94.3 Investment Companies 4.9 Private Placements 0.8 Investments Purchased with Cash Collateral from Securities Lending 0.1 Warrants 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 |
| C000083513 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Technology and Innovation Fund |
| Class Name | Class D Shares |
| Trading Symbol | JNGTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Technology and Innovation Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Technology and Innovation Fund $ 0.78 % |
| Expenses Paid, Amount | $ 97 |
| Expense Ratio, Percent | 0.78% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Technology and Innovation Fund Class D Shares returned 49.09%. Its broad-based benchmark, the S&P 500 ® SM Top Contributors to Performance Positioning in Apple contributed to returns relative to the additional benchmark; the slower pace of iPhones sales pressured the stock, and our underweight allocation proved beneficial. The Fund’s out-of-benchmark investment in social media company Meta Platforms also contributed. Shares rose on the company’s strong earnings performance and excitement around its artificial intelligence initiatives. Top Detractors from Performance Cloud services provider CCC Intelligence Solutions detracted relative to the additional benchmark as shares declined on concerns over stock sales by a large investor. The Fund also held underweight positions in several mega-cap technology stocks, such as graphic chipmaker NVIDIA, that outperformed the market due to excitement around artificial intelligence. This positioning dampened relative performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Technology and Innovation Fund (Class D Shares/JNGTX) 49.09 % 20.00 % 19.39 % S&P 500 ® 36.35 % 15.98 % 13.38 % MSCI All Country World Information Technology Index SM 48.35 % 22.78 % 19.12 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 7,230,000,000 |
| Holdings Count | Holding | 72 |
| Advisory Fees Paid, Amount | $ 40,300,000 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 72 Total investment advisory fee paid $ Portfolio turnover rate 30 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 Asset Allocation (% of net assets) Common Stocks 94.3 Investment Companies 4.9 Private Placements 0.8 Investments Purchased with Cash Collateral from Securities Lending 0.1 Warrants 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 |
| C000077657 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Technology and Innovation Fund |
| Class Name | Class I Shares |
| Trading Symbol | JATIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Technology and Innovation Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Technology and Innovation Fund $ 0.75 % |
| Expenses Paid, Amount | $ 93 |
| Expense Ratio, Percent | 0.75% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Technology and Innovation Fund Class I Shares returned 49.15%. Its broad-based benchmark, the S&P 500 ® SM Top Contributors to Performance Positioning in Apple contributed to returns relative to the additional benchmark; the slower pace of iPhones sales pressured the stock, and our underweight allocation proved beneficial. The Fund’s out-of-benchmark investment in social media company Meta Platforms also contributed. Shares rose on the company’s strong earnings performance and excitement around its artificial intelligence initiatives. Top Detractors from Performance Cloud services provider CCC Intelligence Solutions detracted relative to the additional benchmark as shares declined on concerns over stock sales by a large investor. The Fund also held underweight positions in several mega-cap technology stocks, such as graphic chipmaker NVIDIA, that outperformed the market due to excitement around artificial intelligence. This positioning dampened relative performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Technology and Innovation Fund (Class I Shares/JATIX) 49.15 % 20.05 % 19.46 % S&P 500 ® 36.35 % 15.98 % 13.38 % MSCI All Country World Information Technology Index SM 48.35 % 22.78 % 19.12 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,230,000,000 |
| Holdings Count | Holding | 72 |
| Advisory Fees Paid, Amount | $ 40,300,000 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 72 Total investment advisory fee paid $ Portfolio turnover rate 30 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 Asset Allocation (% of net assets) Common Stocks 94.3 Investment Companies 4.9 Private Placements 0.8 Investments Purchased with Cash Collateral from Securities Lending 0.1 Warrants 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 |
| C000177052 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Technology and Innovation Fund |
| Class Name | Class N Shares |
| Trading Symbol | JATNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Technology and Innovation Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Technology and Innovation Fund $ 0.66 % |
| Expenses Paid, Amount | $ 82 |
| Expense Ratio, Percent | 0.66% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Technology and Innovation Fund Class N Shares returned 49.28%. Its broad-based benchmark, the S&P 500 ® SM Top Contributors to Performance Positioning in Apple contributed to returns relative to the additional benchmark; the slower pace of iPhones sales pressured the stock, and our underweight allocation proved beneficial. The Fund’s out-of-benchmark investment in social media company Meta Platforms also contributed. Shares rose on the company’s strong earnings performance and excitement around its artificial intelligence initiatives. Top Detractors from Performance Cloud services provider CCC Intelligence Solutions detracted relative to the additional benchmark as shares declined on concerns over stock sales by a large investor. The Fund also held underweight positions in several mega-cap technology stocks, such as graphic chipmaker NVIDIA, that outperformed the market due to excitement around artificial intelligence. This positioning dampened relative performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Technology and Innovation Fund (Class N Shares/JATNX) 49.28 % 20.15 % 19.50 % S&P 500 ® 36.35 % 15.98 % 13.38 % MSCI All Country World Information Technology Index SM 48.35 % 22.78 % 19.12 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,230,000,000 |
| Holdings Count | Holding | 72 |
| Advisory Fees Paid, Amount | $ 40,300,000 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 72 Total investment advisory fee paid $ Portfolio turnover rate 30 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 Asset Allocation (% of net assets) Common Stocks 94.3 Investment Companies 4.9 Private Placements 0.8 Investments Purchased with Cash Collateral from Securities Lending 0.1 Warrants 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 |
| C000077658 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Technology and Innovation Fund |
| Class Name | Class S Shares |
| Trading Symbol | JATSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Technology and Innovation Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Technology and Innovation Fund $ 1.17 % |
| Expenses Paid, Amount | $ 145 |
| Expense Ratio, Percent | 1.17% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Technology and Innovation Fund Class S Shares returned 48.54%. Its broad-based benchmark, the S&P 500 ® SM Top Contributors to Performance Positioning in Apple contributed to returns relative to the additional benchmark; the slower pace of iPhones sales pressured the stock, and our underweight allocation proved beneficial. The Fund’s out-of-benchmark investment in social media company Meta Platforms also contributed. Shares rose on the company’s strong earnings performance and excitement around its artificial intelligence initiatives. Top Detractors from Performance Cloud services provider CCC Intelligence Solutions detracted relative to the additional benchmark as shares declined on concerns over stock sales by a large investor. The Fund also held underweight positions in several mega-cap technology stocks, such as graphic chipmaker NVIDIA, that outperformed the market due to excitement around artificial intelligence. This positioning dampened relative performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Technology and Innovation Fund (Class S Shares/JATSX) 48.54 % 19.55 % 18.97 % S&P 500 ® 36.35 % 15.98 % 13.38 % MSCI All Country World Information Technology Index SM 48.35 % 22.78 % 19.12 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,230,000,000 |
| Holdings Count | Holding | 72 |
| Advisory Fees Paid, Amount | $ 40,300,000 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 72 Total investment advisory fee paid $ Portfolio turnover rate 30 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 Asset Allocation (% of net assets) Common Stocks 94.3 Investment Companies 4.9 Private Placements 0.8 Investments Purchased with Cash Collateral from Securities Lending 0.1 Warrants 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 |
| C000028919 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Technology and Innovation Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAGTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Technology and Innovation Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Technology and Innovation Fund $ 0.90 % |
| Expenses Paid, Amount | $ 112 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Technology and Innovation Fund Class T Shares returned 48.94%. Its broad-based benchmark, the S&P 500 ® SM Top Contributors to Performance Positioning in Apple contributed to returns relative to the additional benchmark; the slower pace of iPhones sales pressured the stock, and our underweight allocation proved beneficial. The Fund’s out-of-benchmark investment in social media company Meta Platforms also contributed. Shares rose on the company’s strong earnings performance and excitement around its artificial intelligence initiatives. Top Detractors from Performance Cloud services provider CCC Intelligence Solutions detracted relative to the additional benchmark as shares declined on concerns over stock sales by a large investor. The Fund also held underweight positions in several mega-cap technology stocks, such as graphic chipmaker NVIDIA, that outperformed the market due to excitement around artificial intelligence. This positioning dampened relative performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Technology and Innovation Fund (Class T Shares/JAGTX) 48.94 % 19.87 % 19.29 % S&P 500 ® 36.35 % 15.98 % 13.38 % MSCI All Country World Information Technology Index SM 48.35 % 22.78 % 19.12 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,230,000,000 |
| Holdings Count | Holding | 72 |
| Advisory Fees Paid, Amount | $ 40,300,000 |
| Investment Company Portfolio Turnover | 30% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 72 Total investment advisory fee paid $ Portfolio turnover rate 30 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 Asset Allocation (% of net assets) Common Stocks 94.3 Investment Companies 4.9 Private Placements 0.8 Investments Purchased with Cash Collateral from Securities Lending 0.1 Warrants 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 10.0 Taiwan Semiconductor Manufacturing Co Ltd 6.1 Apple Inc 5.5 ASML Holding NV 4.3 |
| C000077659 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class A Shares |
| Trading Symbol | JDNAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 0.99 % |
| Expenses Paid, Amount | $ 112 |
| Expense Ratio, Percent | 0.99% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class A Shares returned 26.90%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class A Shares/JDNAX) at NAV 26.90 % 11.83 % 11.61 % Janus Henderson Growth and Income Fund (Class A Shares/JDNAX) at Maximum Offering Price - 5.75% 19.60 % 10.52 % 10.95 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000077660 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class C Shares |
| Trading Symbol | JGICX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 1.63 % |
| Expenses Paid, Amount | $ 184 |
| Expense Ratio, Percent | 1.63% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class C Shares returned 26.08%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class C Shares/JGICX) at NAV 26.08 % 11.13 % 10.84 % Janus Henderson Growth and Income Fund (Class C Shares/JGICX) with Contingent Deferred Sales Charge 25.08 % * 11.13 % 10.84 % S&P 500 ® 36.35 % 15.98 % 13.38 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000083515 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class D Shares |
| Trading Symbol | JNGIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 0.74 % |
| Expenses Paid, Amount | $ 84 |
| Expense Ratio, Percent | 0.74% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class D Shares returned 27.20%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class D Shares/JNGIX) 27.20 % 12.12 % 11.84 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000077661 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class I Shares |
| Trading Symbol | JGINX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 0.70 % |
| Expenses Paid, Amount | $ 80 |
| Expense Ratio, Percent | 0.70% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class I Shares returned 27.27%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class I Shares/JGINX) 27.27 % 12.17 % 11.91 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000114870 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class N Shares |
| Trading Symbol | JDNNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 0.62 % |
| Expenses Paid, Amount | $ 70 |
| Expense Ratio, Percent | 0.62% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class N Shares returned 27.37%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class N Shares/JDNNX) 27.37 % 12.26 % 11.92 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000077662 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class R Shares |
| Trading Symbol | JDNRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 1.38 % |
| Expenses Paid, Amount | $ 156 |
| Expense Ratio, Percent | 1.38% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class R Shares returned 26.40%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class R Shares/JDNRX) 26.40 % 11.40 % 11.13 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000077663 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class S Shares |
| Trading Symbol | JADGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 1.11 % |
| Expenses Paid, Amount | $ 126 |
| Expense Ratio, Percent | 1.11% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class S Shares returned 26.75%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class S Shares/JADGX) 26.75 % 11.71 % 11.44 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000028923 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Growth and Income Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAGIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Growth and Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Growth and Income Fund $ 0.85 % |
| Expenses Paid, Amount | $ 97 |
| Expense Ratio, Percent | 0.85% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Growth and Income Fund Class T Shares returned 27.08%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance KLA was a top contributor to relative results. The semiconductor equipment company reported strong earnings growth supported by higher memory chip demand, capital spending on artificial intelligence, and demand stabilization in China. Financial services firm American Express, another contributor, reported strong profits growth that reflected higher customer balances and robust spending by affluent cardmembers. Top Detractors from Performance Accenture was a notable detractor from relative performance. The consulting company’s business slowed due to a shift in IT spending toward artificial intelligence and away from legacy software projects. Nike was another detractor, as the footwear and apparel company’s revenue growth faced headwinds in a challenging environment for consumer discretionary spending. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Growth and Income Fund (Class T Shares/JAGIX) 27.08 % 12.00 % 11.73 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Material Change Date | Jan. 26, 2024 |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 7,576,000,000 |
| Holdings Count | Holding | 66 |
| Advisory Fees Paid, Amount | $ 42,200,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 66 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.1 Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.6 Apple Inc 6.3 KLA Corp 3.4 JPMorgan Chase & Co 3.1 American Express Co 3.1 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| Material Fund Change Expenses [Text Block] | Effective January 26, 2024, the Fund's contractual limit on total annual operating expense changed from 0.67% to 0.62%. The cap excludes fees payable pursuant to a Rule 12b-1 plan, shareholder servicing fees, out-of-pocket transfer agency/shareholder servicing costs, including networking/omnibus/shareholder servicing fees payable by any share class, acquired fund fees and expenses, interest, dividends, taxes, brokerage commissions, and extraordinary expenses. |
| C000077669 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class A Shares |
| Trading Symbol | JRAAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 0.86 % |
| Expenses Paid, Amount | $ 106 |
| Expense Ratio, Percent | 0.86% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class A Shares returned 45.50%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class A Shares/JRAAX) at NAV 45.50 % 17.47 % 14.29 % Janus Henderson Research Fund (Class A Shares/JRAAX) at Maximum Offering Price - 5.75% 37.13 % 16.09 % 13.62 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| C000077670 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class C Shares |
| Trading Symbol | JRACX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 1.40 % |
| Expenses Paid, Amount | $ 171 |
| Expense Ratio, Percent | 1.40% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class C Shares returned 44.73%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class C Shares/JRACX) at NAV 44.73 % 16.65 % 13.50 % Janus Henderson Research Fund (Class C Shares/JRACX) with Contingent Deferred Sales Charge 43.73 % * 16.65 % 13.50 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000083517 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class D Shares |
| Trading Symbol | JNRFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 0.67 % |
| Expenses Paid, Amount | $ 82 |
| Expense Ratio, Percent | 0.67% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class D Shares returned 45.78%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class D Shares/JNRFX) 45.78 % 17.70 % 14.52 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| C000077671 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class I Shares |
| Trading Symbol | JRAIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 0.64 % |
| Expenses Paid, Amount | $ 79 |
| Expense Ratio, Percent | 0.64% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class I Shares returned 45.83%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class I Shares/JRAIX) 45.83 % 17.75 % 14.59 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000114872 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class N Shares |
| Trading Symbol | JRANX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 0.55 % |
| Expenses Paid, Amount | $ 68 |
| Expense Ratio, Percent | 0.55% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class N Shares returned 45.95%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class N Shares/JRANX) 45.95 % 17.85 % 14.68 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000177053 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class R Shares |
| Trading Symbol | JRARX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 1.29 % |
| Expenses Paid, Amount | $ 158 |
| Expense Ratio, Percent | 1.29% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class R Shares returned 44.87%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class R Shares/JRARX) 44.87 % 16.94 % 13.91 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| C000077672 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class S Shares |
| Trading Symbol | JRASX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 1.06 % |
| Expenses Paid, Amount | $ 130 |
| Expense Ratio, Percent | 1.06% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class S Shares returned 45.21%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class S Shares/JRASX) 45.21 % 17.25 % 14.10 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| C000028926 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Research Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAMRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Research Fund $ 0.78 % |
| Expenses Paid, Amount | $ 96 |
| Expense Ratio, Percent | 0.78% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Research Fund Class T Shares returned 45.64%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance NVIDIA was a top contributor to returns relative to the performance benchmark. The graphics chip company reported strong earnings growth supported by robust demand for data center graphics processor units used in generative artificial intelligence. Aircraft component manufacturer Howmet Aerospace was another contributor, as it delivered several quarters of strong profits growth that surpassed expectations. Top Detractors from Performance Electric vehicle (EV) manufacturer Rivian Automotive detracted from returns relative to the performance benchmark, as slower EV sales and market share declines hurt its financial performance. We exited the position during the period. Real estate analytics company CoStar Group also detracted, as higher interest rates pressured its commercial real estate business through the first half of the 2024. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Research Fund (Class T Shares/JAMRX) 45.64 % 17.58 % 14.41 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 23,814,000,000 |
| Holdings Count | Holding | 85 |
| Advisory Fees Paid, Amount | $ 111,600,000 |
| Investment Company Portfolio Turnover | 27% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 85 Total investment advisory fee paid $ Portfolio turnover rate 27 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 Asset Allocation (% of net assets) Common Stocks 100.0 Investment Companies 0.1 Investments Purchased with Cash Collateral from Securities Lending 0.0 Private Placements 0.0 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.3 Microsoft Corp 11.4 Apple Inc 6.9 Meta Platforms Inc - Class A 6.3 Amazon.com Inc 5.7 |
| C000077678 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class A Shares |
| Trading Symbol | JORAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 1.02 % |
| Expenses Paid, Amount | $ 119 |
| Expense Ratio, Percent | 1.02% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class A Shares returned 32.99%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class A Shares/JORAX) at NAV 32.99 % 13.37 % 9.81 % Janus Henderson Global Select Fund (Class A Shares/JORAX) at Maximum Offering Price - 5.75% 25.37 % 12.02 % 9.17 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000077679 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class C Shares |
| Trading Symbol | JORCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 1.74 % |
| Expenses Paid, Amount | $ 202 |
| Expense Ratio, Percent | 1.74% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class C Shares returned 31.98%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class C Shares/JORCX) at NAV 31.98 % 12.41 % 8.91 % Janus Henderson Global Select Fund (Class C Shares/JORCX) with Contingent Deferred Sales Charge 30.98 % * 12.41 % 8.91 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000083520 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class D Shares |
| Trading Symbol | JANRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 0.82 % |
| Expenses Paid, Amount | $ 96 |
| Expense Ratio, Percent | 0.82% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class D Shares returned 33.23%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class D Shares/JANRX) 33.23 % 13.60 % 10.03 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000077680 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class I Shares |
| Trading Symbol | JORFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 0.80 % |
| Expenses Paid, Amount | $ 93 |
| Expense Ratio, Percent | 0.80% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class I Shares returned 33.20%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class I Shares/JORFX) 33.20 % 13.63 % 10.11 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000114874 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class N Shares |
| Trading Symbol | JSLNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 0.68 % |
| Expenses Paid, Amount | $ 79 |
| Expense Ratio, Percent | 0.68% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class N Shares returned 33.39%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class N Shares/JSLNX) 33.39 % 13.76 % 10.13 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000077681 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class R Shares |
| Trading Symbol | JORRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 1.56 % |
| Expenses Paid, Amount | $ 181 |
| Expense Ratio, Percent | 1.56% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class R Shares returned 32.22%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class R Shares/JORRX) 32.22 % 12.72 % 9.25 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000077682 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class S Shares |
| Trading Symbol | JORIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 1.29 % |
| Expenses Paid, Amount | $ 150 |
| Expense Ratio, Percent | 1.29% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class S Shares returned 32.56%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class S Shares/JORIX) 32.56 % 13.01 % 9.54 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000028933 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Select Fund |
| Class Name | Class T Shares |
| Trading Symbol | JORNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Select Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Select Fund $ 0.91 % |
| Expenses Paid, Amount | $ 106 |
| Expense Ratio, Percent | 0.91% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Select Fund Class T Shares returned 33.06%. Its broad-based benchmark, the MSCI All Country World Index SM Top Contributors to Performance Vistra Energy contributed to relative results. The U.S. independent power producer delivered strong profits growth and guidance, supported by increased energy usage to power artificial intelligence (AI). Taiwan Semiconductor Manufacturing Company, another contributor, delivered strong revenue growth, fueled in part by its fabrication of advance components used in AI. Top Detractors from Performance Samsonite International detracted on a relative basis. The Hong Kong-listed multinational luggage company reported lower-than-expected revenue growth and reduced guidance that partly reflected weaker travel spending in China. UK-based online sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the US sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Select Fund (Class T Shares/JORNX) 33.06 % 13.49 % 9.95 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 2,923,000,000 |
| Holdings Count | Holding | 57 |
| Advisory Fees Paid, Amount | $ 17,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 57 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 Asset Allocation (% of net assets) Common Stocks 96.9 Investment Companies 2.0 Preferred Stocks 0.8 Private Placements 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.3 Microsoft Corp 5.0 Vistra Corp 4.7 Liberty Media Corp-Liberty Formula One - Series C 3.5 Teck Resources Ltd 3.5 |
| C000077683 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class A Shares |
| Trading Symbol | JCNAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 0.89 % |
| Expenses Paid, Amount | $ 104 |
| Expense Ratio, Percent | 0.89% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class A Shares returned 33.40%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class A Shares/JCNAX) at NAV 33.40 % 13.82 % 9.50 % Janus Henderson Contrarian Fund (Class A Shares/JCNAX) at Maximum Offering Price - 5.75% 25.72 % 12.48 % 8.85 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000077684 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class C Shares |
| Trading Symbol | JCNCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 1.61 % |
| Expenses Paid, Amount | $ 187 |
| Expense Ratio, Percent | 1.61% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class C Shares returned 32.41%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class C Shares/JCNCX) at NAV 32.41 % 13.03 % 8.73 % Janus Henderson Contrarian Fund (Class C Shares/JCNCX) with Contingent Deferred Sales Charge 31.41 % * 13.03 % 8.73 % S&P 500 ® 36.35 % 15.98 % 13.38 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| C000083521 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class D Shares |
| Trading Symbol | JACNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 0.64 % |
| Expenses Paid, Amount | $ 75 |
| Expense Ratio, Percent | 0.64% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class D Shares returned 33.71%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class D Shares/JACNX) 33.71 % 14.09 % 9.74 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000077685 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class I Shares |
| Trading Symbol | JCONX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 0.62 % |
| Expenses Paid, Amount | $ 72 |
| Expense Ratio, Percent | 0.62% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class I Shares returned 33.73%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class I Shares/JCONX) 33.73 % 14.13 % 9.79 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000114875 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class N Shares |
| Trading Symbol | JCNNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 0.51 % |
| Expenses Paid, Amount | $ 60 |
| Expense Ratio, Percent | 0.51% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class N Shares returned 33.91%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class N Shares/JCNNX) 33.91 % 14.25 % 9.82 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000077686 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class R Shares |
| Trading Symbol | JCNRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 1.35 % |
| Expenses Paid, Amount | $ 157 |
| Expense Ratio, Percent | 1.35% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class R Shares returned 32.78%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class R Shares/JCNRX) 32.78 % 13.26 % 8.98 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| C000077687 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class S Shares |
| Trading Symbol | JCNIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 1.09 % |
| Expenses Paid, Amount | $ 127 |
| Expense Ratio, Percent | 1.09% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class S Shares returned 33.10%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class S Shares/JCNIX) 33.10 % 13.56 % 9.28 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| C000028934 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Contrarian Fund |
| Class Name | Class T Shares |
| Trading Symbol | JSVAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Contrarian Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Contrarian Fund $ 0.74 % |
| Expenses Paid, Amount | $ 86 |
| Expense Ratio, Percent | 0.74% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Contrarian Fund Class T Shares returned 33.57%. Its broad-based benchmark, the S&P 500 ® Top Contributors to Performance Howmet Aerospace was a top contributor to relative returns. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. AST SpaceMobile, another contributor, is an early-stage communications services company building a low-orbit satellite network. The stock rose as the company secured contracts and funding from major telecommunications carriers. Top Detractors from Performance An underweight in the information technology sector was a notable drag on relative returns. A position in industrial equipment manufacturer Chart Industries also detracted, as delayed deal closings resulted in disappointing earnings. Oil and gas producer Occidental Petroleum, another detractor, reported weaker-than-expected revenue and profits that pressured the stock performance. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Contrarian Fund (Class T Shares/JSVAX) 33.57 % 13.98 % 9.64 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 4,993,000,000 |
| Holdings Count | Holding | 48 |
| Advisory Fees Paid, Amount | $ 22,200,000 |
| Investment Company Portfolio Turnover | 42% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 48 Total investment advisory fee paid $ Portfolio turnover rate 42 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.1 Corporate Bonds 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (1.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Caesars Entertainment Inc 5.7 Vertiv Holdings Co 5.5 Oracle Corp 5.1 PNC Financial Services Group Inc/The 3.5 Amazon.com Inc 3.5 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal ® |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal ® |
| C000077688 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class A Shares |
| Trading Symbol | JDIAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 1.18 % |
| Expenses Paid, Amount | $ 131 |
| Expense Ratio, Percent | 1.18% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class A Shares returned 21.36%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class A Shares/JDIAX) at NAV 21.36 % 10.94 % 4.76 % Janus Henderson Overseas Fund (Class A Shares/JDIAX) at Maximum Offering Price - 5.75% 14.38 % 9.63 % 4.14 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| C000077689 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class C Shares |
| Trading Symbol | JIGCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 1.83 % |
| Expenses Paid, Amount | $ 202 |
| Expense Ratio, Percent | 1.83% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class C Shares returned 20.58%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class C Shares/JIGCX) at NAV 20.58 % 10.07 % 3.96 % Janus Henderson Overseas Fund (Class C Shares/JIGCX) with Contingent Deferred Sales Charge 19.58 % * 10.07 % 3.96 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Previously, Janus Henderson Investors US LLC contractually agreed to limit the net annual fund operating expenses of Class C Shares of the Fund to the extent they exceeded 1.95%. The cap excluded performance adjustments to management fees, brokerage commissions, interest, dividends, taxes, acquired fund fees and expenses, and extraordinary expenses. This limit was in effect for a period of one year and was discontinued on June 16, 2024. |
| Material Fund Change Expenses [Text Block] | Previously, Janus Henderson Investors US LLC contractually agreed to limit the net annual fund operating expenses of Class C Shares of the Fund to the extent they exceeded 1.95%. The cap excluded performance adjustments to management fees, brokerage commissions, interest, dividends, taxes, acquired fund fees and expenses, and extraordinary expenses. This limit was in effect for a period of one year and was discontinued on June 16, 2024. |
| C000083522 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class D Shares |
| Trading Symbol | JNOSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 0.94 % |
| Expenses Paid, Amount | $ 104 |
| Expense Ratio, Percent | 0.94% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class D Shares returned 21.65%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class D Shares/JNOSX) 21.65 % 11.24 % 5.06 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Previously, Janus Henderson Investors US LLC contractually agreed to limit the net annual fund operating expenses of Class D Shares of the Fund to the extent they exceeded 0.95%. The cap excluded performance adjustments to management fees, brokerage commissions, interest, dividends, taxes, acquired fund fees and expenses, and extraordinary expenses. This limit was in effect for a period of one year and was discontinued on June 16, 2024. |
| Material Fund Change Expenses [Text Block] | Previously, Janus Henderson Investors US LLC contractually agreed to limit the net annual fund operating expenses of Class D Shares of the Fund to the extent they exceeded 0.95%. The cap excluded performance adjustments to management fees, brokerage commissions, interest, dividends, taxes, acquired fund fees and expenses, and extraordinary expenses. This limit was in effect for a period of one year and was discontinued on June 16, 2024. |
| C000077690 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class I Shares |
| Trading Symbol | JIGFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 0.90 % |
| Expenses Paid, Amount | $ 100 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class I Shares returned 21.71%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class I Shares/JIGFX) 21.71 % 11.29 % 5.10 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| C000114876 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class N Shares |
| Trading Symbol | JDINX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 0.80 % |
| Expenses Paid, Amount | $ 89 |
| Expense Ratio, Percent | 0.80% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class N Shares returned 21.83%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class N Shares/JDINX) 21.83 % 11.40 % 5.21 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| C000077691 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class R Shares |
| Trading Symbol | JDIRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 1.55 % |
| Expenses Paid, Amount | $ 171 |
| Expense Ratio, Percent | 1.55% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class R Shares returned 20.93%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class R Shares/JDIRX) 20.93 % 10.57 % 4.44 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. Previously, Janus Henderson Investors US LLC contractually agreed to limit the net annual fund operating expenses of Class R Shares of the Fund to the extent they exceeded 1.54%. The cap excluded performance adjustments to management fees, brokerage commissions, interest, dividends, taxes, acquired fund fees and expenses, and extraordinary expenses. This limit was in effect for a period of one year and was discontinued on June 16, 2024. |
| Material Fund Change Expenses [Text Block] | Previously, Janus Henderson Investors US LLC contractually agreed to limit the net annual fund operating expenses of Class R Shares of the Fund to the extent they exceeded 1.54%. The cap excluded performance adjustments to management fees, brokerage commissions, interest, dividends, taxes, acquired fund fees and expenses, and extraordinary expenses. This limit was in effect for a period of one year and was discontinued on June 16, 2024. |
| C000077692 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class S Shares |
| Trading Symbol | JIGRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 1.29 % |
| Expenses Paid, Amount | $ 143 |
| Expense Ratio, Percent | 1.29% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class S Shares returned 21.23%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class S Shares/JIGRX) 21.23 % 10.85 % 4.70 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| C000028935 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Overseas Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAOSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Overseas Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Overseas Fund $ 1.03 % |
| Expenses Paid, Amount | $ 114 |
| Expense Ratio, Percent | 1.03% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Overseas Fund Class T Shares returned 21.54%. Its broad-based benchmark, the MSCI All Country World ex-USA Index SM Top Contributors to Performance Taiwan Semiconductor Manufacturing Company (TSMC) contributed to relative performance. TSMC delivered strong revenue growth, fueled in part by its fabrication of graphics processing units integral to the deployment of generative artificial intelligence. Italy-based international banking group UniCredit, another contributor, was rewarded by investors for its disciplined, shareholder-friendly capital allocation. Top Detractors from Performance Samsonite International detracted from relative results. The multinational luggage company reported lower-than-expected revenue growth and reduced guidance, due in part to macroeconomic weakness in China. UK-based online and sports betting company Entain, another detractor, faced regulatory uncertainty and competitive challenges in the U.S. sports betting market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Overseas Fund (Class T Shares/JAOSX) 21.54 % 11.14 % 4.97 % MSCI All Country World ex-USA Index SM 25.35 % 7.59 % 5.22 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,543,000,000 |
| Holdings Count | Holding | 46 |
| Advisory Fees Paid, Amount | $ 23,800,000 |
| Investment Company Portfolio Turnover | 45% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 46 Total investment advisory fee paid $ Portfolio turnover rate 45 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 Asset Allocation (% of net assets) Common Stocks 95.7 Investment Companies 2.3 Preferred Stocks 1.8 Investments Purchased with Cash Collateral from Securities Lending 0.4 Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 6.9 Teck Resources Ltd 4.1 BAE Systems PLC 4.0 Liberty Media Corp-Liberty Formula One - Series C 3.6 BNP Paribas SA 3.6 |
| C000077722 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class A Shares |
| Trading Symbol | JGMAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 1.10 % |
| Expenses Paid, Amount | $ 123 |
| Expense Ratio, Percent | 1.10% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class A Shares returned 23.06%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class A Shares/JGMAX) at NAV 23.06 % 6.95 % 9.54 % Janus Henderson Triton Fund (Class A Shares/JGMAX) at Maximum Offering Price - 5.75% 15.99 % 5.69 % 8.89 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000077723 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class C Shares |
| Trading Symbol | JGMCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 1.68 % |
| Expenses Paid, Amount | $ 187 |
| Expense Ratio, Percent | 1.68% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class C Shares returned 22.39%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class C Shares/JGMCX) at NAV 22.39 % 6.39 % 8.92 % Janus Henderson Triton Fund (Class C Shares/JGMCX) with Contingent Deferred Sales Charge 21.39 % * 6.39 % 8.92 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000083530 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class D Shares |
| Trading Symbol | JANIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 0.79 % |
| Expenses Paid, Amount | $ 88 |
| Expense Ratio, Percent | 0.79% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class D Shares returned 23.44%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class D Shares/JANIX) 23.44 % 7.30 % 9.89 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000077724 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class I Shares |
| Trading Symbol | JSMGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 0.77 % |
| Expenses Paid, Amount | $ 86 |
| Expense Ratio, Percent | 0.77% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class I Shares returned 23.48%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class I Shares/JSMGX) 23.48 % 7.33 % 9.93 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000114880 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class N Shares |
| Trading Symbol | JGMNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 0.66 % |
| Expenses Paid, Amount | $ 74 |
| Expense Ratio, Percent | 0.66% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class N Shares returned 23.59%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class N Shares/JGMNX) 23.59 % 7.44 % 10.04 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000077725 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class R Shares |
| Trading Symbol | JGMRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 1.41 % |
| Expenses Paid, Amount | $ 157 |
| Expense Ratio, Percent | 1.41% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class R Shares returned 22.68%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class R Shares/JGMRX) 22.68 % 6.64 % 9.22 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000077726 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class S Shares |
| Trading Symbol | JGMIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 1.16 % |
| Expenses Paid, Amount | $ 129 |
| Expense Ratio, Percent | 1.16% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class S Shares returned 22.97%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class S Shares/JGMIX) 22.97 % 6.90 % 9.49 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000028947 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Triton Fund |
