| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Janus Aspen Series |
| Entity Central Index Key | 0000906185 |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended |
| Jun. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | Janus Aspen Series |
| Entity Central Index Key | 0000906185 |
| Document Period End Date | Jun. 30, 2024 |
| C000028719 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Research Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JAGRX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Research Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Research Portfolio $ 0.60 % |
| Expenses Paid, Amount | $ 34 |
| Expense Ratio, Percent | 0.60% |
| Net Assets | $ 709,000,000 |
| Holdings Count | Holding | 79 |
| Investment Company Portfolio Turnover | 20% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.9 Microsoft Corp 12.2 Apple Inc 6.5 Alphabet Inc - Class C 6.2 Amazon.com Inc 6.1 Asset Allocation (% of net assets) Common Stocks 100.0 ) Investment Companies 0.0 ) Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.9 Microsoft Corp 12.2 Apple Inc 6.5 Alphabet Inc - Class C 6.2 Amazon.com Inc 6.1 |
| C000028718 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Research Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Research Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Research Portfolio $ 0.85 % |
| Expenses Paid, Amount | $ 48 |
| Expense Ratio, Percent | 0.85% |
| Net Assets | $ 709,000,000 |
| Holdings Count | Holding | 79 |
| Investment Company Portfolio Turnover | 20% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.9 Microsoft Corp 12.2 Apple Inc 6.5 Alphabet Inc - Class C 6.2 Amazon.com Inc 6.1 Asset Allocation (% of net assets) Common Stocks 100.0 ) Investment Companies 0.0 ) Other (0.0 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.9 Microsoft Corp 12.2 Apple Inc 6.5 Alphabet Inc - Class C 6.2 Amazon.com Inc 6.1 |
| C000028747 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Overseas Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JAIGX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Overseas Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Overseas Portfolio $ 0.89 % |
| Expenses Paid, Amount | $ 46 |
| Expense Ratio, Percent | 0.89% |
| Net Assets | $ 695,000,000 |
| Holdings Count | Holding | 51 |
| Investment Company Portfolio Turnover | 22% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 7.2 BAE Systems PLC 5.0 Teck Resources Ltd 4.1 ASML Holding NV 4.0 Dai-ichi Life Holdings Inc 3.8 Asset Allocation (% of net assets) Common Stocks 96.8 ) Preferred Stocks 1.7 ) Investment Companies 1.6 ) Investments Purchased with Cash Collateral from Securities Lending 0.1 ) Rights 0.0 ) Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 7.2 BAE Systems PLC 5.0 Teck Resources Ltd 4.1 ASML Holding NV 4.0 Dai-ichi Life Holdings Inc 3.8 |
| C000028745 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Overseas Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Overseas Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Overseas Portfolio $ 1.13 % |
| Expenses Paid, Amount | $ 59 |
| Expense Ratio, Percent | 1.13% |
| Net Assets | $ 695,000,000 |
| Holdings Count | Holding | 51 |
| Investment Company Portfolio Turnover | 22% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 7.2 BAE Systems PLC 5.0 Teck Resources Ltd 4.1 ASML Holding NV 4.0 Dai-ichi Life Holdings Inc 3.8 Asset Allocation (% of net assets) Common Stocks 96.8 ) Preferred Stocks 1.7 ) Investment Companies 1.6 ) Investments Purchased with Cash Collateral from Securities Lending 0.1 ) Rights 0.0 ) Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Taiwan Semiconductor Manufacturing Co Ltd 7.2 BAE Systems PLC 5.0 Teck Resources Ltd 4.1 ASML Holding NV 4.0 Dai-ichi Life Holdings Inc 3.8 |
| C000028730 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Global Research Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JAWGX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Global Research Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Global Research Portfolio $ 0.70 % |
| Expenses Paid, Amount | $ 38 |
| Expense Ratio, Percent | 0.70% |
| Net Assets | $ 913,000,000 |
| Holdings Count | Holding | 113 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.1 NVIDIA Corp 5.7 Alphabet Inc - Class C 4.5 Amazon.com Inc 3.1 Apple Inc 3.1 Asset Allocation (% of net assets) Common Stocks 98.4 ) Preferred Stocks 1.0 ) Investment Companies 0.7 ) Private Placements 0.0 ) Rights 0.0 ) Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.1 NVIDIA Corp 5.7 Alphabet Inc - Class C 4.5 Amazon.com Inc 3.1 Apple Inc 3.1 |
| C000028728 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Global Research Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Global Sustainable Equity Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Global Research Portfolio $ 0.95 % |
| Expenses Paid, Amount | $ 51 |
| Expense Ratio, Percent | 0.95% |
| Net Assets | $ 913,000,000 |
| Holdings Count | Holding | 113 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.1 NVIDIA Corp 5.7 Alphabet Inc - Class C 4.5 Amazon.com Inc 3.1 Apple Inc 3.1 Asset Allocation (% of net assets) Common Stocks 98.4 ) Preferred Stocks 1.0 ) Investment Companies 0.7 ) Private Placements 0.0 ) Rights 0.0 ) Other (0.1 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.1 NVIDIA Corp 5.7 Alphabet Inc - Class C 4.5 Amazon.com Inc 3.1 Apple Inc 3.1 |
| C000028742 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Global Technology and Innovation Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JGLTX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Global Technology and Innovation Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Global Technology and Innovation Portfolio $ 0.72 % |
| Expenses Paid, Amount | $ 41 |
| Expense Ratio, Percent | 0.72% |
| Net Assets | $ 1,155,000,000 |
| Holdings Count | Holding | 70 |
