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Shareholder Report
 6 Months Ended
Jun. 30, 2025
USD ($)
Holding
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, 2025
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 semiannual shareholder report contains important information about the Total Bond Market Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Total Bond Market Trust
(Series I/JTBMX)		 $15 0.30%
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.30%
Net Assets $ 1,047,589,061
Holdings Count | Holding 1,108
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,047,589,061
Total number of portfolio holdings 1,108
Portfolio turnover rate 31%
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
U.S. Government 45.9%
U.S. Government Agency 25.2%
Corporate bonds 24.7%
Collateralized mortgage obligations – Commercial and residential 1.4%
Foreign government obligations 0.8%
Asset-backed securities 0.5%
Municipal bonds 0.3%
Short-term investments and other 1.2%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
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 semiannual shareholder report contains important information about the Total Bond Market Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Total Bond Market Trust
(Series II/JAGVX)		 $25 0.50%
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.50%
Net Assets $ 1,047,589,061
Holdings Count | Holding 1,108
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,047,589,061
Total number of portfolio holdings 1,108
Portfolio turnover rate 31%
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
U.S. Government 45.9%
U.S. Government Agency 25.2%
Corporate bonds 24.7%
Collateralized mortgage obligations – Commercial and residential 1.4%
Foreign government obligations 0.8%
Asset-backed securities 0.5%
Municipal bonds 0.3%
Short-term investments and other 1.2%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
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 semiannual shareholder report contains important information about the Total Bond Market Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Total Bond Market Trust
(Series NAV/JAGUX)		 $13 0.25%
Expenses Paid, Amount $ 13
Expense Ratio, Percent 0.25%
Net Assets $ 1,047,589,061
Holdings Count | Holding 1,108
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,047,589,061
Total number of portfolio holdings 1,108
Portfolio turnover rate 31%
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
U.S. Government 45.9%
U.S. Government Agency 25.2%
Corporate bonds 24.7%
Collateralized mortgage obligations – Commercial and residential 1.4%
Foreign government obligations 0.8%
Asset-backed securities 0.5%
Municipal bonds 0.3%
Short-term investments and other 1.2%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
C000022347 [Member]  
Shareholder Report [Line Items]  
Fund Name American Growth Trust
Class Name Series I
Trading Symbol JAHJX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Growth Trust
(Series I/JAHJX)		 $32 0.62%
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.62%
Net Assets $ 1,064,134,445
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,064,134,445
Total number of portfolio holdings 1
Portfolio turnover rate 8%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Growth Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 27.4%
Communication services 20.0%
Consumer discretionary 13.8%
Health care 11.1%
Industrials 10.5%
Financials 8.0%
Consumer staples 2.0%
Energy 2.0%
Materials 1.4%
Utilities 0.7%
Real estate 0.6%
Short-term investments and other 2.5%
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.
C000022348 [Member]  
Shareholder Report [Line Items]  
Fund Name American Growth Trust
Class Name Series II
Trading Symbol JAHKX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Growth Trust
(Series II/JAHKX)		 $35 0.68%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.68%
Net Assets $ 1,064,134,445
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,064,134,445
Total number of portfolio holdings 1
Portfolio turnover rate 8%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Growth Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 27.4%
Communication services 20.0%
Consumer discretionary 13.8%
Health care 11.1%
Industrials 10.5%
Financials 8.0%
Consumer staples 2.0%
Energy 2.0%
Materials 1.4%
Utilities 0.7%
Real estate 0.6%
Short-term investments and other 2.5%
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.
C000022349 [Member]  
Shareholder Report [Line Items]  
Fund Name American Growth Trust
Class Name Series III
Trading Symbol JAHGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Growth Trust
(Series III/JAHGX)		 $14 0.27%
Expenses Paid, Amount $ 14
Expense Ratio, Percent 0.27%
Net Assets $ 1,064,134,445
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,064,134,445
Total number of portfolio holdings 1
Portfolio turnover rate 8%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Growth Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 27.4%
Communication services 20.0%
Consumer discretionary 13.8%
Health care 11.1%
Industrials 10.5%
Financials 8.0%
Consumer staples 2.0%
Energy 2.0%
Materials 1.4%
Utilities 0.7%
Real estate 0.6%
Short-term investments and other 2.5%
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.
C000022351 [Member]  
Shareholder Report [Line Items]  
Fund Name American International Trust
Class Name Series I
Trading Symbol JAHLX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American International Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American International Trust
(Series I/JAHLX)		 $33 0.63%
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.63%
Net Assets $ 369,841,203
Holdings Count | Holding 1
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $369,841,203
Total number of portfolio holdings 1
Portfolio turnover rate 1%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – International Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Industrials 18.2%
Financials 16.9%
Information technology 13.3%
Communication services 9.1%
Consumer discretionary 9.0%
Health care 8.6%
Materials 7.9%
Consumer staples 6.0%
Energy 5.5%
Utilities 1.6%
Short-term investments and other 3.9%
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.
C000022352 [Member]  
Shareholder Report [Line Items]  
Fund Name American International Trust
Class Name Series II
Trading Symbol JAHMX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American International Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American International Trust
(Series II/JAHMX)		 $38 0.73%
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.73%
Net Assets $ 369,841,203
Holdings Count | Holding 1
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $369,841,203
Total number of portfolio holdings 1
Portfolio turnover rate 1%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – International Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Industrials 18.2%
Financials 16.9%
Information technology 13.3%
Communication services 9.1%
Consumer discretionary 9.0%
Health care 8.6%
Materials 7.9%
Consumer staples 6.0%
Energy 5.5%
Utilities 1.6%
Short-term investments and other 3.9%
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.
C000022353 [Member]  
Shareholder Report [Line Items]  
Fund Name American International Trust
Class Name Series III
Trading Symbol JAHPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American International Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American International Trust
(Series III/JAHPX)		 $15 0.28%
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.28%
Net Assets $ 369,841,203
Holdings Count | Holding 1
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $369,841,203
Total number of portfolio holdings 1
Portfolio turnover rate 1%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – International Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Industrials 18.2%
Financials 16.9%
Information technology 13.3%
Communication services 9.1%
Consumer discretionary 9.0%
Health care 8.6%
Materials 7.9%
Consumer staples 6.0%
Energy 5.5%
Utilities 1.6%
Short-term investments and other 3.9%
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.
C000022355 [Member]  
Shareholder Report [Line Items]  
Fund Name Blue Chip Growth Trust
Class Name Series I
Trading Symbol JADZX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Blue Chip Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Blue Chip Growth Trust
(Series I/JADZX)		 $41 0.79%
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.79%
Net Assets $ 2,110,637,651
Holdings Count | Holding 67
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,110,637,651
Total number of portfolio holdings 67
Portfolio turnover rate 10%
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.
Top Ten Holdings
NVIDIA Corp. 14.1%
Microsoft Corp. 13.8%
Apple, Inc. 7.7%
Amazon.com, Inc. 7.1%
Meta Platforms, Inc., Class A 6.7%
Alphabet, Inc., Class C 3.6%
Visa, Inc., Class A 3.1%
Broadcom, Inc. 3.1%
Carvana Company 3.1%
Netflix, Inc. 2.9%
Sector Composition
Information technology 46.9%
Consumer discretionary 15.9%
Communication services 15.7%
Financials 8.7%
Health care 6.7%
Industrials 3.1%
Utilities 0.9%
Consumer staples 0.8%
Materials 0.7%
Energy 0.2%
Short-term investments and other 0.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 14.1%
Microsoft Corp. 13.8%
Apple, Inc. 7.7%
Amazon.com, Inc. 7.1%
Meta Platforms, Inc., Class A 6.7%
Alphabet, Inc., Class C 3.6%
Visa, Inc., Class A 3.1%
Broadcom, Inc. 3.1%
Carvana Company 3.1%
Netflix, Inc. 2.9%
C000022356 [Member]  
Shareholder Report [Line Items]  
Fund Name Blue Chip Growth Trust
Class Name Series II
Trading Symbol JADYX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Blue Chip Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Blue Chip Growth Trust
(Series II/JADYX)		 $51 0.99%
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.99%
Net Assets $ 2,110,637,651
Holdings Count | Holding 67
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,110,637,651
Total number of portfolio holdings 67
Portfolio turnover rate 10%
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.
Top Ten Holdings
NVIDIA Corp. 14.1%
Microsoft Corp. 13.8%
Apple, Inc. 7.7%
Amazon.com, Inc. 7.1%
Meta Platforms, Inc., Class A 6.7%
Alphabet, Inc., Class C 3.6%
Visa, Inc., Class A 3.1%
Broadcom, Inc. 3.1%
Carvana Company 3.1%
Netflix, Inc. 2.9%
Sector Composition
Information technology 46.9%
Consumer discretionary 15.9%
Communication services 15.7%
Financials 8.7%
Health care 6.7%
Industrials 3.1%
Utilities 0.9%
Consumer staples 0.8%
Materials 0.7%
Energy 0.2%
Short-term investments and other 0.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 14.1%
Microsoft Corp. 13.8%
Apple, Inc. 7.7%
Amazon.com, Inc. 7.1%
Meta Platforms, Inc., Class A 6.7%
Alphabet, Inc., Class C 3.6%
Visa, Inc., Class A 3.1%
Broadcom, Inc. 3.1%
Carvana Company 3.1%
Netflix, Inc. 2.9%
C000022354 [Member]  
Shareholder Report [Line Items]  
Fund Name Blue Chip Growth Trust
Class Name Series NAV
Trading Symbol JAEDX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Blue Chip Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Blue Chip Growth Trust
(Series NAV/JAEDX)		 $38 0.74%
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.74%
Net Assets $ 2,110,637,651
Holdings Count | Holding 67
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,110,637,651
Total number of portfolio holdings 67
Portfolio turnover rate 10%
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.
Top Ten Holdings
NVIDIA Corp. 14.1%
Microsoft Corp. 13.8%
Apple, Inc. 7.7%
Amazon.com, Inc. 7.1%
Meta Platforms, Inc., Class A 6.7%
Alphabet, Inc., Class C 3.6%
Visa, Inc., Class A 3.1%
Broadcom, Inc. 3.1%
Carvana Company 3.1%
Netflix, Inc. 2.9%
Sector Composition
Information technology 46.9%
Consumer discretionary 15.9%
Communication services 15.7%
Financials 8.7%
Health care 6.7%
Industrials 3.1%
Utilities 0.9%
Consumer staples 0.8%
Materials 0.7%
Energy 0.2%
Short-term investments and other 0.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 14.1%
Microsoft Corp. 13.8%
Apple, Inc. 7.7%
Amazon.com, Inc. 7.1%
Meta Platforms, Inc., Class A 6.7%
Alphabet, Inc., Class C 3.6%
Visa, Inc., Class A 3.1%
Broadcom, Inc. 3.1%
Carvana Company 3.1%
Netflix, Inc. 2.9%
C000117967 [Member]  
Shareholder Report [Line Items]  
Fund Name 500 Index Trust
Class Name Series I
Trading Symbol JFIVX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the 500 Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
500 Index Trust
(Series I/JFIVX)		 $15 0.30%
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.30%
Net Assets $ 11,300,831,243
Holdings Count | Holding 506
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $11,300,831,243
Total number of portfolio holdings 506
Portfolio turnover rate 1%
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.
Top Ten Holdings
NVIDIA Corp. 7.1%
Microsoft Corp. 6.8%
Apple, Inc. 5.7%
Amazon.com, Inc. 3.8%
Meta Platforms, Inc., Class A 3.0%
Broadcom, Inc. 2.4%
Alphabet, Inc., Class A 1.9%
Berkshire Hathaway, Inc., Class B 1.7%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
Sector Composition
Information technology 32.1%
Financials 13.6%
Consumer discretionary 10.1%
Communication services 9.5%
Health care 9.0%
Industrials 8.3%
Consumer staples 5.4%
Energy 2.9%
Utilities 2.3%
Real estate 2.0%
Materials 1.8%
Short-term investments and other 3.0%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 7.1%
Microsoft Corp. 6.8%
Apple, Inc. 5.7%
Amazon.com, Inc. 3.8%
Meta Platforms, Inc., Class A 3.0%
Broadcom, Inc. 2.4%
Alphabet, Inc., Class A 1.9%
Berkshire Hathaway, Inc., Class B 1.7%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
C000117968 [Member]  
Shareholder Report [Line Items]  
Fund Name 500 Index Trust
Class Name Series II
Trading Symbol JAGKX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the 500 Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
500 Index Trust
(Series II/JAGKX)		 $26 0.50%
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.50%
Net Assets $ 11,300,831,243
Holdings Count | Holding 506
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $11,300,831,243
Total number of portfolio holdings 506
Portfolio turnover rate 1%
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.
Top Ten Holdings
NVIDIA Corp. 7.1%
Microsoft Corp. 6.8%
Apple, Inc. 5.7%
Amazon.com, Inc. 3.8%
Meta Platforms, Inc., Class A 3.0%
Broadcom, Inc. 2.4%
Alphabet, Inc., Class A 1.9%
Berkshire Hathaway, Inc., Class B 1.7%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
Sector Composition
Information technology 32.1%
Financials 13.6%
Consumer discretionary 10.1%
Communication services 9.5%
Health care 9.0%
Industrials 8.3%
Consumer staples 5.4%
Energy 2.9%
Utilities 2.3%
Real estate 2.0%
Materials 1.8%
Short-term investments and other 3.0%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 7.1%
Microsoft Corp. 6.8%
Apple, Inc. 5.7%
Amazon.com, Inc. 3.8%
Meta Platforms, Inc., Class A 3.0%
Broadcom, Inc. 2.4%
Alphabet, Inc., Class A 1.9%
Berkshire Hathaway, Inc., Class B 1.7%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
C000022362 [Member]  
Shareholder Report [Line Items]  
Fund Name 500 Index Trust
Class Name Series NAV
Trading Symbol JAGMX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the 500 Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
500 Index Trust
(Series NAV/JAGMX)		 $13 0.25%
Expenses Paid, Amount $ 13
Expense Ratio, Percent 0.25%
Net Assets $ 11,300,831,243
Holdings Count | Holding 506
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $11,300,831,243
Total number of portfolio holdings 506
Portfolio turnover rate 1%
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.