| Class Name | Class T Shares |
| Trading Symbol | JATTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Triton Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Triton Fund $ 0.90 % |
| Expenses Paid, Amount | $ 101 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Triton Fund Class T Shares returned 23.34%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance AST SpaceMobile was a top contributor relative to the performance benchmark. This early-stage communications services company secured major contracts and funding to support its development of a low-orbit satellite network. Healthcare company Vaxcyte, another contributor, reported positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Triton Fund (Class T Shares/JATTX) 23.34 % 7.18 % 9.78 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2500™ Growth Index 25.20 % 9.75 % 9.98 % Russell 2000 ® 27.66 % 8.82 % 8.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 6,661,000,000 |
| Holdings Count | Holding | 130 |
| Advisory Fees Paid, Amount | $ 41,600,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 130 Total investment advisory fee paid $ Portfolio turnover rate 19 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 Asset Allocation (% of net assets) Common Stocks 99.2 Investments Purchased with Cash Collateral from Securities Lending 0.9 Investment Companies 0.7 Private Placements 0.4 Warrants 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) SS&C Technologies Holdings Inc 2.7 Blackbaud Inc 2.4 Teledyne Technologies Inc 1.9 Crown Holdings Inc 1.9 Cboe Global Markets Inc 1.8 |
| C000100475 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Venture Fund |
| Class Name | Class A Shares |
| Trading Symbol | JVTAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Venture Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Venture Fund $ 1.01 % |
| Expenses Paid, Amount | $ 115 |
| Expense Ratio, Percent | 1.01% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Venture Fund Class A Shares returned 27.42%. Its broad-based benchmark, the Russell 3000 ® ® ® Top Contributors to Performance Stride was a top contributor to returns relative to the performance benchmark. The education services company reported positive earnings, supported by strong student enrollment and retention metrics for its K-12 remote learning platform. AST SpaceMobile, another contributor, is an early-stage communications services company that has secured major contracts and funding to support its development of a low-orbit satellite network. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Venture Fund (Class A Shares/JVTAX) at NAV 27.42 % 8.75 % 9.70 % Janus Henderson Venture Fund (Class A Shares/JVTAX) at Maximum Offering Price - 5.75% 20.08 % 7.47 % 9.06 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2000 ® 27.66 % 8.82 % 8.95 % Russell 2000 ® 26.76 % 9.39 % 8.78 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,242,000,000 |
| Holdings Count | Holding | 140 |
| Advisory Fees Paid, Amount | $ 19,200,000 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 140 Total investment advisory fee paid $ Portfolio turnover rate 18 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 Asset Allocation (% of net assets) Common Stocks 98.6 Investment Companies 1.0 Investments Purchased with Cash Collateral from Securities Lending 0.8 Private Placements 0.6 Warrants 0.0 Other (1.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 |
| C000100476 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Venture Fund |
| Class Name | Class C Shares |
| Trading Symbol | JVTCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Venture Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Venture Fund $ 1.65 % |
| Expenses Paid, Amount | $ 187 |
| Expense Ratio, Percent | 1.65% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Venture Fund Class C Shares returned 26.68%. Its broad-based benchmark, the Russell 3000 ® ® ® Top Contributors to Performance Stride was a top contributor to returns relative to the performance benchmark. The education services company reported positive earnings, supported by strong student enrollment and retention metrics for its K-12 remote learning platform. AST SpaceMobile, another contributor, is an early-stage communications services company that has secured major contracts and funding to support its development of a low-orbit satellite network. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Venture Fund (Class C Shares/JVTCX) at NAV 26.68 % 7.94 % 8.90 % Janus Henderson Venture Fund (Class C Shares/JVTCX) with Contingent Deferred Sales Charge 25.68 % * 7.94 % 8.90 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2000 ® 27.66 % 8.82 % 8.95 % Russell 2000 ® 26.76 % 9.39 % 8.78 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,242,000,000 |
| Holdings Count | Holding | 140 |
| Advisory Fees Paid, Amount | $ 19,200,000 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 140 Total investment advisory fee paid $ Portfolio turnover rate 18 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 Asset Allocation (% of net assets) Common Stocks 98.6 Investment Companies 1.0 Investments Purchased with Cash Collateral from Securities Lending 0.8 Private Placements 0.6 Warrants 0.0 Other (1.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 |
| C000083533 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Venture Fund |
| Class Name | Class D Shares |
| Trading Symbol | JANVX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Venture Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Venture Fund $ 0.79 % |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.79% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Venture Fund Class D Shares returned 27.69%. Its broad-based benchmark, the Russell 3000 ® ® ® Top Contributors to Performance Stride was a top contributor to returns relative to the performance benchmark. The education services company reported positive earnings, supported by strong student enrollment and retention metrics for its K-12 remote learning platform. AST SpaceMobile, another contributor, is an early-stage communications services company that has secured major contracts and funding to support its development of a low-orbit satellite network. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Venture Fund (Class D Shares/JANVX) 27.69 % 8.99 % 9.94 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2000 ® 27.66 % 8.82 % 8.95 % Russell 2000 ® 26.76 % 9.39 % 8.78 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 3,242,000,000 |
| Holdings Count | Holding | 140 |
| Advisory Fees Paid, Amount | $ 19,200,000 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 140 Total investment advisory fee paid $ Portfolio turnover rate 18 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 Asset Allocation (% of net assets) Common Stocks 98.6 Investment Companies 1.0 Investments Purchased with Cash Collateral from Securities Lending 0.8 Private Placements 0.6 Warrants 0.0 Other (1.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 |
| C000100477 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Venture Fund |
| Class Name | Class I Shares |
| Trading Symbol | JVTIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Venture Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Venture Fund $ 0.76 % |
| Expenses Paid, Amount | $ 87 |
| Expense Ratio, Percent | 0.76% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Venture Fund Class I Shares returned 27.73%. Its broad-based benchmark, the Russell 3000 ® ® ® Top Contributors to Performance Stride was a top contributor to returns relative to the performance benchmark. The education services company reported positive earnings, supported by strong student enrollment and retention metrics for its K-12 remote learning platform. AST SpaceMobile, another contributor, is an early-stage communications services company that has secured major contracts and funding to support its development of a low-orbit satellite network. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Venture Fund (Class I Shares/JVTIX) 27.73 % 9.03 % 9.99 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2000 ® 27.66 % 8.82 % 8.95 % Russell 2000 ® 26.76 % 9.39 % 8.78 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,242,000,000 |
| Holdings Count | Holding | 140 |
| Advisory Fees Paid, Amount | $ 19,200,000 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 140 Total investment advisory fee paid $ Portfolio turnover rate 18 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 Asset Allocation (% of net assets) Common Stocks 98.6 Investment Companies 1.0 Investments Purchased with Cash Collateral from Securities Lending 0.8 Private Placements 0.6 Warrants 0.0 Other (1.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 |
| C000114881 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Venture Fund |
| Class Name | Class N Shares |
| Trading Symbol | JVTNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Venture Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Venture Fund $ 0.67 % |
| Expenses Paid, Amount | $ 76 |
| Expense Ratio, Percent | 0.67% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Venture Fund Class N Shares returned 27.85%. Its broad-based benchmark, the Russell 3000 ® ® ® Top Contributors to Performance Stride was a top contributor to returns relative to the performance benchmark. The education services company reported positive earnings, supported by strong student enrollment and retention metrics for its K-12 remote learning platform. AST SpaceMobile, another contributor, is an early-stage communications services company that has secured major contracts and funding to support its development of a low-orbit satellite network. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Venture Fund (Class N Shares/JVTNX) 27.85 % 9.13 % 10.09 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2000 ® 27.66 % 8.82 % 8.95 % Russell 2000 ® 26.76 % 9.39 % 8.78 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,242,000,000 |
| Holdings Count | Holding | 140 |
| Advisory Fees Paid, Amount | $ 19,200,000 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 140 Total investment advisory fee paid $ Portfolio turnover rate 18 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 Asset Allocation (% of net assets) Common Stocks 98.6 Investment Companies 1.0 Investments Purchased with Cash Collateral from Securities Lending 0.8 Private Placements 0.6 Warrants 0.0 Other (1.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 |
| C000100478 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Venture Fund |
| Class Name | Class S Shares |
| Trading Symbol | JVTSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Venture Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Venture Fund $ 1.17 % |
| Expenses Paid, Amount | $ 133 |
| Expense Ratio, Percent | 1.17% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Venture Fund Class S Shares returned 27.21%. Its broad-based benchmark, the Russell 3000 ® ® ® Top Contributors to Performance Stride was a top contributor to returns relative to the performance benchmark. The education services company reported positive earnings, supported by strong student enrollment and retention metrics for its K-12 remote learning platform. AST SpaceMobile, another contributor, is an early-stage communications services company that has secured major contracts and funding to support its development of a low-orbit satellite network. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Venture Fund (Class S Shares/JVTSX) 27.21 % 8.58 % 9.54 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2000 ® 27.66 % 8.82 % 8.95 % Russell 2000 ® 26.76 % 9.39 % 8.78 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,242,000,000 |
| Holdings Count | Holding | 140 |
| Advisory Fees Paid, Amount | $ 19,200,000 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 140 Total investment advisory fee paid $ Portfolio turnover rate 18 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 Asset Allocation (% of net assets) Common Stocks 98.6 Investment Companies 1.0 Investments Purchased with Cash Collateral from Securities Lending 0.8 Private Placements 0.6 Warrants 0.0 Other (1.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 |
| C000028950 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Venture Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAVTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Venture Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Venture Fund $ 0.90 % |
| Expenses Paid, Amount | $ 102 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Venture Fund Class T Shares returned 27.56%. Its broad-based benchmark, the Russell 3000 ® ® ® Top Contributors to Performance Stride was a top contributor to returns relative to the performance benchmark. The education services company reported positive earnings, supported by strong student enrollment and retention metrics for its K-12 remote learning platform. AST SpaceMobile, another contributor, is an early-stage communications services company that has secured major contracts and funding to support its development of a low-orbit satellite network. Top Detractors from Performance Rentokil Initial was a notable detractor from returns relative to the performance benchmark. The consumer services company faced revenue and earnings headwinds because of the slower-than-expected integration of its U.S. Terminix pest control business. ON Semiconductor, another detractor, reported weaker business trends due to slowing in the electric vehicle market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Venture Fund (Class T Shares/JAVTX) 27.56 % 8.87 % 9.83 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell 2000 ® 27.66 % 8.82 % 8.95 % Russell 2000 ® 26.76 % 9.39 % 8.78 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,242,000,000 |
| Holdings Count | Holding | 140 |
| Advisory Fees Paid, Amount | $ 19,200,000 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 140 Total investment advisory fee paid $ Portfolio turnover rate 18 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 Asset Allocation (% of net assets) Common Stocks 98.6 Investment Companies 1.0 Investments Purchased with Cash Collateral from Securities Lending 0.8 Private Placements 0.6 Warrants 0.0 Other (1.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Stride Inc 2.4 SS&C Technologies Holdings Inc 2.1 Vaxcyte Inc 2.1 Descartes Systems Group Inc/The 1.9 Blackbaud Inc 1.7 |
| C000077732 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class A Shares |
| Trading Symbol | JDWAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 0.97 % |
| Expenses Paid, Amount | $ 115 |
| Expense Ratio, Percent | 0.97% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class A Shares returned 36.90%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class A Shares/JDWAX) at NAV 36.90 % 13.79 % 10.40 % Janus Henderson Global Research Fund (Class A Shares/JDWAX) at Maximum Offering Price - 5.75% 29.02 % 12.45 % 9.75 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| C000077733 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class C Shares |
| Trading Symbol | JWWCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 1.76 % |
| Expenses Paid, Amount | $ 207 |
| Expense Ratio, Percent | 1.76% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class C Shares returned 35.79%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class C Shares/JWWCX) at NAV 35.79 % 12.99 % 9.64 % Janus Henderson Global Research Fund (Class C Shares/JWWCX) with Contingent Deferred Sales Charge 34.79 % * 12.99 % 9.64 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| C000083534 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class D Shares |
| Trading Symbol | JANWX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 0.75 % |
| Expenses Paid, Amount | $ 89 |
| Expense Ratio, Percent | 0.75% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class D Shares returned 37.18%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class D Shares/JANWX) 37.18 % 14.10 % 10.70 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| C000077734 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class I Shares |
| Trading Symbol | JWWFX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 0.70 % |
| Expenses Paid, Amount | $ 83 |
| Expense Ratio, Percent | 0.70% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class I Shares returned 37.25%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class I Shares/JWWFX) 37.25 % 14.18 % 10.79 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal SM |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal SM |
| C000114882 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class N Shares |
| Trading Symbol | JDWNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 0.62 % |
| Expenses Paid, Amount | $ 74 |
| Expense Ratio, Percent | 0.62% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class N Shares returned 37.36%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class N Shares/JDWNX) 37.36 % 14.25 % 10.78 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal SM |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal SM |
| C000077735 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class R Shares |
| Trading Symbol | JDWRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 1.40 % |
| Expenses Paid, Amount | $ 165 |
| Expense Ratio, Percent | 1.40% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class R Shares returned 36.28%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class R Shares/JDWRX) 36.28 % 13.37 % 10.01 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| C000077736 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class S Shares |
| Trading Symbol | JWGRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 1.13 % |
| Expenses Paid, Amount | $ 134 |
| Expense Ratio, Percent | 1.13% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class S Shares returned 36.65%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class S Shares/JWGRX) 36.65 % 13.68 % 10.31 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| C000028951 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Research Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAWWX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Research Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Research Fund $ 0.86 % |
| Expenses Paid, Amount | $ 102 |
| Expense Ratio, Percent | 0.86% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Research Fund Class T Shares returned 37.04%. Its broad-based benchmark, the MSCI World Index SM SM Top Contributors to Performance Vistra Energy contributed relative to the broad-based benchmark. The U.S. independent power producer delivered strong profits growth and guidance supported by increased energy usage to power artificial intelligence (AI). NVIDIA, another contributor, reported robust earnings supported by strong demand for its data center graphics processor units used in generative AI. Top Detractors from Performance Weaker consumer spending trends in China pressured revenue growth and share price performance for Germany-based multinational automaker Porsche and France-based global spirits company Pernod Ricard. Both stocks were notable detractors from returns compared to the broad-based benchmark. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Research Fund (Class T Shares/JAWWX) 37.04 % 13.99 % 10.60 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI All Country World Index SM 31.76 % 12.19 % 9.39 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 3,870,000,000 |
| Holdings Count | Holding | 115 |
| Advisory Fees Paid, Amount | $ 20,400,000 |
| Investment Company Portfolio Turnover | 28% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 115 Total investment advisory fee paid $ Portfolio turnover rate 28 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 Asset Allocation (% of net assets) Common Stocks 98.2 Preferred Stocks 1.0 Investment Companies 0.6 Investments Purchased with Cash Collateral from Securities Lending 0.5 Private Placements 0.0 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 5.4 Microsoft Corp 5.4 Alphabet Inc - Class C 3.8 Apple Inc 3.3 Amazon.com Inc 2.9 |
| C000077737 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class A Shares |
| Trading Symbol | JDMAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 1.11 % |
| Expenses Paid, Amount | $ 125 |
| Expense Ratio, Percent | 1.11% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class A Shares returned 25.74%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class A Shares/JDMAX) at NAV 25.74 % 10.95 % 12.69 % Janus Henderson Enterprise Fund (Class A Shares/JDMAX) at Maximum Offering Price - 5.75% 18.51 % 9.65 % 12.03 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000077738 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class C Shares |
| Trading Symbol | JGRCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 1.62 % |
| Expenses Paid, Amount | $ 182 |
| Expense Ratio, Percent | 1.62% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class C Shares returned 25.12%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class C Shares/JGRCX) at NAV 25.12 % 10.37 % 12.05 % Janus Henderson Enterprise Fund (Class C Shares/JGRCX) with Contingent Deferred Sales Charge 24.12 % * 10.37 % 12.05 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000083535 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class D Shares |
| Trading Symbol | JANEX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 0.79 % |
| Expenses Paid, Amount | $ 89 |
| Expense Ratio, Percent | 0.79% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class D Shares returned 26.15%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil Initial, another relative detractor, faced business headwinds for its U.S. pest control business. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class D Shares/JANEX) 26.15 % 11.31 % 13.04 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000077739 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class I Shares |
| Trading Symbol | JMGRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 0.76 % |
| Expenses Paid, Amount | $ 86 |
| Expense Ratio, Percent | 0.76% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class I Shares returned 26.18%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil Initial, another relative detractor, faced business headwinds for its U.S. pest control business. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class I Shares/JMGRX) 26.18 % 11.35 % 13.10 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000114883 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class N Shares |
| Trading Symbol | JDMNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 0.66 % |
| Expenses Paid, Amount | $ 75 |
| Expense Ratio, Percent | 0.66% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class N Shares returned 26.32%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil Initial, another relative detractor, faced business headwinds for its U.S. pest control business. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class N Shares/JDMNX) 26.32 % 11.46 % 13.21 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000077740 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class R Shares |
| Trading Symbol | JDMRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 1.40 % |
| Expenses Paid, Amount | $ 158 |
| Expense Ratio, Percent | 1.40% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class R Shares returned 25.38%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil Initial, another relative detractor, faced business headwinds for its U.S. pest control business. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class R Shares/JDMRX) 25.38 % 10.63 % 12.37 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000077741 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class S Shares |
| Trading Symbol | JGRTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 1.16 % |
| Expenses Paid, Amount | $ 131 |
| Expense Ratio, Percent | 1.16% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class S Shares returned 25.69%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil Initial, another relative detractor, faced business headwinds for its U.S. pest control business. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class S Shares/JGRTX) 25.69 % 10.91 % 12.65 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000028952 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Enterprise Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAENX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Enterprise Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Enterprise Fund $ 0.90 % |
| Expenses Paid, Amount | $ 102 |
| Expense Ratio, Percent | 0.90% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Enterprise Fund Class T Shares returned 26.02%. Its broad-based benchmark, the Russell 3000 ® ® Top Contributors to Performance GoDaddy contributed to returns relative to the performance benchmark. The website domain registration company has augmented its earnings growth by cross-selling other higher-margin services such as website design and digital payments. Software company Constellation Software, another contributor, benefited from strong competitive positioning and pricing power in niche market segments. Top Detractors from Performance Returns as compared to the performance benchmark were hindered by not owning several stocks that were strong contributors for the index but which we believed carried elevated risk. ON Semiconductor was a relative detractor among owned stocks, as demand for the company’s chips slowed along with electric vehicle sales. Rentokil Initial, another relative detractor, faced business headwinds for its U.S. pest control business. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Enterprise Fund (Class T Shares/JAENX) 26.02 % 11.19 % 12.93 % Russell 3000 ® 35.19 % 15.26 % 12.83 % Russell Midcap ® 29.33 % 11.48 % 11.30 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,784,000,000 |
| Holdings Count | Holding | 80 |
| Advisory Fees Paid, Amount | $ 128,500,000 |
| Investment Company Portfolio Turnover | 15% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 80 Total investment advisory fee paid $ Portfolio turnover rate 15 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 Asset Allocation (% of net assets) Common Stocks 95.4 Investment Companies 4.7 Investments Purchased with Cash Collateral from Securities Lending 0.3 Other (0.4 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.6 GoDaddy Inc 3.6 SS&C Technologies Holdings Inc 3.1 Teleflex Inc 3.1 Boston Scientific Corp 2.9 |
| C000077752 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Life Sciences Fund |
| Class Name | Class A Shares |
| Trading Symbol | JFNAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Life Sciences Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Life Sciences Fund $ 0.98 % |
| Expenses Paid, Amount | $ 111 |
| Expense Ratio, Percent | 0.98% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Life Sciences Fund Class A Shares returned 26.28%. Its broad-based benchmark, the MSCI World Index SM SM ® Top Contributors to Performance Vaxcyte was a key contributor relative to the performance benchmark, aided by positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. ImmunoGen, another relative contributor, has sought to develop antibody-drug conjugates to improve cancer treatment. The company was acquired for a premium by pharmaceutical company AbbVie, benefiting the share price performance. Top Detractors from Performance 89bio and Akero Therapeutics detracted relative to the performance benchmark. Both companies are seeking to develop treatments for liver disease, and both faced uncertainty around clinical trials that pressured their share performance. We felt these concerns were unwarranted and held onto the stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Life Sciences Fund (Class A Shares/JFNAX) at NAV 26.28 % 14.02 % 10.80 % Janus Henderson Global Life Sciences Fund (Class A Shares/JFNAX) at Maximum Offering Price - 5.75% 19.02 % 12.68 % 10.14 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI World Health Care Index SM 20.84 % 11.61 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,732,000,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 32,800,000 |
| Investment Company Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 113 Total investment advisory fee paid $ Portfolio turnover rate 35 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 Asset Allocation (% of net assets) Common Stocks 98.4 Private Placements 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.2 Private Investment in Public Equity (PIPES) 0.2 Investment Companies 0.0 Convertible Corporate Bonds 0.0 Warrants 0.0 Rights 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 |
| C000077753 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Life Sciences Fund |
| Class Name | Class C Shares |
| Trading Symbol | JFNCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Life Sciences Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Life Sciences Fund $ 1.74 % |
| Expenses Paid, Amount | $ 196 |
| Expense Ratio, Percent | 1.74% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Life Sciences Fund Class C Shares returned 25.34%. Its broad-based benchmark, the MSCI World Index SM SM ® Top Contributors to Performance Vaxcyte was a key contributor relative to the performance benchmark, aided by positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. ImmunoGen, another relative contributor, has sought to develop antibody-drug conjugates to improve cancer treatment. The company was acquired for a premium by pharmaceutical company AbbVie, benefiting the share price performance. Top Detractors from Performance 89bio and Akero Therapeutics detracted relative to the performance benchmark. Both companies are seeking to develop treatments for liver disease, and both faced uncertainty around clinical trials that pressured their share performance. We felt these concerns were unwarranted and held onto the stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Life Sciences Fund (Class C Shares/JFNCX) at NAV 25.34 % 13.21 % 9.99 % Janus Henderson Global Life Sciences Fund (Class C Shares/JFNCX) with Contingent Deferred Sales Charge 24.34 % * 13.21 % 9.99 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI World Health Care Index SM 20.84 % 11.61 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,732,000,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 32,800,000 |
| Investment Company Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 113 Total investment advisory fee paid $ Portfolio turnover rate 35 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 Asset Allocation (% of net assets) Common Stocks 98.4 Private Placements 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.2 Private Investment in Public Equity (PIPES) 0.2 Investment Companies 0.0 Convertible Corporate Bonds 0.0 Warrants 0.0 Rights 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 |
| C000083538 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Life Sciences Fund |
| Class Name | Class D Shares |
| Trading Symbol | JNGLX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Life Sciences Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Life Sciences Fund $ 0.80 % |
| Expenses Paid, Amount | $ 91 |
| Expense Ratio, Percent | 0.80% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Life Sciences Fund Class D Shares returned 26.52%. Its broad-based benchmark, the MSCI World Index SM SM ® Top Contributors to Performance Vaxcyte was a key contributor relative to the performance benchmark, aided by positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. ImmunoGen, another relative contributor, has sought to develop antibody-drug conjugates to improve cancer treatment. The company was acquired for a premium by pharmaceutical company AbbVie, benefiting the share price performance. Top Detractors from Performance 89bio and Akero Therapeutics detracted relative to the performance benchmark. Both companies are seeking to develop treatments for liver disease, and both faced uncertainty around clinical trials that pressured their share performance. We felt these concerns were unwarranted and held onto the stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Life Sciences Fund (Class D Shares/JNGLX) 26.52 % 14.22 % 11.00 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI World Health Care Index SM 20.84 % 11.61 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 5,732,000,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 32,800,000 |
| Investment Company Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 113 Total investment advisory fee paid $ Portfolio turnover rate 35 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 Asset Allocation (% of net assets) Common Stocks 98.4 Private Placements 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.2 Private Investment in Public Equity (PIPES) 0.2 Investment Companies 0.0 Convertible Corporate Bonds 0.0 Warrants 0.0 Rights 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 |
| C000077754 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Life Sciences Fund |
| Class Name | Class I Shares |
| Trading Symbol | JFNIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Life Sciences Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Life Sciences Fund $ 0.77 % |
| Expenses Paid, Amount | $ 87 |
| Expense Ratio, Percent | 0.77% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Life Sciences Fund Class I Shares returned 26.56%. Its broad-based benchmark, the MSCI World Index SM SM ® Top Contributors to Performance Vaxcyte was a key contributor relative to the performance benchmark, aided by positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. ImmunoGen, another relative contributor, has sought to develop antibody-drug conjugates to improve cancer treatment. The company was acquired for a premium by pharmaceutical company AbbVie, benefiting the share price performance. Top Detractors from Performance 89bio and Akero Therapeutics detracted relative to the performance benchmark. Both companies are seeking to develop treatments for liver disease, and both faced uncertainty around clinical trials that pressured their share performance. We felt these concerns were unwarranted and held onto the stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Life Sciences Fund (Class I Shares/JFNIX) 26.56 % 14.27 % 11.05 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI World Health Care Index SM 20.84 % 11.61 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,732,000,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 32,800,000 |
| Investment Company Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 113 Total investment advisory fee paid $ Portfolio turnover rate 35 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 Asset Allocation (% of net assets) Common Stocks 98.4 Private Placements 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.2 Private Investment in Public Equity (PIPES) 0.2 Investment Companies 0.0 Convertible Corporate Bonds 0.0 Warrants 0.0 Rights 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 |
| C000198286 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Life Sciences Fund |
| Class Name | Class N Shares |
| Trading Symbol | JFNNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Life Sciences Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Life Sciences Fund $ 0.68 % |
| Expenses Paid, Amount | $ 77 |
| Expense Ratio, Percent | 0.68% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Life Sciences Fund Class N Shares returned 26.69%. Its broad-based benchmark, the MSCI World Index SM SM ® Top Contributors to Performance Vaxcyte was a key contributor relative to the performance benchmark, aided by positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. ImmunoGen, another relative contributor, has sought to develop antibody-drug conjugates to improve cancer treatment. The company was acquired for a premium by pharmaceutical company AbbVie, benefiting the share price performance. Top Detractors from Performance 89bio and Akero Therapeutics detracted relative to the performance benchmark. Both companies are seeking to develop treatments for liver disease, and both faced uncertainty around clinical trials that pressured their share performance. We felt these concerns were unwarranted and held onto the stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Life Sciences Fund (Class N Shares/JFNNX) 26.69 % 14.37 % 11.06 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI World Health Care Index SM 20.84 % 11.61 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,732,000,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 32,800,000 |
| Investment Company Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 113 Total investment advisory fee paid $ Portfolio turnover rate 35 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 Asset Allocation (% of net assets) Common Stocks 98.4 Private Placements 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.2 Private Investment in Public Equity (PIPES) 0.2 Investment Companies 0.0 Convertible Corporate Bonds 0.0 Warrants 0.0 Rights 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 |
| C000077755 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Life Sciences Fund |
| Class Name | Class S Shares |
| Trading Symbol | JFNSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Life Sciences Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Life Sciences Fund $ 1.18 % |
| Expenses Paid, Amount | $ 133 |
| Expense Ratio, Percent | 1.18% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Life Sciences Fund Class S Shares returned 26.04%. Its broad-based benchmark, the MSCI World Index SM SM ® Top Contributors to Performance Vaxcyte was a key contributor relative to the performance benchmark, aided by positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. ImmunoGen, another relative contributor, has sought to develop antibody-drug conjugates to improve cancer treatment. The company was acquired for a premium by pharmaceutical company AbbVie, benefiting the share price performance. Top Detractors from Performance 89bio and Akero Therapeutics detracted relative to the performance benchmark. Both companies are seeking to develop treatments for liver disease, and both faced uncertainty around clinical trials that pressured their share performance. We felt these concerns were unwarranted and held onto the stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Life Sciences Fund (Class S Shares/JFNSX) 26.04 % 13.80 % 10.60 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI World Health Care Index SM 20.84 % 11.61 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,732,000,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 32,800,000 |
| Investment Company Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 113 Total investment advisory fee paid $ Portfolio turnover rate 35 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 Asset Allocation (% of net assets) Common Stocks 98.4 Private Placements 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.2 Private Investment in Public Equity (PIPES) 0.2 Investment Companies 0.0 Convertible Corporate Bonds 0.0 Warrants 0.0 Rights 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 |
| C000028956 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Life Sciences Fund |
| Class Name | Class T Shares |
| Trading Symbol | JAGLX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Life Sciences Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Life Sciences Fund $ 0.91 % |
| Expenses Paid, Amount | $ 103 |
| Expense Ratio, Percent | 0.91% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Life Sciences Fund Class T Shares returned 26.38%. Its broad-based benchmark, the MSCI World Index SM SM ® Top Contributors to Performance Vaxcyte was a key contributor relative to the performance benchmark, aided by positive clinical trial results for its vaccine that targets 31 strains of invasive pneumococcal disease. ImmunoGen, another relative contributor, has sought to develop antibody-drug conjugates to improve cancer treatment. The company was acquired for a premium by pharmaceutical company AbbVie, benefiting the share price performance. Top Detractors from Performance 89bio and Akero Therapeutics detracted relative to the performance benchmark. Both companies are seeking to develop treatments for liver disease, and both faced uncertainty around clinical trials that pressured their share performance. We felt these concerns were unwarranted and held onto the stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Life Sciences Fund (Class T Shares/JAGLX) 26.38 % 14.10 % 10.89 % MSCI World Index SM 32.43 % 13.04 % 10.07 % MSCI World Health Care Index SM 20.84 % 11.61 % 8.96 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,732,000,000 |
| Holdings Count | Holding | 113 |
| Advisory Fees Paid, Amount | $ 32,800,000 |
| Investment Company Portfolio Turnover | 35% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 113 Total investment advisory fee paid $ Portfolio turnover rate 35 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 Asset Allocation (% of net assets) Common Stocks 98.4 Private Placements 0.9 Investments Purchased with Cash Collateral from Securities Lending 0.2 Private Investment in Public Equity (PIPES) 0.2 Investment Companies 0.0 Convertible Corporate Bonds 0.0 Warrants 0.0 Rights 0.0 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Eli Lilly & Co 8.4 UnitedHealth Group Inc 6.8 Novo Nordisk A/S - Class B 4.6 AstraZeneca PLC 3.6 AbbVie Inc 3.6 |
| C000077597 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Real Estate Fund |
| Class Name | Class A Shares |
| Trading Symbol | JERAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Real Estate Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Real Estate Fund $ 0.99 % |
| Expenses Paid, Amount | $ 112 |
| Expense Ratio, Percent | 0.99% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Real Estate Fund Class A Shares returned 25.87%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Australian logistics-focused company Goodman was the leading contributor relative to the performance benchmark. CBRE was another key contributor, due to posting strong results over the period and an improved outlook for office leasing and real estate transactions. A position in U.S. net lease owner Spirit Realty Capital also contributed relative to the performance Top Detractors from Performance China Resources was the leading detractor from returns relative to the performance benchmark. Cold storage owner/operator Americold Realty Trust also detracted after it was affected by negative sentiment around the potential demand implications from new weight-loss drugs. Mexican industrial property company Vesta contributed negatively. Its share price fell following the surprise results of the Mexican election in June, when the Morena party won a supermajority in both houses, heightening fears of undemocratic constitutional changes. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Real Estate Fund (Class A Shares/JERAX) at NAV 25.87 % 2.84 % 5.63 % Janus Henderson Global Real Estate Fund (Class A Shares/JERAX) at Maximum Offering Price - 5.75% 18.60 % 1.63 % 5.00 % MSCI World Index SM 32.43 % 13.04 % 10.07 % FTSE EPRA Nareit Global Index 29.06 % 1.76 % 4.67 % FTSE EPRA Nareit Global Net Index 27.80 % 0.84 % 3.76 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 425,000,000 |
| Holdings Count | Holding | 64 |
| Advisory Fees Paid, Amount | $ 2,200,000 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 64 Total investment advisory fee paid $ Portfolio turnover rate 87 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 Asset Allocation (% of net assets) Common Stocks 99.5 Investments Purchased with Cash Collateral from Securities Lending 1.3 Investment Companies 0.4 Rights 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal |
| C000077598 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Real Estate Fund |
| Class Name | Class C Shares |
| Trading Symbol | JERCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Real Estate Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Real Estate Fund $ 1.79 % |
| Expenses Paid, Amount | $ 201 |
| Expense Ratio, Percent | 1.79% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Real Estate Fund Class C Shares returned 24.87%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Australian logistics-focused company Goodman was the leading contributor relative to the performance benchmark. CBRE was another key contributor, due to posting strong results over the period and an improved outlook for office leasing and real estate transactions. A position in U.S. net lease owner Spirit Realty Capital also contributed relative to the performance Top Detractors from Performance China Resources was the leading detractor from returns relative to the performance benchmark. Cold storage owner/operator Americold Realty Trust also detracted after it was affected by negative sentiment around the potential demand implications from new weight-loss drugs. Mexican industrial property company Vesta contributed negatively. Its share price fell following the surprise results of the Mexican election in June, when the Morena party won a supermajority in both houses, heightening fears of undemocratic constitutional changes. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Real Estate Fund (Class C Shares/JERCX) at NAV 24.87 % 2.02 % 4.81 % Janus Henderson Global Real Estate Fund (Class C Shares/JERCX) with Contingent Deferred Sales Charge 23.87 % * 2.02 % 4.81 % MSCI World Index SM 32.43 % 13.04 % 10.07 % FTSE EPRA Nareit Global Index 29.06 % 1.76 % 4.67 % FTSE EPRA Nareit Global Net Index 27.80 % 0.84 % 3.76 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 425,000,000 |