| Investment Company Portfolio Turnover | 17% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.4 Microsoft Corp 10.3 Taiwan Semiconductor Manufacturing Co Ltd 5.8 Meta Platforms Inc - Class A 4.9 Apple Inc 4.8 Asset Allocation (% of net assets) Common Stocks 97.2 Investment Companies 1.3 Private Placements 0.6 Warrants 0.0 Other 0.9 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.4 Microsoft Corp 10.3 Taiwan Semiconductor Manufacturing Co Ltd 5.8 Meta Platforms Inc - Class A 4.9 Apple Inc 4.8 |
| C000028740 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Global Technology and Innovation Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Global Technology and Innovation Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Global Technology and Innovation Portfolio $ 0.96 % |
| Expenses Paid, Amount | $ 54 |
| Expense Ratio, Percent | 0.96% |
| Net Assets | $ 1,155,000,000 |
| Holdings Count | Holding | 70 |
| Investment Company Portfolio Turnover | 17% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.4 Microsoft Corp 10.3 Taiwan Semiconductor Manufacturing Co Ltd 5.8 Meta Platforms Inc - Class A 4.9 Apple Inc 4.8 Asset Allocation (% of net assets) Common Stocks 97.2 Investment Companies 1.3 Private Placements 0.6 Warrants 0.0 Other 0.9 Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 12.4 Microsoft Corp 10.3 Taiwan Semiconductor Manufacturing Co Ltd 5.8 Meta Platforms Inc - Class A 4.9 Apple Inc 4.8 |
| C000028721 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Enterprise Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JAAGX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Enterprise Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Enterprise Portfolio $ 0.71 % |
| Expenses Paid, Amount | $ 36 |
| Expense Ratio, Percent | 0.71% |
| Net Assets | $ 1,615,000,000 |
| Holdings Count | Holding | 80 |
| Investment Company Portfolio Turnover | 7% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.9 GoDaddy Inc 4.0 Boston Scientific Corp 3.6 Intact Financial Corp 2.8 SS&C Technologies Holdings Inc 2.7 Asset Allocation (% of net assets) Common Stocks 96.9 ) Investment Companies 3.4 ) Investments Purchased with Cash Collateral from Securities Lending 0.6 ) Other (0.9 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.9 GoDaddy Inc 4.0 Boston Scientific Corp 3.6 Intact Financial Corp 2.8 SS&C Technologies Holdings Inc 2.7 |
| C000028720 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Enterprise Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Enterprise Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Enterprise Portfolio $ 0.96 % |
| Expenses Paid, Amount | $ 49 |
| Expense Ratio, Percent | 0.96% |
| Net Assets | $ 1,615,000,000 |
| Holdings Count | Holding | 80 |
| Investment Company Portfolio Turnover | 7% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.9 GoDaddy Inc 4.0 Boston Scientific Corp 3.6 Intact Financial Corp 2.8 SS&C Technologies Holdings Inc 2.7 Asset Allocation (% of net assets) Common Stocks 96.9 ) Investment Companies 3.4 ) Investments Purchased with Cash Collateral from Securities Lending 0.6 ) Other (0.9 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Constellation Software Inc/Canada 4.9 GoDaddy Inc 4.0 Boston Scientific Corp 3.6 Intact Financial Corp 2.8 SS&C Technologies Holdings Inc 2.7 |
| C000028734 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Flexible Bond Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JAFLX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Flexible Bond Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Flexible Bond Portfolio $ 0.57 % |
| Expenses Paid, Amount | $ 28 |
| Expense Ratio, Percent | 0.57% |
| Net Assets | $ 608,000,000 |
| Holdings Count | Holding | 664 |
| Investment Company Portfolio Turnover | 97% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % Weighted average maturity 7.3 Years Effective duration 6.4 Years |
| Holdings [Text Block] | What did the Portfolio invest in? Asset Allocation (% of net assets) Corporate Bonds 34.9 ) Asset-Backed/Commercial Mortgage-Backed Securities 27.1 ) Mortgage-Backed Securities 24.4 ) United States Treasury Notes/Bonds 10.4 ) Investment Companies 5.6 ) Investments Purchased with Cash Collateral from Securities Lending 2.6 ) Bank Loans and Mezzanine Loans 1.9 ) Other (6.9 ) Ratings Summary (% of net assets) † AAA 2.2 AA 35.6 A 8.6 BBB 22.5 BB 7.7 B 0.9 Not Rated 22.2 Other 0.3 Top 5 Areas of Investment (% of net assets) † |
| Credit Ratings Selection [Text Block] | Credit ratings provided by Standard & Poor's ("S&P"), an independent credit rating agency. Credit ratings range from AAA (highest) to D (lowest) based on S&P's measures. Further information on S&P's rating methodology may be found at www.standardandpoors.com. Other rating agencies may rate the same securities differently. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. "Not Rated" securities are not rated by S&P, but may be rated by other rating agencies and do not necessarily indicate low quality. |
| Largest Holdings [Text Block] | Top 5 Areas of Investment (% of net assets) |
| C000028733 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Flexible Bond Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Flexible Bond Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Flexible Bond Portfolio $ 0.82 % |
| Expenses Paid, Amount | $ 41 |
| Expense Ratio, Percent | 0.82% |
| Net Assets | $ 608,000,000 |
| Holdings Count | Holding | 664 |
| Investment Company Portfolio Turnover | 97% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % Weighted average maturity 7.3 Years Effective duration 6.4 Years |
| Holdings [Text Block] | What did the Portfolio invest in? Asset Allocation (% of net assets) Corporate Bonds 34.9 ) Asset-Backed/Commercial Mortgage-Backed Securities 27.1 ) Mortgage-Backed Securities 24.4 ) United States Treasury Notes/Bonds 10.4 ) Investment Companies 5.6 ) Investments Purchased with Cash Collateral from Securities Lending 2.6 ) Bank Loans and Mezzanine Loans 1.9 ) Other (6.9 ) Ratings Summary (% of net assets) † AAA 2.2 AA 35.6 A 8.6 BBB 22.5 BB 7.7 B 0.9 Not Rated 22.2 Other 0.3 Top 5 Areas of Investment (% of net assets) † |