Top Ten Holdings
NVIDIA Corp. 7.1%
Microsoft Corp. 6.8%
Apple, Inc. 5.7%
Amazon.com, Inc. 3.8%
Meta Platforms, Inc., Class A 3.0%
Broadcom, Inc. 2.4%
Alphabet, Inc., Class A 1.9%
Berkshire Hathaway, Inc., Class B 1.7%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
Sector Composition
Information technology 32.1%
Financials 13.6%
Consumer discretionary 10.1%
Communication services 9.5%
Health care 9.0%
Industrials 8.3%
Consumer staples 5.4%
Energy 2.9%
Utilities 2.3%
Real estate 2.0%
Materials 1.8%
Short-term investments and other 3.0%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 7.1%
Microsoft Corp. 6.8%
Apple, Inc. 5.7%
Amazon.com, Inc. 3.8%
Meta Platforms, Inc., Class A 3.0%
Broadcom, Inc. 2.4%
Alphabet, Inc., Class A 1.9%
Berkshire Hathaway, Inc., Class B 1.7%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
C000022367 [Member]  
Shareholder Report [Line Items]  
Fund Name U.S. Growth Trust
Class Name Series I
Trading Symbol JAFHX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the U.S. Growth Trust, formerly Capital Appreciation Trust, (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
U.S. Growth Trust
(Series I/JAFHX)		 $41 0.79%
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.79%
Net Assets $ 708,013,283
Holdings Count | Holding 43
Investment Company Portfolio Turnover 64.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $708,013,283
Total number of portfolio holdings 43
Portfolio turnover rate 64%
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.
Top Ten Holdings
NVIDIA Corp. 11.9%
Microsoft Corp. 6.8%
Amazon.com, Inc. 6.6%
Broadcom, Inc. 5.1%
Meta Platforms, Inc., Class A 5.0%
Apple, Inc. 4.8%
Alphabet, Inc., Class A 4.6%
Mastercard, Inc., Class A 3.9%
Eli Lilly & Company 3.4%
Netflix, Inc. 3.3%
Sector Composition
Information technology 38.0%
Communication services 15.4%
Consumer discretionary 13.6%
Financials 12.3%
Health care 6.5%
Industrials 5.3%
Consumer staples 3.7%
Real estate 2.7%
Energy 1.9%
Short-term investments and other 0.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 11.9%
Microsoft Corp. 6.8%
Amazon.com, Inc. 6.6%
Broadcom, Inc. 5.1%
Meta Platforms, Inc., Class A 5.0%
Apple, Inc. 4.8%
Alphabet, Inc., Class A 4.6%
Mastercard, Inc., Class A 3.9%
Eli Lilly & Company 3.4%
Netflix, Inc. 3.3%
C000022368 [Member]  
Shareholder Report [Line Items]  
Fund Name U.S. Growth Trust
Class Name Series II
Trading Symbol JAFJX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the U.S. Growth Trust, formerly Capital Appreciation Trust, (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
U.S. Growth Trust
(Series II/JAFJX)		 $51 0.99%
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.99%
Net Assets $ 708,013,283
Holdings Count | Holding 43
Investment Company Portfolio Turnover 64.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $708,013,283
Total number of portfolio holdings 43
Portfolio turnover rate 64%
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.
Top Ten Holdings
NVIDIA Corp. 11.9%
Microsoft Corp. 6.8%
Amazon.com, Inc. 6.6%
Broadcom, Inc. 5.1%
Meta Platforms, Inc., Class A 5.0%
Apple, Inc. 4.8%
Alphabet, Inc., Class A 4.6%
Mastercard, Inc., Class A 3.9%
Eli Lilly & Company 3.4%
Netflix, Inc. 3.3%
Sector Composition
Information technology 38.0%
Communication services 15.4%
Consumer discretionary 13.6%
Financials 12.3%
Health care 6.5%
Industrials 5.3%
Consumer staples 3.7%
Real estate 2.7%
Energy 1.9%
Short-term investments and other 0.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 11.9%
Microsoft Corp. 6.8%
Amazon.com, Inc. 6.6%
Broadcom, Inc. 5.1%
Meta Platforms, Inc., Class A 5.0%
Apple, Inc. 4.8%
Alphabet, Inc., Class A 4.6%
Mastercard, Inc., Class A 3.9%
Eli Lilly & Company 3.4%
Netflix, Inc. 3.3%
C000022366 [Member]  
Shareholder Report [Line Items]  
Fund Name U.S. Growth Trust
Class Name Series NAV
Trading Symbol JAFGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the U.S. Growth Trust, formerly Capital Appreciation Trust, (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
U.S. Growth Trust
(Series NAV/JAFGX)		 $38 0.74%
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.74%
Net Assets $ 708,013,283
Holdings Count | Holding 43
Investment Company Portfolio Turnover 64.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $708,013,283
Total number of portfolio holdings 43
Portfolio turnover rate 64%
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.
Top Ten Holdings
NVIDIA Corp. 11.9%
Microsoft Corp. 6.8%
Amazon.com, Inc. 6.6%
Broadcom, Inc. 5.1%
Meta Platforms, Inc., Class A 5.0%
Apple, Inc. 4.8%
Alphabet, Inc., Class A 4.6%
Mastercard, Inc., Class A 3.9%
Eli Lilly & Company 3.4%
Netflix, Inc. 3.3%
Sector Composition
Information technology 38.0%
Communication services 15.4%
Consumer discretionary 13.6%
Financials 12.3%
Health care 6.5%
Industrials 5.3%
Consumer staples 3.7%
Real estate 2.7%
Energy 1.9%
Short-term investments and other 0.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 11.9%
Microsoft Corp. 6.8%
Amazon.com, Inc. 6.6%
Broadcom, Inc. 5.1%
Meta Platforms, Inc., Class A 5.0%
Apple, Inc. 4.8%
Alphabet, Inc., Class A 4.6%
Mastercard, Inc., Class A 3.9%
Eli Lilly & Company 3.4%
Netflix, Inc. 3.3%
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 semiannual shareholder report contains important information about the Core Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Core Bond Trust
(Series I/JADKX)		 $34 0.67%
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.67%
Net Assets $ 776,661,722
Holdings Count | Holding 1,042
Investment Company Portfolio Turnover 124.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $776,661,722
Total number of portfolio holdings 1,042
Portfolio turnover rate 124%
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
U.S. Government Agency 31.4%
Corporate bonds 25.5%
U.S. Government 15.1%
Collateralized mortgage obligations – U.S. Government Agency 14.3%
Asset-backed securities 9.7%
Collateralized mortgage obligations – Commercial and residential 1.7%
Foreign government obligations 1.1%
Municipal bonds 0.1%
Short-term investments and other 1.1%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
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 semiannual shareholder report contains important information about the Core Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Core Bond Trust
(Series II/JAAEX)		 $44 0.87%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.87%
Net Assets $ 776,661,722
Holdings Count | Holding 1,042
Investment Company Portfolio Turnover 124.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $776,661,722
Total number of portfolio holdings 1,042
Portfolio turnover rate 124%
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
U.S. Government Agency 31.4%
Corporate bonds 25.5%
U.S. Government 15.1%
Collateralized mortgage obligations – U.S. Government Agency 14.3%
Asset-backed securities 9.7%
Collateralized mortgage obligations – Commercial and residential 1.7%
Foreign government obligations 1.1%
Municipal bonds 0.1%
Short-term investments and other 1.1%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
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 semiannual shareholder report contains important information about the Core Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Core Bond Trust
(Series NAV/JVCNX)		 $31 0.62%
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.62%
Net Assets $ 776,661,722
Holdings Count | Holding 1,042
Investment Company Portfolio Turnover 124.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $776,661,722
Total number of portfolio holdings 1,042
Portfolio turnover rate 124%
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
U.S. Government Agency 31.4%
Corporate bonds 25.5%
U.S. Government 15.1%
Collateralized mortgage obligations – U.S. Government Agency 14.3%
Asset-backed securities 9.7%
Collateralized mortgage obligations – Commercial and residential 1.7%
Foreign government obligations 1.1%
Municipal bonds 0.1%
Short-term investments and other 1.1%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
C000022399 [Member]  
Shareholder Report [Line Items]  
Fund Name Equity Income Trust
Class Name Series I
Trading Symbol JAEGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Equity Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Equity Income Trust
(Series I/JAEGX)		 $39 0.76%
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.76%
Net Assets $ 824,633,996
Holdings Count | Holding 123
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $824,633,996
Total number of portfolio holdings 123
Portfolio turnover rate 14%
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.
Top Ten Holdings
MetLife, Inc. 2.1%
The Southern Company 2.1%
Qualcomm, Inc. 2.0%
The Charles Schwab Corp. 1.9%
JPMorgan Chase & Co. 1.9%
Wells Fargo & Company 1.8%
Elevance Health, Inc. 1.8%
L3Harris Technologies, Inc. 1.7%
Citigroup, Inc. 1.7%
Kimberly-Clark Corp. 1.7%
Sector Composition
Financials 22.8%
Industrials 13.5%
Health care 12.7%
Information technology 9.0%
Consumer staples 8.8%
Energy 8.7%
Utilities 6.0%
Communication services 5.9%
Consumer discretionary 4.4%
Real estate 3.6%
Materials 3.0%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
MetLife, Inc. 2.1%
The Southern Company 2.1%
Qualcomm, Inc. 2.0%
The Charles Schwab Corp. 1.9%
JPMorgan Chase & Co. 1.9%
Wells Fargo & Company 1.8%
Elevance Health, Inc. 1.8%
L3Harris Technologies, Inc. 1.7%
Citigroup, Inc. 1.7%
Kimberly-Clark Corp. 1.7%
C000022400 [Member]  
Shareholder Report [Line Items]  
Fund Name Equity Income Trust
Class Name Series II
Trading Symbol JAEFX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Equity Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Equity Income Trust
(Series II/JAEFX)		 $49 0.96%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.96%
Net Assets $ 824,633,996
Holdings Count | Holding 123
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $824,633,996
Total number of portfolio holdings 123
Portfolio turnover rate 14%
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.
Top Ten Holdings
MetLife, Inc. 2.1%
The Southern Company 2.1%
Qualcomm, Inc. 2.0%
The Charles Schwab Corp. 1.9%
JPMorgan Chase & Co. 1.9%
Wells Fargo & Company 1.8%
Elevance Health, Inc. 1.8%
L3Harris Technologies, Inc. 1.7%
Citigroup, Inc. 1.7%
Kimberly-Clark Corp. 1.7%
Sector Composition
Financials 22.8%
Industrials 13.5%
Health care 12.7%
Information technology 9.0%
Consumer staples 8.8%
Energy 8.7%
Utilities 6.0%
Communication services 5.9%
Consumer discretionary 4.4%
Real estate 3.6%
Materials 3.0%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
MetLife, Inc. 2.1%
The Southern Company 2.1%
Qualcomm, Inc. 2.0%
The Charles Schwab Corp. 1.9%
JPMorgan Chase & Co. 1.9%
Wells Fargo & Company 1.8%
Elevance Health, Inc. 1.8%
L3Harris Technologies, Inc. 1.7%
Citigroup, Inc. 1.7%
Kimberly-Clark Corp. 1.7%
C000022398 [Member]  
Shareholder Report [Line Items]  
Fund Name Equity Income Trust
Class Name Series NAV
Trading Symbol JAEEX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Equity Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Equity Income Trust
(Series NAV/JAEEX)		 $36 0.71%
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.71%
Net Assets $ 824,633,996
Holdings Count | Holding 123
Investment Company Portfolio Turnover 14.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $824,633,996
Total number of portfolio holdings 123
Portfolio turnover rate 14%
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.
Top Ten Holdings
MetLife, Inc. 2.1%
The Southern Company 2.1%
Qualcomm, Inc. 2.0%
The Charles Schwab Corp. 1.9%
JPMorgan Chase & Co. 1.9%
Wells Fargo & Company 1.8%
Elevance Health, Inc. 1.8%
L3Harris Technologies, Inc. 1.7%
Citigroup, Inc. 1.7%
Kimberly-Clark Corp. 1.7%
Sector Composition
Financials 22.8%
Industrials 13.5%
Health care 12.7%
Information technology 9.0%
Consumer staples 8.8%
Energy 8.7%
Utilities 6.0%
Communication services 5.9%
Consumer discretionary 4.4%
Real estate 3.6%
Materials 3.0%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
MetLife, Inc. 2.1%
The Southern Company 2.1%
Qualcomm, Inc. 2.0%
The Charles Schwab Corp. 1.9%
JPMorgan Chase & Co. 1.9%
Wells Fargo & Company 1.8%
Elevance Health, Inc. 1.8%
L3Harris Technologies, Inc. 1.7%
Citigroup, Inc. 1.7%
Kimberly-Clark Corp. 1.7%
C000022403 [Member]  
Shareholder Report [Line Items]  
Fund Name Financial Industries Trust
Class Name Series I
Trading Symbol JEFSX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Financial Industries Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Financial Industries Trust
(Series I/JEFSX)		 $47 0.92%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.92%
Net Assets $ 139,097,982
Holdings Count | Holding 52
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $139,097,982
Total number of portfolio holdings 52
Portfolio turnover rate 26%
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.