| Holdings Count | Holding | 64 |
| Advisory Fees Paid, Amount | $ 2,200,000 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 64 Total investment advisory fee paid $ Portfolio turnover rate 87 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 Asset Allocation (% of net assets) Common Stocks 99.5 Investments Purchased with Cash Collateral from Securities Lending 1.3 Investment Companies 0.4 Rights 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal |
| C000083540 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Real Estate Fund |
| Class Name | Class D Shares |
| Trading Symbol | JNGSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Real Estate Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Real Estate Fund $ 0.80 % |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.80% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Real Estate Fund Class D Shares returned 26.15%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Australian logistics-focused company Goodman was the leading contributor relative to the performance benchmark. CBRE was another key contributor, due to posting strong results over the period and an improved outlook for office leasing and real estate transactions. A position in U.S. net lease owner Spirit Realty Capital also contributed relative to the performance Top Detractors from Performance China Resources was the leading detractor from returns relative to the performance benchmark. Cold storage owner/operator Americold Realty Trust also detracted after it was affected by negative sentiment around the potential demand implications from new weight-loss drugs. Mexican industrial property company Vesta contributed negatively. Its share price fell following the surprise results of the Mexican election in June, when the Morena party won a supermajority in both houses, heightening fears of undemocratic constitutional changes. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Real Estate Fund (Class D Shares/JNGSX) 26.15 % 3.03 % 5.81 % MSCI World Index SM 32.43 % 13.04 % 10.07 % FTSE EPRA Nareit Global Index 29.06 % 1.76 % 4.67 % FTSE EPRA Nareit Global Net Index 27.80 % 0.84 % 3.76 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 425,000,000 |
| Holdings Count | Holding | 64 |
| Advisory Fees Paid, Amount | $ 2,200,000 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 64 Total investment advisory fee paid $ Portfolio turnover rate 87 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 Asset Allocation (% of net assets) Common Stocks 99.5 Investments Purchased with Cash Collateral from Securities Lending 1.3 Investment Companies 0.4 Rights 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal |
| C000077599 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Real Estate Fund |
| Class Name | Class I Shares |
| Trading Symbol | JERIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Real Estate Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Real Estate Fund $ 0.73 % |
| Expenses Paid, Amount | $ 83 |
| Expense Ratio, Percent | 0.73% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Real Estate Fund Class I Shares returned 26.17%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Australian logistics-focused company Goodman was the leading contributor relative to the performance benchmark. CBRE was another key contributor, due to posting strong results over the period and an improved outlook for office leasing and real estate transactions. A position in U.S. net lease owner Spirit Realty Capital also contributed relative to the performance Top Detractors from Performance China Resources was the leading detractor from returns relative to the performance benchmark. Cold storage owner/operator Americold Realty Trust also detracted after it was affected by negative sentiment around the potential demand implications from new weight-loss drugs. Mexican industrial property company Vesta contributed negatively. Its share price fell following the surprise results of the Mexican election in June, when the Morena party won a supermajority in both houses, heightening fears of undemocratic constitutional changes. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Real Estate Fund (Class I Shares/JERIX) 26.17 % 3.08 % 5.89 % MSCI World Index SM 32.43 % 13.04 % 10.07 % FTSE EPRA Nareit Global Index 29.06 % 1.76 % 4.67 % FTSE EPRA Nareit Global Net Index 27.80 % 0.84 % 3.76 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 425,000,000 |
| Holdings Count | Holding | 64 |
| Advisory Fees Paid, Amount | $ 2,200,000 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 64 Total investment advisory fee paid $ Portfolio turnover rate 87 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 Asset Allocation (% of net assets) Common Stocks 99.5 Investments Purchased with Cash Collateral from Securities Lending 1.3 Investment Companies 0.4 Rights 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal |
| C000198287 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Real Estate Fund |
| Class Name | Class N Shares |
| Trading Symbol | JERNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Real Estate Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Real Estate Fund $ 0.62 % |
| Expenses Paid, Amount | $ 70 |
| Expense Ratio, Percent | 0.62% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Real Estate Fund Class N Shares returned 26.30%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Australian logistics-focused company Goodman was the leading contributor relative to the performance benchmark. CBRE was another key contributor, due to posting strong results over the period and an improved outlook for office leasing and real estate transactions. A position in U.S. net lease owner Spirit Realty Capital also contributed relative to the performance Top Detractors from Performance China Resources was the leading detractor from returns relative to the performance benchmark. Cold storage owner/operator Americold Realty Trust also detracted after it was affected by negative sentiment around the potential demand implications from new weight-loss drugs. Mexican industrial property company Vesta contributed negatively. Its share price fell following the surprise results of the Mexican election in June, when the Morena party won a supermajority in both houses, heightening fears of undemocratic constitutional changes. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Real Estate Fund (Class N Shares/JERNX) 26.30 % 3.18 % 5.96 % MSCI World Index SM 32.43 % 13.04 % 10.07 % FTSE EPRA Nareit Global Index 29.06 % 1.76 % 4.67 % FTSE EPRA Nareit Global Net Index 27.80 % 0.84 % 3.76 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 425,000,000 |
| Holdings Count | Holding | 64 |
| Advisory Fees Paid, Amount | $ 2,200,000 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 64 Total investment advisory fee paid $ Portfolio turnover rate 87 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 Asset Allocation (% of net assets) Common Stocks 99.5 Investments Purchased with Cash Collateral from Securities Lending 1.3 Investment Companies 0.4 Rights 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal |
| C000077600 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Real Estate Fund |
| Class Name | Class S Shares |
| Trading Symbol | JERSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Real Estate Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Real Estate Fund $ 1.16 % |
| Expenses Paid, Amount | $ 131 |
| Expense Ratio, Percent | 1.16% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Real Estate Fund Class S Shares returned 25.67%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Australian logistics-focused company Goodman was the leading contributor relative to the performance benchmark. CBRE was another key contributor, due to posting strong results over the period and an improved outlook for office leasing and real estate transactions. A position in U.S. net lease owner Spirit Realty Capital also contributed relative to the performance Top Detractors from Performance China Resources was the leading detractor from returns relative to the performance benchmark. Cold storage owner/operator Americold Realty Trust also detracted after it was affected by negative sentiment around the potential demand implications from new weight-loss drugs. Mexican industrial property company Vesta contributed negatively. Its share price fell following the surprise results of the Mexican election in June, when the Morena party won a supermajority in both houses, heightening fears of undemocratic constitutional changes. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Real Estate Fund (Class S Shares/JERSX) 25.67 % 2.66 % 5.44 % MSCI World Index SM 32.43 % 13.04 % 10.07 % FTSE EPRA Nareit Global Index 29.06 % 1.76 % 4.67 % FTSE EPRA Nareit Global Net Index 27.80 % 0.84 % 3.76 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 425,000,000 |
| Holdings Count | Holding | 64 |
| Advisory Fees Paid, Amount | $ 2,200,000 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 64 Total investment advisory fee paid $ Portfolio turnover rate 87 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 Asset Allocation (% of net assets) Common Stocks 99.5 Investments Purchased with Cash Collateral from Securities Lending 1.3 Investment Companies 0.4 Rights 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal |
| C000077601 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Real Estate Fund |
| Class Name | Class T Shares |
| Trading Symbol | JERTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Real Estate Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Material Fund Change Notice [Text Block] | This report describes changes to the Fund that occurred during the reporting period. |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Real Estate Fund $ 0.87 % |
| Expenses Paid, Amount | $ 98 |
| Expense Ratio, Percent | 0.87% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Real Estate Fund Class T Shares returned 26.12%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Australian logistics-focused company Goodman was the leading contributor relative to the performance benchmark. CBRE was another key contributor, due to posting strong results over the period and an improved outlook for office leasing and real estate transactions. A position in U.S. net lease owner Spirit Realty Capital also contributed relative to the performance Top Detractors from Performance China Resources was the leading detractor from returns relative to the performance benchmark. Cold storage owner/operator Americold Realty Trust also detracted after it was affected by negative sentiment around the potential demand implications from new weight-loss drugs. Mexican industrial property company Vesta contributed negatively. Its share price fell following the surprise results of the Mexican election in June, when the Morena party won a supermajority in both houses, heightening fears of undemocratic constitutional changes. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Real Estate Fund (Class T Shares/JERTX) 26.12 % 2.95 % 5.74 % MSCI World Index SM 32.43 % 13.04 % 10.07 % FTSE EPRA Nareit Global Index 29.06 % 1.76 % 4.67 % FTSE EPRA Nareit Global Net Index 27.80 % 0.84 % 3.76 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 425,000,000 |
| Holdings Count | Holding | 64 |
| Advisory Fees Paid, Amount | $ 2,200,000 |
| Investment Company Portfolio Turnover | 87% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 64 Total investment advisory fee paid $ Portfolio turnover rate 87 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 Asset Allocation (% of net assets) Common Stocks 99.5 Investments Purchased with Cash Collateral from Securities Lending 1.3 Investment Companies 0.4 Rights 0.0 Other (1.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Equinix Inc 6.2 Realty Income Corp 5.1 Public Storage 5.0 Welltower Inc 4.7 Prologis Inc 4.2 |
| Material Fund Change [Text Block] | What material changes have occurred since the beginning of the fiscal year? This is a summary of certain changes of the Fund since September 30, 2023. The Fund’s net expense ratio materially changed from the prior fiscal |
| Material Fund Change Expenses [Text Block] | The Fund’s net expense ratio materially changed from the prior fiscal |
| C000077618 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class A Shares |
| Trading Symbol | JDCAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 0.84 % |
| Expenses Paid, Amount | $ 102 |
| Expense Ratio, Percent | 0.84% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class A Shares returned 42.41%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class A Shares/JDCAX) at NAV 42.41 % 16.36 % 15.66 % Janus Henderson Forty Fund (Class A Shares/JDCAX) at Maximum Offering Price - 5.75% 34.22 % 14.99 % 14.98 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000077619 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class C Shares |
| Trading Symbol | JACCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 1.52 % |
| Expenses Paid, Amount | $ 183 |
| Expense Ratio, Percent | 1.52% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class C Shares returned 41.44%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class C Shares/JACCX) at NAV 41.44 % 15.58 % 14.94 % Janus Henderson Forty Fund (Class C Shares/JACCX) with Contingent Deferred Sales Charge 40.44 % * 15.58 % 14.94 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000177054 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class D Shares |
| Trading Symbol | JFRDX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 0.63 % |
| Expenses Paid, Amount | $ 76 |
| Expense Ratio, Percent | 0.63% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class D Shares returned 42.68%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class D Shares/JFRDX) 42.68 % 16.60 % 15.84 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000077620 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class I Shares |
| Trading Symbol | JCAPX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 0.59 % |
| Expenses Paid, Amount | $ 72 |
| Expense Ratio, Percent | 0.59% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class I Shares returned 42.76%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class I Shares/JCAPX) 42.76 % 16.66 % 15.99 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000114888 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class N Shares |
| Trading Symbol | JFRNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 0.52 % |
| Expenses Paid, Amount | $ 63 |
| Expense Ratio, Percent | 0.52% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class N Shares returned 42.86%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class N Shares/JFRNX) 42.86 % 16.74 % 16.08 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000077621 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class R Shares |
| Trading Symbol | JDCRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 1.26 % |
| Expenses Paid, Amount | $ 152 |
| Expense Ratio, Percent | 1.26% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class R Shares returned 41.79%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class R Shares/JDCRX) 41.79 % 15.88 % 15.22 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000077622 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class S Shares |
| Trading Symbol | JARTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 1.00 % |
| Expenses Paid, Amount | $ 121 |
| Expense Ratio, Percent | 1% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class S Shares returned 42.18%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class S Shares/JARTX) 42.18 % 16.18 % 15.52 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000077623 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Forty Fund |
| Class Name | Class T Shares |
| Trading Symbol | JACTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Forty Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Forty Fund $ 0.74 % |
| Expenses Paid, Amount | $ 90 |
| Expense Ratio, Percent | 0.74% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Forty Fund Class T Shares returned 42.52%. Its broad-based benchmark, the Russell 1000 ® ® ® Top Contributors to Performance Howmet Aerospace was a top contributor to returns relative to the performance benchmark. This manufacturer of precision aircraft components delivered several quarters of strong profits growth that surpassed expectations. Enterprise software company Oracle also contributed, supported by growing demand for artificial intelligence and its strong market positioning in cloud infrastructure. Top Detractors from Performance Real estate analytics company CoStar Group was a notable detractor from returns relative to the performance benchmark. Higher interest rates pressured CoStar’s core commercial real estate business through the first half of the 2024. Agricultural equipment maker Deere & Company, another detractor, faced uncertainties around farm fundamentals and elevated interest rates in key markets such as Brazil. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Forty Fund (Class T Shares/JACTX) 42.52 % 16.47 % 15.81 % Russell 1000 ® 35.68 % 15.64 % 13.10 % Russell 1000 ® 42.19 % 19.74 % 16.52 % S&P 500 ® 36.35 % 15.98 % 13.38 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,096,000,000 |
| Holdings Count | Holding | 40 |
| Advisory Fees Paid, Amount | $ 98,000,000 |
| Investment Company Portfolio Turnover | 36% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 40 Total investment advisory fee paid $ Portfolio turnover rate 36 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 1.2 Other (0.3 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 9.7 NVIDIA Corp 8.0 Amazon.com Inc 6.6 Apple Inc 6.4 Meta Platforms Inc - Class A 5.4 |
| C000183873 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Emerging Markets Fund |
| Class Name | Class A Shares |
| Trading Symbol | HEMAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Emerging Markets Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Emerging Markets Fund $ 1.39 % |
| Expenses Paid, Amount | $ 151 |
| Expense Ratio, Percent | 1.39% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Emerging Markets Fund Class A Shares returned 17.00%. Its broad-based benchmark, the MSCI Emerging Markets Index SM Top Contributors to Performance Several Fund holdings in India contributed to returns relative to the benchmark. Online travel agent MakeMyTrip, a top relative contributor, gained market share and strengthened profit margins as it capitalized on accelerating travel spending by higher-income Indian consumers. Bharti Airtel, another contributor, benefited from its strong competitive positioning as one of two major carriers in India’s telecommunications market. Top Detractors from Performance Samsung Electronics detracted from returns relative to the benchmark. The South Korea-based global electronics and semiconductor manufacturer faced competitive challenges and uncertainty around the near-term outlook for semiconductor sales. ZJLD Group was another detractor. Worries over the pace of consumer spending in China pressured the beverage company’s shares despite its brand strength in the baijiu liquor market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Emerging Markets Fund (Class A Shares/HEMAX) at NAV 17.00 % 3.43 % 1.90 % Janus Henderson Emerging Markets Fund (Class A Shares/HEMAX) at Maximum Offering Price - 5.75% 10.30 % 2.22 % 1.30 % MSCI Emerging Markets Index SM 26.05 % 5.75 % 4.02 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 32,000,000 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 100,000 |
| Investment Company Portfolio Turnover | 64% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 59 Total investment advisory fee paid $ Portfolio turnover rate 64 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 Asset Allocation (% of net assets) Common Stocks 98.5 Preferred Stocks 1.9 Private Placements 0.2 Other (0.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 |
| C000183875 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Emerging Markets Fund |
| Class Name | Class C Shares |
| Trading Symbol | HEMCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Emerging Markets Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Emerging Markets Fund $ 2.12 % |
| Expenses Paid, Amount | $ 229 |
| Expense Ratio, Percent | 2.12% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Emerging Markets Fund Class C Shares returned 16.17%. Its broad-based benchmark, the MSCI Emerging Markets Index SM Top Contributors to Performance Several Fund holdings in India contributed to returns relative to the benchmark. Online travel agent MakeMyTrip, a top relative contributor, gained market share and strengthened profit margins as it capitalized on accelerating travel spending by higher-income Indian consumers. Bharti Airtel, another contributor, benefited from its strong competitive positioning as one of two major carriers in India’s telecommunications market. Top Detractors from Performance Samsung Electronics detracted from returns relative to the benchmark. The South Korea-based global electronics and semiconductor manufacturer faced competitive challenges and uncertainty around the near-term outlook for semiconductor sales. ZJLD Group was another detractor. Worries over the pace of consumer spending in China pressured the beverage company’s shares despite its brand strength in the baijiu liquor market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Emerging Markets Fund (Class C Shares/HEMCX) at NAV 16.17 % 2.67 % 1.14 % Janus Henderson Emerging Markets Fund (Class C Shares/HEMCX) with Contingent Deferred Sales Charge 15.17 % * 2.67 % 1.14 % MSCI Emerging Markets Index SM 26.05 % 5.75 % 4.02 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 32,000,000 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 100,000 |
| Investment Company Portfolio Turnover | 64% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 59 Total investment advisory fee paid $ Portfolio turnover rate 64 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 Asset Allocation (% of net assets) Common Stocks 98.5 Preferred Stocks 1.9 Private Placements 0.2 Other (0.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 |
| C000183876 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Emerging Markets Fund |
| Class Name | Class D Shares |
| Trading Symbol | HEMDX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Emerging Markets Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Emerging Markets Fund $ 1.19 % |
| Expenses Paid, Amount | $ 129 |
| Expense Ratio, Percent | 1.19% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Emerging Markets Fund Class D Shares returned 17.27%. Its broad-based benchmark, the MSCI Emerging Markets Index SM Top Contributors to Performance Several Fund holdings in India contributed to returns relative to the benchmark. Online travel agent MakeMyTrip, a top relative contributor, gained market share and strengthened profit margins as it capitalized on accelerating travel spending by higher-income Indian consumers. Bharti Airtel, another contributor, benefited from its strong competitive positioning as one of two major carriers in India’s telecommunications market. Top Detractors from Performance Samsung Electronics detracted from returns relative to the benchmark. The South Korea-based global electronics and semiconductor manufacturer faced competitive challenges and uncertainty around the near-term outlook for semiconductor sales. ZJLD Group was another detractor. Worries over the pace of consumer spending in China pressured the beverage company’s shares despite its brand strength in the baijiu liquor market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Emerging Markets Fund (Class D Shares/HEMDX) 17.27 % 3.65 % 2.03 % MSCI Emerging Markets Index SM 26.05 % 5.75 % 4.02 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 32,000,000 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 100,000 |
| Investment Company Portfolio Turnover | 64% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 59 Total investment advisory fee paid $ Portfolio turnover rate 64 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 Asset Allocation (% of net assets) Common Stocks 98.5 Preferred Stocks 1.9 Private Placements 0.2 Other (0.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 |
| C000183877 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Emerging Markets Fund |
| Class Name | Class I Shares |
| Trading Symbol | HEMIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Emerging Markets Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Emerging Markets Fund $ 1.12 % |
| Expenses Paid, Amount | $ 122 |
| Expense Ratio, Percent | 1.12% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Emerging Markets Fund Class I Shares returned 17.34%. Its broad-based benchmark, the MSCI Emerging Markets Index SM Top Contributors to Performance Several Fund holdings in India contributed to returns relative to the benchmark. Online travel agent MakeMyTrip, a top relative contributor, gained market share and strengthened profit margins as it capitalized on accelerating travel spending by higher-income Indian consumers. Bharti Airtel, another contributor, benefited from its strong competitive positioning as one of two major carriers in India’s telecommunications market. Top Detractors from Performance Samsung Electronics detracted from returns relative to the benchmark. The South Korea-based global electronics and semiconductor manufacturer faced competitive challenges and uncertainty around the near-term outlook for semiconductor sales. ZJLD Group was another detractor. Worries over the pace of consumer spending in China pressured the beverage company’s shares despite its brand strength in the baijiu liquor market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Emerging Markets Fund (Class I Shares/HEMIX) 17.34 % 3.70 % 2.17 % MSCI Emerging Markets Index SM 26.05 % 5.75 % 4.02 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 32,000,000 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 100,000 |
| Investment Company Portfolio Turnover | 64% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 59 Total investment advisory fee paid $ Portfolio turnover rate 64 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 Asset Allocation (% of net assets) Common Stocks 98.5 Preferred Stocks 1.9 Private Placements 0.2 Other (0.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 |
| C000183878 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Emerging Markets Fund |
| Class Name | Class N Shares |
| Trading Symbol | HEMRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Emerging Markets Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Emerging Markets Fund $ 1.04 % |
| Expenses Paid, Amount | $ 113 |
| Expense Ratio, Percent | 1.04% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Emerging Markets Fund Class N Shares returned 17.33%. Its broad-based benchmark, the MSCI Emerging Markets Index SM Top Contributors to Performance Several Fund holdings in India contributed to returns relative to the benchmark. Online travel agent MakeMyTrip, a top relative contributor, gained market share and strengthened profit margins as it capitalized on accelerating travel spending by higher-income Indian consumers. Bharti Airtel, another contributor, benefited from its strong competitive positioning as one of two major carriers in India’s telecommunications market. Top Detractors from Performance Samsung Electronics detracted from returns relative to the benchmark. The South Korea-based global electronics and semiconductor manufacturer faced competitive challenges and uncertainty around the near-term outlook for semiconductor sales. ZJLD Group was another detractor. Worries over the pace of consumer spending in China pressured the beverage company’s shares despite its brand strength in the baijiu liquor market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Emerging Markets Fund (Class N Shares/HEMRX) 17.33 % 3.76 % 2.18 % MSCI Emerging Markets Index SM 26.05 % 5.75 % 4.02 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 32,000,000 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 100,000 |
| Investment Company Portfolio Turnover | 64% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 59 Total investment advisory fee paid $ Portfolio turnover rate 64 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 Asset Allocation (% of net assets) Common Stocks 98.5 Preferred Stocks 1.9 Private Placements 0.2 Other (0.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 |
| C000183880 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Emerging Markets Fund |
| Class Name | Class S Shares |
| Trading Symbol | HEMSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Emerging Markets Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Emerging Markets Fund $ 1.55 % |
| Expenses Paid, Amount | $ 168 |
| Expense Ratio, Percent | 1.55% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Emerging Markets Fund Class S Shares returned 16.80%. Its broad-based benchmark, the MSCI Emerging Markets Index SM Top Contributors to Performance Several Fund holdings in India contributed to returns relative to the benchmark. Online travel agent MakeMyTrip, a top relative contributor, gained market share and strengthened profit margins as it capitalized on accelerating travel spending by higher-income Indian consumers. Bharti Airtel, another contributor, benefited from its strong competitive positioning as one of two major carriers in India’s telecommunications market. Top Detractors from Performance Samsung Electronics detracted from returns relative to the benchmark. The South Korea-based global electronics and semiconductor manufacturer faced competitive challenges and uncertainty around the near-term outlook for semiconductor sales. ZJLD Group was another detractor. Worries over the pace of consumer spending in China pressured the beverage company’s shares despite its brand strength in the baijiu liquor market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Emerging Markets Fund (Class S Shares/HEMSX) 16.80 % 3.28 % 1.76 % MSCI Emerging Markets Index SM 26.05 % 5.75 % 4.02 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 32,000,000 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 100,000 |
| Investment Company Portfolio Turnover | 64% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 59 Total investment advisory fee paid $ Portfolio turnover rate 64 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 Asset Allocation (% of net assets) Common Stocks 98.5 Preferred Stocks 1.9 Private Placements 0.2 Other (0.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 |
| C000183881 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Emerging Markets Fund |
| Class Name | Class T Shares |
| Trading Symbol | HEMTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Emerging Markets Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Emerging Markets Fund $ 1.28 % |
| Expenses Paid, Amount | $ 139 |
| Expense Ratio, Percent | 1.28% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Emerging Markets Fund Class T Shares returned 17.05%. Its broad-based benchmark, the MSCI Emerging Markets Index SM Top Contributors to Performance Several Fund holdings in India contributed to returns relative to the benchmark. Online travel agent MakeMyTrip, a top relative contributor, gained market share and strengthened profit margins as it capitalized on accelerating travel spending by higher-income Indian consumers. Bharti Airtel, another contributor, benefited from its strong competitive positioning as one of two major carriers in India’s telecommunications market. Top Detractors from Performance Samsung Electronics detracted from returns relative to the benchmark. The South Korea-based global electronics and semiconductor manufacturer faced competitive challenges and uncertainty around the near-term outlook for semiconductor sales. ZJLD Group was another detractor. Worries over the pace of consumer spending in China pressured the beverage company’s shares despite its brand strength in the baijiu liquor market. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Emerging Markets Fund (Class T Shares/HEMTX) 17.05 % 3.52 % 1.94 % MSCI Emerging Markets Index SM 26.05 % 5.75 % 4.02 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 32,000,000 |
| Holdings Count | Holding | 59 |
| Advisory Fees Paid, Amount | $ 100,000 |
| Investment Company Portfolio Turnover | 64% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 59 Total investment advisory fee paid $ Portfolio turnover rate 64 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 Asset Allocation (% of net assets) Common Stocks 98.5 Preferred Stocks 1.9 Private Placements 0.2 Other (0.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 9.9 Samsung Electronics Co Ltd 6.7 Tencent Holdings Ltd 3.7 Bharti Airtel Ltd 3.5 AIA Group Ltd 3.2 |
| C000183893 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Equity Income Fund |
| Class Name | Class A Shares |
| Trading Symbol | HFQAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Equity Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Equity Income Fund $ 1.15 % |
| Expenses Paid, Amount | $ 127 |
| Expense Ratio, Percent | 1.15% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Equity Income Fund Class A Shares returned 21.09%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance U.S. semiconductor manufacturer Qualcomm and electronics companies Taiwan Semiconductor and Hon Hai were key contributors relative to the broad-based benchmark, as enthusiasm for artificial intelligence-related stocks continued until near period end. UK bank NatWest and UK food retailer Tesco also contributed to results. NatWest benefited from the higher interest rate environment and its exposure to a strengthening UK economy, while Tesco saw stronger sales as inflation fell, making grocery spend a smaller part of household expenses. Top Detractors from Performance Energy companies BP and Equinor detracted, as volatility around oil prices caused by escalating tensions in the Middle East and a weakening demand outlook hurt their share price. Korean technology company Samsung Electronics also hindered results as lower-than-expected demand for memory chips weighed on the share price. Daimler Trucks was another relative detractor as it experienced a slowing of orders within Europe and difficult performance in China due to the macroeconomic weakness of the region. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Equity Income Fund (Class A Shares/HFQAX) at NAV 21.09 % 7.42 % 5.10 % Janus Henderson Global Equity Income Fund (Class A Shares/HFQAX) at Maximum Offering Price - 5.75% 14.10 % 6.16 % 4.48 % MSCI World Index SM 32.43 % 13.04 % 10.07 % 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index 24.84 % 8.10 % 5.41 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,869,000,000 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 37,400,000 |
| Investment Company Portfolio Turnover | 155% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 71 Total investment advisory fee paid $ Portfolio turnover rate 155 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 Asset Allocation (% of net assets) Common Stocks 93.5 Investment Companies 3.7 Preferred Stocks 1.7 Other 1.1 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 |
| C000183894 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Equity Income Fund |
| Class Name | Class C Shares |
| Trading Symbol | HFQCX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Equity Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Equity Income Fund $ 1.73 % |
| Expenses Paid, Amount | $ 191 |
| Expense Ratio, Percent | 1.73% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Equity Income Fund Class C Shares returned 20.29%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance U.S. semiconductor manufacturer Qualcomm and electronics companies Taiwan Semiconductor and Hon Hai were key contributors relative to the broad-based benchmark, as enthusiasm for artificial intelligence-related stocks continued until near period end. UK bank NatWest and UK food retailer Tesco also contributed to results. NatWest benefited from the higher interest rate environment and its exposure to a strengthening UK economy, while Tesco saw stronger sales as inflation fell, making grocery spend a smaller part of household expenses. Top Detractors from Performance Energy companies BP and Equinor detracted, as volatility around oil prices caused by escalating tensions in the Middle East and a weakening demand outlook hurt their share price. Korean technology company Samsung Electronics also hindered results as lower-than-expected demand for memory chips weighed on the share price. Daimler Trucks was another relative detractor as it experienced a slowing of orders within Europe and difficult performance in China due to the macroeconomic weakness of the region. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Equity Income Fund (Class C Shares/HFQCX) at NAV 20.29 % 6.69 % 4.38 % Janus Henderson Global Equity Income Fund (Class C Shares/HFQCX) with Contingent Deferred Sales Charge 19.29 % * 6.69 % 4.38 % MSCI World Index SM 32.43 % 13.04 % 10.07 % 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index 24.84 % 8.10 % 5.41 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,869,000,000 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 37,400,000 |
| Investment Company Portfolio Turnover | 155% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 71 Total investment advisory fee paid $ Portfolio turnover rate 155 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 Asset Allocation (% of net assets) Common Stocks 93.5 Investment Companies 3.7 Preferred Stocks 1.7 Other 1.1 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 |
| C000183895 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Equity Income Fund |
| Class Name | Class D Shares |
| Trading Symbol | HFQDX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Equity Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Equity Income Fund $ 0.87 % |
| Expenses Paid, Amount | $ 96 |
| Expense Ratio, Percent | 0.87% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Equity Income Fund Class D Shares returned 21.48%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance U.S. semiconductor manufacturer Qualcomm and electronics companies Taiwan Semiconductor and Hon Hai were key contributors relative to the broad-based benchmark, as enthusiasm for artificial intelligence-related stocks continued until near period end. UK bank NatWest and UK food retailer Tesco also contributed to results. NatWest benefited from the higher interest rate environment and its exposure to a strengthening UK economy, while Tesco saw stronger sales as inflation fell, making grocery spend a smaller part of household expenses. Top Detractors from Performance Energy companies BP and Equinor detracted, as volatility around oil prices caused by escalating tensions in the Middle East and a weakening demand outlook hurt their share price. Korean technology company Samsung Electronics also hindered results as lower-than-expected demand for memory chips weighed on the share price. Daimler Trucks was another relative detractor as it experienced a slowing of orders within Europe and difficult performance in China due to the macroeconomic weakness of the region. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Equity Income Fund (Class D Shares/HFQDX) 21.48 % 7.66 % 5.27 % MSCI World Index SM 32.43 % 13.04 % 10.07 % 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index 24.84 % 8.10 % 5.41 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 5,869,000,000 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 37,400,000 |
| Investment Company Portfolio Turnover | 155% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 71 Total investment advisory fee paid $ Portfolio turnover rate 155 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 Asset Allocation (% of net assets) Common Stocks 93.5 Investment Companies 3.7 Preferred Stocks 1.7 Other 1.1 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 |
| C000183896 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Equity Income Fund |
| Class Name | Class I Shares |
| Trading Symbol | HFQIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Equity Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Equity Income Fund $ 0.79 % |
| Expenses Paid, Amount | $ 87 |
| Expense Ratio, Percent | 0.79% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Equity Income Fund Class I Shares returned 21.39%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance U.S. semiconductor manufacturer Qualcomm and electronics companies Taiwan Semiconductor and Hon Hai were key contributors relative to the broad-based benchmark, as enthusiasm for artificial intelligence-related stocks continued until near period end. UK bank NatWest and UK food retailer Tesco also contributed to results. NatWest benefited from the higher interest rate environment and its exposure to a strengthening UK economy, while Tesco saw stronger sales as inflation fell, making grocery spend a smaller part of household expenses. Top Detractors from Performance Energy companies BP and Equinor detracted, as volatility around oil prices caused by escalating tensions in the Middle East and a weakening demand outlook hurt their share price. Korean technology company Samsung Electronics also hindered results as lower-than-expected demand for memory chips weighed on the share price. Daimler Trucks was another relative detractor as it experienced a slowing of orders within Europe and difficult performance in China due to the macroeconomic weakness of the region. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Equity Income Fund (Class I Shares/HFQIX) 21.39 % 7.74 % 5.42 % MSCI World Index SM 32.43 % 13.04 % 10.07 % 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index 24.84 % 8.10 % 5.41 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,869,000,000 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 37,400,000 |
| Investment Company Portfolio Turnover | 155% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 71 Total investment advisory fee paid $ Portfolio turnover rate 155 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 Asset Allocation (% of net assets) Common Stocks 93.5 Investment Companies 3.7 Preferred Stocks 1.7 Other 1.1 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 |
| C000183897 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Equity Income Fund |
| Class Name | Class N Shares |
| Trading Symbol | HFQRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Equity Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Equity Income Fund $ 0.70 % |
| Expenses Paid, Amount | $ 78 |
| Expense Ratio, Percent | 0.70% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Equity Income Fund Class N Shares returned 21.50%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance U.S. semiconductor manufacturer Qualcomm and electronics companies Taiwan Semiconductor and Hon Hai were key contributors relative to the broad-based benchmark, as enthusiasm for artificial intelligence-related stocks continued until near period end. UK bank NatWest and UK food retailer Tesco also contributed to results. NatWest benefited from the higher interest rate environment and its exposure to a strengthening UK economy, while Tesco saw stronger sales as inflation fell, making grocery spend a smaller part of household expenses. Top Detractors from Performance Energy companies BP and Equinor detracted, as volatility around oil prices caused by escalating tensions in the Middle East and a weakening demand outlook hurt their share price. Korean technology company Samsung Electronics also hindered results as lower-than-expected demand for memory chips weighed on the share price. Daimler Trucks was another relative detractor as it experienced a slowing of orders within Europe and difficult performance in China due to the macroeconomic weakness of the region. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Equity Income Fund (Class N Shares/HFQRX) 21.50 % 7.82 % 5.46 % MSCI World Index SM 32.43 % 13.04 % 10.07 % 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index 24.84 % 8.10 % 5.41 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,869,000,000 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 37,400,000 |
| Investment Company Portfolio Turnover | 155% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 71 Total investment advisory fee paid $ Portfolio turnover rate 155 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 Asset Allocation (% of net assets) Common Stocks 93.5 Investment Companies 3.7 Preferred Stocks 1.7 Other 1.1 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 |
| C000183899 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Equity Income Fund |
| Class Name | Class S Shares |
| Trading Symbol | HFQSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Equity Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Equity Income Fund $ 1.20 % |
| Expenses Paid, Amount | $ 133 |