| Credit Ratings Selection [Text Block] | Credit ratings provided by Standard & Poor's ("S&P"), an independent credit rating agency. Credit ratings range from AAA (highest) to D (lowest) based on S&P's measures. Further information on S&P's rating methodology may be found at www.standardandpoors.com. Other rating agencies may rate the same securities differently. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. "Not Rated" securities are not rated by S&P, but may be rated by other rating agencies and do not necessarily indicate low quality. |
| Largest Holdings [Text Block] | Top 5 Areas of Investment (% of net assets) |
| C000028717 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Balanced Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JABLX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Balanced Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Balanced Portfolio $ 0.61 % |
| Expenses Paid, Amount | $ 32 |
| Expense Ratio, Percent | 0.61% |
| Net Assets | $ 8,986,000,000 |
| Holdings Count | Holding | 792 |
| Investment Company Portfolio Turnover | 40% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.4 NVIDIA Corp 5.4 Apple Inc 3.4 Alphabet Inc - Class C 3.1 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 63.0 ) Corporate Bonds 13.1 ) Asset-Backed/Commercial Mortgage-Backed Securities 9.8 ) Mortgage-Backed Securities 9.3 ) United States Treasury Notes/Bonds 4.0 ) Investment Companies 2.0 ) Bank Loans and Mezzanine Loans 0.4 ) Other (1.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.4 NVIDIA Corp 5.4 Apple Inc 3.4 Alphabet Inc - Class C 3.1 Amazon.com Inc 2.5 |
| C000028716 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Balanced Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Balanced Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Balanced Portfolio $ 0.86 % |
| Expenses Paid, Amount | $ 45 |
| Expense Ratio, Percent | 0.86% |
| Net Assets | $ 8,986,000,000 |
| Holdings Count | Holding | 792 |
| Investment Company Portfolio Turnover | 40% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.4 NVIDIA Corp 5.4 Apple Inc 3.4 Alphabet Inc - Class C 3.1 Amazon.com Inc 2.5 Asset Allocation (% of net assets) Common Stocks 63.0 ) Corporate Bonds 13.1 ) Asset-Backed/Commercial Mortgage-Backed Securities 9.8 ) Mortgage-Backed Securities 9.3 ) United States Treasury Notes/Bonds 4.0 ) Investment Companies 2.0 ) Bank Loans and Mezzanine Loans 0.4 ) Other (1.6 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 6.4 NVIDIA Corp 5.4 Apple Inc 3.4 Alphabet Inc - Class C 3.1 Amazon.com Inc 2.5 |
| C000028723 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Mid Cap Value Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JAMVX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Mid Cap Value Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Mid Cap Value Portfolio $ 0.90 % |
| Expenses Paid, Amount | $ 46 |
| Expense Ratio, Percent | 0.90% |
| Net Assets | $ 113,000,000 |
| Holdings Count | Holding | 71 |
| Investment Company Portfolio Turnover | 26% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Casey's General Stores Inc 2.9 Entergy Corp 2.5 Freeport-McMoRan Inc 2.4 Alliant Energy Corp 2.4 Fidelity National Information Services Inc 2.3 Asset Allocation (% of net assets) Common Stocks 98.8 ) Repurchase Agreements 1.4 ) Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Casey's General Stores Inc 2.9 Entergy Corp 2.5 Freeport-McMoRan Inc 2.4 Alliant Energy Corp 2.4 Fidelity National Information Services Inc 2.3 |
| C000028722 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Mid Cap Value Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Mid Cap Value Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Mid Cap Value Portfolio $ 1.15 % |
| Expenses Paid, Amount | $ 59 |
| Expense Ratio, Percent | 1.15% |
| Net Assets | $ 113,000,000 |
| Holdings Count | Holding | 71 |
| Investment Company Portfolio Turnover | 26% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Casey's General Stores Inc 2.9 Entergy Corp 2.5 Freeport-McMoRan Inc 2.4 Alliant Energy Corp 2.4 Fidelity National Information Services Inc 2.3 Asset Allocation (% of net assets) Common Stocks 98.8 ) Repurchase Agreements 1.4 ) Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Casey's General Stores Inc 2.9 Entergy Corp 2.5 Freeport-McMoRan Inc 2.4 Alliant Energy Corp 2.4 Fidelity National Information Services Inc 2.3 |
| C000028737 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Forty Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JACAX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Forty Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Forty Portfolio $ 0.57 % |
| Expenses Paid, Amount | $ 31 |
| Expense Ratio, Percent | 0.57% |
| Net Assets | $ 1,172,000,000 |
| Holdings Count | Holding | 38 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 11.5 NVIDIA Corp 8.4 Amazon.com Inc 6.7 Apple Inc 6.0 Meta Platforms Inc - Class A 5.7 Asset Allocation (% of net assets) Common Stocks 99.5 ) Investment Companies 1.0 ) Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 11.5 NVIDIA Corp 8.4 Amazon.com Inc 6.7 Apple Inc 6.0 Meta Platforms Inc - Class A 5.7 |
| C000028736 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Forty Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Forty Portfolio (the "Portfolio") for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Forty Portfolio $ 0.82 % |
| Expenses Paid, Amount | $ 45 |
| Expense Ratio, Percent | 0.82% |
| Net Assets | $ 1,172,000,000 |
| Holdings Count | Holding | 38 |
| Investment Company Portfolio Turnover | 18% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) Microsoft Corp 11.5 NVIDIA Corp 8.4 Amazon.com Inc 6.7 Apple Inc 6.0 Meta Platforms Inc - Class A 5.7 Asset Allocation (% of net assets) Common Stocks 99.5 ) Investment Companies 1.0 ) Other (0.5 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) Microsoft Corp 11.5 NVIDIA Corp 8.4 Amazon.com Inc 6.7 Apple Inc 6.0 Meta Platforms Inc - Class A 5.7 |
| C000233310 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Global Sustainable Equity Portfolio |
| Class Name | Institutional Shares |
| Trading Symbol | JHISX |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Global Sustainable Equity Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Global Sustainable Equity Portfolio $ 0.86 % |