Top Ten Holdings
Wells Fargo & Company 4.5%
Citigroup, Inc. 3.9%
JPMorgan Chase & Co. 3.8%
M&T Bank Corp. 3.6%
Nasdaq, Inc. 3.6%
Bank of America Corp. 3.6%
The Goldman Sachs Group, Inc. 3.2%
CME Group, Inc. 2.9%
The Allstate Corp. 2.9%
Visa, Inc., Class A 2.6%
Industry Composition
Banks 35.7%
Capital markets 24.8%
Insurance 24.4%
Financial services 9.9%
Consumer finance 1.6%
Specialized REITs 0.7%
Short-term investments and other 2.9%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Wells Fargo & Company 4.5%
Citigroup, Inc. 3.9%
JPMorgan Chase & Co. 3.8%
M&T Bank Corp. 3.6%
Nasdaq, Inc. 3.6%
Bank of America Corp. 3.6%
The Goldman Sachs Group, Inc. 3.2%
CME Group, Inc. 2.9%
The Allstate Corp. 2.9%
Visa, Inc., Class A 2.6%
C000022404 [Member]  
Shareholder Report [Line Items]  
Fund Name Financial Industries Trust
Class Name Series II
Trading Symbol JEFCX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Financial Industries Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Financial Industries Trust
(Series II/JEFCX)		 $57 1.12%
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.12%
Net Assets $ 139,097,982
Holdings Count | Holding 52
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $139,097,982
Total number of portfolio holdings 52
Portfolio turnover rate 26%
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.
Top Ten Holdings
Wells Fargo & Company 4.5%
Citigroup, Inc. 3.9%
JPMorgan Chase & Co. 3.8%
M&T Bank Corp. 3.6%
Nasdaq, Inc. 3.6%
Bank of America Corp. 3.6%
The Goldman Sachs Group, Inc. 3.2%
CME Group, Inc. 2.9%
The Allstate Corp. 2.9%
Visa, Inc., Class A 2.6%
Industry Composition
Banks 35.7%
Capital markets 24.8%
Insurance 24.4%
Financial services 9.9%
Consumer finance 1.6%
Specialized REITs 0.7%
Short-term investments and other 2.9%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Wells Fargo & Company 4.5%
Citigroup, Inc. 3.9%
JPMorgan Chase & Co. 3.8%
M&T Bank Corp. 3.6%
Nasdaq, Inc. 3.6%
Bank of America Corp. 3.6%
The Goldman Sachs Group, Inc. 3.2%
CME Group, Inc. 2.9%
The Allstate Corp. 2.9%
Visa, Inc., Class A 2.6%
C000022402 [Member]  
Shareholder Report [Line Items]  
Fund Name Financial Industries Trust
Class Name Series NAV
Trading Symbol JAFNX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Financial Industries Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Financial Industries Trust
(Series NAV/JAFNX)		 $45 0.87%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.87%
Net Assets $ 139,097,982
Holdings Count | Holding 52
Investment Company Portfolio Turnover 26.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $139,097,982
Total number of portfolio holdings 52
Portfolio turnover rate 26%
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.
Top Ten Holdings
Wells Fargo & Company 4.5%
Citigroup, Inc. 3.9%
JPMorgan Chase & Co. 3.8%
M&T Bank Corp. 3.6%
Nasdaq, Inc. 3.6%
Bank of America Corp. 3.6%
The Goldman Sachs Group, Inc. 3.2%
CME Group, Inc. 2.9%
The Allstate Corp. 2.9%
Visa, Inc., Class A 2.6%
Industry Composition
Banks 35.7%
Capital markets 24.8%
Insurance 24.4%
Financial services 9.9%
Consumer finance 1.6%
Specialized REITs 0.7%
Short-term investments and other 2.9%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Wells Fargo & Company 4.5%
Citigroup, Inc. 3.9%
JPMorgan Chase & Co. 3.8%
M&T Bank Corp. 3.6%
Nasdaq, Inc. 3.6%
Bank of America Corp. 3.6%
The Goldman Sachs Group, Inc. 3.2%
CME Group, Inc. 2.9%
The Allstate Corp. 2.9%
Visa, Inc., Class A 2.6%
C000022411 [Member]  
Shareholder Report [Line Items]  
Fund Name Global Equity Trust
Class Name Series I
Trading Symbol JEFGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Global Equity Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Global Equity Trust
(Series I/JEFGX)		 $48 0.93%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.93%
Net Assets $ 297,471,515
Holdings Count | Holding 61
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $297,471,515
Total number of portfolio holdings 61
Portfolio turnover rate 22%
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.
Top Ten Holdings
Microsoft Corp. 4.0%
Wells Fargo & Company 2.9%
Philip Morris International, Inc. 2.9%
ING Groep NV 2.6%
McKesson Corp. 2.5%
Medtronic PLC 2.5%
L3Harris Technologies, Inc. 2.4%
AutoZone, Inc. 2.4%
Sony Group Corp. 2.2%
Samsung Electronics Company, Ltd. 2.1%
Sector Composition
Financials 19.4%
Industrials 16.1%
Information technology 13.4%
Consumer discretionary 11.0%
Health care 10.9%
Consumer staples 9.3%
Communication services 6.7%
Materials 6.2%
Energy 5.5%
Short-term investments and other 1.5%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 4.0%
Wells Fargo & Company 2.9%
Philip Morris International, Inc. 2.9%
ING Groep NV 2.6%
McKesson Corp. 2.5%
Medtronic PLC 2.5%
L3Harris Technologies, Inc. 2.4%
AutoZone, Inc. 2.4%
Sony Group Corp. 2.2%
Samsung Electronics Company, Ltd. 2.1%
C000022412 [Member]  
Shareholder Report [Line Items]  
Fund Name Global Equity Trust
Class Name Series II
Trading Symbol JAJFX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Global Equity Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Global Equity Trust
(Series II/JAJFX)		 $59 1.13%
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.13%
Net Assets $ 297,471,515
Holdings Count | Holding 61
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $297,471,515
Total number of portfolio holdings 61
Portfolio turnover rate 22%
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.
Top Ten Holdings
Microsoft Corp. 4.0%
Wells Fargo & Company 2.9%
Philip Morris International, Inc. 2.9%
ING Groep NV 2.6%
McKesson Corp. 2.5%
Medtronic PLC 2.5%
L3Harris Technologies, Inc. 2.4%
AutoZone, Inc. 2.4%
Sony Group Corp. 2.2%
Samsung Electronics Company, Ltd. 2.1%
Sector Composition
Financials 19.4%
Industrials 16.1%
Information technology 13.4%
Consumer discretionary 11.0%
Health care 10.9%
Consumer staples 9.3%
Communication services 6.7%
Materials 6.2%
Energy 5.5%
Short-term investments and other 1.5%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 4.0%
Wells Fargo & Company 2.9%
Philip Morris International, Inc. 2.9%
ING Groep NV 2.6%
McKesson Corp. 2.5%
Medtronic PLC 2.5%
L3Harris Technologies, Inc. 2.4%
AutoZone, Inc. 2.4%
Sony Group Corp. 2.2%
Samsung Electronics Company, Ltd. 2.1%
C000022410 [Member]  
Shareholder Report [Line Items]  
Fund Name Global Equity Trust
Class Name Series NAV
Trading Symbol JAJGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Global Equity Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Global Equity Trust
(Series NAV/JAJGX)		 $46 0.88%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.88%
Net Assets $ 297,471,515
Holdings Count | Holding 61
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $297,471,515
Total number of portfolio holdings 61
Portfolio turnover rate 22%
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.
Top Ten Holdings
Microsoft Corp. 4.0%
Wells Fargo & Company 2.9%
Philip Morris International, Inc. 2.9%
ING Groep NV 2.6%
McKesson Corp. 2.5%
Medtronic PLC 2.5%
L3Harris Technologies, Inc. 2.4%
AutoZone, Inc. 2.4%
Sony Group Corp. 2.2%
Samsung Electronics Company, Ltd. 2.1%
Sector Composition
Financials 19.4%
Industrials 16.1%
Information technology 13.4%
Consumer discretionary 11.0%
Health care 10.9%
Consumer staples 9.3%
Communication services 6.7%
Materials 6.2%
Energy 5.5%
Short-term investments and other 1.5%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 4.0%
Wells Fargo & Company 2.9%
Philip Morris International, Inc. 2.9%
ING Groep NV 2.6%
McKesson Corp. 2.5%
Medtronic PLC 2.5%
L3Harris Technologies, Inc. 2.4%
AutoZone, Inc. 2.4%
Sony Group Corp. 2.2%
Samsung Electronics Company, Ltd. 2.1%
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 semiannual shareholder report contains important information about the Opportunistic Fixed Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Opportunistic Fixed Income Trust
(Series I/JAEJX)		 $42 0.82%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.82%
Net Assets $ 141,428,303
Holdings Count | Holding 1,017
Investment Company Portfolio Turnover 71.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $141,428,303
Total number of portfolio holdings 1,017
Portfolio turnover rate 71%
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
Foreign government obligations 32.2%
U.S. Government Agency 24.7%
Corporate bonds 9.0%
Convertible bonds 5.9%
U.S. Government 5.4%
Collateralized mortgage obligations – U.S. Government Agency 2.6%
Asset-backed securities 2.0%
Term loans 1.6%
Collateralized mortgage obligations – Commercial and residential 1.4%
Exchange-traded funds 1.3%
Preferred securities 0.9%
Short-term investments 13.0%
Country Composition
United States 59.9%
Norway 7.0%
Brazil 5.3%
New Zealand 4.2%
Australia 3.4%
Colombia 2.8%
United Kingdom 2.0%
Iceland 1.5%
Mexico 1.1%
Other countries 12.8%
Quality Composition
Graphical Representation - Allocation 2 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Opportunistic Fixed Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Opportunistic Fixed Income Trust
(Series II/JAEHX)		 $52 1.02%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 1.02%
Net Assets $ 141,428,303
Holdings Count | Holding 1,017
Investment Company Portfolio Turnover 71.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $141,428,303
Total number of portfolio holdings 1,017
Portfolio turnover rate 71%
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
Foreign government obligations 32.2%
U.S. Government Agency 24.7%
Corporate bonds 9.0%
Convertible bonds 5.9%
U.S. Government 5.4%
Collateralized mortgage obligations – U.S. Government Agency 2.6%
Asset-backed securities 2.0%
Term loans 1.6%
Collateralized mortgage obligations – Commercial and residential 1.4%
Exchange-traded funds 1.3%
Preferred securities 0.9%
Short-term investments 13.0%
Country Composition
United States 59.9%
Norway 7.0%
Brazil 5.3%
New Zealand 4.2%
Australia 3.4%
Colombia 2.8%
United Kingdom 2.0%
Iceland 1.5%
Mexico 1.1%
Other countries 12.8%
Quality Composition
Graphical Representation - Allocation 2 Chart
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 6-30-25 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 6-30-25 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.
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 semiannual shareholder report contains important information about the Opportunistic Fixed Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Opportunistic Fixed Income Trust
(Series NAV/JAEKX)		 $39 0.77%
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.77%
Net Assets $ 141,428,303
Holdings Count | Holding 1,017
Investment Company Portfolio Turnover 71.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $141,428,303
Total number of portfolio holdings 1,017
Portfolio turnover rate 71%
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
Foreign government obligations 32.2%
U.S. Government Agency 24.7%
Corporate bonds 9.0%
Convertible bonds 5.9%
U.S. Government 5.4%
Collateralized mortgage obligations – U.S. Government Agency 2.6%
Asset-backed securities 2.0%
Term loans 1.6%
Collateralized mortgage obligations – Commercial and residential 1.4%
Exchange-traded funds 1.3%
Preferred securities 0.9%
Short-term investments 13.0%
Country Composition
United States 59.9%
Norway 7.0%
Brazil 5.3%
New Zealand 4.2%
Australia 3.4%
Colombia 2.8%
United Kingdom 2.0%
Iceland 1.5%
Mexico 1.1%
Other countries 12.8%
Quality Composition
Graphical Representation - Allocation 2 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Active Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Active Bond Trust
(Series I/JAHFX)		 $35 0.70%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.70%
Net Assets $ 556,802,242
Holdings Count | Holding 998
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $556,802,242
Total number of portfolio holdings 998
Portfolio turnover rate 42%
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
U.S. Government Agency 35.7%
Corporate bonds 35.6%
U.S. Government 17.7%
Asset-backed securities 4.8%
Collateralized mortgage obligations – Commercial and residential 2.6%
Collateralized mortgage obligations – U.S. Government Agency 1.0%
Term loans 0.3%
Short-term investments and other 2.3%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Active Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Active Bond Trust
(Series II/JAHEX)		 $46 0.90%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.90%
Net Assets $ 556,802,242
Holdings Count | Holding 998
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $556,802,242
Total number of portfolio holdings 998
Portfolio turnover rate 42%
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
U.S. Government Agency 35.7%
Corporate bonds 35.6%
U.S. Government 17.7%
Asset-backed securities 4.8%
Collateralized mortgage obligations – Commercial and residential 2.6%
Collateralized mortgage obligations – U.S. Government Agency 1.0%
Term loans 0.3%
Short-term investments and other 2.3%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Active Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Active Bond Trust
(Series NAV/JAHDX)		 $33 0.65%
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.65%
Net Assets $ 556,802,242
Holdings Count | Holding 998
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $556,802,242
Total number of portfolio holdings 998
Portfolio turnover rate 42%
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
U.S. Government Agency 35.7%
Corporate bonds 35.6%
U.S. Government 17.7%
Asset-backed securities 4.8%
Collateralized mortgage obligations – Commercial and residential 2.6%
Collateralized mortgage obligations – U.S. Government Agency 1.0%
Term loans 0.3%
Short-term investments and other 2.3%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
C000022443 [Member]  
Shareholder Report [Line Items]  
Fund Name Health Sciences Trust
Class Name Series I
Trading Symbol JEHSX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Health Sciences Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Health Sciences Trust
(Series I/JEHSX)		 $46 0.95%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.95%
Net Assets $ 210,604,678
Holdings Count | Holding 151
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $210,604,678
Total number of portfolio holdings 151
Portfolio turnover rate 25%
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.