| Expense Ratio, Percent | 1.20% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Equity Income Fund Class S Shares returned 20.89%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance U.S. semiconductor manufacturer Qualcomm and electronics companies Taiwan Semiconductor and Hon Hai were key contributors relative to the broad-based benchmark, as enthusiasm for artificial intelligence-related stocks continued until near period end. UK bank NatWest and UK food retailer Tesco also contributed to results. NatWest benefited from the higher interest rate environment and its exposure to a strengthening UK economy, while Tesco saw stronger sales as inflation fell, making grocery spend a smaller part of household expenses. Top Detractors from Performance Energy companies BP and Equinor detracted, as volatility around oil prices caused by escalating tensions in the Middle East and a weakening demand outlook hurt their share price. Korean technology company Samsung Electronics also hindered results as lower-than-expected demand for memory chips weighed on the share price. Daimler Trucks was another relative detractor as it experienced a slowing of orders within Europe and difficult performance in China due to the macroeconomic weakness of the region. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Equity Income Fund (Class S Shares/HFQSX) 20.89 % 7.25 % 4.96 % MSCI World Index SM 32.43 % 13.04 % 10.07 % 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index 24.84 % 8.10 % 5.41 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,869,000,000 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 37,400,000 |
| Investment Company Portfolio Turnover | 155% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 71 Total investment advisory fee paid $ Portfolio turnover rate 155 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 Asset Allocation (% of net assets) Common Stocks 93.5 Investment Companies 3.7 Preferred Stocks 1.7 Other 1.1 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 |
| C000183900 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Equity Income Fund |
| Class Name | Class T Shares |
| Trading Symbol | HFQTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Equity Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Equity Income Fund $ 0.93 % |
| Expenses Paid, Amount | $ 103 |
| Expense Ratio, Percent | 0.93% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Equity Income Fund Class T Shares returned 21.21%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance U.S. semiconductor manufacturer Qualcomm and electronics companies Taiwan Semiconductor and Hon Hai were key contributors relative to the broad-based benchmark, as enthusiasm for artificial intelligence-related stocks continued until near period end. UK bank NatWest and UK food retailer Tesco also contributed to results. NatWest benefited from the higher interest rate environment and its exposure to a strengthening UK economy, while Tesco saw stronger sales as inflation fell, making grocery spend a smaller part of household expenses. Top Detractors from Performance Energy companies BP and Equinor detracted, as volatility around oil prices caused by escalating tensions in the Middle East and a weakening demand outlook hurt their share price. Korean technology company Samsung Electronics also hindered results as lower-than-expected demand for memory chips weighed on the share price. Daimler Trucks was another relative detractor as it experienced a slowing of orders within Europe and difficult performance in China due to the macroeconomic weakness of the region. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson Global Equity Income Fund (Class T Shares/HFQTX) 21.21 % 7.58 % 5.22 % MSCI World Index SM 32.43 % 13.04 % 10.07 % 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index 24.84 % 8.10 % 5.41 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 5,869,000,000 |
| Holdings Count | Holding | 71 |
| Advisory Fees Paid, Amount | $ 37,400,000 |
| Investment Company Portfolio Turnover | 155% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 71 Total investment advisory fee paid $ Portfolio turnover rate 155 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 Asset Allocation (% of net assets) Common Stocks 93.5 Investment Companies 3.7 Preferred Stocks 1.7 Other 1.1 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) British American Tobacco PLC 3.9 Verizon Communications Inc 3.2 Unilever PLC 3.1 Pernod Ricard SA 3.0 Rio Tinto PLC 2.7 |
| C000183903 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson European Focus Fund |
| Class Name | Class A Shares |
| Trading Symbol | HFEAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson European Focus Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson European Focus Fund $ 1.29 % |
| Expenses Paid, Amount | $ 147 |
| Expense Ratio, Percent | 1.29% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson European Focus Fund Class A Shares returned 27.55%. Its broad-based benchmark, the MSCI Europe Index SM Top Contributors to Performance Our holdings in BE Semiconductor, ASML, and ASM International (all semiconductor stocks) benefited returns relative to the benchmark. On the back of a Top Detractors from Performance Our underweight position in Sanofi (a French pharmaceutical company) detracted from relative performance. The company announced a lower profit outlook and a spinout of its consumer care unit in October 2023. However, it recovered strongly over the rest of the period. Universal Music Group, the Dutch music company, detracted due to unexpectedly slowing subscription growth in July. Anglo American, the mining company, also detracted as Chinese macroeconomic negativity led to weakness in mining stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson European Focus Fund (Class A Shares/HFEAX) at NAV 27.55 % 14.17 % 5.52 % Janus Henderson European Focus Fund (Class A Shares/HFEAX) at Maximum Offering Price - 5.75% 20.22 % 12.83 % 4.89 % MSCI Europe Index SM 25.23 % 8.90 % 5.59 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 504,000,000 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 4,100,000 |
| Investment Company Portfolio Turnover | 168% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 43 Total investment advisory fee paid $ Portfolio turnover rate 168 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 0.6 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 |
| C000183904 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson European Focus Fund |
| Class Name | Class C Shares |
| Trading Symbol | HFECX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson European Focus Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson European Focus Fund $ 2.02 % |
| Expenses Paid, Amount | $ 229 |
| Expense Ratio, Percent | 2.02% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson European Focus Fund Class C Shares returned 26.61%. Its broad-based benchmark, the MSCI Europe Index SM Top Contributors to Performance Our holdings in BE Semiconductor, ASML, and ASM International (all semiconductor stocks) benefited returns relative to the benchmark. On the back of a Top Detractors from Performance Our underweight position in Sanofi (a French pharmaceutical company) detracted from relative performance. The company announced a lower profit outlook and a spinout of its consumer care unit in October 2023. However, it recovered strongly over the rest of the period. Universal Music Group, the Dutch music company, detracted due to unexpectedly slowing subscription growth in July. Anglo American, the mining company, also detracted as Chinese macroeconomic negativity led to weakness in mining stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson European Focus Fund (Class C Shares/HFECX) at NAV 26.61 % 13.31 % 4.71 % Janus Henderson European Focus Fund (Class C Shares/HFECX) with Contingent Deferred Sales Charge 25.61 % * 13.31 % 4.71 % MSCI Europe Index SM 25.23 % 8.90 % 5.59 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 504,000,000 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 4,100,000 |
| Investment Company Portfolio Turnover | 168% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 43 Total investment advisory fee paid $ Portfolio turnover rate 168 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 0.6 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 |
| C000183905 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson European Focus Fund |
| Class Name | Class D Shares |
| Trading Symbol | HFEDX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson European Focus Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson European Focus Fund $ 1.10 % |
| Expenses Paid, Amount | $ 125 |
| Expense Ratio, Percent | 1.10% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson European Focus Fund Class D Shares returned 27.82%. Its broad-based benchmark, the MSCI Europe Index SM Top Contributors to Performance Our holdings in BE Semiconductor, ASML, and ASM International (all semiconductor stocks) benefited returns relative to the benchmark. On the back of a Top Detractors from Performance Our underweight position in Sanofi (a French pharmaceutical company) detracted from relative performance. The company announced a lower profit outlook and a spinout of its consumer care unit in October 2023. However, it recovered strongly over the rest of the period. Universal Music Group, the Dutch music company, detracted due to unexpectedly slowing subscription growth in July. Anglo American, the mining company, also detracted as Chinese macroeconomic negativity led to weakness in mining stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson European Focus Fund (Class D Shares/HFEDX) 27.82 % 14.39 % 5.66 % MSCI Europe Index SM 25.23 % 8.90 % 5.59 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 504,000,000 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 4,100,000 |
| Investment Company Portfolio Turnover | 168% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 43 Total investment advisory fee paid $ Portfolio turnover rate 168 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 0.6 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 |
| C000183906 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson European Focus Fund |
| Class Name | Class I Shares |
| Trading Symbol | HFEIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson European Focus Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson European Focus Fund $ 1.05 % |
| Expenses Paid, Amount | $ 120 |
| Expense Ratio, Percent | 1.05% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson European Focus Fund Class I Shares returned 27.85%. Its broad-based benchmark, the MSCI Europe Index SM Top Contributors to Performance Our holdings in BE Semiconductor, ASML, and ASM International (all semiconductor stocks) benefited returns relative to the benchmark. On the back of a Top Detractors from Performance Our underweight position in Sanofi (a French pharmaceutical company) detracted from relative performance. The company announced a lower profit outlook and a spinout of its consumer care unit in October 2023. However, it recovered strongly over the rest of the period. Universal Music Group, the Dutch music company, detracted due to unexpectedly slowing subscription growth in July. Anglo American, the mining company, also detracted as Chinese macroeconomic negativity led to weakness in mining stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson European Focus Fund (Class I Shares/HFEIX) 27.85 % 14.46 % 5.79 % MSCI Europe Index SM 25.23 % 8.90 % 5.59 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 504,000,000 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 4,100,000 |
| Investment Company Portfolio Turnover | 168% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 43 Total investment advisory fee paid $ Portfolio turnover rate 168 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 0.6 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 |
| C000183907 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson European Focus Fund |
| Class Name | Class N Shares |
| Trading Symbol | HFERX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson European Focus Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson European Focus Fund $ 0.96 % |
| Expenses Paid, Amount | $ 109 |
| Expense Ratio, Percent | 0.96% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson European Focus Fund Class N Shares returned 27.93%. Its broad-based benchmark, the MSCI Europe Index SM Top Contributors to Performance Our holdings in BE Semiconductor, ASML, and ASM International (all semiconductor stocks) benefited returns relative to the benchmark. On the back of a Top Detractors from Performance Our underweight position in Sanofi (a French pharmaceutical company) detracted from relative performance. The company announced a lower profit outlook and a spinout of its consumer care unit in October 2023. However, it recovered strongly over the rest of the period. Universal Music Group, the Dutch music company, detracted due to unexpectedly slowing subscription growth in July. Anglo American, the mining company, also detracted as Chinese macroeconomic negativity led to weakness in mining stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson European Focus Fund (Class N Shares/HFERX) 27.93 % 14.54 % 5.80 % MSCI Europe Index SM 25.23 % 8.90 % 5.59 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 504,000,000 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 4,100,000 |
| Investment Company Portfolio Turnover | 168% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 43 Total investment advisory fee paid $ Portfolio turnover rate 168 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 0.6 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 |
| C000183909 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson European Focus Fund |
| Class Name | Class S Shares |
| Trading Symbol | HFESX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson European Focus Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson European Focus Fund $ 1.40 % |
| Expenses Paid, Amount | $ 159 |
| Expense Ratio, Percent | 1.40% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson European Focus Fund Class S Shares returned 27.42%. Its broad-based benchmark, the MSCI Europe Index SM Top Contributors to Performance Our holdings in BE Semiconductor, ASML, and ASM International (all semiconductor stocks) benefited returns relative to the benchmark. On the back of a Top Detractors from Performance Our underweight position in Sanofi (a French pharmaceutical company) detracted from relative performance. The company announced a lower profit outlook and a spinout of its consumer care unit in October 2023. However, it recovered strongly over the rest of the period. Universal Music Group, the Dutch music company, detracted due to unexpectedly slowing subscription growth in July. Anglo American, the mining company, also detracted as Chinese macroeconomic negativity led to weakness in mining stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson European Focus Fund (Class S Shares/HFESX) 27.42 % 14.23 % 5.51 % MSCI Europe Index SM 25.23 % 8.90 % 5.59 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 504,000,000 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 4,100,000 |
| Investment Company Portfolio Turnover | 168% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 43 Total investment advisory fee paid $ Portfolio turnover rate 168 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 0.6 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 |
| C000183910 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson European Focus Fund |
| Class Name | Class T Shares |
| Trading Symbol | HFETX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson European Focus Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson European Focus Fund $ 1.21 % |
| Expenses Paid, Amount | $ 138 |
| Expense Ratio, Percent | 1.21% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson European Focus Fund Class T Shares returned 27.66%. Its broad-based benchmark, the MSCI Europe Index SM Top Contributors to Performance Our holdings in BE Semiconductor, ASML, and ASM International (all semiconductor stocks) benefited returns relative to the benchmark. On the back of a Top Detractors from Performance Our underweight position in Sanofi (a French pharmaceutical company) detracted from relative performance. The company announced a lower profit outlook and a spinout of its consumer care unit in October 2023. However, it recovered strongly over the rest of the period. Universal Music Group, the Dutch music company, detracted due to unexpectedly slowing subscription growth in July. Anglo American, the mining company, also detracted as Chinese macroeconomic negativity led to weakness in mining stocks. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment September 30, 2014, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year 5 Year 10 Year Janus Henderson European Focus Fund (Class T Shares/HFETX) 27.66 % 14.27 % 5.59 % MSCI Europe Index SM 25.23 % 8.90 % 5.59 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 504,000,000 |
| Holdings Count | Holding | 43 |
| Advisory Fees Paid, Amount | $ 4,100,000 |
| Investment Company Portfolio Turnover | 168% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 43 Total investment advisory fee paid $ Portfolio turnover rate 168 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 Asset Allocation (% of net assets) Common Stocks 99.1 Investment Companies 0.6 Other 0.3 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) ASML Holding NV 4.3 Novartis AG 4.1 LVMH Moet Hennessy Louis Vuitton SE 3.9 Novo Nordisk A/S - Class B 3.8 TotalEnergies SE 3.6 |
| C000219909 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class A Shares |
| Trading Symbol | JEASX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 1.23 % |
| Expenses Paid, Amount | $ 143 |
| Expense Ratio, Percent | 1.23% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class A Shares returned 33.14%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class A Shares/JEASX) at NAV 33.14 % 12.46 % Janus Henderson Global Sustainable Equity Fund (Class A Shares/JEASX) at Maximum Offering Price - 5.75% 25.53 % 10.90 % MSCI World Index SM 32.43 % 14.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000219911 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class C Shares |
| Trading Symbol | JECTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 1.31 % |
| Expenses Paid, Amount | $ 153 |
| Expense Ratio, Percent | 1.31% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class C Shares returned 33.03%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class C Shares/JECTX) at NAV 33.03 % 12.46 % Janus Henderson Global Sustainable Equity Fund (Class C Shares/JECTX) with Contingent Deferred Sales Charge 32.03 % * 12.46 % MSCI World Index SM 32.43 % 14.95 % * Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000219910 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class D Shares |
| Trading Symbol | JEDTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 1.00 % |
| Expenses Paid, Amount | $ 117 |
| Expense Ratio, Percent | 1% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class D Shares returned 33.39%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class D Shares/JEDTX) 33.39 % 12.58 % MSCI World Index SM 32.43 % 14.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000219912 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class I Shares |
| Trading Symbol | JEUIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 1.01 % |
| Expenses Paid, Amount | $ 118 |
| Expense Ratio, Percent | 1.01% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class I Shares returned 33.42%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class I Shares/JEUIX) 33.42 % 12.63 % MSCI World Index SM 32.43 % 14.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000219908 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class N Shares |
| Trading Symbol | JETNX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 0.87 % |
| Expenses Paid, Amount | $ 102 |
| Expense Ratio, Percent | 0.87% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class N Shares returned 33.62%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class N Shares/JETNX) 33.62 % 12.75 % MSCI World Index SM 32.43 % 14.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000225293 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class R Shares |
| Trading Symbol | JEGRX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 1.08 % |
| Expenses Paid, Amount | $ 126 |
| Expense Ratio, Percent | 1.08% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class R Shares returned 33.31%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class R Shares/JEGRX) 33.31 % 12.50 % MSCI World Index SM 32.43 % 14.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000219906 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class S Shares |
| Trading Symbol | JESSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 1.00 % |
| Expenses Paid, Amount | $ 117 |
| Expense Ratio, Percent | 1% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class S Shares returned 33.49%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class S Shares/JESSX) 33.49 % 12.57 % MSCI World Index SM 32.43 % 14.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000219907 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson Global Sustainable Equity Fund |
| Class Name | Class T Shares |
| Trading Symbol | JETTX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson Global Sustainable Equity Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson Global Sustainable Equity Fund $ 1.11 % |
| Expenses Paid, Amount | $ 129 |
| Expense Ratio, Percent | 1.11% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson Global Sustainable Equity Fund Class T Shares returned 33.30%. Its broad-based benchmark, the MSCI World Index SM Top Contributors to Performance Sector allocation contributed to relative performance. A structural underweight in the energy sector and an overweight in the information technology sector were especially positive. Individual stock contributors included semiconductor firm NVIDIA and rail equipment and systems provider Wabtec. NVIDIA posted strong results, and we see the company as well placed to benefit from earnings upgrades. Wabtec also enjoyed strong results and raised its full-year guidance. Top Detractors from Performance Stock selection within the healthcare sector detracted relative to the benchmark, due in part to a position in Humana. The healthcare insurer reported increasing hospital utilization trends, which led to concerns about lower margins in the future. Additionally, there was speculation Humana would face a downgrade in its star ratings, which are assigned and published by the Centers for Medicare and Medicaid Services. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment June 25, 2020, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson Global Sustainable Equity Fund (Class T Shares/JETTX) 33.30 % 12.48 % MSCI World Index SM 32.43 % 14.95 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 36,000,000 |
| Holdings Count | Holding | 55 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 25% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 55 Total investment advisory fee paid $ Portfolio turnover rate 25 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 Asset Allocation (% of net assets) Common Stocks 99.0 Investment Companies 1.5 Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 5.7 NVIDIA Corp 4.3 Schneider Electric SE 3.4 Wabtec Corp 3.3 Progressive Corp/The 3.2 |
| C000240132 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson U.S. Dividend Income Fund |
| Class Name | Class D Shares |
| Trading Symbol | JDDVX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson U.S. Dividend Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/reports |
| Additional Information Phone Number | 1-800-525-3713 |
| Additional Information Website | janushenderson.com/reports |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson U.S. Dividend Income Fund $ 0.89 % |
| Expenses Paid, Amount | $ 100 |
| Expense Ratio, Percent | 0.89% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson U.S. Dividend Income Fund Class D Shares returned 23.89%. Its broad-based benchmark, the Russell 1000 ® ® Top Contributors to Performance Broadcom was a top contributor to returns relative to the performance benchmark. The semiconductor and infrastructure software solutions provider benefited from increased technology spending to support the rollout of artificial intelligence. Financial services firm American Express, another contributor, saw a significant profit increase driven by higher customer balances and spending by affluent cardmembers. Top Detractors from Performance Our emphasis on high-quality, dividend-growth stocks hindered returns relative to the performance benchmark, as we did not own several non- or lower-dividend-paying mega-cap technology stocks that were strong drivers of index returns. Starbucks was a relative detractor among stocks we owned, as the coffee purveyor faced slower consumer discretionary spending and higher costs. Oil and gas company ConocoPhillips also underperformed after reporting disappointing earnings. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment December 20, 2022, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson U.S. Dividend Income Fund (Class D Shares/JDDVX) 23.89 % 12.64 % Russell 1000 ® 35.68 % 27.56 % Russell 1000 ® 27.76 % 16.82 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/reports |
| Net Assets | $ 22,000,000 |
| Holdings Count | Holding | 52 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 81% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 52 Total investment advisory fee paid $ Portfolio turnover rate 81 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) International Business Machines Corp 4.7 JPMorgan Chase & Co 4.4 CME Group Inc 3.4 UnitedHealth Group Inc 3.2 AbbVie Inc 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.2 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) International Business Machines Corp 4.7 JPMorgan Chase & Co 4.4 CME Group Inc 3.4 UnitedHealth Group Inc 3.2 AbbVie Inc 3.1 |
| C000240130 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson U.S. Dividend Income Fund |
| Class Name | Class I Shares |
| Trading Symbol | JIDVX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson U.S. Dividend Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson U.S. Dividend Income Fund $ 0.79 % |
| Expenses Paid, Amount | $ 88 |
| Expense Ratio, Percent | 0.79% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson U.S. Dividend Income Fund Class I Shares returned 23.94%. Its broad-based benchmark, the Russell 1000 ® ® Top Contributors to Performance Broadcom was a top contributor to returns relative to the performance benchmark. The semiconductor and infrastructure software solutions provider benefited from increased technology spending to support the rollout of artificial intelligence. Financial services firm American Express, another contributor, saw a significant profit increase driven by higher customer balances and spending by affluent cardmembers. Top Detractors from Performance Our emphasis on high-quality, dividend-growth stocks hindered returns relative to the performance benchmark, as we did not own several non- or lower-dividend-paying mega-cap technology stocks that were strong drivers of index returns. Starbucks was a relative detractor among stocks we owned, as the coffee purveyor faced slower consumer discretionary spending and higher costs. Oil and gas company ConocoPhillips also underperformed after reporting disappointing earnings. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment December 20, 2022, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson U.S. Dividend Income Fund (Class I Shares/JIDVX) 23.94 % 12.71 % Russell 1000 ® 35.68 % 27.56 % Russell 1000 ® 27.76 % 16.82 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,000,000 |
| Holdings Count | Holding | 52 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 81% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 52 Total investment advisory fee paid $ Portfolio turnover rate 81 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) International Business Machines Corp 4.7 JPMorgan Chase & Co 4.4 CME Group Inc 3.4 UnitedHealth Group Inc 3.2 AbbVie Inc 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.2 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) International Business Machines Corp 4.7 JPMorgan Chase & Co 4.4 CME Group Inc 3.4 UnitedHealth Group Inc 3.2 AbbVie Inc 3.1 |
| C000240131 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson U.S. Dividend Income Fund |
| Class Name | Class N Shares |
| Trading Symbol | JNDVX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the Janus Henderson U.S. Dividend Income Fund (the "Fund”) for the period of October 1, 2023 to September 30, 2024. |
| Shareholder Report Annual or Semi-Annual | annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Fund at janushenderson.com/info |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/info |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Fund (Class) Cost of a Cost paid as a percentage Janus Henderson U.S. Dividend Income Fund $ 0.76 % |
| Expenses Paid, Amount | $ 85 |
| Expense Ratio, Percent | 0.76% |
| Factors Affecting Performance [Text Block] | What impacted Fund performance over the reporting period? For the 12-month period ended September 30, 2024, the Janus Henderson U.S. Dividend Income Fund Class N Shares returned 23.95%. Its broad-based benchmark, the Russell 1000 ® ® Top Contributors to Performance Broadcom was a top contributor to returns relative to the performance benchmark. The semiconductor and infrastructure software solutions provider benefited from increased technology spending to support the rollout of artificial intelligence. Financial services firm American Express, another contributor, saw a significant profit increase driven by higher customer balances and spending by affluent cardmembers. Top Detractors from Performance Our emphasis on high-quality, dividend-growth stocks hindered returns relative to the performance benchmark, as we did not own several non- or lower-dividend-paying mega-cap technology stocks that were strong drivers of index returns. Starbucks was a relative detractor among stocks we owned, as the coffee purveyor faced slower consumer discretionary spending and higher costs. Oil and gas company ConocoPhillips also underperformed after reporting disappointing earnings. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future. |
| Line Graph [Table Text Block] | Total return based on a $10,000 investment December 20, 2022, through September 30, 2024 |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURN 1 Year Since Inception Janus Henderson U.S. Dividend Income Fund (Class N Shares/JNDVX) 23.95 % 12.72 % Russell 1000 ® 35.68 % 27.56 % Russell 1000 ® 27.76 % 16.82 % |
| No Deduction of Taxes [Text Block] | The graph and table include reinvestment of all dividends and distributions and do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemptions of Fund shares. |
| Updated Performance Information Location [Text Block] | Visit janushenderson.com/info |
| Net Assets | $ 22,000,000 |
| Holdings Count | Holding | 52 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 81% |
| Additional Fund Statistics [Text Block] | Key Fund Statistics Net assets $ Number of portfolio holdings 52 Total investment advisory fee paid $ Portfolio turnover rate 81 % |
| Holdings [Text Block] | What did the Fund invest in? 5 Largest Equity Holdings (% of net assets) International Business Machines Corp 4.7 JPMorgan Chase & Co 4.4 CME Group Inc 3.4 UnitedHealth Group Inc 3.2 AbbVie Inc 3.1 Asset Allocation (% of net assets) Common Stocks 99.9 Investment Companies 0.2 Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) International Business Machines Corp 4.7 JPMorgan Chase & Co 4.4 CME Group Inc 3.4 UnitedHealth Group Inc 3.2 AbbVie Inc 3.1 |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | 21 Months Ended | 51 Months Ended | 60 Months Ended | 120 Months Ended | |||||||||||||||||||||
| Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Dec. 20, 2022 | Sep. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2020 | Jun. 25, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014 | ||
| C000077650 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class A Shares/JDBAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 18.70% | 7.90% | 8.09% | |||||||||||||||||||||||
| C000077650 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class A Shares/JDBAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 23,109 | $ 23,109 | $ 23,109 | $ 23,109 | $ 23,109 | $ 18,346 | $ 16,526 | $ 19,473 | $ 16,716 | $ 14,890 | $ 13,826 | $ 12,148 | $ 10,523 | $ 9,941 | $ 10,000 | |||||||||||
| Average Annual Return, Percent | 25.96% | 9.19% | 8.74% | |||||||||||||||||||||||
| C000077651 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class C Shares/JABCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 24.03% | [1] | 8.41% | 7.98% | ||||||||||||||||||||||
| C000077651 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class C Shares/JABCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 21,550 | 21,550 | 21,550 | $ 21,550 | $ 21,550 | 17,236 | 15,638 | 18,556 | 16,042 | 14,393 | 13,455 | 11,900 | 10,378 | 9,875 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.03% | 8.41% | 7.98% | |||||||||||||||||||||||
| C000083512 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class D Shares/JANBX) | |||||||||||||||||||||||||
| Account Value | $ 23,585 | 23,585 | 23,585 | $ 23,585 | $ 23,585 | 18,692 | 16,804 | 19,763 | 16,934 | 15,056 | 13,947 | 12,224 | 10,567 | 9,962 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.17% | 9.39% | 8.96% | |||||||||||||||||||||||
| C000077652 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class I Shares/JBALX) | |||||||||||||||||||||||||
| Account Value | $ 23,720 | 23,720 | 23,720 | $ 23,720 | $ 23,720 | 18,791 | 16,887 | 19,851 | 17,001 | 15,107 | 13,985 | 12,248 | 10,578 | 9,970 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.23% | 9.44% | 9.02% | |||||||||||||||||||||||
| C000114869 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class N Shares/JABNX) | |||||||||||||||||||||||||
| Account Value | $ 23,908 | 23,908 | 23,908 | $ 23,908 | $ 23,908 | 18,927 | 16,991 | 19,959 | 17,078 | 15,165 | 14,032 | 12,281 | 10,601 | 9,980 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.32% | 9.53% | 9.11% | |||||||||||||||||||||||
| C000077653 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class R Shares/JDBRX) | |||||||||||||||||||||||||
| Account Value | $ 22,193 | 22,193 | 22,193 | $ 22,193 | $ 22,193 | 17,694 | 16,008 | 18,944 | 16,333 | 14,609 | 13,616 | 12,010 | 10,441 | 9,906 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.43% | 8.72% | 8.30% | |||||||||||||||||||||||
| C000077654 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class S Shares/JABRX) | |||||||||||||||||||||||||
| Account Value | $ 22,752 | 22,752 | 22,752 | $ 22,752 | $ 22,752 | 18,096 | 16,330 | 19,273 | 16,578 | 14,791 | 13,751 | 12,097 | 10,492 | 9,929 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.73% | 8.99% | 8.57% | |||||||||||||||||||||||
| C000028918 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Balanced Fund (Class T Shares/JABAX) | |||||||||||||||||||||||||
| Account Value | $ 23,338 | 23,338 | 23,338 | $ 23,338 | $ 23,338 | 18,515 | 16,664 | 19,621 | 16,830 | 14,980 | 13,889 | 12,190 | 10,543 | 9,954 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.05% | 9.27% | 8.84% | |||||||||||||||||||||||
| C000077655 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class A Shares/JATAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 40.28% | 18.36% | 18.46% | |||||||||||||||||||||||
| C000077655 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class A Shares/JATAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 57,725 | 57,725 | 57,725 | $ 57,725 | $ 57,725 | 38,786 | 28,071 | 44,919 | 35,047 | 23,422 | 21,746 | 16,775 | 12,724 | 10,163 | 10,000 | |||||||||||
| Average Annual Return, Percent | 48.83% | 19.77% | 19.16% | |||||||||||||||||||||||
| C000077656 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class C Shares/JAGCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 46.72% | [2] | 18.96% | 18.35% | ||||||||||||||||||||||
| C000077656 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class C Shares/JAGCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 53,928 | 53,928 | 53,928 | $ 53,928 | $ 53,928 | 36,507 | 26,602 | 42,831 | 33,633 | 22,640 | 21,164 | 16,440 | 12,559 | 10,097 | 10,000 | |||||||||||
| Average Annual Return, Percent | 47.72% | 18.96% | 18.35% | |||||||||||||||||||||||
| C000083513 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class D Shares/JNGTX) | |||||||||||||||||||||||||
| Account Value | $ 58,841 | 58,841 | 58,841 | $ 58,841 | $ 58,841 | 39,467 | 28,508 | 45,529 | 35,452 | 23,650 | 21,915 | 16,879 | 12,776 | 10,187 | 10,000 | |||||||||||
| Average Annual Return, Percent | 49.09% | 20% | 19.39% | |||||||||||||||||||||||
| C000077657 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class I Shares/JATIX) | |||||||||||||||||||||||||
| Account Value | $ 59,204 | 59,204 | 59,204 | $ 59,204 | $ 59,204 | 39,696 | 28,662 | 45,750 | 35,615 | 23,745 | 21,992 | 16,921 | 12,798 | 10,192 | 10,000 | |||||||||||
| Average Annual Return, Percent | 49.15% | 20.05% | 19.46% | |||||||||||||||||||||||
| C000177052 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class N Shares/JATNX) | |||||||||||||||||||||||||
| Account Value | $ 59,407 | 59,407 | 59,407 | $ 59,407 | $ 59,407 | 39,796 | 28,706 | 45,792 | 35,610 | 23,725 | 21,954 | 16,883 | 12,771 | 10,187 | 10,000 | |||||||||||
| Average Annual Return, Percent | 49.28% | 20.15% | 19.50% | |||||||||||||||||||||||
| C000077658 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class S Shares/JATSX) | |||||||||||||||||||||||||
| Account Value | $ 56,790 | 56,790 | 56,790 | $ 56,790 | $ 56,790 | 38,232 | 27,720 | 44,435 | 34,734 | 23,257 | 21,637 | 16,726 | 12,705 | 10,159 | 10,000 | |||||||||||
| Average Annual Return, Percent | 48.54% | 19.55% | 18.97% | |||||||||||||||||||||||
| C000028919 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Technology and Innovation Fund (Class T Shares/JAGTX) | |||||||||||||||||||||||||
| Account Value | $ 58,338 | 58,338 | 58,338 | $ 58,338 | $ 58,338 | 39,168 | 28,321 | 45,281 | 35,303 | 23,571 | 21,862 | 16,855 | 12,771 | 10,187 | 10,000 | |||||||||||
| Average Annual Return, Percent | 48.94% | 19.87% | 19.29% | |||||||||||||||||||||||
| C000077659 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class A Shares/JDNAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 19.60% | 10.52% | 10.95% | |||||||||||||||||||||||
| C000077659 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class A Shares/JDNAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 29,983 | 29,983 | 29,983 | $ 29,983 | $ 29,983 | 23,628 | 19,919 | 23,265 | 18,136 | 17,139 | 16,089 | 13,579 | 11,173 | 9,721 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.90% | 11.83% | 11.61% | |||||||||||||||||||||||
| C000077660 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class C Shares/JGICX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 25.08% | [3] | 11.13% | 10.84% | ||||||||||||||||||||||
| C000077660 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class C Shares/JGICX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 27,997 | 27,997 | 27,997 | $ 27,997 | $ 27,997 | 22,206 | 18,833 | 22,138 | 17,366 | 16,521 | 15,622 | 13,285 | 11,009 | 9,648 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.08% | 11.13% | 10.84% | |||||||||||||||||||||||
| C000083515 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class D Shares/JNGIX) | |||||||||||||||||||||||||
| Account Value | $ 30,619 | 30,619 | 30,619 | $ 30,619 | $ 30,619 | 24,071 | 20,238 | 23,578 | 18,330 | 17,281 | 16,193 | 13,643 | 11,207 | 9,734 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.20% | 12.12% | 11.84% | |||||||||||||||||||||||
| C000077661 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class I Shares/JGINX) | |||||||||||||||||||||||||
| Account Value | $ 30,797 | 30,797 | 30,797 | $ 30,797 | $ 30,797 | 24,199 | 20,334 | 23,677 | 18,400 | 17,341 | 16,236 | 13,672 | 11,222 | 9,740 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.27% | 12.17% | 11.91% | |||||||||||||||||||||||
| C000114870 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class N Shares/JDNNX) | |||||||||||||||||||||||||
| Account Value | $ 30,825 | 30,825 | 30,825 | $ 30,825 | $ 30,825 | 24,202 | 20,321 | 23,646 | 18,358 | 17,286 | 16,179 | 13,615 | 11,187 | 9,726 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.37% | 12.26% | 11.92% | |||||||||||||||||||||||
| C000077662 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class R Shares/JDNRX) | |||||||||||||||||||||||||
| Account Value | $ 28,737 | 28,737 | 28,737 | $ 28,737 | $ 28,737 | 22,736 | 19,243 | 22,566 | 17,655 | 16,754 | 15,800 | 13,399 | 11,073 | 9,676 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.40% | 11.40% | 11.13% | |||||||||||||||||||||||
| C000077663 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class S Shares/JADGX) | |||||||||||||||||||||||||
| Account Value | $ 29,541 | 29,541 | 29,541 | $ 29,541 | $ 29,541 | 23,307 | 19,670 | 23,000 | 17,948 | 16,985 | 15,973 | 13,505 | 11,131 | 9,703 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.75% | 11.71% | 11.44% | |||||||||||||||||||||||
| C000028923 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Growth and Income Fund (Class T Shares/JAGIX) | |||||||||||||||||||||||||
| Account Value | $ 30,324 | 30,324 | 30,324 | $ 30,324 | $ 30,324 | 23,862 | 20,085 | 23,421 | 18,228 | 17,204 | 16,136 | 13,610 | 11,187 | 9,726 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.08% | 12% | 11.73% | |||||||||||||||||||||||
| C000077669 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class A Shares/JRAAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 37.13% | 16.09% | 13.62% | |||||||||||||||||||||||
| C000077669 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class A Shares/JRAAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 38,040 | 38,040 | 38,040 | $ 38,040 | $ 38,040 | 26,144 | 19,814 | 27,557 | 22,470 | 17,005 | 16,513 | 13,364 | 11,452 | 10,483 | 10,000 | |||||||||||
| Average Annual Return, Percent | 45.50% | 17.47% | 14.29% | |||||||||||||||||||||||
| C000077670 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class C Shares/JRACX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 43.73% | [4] | 16.65% | 13.50% | ||||||||||||||||||||||
| C000077670 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class C Shares/JRACX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 35,482 | 35,482 | 35,482 | $ 35,482 | $ 35,482 | 24,516 | 18,745 | 26,247 | 21,551 | 16,426 | 16,060 | 13,086 | 11,292 | 10,408 | 10,000 | |||||||||||
| Average Annual Return, Percent | 44.73% | 16.65% | 13.50% | |||||||||||||||||||||||
| C000083517 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class D Shares/JNRFX) | |||||||||||||||||||||||||
| Account Value | $ 38,789 | 38,789 | 38,789 | $ 38,789 | $ 38,789 | 26,608 | 20,130 | 27,934 | 22,734 | 17,174 | 16,642 | 13,438 | 11,495 | 10,500 | 10,000 | |||||||||||
| Average Annual Return, Percent | 45.78% | 17.70% | 14.52% | |||||||||||||||||||||||
| C000077671 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class I Shares/JRAIX) | |||||||||||||||||||||||||
| Account Value | $ 39,025 | 39,025 | 39,025 | $ 39,025 | $ 39,025 | 26,761 | 20,237 | 28,069 | 22,833 | 17,237 | 16,697 | 13,471 | 11,516 | 10,509 | 10,000 | |||||||||||
| Average Annual Return, Percent | 45.83% | 17.75% | 14.59% | |||||||||||||||||||||||
| C000114872 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class N Shares/JRANX) | |||||||||||||||||||||||||
| Account Value | $ 39,332 | 39,332 | 39,332 | $ 39,332 | $ 39,332 | 26,948 | 20,362 | 28,223 | 22,939 | 17,304 | 16,746 | 13,505 | 11,532 | 10,521 | 10,000 | |||||||||||
| Average Annual Return, Percent | 45.95% | 17.85% | 14.68% | |||||||||||||||||||||||
| C000177053 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class R Shares/JRARX) | |||||||||||||||||||||||||
| Account Value | $ 36,769 | 36,769 | 36,769 | $ 36,769 | $ 36,769 | 25,381 | 19,322 | 26,987 | 22,105 | 16,812 | 16,393 | 13,321 | 11,407 | 10,450 | 10,000 | |||||||||||
| Average Annual Return, Percent | 44.87% | 16.94% | 13.91% | |||||||||||||||||||||||
| C000077672 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class S Shares/JRASX) | |||||||||||||||||||||||||
| Account Value | $ 37,403 | 37,403 | 37,403 | $ 37,403 | $ 37,403 | 25,758 | 19,561 | 27,254 | 22,265 | 16,882 | 16,418 | 13,307 | 11,419 | 10,468 | 10,000 | |||||||||||
| Average Annual Return, Percent | 45.21% | 17.25% | 14.10% | |||||||||||||||||||||||
| C000028926 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Research Fund (Class T Shares/JAMRX) | |||||||||||||||||||||||||
| Account Value | $ 38,427 | 38,427 | 38,427 | $ 38,427 | $ 38,427 | 26,386 | 19,982 | 27,762 | 22,618 | 17,100 | 16,590 | 13,408 | 11,478 | 10,494 | 10,000 | |||||||||||
| Average Annual Return, Percent | 45.64% | 17.58% | 14.41% | |||||||||||||||||||||||
| C000077678 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class A Shares/JORAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 25.37% | 12.02% | 9.17% | |||||||||||||||||||||||
| C000077678 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class A Shares/JORAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 25,504 | 25,504 | 25,504 | $ 25,504 | $ 25,504 | 19,177 | 15,946 | 19,553 | 14,705 | 13,621 | 13,720 | 12,474 | 9,920 | 9,397 | 10,000 | |||||||||||