| Expenses Paid, Amount | $ 46 |
| Expense Ratio, Percent | 0.86% |
| Net Assets | $ 11,000,000 |
| Holdings Count | Holding | 53 |
| Investment Company Portfolio Turnover | 10% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 7.6 Microsoft Corp 7.2 Wabtec Corp 4.1 Schneider Electric SE 3.2 Xylem Inc/NY 3.2 Asset Allocation (% of net assets) Common Stocks 97.6 ) Investment Companies 2.6 ) Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 7.6 Microsoft Corp 7.2 Wabtec Corp 4.1 Schneider Electric SE 3.2 Xylem Inc/NY 3.2 |
| C000233309 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Janus Henderson VIT Global Sustainable Equity Portfolio |
| Class Name | Service Shares |
| No Trading Symbol Flag | true |
| Annual or Semi-Annual Statement [Text Block] | This semi-annual shareholder report contains important information about the Janus Henderson VIT Global Sustainable Equity Portfolio (the "Portfolio”) for the period of January 1, 2024 to June 30, 2024. |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report |
| Additional Information [Text Block] | You can find additional information about the Portfolio at janushenderson.com/VIT |
| Additional Information Phone Number | 1-877-335-2687 |
| Additional Information Website | janushenderson.com/VIT |
| Expenses [Text Block] | What were the costs for the (Based on a hypothetical $10,000 investment) Portfolio (Class) Cost of a Cost paid as a percentage Janus Henderson VIT Global Sustainable Equity Portfolio $ 0.93 % |
| Expenses Paid, Amount | $ 49 |
| Expense Ratio, Percent | 0.93% |
| Net Assets | $ 11,000,000 |
| Holdings Count | Holding | 53 |
| Investment Company Portfolio Turnover | 10% |
| Additional Fund Statistics [Text Block] | Key Portfolio Statistics Net assets $ % Number of portfolio holdings $ % Portfolio turnover rate $ % |
| Holdings [Text Block] | What did the Portfolio invest in? 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 7.6 Microsoft Corp 7.2 Wabtec Corp 4.1 Schneider Electric SE 3.2 Xylem Inc/NY 3.2 Asset Allocation (% of net assets) Common Stocks 97.6 ) Investment Companies 2.6 ) Other (0.2 ) Top Country Allocations (% of investments) |
| Largest Holdings [Text Block] | 5 Largest Equity Holdings (% of net assets) NVIDIA Corp 7.6 Microsoft Corp 7.2 Wabtec Corp 4.1 Schneider Electric SE 3.2 Xylem Inc/NY 3.2 |
| Shareholder Report, Holdings (Details) | Jun. 30, 2024 | |
| C000028719 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.90% | |
| C000028719 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.20% | |
| C000028719 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.50% | |
| C000028719 [Member] | Alphabet Inc Class C [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.20% | |
| C000028719 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.10% | |
| C000028719 [Member] | BELGIUM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.20% | |
| C000028719 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.60% | |
| C000028719 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000028719 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.80% | |
| C000028719 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 98.10% | |
| C000028719 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| C000028719 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.00%) | |
| C000028719 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028718 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.90% | |
| C000028718 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.20% | |
| C000028718 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.50% | |
| C000028718 [Member] | Alphabet Inc Class C [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.20% | |
| C000028718 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.10% | |
| C000028718 [Member] | BELGIUM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.20% | |
| C000028718 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.60% | |
| C000028718 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000028718 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.80% | |
| C000028718 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 98.10% | |
| C000028718 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 100% | |
| C000028718 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.00%) | |
| C000028718 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028747 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.20% | |
| C000028747 [Member] | BAE Systems PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5% | |
| C000028747 [Member] | Teck Resources Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.10% | |
| C000028747 [Member] | ASML Holding NV [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4% | |
| C000028747 [Member] | Dai ichi Life Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.80% | |
| C000028747 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000028747 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.80% | |
| C000028747 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.20% | |
| C000028747 [Member] | JAPAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15% | |
| C000028747 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000028747 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 96.80% | |
| C000028747 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| C000028747 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.60% | |
| C000028747 [Member] | Rights [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028747 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| C000028747 [Member] | Preferred Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.70% | |
| C000028745 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.20% | |
| C000028745 [Member] | BAE Systems PLC [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5% | |
| C000028745 [Member] | Teck Resources Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.10% | |
| C000028745 [Member] | ASML Holding NV [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4% | |