Top Ten Holdings
Eli Lilly & Company 12.1%
Intuitive Surgical, Inc. 5.9%
UnitedHealth Group, Inc. 5.2%
Stryker Corp. 5.1%
Vertex Pharmaceuticals, Inc. 3.9%
Boston Scientific Corp. 3.8%
Argenx SE, ADR 3.4%
Danaher Corp. 3.2%
Thermo Fisher Scientific, Inc. 3.1%
Alnylam Pharmaceuticals, Inc. 3.0%
Industry Composition
Biotechnology 38.3%
Health care equipment and supplies 19.4%
Pharmaceuticals 17.3%
Health care providers and services 16.2%
Life sciences tools and services 7.9%
Health care technology 0.4%
Insurance 0.1%
Financial services 0.1%
Short-term investments and other 0.3%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Eli Lilly & Company 12.1%
Intuitive Surgical, Inc. 5.9%
UnitedHealth Group, Inc. 5.2%
Stryker Corp. 5.1%
Vertex Pharmaceuticals, Inc. 3.9%
Boston Scientific Corp. 3.8%
Argenx SE, ADR 3.4%
Danaher Corp. 3.2%
Thermo Fisher Scientific, Inc. 3.1%
Alnylam Pharmaceuticals, Inc. 3.0%
C000022444 [Member]  
Shareholder Report [Line Items]  
Fund Name Health Sciences Trust
Class Name Series II
Trading Symbol JAFKX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Health Sciences Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Health Sciences Trust
(Series II/JAFKX)		 $56 1.15%
Expenses Paid, Amount $ 56
Expense Ratio, Percent 1.15%
Net Assets $ 210,604,678
Holdings Count | Holding 151
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $210,604,678
Total number of portfolio holdings 151
Portfolio turnover rate 25%
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.
Top Ten Holdings
Eli Lilly & Company 12.1%
Intuitive Surgical, Inc. 5.9%
UnitedHealth Group, Inc. 5.2%
Stryker Corp. 5.1%
Vertex Pharmaceuticals, Inc. 3.9%
Boston Scientific Corp. 3.8%
Argenx SE, ADR 3.4%
Danaher Corp. 3.2%
Thermo Fisher Scientific, Inc. 3.1%
Alnylam Pharmaceuticals, Inc. 3.0%
Industry Composition
Biotechnology 38.3%
Health care equipment and supplies 19.4%
Pharmaceuticals 17.3%
Health care providers and services 16.2%
Life sciences tools and services 7.9%
Health care technology 0.4%
Insurance 0.1%
Financial services 0.1%
Short-term investments and other 0.3%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Eli Lilly & Company 12.1%
Intuitive Surgical, Inc. 5.9%
UnitedHealth Group, Inc. 5.2%
Stryker Corp. 5.1%
Vertex Pharmaceuticals, Inc. 3.9%
Boston Scientific Corp. 3.8%
Argenx SE, ADR 3.4%
Danaher Corp. 3.2%
Thermo Fisher Scientific, Inc. 3.1%
Alnylam Pharmaceuticals, Inc. 3.0%
C000022442 [Member]  
Shareholder Report [Line Items]  
Fund Name Health Sciences Trust
Class Name Series NAV
Trading Symbol JAFMX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Health Sciences Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Health Sciences Trust
(Series NAV/JAFMX)		 $44 0.90%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.90%
Net Assets $ 210,604,678
Holdings Count | Holding 151
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $210,604,678
Total number of portfolio holdings 151
Portfolio turnover rate 25%
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.
Top Ten Holdings
Eli Lilly & Company 12.1%
Intuitive Surgical, Inc. 5.9%
UnitedHealth Group, Inc. 5.2%
Stryker Corp. 5.1%
Vertex Pharmaceuticals, Inc. 3.9%
Boston Scientific Corp. 3.8%
Argenx SE, ADR 3.4%
Danaher Corp. 3.2%
Thermo Fisher Scientific, Inc. 3.1%
Alnylam Pharmaceuticals, Inc. 3.0%
Industry Composition
Biotechnology 38.3%
Health care equipment and supplies 19.4%
Pharmaceuticals 17.3%
Health care providers and services 16.2%
Life sciences tools and services 7.9%
Health care technology 0.4%
Insurance 0.1%
Financial services 0.1%
Short-term investments and other 0.3%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Eli Lilly & Company 12.1%
Intuitive Surgical, Inc. 5.9%
UnitedHealth Group, Inc. 5.2%
Stryker Corp. 5.1%
Vertex Pharmaceuticals, Inc. 3.9%
Boston Scientific Corp. 3.8%
Argenx SE, ADR 3.4%
Danaher Corp. 3.2%
Thermo Fisher Scientific, Inc. 3.1%
Alnylam Pharmaceuticals, Inc. 3.0%
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 semiannual shareholder report contains important information about the High Yield Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
High Yield Trust
(Series I/JAELX)		 $37 0.73%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.73%
Net Assets $ 179,703,732
Holdings Count | Holding 342
Investment Company Portfolio Turnover 115.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $179,703,732
Total number of portfolio holdings 342
Portfolio turnover rate 115%
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
Corporate bonds 91.2%
Term loans 5.6%
Preferred securities 0.5%
Short-term investments and other 2.7%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the High Yield Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
High Yield Trust
(Series II/JAEOX)		 $47 0.93%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.93%
Net Assets $ 179,703,732
Holdings Count | Holding 342
Investment Company Portfolio Turnover 115.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $179,703,732
Total number of portfolio holdings 342
Portfolio turnover rate 115%
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
Corporate bonds 91.2%
Term loans 5.6%
Preferred securities 0.5%
Short-term investments and other 2.7%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the High Yield Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
High Yield Trust
(Series NAV/JAEMX)		 $34 0.68%
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.68%
Net Assets $ 179,703,732
Holdings Count | Holding 342
Investment Company Portfolio Turnover 115.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $179,703,732
Total number of portfolio holdings 342
Portfolio turnover rate 115%
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
Corporate bonds 91.2%
Term loans 5.6%
Preferred securities 0.5%
Short-term investments and other 2.7%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
C000022475 [Member]  
Shareholder Report [Line Items]  
Fund Name American Growth-Income Trust
Class Name Series I
Trading Symbol JAHQX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Growth-Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Growth-Income Trust
(Series I/JAHQX)		 $32 0.63%
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.63%
Net Assets $ 976,948,642
Holdings Count | Holding 1
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $976,948,642
Total number of portfolio holdings 1
Portfolio turnover rate 7%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Growth-Income Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 27.8%
Industrials 15.5%
Financials 12.2%
Consumer discretionary 10.8%
Health care 9.3%
Communication services 9.0%
Consumer staples 3.1%
Energy 3.0%
Materials 2.7%
Utilities 2.0%
Real estate 1.8%
Short-term investments and other 2.8%
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.
C000022476 [Member]  
Shareholder Report [Line Items]  
Fund Name American Growth-Income Trust
Class Name Series II
Trading Symbol JAHRX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Growth-Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Growth-Income Trust
(Series II/JAHRX)		 $37 0.71%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.71%
Net Assets $ 976,948,642
Holdings Count | Holding 1
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $976,948,642
Total number of portfolio holdings 1
Portfolio turnover rate 7%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Growth-Income Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 27.8%
Industrials 15.5%
Financials 12.2%
Consumer discretionary 10.8%
Health care 9.3%
Communication services 9.0%
Consumer staples 3.1%
Energy 3.0%
Materials 2.7%
Utilities 2.0%
Real estate 1.8%
Short-term investments and other 2.8%
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.
C000022477 [Member]  
Shareholder Report [Line Items]  
Fund Name American Growth-Income Trust
Class Name Series III
Trading Symbol JAHUX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Growth-Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Growth-Income Trust
(Series III/JAHUX)		 $14 0.28%
Expenses Paid, Amount $ 14
Expense Ratio, Percent 0.28%
Net Assets $ 976,948,642
Holdings Count | Holding 1
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $976,948,642
Total number of portfolio holdings 1
Portfolio turnover rate 7%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Growth-Income Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 27.8%
Industrials 15.5%
Financials 12.2%
Consumer discretionary 10.8%
Health care 9.3%
Communication services 9.0%
Consumer staples 3.1%
Energy 3.0%
Materials 2.7%
Utilities 2.0%
Real estate 1.8%
Short-term investments and other 2.8%
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.
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 semiannual shareholder report contains important information about the Investment Quality Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Investment Quality Bond Trust
(Series I/JADUX)		 $38 0.75%
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.75%
Net Assets $ 207,117,550
Holdings Count | Holding 797
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $207,117,550
Total number of portfolio holdings 797
Portfolio turnover rate 18%
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
U.S. Government 29.3%
U.S. Government Agency 27.7%
Corporate bonds 19.8%
Collateralized mortgage obligations – Commercial and residential 7.7%
Asset-backed securities 6.7%
Collateralized mortgage obligations – U.S. Government Agency 2.9%
Foreign government obligations 2.1%
Municipal bonds 1.2%
Short-term investments 2.6%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Investment Quality Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Investment Quality Bond Trust
(Series II/JADSX)		 $48 0.95%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.95%
Net Assets $ 207,117,550
Holdings Count | Holding 797
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $207,117,550
Total number of portfolio holdings 797
Portfolio turnover rate 18%
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
U.S. Government 29.3%
U.S. Government Agency 27.7%
Corporate bonds 19.8%
Collateralized mortgage obligations – Commercial and residential 7.7%
Asset-backed securities 6.7%
Collateralized mortgage obligations – U.S. Government Agency 2.9%
Foreign government obligations 2.1%
Municipal bonds 1.2%
Short-term investments 2.6%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Investment Quality Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Investment Quality Bond Trust
(Series NAV/JAJNX)		 $35 0.70%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.70%
Net Assets $ 207,117,550
Holdings Count | Holding 797
Investment Company Portfolio Turnover 18.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $207,117,550
Total number of portfolio holdings 797
Portfolio turnover rate 18%
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
U.S. Government 29.3%
U.S. Government Agency 27.7%
Corporate bonds 19.8%
Collateralized mortgage obligations – Commercial and residential 7.7%
Asset-backed securities 6.7%
Collateralized mortgage obligations – U.S. Government Agency 2.9%
Foreign government obligations 2.1%
Municipal bonds 1.2%
Short-term investments 2.6%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
C000022589 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Growth Portfolio
Class Name Series I
Trading Symbol JELGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Growth Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Growth Portfolio
(Series I/JELGX)		 $9 0.18%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.18%
Net Assets $ 5,200,149,430
Holdings Count | Holding 26
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,200,149,430
Total number of portfolio holdings 26
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 96.9%
Equity 69.4%
Large blend 30.6%
U.S. large cap 18.1%
Emerging-market equity 6.3%
U.S. mid cap 5.9%
International equity 4.5%
U.S. small cap 4.0%
Fixed income 27.5%
Intermediate bond 27.5%
Short-term investments and other 3.1%
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.
C000022590 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Growth Portfolio
Class Name Series II
Trading Symbol JAJAX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Growth Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Growth Portfolio
(Series II/JAJAX)		 $19 0.38%
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.38%
Net Assets $ 5,200,149,430
Holdings Count | Holding 26
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,200,149,430
Total number of portfolio holdings 26
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 96.9%
Equity 69.4%
Large blend 30.6%
U.S. large cap 18.1%
Emerging-market equity 6.3%
U.S. mid cap 5.9%
International equity 4.5%
U.S. small cap 4.0%
Fixed income 27.5%
Intermediate bond 27.5%
Short-term investments and other 3.1%
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.
C000022588 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Growth Portfolio
Class Name Series NAV
Trading Symbol JAIZX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Growth Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Growth Portfolio
(Series NAV/JAIZX)		 $7 0.13%
Expenses Paid, Amount $ 7
Expense Ratio, Percent 0.13%
Net Assets $ 5,200,149,430
Holdings Count | Holding 26
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,200,149,430
Total number of portfolio holdings 26
Portfolio turnover rate 11%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 96.9%
Equity 69.4%
Large blend 30.6%
U.S. large cap 18.1%
Emerging-market equity 6.3%
U.S. mid cap 5.9%
International equity 4.5%
U.S. small cap 4.0%
Fixed income 27.5%
Intermediate bond 27.5%
Short-term investments and other 3.1%
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.
C000022594 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Balanced Portfolio
Class Name Series I
Trading Symbol JELBX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Balanced Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Balanced Portfolio
(Series I/JELBX)		 $9 0.17%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.17%
Net Assets $ 3,903,276,208
Holdings Count | Holding 26
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $3,903,276,208
Total number of portfolio holdings 26
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.0%
Equity 50.0%
Large blend 22.1%
U.S. large cap 15.1%
Emerging-market equity 4.0%
U.S. mid cap 3.8%
U.S. small cap 2.8%
International equity 2.2%
Fixed income 48.0%
Intermediate bond 48.0%
Short-term investments and other 2.0%
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.