| Average Annual Return, Percent | 32.99% | 13.37% | 9.81% | |||||||||||||||||||||||
| C000077679 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class C Shares/JORCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 30.98% | [5] | 12.41% | 8.91% | ||||||||||||||||||||||
| C000077679 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class C Shares/JORCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 23,487 | 23,487 | 23,487 | $ 23,487 | $ 23,487 | 17,796 | 14,925 | 18,457 | 14,000 | 13,084 | 13,291 | 12,176 | 9,760 | 9,318 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.98% | 12.41% | 8.91% | |||||||||||||||||||||||
| C000083520 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class D Shares/JANRX) | |||||||||||||||||||||||||
| Account Value | $ 25,997 | 25,997 | 25,997 | $ 25,997 | $ 25,997 | 19,513 | 16,196 | 19,812 | 14,866 | 13,741 | 13,811 | 12,531 | 9,952 | 9,410 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.23% | 13.60% | 10.03% | |||||||||||||||||||||||
| C000077680 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class I Shares/JORFX) | |||||||||||||||||||||||||
| Account Value | $ 26,188 | 26,188 | 26,188 | $ 26,188 | $ 26,188 | 19,660 | 16,309 | 19,945 | 14,961 | 13,821 | 13,876 | 12,590 | 9,982 | 9,421 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.20% | 13.63% | 10.11% | |||||||||||||||||||||||
| C000114874 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class N Shares/JSLNX) | |||||||||||||||||||||||||
| Account Value | $ 26,250 | 26,250 | 26,250 | $ 26,250 | $ 26,250 | 19,679 | 16,308 | 19,924 | 14,934 | 13,779 | 13,818 | 12,523 | 9,941 | 9,405 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.39% | 13.76% | 10.13% | |||||||||||||||||||||||
| C000077681 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class R Shares/JORRX) | |||||||||||||||||||||||||
| Account Value | $ 24,214 | 24,214 | 24,214 | $ 24,214 | $ 24,214 | 18,313 | 15,310 | 18,875 | 14,280 | 13,309 | 13,472 | 12,323 | 9,839 | 9,350 | 10,000 | |||||||||||
| Average Annual Return, Percent | 32.22% | 12.72% | 9.25% | |||||||||||||||||||||||
| C000077682 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class S Shares/JORIX) | |||||||||||||||||||||||||
| Account Value | $ 24,869 | 24,869 | 24,869 | $ 24,869 | $ 24,869 | 18,760 | 15,639 | 19,247 | 14,518 | 13,491 | 13,624 | 12,420 | 9,895 | 9,377 | 10,000 | |||||||||||
| Average Annual Return, Percent | 32.56% | 13.01% | 9.54% | |||||||||||||||||||||||
| C000028933 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Select Fund (Class T Shares/JORNX) | |||||||||||||||||||||||||
| Account Value | $ 25,823 | 25,823 | 25,823 | $ 25,823 | $ 25,823 | 19,407 | 16,111 | 19,733 | 14,820 | 13,713 | 13,787 | 12,515 | 9,941 | 9,405 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.06% | 13.49% | 9.95% | |||||||||||||||||||||||
| C000077683 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class A Shares/JCNAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 25.72% | 12.48% | 8.85% | |||||||||||||||||||||||
| C000077683 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class A Shares/JCNAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 24,775 | 24,775 | 24,775 | $ 24,775 | $ 24,775 | 18,572 | 15,625 | 21,336 | 15,044 | 12,969 | 11,924 | 10,191 | 9,171 | 8,924 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.40% | 13.82% | 9.50% | |||||||||||||||||||||||
| C000077684 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class C Shares/JCNCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 31.41% | [6] | 13.03% | 8.73% | ||||||||||||||||||||||
| C000077684 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class C Shares/JCNCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 23,091 | 23,091 | 23,091 | $ 23,091 | $ 23,091 | 17,439 | 14,765 | 20,320 | 14,421 | 12,518 | 11,582 | 9,971 | 9,032 | 8,852 | 10,000 | |||||||||||
| Average Annual Return, Percent | 32.41% | 13.03% | 8.73% | |||||||||||||||||||||||
| C000083521 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class D Shares/JACNX) | |||||||||||||||||||||||||
| Account Value | $ 25,325 | 25,325 | 25,325 | $ 25,325 | $ 25,325 | 18,941 | 15,897 | 21,658 | 15,233 | 13,099 | 12,019 | 10,250 | 9,203 | 8,937 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.71% | 14.09% | 9.74% | |||||||||||||||||||||||
| C000077685 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class I Shares/JCONX) | |||||||||||||||||||||||||
| Account Value | $ 25,449 | 25,449 | 25,449 | $ 25,449 | $ 25,449 | 19,031 | 15,968 | 21,746 | 15,294 | 13,143 | 12,052 | 10,270 | 9,212 | 8,940 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.73% | 14.13% | 9.79% | |||||||||||||||||||||||
| C000114875 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class N Shares/JCNNX) | |||||||||||||||||||||||||
| Account Value | $ 25,526 | 25,526 | 25,526 | $ 25,526 | $ 25,526 | 19,062 | 15,978 | 21,738 | 15,278 | 13,114 | 12,014 | 10,236 | 9,188 | 8,932 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.91% | 14.25% | 9.82% | |||||||||||||||||||||||
| C000077686 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class R Shares/JCNRX) | |||||||||||||||||||||||||
| Account Value | $ 23,634 | 23,634 | 23,634 | $ 23,634 | $ 23,634 | 17,800 | 15,048 | 20,645 | 14,637 | 12,682 | 11,720 | 10,075 | 9,097 | 8,887 | 10,000 | |||||||||||
| Average Annual Return, Percent | 32.78% | 13.26% | 8.98% | |||||||||||||||||||||||
| C000077687 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class S Shares/JCNIX) | |||||||||||||||||||||||||
| Account Value | $ 24,279 | 24,279 | 24,279 | $ 24,279 | $ 24,279 | 18,241 | 15,375 | 21,045 | 14,874 | 12,854 | 11,845 | 10,149 | 9,144 | 8,908 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.10% | 13.56% | 9.28% | |||||||||||||||||||||||
| C000028934 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Contrarian Fund (Class T Shares/JSVAX) | |||||||||||||||||||||||||
| Account Value | $ 25,103 | 25,103 | 25,103 | $ 25,103 | $ 25,103 | 18,793 | 15,787 | 21,533 | 15,166 | 13,050 | 11,981 | 10,231 | 9,188 | 8,932 | 10,000 | |||||||||||
| Average Annual Return, Percent | 33.57% | 13.98% | 9.64% | |||||||||||||||||||||||
| C000077688 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class A Shares/JDIAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 14.38% | 9.63% | 4.14% | |||||||||||||||||||||||
| C000077688 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class A Shares/JDIAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 15,919 | 15,919 | 15,919 | $ 15,919 | $ 15,919 | 13,118 | 10,769 | 13,755 | 10,300 | 9,472 | 9,840 | 9,630 | 7,932 | 7,742 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.36% | 10.94% | 4.76% | |||||||||||||||||||||||
| C000077689 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class C Shares/JIGCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 19.58% | [7] | 10.07% | 3.96% | ||||||||||||||||||||||
| C000077689 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class C Shares/JIGCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 14,743 | 14,743 | 14,743 | $ 14,743 | $ 14,743 | 12,227 | 10,106 | 13,022 | 9,835 | 9,124 | 9,551 | 9,417 | 7,813 | 7,685 | 10,000 | |||||||||||
| Average Annual Return, Percent | 20.58% | 10.07% | 3.96% | |||||||||||||||||||||||
| C000083522 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class D Shares/JNOSX) | |||||||||||||||||||||||||
| Account Value | $ 16,384 | 16,384 | 16,384 | $ 16,384 | $ 16,384 | 13,468 | 11,024 | 14,043 | 10,489 | 9,618 | 9,962 | 9,717 | 7,978 | 7,766 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.65% | 11.24% | 5.06% | |||||||||||||||||||||||
| C000077690 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class I Shares/JIGFX) | |||||||||||||||||||||||||
| Account Value | $ 16,446 | 16,446 | 16,446 | $ 16,446 | $ 16,446 | 13,512 | 11,059 | 14,081 | 10,512 | 9,635 | 9,974 | 9,727 | 7,989 | 7,771 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.71% | 11.29% | 5.10% | |||||||||||||||||||||||
| C000114876 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class N Shares/JDINX) | |||||||||||||||||||||||||
| Account Value | $ 16,617 | 16,617 | 16,617 | $ 16,617 | $ 16,617 | 13,639 | 11,152 | 14,182 | 10,579 | 9,688 | 10,015 | 9,757 | 8,004 | 7,778 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.83% | 11.40% | 5.21% | |||||||||||||||||||||||
| C000077691 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class R Shares/JDIRX) | |||||||||||||||||||||||||
| Account Value | $ 15,434 | 15,434 | 15,434 | $ 15,434 | $ 15,434 | 12,762 | 10,513 | 13,474 | 10,121 | 9,340 | 9,729 | 9,550 | 7,887 | 7,721 | 10,000 | |||||||||||
| Average Annual Return, Percent | 20.93% | 10.57% | 4.44% | |||||||||||||||||||||||
| C000077692 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class S Shares/JIGRX) | |||||||||||||||||||||||||
| Account Value | $ 15,834 | 15,834 | 15,834 | $ 15,834 | $ 15,834 | 13,061 | 10,730 | 13,716 | 10,279 | 9,462 | 9,830 | 9,622 | 7,929 | 7,740 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.23% | 10.85% | 4.70% | |||||||||||||||||||||||
| C000028935 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Overseas Fund (Class T Shares/JAOSX) | |||||||||||||||||||||||||
| Account Value | $ 16,247 | 16,247 | 16,247 | $ 16,247 | $ 16,247 | 13,368 | 10,955 | 13,966 | 10,439 | 9,583 | 9,932 | 9,700 | 7,970 | 7,762 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.54% | 11.14% | 4.97% | |||||||||||||||||||||||
| C000077722 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class A Shares/JGMAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 15.99% | 5.69% | 8.89% | |||||||||||||||||||||||
| C000077722 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class A Shares/JGMAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 24,873 | 24,873 | 24,873 | $ 24,873 | $ 24,873 | 20,212 | 18,205 | 24,814 | 18,600 | 17,776 | 18,268 | 14,701 | 12,144 | 10,483 | 10,000 | |||||||||||
| Average Annual Return, Percent | 23.06% | 6.95% | 9.54% | |||||||||||||||||||||||
| C000077723 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class C Shares/JGMCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 21.39% | [8] | 6.39% | 8.92% | ||||||||||||||||||||||
| C000077723 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class C Shares/JGMCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 23,494 | 23,494 | 23,494 | $ 23,494 | $ 23,494 | 19,196 | 17,376 | 23,800 | 17,933 | 17,241 | 17,821 | 14,429 | 11,990 | 10,416 | 10,000 | |||||||||||
| Average Annual Return, Percent | 22.39% | 6.39% | 8.92% | |||||||||||||||||||||||
| C000083530 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class D Shares/JANIX) | |||||||||||||||||||||||||
| Account Value | $ 25,686 | 25,686 | 25,686 | $ 25,686 | $ 25,686 | 20,809 | 18,681 | 25,378 | 18,961 | 18,062 | 18,508 | 14,846 | 12,221 | 10,519 | 10,000 | |||||||||||
| Average Annual Return, Percent | 23.44% | 7.30% | 9.89% | |||||||||||||||||||||||
| C000077724 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class I Shares/JSMGX) | |||||||||||||||||||||||||
| Account Value | $ 25,776 | 25,776 | 25,776 | $ 25,776 | $ 25,776 | 20,875 | 18,734 | 25,446 | 19,004 | 18,098 | 18,536 | 14,860 | 12,229 | 10,520 | 10,000 | |||||||||||
| Average Annual Return, Percent | 23.48% | 7.33% | 9.93% | |||||||||||||||||||||||
| C000114880 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class N Shares/JGMNX) | |||||||||||||||||||||||||
| Account Value | $ 26,040 | 26,040 | 26,040 | $ 26,040 | $ 26,040 | 21,071 | 18,886 | 25,632 | 19,123 | 18,193 | 18,614 | 14,909 | 12,258 | 10,531 | 10,000 | |||||||||||
| Average Annual Return, Percent | 23.59% | 7.44% | 10.04% | |||||||||||||||||||||||
| C000077725 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class R Shares/JGMRX) | |||||||||||||||||||||||||
| Account Value | $ 24,163 | 24,163 | 24,163 | $ 24,163 | $ 24,163 | 19,696 | 17,788 | 24,322 | 18,279 | 17,525 | 18,062 | 14,577 | 12,073 | 10,452 | 10,000 | |||||||||||
| Average Annual Return, Percent | 22.68% | 6.64% | 9.22% | |||||||||||||||||||||||
| C000077726 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class S Shares/JGMIX) | |||||||||||||||||||||||||
| Account Value | $ 24,765 | 24,765 | 24,765 | $ 24,765 | $ 24,765 | 20,139 | 18,149 | 24,745 | 18,553 | 17,740 | 18,242 | 14,688 | 12,133 | 10,476 | 10,000 | |||||||||||
| Average Annual Return, Percent | 22.97% | 6.90% | 9.49% | |||||||||||||||||||||||
| C000028947 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Triton Fund (Class T Shares/JATTX) | |||||||||||||||||||||||||
| Account Value | $ 25,414 | 25,414 | 25,414 | $ 25,414 | $ 25,414 | 20,604 | 18,517 | 25,192 | 18,845 | 17,967 | 18,432 | 14,802 | 12,198 | 10,508 | 10,000 | |||||||||||
| Average Annual Return, Percent | 23.34% | 7.18% | 9.78% | |||||||||||||||||||||||
| C000100475 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class A Shares/JVTAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 20.08% | 7.47% | 9.06% | |||||||||||||||||||||||
| C000100475 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class A Shares/JVTAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 25,248 | 25,248 | 25,248 | $ 25,248 | $ 25,248 | 19,815 | 18,037 | 25,258 | 18,466 | 16,597 | 17,303 | 14,202 | 12,043 | 10,550 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.42% | 8.75% | 9.70% | |||||||||||||||||||||||
| C000100476 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class C Shares/JVTCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 25.68% | [9] | 7.94% | 8.90% | ||||||||||||||||||||||
| C000100476 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class C Shares/JVTCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 23,453 | 23,453 | 23,453 | $ 23,453 | $ 23,453 | 18,514 | 17,018 | 24,006 | 17,686 | 16,007 | 16,805 | 13,895 | 11,869 | 10,475 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.68% | 7.94% | 8.90% | |||||||||||||||||||||||
| C000083533 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class D Shares/JANVX) | |||||||||||||||||||||||||
| Account Value | $ 25,804 | 25,804 | 25,804 | $ 25,804 | $ 25,804 | 20,208 | 18,353 | 25,643 | 18,708 | 16,776 | 17,452 | 14,294 | 12,094 | 10,570 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.69% | 8.99% | 9.94% | |||||||||||||||||||||||
| C000100477 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class I Shares/JVTIX) | |||||||||||||||||||||||||
| Account Value | $ 25,915 | 25,915 | 25,915 | $ 25,915 | $ 25,915 | 20,290 | 18,423 | 25,731 | 18,764 | 16,822 | 17,490 | 14,317 | 12,108 | 10,578 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.73% | 9.03% | 9.99% | |||||||||||||||||||||||
| C000114881 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class N Shares/JVTNX) | |||||||||||||||||||||||||
| Account Value | $ 26,147 | 26,147 | 26,147 | $ 26,147 | $ 26,147 | 20,451 | 18,551 | 25,888 | 18,863 | 16,894 | 17,550 | 14,354 | 12,128 | 10,587 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.85% | 9.13% | 10.09% | |||||||||||||||||||||||
| C000100478 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class S Shares/JVTSX) | |||||||||||||||||||||||||
| Account Value | $ 24,871 | 24,871 | 24,871 | $ 24,871 | $ 24,871 | 19,551 | 17,825 | 25,000 | 18,309 | 16,480 | 17,204 | 14,143 | 12,009 | 10,534 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.21% | 8.58% | 9.54% | |||||||||||||||||||||||
| C000028950 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Venture Fund (Class T Shares/JAVTX) | |||||||||||||||||||||||||
| Account Value | $ 25,531 | 25,531 | 25,531 | $ 25,531 | $ 25,531 | 20,016 | 18,199 | 25,456 | 18,593 | 16,692 | 17,380 | 14,252 | 12,069 | 10,561 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.56% | 8.87% | 9.83% | |||||||||||||||||||||||
| C000077732 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class A Shares/JDWAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 29.02% | 12.45% | 9.75% | |||||||||||||||||||||||
| C000077732 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class A Shares/JDWAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 26,900 | 26,900 | 26,900 | $ 26,900 | $ 26,900 | 19,649 | 15,728 | 20,586 | 16,174 | 14,099 | 13,900 | 12,311 | 10,332 | 9,653 | 10,000 | |||||||||||
| Average Annual Return, Percent | 36.90% | 13.79% | 10.40% | |||||||||||||||||||||||
| C000077733 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class C Shares/JWWCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 34.79% | [10] | 12.99% | 9.64% | ||||||||||||||||||||||
| C000077733 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class C Shares/JWWCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 25,093 | 25,093 | 25,093 | $ 25,093 | $ 25,093 | 18,479 | 14,904 | 19,636 | 15,531 | 13,625 | 13,522 | 12,053 | 10,178 | 9,577 | 10,000 | |||||||||||
| Average Annual Return, Percent | 35.79% | 12.99% | 9.64% | |||||||||||||||||||||||
| C000083534 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class D Shares/JANWX) | |||||||||||||||||||||||||
| Account Value | $ 27,630 | 27,630 | 27,630 | $ 27,630 | $ 27,630 | 20,141 | 16,085 | 20,992 | 16,441 | 14,288 | 14,043 | 12,398 | 10,372 | 9,668 | 10,000 | |||||||||||
| Average Annual Return, Percent | 37.18% | 14.10% | 10.70% | |||||||||||||||||||||||
| C000077734 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class I Shares/JWWFX) | |||||||||||||||||||||||||
| Account Value | $ 27,857 | 27,857 | 27,857 | $ 27,857 | $ 27,857 | 20,297 | 16,197 | 21,124 | 16,532 | 14,356 | 14,096 | 12,435 | 10,394 | 9,678 | 10,000 | |||||||||||
| Average Annual Return, Percent | 37.25% | 14.18% | 10.79% | |||||||||||||||||||||||
| C000114882 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class N Shares/JDWNX) | |||||||||||||||||||||||||
| Account Value | $ 27,845 | 27,845 | 27,845 | $ 27,845 | $ 27,845 | 20,272 | 16,168 | 21,075 | 16,484 | 14,305 | 14,037 | 12,377 | 10,359 | 9,661 | 10,000 | |||||||||||
| Average Annual Return, Percent | 37.36% | 14.25% | 10.78% | |||||||||||||||||||||||
| C000077735 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class R Shares/JDWRX) | |||||||||||||||||||||||||
| Account Value | $ 25,962 | 25,962 | 25,962 | $ 25,962 | $ 25,962 | 19,051 | 15,310 | 20,112 | 15,853 | 13,866 | 13,715 | 12,185 | 10,253 | 9,612 | 10,000 | |||||||||||
| Average Annual Return, Percent | 36.28% | 13.37% | 10.01% | |||||||||||||||||||||||
| C000077736 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class S Shares/JWGRX) | |||||||||||||||||||||||||
| Account Value | $ 26,674 | 26,674 | 26,674 | $ 26,674 | $ 26,674 | 19,520 | 15,646 | 20,496 | 16,109 | 14,050 | 13,855 | 12,276 | 10,304 | 9,636 | 10,000 | |||||||||||
| Average Annual Return, Percent | 36.65% | 13.68% | 10.31% | |||||||||||||||||||||||
| C000028951 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Research Fund (Class T Shares/JAWWX) | |||||||||||||||||||||||||
| Account Value | $ 27,391 | 27,391 | 27,391 | $ 27,391 | $ 27,391 | 19,988 | 15,978 | 20,872 | 16,363 | 14,234 | 14,000 | 12,372 | 10,359 | 9,661 | 10,000 | |||||||||||
| Average Annual Return, Percent | 37.04% | 13.99% | 10.60% | |||||||||||||||||||||||
| C000077737 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class A Shares/JDMAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 18.51% | 9.65% | 12.03% | |||||||||||||||||||||||
| C000077737 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class A Shares/JDMAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 33,026 | 33,026 | 33,026 | $ 33,026 | $ 33,026 | 26,265 | 22,292 | 27,544 | 20,781 | 19,640 | 17,875 | 14,816 | 12,358 | 10,588 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.74% | 10.95% | 12.69% | |||||||||||||||||||||||
| C000077738 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class C Shares/JGRCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 24.12% | [11] | 10.37% | 12.05% | ||||||||||||||||||||||
| C000077738 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class C Shares/JGRCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 31,191 | 31,191 | 31,191 | $ 31,191 | $ 31,191 | 24,930 | 21,272 | 26,411 | 20,038 | 19,047 | 17,435 | 14,537 | 12,197 | 10,519 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.12% | 10.37% | 12.05% | |||||||||||||||||||||||
| C000083535 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class D Shares/JANEX) | |||||||||||||||||||||||||
| Account Value | $ 34,071 | 34,071 | 34,071 | $ 34,071 | $ 34,071 | 27,008 | 22,851 | 28,142 | 21,165 | 19,938 | 18,090 | 14,951 | 12,431 | 10,619 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.15% | 11.31% | 13.04% | |||||||||||||||||||||||
| C000077739 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class I Shares/JMGRX) | |||||||||||||||||||||||||
| Account Value | $ 34,243 | 34,243 | 34,243 | $ 34,243 | $ 34,243 | 27,138 | 22,953 | 28,256 | 21,241 | 20,001 | 18,137 | 14,980 | 12,450 | 10,628 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.18% | 11.35% | 13.10% | |||||||||||||||||||||||
| C000114883 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class N Shares/JDMNX) | |||||||||||||||||||||||||
| Account Value | $ 34,569 | 34,569 | 34,569 | $ 34,569 | $ 34,569 | 27,368 | 23,124 | 28,442 | 21,362 | 20,097 | 18,206 | 15,025 | 12,474 | 10,639 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.32% | 11.46% | 13.21% | |||||||||||||||||||||||
| C000077740 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class R Shares/JDMRX) | |||||||||||||||||||||||||
| Account Value | $ 32,086 | 32,086 | 32,086 | $ 32,086 | $ 32,086 | 25,591 | 21,783 | 26,993 | 20,425 | 19,359 | 17,670 | 14,692 | 12,288 | 10,559 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.38% | 10.63% | 12.37% | |||||||||||||||||||||||
| C000077741 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class S Shares/JGRTX) | |||||||||||||||||||||||||
| Account Value | $ 32,896 | 32,896 | 32,896 | $ 32,896 | $ 32,896 | 26,173 | 22,223 | 27,471 | 20,735 | 19,603 | 17,848 | 14,803 | 12,351 | 10,586 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.69% | 10.91% | 12.65% | |||||||||||||||||||||||
| C000028952 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Enterprise Fund (Class T Shares/JAENX) | |||||||||||||||||||||||||
| Account Value | $ 33,745 | 33,745 | 33,745 | $ 33,745 | $ 33,745 | 26,778 | 22,680 | 27,962 | 21,053 | 19,854 | 18,030 | 14,916 | 12,413 | 10,613 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.02% | 11.19% | 12.93% | |||||||||||||||||||||||
| C000077752 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class A Shares/JFNAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 19.02% | 12.68% | 10.14% | |||||||||||||||||||||||
| C000077752 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class A Shares/JFNAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 27,878 | 27,878 | 27,878 | $ 27,878 | $ 27,878 | 22,076 | 19,567 | 22,234 | 18,890 | 14,466 | 15,353 | 13,054 | 11,392 | 11,400 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.28% | 14.02% | 10.80% | |||||||||||||||||||||||
| C000077753 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class C Shares/JFNCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 24.34% | [12] | 13.21% | 9.99% | ||||||||||||||||||||||
| C000077753 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class C Shares/JFNCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 25,907 | 25,907 | 25,907 | $ 25,907 | $ 25,907 | 20,670 | 18,457 | 21,113 | 18,064 | 13,934 | 14,895 | 12,762 | 11,219 | 11,316 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.34% | 13.21% | 9.99% | |||||||||||||||||||||||
| C000083538 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class D Shares/JNGLX) | |||||||||||||||||||||||||
| Account Value | $ 28,387 | 28,387 | 28,387 | $ 28,387 | $ 28,387 | 22,437 | 19,855 | 22,520 | 19,100 | 14,600 | 15,472 | 13,132 | 11,438 | 11,424 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.52% | 14.22% | 11% | |||||||||||||||||||||||
| C000077754 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class I Shares/JFNIX) | |||||||||||||||||||||||||
| Account Value | $ 28,514 | 28,514 | 28,514 | $ 28,514 | $ 28,514 | 22,530 | 19,927 | 22,593 | 19,153 | 14,633 | 15,495 | 13,145 | 11,440 | 11,419 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.56% | 14.27% | 11.05% | |||||||||||||||||||||||
| C000198286 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class N Shares/JFNNX) | |||||||||||||||||||||||||
| Account Value | $ 28,556 | 28,556 | 28,556 | $ 28,556 | $ 28,556 | 22,540 | 19,919 | 22,561 | 19,110 | 14,591 | 15,440 | 13,096 | 11,416 | 11,412 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.69% | 14.37% | 11.06% | |||||||||||||||||||||||
| C000077755 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class S Shares/JFNSX) | |||||||||||||||||||||||||
| Account Value | $ 27,399 | 27,399 | 27,399 | $ 27,399 | $ 27,399 | 21,738 | 19,307 | 21,979 | 18,709 | 14,358 | 15,269 | 13,006 | 11,366 | 11,392 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.04% | 13.80% | 10.60% | |||||||||||||||||||||||
| C000028956 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Life Sciences Fund (Class T Shares/JAGLX) | |||||||||||||||||||||||||
| Account Value | $ 28,116 | 28,116 | 28,116 | $ 28,116 | $ 28,116 | 22,247 | 19,704 | 22,370 | 18,994 | 14,536 | 15,416 | 13,096 | 11,416 | 11,412 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.38% | 14.10% | 10.89% | |||||||||||||||||||||||
| C000077597 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class A Shares/JERAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 18.60% | 1.63% | 5% | |||||||||||||||||||||||
| C000077597 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class A Shares/JERAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 17,289 | 17,289 | 17,289 | $ 17,289 | $ 17,289 | 13,735 | 13,588 | 17,924 | 14,653 | 15,033 | 12,836 | 11,911 | 11,013 | 9,873 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.87% | 2.84% | 5.63% | |||||||||||||||||||||||
| C000077598 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class C Shares/JERCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 23.87% | [13] | 2.02% | 4.81% | ||||||||||||||||||||||
| C000077598 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class C Shares/JERCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 15,996 | 15,996 | 15,996 | $ 15,996 | $ 15,996 | 12,810 | 12,764 | 16,976 | 13,990 | 14,473 | 12,457 | 11,641 | 10,844 | 9,797 | 10,000 | |||||||||||
| Average Annual Return, Percent | 24.87% | 2.02% | 4.81% | |||||||||||||||||||||||
| C000083540 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class D Shares/JNGSX) | |||||||||||||||||||||||||
| Account Value | $ 17,587 | 17,587 | 17,587 | $ 17,587 | $ 17,587 | 13,941 | 13,768 | 18,128 | 14,787 | 15,149 | 12,914 | 11,960 | 11,048 | 9,883 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.15% | 3.03% | 5.81% | |||||||||||||||||||||||
| C000077599 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class I Shares/JERIX) | |||||||||||||||||||||||||
| Account Value | $ 17,729 | 17,729 | 17,729 | $ 17,729 | $ 17,729 | 14,052 | 13,855 | 18,241 | 14,883 | 15,235 | 12,977 | 11,992 | 11,064 | 9,894 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.17% | 3.08% | 5.89% | |||||||||||||||||||||||
| C000198287 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class N Shares/JERNX) | |||||||||||||||||||||||||
| Account Value | $ 17,841 | 17,841 | 17,841 | $ 17,841 | $ 17,841 | 14,126 | 13,924 | 18,306 | 14,908 | 15,258 | 12,983 | 11,992 | 11,064 | 9,894 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.30% | 3.18% | 5.96% | |||||||||||||||||||||||
| C000077600 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class S Shares/JERSX) | |||||||||||||||||||||||||
| Account Value | $ 16,980 | 16,980 | 16,980 | $ 16,980 | $ 16,980 | 13,512 | 13,376 | 17,686 | 14,494 | 14,894 | 12,745 | 11,850 | 10,977 | 9,858 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.67% | 2.66% | 5.44% | |||||||||||||||||||||||
| C000077601 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Real Estate Fund (Class T Shares/JERTX) | |||||||||||||||||||||||||
| Account Value | $ 17,481 | 17,481 | 17,481 | $ 17,481 | $ 17,481 | 13,861 | 13,698 | 18,060 | 14,744 | 15,117 | 12,891 | 11,947 | 11,032 | 9,882 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.12% | 2.95% | 5.74% | |||||||||||||||||||||||
| C000077618 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class A Shares/JDCAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 34.22% | 14.99% | 14.98% | |||||||||||||||||||||||
| C000077618 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class A Shares/JDCAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 42,837 | 42,837 | 42,837 | $ 42,837 | $ 42,837 | 30,080 | 23,144 | 35,067 | 27,032 | 20,081 | 18,633 | 15,055 | 12,337 | 11,079 | 10,000 | |||||||||||
| Average Annual Return, Percent | 42.41% | 16.36% | 15.66% | |||||||||||||||||||||||
| C000077619 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class C Shares/JACCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 40.44% | [14] | 15.58% | 14.94% | ||||||||||||||||||||||
| C000077619 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class C Shares/JACCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 40,236 | 40,236 | 40,236 | $ 40,236 | $ 40,236 | 28,447 | 22,039 | 33,612 | 26,079 | 19,510 | 18,214 | 14,802 | 12,208 | 11,026 | 10,000 | |||||||||||
| Average Annual Return, Percent | 41.44% | 15.58% | 14.94% | |||||||||||||||||||||||
| C000177054 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class D Shares/JFRDX) | |||||||||||||||||||||||||
| Account Value | $ 43,512 | 43,512 | 43,512 | $ 43,512 | $ 43,512 | 30,496 | 23,417 | 35,407 | 27,236 | 20,193 | 18,691 | 15,066 | 12,322 | 11,086 | 10,000 | |||||||||||
| Average Annual Return, Percent | 42.68% | 16.60% | 15.84% | |||||||||||||||||||||||
| C000077620 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class I Shares/JCAPX) | |||||||||||||||||||||||||
| Account Value | $ 44,070 | 44,070 | 44,070 | $ 44,070 | $ 44,070 | 30,869 | 23,691 | 35,809 | 27,530 | 20,397 | 18,875 | 15,199 | 12,414 | 11,117 | 10,000 | |||||||||||
| Average Annual Return, Percent | 42.76% | 16.66% | 15.99% | |||||||||||||||||||||||
| C000114888 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class N Shares/JFRNX) | |||||||||||||||||||||||||
| Account Value | $ 44,404 | 44,404 | 44,404 | $ 44,404 | $ 44,404 | 31,081 | 23,838 | 35,997 | 27,659 | 20,479 | 18,936 | 15,238 | 12,440 | 11,134 | 10,000 | |||||||||||
| Average Annual Return, Percent | 42.86% | 16.74% | 16.08% | |||||||||||||||||||||||
| C000077621 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class R Shares/JDCRX) | |||||||||||||||||||||||||
| Account Value | $ 41,224 | 41,224 | 41,224 | $ 41,224 | $ 41,224 | 29,075 | 22,461 | 34,166 | 26,442 | 19,726 | 18,374 | 14,897 | 12,249 | 11,047 | 10,000 | |||||||||||
| Average Annual Return, Percent | 41.79% | 15.88% | 15.22% | |||||||||||||||||||||||
| C000077622 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class S Shares/JARTX) | |||||||||||||||||||||||||
| Account Value | $ 42,315 | 42,315 | 42,315 | $ 42,315 | $ 42,315 | 29,762 | 22,931 | 34,803 | 26,875 | 19,996 | 18,575 | 15,024 | 12,322 | 11,086 | 10,000 | |||||||||||
| Average Annual Return, Percent | 42.18% | 16.18% | 15.52% | |||||||||||||||||||||||
| C000077623 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Forty Fund (Class T Shares/JACTX) | |||||||||||||||||||||||||
| Account Value | $ 43,385 | 43,385 | 43,385 | $ 43,385 | $ 43,385 | 30,441 | 23,394 | 35,416 | 27,271 | 20,244 | 18,756 | 15,130 | 12,380 | 11,110 | 10,000 | |||||||||||
| Average Annual Return, Percent | 42.52% | 16.47% | 15.81% | |||||||||||||||||||||||
| C000183873 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class A Shares/HEMAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 10.30% | 2.22% | 1.30% | |||||||||||||||||||||||
| C000183873 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class A Shares/HEMAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 12,075 | 12,075 | 12,075 | $ 12,075 | $ 12,075 | 10,321 | 9,485 | 13,964 | 11,866 | 10,202 | 10,700 | 11,359 | 9,883 | 8,675 | 10,000 | |||||||||||
| Average Annual Return, Percent | 17% | 3.43% | 1.90% | |||||||||||||||||||||||
| C000183875 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class C Shares/HEMCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 15.17% | [15] | 2.67% | 1.14% | ||||||||||||||||||||||
| C000183875 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class C Shares/HEMCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 11,199 | 11,199 | 11,199 | $ 11,199 | $ 11,199 | 9,640 | 8,926 | 13,238 | 11,347 | 9,819 | 10,388 | 11,109 | 9,744 | 8,611 | 10,000 | |||||||||||
| Average Annual Return, Percent | 16.17% | 2.67% | 1.14% | |||||||||||||||||||||||
| C000183876 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class D Shares/HEMDX) | |||||||||||||||||||||||||
| Account Value | $ 12,231 | 12,231 | 12,231 | $ 12,231 | $ 12,231 | 10,430 | 9,568 | 14,058 | 11,929 | 10,225 | 10,717 | 11,358 | 9,901 | 8,687 | 10,000 | |||||||||||
| Average Annual Return, Percent | 17.27% | 3.65% | 2.03% | |||||||||||||||||||||||
| C000183877 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class I Shares/HEMIX) | |||||||||||||||||||||||||
| Account Value | $ 12,390 | 12,390 | 12,390 | $ 12,390 | $ 12,390 | 10,559 | 9,685 | 14,216 | 12,054 | 10,331 | 10,816 | 11,460 | 9,943 | 8,704 | 10,000 | |||||||||||
| Average Annual Return, Percent | 17.34% | 3.70% | 2.17% | |||||||||||||||||||||||
| C000183878 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class N Shares/HEMRX) | |||||||||||||||||||||||||
| Account Value | $ 12,413 | 12,413 | 12,413 | $ 12,413 | $ 12,413 | 10,579 | 9,694 | 14,219 | 12,050 | 10,321 | 10,800 | 11,433 | 9,917 | 8,688 | 10,000 | |||||||||||
| Average Annual Return, Percent | 17.33% | 3.76% | 2.18% | |||||||||||||||||||||||
| C000183880 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class S Shares/HEMSX) | |||||||||||||||||||||||||
| Account Value | $ 11,904 | 11,904 | 11,904 | $ 11,904 | $ 11,904 | 10,192 | 9,376 | 13,832 | 11,775 | 10,129 | 10,604 | 11,279 | 9,853 | 8,669 | 10,000 | |||||||||||
| Average Annual Return, Percent | 16.80% | 3.28% | 1.76% | |||||||||||||||||||||||
| C000183881 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Emerging Markets Fund (Class T Shares/HEMTX) | |||||||||||||||||||||||||
| Account Value | $ 12,122 | 12,122 | 12,122 | $ 12,122 | $ 12,122 | 10,357 | 9,500 | 13,984 | 11,872 | 10,197 | 10,695 | 11,349 | 9,889 | 8,683 | 10,000 | |||||||||||
| Average Annual Return, Percent | 17.05% | 3.52% | 1.94% | |||||||||||||||||||||||
| C000183893 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class A Shares/HFQAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 14.10% | 6.16% | 4.48% | |||||||||||||||||||||||
| C000183893 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class A Shares/HFQAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 16,448 | 16,448 | 16,448 | $ 16,448 | $ 16,448 | 13,583 | 11,555 | 13,289 | 11,159 | 11,502 | 11,644 | 11,897 | 10,290 | 9,545 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.09% | 7.42% | 5.10% | |||||||||||||||||||||||
| C000183894 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class C Shares/HFQCX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 19.29% | [16] | 6.69% | 4.38% | ||||||||||||||||||||||
| C000183894 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class C Shares/HFQCX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 15,345 | 15,345 | 15,345 | $ 15,345 | $ 15,345 | 12,757 | 10,920 | 12,641 | 10,664 | 11,099 | 11,311 | 11,632 | 10,136 | 9,471 | 10,000 | |||||||||||
| Average Annual Return, Percent | 20.29% | 6.69% | 4.38% | |||||||||||||||||||||||
| C000183895 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class D Shares/HFQDX) | |||||||||||||||||||||||||
| Account Value | $ 16,708 | 16,708 | 16,708 | $ 16,708 | $ 16,708 | 13,754 | 11,667 | 13,392 | 11,213 | 11,550 | 11,674 | 11,902 | 10,290 | 9,545 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.48% | 7.66% | 5.27% | |||||||||||||||||||||||
| C000183896 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class I Shares/HFQIX) | |||||||||||||||||||||||||
| Account Value | $ 16,953 | 16,953 | 16,953 | $ 16,953 | $ 16,953 | 13,965 | 11,827 | 13,560 | 11,353 | 11,678 | 11,783 | 11,984 | 10,339 | 9,568 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.39% | 7.74% | 5.42% | |||||||||||||||||||||||
| C000183897 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class N Shares/HFQRX) | |||||||||||||||||||||||||
| Account Value | $ 17,010 | 17,010 | 17,010 | $ 17,010 | $ 17,010 | 14,001 | 11,847 | 13,571 | 11,355 | 11,671 | 11,768 | 11,963 | 10,315 | 9,545 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.50% | 7.82% | 5.46% | |||||||||||||||||||||||
| C000183899 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class S Shares/HFQSX) | |||||||||||||||||||||||||
| Account Value | $ 16,219 | 16,219 | 16,219 | $ 16,219 | $ 16,219 | 13,417 | 11,421 | 13,155 | 11,054 | 11,431 | 11,582 | 11,838 | 10,259 | 9,531 | 10,000 | |||||||||||
| Average Annual Return, Percent | 20.89% | 7.25% | 4.96% | |||||||||||||||||||||||
| C000183900 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Equity Income Fund (Class T Shares/HFQTX) | |||||||||||||||||||||||||
| Account Value | $ 16,638 | 16,638 | 16,638 | $ 16,638 | $ 16,638 | 13,727 | 11,651 | 13,377 | 11,208 | 11,548 | 11,669 | 11,888 | 10,290 | 9,545 | 10,000 | |||||||||||
| Average Annual Return, Percent | 21.21% | 7.58% | 5.22% | |||||||||||||||||||||||
| C000183903 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class A Shares/HFEAX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 20.22% | 12.83% | 4.89% | |||||||||||||||||||||||
| C000183903 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class A Shares/HFEAX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 17,108 | 17,108 | 17,108 | $ 17,108 | $ 17,108 | 13,413 | 10,689 | 14,600 | 11,204 | 8,820 | 9,866 | 10,705 | 9,515 | 9,661 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.55% | 14.17% | 5.52% | |||||||||||||||||||||||
| C000183904 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class C Shares/HFECX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 25.61% | [17] | 13.31% | 4.71% | ||||||||||||||||||||||
| C000183904 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class C Shares/HFECX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 15,852 | 15,852 | 15,852 | $ 15,852 | $ 15,852 | 12,520 | 10,053 | 13,838 | 10,703 | 8,487 | 9,564 | 10,453 | 9,365 | 9,585 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.61% | 13.31% | 4.71% | |||||||||||||||||||||||
| C000183905 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class D Shares/HFEDX) | |||||||||||||||||||||||||
| Account Value | $ 17,346 | 17,346 | 17,346 | $ 17,346 | $ 17,346 | 13,571 | 10,795 | 14,718 | 11,272 | 8,856 | 9,884 | 10,705 | 9,515 | 9,661 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.82% | 14.39% | 5.66% | |||||||||||||||||||||||
| C000183906 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class I Shares/HFEIX) | |||||||||||||||||||||||||
| Account Value | $ 17,551 | 17,551 | 17,551 | $ 17,551 | $ 17,551 | 13,729 | 10,913 | 14,866 | 11,380 | 8,936 | 9,962 | 10,781 | 9,560 | 9,683 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.85% | 14.46% | 5.79% | |||||||||||||||||||||||
| C000183907 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class N Shares/HFERX) | |||||||||||||||||||||||||
| Account Value | $ 17,578 | 17,578 | 17,578 | $ 17,578 | $ 17,578 | 13,740 | 10,916 | 14,860 | 11,367 | 8,915 | 9,934 | 10,743 | 9,536 | 9,661 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.93% | 14.54% | 5.80% | |||||||||||||||||||||||
| C000183909 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class S Shares/HFESX) | |||||||||||||||||||||||||
| Account Value | $ 17,104 | 17,104 | 17,104 | $ 17,104 | $ 17,104 | 13,424 | 10,701 | 14,586 | 11,166 | 8,793 | 9,818 | 10,661 | 9,489 | 9,649 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.42% | 14.23% | 5.51% | |||||||||||||||||||||||
| C000183910 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson European Focus Fund (Class T Shares/HFETX) | |||||||||||||||||||||||||
| Account Value | $ 17,231 | 17,231 | $ 17,231 | $ 17,231 | $ 17,231 | 13,497 | 10,749 | 14,669 | 11,249 | 8,844 | 9,874 | 10,708 | 9,515 | 9,661 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.66% | 14.27% | 5.59% | |||||||||||||||||||||||
| C000219909 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class A Shares/JEASX) at Maximum Offering Price - 5.75% | |||||||||||||||||||||||||
| Average Annual Return, Percent | 25.53% | 10.90% | ||||||||||||||||||||||||
| C000219909 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class A Shares/JEASX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 16,499 | 16,499 | $ 16,499 | $ 16,499 | $ 16,499 | $ 15,311 | 12,392 | $ 12,687 | 10,504 | $ 13,633 | 14,204 | $ 13,161 | 11,180 | $ 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.14% | 12.46% | ||||||||||||||||||||||||
| C000219911 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class C Shares/JECTX) with Contingent Deferred Sales Charge | |||||||||||||||||||||||||
| Average Annual Return, Percent | 32.03% | [18] | 12.46% | |||||||||||||||||||||||
| C000219911 [Member] | Without Sales Load [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class C Shares/JECTX) at NAV | |||||||||||||||||||||||||
| Account Value | $ 16,501 | 16,501 | $ 16,501 | 16,501 | 16,501 | 15,321 | 12,403 | 12,698 | 10,510 | 13,625 | 14,163 | 13,130 | 11,160 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.03% | 12.46% | ||||||||||||||||||||||||
| C000219910 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class D Shares/JEDTX) | |||||||||||||||||||||||||
| Account Value | $ 16,575 | 16,575 | $ 16,575 | 16,575 | 16,575 | 15,375 | 12,426 | 12,710 | 10,516 | 13,640 | 14,215 | 13,154 | 11,180 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.39% | 12.58% | ||||||||||||||||||||||||
| C000219912 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class I Shares/JEUIX) | |||||||||||||||||||||||||
| Account Value | $ 16,610 | 16,610 | $ 16,610 | 16,610 | 16,610 | 15,403 | 12,450 | 12,735 | 10,541 | 13,676 | 14,239 | 13,176 | 11,190 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.42% | 12.63% | ||||||||||||||||||||||||
| C000219908 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class N Shares/JETNX) | |||||||||||||||||||||||||
| Account Value | $ 16,682 | 16,682 | $ 16,682 | 16,682 | 16,682 | 15,458 | 12,484 | 12,769 | 10,551 | 13,687 | 14,245 | 13,174 | 11,190 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.62% | 12.75% | ||||||||||||||||||||||||
| C000225293 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class R Shares/JEGRX) | |||||||||||||||||||||||||
| Account Value | $ 16,529 | 16,529 | $ 16,529 | 16,529 | 16,529 | 15,331 | 12,399 | 12,683 | 10,489 | 13,596 | 14,121 | 13,102 | 11,170 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.31% | 12.50% | ||||||||||||||||||||||||
| C000219906 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class S Shares/JESSX) | |||||||||||||||||||||||||
| Account Value | $ 16,574 | 16,574 | $ 16,574 | 16,574 | 16,574 | 15,371 | 12,415 | 12,701 | 10,504 | 13,634 | 14,191 | 13,138 | 11,170 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.49% | 12.57% | ||||||||||||||||||||||||
| C000219907 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson Global Sustainable Equity Fund (Class T Shares/JETTX) | |||||||||||||||||||||||||
| Account Value | $ 16,514 | 16,514 | $ 16,514 | 16,514 | 16,514 | 15,328 | 12,389 | 12,682 | 10,492 | 13,626 | 14,201 | 13,149 | 11,180 | 10,000 | ||||||||||||
| Average Annual Return, Percent | 33.30% | 12.48% | ||||||||||||||||||||||||
| C000240132 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson U.S. Dividend Income Fund (Class D Shares/JDDVX) | |||||||||||||||||||||||||
| Account Value | $ 12,357 | $ 12,357 | $ 12,357 | 12,357 | 12,357 | $ 11,312 | 11,563 | $ 10,791 | 9,975 | $ 10,265 | 10,130 | $ 10,110 | $ 10,000 | |||||||||||||
| Average Annual Return, Percent | 23.89% | 12.64% | ||||||||||||||||||||||||
| C000240130 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson U.S. Dividend Income Fund (Class I Shares/JIDVX) | |||||||||||||||||||||||||
| Account Value | $ 12,371 | $ 12,371 | 12,371 | 12,371 | 12,371 | 11,320 | 11,578 | 10,802 | 9,981 | 10,266 | 10,130 | 10,100 | 10,000 | |||||||||||||
| Average Annual Return, Percent | 23.94% | 12.71% | ||||||||||||||||||||||||
| C000240131 [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Janus Henderson U.S. Dividend Income Fund (Class N Shares/JNDVX) | |||||||||||||||||||||||||
| Account Value | $ 12,372 | $ 12,372 | 12,372 | 12,372 | 12,372 | 11,320 | 11,579 | 10,803 | 9,982 | 10,267 | 10,130 | 10,100 | 10,000 | |||||||||||||
| Average Annual Return, Percent | 23.95% | 12.72% | ||||||||||||||||||||||||
| Standard & Poor's 500 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | |||||||||||||||||||||||||
| Account Value | $ 35,098 | $ 35,098 | 35,098 | $ 35,098 | $ 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Average Annual Return, Percent | 36.35% | 15.98% | 13.38% | |||||||||||||||||||||||
| Bloomberg U S Aggregate Bond Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | |||||||||||||||||||||||||
| Account Value | $ 12,004 | 12,004 | 12,004 | $ 12,004 | $ 12,004 | 10,760 | 10,691 | 12,518 | 12,632 | 11,807 | 10,705 | 10,836 | 10,829 | 10,294 | 10,000 | |||||||||||
| Average Annual Return, Percent | 11.57% | 0.33% | 1.84% | |||||||||||||||||||||||
| Russell 1000 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell 1000® Index | |||||||||||||||||||||||||