| C000028745 [Member] | Dai ichi Life Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.80% | |
| C000028745 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000028745 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 16.80% | |
| C000028745 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 9.20% | |
| C000028745 [Member] | JAPAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 15% | |
| C000028745 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 7.20% | |
| C000028745 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 96.80% | |
| C000028745 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| C000028745 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.60% | |
| C000028745 [Member] | Rights [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028745 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.10% | |
| C000028745 [Member] | Preferred Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.70% | |
| C000028730 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.70% | |
| C000028730 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.10% | |
| C000028730 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.10% | |
| C000028730 [Member] | Alphabet Inc Class C [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.50% | |
| C000028730 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.10% | |
| C000028730 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | |
| C000028730 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.90% | |
| C000028730 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.50% | |
| C000028730 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 73% | |
| C000028730 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.20% | |
| C000028730 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 98.40% | |
| C000028730 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.10%) | |
| C000028730 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.70% | |
| C000028730 [Member] | Rights [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028730 [Member] | Preferred Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1% | |
| C000028730 [Member] | Private Placement [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028728 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.70% | |
| C000028728 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.10% | |
| C000028728 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.10% | |
| C000028728 [Member] | Alphabet Inc Class C [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.50% | |
| C000028728 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.10% | |
| C000028728 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.60% | |
| C000028728 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.90% | |
| C000028728 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3.50% | |
| C000028728 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 73% | |
| C000028728 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.20% | |
| C000028728 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 98.40% | |
| C000028728 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.10%) | |
| C000028728 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.70% | |
| C000028728 [Member] | Rights [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028728 [Member] | Preferred Stocks [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1% | |
| C000028728 [Member] | Private Placement [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028742 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.40% | |
| C000028742 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.30% | |
| C000028742 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.80% | |
| C000028742 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.80% | |
| C000028742 [Member] | Meta Platforms Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.90% | |
| C000028742 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | |
| C000028742 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.10% | |
| C000028742 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 83.10% | |
| C000028742 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.90% | |
| C000028742 [Member] | ARGENTINA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000028742 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 97.20% | |
| C000028742 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.90% | |
| C000028742 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.30% | |
| C000028742 [Member] | Private Placement [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.60% | |
| C000028742 [Member] | Warrant [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028740 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 12.40% | |
| C000028740 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.30% | |
| C000028740 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.80% | |
| C000028740 [Member] | Taiwan Semiconductor Manufacturing Co Ltd [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.80% | |
| C000028740 [Member] | Meta Platforms Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.90% | |
| C000028740 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.10% | |
| C000028740 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.10% | |
| C000028740 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 83.10% | |
| C000028740 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.90% | |
| C000028740 [Member] | ARGENTINA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000028740 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 97.20% | |
| C000028740 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.90% | |
| C000028740 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.30% | |
| C000028740 [Member] | Private Placement [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.60% | |
| C000028740 [Member] | Warrant [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0% | |
| C000028721 [Member] | Constellation Software Inc Canada [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.90% | |
| C000028721 [Member] | GoDaddy Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4% | |