C000022595 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Balanced Portfolio
Class Name Series II
Trading Symbol JAJRX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Balanced Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Balanced Portfolio
(Series II/JAJRX)		 $19 0.37%
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.37%
Net Assets $ 3,903,276,208
Holdings Count | Holding 26
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $3,903,276,208
Total number of portfolio holdings 26
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.0%
Equity 50.0%
Large blend 22.1%
U.S. large cap 15.1%
Emerging-market equity 4.0%
U.S. mid cap 3.8%
U.S. small cap 2.8%
International equity 2.2%
Fixed income 48.0%
Intermediate bond 48.0%
Short-term investments and other 2.0%
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.
C000022593 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Balanced Portfolio
Class Name Series NAV
Trading Symbol JAIYX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Balanced Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Balanced Portfolio
(Series NAV/JAIYX)		 $6 0.12%
Expenses Paid, Amount $ 6
Expense Ratio, Percent 0.12%
Net Assets $ 3,903,276,208
Holdings Count | Holding 26
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $3,903,276,208
Total number of portfolio holdings 26
Portfolio turnover rate 9%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.0%
Equity 50.0%
Large blend 22.1%
U.S. large cap 15.1%
Emerging-market equity 4.0%
U.S. mid cap 3.8%
U.S. small cap 2.8%
International equity 2.2%
Fixed income 48.0%
Intermediate bond 48.0%
Short-term investments and other 2.0%
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.
C000022599 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Moderate Portfolio
Class Name Series I
Trading Symbol JELMX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Moderate Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Moderate Portfolio
(Series I/JELMX)		 $9 0.17%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.17%
Net Assets $ 1,008,014,176
Holdings Count | Holding 26
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,008,014,176
Total number of portfolio holdings 26
Portfolio turnover rate 8%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.6%
Equity 40.0%
Large blend 18.1%
U.S. large cap 13.4%
Emerging-market equity 2.9%
U.S. mid cap 2.8%
U.S. small cap 1.9%
International equity 0.9%
Fixed income 58.6%
Intermediate bond 58.6%
Short-term investments and other 1.4%
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.
C000022600 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Moderate Portfolio
Class Name Series II
Trading Symbol JAIWX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Moderate Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Moderate Portfolio
(Series II/JAIWX)		 $19 0.37%
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.37%
Net Assets $ 1,008,014,176
Holdings Count | Holding 26
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,008,014,176
Total number of portfolio holdings 26
Portfolio turnover rate 8%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.6%
Equity 40.0%
Large blend 18.1%
U.S. large cap 13.4%
Emerging-market equity 2.9%
U.S. mid cap 2.8%
U.S. small cap 1.9%
International equity 0.9%
Fixed income 58.6%
Intermediate bond 58.6%
Short-term investments and other 1.4%
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.
C000022598 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Moderate Portfolio
Class Name Series NAV
Trading Symbol JAIVX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Moderate Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Moderate Portfolio
(Series NAV/JAIVX)		 $6 0.12%
Expenses Paid, Amount $ 6
Expense Ratio, Percent 0.12%
Net Assets $ 1,008,014,176
Holdings Count | Holding 26
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,008,014,176
Total number of portfolio holdings 26
Portfolio turnover rate 8%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.6%
Equity 40.0%
Large blend 18.1%
U.S. large cap 13.4%
Emerging-market equity 2.9%
U.S. mid cap 2.8%
U.S. small cap 1.9%
International equity 0.9%
Fixed income 58.6%
Intermediate bond 58.6%
Short-term investments and other 1.4%
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.
C000022604 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Conservative Portfolio
Class Name Series I
Trading Symbol JELCX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Conservative Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Conservative Portfolio
(Series I/JELCX)		 $10 0.19%
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.19%
Net Assets $ 487,321,895
Holdings Count | Holding 23
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $487,321,895
Total number of portfolio holdings 23
Portfolio turnover rate 5%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.9%
Equity 20.0%
Large blend 9.1%
U.S. large cap 7.2%
U.S. mid cap 1.4%
Emerging-market equity 1.3%
U.S. small cap 1.0%
Fixed income 78.9%
Intermediate bond 78.9%
Short-term investments and other 1.1%
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.
C000022605 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Conservative Portfolio
Class Name Series II
Trading Symbol JAISX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Conservative Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Conservative Portfolio
(Series II/JAISX)		 $20 0.39%
Expenses Paid, Amount $ 20
Expense Ratio, Percent 0.39%
Net Assets $ 487,321,895
Holdings Count | Holding 23
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $487,321,895
Total number of portfolio holdings 23
Portfolio turnover rate 5%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.9%
Equity 20.0%
Large blend 9.1%
U.S. large cap 7.2%
U.S. mid cap 1.4%
Emerging-market equity 1.3%
U.S. small cap 1.0%
Fixed income 78.9%
Intermediate bond 78.9%
Short-term investments and other 1.1%
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.
C000022603 [Member]  
Shareholder Report [Line Items]  
Fund Name Managed Volatility Conservative Portfolio
Class Name Series NAV
Trading Symbol JAIUX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Managed Volatility Conservative Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Managed Volatility Conservative Portfolio
(Series NAV/JAIUX)		 $7 0.14%
Expenses Paid, Amount $ 7
Expense Ratio, Percent 0.14%
Net Assets $ 487,321,895
Holdings Count | Holding 23
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $487,321,895
Total number of portfolio holdings 23
Portfolio turnover rate 5%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 98.9%
Equity 20.0%
Large blend 9.1%
U.S. large cap 7.2%
U.S. mid cap 1.4%
Emerging-market equity 1.3%
U.S. small cap 1.0%
Fixed income 78.9%
Intermediate bond 78.9%
Short-term investments and other 1.1%
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.
C000022621 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Cap Index Trust
Class Name Series I
Trading Symbol JECIX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Cap Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Cap Index Trust
(Series I/JECIX)		 $23 0.46%
Expenses Paid, Amount $ 23
Expense Ratio, Percent 0.46%
Net Assets $ 1,177,225,214
Holdings Count | Holding 403
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,177,225,214
Total number of portfolio holdings 403
Portfolio turnover rate 5%
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.
Top Ten Holdings
Interactive Brokers Group, Inc., Class A 0.8%
EMCOR Group, Inc. 0.8%
Guidewire Software, Inc. 0.7%
RB Global, Inc. 0.7%
Flex, Ltd. 0.6%
Casey's General Stores, Inc. 0.6%
Comfort Systems USA, Inc. 0.6%
Curtiss-Wright Corp. 0.6%
Pure Storage, Inc., Class A 0.6%
U.S. Foods Holding Corp. 0.6%
Sector Composition
Industrials 22.0%
Financials 17.6%
Consumer discretionary 12.8%
Information technology 11.3%
Health care 8.3%
Real estate 6.6%
Materials 5.2%
Consumer staples 5.2%
Energy 3.6%
Utilities 2.8%
Communication services 1.2%
Short-term investments and other 3.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Interactive Brokers Group, Inc., Class A 0.8%
EMCOR Group, Inc. 0.8%
Guidewire Software, Inc. 0.7%
RB Global, Inc. 0.7%
Flex, Ltd. 0.6%
Casey's General Stores, Inc. 0.6%
Comfort Systems USA, Inc. 0.6%
Curtiss-Wright Corp. 0.6%
Pure Storage, Inc., Class A 0.6%
U.S. Foods Holding Corp. 0.6%
C000022622 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Cap Index Trust
Class Name Series II
Trading Symbol JAEZX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Cap Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Cap Index Trust
(Series II/JAEZX)		 $33 0.66%
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.66%
Net Assets $ 1,177,225,214
Holdings Count | Holding 403
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,177,225,214
Total number of portfolio holdings 403
Portfolio turnover rate 5%
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.
Top Ten Holdings
Interactive Brokers Group, Inc., Class A 0.8%
EMCOR Group, Inc. 0.8%
Guidewire Software, Inc. 0.7%
RB Global, Inc. 0.7%
Flex, Ltd. 0.6%
Casey's General Stores, Inc. 0.6%
Comfort Systems USA, Inc. 0.6%
Curtiss-Wright Corp. 0.6%
Pure Storage, Inc., Class A 0.6%
U.S. Foods Holding Corp. 0.6%
Sector Composition
Industrials 22.0%
Financials 17.6%
Consumer discretionary 12.8%
Information technology 11.3%
Health care 8.3%
Real estate 6.6%
Materials 5.2%
Consumer staples 5.2%
Energy 3.6%
Utilities 2.8%
Communication services 1.2%
Short-term investments and other 3.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Interactive Brokers Group, Inc., Class A 0.8%
EMCOR Group, Inc. 0.8%
Guidewire Software, Inc. 0.7%
RB Global, Inc. 0.7%
Flex, Ltd. 0.6%
Casey's General Stores, Inc. 0.6%
Comfort Systems USA, Inc. 0.6%
Curtiss-Wright Corp. 0.6%
Pure Storage, Inc., Class A 0.6%
U.S. Foods Holding Corp. 0.6%
C000022620 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Cap Index Trust
Class Name Series NAV
Trading Symbol JAEYX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Cap Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Cap Index Trust
(Series NAV/JAEYX)		 $20 0.41%
Expenses Paid, Amount $ 20
Expense Ratio, Percent 0.41%
Net Assets $ 1,177,225,214
Holdings Count | Holding 403
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,177,225,214
Total number of portfolio holdings 403
Portfolio turnover rate 5%
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.
Top Ten Holdings
Interactive Brokers Group, Inc., Class A 0.8%
EMCOR Group, Inc. 0.8%
Guidewire Software, Inc. 0.7%
RB Global, Inc. 0.7%
Flex, Ltd. 0.6%
Casey's General Stores, Inc. 0.6%
Comfort Systems USA, Inc. 0.6%
Curtiss-Wright Corp. 0.6%
Pure Storage, Inc., Class A 0.6%
U.S. Foods Holding Corp. 0.6%
Sector Composition
Industrials 22.0%
Financials 17.6%
Consumer discretionary 12.8%
Information technology 11.3%
Health care 8.3%
Real estate 6.6%
Materials 5.2%
Consumer staples 5.2%
Energy 3.6%
Utilities 2.8%
Communication services 1.2%
Short-term investments and other 3.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Interactive Brokers Group, Inc., Class A 0.8%
EMCOR Group, Inc. 0.8%
Guidewire Software, Inc. 0.7%
RB Global, Inc. 0.7%
Flex, Ltd. 0.6%
Casey's General Stores, Inc. 0.6%
Comfort Systems USA, Inc. 0.6%
Curtiss-Wright Corp. 0.6%
Pure Storage, Inc., Class A 0.6%
U.S. Foods Holding Corp. 0.6%
C000022625 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Cap Growth Trust
Class Name Series I
Trading Symbol JAETX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Cap Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Cap Growth Trust
(Series I/JAETX)		 $47 0.93%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.93%
Net Assets $ 649,992,276
Holdings Count | Holding 75
Investment Company Portfolio Turnover 83.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $649,992,276
Total number of portfolio holdings 75
Portfolio turnover rate 83%
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.
Top Ten Holdings
Live Nation Entertainment, Inc. 3.5%
Liberty Media Corp.-Liberty Formula One, Series C 3.4%
Celestica, Inc. 3.0%
Natera, Inc. 2.8%
DraftKings, Inc., Class A 2.8%
Tradeweb Markets, Inc., Class A 2.7%
Royal Caribbean Cruises, Ltd. 2.6%
Cloudflare, Inc., Class A 2.6%
GoDaddy, Inc., Class A 2.3%
Marriott International, Inc., Class A 2.3%
Sector Composition
Information technology 23.0%
Consumer discretionary 21.2%
Health care 13.6%
Financials 10.9%
Industrials 10.2%
Communication services 8.4%
Energy 3.4%
Real estate 3.2%
Consumer staples 2.9%
Utilities 1.6%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Live Nation Entertainment, Inc. 3.5%
Liberty Media Corp.-Liberty Formula One, Series C 3.4%
Celestica, Inc. 3.0%
Natera, Inc. 2.8%
DraftKings, Inc., Class A 2.8%
Tradeweb Markets, Inc., Class A 2.7%
Royal Caribbean Cruises, Ltd. 2.6%
Cloudflare, Inc., Class A 2.6%
GoDaddy, Inc., Class A 2.3%
Marriott International, Inc., Class A 2.3%
C000022626 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Cap Growth Trust
Class Name Series II
Trading Symbol JAEUX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Cap Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Cap Growth Trust
(Series II/JAEUX)		 $57 1.13%
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.13%
Net Assets $ 649,992,276
Holdings Count | Holding 75
Investment Company Portfolio Turnover 83.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $649,992,276
Total number of portfolio holdings 75
Portfolio turnover rate 83%
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.