| Account Value | $ 34,257 | $ 34,257 | 34,257 | $ 34,257 | $ 34,257 | 14,532 | 14,031 | 12,721 | 25,248 | 11,731 | 10,804 | 10,054 | 10,000 | 20,833 | 25,165 | 19,215 | 16,563 | 15,946 | 13,540 | 11,423 | 9,939 | 10,000 | ||||
| Average Annual Return, Percent | 35.68% | 27.56% | 15.64% | 13.10% | ||||||||||||||||||||||
| MSCI All Country World IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | $ 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World ex USA IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World ex-USA IndexSM | |||||||||||||||||||||||||
| Account Value | $ 16,630 | 16,630 | 16,630 | $ 16,630 | $ 16,630 | 13,267 | 11,020 | 14,726 | 11,884 | 11,537 | 11,681 | 11,479 | 9,597 | 8,784 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.35% | 7.59% | 5.22% | |||||||||||||||||||||||
| Russell 3000 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell 3000® Index | |||||||||||||||||||||||||
| Account Value | $ 33,432 | 33,432 | 33,432 | $ 33,432 | $ 33,432 | 24,729 | 20,528 | 24,921 | 18,898 | 16,433 | 15,967 | 13,579 | 11,440 | 9,951 | 10,000 | |||||||||||
| Average Annual Return, Percent | 35.19% | 15.26% | 12.83% | |||||||||||||||||||||||
| MSCI World IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 26,114 | 26,114 | $ 26,114 | $ 26,114 | $ 26,114 | 16,599 | 19,719 | 13,268 | 16,169 | $ 14,270 | 20,119 | $ 12,959 | 15,618 | $ 10,000 | 14,146 | 13,892 | 12,489 | 10,569 | 9,491 | 10,000 | ||||||
| Average Annual Return, Percent | 32.43% | 14.95% | 13.04% | 10.07% | ||||||||||||||||||||||
| MSCI Emerging Markets IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI Emerging Markets IndexSM | |||||||||||||||||||||||||
| Account Value | $ 14,837 | 14,837 | $ 14,837 | $ 14,837 | $ 14,837 | 11,770 | 10,538 | 14,659 | 12,401 | 11,219 | 11,450 | 11,544 | 9,426 | 8,072 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.05% | 5.75% | 4.02% | |||||||||||||||||||||||
| MSCI Europe IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI Europe IndexSM | |||||||||||||||||||||||||
| Account Value | $ 17,228 | 17,228 | 17,228 | $ 17,228 | $ 17,228 | 13,757 | 10,677 | 14,198 | 11,158 | 11,246 | 11,331 | 11,365 | 9,293 | 9,067 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.23% | 8.90% | 5.59% | |||||||||||||||||||||||
| MSCI World S000068819 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 18,121 | 18,121 | 18,121 | $ 18,121 | $ 18,121 | 13,683 | 11,220 | 13,961 | 10,838 | |||||||||||||||||
| Russell 1000 C000240132 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 15,415 | 15,415 | 15,415 | 15,415 | 15,415 | 11,362 | ||||||||||||||||||||
| Balanced Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Balanced Index | |||||||||||||||||||||||||
| Account Value | $ 22,284 | 22,284 | 22,284 | $ 22,284 | $ 22,284 | 17,820 | 15,917 | 18,681 | 16,195 | 14,446 | 13,449 | 12,336 | 11,218 | 10,114 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.05% | 9.06% | 8.34% | |||||||||||||||||||||||
| MSCI All Country World Information Technology IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World Information Technology IndexSM | |||||||||||||||||||||||||
| Account Value | $ 57,502 | 57,502 | 57,502 | $ 57,502 | $ 57,502 | 38,761 | 28,526 | 38,877 | 29,845 | 20,612 | 19,386 | 15,781 | 12,140 | 9,880 | 10,000 | |||||||||||
| Average Annual Return, Percent | 48.35% | 22.78% | 19.12% | |||||||||||||||||||||||
| Russell 1000 Growth Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell 1000® Growth Index | |||||||||||||||||||||||||
| Account Value | $ 46,145 | 46,145 | 46,145 | $ 46,145 | $ 46,145 | 32,453 | 25,409 | 32,824 | 25,782 | 18,746 | 18,076 | 14,312 | 11,737 | 10,317 | 10,000 | |||||||||||
| Average Annual Return, Percent | 42.19% | 19.74% | 16.52% | |||||||||||||||||||||||
| Standard And Poors 500 S000010470 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | |||||||||||||||||||||||||
| Average Annual Return, Percent | 36.35% | 15.98% | 13.38% | |||||||||||||||||||||||
| Standard And Poors 500 C000077669 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 35,098 | 35,098 | 35,098 | $ 35,098 | $ 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077670 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000083517 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077671 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000114872 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000177053 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077672 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000028926 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Russell 2500TM Growth Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell 2500™ Growth Index | |||||||||||||||||||||||||
| Account Value | $ 25,896 | 25,896 | 25,896 | $ 25,896 | $ 25,896 | 20,683 | 18,699 | 26,484 | 20,067 | 16,266 | 16,964 | 13,777 | 11,475 | 10,335 | 10,000 | |||||||||||
| Average Annual Return, Percent | 25.20% | 9.75% | 9.98% | |||||||||||||||||||||||
| Russell 2000 Growth Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell 2000® Growth Index | |||||||||||||||||||||||||
| Account Value | $ 23,560 | 23,560 | 23,560 | $ 23,560 | $ 23,560 | 18,456 | 16,840 | 23,810 | 17,867 | 15,440 | 17,086 | 14,113 | 11,666 | 10,404 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.66% | 8.82% | 8.95% | |||||||||||||||||||||||
| Russell 2000 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell 2000® Index | |||||||||||||||||||||||||
| Account Value | $ 23,210 | 23,210 | 23,210 | $ 23,210 | $ 23,210 | 18,310 | 16,809 | 21,972 | 14,878 | 14,820 | 16,266 | 14,115 | 11,691 | 10,125 | 10,000 | |||||||||||
| Average Annual Return, Percent | 26.76% | 9.39% | 8.78% | |||||||||||||||||||||||
| MSCI All Country World C000077732 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World C000077733 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World C000083534 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World C000077734 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World C000114882 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World C000077735 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World C000077736 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| MSCI All Country World C000028951 IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI All Country World IndexSM | |||||||||||||||||||||||||
| Account Value | $ 24,526 | 24,526 | 24,526 | $ 24,526 | $ 24,526 | 18,615 | 15,409 | 19,421 | 15,240 | 13,799 | 13,611 | 12,399 | 10,451 | 9,334 | 10,000 | |||||||||||
| Average Annual Return, Percent | 31.76% | 12.19% | 9.39% | |||||||||||||||||||||||
| Russell Midcap Growth Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell Midcap® Growth Index | |||||||||||||||||||||||||
| Account Value | $ 29,168 | 29,168 | 29,168 | $ 29,168 | $ 29,168 | 22,552 | 19,199 | 27,232 | 20,875 | 16,940 | 16,102 | 13,296 | 11,285 | 10,145 | 10,000 | |||||||||||
| Average Annual Return, Percent | 29.33% | 11.48% | 11.30% | |||||||||||||||||||||||
| MSCI World Health Care IndexSM [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | MSCI World Health Care IndexSM | |||||||||||||||||||||||||
| Account Value | $ 23,598 | 23,598 | 23,598 | $ 23,598 | $ 23,598 | 19,528 | 17,612 | 19,524 | 16,460 | 13,624 | 13,878 | 12,155 | 10,813 | 10,266 | 10,000 | |||||||||||
| Average Annual Return, Percent | 20.84% | 11.61% | 8.96% | |||||||||||||||||||||||
| Standard And Poors 500 C000077752 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 35,098 | 35,098 | 35,098 | $ 35,098 | $ 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 S000010494 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | |||||||||||||||||||||||||
| Average Annual Return, Percent | 36.35% | 15.98% | 13.38% | |||||||||||||||||||||||
| Standard And Poors 500 C000077753 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 35,098 | 35,098 | 35,098 | $ 35,098 | $ 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000083538 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077754 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000198286 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077755 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000028956 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| FTSE EPRA Nareit Global Net Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | FTSE EPRA Nareit Global Net Index | |||||||||||||||||||||||||
| Account Value | $ 14,461 | 14,461 | 14,461 | $ 14,461 | $ 14,461 | 11,315 | 11,119 | 14,443 | 11,456 | 13,867 | 12,311 | 12,061 | 11,651 | 10,089 | 10,000 | |||||||||||
| Average Annual Return, Percent | 27.80% | 0.84% | 3.76% | |||||||||||||||||||||||
| FTSE EPRA Nareit Global Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | FTSE EPRA Nareit Global Index | |||||||||||||||||||||||||
| Account Value | $ 15,782 | 15,782 | 15,782 | $ 15,782 | $ 15,782 | 12,228 | 11,897 | 15,328 | 12,056 | 14,464 | 12,726 | 12,361 | 11,836 | 10,166 | 10,000 | |||||||||||
| Average Annual Return, Percent | 29.06% | 1.76% | 4.67% | |||||||||||||||||||||||
| Standard And Poors 500 S000025893 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P 500® Index | |||||||||||||||||||||||||
| Average Annual Return, Percent | 36.35% | 15.98% | 13.38% | |||||||||||||||||||||||
| Standard And Poors 500 C000077618 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 35,098 | 35,098 | 35,098 | $ 35,098 | $ 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077619 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000177054 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077620 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000114888 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077621 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077622 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Standard And Poors 500 C000077623 Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Account Value | $ 35,098 | 35,098 | 35,098 | 35,098 | 35,098 | 25,741 | 21,165 | 25,040 | 19,260 | 16,727 | 16,044 | 13,607 | 11,472 | 9,939 | 10,000 | |||||||||||
| Eighty Five MSCI ACWI ex US High Div Yld 15 MSCI USA High Div Yld Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | 85% MSCI ACWI ex-US High Div Yld / 15% MSCI USA High Div Yld Index | |||||||||||||||||||||||||
| Account Value | $ 16,940 | 16,940 | 16,940 | $ 16,940 | $ 16,940 | 13,570 | $ 10,884 | $ 12,840 | $ 10,479 | $ 11,476 | $ 11,248 | $ 10,886 | $ 9,320 | $ 8,503 | $ 10,000 | |||||||||||
| Average Annual Return, Percent | 24.84% | 8.10% | 5.41% | |||||||||||||||||||||||
| Russell 1000 Value Index [Member] | ||||||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||||||
| Line Graph and Table Measure Name | Russell 1000® Value Index | |||||||||||||||||||||||||
| Account Value | $ 13,183 | $ 13,183 | $ 13,183 | $ 13,183 | $ 13,183 | $ 12,047 | $ 12,314 | $ 11,299 | $ 10,319 | $ 10,656 | $ 10,239 | $ 10,137 | $ 10,000 | |||||||||||||
| Average Annual Return, Percent | 27.76% | 16.82% | ||||||||||||||||||||||||
| [1]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[2]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[3]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[4]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[5]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[6]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[7]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[8]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[9]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[10]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[11]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[12]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[13]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[14]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[15]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[16]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[17]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase.[18]Returns include a 1% contingent deferred sales charge on Shares redeemed within 12 months of purchase. | ||||||||||||||||||||||||||
| Shareholder Report, Holdings (Details) | Sep. 30, 2024 |
| C000077650 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000077650 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077650 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077650 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077650 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077650 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000077650 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077650 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077650 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077650 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077650 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000077650 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000077650 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000077650 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000077650 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000077650 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077650 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077650 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000077651 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000077651 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077651 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077651 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077651 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077651 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000077651 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077651 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077651 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077651 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077651 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000077651 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000077651 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000077651 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000077651 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000077651 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077651 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077651 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000083512 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000083512 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000083512 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000083512 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000083512 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000083512 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000083512 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000083512 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000083512 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000083512 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000083512 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000083512 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000083512 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000083512 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000083512 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000083512 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000083512 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000083512 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000077652 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000077652 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077652 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077652 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077652 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077652 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000077652 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077652 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077652 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077652 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077652 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000077652 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000077652 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000077652 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000077652 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000077652 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077652 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077652 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000114869 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000114869 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000114869 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000114869 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000114869 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000114869 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000114869 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000114869 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000114869 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000114869 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000114869 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000114869 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000114869 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000114869 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000114869 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000114869 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000114869 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000114869 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000077653 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000077653 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077653 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077653 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077653 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077653 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000077653 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077653 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077653 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077653 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077653 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000077653 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000077653 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000077653 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000077653 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000077653 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077653 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077653 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000077654 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000077654 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077654 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077654 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077654 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000077654 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000077654 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077654 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077654 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077654 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000077654 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000077654 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000077654 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000077654 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000077654 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000077654 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077654 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077654 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000028918 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000028918 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000028918 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000028918 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000028918 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.50% |
| C000028918 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 99% |
| C000028918 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000028918 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000028918 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000028918 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.10% |
| C000028918 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 61.90% |
| C000028918 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.70% |
| C000028918 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.60% |
| C000028918 [Member] | Collateralized Mortgage-Backed Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.80% |
| C000028918 [Member] | United States Treasury Notes Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000028918 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028918 [Member] | Bank Loans and Mezzanine Loans [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000028918 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (2.00%) |
| C000077655 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000077655 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077655 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077655 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000077655 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000077655 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 82.30% |
| C000077655 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.60% |
| C000077655 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.10% |
| C000077655 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000077655 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000077655 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.30% |
| C000077655 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077655 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077655 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077655 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077655 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077656 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000077656 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077656 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077656 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000077656 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000077656 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 82.30% |
| C000077656 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.60% |
| C000077656 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.10% |
| C000077656 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000077656 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000077656 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.30% |
| C000077656 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077656 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077656 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077656 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077656 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000083513 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000083513 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000083513 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000083513 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000083513 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000083513 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 82.30% |
| C000083513 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.60% |
| C000083513 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.10% |
| C000083513 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000083513 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000083513 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.30% |
| C000083513 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000083513 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000083513 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000083513 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000083513 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077657 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000077657 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077657 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077657 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000077657 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000077657 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 82.30% |
| C000077657 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.60% |
| C000077657 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.10% |
| C000077657 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000077657 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000077657 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.30% |
| C000077657 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077657 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077657 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077657 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077657 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000177052 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000177052 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000177052 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000177052 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000177052 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000177052 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 82.30% |
| C000177052 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.60% |
| C000177052 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.10% |
| C000177052 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000177052 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000177052 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.30% |
| C000177052 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000177052 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000177052 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000177052 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000177052 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077658 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000077658 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077658 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077658 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000077658 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000077658 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 82.30% |
| C000077658 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.60% |
| C000077658 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.10% |
| C000077658 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000077658 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000077658 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.30% |
| C000077658 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000077658 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077658 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077658 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077658 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000028919 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000028919 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000028919 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000028919 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000028919 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000028919 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 82.30% |
| C000028919 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.60% |
| C000028919 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.10% |
| C000028919 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000028919 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.90% |
| C000028919 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 94.30% |
| C000028919 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000028919 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028919 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000028919 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000028919 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077659 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000077659 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077659 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077659 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077659 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077659 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000077659 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000077659 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077659 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000077660 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000077660 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077660 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077660 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077660 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077660 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000077660 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000077660 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077660 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000083515 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000083515 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000083515 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000083515 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000083515 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000083515 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000083515 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000083515 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000083515 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000077661 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000077661 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077661 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077661 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077661 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077661 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000077661 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000077661 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077661 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000114870 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000114870 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000114870 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000114870 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000114870 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000114870 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000114870 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000114870 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000114870 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000077662 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000077662 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077662 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077662 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077662 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077662 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000077662 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000077662 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077662 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000077663 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000077663 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077663 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000077663 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077663 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077663 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000077663 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000077663 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077663 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000028923 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.60% |
| C000028923 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000028923 [Member] | KLA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000028923 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028923 [Member] | American Express Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028923 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000028923 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000028923 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000028923 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.00%) |
| C000077669 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000077669 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077669 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077669 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077669 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077669 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000077669 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077669 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000077669 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000077669 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077669 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000077669 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077669 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077669 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077669 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077670 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000077670 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077670 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077670 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077670 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077670 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000077670 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077670 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000077670 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000077670 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077670 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000077670 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077670 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077670 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077670 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000083517 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000083517 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000083517 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000083517 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000083517 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000083517 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000083517 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000083517 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000083517 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000083517 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000083517 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000083517 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000083517 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000083517 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077671 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000077671 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077671 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077671 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077671 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077671 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000077671 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077671 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000077671 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000077671 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077671 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000077671 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077671 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077671 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
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| C000077671 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000114872 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000114872 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000114872 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000114872 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000114872 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000114872 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000114872 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000114872 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000114872 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000114872 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000114872 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000114872 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
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| C000114872 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000114872 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
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| C000114872 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000177053 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000177053 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000177053 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000177053 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000177053 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000177053 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000177053 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000177053 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000177053 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000177053 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000177053 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000177053 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000177053 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000177053 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
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| C000177053 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077672 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000077672 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000077672 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077672 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077672 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077672 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000077672 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000077672 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000077672 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000077672 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000077672 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000077672 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000077672 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000077672 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
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| C000077672 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000028926 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000028926 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000028926 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000028926 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000028926 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 98.10% |
| C000028926 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.30% |
| C000028926 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.50% |
| C000028926 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.90% |
| C000028926 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.20% |
| C000028926 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 100% |
| C000028926 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000028926 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000028926 [Member] | Private Placements [Member] | |
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| C000028926 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077678 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077678 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077678 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
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| Percent of Net Asset Value | 3.50% |
| C000077678 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000077678 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000077678 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000077678 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000077678 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077678 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000077678 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077678 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077678 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077678 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077679 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077679 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077679 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077679 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077679 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000077679 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000077679 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000077679 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000077679 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077679 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000077679 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077679 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077679 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077679 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000083520 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000083520 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000083520 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000083520 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000083520 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000083520 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000083520 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000083520 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000083520 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000083520 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000083520 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000083520 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000083520 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000083520 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000083520 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077680 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077680 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077680 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077680 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077680 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077680 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000077680 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000077680 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000077680 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000077680 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077680 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000077680 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077680 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077680 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077680 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000114874 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000114874 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000114874 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000114874 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000114874 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000114874 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000114874 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000114874 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000114874 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000114874 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000114874 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000114874 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000114874 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000114874 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000114874 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077681 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077681 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077681 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077681 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077681 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077681 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000077681 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000077681 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000077681 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000077681 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077681 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000077681 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077681 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077681 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077681 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077682 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077682 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000077682 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077682 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077682 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077682 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000077682 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000077682 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000077682 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000077682 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077682 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000077682 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000077682 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077682 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077682 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000028933 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000028933 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.30% |