| C000028721 [Member] | Boston Scientific Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.60% | |
| C000028721 [Member] | Intact Financial Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.80% | |
| C000028721 [Member] | SS And C Technologies Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.70% | |
| C000028721 [Member] | BELGIUM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.80% | |
| C000028721 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.20% | |
| C000028721 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000028721 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 84.50% | |
| C000028721 [Member] | IRELAND | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.80% | |
| C000028721 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 96.90% | |
| C000028721 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.90%) | |
| C000028721 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.40% | |
| C000028721 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.60% | |
| C000028720 [Member] | Constellation Software Inc Canada [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.90% | |
| C000028720 [Member] | GoDaddy Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4% | |
| C000028720 [Member] | Boston Scientific Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.60% | |
| C000028720 [Member] | Intact Financial Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.80% | |
| C000028720 [Member] | SS And C Technologies Holdings Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.70% | |
| C000028720 [Member] | BELGIUM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.80% | |
| C000028720 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 11.20% | |
| C000028720 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.80% | |
| C000028720 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 84.50% | |
| C000028720 [Member] | IRELAND | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.80% | |
| C000028720 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 96.90% | |
| C000028720 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.90%) | |
| C000028720 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.40% | |
| C000028720 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.60% | |
| C000028734 [Member] | Asset Backed Commercial Mortgage Backed Securities Top holding [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.10% | |
| C000028734 [Member] | United States Treasury Notes Bonds Top holding [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.40% | |
| C000028734 [Member] | Consumer Non Cyclical [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.80% | |
| C000028734 [Member] | Mortgage Backed Securities Top holding [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.40% | |
| C000028734 [Member] | Money Market Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.60% | |
| C000028734 [Member] | Not Rated [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.20% | [1] |
| C000028734 [Member] | Other [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.30% | [1] |
| C000028734 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (6.90%) | |
| C000028734 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.60% | |
| C000028734 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.60% | |
| C000028734 [Member] | Bank Loans and Mezzanine Loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.90% | |
| C000028734 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.10% | |
| C000028734 [Member] | United States Treasury Notes Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.40% | |
| C000028734 [Member] | Collateralized Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.40% | |
| C000028734 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.90% | |
| C000028733 [Member] | Asset Backed Commercial Mortgage Backed Securities Top holding [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.10% | |
| C000028733 [Member] | United States Treasury Notes Bonds Top holding [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.40% | |
| C000028733 [Member] | Consumer Non Cyclical [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.80% | |
| C000028733 [Member] | Mortgage Backed Securities Top holding [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.40% | |
| C000028733 [Member] | Money Market Funds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.60% | |
| C000028733 [Member] | Not Rated [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 22.20% | [2] |
| C000028733 [Member] | Other [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.30% | [2] |
| C000028733 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (6.90%) | |
| C000028733 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.60% | |
| C000028733 [Member] | Investments Purchased with Cash Collateral from Securities Lending [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.60% | |
| C000028733 [Member] | Bank Loans and Mezzanine Loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.90% | |
| C000028733 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 27.10% | |
| C000028733 [Member] | United States Treasury Notes Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 10.40% | |
| C000028733 [Member] | Collateralized Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 24.40% | |
| C000028733 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 34.90% | |
| C000028717 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.40% | |
| C000028717 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.40% | |
| C000028717 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.40% | |
| C000028717 [Member] | Alphabet Inc Class C [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.10% | |
| C000028717 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.50% | |
| C000028717 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000028717 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000028717 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 98.70% | |
| C000028717 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.20% | |