Top Ten Holdings
Live Nation Entertainment, Inc. 3.5%
Liberty Media Corp.-Liberty Formula One, Series C 3.4%
Celestica, Inc. 3.0%
Natera, Inc. 2.8%
DraftKings, Inc., Class A 2.8%
Tradeweb Markets, Inc., Class A 2.7%
Royal Caribbean Cruises, Ltd. 2.6%
Cloudflare, Inc., Class A 2.6%
GoDaddy, Inc., Class A 2.3%
Marriott International, Inc., Class A 2.3%
Sector Composition
Information technology 23.0%
Consumer discretionary 21.2%
Health care 13.6%
Financials 10.9%
Industrials 10.2%
Communication services 8.4%
Energy 3.4%
Real estate 3.2%
Consumer staples 2.9%
Utilities 1.6%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Live Nation Entertainment, Inc. 3.5%
Liberty Media Corp.-Liberty Formula One, Series C 3.4%
Celestica, Inc. 3.0%
Natera, Inc. 2.8%
DraftKings, Inc., Class A 2.8%
Tradeweb Markets, Inc., Class A 2.7%
Royal Caribbean Cruises, Ltd. 2.6%
Cloudflare, Inc., Class A 2.6%
GoDaddy, Inc., Class A 2.3%
Marriott International, Inc., Class A 2.3%
C000022624 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Cap Growth Trust
Class Name Series NAV
Trading Symbol JAEVX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Cap Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Cap Growth Trust
(Series NAV/JAEVX)		 $45 0.88%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.88%
Net Assets $ 649,992,276
Holdings Count | Holding 75
Investment Company Portfolio Turnover 83.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $649,992,276
Total number of portfolio holdings 75
Portfolio turnover rate 83%
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.
Top Ten Holdings
Live Nation Entertainment, Inc. 3.5%
Liberty Media Corp.-Liberty Formula One, Series C 3.4%
Celestica, Inc. 3.0%
Natera, Inc. 2.8%
DraftKings, Inc., Class A 2.8%
Tradeweb Markets, Inc., Class A 2.7%
Royal Caribbean Cruises, Ltd. 2.6%
Cloudflare, Inc., Class A 2.6%
GoDaddy, Inc., Class A 2.3%
Marriott International, Inc., Class A 2.3%
Sector Composition
Information technology 23.0%
Consumer discretionary 21.2%
Health care 13.6%
Financials 10.9%
Industrials 10.2%
Communication services 8.4%
Energy 3.4%
Real estate 3.2%
Consumer staples 2.9%
Utilities 1.6%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Live Nation Entertainment, Inc. 3.5%
Liberty Media Corp.-Liberty Formula One, Series C 3.4%
Celestica, Inc. 3.0%
Natera, Inc. 2.8%
DraftKings, Inc., Class A 2.8%
Tradeweb Markets, Inc., Class A 2.7%
Royal Caribbean Cruises, Ltd. 2.6%
Cloudflare, Inc., Class A 2.6%
GoDaddy, Inc., Class A 2.3%
Marriott International, Inc., Class A 2.3%
C000022637 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Value Trust
Class Name Series I
Trading Symbol JEMUX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Value Trust
(Series I/JEMUX)		 $45 0.91%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.91%
Net Assets $ 578,298,948
Holdings Count | Holding 118
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $578,298,948
Total number of portfolio holdings 118
Portfolio turnover rate 31%
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.
Top Ten Holdings
RenaissanceRe Holdings, Ltd. 1.7%
Zimmer Biomet Holdings, Inc. 1.7%
API Group Corp. 1.7%
Corning, Inc. 1.7%
Baxter International, Inc. 1.6%
Sun Communities, Inc. 1.5%
Keysight Technologies, Inc. 1.5%
Kenvue, Inc. 1.5%
Norfolk Southern Corp. 1.5%
Expand Energy Corp. 1.5%
Sector Composition
Financials 20.1%
Industrials 17.2%
Information technology 10.9%
Health care 10.8%
Real estate 7.8%
Energy 7.3%
Utilities 6.4%
Consumer discretionary 6.3%
Materials 5.5%
Consumer staples 3.9%
Communication services 2.0%
Short-term investments and other 1.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
RenaissanceRe Holdings, Ltd. 1.7%
Zimmer Biomet Holdings, Inc. 1.7%
API Group Corp. 1.7%
Corning, Inc. 1.7%
Baxter International, Inc. 1.6%
Sun Communities, Inc. 1.5%
Keysight Technologies, Inc. 1.5%
Kenvue, Inc. 1.5%
Norfolk Southern Corp. 1.5%
Expand Energy Corp. 1.5%
C000022638 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Value Trust
Class Name Series II
Trading Symbol JAGYX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Value Trust
(Series II/JAGYX)		 $54 1.11%
Expenses Paid, Amount $ 54
Expense Ratio, Percent 1.11%
Net Assets $ 578,298,948
Holdings Count | Holding 118
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $578,298,948
Total number of portfolio holdings 118
Portfolio turnover rate 31%
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.
Top Ten Holdings
RenaissanceRe Holdings, Ltd. 1.7%
Zimmer Biomet Holdings, Inc. 1.7%
API Group Corp. 1.7%
Corning, Inc. 1.7%
Baxter International, Inc. 1.6%
Sun Communities, Inc. 1.5%
Keysight Technologies, Inc. 1.5%
Kenvue, Inc. 1.5%
Norfolk Southern Corp. 1.5%
Expand Energy Corp. 1.5%
Sector Composition
Financials 20.1%
Industrials 17.2%
Information technology 10.9%
Health care 10.8%
Real estate 7.8%
Energy 7.3%
Utilities 6.4%
Consumer discretionary 6.3%
Materials 5.5%
Consumer staples 3.9%
Communication services 2.0%
Short-term investments and other 1.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
RenaissanceRe Holdings, Ltd. 1.7%
Zimmer Biomet Holdings, Inc. 1.7%
API Group Corp. 1.7%
Corning, Inc. 1.7%
Baxter International, Inc. 1.6%
Sun Communities, Inc. 1.5%
Keysight Technologies, Inc. 1.5%
Kenvue, Inc. 1.5%
Norfolk Southern Corp. 1.5%
Expand Energy Corp. 1.5%
C000022636 [Member]  
Shareholder Report [Line Items]  
Fund Name Mid Value Trust
Class Name Series NAV
Trading Symbol JAGWX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Mid Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Value Trust
(Series NAV/JAGWX)		 $42 0.86%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.86%
Net Assets $ 578,298,948
Holdings Count | Holding 118
Investment Company Portfolio Turnover 31.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $578,298,948
Total number of portfolio holdings 118
Portfolio turnover rate 31%
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.
Top Ten Holdings
RenaissanceRe Holdings, Ltd. 1.7%
Zimmer Biomet Holdings, Inc. 1.7%
API Group Corp. 1.7%
Corning, Inc. 1.7%
Baxter International, Inc. 1.6%
Sun Communities, Inc. 1.5%
Keysight Technologies, Inc. 1.5%
Kenvue, Inc. 1.5%
Norfolk Southern Corp. 1.5%
Expand Energy Corp. 1.5%
Sector Composition
Financials 20.1%
Industrials 17.2%
Information technology 10.9%
Health care 10.8%
Real estate 7.8%
Energy 7.3%
Utilities 6.4%
Consumer discretionary 6.3%
Materials 5.5%
Consumer staples 3.9%
Communication services 2.0%
Short-term investments and other 1.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
RenaissanceRe Holdings, Ltd. 1.7%
Zimmer Biomet Holdings, Inc. 1.7%
API Group Corp. 1.7%
Corning, Inc. 1.7%
Baxter International, Inc. 1.6%
Sun Communities, Inc. 1.5%
Keysight Technologies, Inc. 1.5%
Kenvue, Inc. 1.5%
Norfolk Southern Corp. 1.5%
Expand Energy Corp. 1.5%
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 semiannual shareholder report contains important information about the Money Market Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Money Market Trust
(Series I/JHOXX)		 $17 0.33%
Expenses Paid, Amount $ 17
Expense Ratio, Percent 0.33%
Net Assets $ 2,410,321,230
Holdings Count | Holding 116
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,410,321,230
Total number of portfolio holdings 116
Weighted Average Maturity 48 Days
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
U.S. Government Agency 53.7%
U.S. Government 29.1%
Repurchase agreement 17.2%
Maturity Composition
Graphical Representation - Allocation 1 Chart
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 semiannual shareholder report contains important information about the Money Market Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Money Market Trust
(Series II/JAAXX)		 $27 0.53%
Expenses Paid, Amount $ 27
Expense Ratio, Percent 0.53%
Net Assets $ 2,410,321,230
Holdings Count | Holding 116
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,410,321,230
Total number of portfolio holdings 116
Weighted Average Maturity 48 Days
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
U.S. Government Agency 53.7%
U.S. Government 29.1%
Repurchase agreement 17.2%
Maturity Composition
Graphical Representation - Allocation 1 Chart
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.
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 semiannual shareholder report contains important information about the Money Market Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Money Market Trust
(Series NAV/JABXX)		 $14 0.28%
Expenses Paid, Amount $ 14
Expense Ratio, Percent 0.28%
Net Assets $ 2,410,321,230
Holdings Count | Holding 116
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,410,321,230
Total number of portfolio holdings 116
Weighted Average Maturity 48 Days
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
U.S. Government Agency 53.7%
U.S. Government 29.1%
Repurchase agreement 17.2%
Maturity Composition
Graphical Representation - Allocation 1 Chart
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.
C000022665 [Member]  
Shareholder Report [Line Items]  
Fund Name Fundamental All Cap Core Trust
Class Name Series I
Trading Symbol JEQAX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Fundamental All Cap Core Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Fundamental All Cap Core Trust
(Series I/JEQAX)		 $37 0.75%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.75%
Net Assets $ 2,500,061,760
Holdings Count | Holding 49
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,500,061,760
Total number of portfolio holdings 49
Portfolio turnover rate 13%
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.
Top Ten Holdings
Amazon.com, Inc. 8.4%
NVIDIA Corp. 6.5%
Alphabet, Inc., Class A 5.0%
Cheniere Energy, Inc. 4.0%
Apple, Inc. 4.0%
Workday, Inc., Class A 3.9%
KKR & Company, Inc. 3.8%
First Hawaiian, Inc. 3.6%
Lennar Corp., Class A 3.4%
Hologic, Inc. 3.3%
Sector Composition
Information technology 30.0%
Consumer discretionary 22.3%
Financials 13.1%
Health care 10.2%
Communication services 9.7%
Energy 5.1%
Consumer staples 3.7%
Industrials 3.4%
Real estate 2.1%
Short-term investments and other 0.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Amazon.com, Inc. 8.4%
NVIDIA Corp. 6.5%
Alphabet, Inc., Class A 5.0%
Cheniere Energy, Inc. 4.0%
Apple, Inc. 4.0%
Workday, Inc., Class A 3.9%
KKR & Company, Inc. 3.8%
First Hawaiian, Inc. 3.6%
Lennar Corp., Class A 3.4%
Hologic, Inc. 3.3%
C000022666 [Member]  
Shareholder Report [Line Items]  
Fund Name Fundamental All Cap Core Trust
Class Name Series II
Trading Symbol JFLGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Fundamental All Cap Core Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Fundamental All Cap Core Trust
(Series II/JFLGX)		 $47 0.95%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.95%
Net Assets $ 2,500,061,760
Holdings Count | Holding 49
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,500,061,760
Total number of portfolio holdings 49
Portfolio turnover rate 13%
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.
Top Ten Holdings
Amazon.com, Inc. 8.4%
NVIDIA Corp. 6.5%
Alphabet, Inc., Class A 5.0%
Cheniere Energy, Inc. 4.0%
Apple, Inc. 4.0%
Workday, Inc., Class A 3.9%
KKR & Company, Inc. 3.8%
First Hawaiian, Inc. 3.6%
Lennar Corp., Class A 3.4%
Hologic, Inc. 3.3%
Sector Composition
Information technology 30.0%
Consumer discretionary 22.3%
Financials 13.1%
Health care 10.2%
Communication services 9.7%
Energy 5.1%
Consumer staples 3.7%
Industrials 3.4%
Real estate 2.1%
Short-term investments and other 0.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Amazon.com, Inc. 8.4%
NVIDIA Corp. 6.5%
Alphabet, Inc., Class A 5.0%
Cheniere Energy, Inc. 4.0%
Apple, Inc. 4.0%
Workday, Inc., Class A 3.9%
KKR & Company, Inc. 3.8%
First Hawaiian, Inc. 3.6%
Lennar Corp., Class A 3.4%
Hologic, Inc. 3.3%
C000022664 [Member]  
Shareholder Report [Line Items]  
Fund Name Fundamental All Cap Core Trust
Class Name Series NAV
Trading Symbol JADDX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Fundamental All Cap Core Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Fundamental All Cap Core Trust
(Series NAV/JADDX)		 $35 0.70%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.70%
Net Assets $ 2,500,061,760
Holdings Count | Holding 49
Investment Company Portfolio Turnover 13.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,500,061,760
Total number of portfolio holdings 49
Portfolio turnover rate 13%
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.
Top Ten Holdings
Amazon.com, Inc. 8.4%
NVIDIA Corp. 6.5%
Alphabet, Inc., Class A 5.0%
Cheniere Energy, Inc. 4.0%
Apple, Inc. 4.0%
Workday, Inc., Class A 3.9%
KKR & Company, Inc. 3.8%
First Hawaiian, Inc. 3.6%
Lennar Corp., Class A 3.4%
Hologic, Inc. 3.3%
Sector Composition
Information technology 30.0%
Consumer discretionary 22.3%
Financials 13.1%
Health care 10.2%
Communication services 9.7%
Energy 5.1%
Consumer staples 3.7%
Industrials 3.4%
Real estate 2.1%
Short-term investments and other 0.4%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Amazon.com, Inc. 8.4%
NVIDIA Corp. 6.5%
Alphabet, Inc., Class A 5.0%
Cheniere Energy, Inc. 4.0%
Apple, Inc. 4.0%
Workday, Inc., Class A 3.9%
KKR & Company, Inc. 3.8%
First Hawaiian, Inc. 3.6%
Lennar Corp., Class A 3.4%
Hologic, Inc. 3.3%
C000117969 [Member]  
Shareholder Report [Line Items]  
Fund Name International Equity Index Trust
Class Name Series I
Trading Symbol JIEQX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the International Equity Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
International Equity Index Trust
(Series I/JIEQX)		 $22 0.40%
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.40%
Net Assets $ 1,074,017,266
Holdings Count | Holding 1,995
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,074,017,266
Total number of portfolio holdings 1,995
Portfolio turnover rate 2%
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.