| C000028933 [Member] | Vistra Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000028933 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028933 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028933 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 50.30% |
| C000028933 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000028933 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7% |
| C000028933 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.40% |
| C000028933 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000028933 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 96.90% |
| C000028933 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2% |
| C000028933 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000028933 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000028933 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000077683 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077683 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077683 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077683 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077683 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077683 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000077683 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077683 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000077683 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077683 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000077683 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077683 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077683 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077683 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000077683 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077684 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077684 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077684 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077684 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077684 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077684 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000077684 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077684 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000077684 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077684 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000077684 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077684 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077684 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077684 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000077684 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000083521 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000083521 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000083521 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000083521 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000083521 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000083521 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000083521 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000083521 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000083521 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000083521 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000083521 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000083521 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000083521 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000083521 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000083521 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077685 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077685 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077685 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077685 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077685 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077685 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000077685 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077685 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000077685 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077685 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000077685 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077685 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077685 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077685 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000077685 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000114875 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000114875 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000114875 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000114875 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000114875 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000114875 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000114875 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000114875 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000114875 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000114875 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000114875 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000114875 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000114875 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000114875 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000114875 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077686 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077686 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077686 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077686 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077686 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077686 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000077686 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077686 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000077686 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077686 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000077686 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077686 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077686 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077686 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000077686 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077687 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077687 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000077687 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000077687 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077687 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000077687 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000077687 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077687 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000077687 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077687 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000077687 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077687 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077687 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000077687 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000077687 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000028934 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028934 [Member] | Caesars Entertainment Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000028934 [Member] | Vertiv Holdings Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000028934 [Member] | Oracle Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000028934 [Member] | PNC Financial Services Group Inc The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000028934 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.10% |
| C000028934 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000028934 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.20% |
| C000028934 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000028934 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.30% |
| C000028934 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000028934 [Member] | Corporate Bond Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000028934 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000028934 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.40%) |
| C000028934 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077688 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077688 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077688 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000077688 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000077688 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077688 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000077688 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000077688 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077688 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077688 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000077688 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000077688 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077688 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000077688 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077688 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077689 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077689 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077689 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000077689 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000077689 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077689 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000077689 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000077689 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077689 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077689 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000077689 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000077689 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077689 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000077689 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077689 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000083522 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000083522 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000083522 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000083522 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000083522 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000083522 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000083522 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000083522 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000083522 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000083522 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000083522 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000083522 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000083522 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000083522 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000083522 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077690 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077690 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077690 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000077690 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000077690 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077690 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000077690 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000077690 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077690 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077690 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000077690 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000077690 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077690 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000077690 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077690 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000114876 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000114876 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000114876 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000114876 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000114876 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000114876 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000114876 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000114876 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000114876 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000114876 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000114876 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000114876 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000114876 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000114876 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000114876 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077691 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077691 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077691 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000077691 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000077691 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077691 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000077691 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000077691 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077691 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077691 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000077691 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000077691 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077691 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000077691 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077691 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077692 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000077692 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077692 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000077692 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000077692 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077692 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000077692 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000077692 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077692 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000077692 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000077692 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000077692 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000077692 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000077692 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077692 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000028935 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000028935 [Member] | Liberty Media Corp Liberty Formula One Series C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000028935 [Member] | Teck Resources Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000028935 [Member] | BAE Systems PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4% |
| C000028935 [Member] | BNP Paribas SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000028935 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.60% |
| C000028935 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.50% |
| C000028935 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000028935 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.90% |
| C000028935 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.40% |
| C000028935 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.70% |
| C000028935 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.30% |
| C000028935 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.20%) |
| C000028935 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000028935 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077722 [Member] | SS And C Technologies Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077722 [Member] | Blackbaud Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000077722 [Member] | Teledyne Technologies Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000077722 [Member] | Crown Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000077722 [Member] | Cboe Global Markets Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077722 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000077722 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000077722 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077722 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077722 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077722 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.20% |
| C000077722 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000077722 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000077722 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077722 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077722 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077723 [Member] | SS And C Technologies Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000077723 [Member] | Blackbaud Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000077723 [Member] | Teledyne Technologies Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000077723 [Member] | Crown Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000077723 [Member] | Cboe Global Markets Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077723 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000077723 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000077723 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077723 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077723 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077723 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.20% |
| C000077723 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000077723 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000077723 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077723 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077723 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000083530 [Member] | SS And C Technologies Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000083530 [Member] | Blackbaud Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
| C000083530 [Member] | Teledyne Technologies Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000083530 [Member] | Crown Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000083530 [Member] | Cboe Global Markets Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000083530 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000083530 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000083530 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000083530 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000083530 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000083530 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
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| C000083530 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
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| C000083530 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000083530 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
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| C000083530 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000083530 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
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| Holdings [Line Items] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000077724 [Member] | Cboe Global Markets Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077724 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000077724 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000077724 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077724 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077724 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077724 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
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| C000077724 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
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| C000077724 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
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| C000077724 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
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| C000077724 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000077724 [Member] | Warrants [Member] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000114880 [Member] | Cboe Global Markets Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000114880 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000114880 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000114880 [Member] | CANADA | |
| Holdings [Line Items] | |
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| C000114880 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000114880 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000114880 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
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| C000114880 [Member] | Investment Companies [Member] | |
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| C000114880 [Member] | Private Placements [Member] | |
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| C000114880 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
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| C000114880 [Member] | Warrants [Member] | |
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| Holdings [Line Items] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.40% |
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| Holdings [Line Items] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077725 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000077725 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000077725 [Member] | CANADA | |
| Holdings [Line Items] | |
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| C000077725 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077725 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077725 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
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| C000077725 [Member] | Investment Companies [Member] | |
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| Percent of Net Asset Value | 2.40% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000077726 [Member] | Cboe Global Markets Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
| C000077726 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000077726 [Member] | UNITED KINGDOM | |
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| Holdings [Line Items] | |
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| C000077726 [Member] | DENMARK | |
| Holdings [Line Items] | |
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| C000077726 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
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| C000077726 [Member] | Investment Companies [Member] | |
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| C000077726 [Member] | Private Placements [Member] | |
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| C000077726 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
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| C000077726 [Member] | Warrants [Member] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.80% |
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| Holdings [Line Items] | |
| Percent of Total Investments | 93.60% |
| C000028947 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
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| Holdings [Line Items] | |
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| C000028947 [Member] | DENMARK | |
| Holdings [Line Items] | |
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| Holdings [Line Items] | |
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| C000028947 [Member] | Investment Companies [Member] | |
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| Holdings [Line Items] | |
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| Percent of Net Asset Value | 2.10% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000100475 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 87.70% |
| C000100475 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000100475 [Member] | CANADA | |
| Holdings [Line Items] | |
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| C000100475 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
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| C000100475 [Member] | ISRAEL | |
| Holdings [Line Items] | |
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| C000100475 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
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| C000100475 [Member] | Investment Companies [Member] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
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| Holdings [Line Items] | |
| Percent of Total Investments | 87.70% |
| C000100476 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000100476 [Member] | CANADA | |
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| C000083533 [Member] | UNITED KINGDOM | |
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| C000100477 [Member] | UNITED KINGDOM | |
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| C000100477 [Member] | Investment Companies [Member] | |
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| C000114881 [Member] | UNITED KINGDOM | |
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| C000028950 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 87.70% |
| C000028950 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.70% |
| C000028950 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.40% |
| C000028950 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.10% |
| C000028950 [Member] | ISRAEL | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.50% |
| C000028950 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.60% |
| C000028950 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000028950 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.00%) |
| C000028950 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000028950 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000028950 [Member] | Warrants [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077732 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077732 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077732 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077732 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077732 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077732 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000077732 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000077732 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000077732 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077732 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000077732 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000077732 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077732 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077732 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077732 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000077732 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000077733 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077733 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077733 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077733 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077733 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077733 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000077733 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000077733 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000077733 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077733 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000077733 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000077733 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077733 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077733 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077733 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000077733 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000083534 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000083534 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000083534 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000083534 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000083534 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000083534 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000083534 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000083534 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000083534 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000083534 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000083534 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000083534 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000083534 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000083534 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000083534 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000083534 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000077734 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077734 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077734 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077734 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077734 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077734 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000077734 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000077734 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000077734 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077734 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000077734 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000077734 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077734 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077734 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077734 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000077734 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000114882 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000114882 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000114882 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000114882 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000114882 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000114882 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000114882 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000114882 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000114882 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000114882 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000114882 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000114882 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000114882 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000114882 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000114882 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000114882 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000077735 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077735 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077735 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077735 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077735 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077735 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000077735 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000077735 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000077735 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077735 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000077735 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000077735 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077735 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077735 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077735 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000077735 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
| C000077736 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077736 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077736 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000077736 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000077736 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077736 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000077736 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000077736 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000077736 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077736 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000077736 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000077736 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000077736 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077736 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077736 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000077736 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028951 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000028951 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000028951 [Member] | Alphabet Inc Class C [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000028951 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000028951 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 72.90% |
| C000028951 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000028951 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000028951 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000028951 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000028951 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.20% |
| C000028951 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000028951 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000028951 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000028951 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.50% |
| C000028951 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077737 [Member] | Constellation Software Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000077737 [Member] | GoDaddy Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077737 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077737 [Member] | Boston Scientific Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077737 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000077737 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077737 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000077737 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077737 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077737 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000077737 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077737 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.40%) |
| C000077737 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077738 [Member] | SS And C Technologies Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077738 [Member] | Constellation Software Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000077738 [Member] | GoDaddy Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077738 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077738 [Member] | Boston Scientific Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077738 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000077738 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077738 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000077738 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077738 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077738 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000077738 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077738 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.40%) |
| C000077738 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000083535 [Member] | SS And C Technologies Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000083535 [Member] | Constellation Software Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000083535 [Member] | GoDaddy Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000083535 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000083535 [Member] | Boston Scientific Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000083535 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000083535 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000083535 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000083535 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000083535 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000083535 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000083535 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000083535 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.40%) |
| C000083535 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077739 [Member] | SS And C Technologies Holdings Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077739 [Member] | Constellation Software Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000077739 [Member] | GoDaddy Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077739 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077739 [Member] | Boston Scientific Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077739 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000077739 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077739 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000077739 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077739 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077739 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000077739 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077739 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.40%) |
| C000077739 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000114883 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000114883 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000114883 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000114883 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000114883 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000114883 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000114883 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000114883 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000114883 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.40%) |
| C000114883 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077740 [Member] | Constellation Software Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000077740 [Member] | GoDaddy Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077740 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077740 [Member] | Boston Scientific Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077740 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000077740 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077740 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000077740 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077740 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077740 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000077740 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077740 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.40%) |
| C000077740 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077741 [Member] | Constellation Software Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000077741 [Member] | GoDaddy Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077741 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000077741 [Member] | Boston Scientific Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.90% |
| C000077741 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000077741 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077741 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000077741 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000077741 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000077741 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000077741 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
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| C000077741 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.40%) |
| C000077741 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000028952 [Member] | Constellation Software Inc Canada [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
| C000028952 [Member] | GoDaddy Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000028952 [Member] | Teleflex Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
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| C000028952 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 84.90% |
| C000028952 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000028952 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.90% |
| C000028952 [Member] | IRELAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.70% |
| C000028952 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 0.80% |
| C000028952 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 95.40% |
| C000028952 [Member] | Investment Companies [Member] | |
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| C000028952 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
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| C000028952 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000077752 [Member] | UnitedHealth Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000077752 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.60% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077752 [Member] | AbbVie Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077752 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 79.80% |
| C000077752 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077752 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.80% |
| C000077752 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
| C000077752 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.90% |
| C000077752 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.40% |
| C000077752 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
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| C000077752 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000077752 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
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| C000077752 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
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| C000077752 [Member] | Private Investment in Public Equity PIPES [Member] | |
| Holdings [Line Items] | |
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| C000077752 [Member] | Convertible Corporate Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077752 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| C000077753 [Member] | UnitedHealth Group Inc [Member] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000077753 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 79.80% |
| C000077753 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077753 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.80% |
| C000077753 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.50% |
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| Holdings [Line Items] | |
| Percent of Total Investments | 5.90% |
| C000077753 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
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| C000077753 [Member] | Investment Companies [Member] | |
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| Holdings [Line Items] | |
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| C000077753 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
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| C000077753 [Member] | Private Investment in Public Equity PIPES [Member] | |
| Holdings [Line Items] | |
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| Holdings [Line Items] | |