| C000028717 [Member] | SWITZERLAND | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.10% | |
| C000028717 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 63% | |
| C000028717 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (1.60%) | |
| C000028717 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2% | |
| C000028717 [Member] | Bank Loans and Mezzanine Loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.40% | |
| C000028717 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.80% | |
| C000028717 [Member] | United States Treasury Notes Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4% | |
| C000028717 [Member] | Collateralized Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.30% | |
| C000028717 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.10% | |
| C000028716 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.40% | |
| C000028716 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.40% | |
| C000028716 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.40% | |
| C000028716 [Member] | Alphabet Inc Class C [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.10% | |
| C000028716 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.50% | |
| C000028716 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000028716 [Member] | UNITED KINGDOM | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.30% | |
| C000028716 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 98.70% | |
| C000028716 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.20% | |
| C000028716 [Member] | SWITZERLAND | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 0.10% | |
| C000028716 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 63% | |
| C000028716 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (1.60%) | |
| C000028716 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2% | |
| C000028716 [Member] | Bank Loans and Mezzanine Loans [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 0.40% | |
| C000028716 [Member] | Asset Backed Commercial Mortgage Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.80% | |
| C000028716 [Member] | United States Treasury Notes Bonds [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4% | |
| C000028716 [Member] | Collateralized Mortgage-Backed Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 9.30% | |
| C000028716 [Member] | Corporate Bond Securities [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 13.10% | |
| C000028723 [Member] | Casey s General Stores Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.90% | |
| C000028723 [Member] | Entergy Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.50% | |
| C000028723 [Member] | Freeport McMoRan Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.40% | |
| C000028723 [Member] | Alliant Energy Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.40% | |
| C000028723 [Member] | Fidelity National Information Services Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.30% | |
| C000028723 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000028723 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 99% | |
| C000028723 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 98.80% | |
| C000028723 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| C000028723 [Member] | Repurchase Agreements [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.40% | |
| C000028722 [Member] | Casey s General Stores Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.90% | |
| C000028722 [Member] | Entergy Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.50% | |
| C000028722 [Member] | Freeport McMoRan Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.40% | |
| C000028722 [Member] | Alliant Energy Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.40% | |
| C000028722 [Member] | Fidelity National Information Services Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.30% | |
| C000028722 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1% | |
| C000028722 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 99% | |
| C000028722 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 98.80% | |
| C000028722 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| C000028722 [Member] | Repurchase Agreements [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1.40% | |
| C000028737 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.40% | |
| C000028737 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.50% | |
| C000028737 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| C000028737 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.70% | |
| C000028737 [Member] | Meta Platforms Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.70% | |
| C000028737 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000028737 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 90.30% | |
| C000028737 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000028737 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000028737 [Member] | ARGENTINA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | |
| C000028737 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 99.50% | |
| C000028737 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.50%) | |
| C000028737 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1% | |
| C000028736 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 8.40% | |
| C000028736 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 11.50% | |
| C000028736 [Member] | Apple Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6% | |
| C000028736 [Member] | Amazon com Inc [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 6.70% | |
| C000028736 [Member] | Meta Platforms Inc Class A [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 5.70% | |
| C000028736 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 3% | |
| C000028736 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 90.30% | |
| C000028736 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.60% | |
| C000028736 [Member] | TAIWAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.50% | |
| C000028736 [Member] | ARGENTINA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 1.70% | |
| C000028736 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 99.50% | |