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 3.0%
Tencent Holdings, Ltd. 1.4%
SAP SE 1.1%
ASML Holding NV 1.1%
Nestle SA 0.9%
Alibaba Group Holding, Ltd. 0.8%
Novartis AG 0.8%
Roche Holding AG 0.8%
Novo Nordisk A/S, Class B 0.7%
AstraZeneca PLC 0.7%
Sector Composition
Financials 24.5%
Industrials 14.7%
Information technology 13.2%
Consumer discretionary 10.1%
Health care 8.0%
Consumer staples 6.6%
Communication services 6.3%
Materials 6.2%
Energy 4.5%
Utilities 3.1%
Real estate 1.6%
Short-term investments and other 1.2%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 3.0%
Tencent Holdings, Ltd. 1.4%
SAP SE 1.1%
ASML Holding NV 1.1%
Nestle SA 0.9%
Alibaba Group Holding, Ltd. 0.8%
Novartis AG 0.8%
Roche Holding AG 0.8%
Novo Nordisk A/S, Class B 0.7%
AstraZeneca PLC 0.7%
C000117970 [Member]  
Shareholder Report [Line Items]  
Fund Name International Equity Index Trust
Class Name Series II
Trading Symbol JAJEX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the International Equity Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
International Equity Index Trust
(Series II/JAJEX)		 $33 0.60%
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.60%
Net Assets $ 1,074,017,266
Holdings Count | Holding 1,995
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,074,017,266
Total number of portfolio holdings 1,995
Portfolio turnover rate 2%
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.
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 3.0%
Tencent Holdings, Ltd. 1.4%
SAP SE 1.1%
ASML Holding NV 1.1%
Nestle SA 0.9%
Alibaba Group Holding, Ltd. 0.8%
Novartis AG 0.8%
Roche Holding AG 0.8%
Novo Nordisk A/S, Class B 0.7%
AstraZeneca PLC 0.7%
Sector Composition
Financials 24.5%
Industrials 14.7%
Information technology 13.2%
Consumer discretionary 10.1%
Health care 8.0%
Consumer staples 6.6%
Communication services 6.3%
Materials 6.2%
Energy 4.5%
Utilities 3.1%
Real estate 1.6%
Short-term investments and other 1.2%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 3.0%
Tencent Holdings, Ltd. 1.4%
SAP SE 1.1%
ASML Holding NV 1.1%
Nestle SA 0.9%
Alibaba Group Holding, Ltd. 0.8%
Novartis AG 0.8%
Roche Holding AG 0.8%
Novo Nordisk A/S, Class B 0.7%
AstraZeneca PLC 0.7%
C000022668 [Member]  
Shareholder Report [Line Items]  
Fund Name International Equity Index Trust
Class Name Series NAV
Trading Symbol JVANX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the International Equity Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
International Equity Index Trust
(Series NAV/JVANX)		 $19 0.35%
Expenses Paid, Amount $ 19
Expense Ratio, Percent 0.35%
Net Assets $ 1,074,017,266
Holdings Count | Holding 1,995
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,074,017,266
Total number of portfolio holdings 1,995
Portfolio turnover rate 2%
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.
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 3.0%
Tencent Holdings, Ltd. 1.4%
SAP SE 1.1%
ASML Holding NV 1.1%
Nestle SA 0.9%
Alibaba Group Holding, Ltd. 0.8%
Novartis AG 0.8%
Roche Holding AG 0.8%
Novo Nordisk A/S, Class B 0.7%
AstraZeneca PLC 0.7%
Sector Composition
Financials 24.5%
Industrials 14.7%
Information technology 13.2%
Consumer discretionary 10.1%
Health care 8.0%
Consumer staples 6.6%
Communication services 6.3%
Materials 6.2%
Energy 4.5%
Utilities 3.1%
Real estate 1.6%
Short-term investments and other 1.2%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 3.0%
Tencent Holdings, Ltd. 1.4%
SAP SE 1.1%
ASML Holding NV 1.1%
Nestle SA 0.9%
Alibaba Group Holding, Ltd. 0.8%
Novartis AG 0.8%
Roche Holding AG 0.8%
Novo Nordisk A/S, Class B 0.7%
AstraZeneca PLC 0.7%
C000022685 [Member]  
Shareholder Report [Line Items]  
Fund Name International Small Company Trust
Class Name Series I
Trading Symbol JAJCX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the International Small Company Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
International Small Company Trust
(Series I/JAJCX)		 $58 1.05%
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.05%
Net Assets $ 105,380,020
Holdings Count | Holding 2,830
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $105,380,020
Total number of portfolio holdings 2,830
Portfolio turnover rate 7%
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.
Top Ten Holdings
Swiss Prime Site AG 0.5%
BAWAG Group AG 0.4%
Belimo Holding AG 0.4%
PSP Swiss Property AG 0.4%
SPIE SA 0.3%
Baloise Holding AG 0.3%
Hensoldt AG 0.3%
Gaztransport Et Technigaz SA 0.3%
LEG Immobilien SE 0.3%
Orion OYJ, Class B 0.3%
Sector Composition
Industrials 24.3%
Financials 14.3%
Materials 12.7%
Consumer discretionary 12.2%
Information technology 7.9%
Consumer staples 5.4%
Health care 5.4%
Energy 4.8%
Real estate 4.5%
Communication services 3.6%
Utilities 3.4%
Short-term investments and other 1.5%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Swiss Prime Site AG 0.5%
BAWAG Group AG 0.4%
Belimo Holding AG 0.4%
PSP Swiss Property AG 0.4%
SPIE SA 0.3%
Baloise Holding AG 0.3%
Hensoldt AG 0.3%
Gaztransport Et Technigaz SA 0.3%
LEG Immobilien SE 0.3%
Orion OYJ, Class B 0.3%
C000022686 [Member]  
Shareholder Report [Line Items]  
Fund Name International Small Company Trust
Class Name Series II
Trading Symbol JAADX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the International Small Company Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
International Small Company Trust
(Series II/JAADX)		 $69 1.25%
Expenses Paid, Amount $ 69
Expense Ratio, Percent 1.25%
Net Assets $ 105,380,020
Holdings Count | Holding 2,830
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $105,380,020
Total number of portfolio holdings 2,830
Portfolio turnover rate 7%
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.
Top Ten Holdings
Swiss Prime Site AG 0.5%
BAWAG Group AG 0.4%
Belimo Holding AG 0.4%
PSP Swiss Property AG 0.4%
SPIE SA 0.3%
Baloise Holding AG 0.3%
Hensoldt AG 0.3%
Gaztransport Et Technigaz SA 0.3%
LEG Immobilien SE 0.3%
Orion OYJ, Class B 0.3%
Sector Composition
Industrials 24.3%
Financials 14.3%
Materials 12.7%
Consumer discretionary 12.2%
Information technology 7.9%
Consumer staples 5.4%
Health care 5.4%
Energy 4.8%
Real estate 4.5%
Communication services 3.6%
Utilities 3.4%
Short-term investments and other 1.5%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Swiss Prime Site AG 0.5%
BAWAG Group AG 0.4%
Belimo Holding AG 0.4%
PSP Swiss Property AG 0.4%
SPIE SA 0.3%
Baloise Holding AG 0.3%
Hensoldt AG 0.3%
Gaztransport Et Technigaz SA 0.3%
LEG Immobilien SE 0.3%
Orion OYJ, Class B 0.3%
C000022684 [Member]  
Shareholder Report [Line Items]  
Fund Name International Small Company Trust
Class Name Series NAV
Trading Symbol JAJDX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the International Small Company Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
International Small Company Trust
(Series NAV/JAJDX)		 $55 1.00%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.00%
Net Assets $ 105,380,020
Holdings Count | Holding 2,830
Investment Company Portfolio Turnover 7.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $105,380,020
Total number of portfolio holdings 2,830
Portfolio turnover rate 7%
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.
Top Ten Holdings
Swiss Prime Site AG 0.5%
BAWAG Group AG 0.4%
Belimo Holding AG 0.4%
PSP Swiss Property AG 0.4%
SPIE SA 0.3%
Baloise Holding AG 0.3%
Hensoldt AG 0.3%
Gaztransport Et Technigaz SA 0.3%
LEG Immobilien SE 0.3%
Orion OYJ, Class B 0.3%
Sector Composition
Industrials 24.3%
Financials 14.3%
Materials 12.7%
Consumer discretionary 12.2%
Information technology 7.9%
Consumer staples 5.4%
Health care 5.4%
Energy 4.8%
Real estate 4.5%
Communication services 3.6%
Utilities 3.4%
Short-term investments and other 1.5%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Swiss Prime Site AG 0.5%
BAWAG Group AG 0.4%
Belimo Holding AG 0.4%
PSP Swiss Property AG 0.4%
SPIE SA 0.3%
Baloise Holding AG 0.3%
Hensoldt AG 0.3%
Gaztransport Et Technigaz SA 0.3%
LEG Immobilien SE 0.3%
Orion OYJ, Class B 0.3%
C000022689 [Member]  
Shareholder Report [Line Items]  
Fund Name Disciplined Value International Trust
Class Name Series I
Trading Symbol JAJHX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Disciplined Value International Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Disciplined Value International Trust
(Series I/JAJHX)		 $48 0.85%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.85%
Net Assets $ 302,471,391
Holdings Count | Holding 85
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $302,471,391
Total number of portfolio holdings 85
Portfolio turnover rate 36%
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.
Top Ten Holdings
BAE Systems PLC 3.0%
The Weir Group PLC 2.8%
Heineken NV 2.3%
NAVER Corp. 2.3%
Shell PLC 2.3%
Euronext NV 2.2%
Danske Bank A/S 2.2%
Sandoz Group AG 2.1%
Alibaba Group Holding, Ltd. 2.0%
Enel SpA 1.9%
Sector Composition
Financials 22.3%
Industrials 21.4%
Health care 8.7%
Materials 8.0%
Energy 7.8%
Consumer staples 7.4%
Consumer discretionary 6.8%
Communication services 6.5%
Information technology 6.3%
Utilities 1.9%
Short-term investments and other 2.9%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
BAE Systems PLC 3.0%
The Weir Group PLC 2.8%
Heineken NV 2.3%
NAVER Corp. 2.3%
Shell PLC 2.3%
Euronext NV 2.2%
Danske Bank A/S 2.2%
Sandoz Group AG 2.1%
Alibaba Group Holding, Ltd. 2.0%
Enel SpA 1.9%
C000022690 [Member]  
Shareholder Report [Line Items]  
Fund Name Disciplined Value International Trust
Class Name Series II
Trading Symbol JAJIX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Disciplined Value International Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Disciplined Value International Trust
(Series II/JAJIX)		 $59 1.05%
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.05%
Net Assets $ 302,471,391
Holdings Count | Holding 85
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $302,471,391
Total number of portfolio holdings 85
Portfolio turnover rate 36%
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.
Top Ten Holdings
BAE Systems PLC 3.0%
The Weir Group PLC 2.8%
Heineken NV 2.3%
NAVER Corp. 2.3%
Shell PLC 2.3%
Euronext NV 2.2%
Danske Bank A/S 2.2%
Sandoz Group AG 2.1%
Alibaba Group Holding, Ltd. 2.0%
Enel SpA 1.9%
Sector Composition
Financials 22.3%
Industrials 21.4%
Health care 8.7%
Materials 8.0%
Energy 7.8%
Consumer staples 7.4%
Consumer discretionary 6.8%
Communication services 6.5%
Information technology 6.3%
Utilities 1.9%
Short-term investments and other 2.9%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
BAE Systems PLC 3.0%
The Weir Group PLC 2.8%
Heineken NV 2.3%
NAVER Corp. 2.3%
Shell PLC 2.3%
Euronext NV 2.2%
Danske Bank A/S 2.2%
Sandoz Group AG 2.1%
Alibaba Group Holding, Ltd. 2.0%
Enel SpA 1.9%
C000022688 [Member]  
Shareholder Report [Line Items]  
Fund Name Disciplined Value International Trust
Class Name Series NAV
Trading Symbol JAJJX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Disciplined Value International Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Disciplined Value International Trust
(Series NAV/JAJJX)		 $45 0.80%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.80%
Net Assets $ 302,471,391
Holdings Count | Holding 85
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $302,471,391
Total number of portfolio holdings 85
Portfolio turnover rate 36%
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.
Top Ten Holdings
BAE Systems PLC 3.0%
The Weir Group PLC 2.8%
Heineken NV 2.3%
NAVER Corp. 2.3%
Shell PLC 2.3%
Euronext NV 2.2%
Danske Bank A/S 2.2%
Sandoz Group AG 2.1%
Alibaba Group Holding, Ltd. 2.0%
Enel SpA 1.9%
Sector Composition
Financials 22.3%
Industrials 21.4%
Health care 8.7%
Materials 8.0%
Energy 7.8%
Consumer staples 7.4%
Consumer discretionary 6.8%
Communication services 6.5%
Information technology 6.3%
Utilities 1.9%
Short-term investments and other 2.9%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
BAE Systems PLC 3.0%
The Weir Group PLC 2.8%
Heineken NV 2.3%
NAVER Corp. 2.3%
Shell PLC 2.3%
Euronext NV 2.2%
Danske Bank A/S 2.2%
Sandoz Group AG 2.1%
Alibaba Group Holding, Ltd. 2.0%
Enel SpA 1.9%
C000022704 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Index Trust
Class Name Series I
Trading Symbol JESIX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Index Trust
(Series I/JESIX)		 $26 0.53%
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.53%
Net Assets $ 505,020,518
Holdings Count | Holding 1,826
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $505,020,518
Total number of portfolio holdings 1,826
Portfolio turnover rate 8%
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.