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| Holdings [Line Items] | |
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| Percent of Net Asset Value | 3.60% |
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| C000083538 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 79.80% |
| C000083538 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000083538 [Member] | FRANCE | |
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| C000083538 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
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| C000077754 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 79.80% |
| C000077754 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.60% |
| C000077754 [Member] | FRANCE | |
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| C000077754 [Member] | SWITZERLAND | |
| Holdings [Line Items] | |
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| C000077754 [Member] | DENMARK | |
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| C000077754 [Member] | Common Stock [Member] | |
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| C000198286 [Member] | UNITED KINGDOM | |
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| C000198286 [Member] | FRANCE | |
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| C000198286 [Member] | Common Stock [Member] | |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000028956 [Member] | Private Investment in Public Equity PIPES [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000028956 [Member] | Convertible Corporate Bonds [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000028956 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077597 [Member] | Equinix Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000077597 [Member] | Realty Income Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077597 [Member] | Public Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077597 [Member] | Welltower Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077597 [Member] | Prologis Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000077597 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.60% |
| C000077597 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000077597 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| C000077597 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000077597 [Member] | SINGAPORE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000077597 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| C000077597 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077597 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000077597 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077597 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077598 [Member] | Equinix Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000077598 [Member] | Realty Income Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077598 [Member] | Public Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077598 [Member] | Welltower Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077598 [Member] | Prologis Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000077598 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.60% |
| C000077598 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000077598 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| C000077598 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000077598 [Member] | SINGAPORE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000077598 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| C000077598 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077598 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000077598 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077598 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000083540 [Member] | Equinix Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000083540 [Member] | Realty Income Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000083540 [Member] | Public Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000083540 [Member] | Welltower Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000083540 [Member] | Prologis Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000083540 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.60% |
| C000083540 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000083540 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| C000083540 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000083540 [Member] | SINGAPORE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000083540 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| C000083540 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000083540 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000083540 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000083540 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
| C000077599 [Member] | Equinix Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000077599 [Member] | Realty Income Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077599 [Member] | Public Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077599 [Member] | Welltower Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077599 [Member] | Prologis Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000077599 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.60% |
| C000077599 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000077599 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| C000077599 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000077599 [Member] | SINGAPORE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000077599 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| C000077599 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000077599 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000077599 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077599 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000198287 [Member] | Realty Income Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000198287 [Member] | Public Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000198287 [Member] | Welltower Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000198287 [Member] | Prologis Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000198287 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.60% |
| C000198287 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000198287 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| C000198287 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000198287 [Member] | SINGAPORE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000198287 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| C000198287 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000198287 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000198287 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000198287 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000077600 [Member] | Realty Income Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077600 [Member] | Public Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077600 [Member] | Welltower Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077600 [Member] | Prologis Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000077600 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.60% |
| C000077600 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000077600 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| C000077600 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000077600 [Member] | SINGAPORE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000077600 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| C000077600 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000077600 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077600 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000077601 [Member] | Realty Income Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.10% |
| C000077601 [Member] | Public Storage [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000077601 [Member] | Welltower Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000077601 [Member] | Prologis Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.20% |
| C000077601 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.60% |
| C000077601 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.50% |
| C000077601 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9% |
| C000077601 [Member] | AUSTRALIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.60% |
| C000077601 [Member] | SINGAPORE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 3.70% |
| C000077601 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.50% |
| C000077601 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | (1.20%) |
| C000077601 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.30% |
| C000077601 [Member] | Rights [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0% |
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| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000077618 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000077618 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000077618 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000077618 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077618 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000077618 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077618 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077618 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077618 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077618 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077618 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077618 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077619 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000077619 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000077619 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000077619 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000077619 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077619 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000077619 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077619 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077619 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077619 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077619 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077619 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077619 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000177054 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000177054 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000177054 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000177054 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000177054 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000177054 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000177054 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000177054 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000177054 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000177054 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000177054 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000177054 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000177054 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077620 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000077620 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000077620 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000077620 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000077620 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077620 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000077620 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077620 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077620 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077620 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077620 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077620 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077620 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000114888 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000114888 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000114888 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000114888 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000114888 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000114888 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000114888 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000114888 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000114888 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000114888 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000114888 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000114888 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000114888 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077621 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000077621 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000077621 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000077621 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000077621 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077621 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000077621 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077621 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077621 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077621 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077621 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077621 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077621 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077622 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000077622 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000077622 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000077622 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000077622 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077622 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000077622 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077622 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077622 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077622 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077622 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077622 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077622 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000077623 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.70% |
| C000077623 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8% |
| C000077623 [Member] | Apple Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.40% |
| C000077623 [Member] | Amazon com Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000077623 [Member] | Meta Platforms Inc Class A [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000077623 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 91.20% |
| C000077623 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077623 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2.20% |
| C000077623 [Member] | ARGENTINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 2% |
| C000077623 [Member] | BELGIUM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 1.50% |
| C000077623 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000077623 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000077623 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.30%) |
| C000183873 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000183873 [Member] | Samsung Electronics Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000183873 [Member] | Tencent Holdings Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183873 [Member] | Bharti Airtel Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000183873 [Member] | AIA Group Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183873 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.90% |
| C000183873 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.10% |
| C000183873 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.20% |
| C000183873 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.70% |
| C000183873 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000183873 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.50% |
| C000183873 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000183873 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000183873 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000183875 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000183875 [Member] | Samsung Electronics Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000183875 [Member] | Tencent Holdings Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183875 [Member] | Bharti Airtel Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000183875 [Member] | AIA Group Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183875 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.90% |
| C000183875 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.10% |
| C000183875 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.20% |
| C000183875 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.70% |
| C000183875 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000183875 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.50% |
| C000183875 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000183875 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000183875 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000183876 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000183876 [Member] | Samsung Electronics Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000183876 [Member] | Tencent Holdings Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183876 [Member] | Bharti Airtel Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000183876 [Member] | AIA Group Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183876 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.90% |
| C000183876 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.10% |
| C000183876 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.20% |
| C000183876 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.70% |
| C000183876 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000183876 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.50% |
| C000183876 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000183876 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000183876 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000183877 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000183877 [Member] | Samsung Electronics Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000183877 [Member] | Tencent Holdings Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183877 [Member] | Bharti Airtel Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000183877 [Member] | AIA Group Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183877 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.90% |
| C000183877 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.10% |
| C000183877 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.20% |
| C000183877 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.70% |
| C000183877 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000183877 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.50% |
| C000183877 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000183877 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000183877 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000183878 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000183878 [Member] | Samsung Electronics Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000183878 [Member] | Tencent Holdings Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183878 [Member] | Bharti Airtel Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000183878 [Member] | AIA Group Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183878 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.90% |
| C000183878 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.10% |
| C000183878 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.20% |
| C000183878 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.70% |
| C000183878 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000183878 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.50% |
| C000183878 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000183878 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000183878 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000183880 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000183880 [Member] | Samsung Electronics Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000183880 [Member] | Tencent Holdings Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183880 [Member] | Bharti Airtel Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000183880 [Member] | AIA Group Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183880 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.90% |
| C000183880 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.10% |
| C000183880 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.20% |
| C000183880 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.70% |
| C000183880 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000183880 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.50% |
| C000183880 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000183880 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000183880 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000183881 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000183881 [Member] | Samsung Electronics Co Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000183881 [Member] | Tencent Holdings Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183881 [Member] | Bharti Airtel Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000183881 [Member] | AIA Group Ltd [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183881 [Member] | TAIWAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.90% |
| C000183881 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 22.10% |
| C000183881 [Member] | INDIA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 16.20% |
| C000183881 [Member] | KOREA, REPUBLIC OF | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.70% |
| C000183881 [Member] | HONG KONG | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.50% |
| C000183881 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 98.50% |
| C000183881 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.60%) |
| C000183881 [Member] | Private Placements [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000183881 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000183893 [Member] | British American Tobacco PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183893 [Member] | Verizon Communications Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183893 [Member] | Unilever PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000183893 [Member] | Pernod Ricard SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000183893 [Member] | Rio Tinto PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000183893 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.20% |
| C000183893 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 25.40% |
| C000183893 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000183893 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000183893 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000183893 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.50% |
| C000183893 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183893 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000183893 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000183894 [Member] | British American Tobacco PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183894 [Member] | Verizon Communications Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183894 [Member] | Unilever PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000183894 [Member] | Pernod Ricard SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000183894 [Member] | Rio Tinto PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000183894 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.20% |
| C000183894 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 25.40% |
| C000183894 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000183894 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000183894 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000183894 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.50% |
| C000183894 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183894 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000183894 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000183895 [Member] | British American Tobacco PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183895 [Member] | Verizon Communications Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183895 [Member] | Unilever PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000183895 [Member] | Pernod Ricard SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000183895 [Member] | Rio Tinto PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000183895 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.20% |
| C000183895 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 25.40% |
| C000183895 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000183895 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000183895 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000183895 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.50% |
| C000183895 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183895 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000183895 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000183896 [Member] | British American Tobacco PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183896 [Member] | Verizon Communications Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183896 [Member] | Unilever PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000183896 [Member] | Pernod Ricard SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000183896 [Member] | Rio Tinto PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000183896 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.20% |
| C000183896 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 25.40% |
| C000183896 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000183896 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000183896 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000183896 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.50% |
| C000183896 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183896 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000183896 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000183897 [Member] | British American Tobacco PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183897 [Member] | Verizon Communications Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183897 [Member] | Unilever PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000183897 [Member] | Pernod Ricard SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000183897 [Member] | Rio Tinto PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000183897 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.20% |
| C000183897 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 25.40% |
| C000183897 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000183897 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000183897 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000183897 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.50% |
| C000183897 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183897 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000183897 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000183899 [Member] | British American Tobacco PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183899 [Member] | Verizon Communications Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183899 [Member] | Unilever PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000183899 [Member] | Pernod Ricard SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000183899 [Member] | Rio Tinto PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000183899 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.20% |
| C000183899 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 25.40% |
| C000183899 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000183899 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000183899 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000183899 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.50% |
| C000183899 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183899 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000183899 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000183900 [Member] | British American Tobacco PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183900 [Member] | Verizon Communications Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000183900 [Member] | Unilever PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000183900 [Member] | Pernod Ricard SA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000183900 [Member] | Rio Tinto PLC [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.70% |
| C000183900 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 24.20% |
| C000183900 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 25.40% |
| C000183900 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 8.40% |
| C000183900 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.30% |
| C000183900 [Member] | CHINA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.90% |
| C000183900 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 93.50% |
| C000183900 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.70% |
| C000183900 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000183900 [Member] | Preferred Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000183903 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000183903 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000183903 [Member] | Novartis AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000183903 [Member] | LVMH Moet Hennessy Louis Vuitton SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183903 [Member] | TotalEnergies SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000183903 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000183903 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000183903 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000183903 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000183903 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000183903 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000183903 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000183903 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000183904 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000183904 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000183904 [Member] | Novartis AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000183904 [Member] | LVMH Moet Hennessy Louis Vuitton SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183904 [Member] | TotalEnergies SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000183904 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000183904 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000183904 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000183904 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000183904 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000183904 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000183904 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000183904 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000183905 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000183905 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000183905 [Member] | Novartis AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000183905 [Member] | LVMH Moet Hennessy Louis Vuitton SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183905 [Member] | TotalEnergies SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000183905 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000183905 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000183905 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000183905 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000183905 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000183905 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000183905 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000183905 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000183906 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000183906 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000183906 [Member] | Novartis AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000183906 [Member] | LVMH Moet Hennessy Louis Vuitton SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183906 [Member] | TotalEnergies SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000183906 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000183906 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000183906 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000183906 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000183906 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000183906 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000183906 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000183906 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000183907 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000183907 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000183907 [Member] | Novartis AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000183907 [Member] | LVMH Moet Hennessy Louis Vuitton SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183907 [Member] | TotalEnergies SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000183907 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000183907 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000183907 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000183907 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000183907 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000183907 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000183907 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000183907 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000183909 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000183909 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000183909 [Member] | Novartis AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000183909 [Member] | LVMH Moet Hennessy Louis Vuitton SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183909 [Member] | TotalEnergies SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000183909 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000183909 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000183909 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000183909 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000183909 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000183909 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000183909 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000183909 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000183910 [Member] | ASML Holding NV [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000183910 [Member] | Novo Nordisk A S Class B [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000183910 [Member] | Novartis AG [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000183910 [Member] | LVMH Moet Hennessy Louis Vuitton SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000183910 [Member] | TotalEnergies SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000183910 [Member] | UNITED KINGDOM | |
| Holdings [Line Items] | |
| Percent of Total Investments | 15.10% |
| C000183910 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.10% |
| C000183910 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 10.60% |
| C000183910 [Member] | DENMARK | |
| Holdings [Line Items] | |
| Percent of Total Investments | 9.60% |
| C000183910 [Member] | GERMANY | |
| Holdings [Line Items] | |
| Percent of Total Investments | 18.70% |
| C000183910 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.10% |
| C000183910 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000183910 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000219909 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000219909 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000219909 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000219909 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219909 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219909 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000219909 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000219909 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000219909 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000219909 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000219909 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000219909 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000219909 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000219911 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000219911 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000219911 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000219911 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219911 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219911 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000219911 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000219911 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000219911 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000219911 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000219911 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000219911 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000219911 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000219910 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000219910 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000219910 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000219910 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219910 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219910 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000219910 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000219910 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000219910 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000219910 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000219910 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000219910 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000219910 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000219912 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000219912 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000219912 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000219912 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219912 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219912 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000219912 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000219912 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000219912 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000219912 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000219912 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000219912 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000219912 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000219908 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000219908 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000219908 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000219908 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219908 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219908 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000219908 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000219908 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000219908 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000219908 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000219908 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000219908 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000219908 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000225293 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000225293 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000225293 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000225293 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000225293 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000225293 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000225293 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000225293 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000225293 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000225293 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000225293 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000225293 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000225293 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000219906 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000219906 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000219906 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000219906 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219906 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219906 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000219906 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000219906 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000219906 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000219906 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000219906 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000219906 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000219906 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000219907 [Member] | Microsoft Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.70% |
| C000219907 [Member] | NVIDIA Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000219907 [Member] | Schneider Electric SE [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000219907 [Member] | Wabtec Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000219907 [Member] | Progressive Corp The [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000219907 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 59.40% |
| C000219907 [Member] | FRANCE | |
| Holdings [Line Items] | |
| Percent of Total Investments | 7.90% |
| C000219907 [Member] | CANADA | |
| Holdings [Line Items] | |
| Percent of Total Investments | 6.30% |
| C000219907 [Member] | NETHERLANDS | |
| Holdings [Line Items] | |
| Percent of Total Investments | 4.20% |
| C000219907 [Member] | JAPAN | |
| Holdings [Line Items] | |
| Percent of Total Investments | 5.20% |
| C000219907 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99% |
| C000219907 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.50% |
| C000219907 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.50%) |
| C000240132 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000240132 [Member] | UnitedHealth Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000240132 [Member] | AbbVie Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000240132 [Member] | International Business Machines Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000240132 [Member] | CME Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000240132 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000240132 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000240132 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000240132 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000240130 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000240130 [Member] | UnitedHealth Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000240130 [Member] | AbbVie Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000240130 [Member] | International Business Machines Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000240130 [Member] | CME Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000240130 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000240130 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000240130 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000240130 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
| C000240131 [Member] | JPMorgan Chase And Co [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.40% |
| C000240131 [Member] | UnitedHealth Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.20% |
| C000240131 [Member] | AbbVie Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.10% |
| C000240131 [Member] | International Business Machines Corp [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000240131 [Member] | CME Group Inc [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000240131 [Member] | UNITED STATES | |
| Holdings [Line Items] | |
| Percent of Total Investments | 100% |
| C000240131 [Member] | Common Stock [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 99.90% |
| C000240131 [Member] | Investment Companies [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000240131 [Member] | Other Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | (0.10%) |
