Shareholder Report |
6 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||||
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Jun. 30, 2026
USD ($)
Holding
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| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Document Type | N-CSRS | ||||||||||||||||||||||||||||||||||||||||||||||||
| Amendment Flag | false | ||||||||||||||||||||||||||||||||||||||||||||||||
| Registrant Name | JOHN HANCOCK VARIABLE INSURANCE TRUST | ||||||||||||||||||||||||||||||||||||||||||||||||
| Entity Central Index Key | 0000756913 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Entity Investment Company Type | N-1A | ||||||||||||||||||||||||||||||||||||||||||||||||
| Document Period End Date | Jun. 30, 2026 | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022342 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Total Bond Market Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAGUX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Total Bond Market Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,062,180,596 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,131 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 16.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
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| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
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| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000117966 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Total Bond Market Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAGVX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Total Bond Market Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
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| Expenses Paid, Amount | $ 25 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,062,180,596 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,131 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 16.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
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| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
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| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000117965 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Total Bond Market Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTBMX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Total Bond Market Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 15 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.30% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,062,180,596 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,131 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 16.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
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| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022375 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Core Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JADKX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Core Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 33 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.67% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 660,562,487 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 928 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 171.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
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| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022376 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Core Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAAEX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Core Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 43 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.87% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 660,562,487 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 928 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 171.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
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| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022374 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Core Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JVCNX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Core Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 31 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.62% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 660,562,487 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 928 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 171.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
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| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022418 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Opportunistic Fixed Income Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAEKX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Opportunistic Fixed Income Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
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| Expenses Paid, Amount | $ 39 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.77% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 143,922,886 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,248 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 131.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund. Portfolio Composition
Country Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022420 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Opportunistic Fixed Income Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAEHX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Opportunistic Fixed Income Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 51 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 1.02% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 143,922,886 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,248 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 131.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund. Portfolio Composition
Country Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022419 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Opportunistic Fixed Income Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAEJX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Opportunistic Fixed Income Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 41 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.82% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 143,922,886 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,248 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 131.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund. Portfolio Composition
Country Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022431 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Active Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAHFX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Active Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 35 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.70% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 559,715,250 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,115 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 49.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022432 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Active Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAHEX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Active Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.90% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 559,715,250 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,115 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 49.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022430 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Active Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAHDX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Active Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 32 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.65% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 559,715,250 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,115 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 49.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022446 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | High Yield Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAEMX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the High Yield Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 30 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.59% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 180,379,004 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 610 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 15.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022448 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | High Yield Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAEOX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the High Yield Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 42 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.84% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 180,379,004 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 610 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 15.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
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| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022447 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | High Yield Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAELX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the High Yield Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 32 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.64% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 180,379,004 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 610 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 15.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022568 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Investment Quality Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JADUX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Investment Quality Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 38 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.76% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 210,536,558 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 841 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 45.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022569 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Investment Quality Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JADSX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Investment Quality Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 48 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.96% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 210,536,558 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 841 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 45.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022567 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Investment Quality Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAJNX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Investment Quality Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 35 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.71% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 210,536,558 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 841 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 45.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022640 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Money Market Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JABXX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Money Market Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 14 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.28% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 2,074,185,352 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 108 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund.
Portfolio Composition
Maturity Composition
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| C000022642 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Money Market Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAAXX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Money Market Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 26 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.53% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 2,074,185,352 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 108 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund. Portfolio Composition
Maturity Composition Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| C000022641 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Money Market Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHOXX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Money Market Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 17 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.33% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 2,074,185,352 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 108 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund. Portfolio Composition
Maturity Composition Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| C000022740 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Strategic Income Opportunities Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JESNX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Strategic Income Opportunities Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 39 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.78% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 300,355,856 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 502 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 24.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022741 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Strategic Income Opportunities Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JESPX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Strategic Income Opportunities Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 49 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.98% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 300,355,856 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 502 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 24.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000022739 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Strategic Income Opportunities Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JVRNX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Strategic Income Opportunities Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 36 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.73% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 300,355,856 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 502 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 24.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000073237 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Short Term Government Income Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAFYX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Short Term Government Income Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 32 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.64% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 247,741,609 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 102 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 241.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000073239 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Short Term Government Income Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAFWX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Short Term Government Income Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 44 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.89% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 247,741,609 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 102 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 241.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000073238 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Short Term Government Income Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAJPX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Short Term Government Income Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 34 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.69% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 247,741,609 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 102 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 241.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000078286 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Select Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAFZX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Select Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 33 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.66% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 503,715,682 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 829 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 83.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
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| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000078287 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Select Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHBDX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Select Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 43 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.86% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 503,715,682 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 829 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 83.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
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| Credit Quality Explanation [Text Block] |
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000078285 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Select Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAGBX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Select Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 31 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.62% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 503,715,682 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 829 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 83.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Portfolio Composition
Quality Composition
Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000090651 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Ultra Short Term Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series NAV | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAGFX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Ultra Short Term Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 28 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.56% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 205,432,435 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 211 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 41.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000090650 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Ultra Short Term Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series II | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAGEX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Ultra Short Term Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 40 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.81% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 205,432,435 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 211 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 41.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||||
| C000090649 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Ultra Short Term Bond Trust | ||||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Series I | ||||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAGJX | ||||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This contains important information about the Ultra Short Term Bond Trust (the fund) for the period of January 1, 2026 to June 30, 2026. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance. | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029800-732-5543 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | dfinview.com/johnhancock?site=funds | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] | What were the fund costs during the last six months ? (Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 30 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.61% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 205,432,435 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 211 | ||||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 41.00% | ||||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 6-30-26 and do not reflect subsequent downgrades or upgrades, if any.
|
||||||||||||||||||||||||||||||||||||||||||||||||
| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. |