| C000028736 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.50%) | |
| C000028736 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 1% | |
| C000233310 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.60% | |
| C000233310 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.20% | |
| C000233310 [Member] | Wabtec Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.10% | |
| C000233310 [Member] | Schneider Electric SE [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.20% | |
| C000233310 [Member] | Xylem Inc NY [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.20% | |
| C000233310 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.80% | |
| C000233310 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.60% | |
| C000233310 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 67.90% | |
| C000233310 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.20% | |
| C000233310 [Member] | JAPAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.80% | |
| C000233310 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 97.60% | |
| C000233310 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| C000233310 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.60% | |
| C000233309 [Member] | NVIDIA Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.60% | |
| C000233309 [Member] | Microsoft Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 7.20% | |
| C000233309 [Member] | Wabtec Corp [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 4.10% | |
| C000233309 [Member] | Schneider Electric SE [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.20% | |
| C000233309 [Member] | Xylem Inc NY [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 3.20% | |
| C000233309 [Member] | CANADA | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.80% | |
| C000233309 [Member] | NETHERLANDS | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.60% | |
| C000233309 [Member] | UNITED STATES | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 67.90% | |
| C000233309 [Member] | FRANCE | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 5.20% | |
| C000233309 [Member] | JAPAN | ||
| Holdings [Line Items] | ||
| Percent of Total Investments | 4.80% | |
| C000233309 [Member] | Common Stock [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 97.60% | |
| C000233309 [Member] | Other Investments [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | (0.20%) | |
| C000233309 [Member] | Investment Companies [Member] | ||
| Holdings [Line Items] | ||
| Percent of Net Asset Value | 2.60% | |
| [1]Credit ratings provided by Standard & Poor's ("S&P"), an independent credit rating agency. Credit ratings range from AAA (highest) to D (lowest) based on S&P's measures. Further information on S&P's rating methodology may be found at www.standardandpoors.com. Other rating agencies may rate the same securities differently. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. "Not Rated" securities are not rated by S&P, but may be rated by other rating agencies and do not necessarily indicate low quality.[2]Credit ratings provided by Standard & Poor's ("S&P"), an independent credit rating agency. Credit ratings range from AAA (highest) to D (lowest) based on S&P's measures. Further information on S&P's rating methodology may be found at www.standardandpoors.com. Other rating agencies may rate the same securities differently. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. "Not Rated" securities are not rated by S&P, but may be rated by other rating agencies and do not necessarily indicate low quality. | ||
| Label | Element | Value | |
| C000028733 [Member] | Standard & Poor's, B Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 0.90% | [1] |
| C000028733 [Member] | Standard & Poor's, BB Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 7.70% | [1] |
| C000028733 [Member] | Standard & Poor's, A Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 8.60% | [1] |
| C000028733 [Member] | Standard & Poor's, BBB Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 22.50% | [1] |
| C000028733 [Member] | Standard & Poor's, AA Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 35.60% | [1] |
| C000028733 [Member] | Standard & Poor's, AAA Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 2.20% | [1] |
| C000028734 [Member] | Standard & Poor's, B Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 0.90% | [2] |
| C000028734 [Member] | Standard & Poor's, BB Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 7.70% | [2] |
| C000028734 [Member] | Standard & Poor's, A Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 8.60% | [2] |
| C000028734 [Member] | Standard & Poor's, BBB Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 22.50% | [2] |
| C000028734 [Member] | Standard & Poor's, AA Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 35.60% | [2] |
| C000028734 [Member] | Standard & Poor's, AAA Rating [Member] | |||
| Percent of Net Asset Value | oef_PctOfNav | 2.20% | [2] |
| [1]Credit ratings provided by Standard & Poor's ("S&P"), an independent credit rating agency. Credit ratings range from AAA (highest) to D (lowest) based on S&P's measures. Further information on S&P's rating methodology may be found at www.standardandpoors.com. Other rating agencies may rate the same securities differently. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. "Not Rated" securities are not rated by S&P, but may be rated by other rating agencies and do not necessarily indicate low quality.[2]Credit ratings provided by Standard & Poor's ("S&P"), an independent credit rating agency. Credit ratings range from AAA (highest) to D (lowest) based on S&P's measures. Further information on S&P's rating methodology may be found at www.standardandpoors.com. Other rating agencies may rate the same securities differently. Ratings are relative and subjective and are not absolute standards of quality. Credit quality does not remove market risk and is subject to change. "Not Rated" securities are not rated by S&P, but may be rated by other rating agencies and do not necessarily indicate low quality. | |||