Top Ten Holdings
Credo Technology Group Holding, Ltd. 0.5%
Fabrinet 0.4%
IonQ, Inc. 0.4%
Hims & Hers Health, Inc. 0.4%
HealthEquity, Inc. 0.3%
The Ensign Group, Inc. 0.3%
Fluor Corp. 0.3%
Blueprint Medicines Corp. 0.3%
AeroVironment, Inc. 0.3%
Brinker International, Inc. 0.3%
Sector Composition
Financials 18.6%
Industrials 16.4%
Health care 15.4%
Information technology 14.1%
Consumer discretionary 9.7%
Real estate 5.9%
Energy 4.7%
Materials 3.6%
Utilities 3.1%
Communication services 2.5%
Consumer staples 2.2%
Short-term investments and other 3.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Credo Technology Group Holding, Ltd. 0.5%
Fabrinet 0.4%
IonQ, Inc. 0.4%
Hims & Hers Health, Inc. 0.4%
HealthEquity, Inc. 0.3%
The Ensign Group, Inc. 0.3%
Fluor Corp. 0.3%
Blueprint Medicines Corp. 0.3%
AeroVironment, Inc. 0.3%
Brinker International, Inc. 0.3%
C000022705 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Index Trust
Class Name Series II
Trading Symbol JAJOX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Index Trust
(Series II/JAJOX)		 $36 0.73%
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.73%
Net Assets $ 505,020,518
Holdings Count | Holding 1,826
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $505,020,518
Total number of portfolio holdings 1,826
Portfolio turnover rate 8%
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.
Top Ten Holdings
Credo Technology Group Holding, Ltd. 0.5%
Fabrinet 0.4%
IonQ, Inc. 0.4%
Hims & Hers Health, Inc. 0.4%
HealthEquity, Inc. 0.3%
The Ensign Group, Inc. 0.3%
Fluor Corp. 0.3%
Blueprint Medicines Corp. 0.3%
AeroVironment, Inc. 0.3%
Brinker International, Inc. 0.3%
Sector Composition
Financials 18.6%
Industrials 16.4%
Health care 15.4%
Information technology 14.1%
Consumer discretionary 9.7%
Real estate 5.9%
Energy 4.7%
Materials 3.6%
Utilities 3.1%
Communication services 2.5%
Consumer staples 2.2%
Short-term investments and other 3.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Credo Technology Group Holding, Ltd. 0.5%
Fabrinet 0.4%
IonQ, Inc. 0.4%
Hims & Hers Health, Inc. 0.4%
HealthEquity, Inc. 0.3%
The Ensign Group, Inc. 0.3%
Fluor Corp. 0.3%
Blueprint Medicines Corp. 0.3%
AeroVironment, Inc. 0.3%
Brinker International, Inc. 0.3%
C000022703 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Index Trust
Class Name Series NAV
Trading Symbol JAEWX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Index Trust
(Series NAV/JAEWX)		 $24 0.48%
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.48%
Net Assets $ 505,020,518
Holdings Count | Holding 1,826
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $505,020,518
Total number of portfolio holdings 1,826
Portfolio turnover rate 8%
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.
Top Ten Holdings
Credo Technology Group Holding, Ltd. 0.5%
Fabrinet 0.4%
IonQ, Inc. 0.4%
Hims & Hers Health, Inc. 0.4%
HealthEquity, Inc. 0.3%
The Ensign Group, Inc. 0.3%
Fluor Corp. 0.3%
Blueprint Medicines Corp. 0.3%
AeroVironment, Inc. 0.3%
Brinker International, Inc. 0.3%
Sector Composition
Financials 18.6%
Industrials 16.4%
Health care 15.4%
Information technology 14.1%
Consumer discretionary 9.7%
Real estate 5.9%
Energy 4.7%
Materials 3.6%
Utilities 3.1%
Communication services 2.5%
Consumer staples 2.2%
Short-term investments and other 3.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Credo Technology Group Holding, Ltd. 0.5%
Fabrinet 0.4%
IonQ, Inc. 0.4%
Hims & Hers Health, Inc. 0.4%
HealthEquity, Inc. 0.3%
The Ensign Group, Inc. 0.3%
Fluor Corp. 0.3%
Blueprint Medicines Corp. 0.3%
AeroVironment, Inc. 0.3%
Brinker International, Inc. 0.3%
C000022708 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Opportunities Trust
Class Name Series I
Trading Symbol JADLX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Opportunities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Opportunities Trust
(Series I/JADLX)		 $45 0.92%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.92%
Net Assets $ 163,724,007
Holdings Count | Holding 1,151
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $163,724,007
Total number of portfolio holdings 1,151
Portfolio turnover rate 42%
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.
Top Ten Holdings
Liberty Broadband Corp., Series C 0.6%
TD SYNNEX Corp. 0.6%
Toll Brothers, Inc. 0.6%
Zions Bancorp NA 0.6%
Bunge Global SA 0.6%
Molson Coors Beverage Company, Class B 0.6%
First Horizon Corp. 0.6%
The Mosaic Company 0.6%
Ally Financial, Inc. 0.6%
Permian Resources Corp. 0.5%
Sector Composition
Financials 28.2%
Industrials 16.0%
Consumer discretionary 14.9%
Energy 9.3%
Information technology 7.3%
Health care 7.2%
Materials 6.2%
Consumer staples 5.7%
Communication services 3.9%
Real estate 0.9%
Utilities 0.3%
Short-term investments and other 0.1%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Liberty Broadband Corp., Series C 0.6%
TD SYNNEX Corp. 0.6%
Toll Brothers, Inc. 0.6%
Zions Bancorp NA 0.6%
Bunge Global SA 0.6%
Molson Coors Beverage Company, Class B 0.6%
First Horizon Corp. 0.6%
The Mosaic Company 0.6%
Ally Financial, Inc. 0.6%
Permian Resources Corp. 0.5%
C000022709 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Opportunities Trust
Class Name Series II
Trading Symbol JADPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Opportunities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Opportunities Trust
(Series II/JADPX)		 $55 1.12%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.12%
Net Assets $ 163,724,007
Holdings Count | Holding 1,151
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $163,724,007
Total number of portfolio holdings 1,151
Portfolio turnover rate 42%
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.
Top Ten Holdings
Liberty Broadband Corp., Series C 0.6%
TD SYNNEX Corp. 0.6%
Toll Brothers, Inc. 0.6%
Zions Bancorp NA 0.6%
Bunge Global SA 0.6%
Molson Coors Beverage Company, Class B 0.6%
First Horizon Corp. 0.6%
The Mosaic Company 0.6%
Ally Financial, Inc. 0.6%
Permian Resources Corp. 0.5%
Sector Composition
Financials 28.2%
Industrials 16.0%
Consumer discretionary 14.9%
Energy 9.3%
Information technology 7.3%
Health care 7.2%
Materials 6.2%
Consumer staples 5.7%
Communication services 3.9%
Real estate 0.9%
Utilities 0.3%
Short-term investments and other 0.1%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Liberty Broadband Corp., Series C 0.6%
TD SYNNEX Corp. 0.6%
Toll Brothers, Inc. 0.6%
Zions Bancorp NA 0.6%
Bunge Global SA 0.6%
Molson Coors Beverage Company, Class B 0.6%
First Horizon Corp. 0.6%
The Mosaic Company 0.6%
Ally Financial, Inc. 0.6%
Permian Resources Corp. 0.5%
C000022707 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Opportunities Trust
Class Name Series NAV
Trading Symbol JADMX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Opportunities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Opportunities Trust
(Series NAV/JADMX)		 $43 0.87%
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.87%
Net Assets $ 163,724,007
Holdings Count | Holding 1,151
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $163,724,007
Total number of portfolio holdings 1,151
Portfolio turnover rate 42%
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.
Top Ten Holdings
Liberty Broadband Corp., Series C 0.6%
TD SYNNEX Corp. 0.6%
Toll Brothers, Inc. 0.6%
Zions Bancorp NA 0.6%
Bunge Global SA 0.6%
Molson Coors Beverage Company, Class B 0.6%
First Horizon Corp. 0.6%
The Mosaic Company 0.6%
Ally Financial, Inc. 0.6%
Permian Resources Corp. 0.5%
Sector Composition
Financials 28.2%
Industrials 16.0%
Consumer discretionary 14.9%
Energy 9.3%
Information technology 7.3%
Health care 7.2%
Materials 6.2%
Consumer staples 5.7%
Communication services 3.9%
Real estate 0.9%
Utilities 0.3%
Short-term investments and other 0.1%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Liberty Broadband Corp., Series C 0.6%
TD SYNNEX Corp. 0.6%
Toll Brothers, Inc. 0.6%
Zions Bancorp NA 0.6%
Bunge Global SA 0.6%
Molson Coors Beverage Company, Class B 0.6%
First Horizon Corp. 0.6%
The Mosaic Company 0.6%
Ally Financial, Inc. 0.6%
Permian Resources Corp. 0.5%
C000022712 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Core Trust
Class Name Series I
Trading Symbol JESVX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Core Trust, formerly Small Cap Value Trust, (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Core Trust
(Series I/JESVX)		 $49 1.02%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 1.02%
Net Assets $ 288,947,229
Holdings Count | Holding 72
Investment Company Portfolio Turnover 110.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $288,947,229
Total number of portfolio holdings 72
Portfolio turnover rate 110%
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.
Top Ten Holdings
Cullen/Frost Bankers, Inc. 2.4%
Arcosa, Inc. 2.3%
Pinnacle Financial Partners, Inc. 2.3%
SouthState Corp. 2.3%
EastGroup Properties, Inc. 2.1%
First Industrial Realty Trust, Inc. 2.1%
Banner Corp. 2.0%
Crane Company 1.9%
Atmus Filtration Technologies, Inc. 1.9%
Lithia Motors, Inc. 1.8%
Sector Composition
Information technology 23.2%
Industrials 20.0%
Financials 13.4%
Health care 13.3%
Consumer discretionary 11.5%
Real estate 4.2%
Energy 3.9%
Consumer staples 2.8%
Communication services 2.4%
Materials 1.4%
Utilities 1.3%
Short-term investments and other 2.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Cullen/Frost Bankers, Inc. 2.4%
Arcosa, Inc. 2.3%
Pinnacle Financial Partners, Inc. 2.3%
SouthState Corp. 2.3%
EastGroup Properties, Inc. 2.1%
First Industrial Realty Trust, Inc. 2.1%
Banner Corp. 2.0%
Crane Company 1.9%
Atmus Filtration Technologies, Inc. 1.9%
Lithia Motors, Inc. 1.8%
C000022713 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Core Trust
Class Name Series II
Trading Symbol JAGZX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Core Trust, formerly Small Cap Value Trust, (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Core Trust
(Series II/JAGZX)		 $59 1.22%
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.22%
Net Assets $ 288,947,229
Holdings Count | Holding 72
Investment Company Portfolio Turnover 110.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $288,947,229
Total number of portfolio holdings 72
Portfolio turnover rate 110%
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.
Top Ten Holdings
Cullen/Frost Bankers, Inc. 2.4%
Arcosa, Inc. 2.3%
Pinnacle Financial Partners, Inc. 2.3%
SouthState Corp. 2.3%
EastGroup Properties, Inc. 2.1%
First Industrial Realty Trust, Inc. 2.1%
Banner Corp. 2.0%
Crane Company 1.9%
Atmus Filtration Technologies, Inc. 1.9%
Lithia Motors, Inc. 1.8%
Sector Composition
Information technology 23.2%
Industrials 20.0%
Financials 13.4%
Health care 13.3%
Consumer discretionary 11.5%
Real estate 4.2%
Energy 3.9%
Consumer staples 2.8%
Communication services 2.4%
Materials 1.4%
Utilities 1.3%
Short-term investments and other 2.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Cullen/Frost Bankers, Inc. 2.4%
Arcosa, Inc. 2.3%
Pinnacle Financial Partners, Inc. 2.3%
SouthState Corp. 2.3%
EastGroup Properties, Inc. 2.1%
First Industrial Realty Trust, Inc. 2.1%
Banner Corp. 2.0%
Crane Company 1.9%
Atmus Filtration Technologies, Inc. 1.9%
Lithia Motors, Inc. 1.8%
C000022711 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Core Trust
Class Name Series NAV
Trading Symbol JAHBX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Core Trust, formerly Small Cap Value Trust, (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Core Trust
(Series NAV/JAHBX)		 $47 0.97%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.97%
Net Assets $ 288,947,229
Holdings Count | Holding 72
Investment Company Portfolio Turnover 110.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $288,947,229
Total number of portfolio holdings 72
Portfolio turnover rate 110%
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.
Top Ten Holdings
Cullen/Frost Bankers, Inc. 2.4%
Arcosa, Inc. 2.3%
Pinnacle Financial Partners, Inc. 2.3%
SouthState Corp. 2.3%
EastGroup Properties, Inc. 2.1%
First Industrial Realty Trust, Inc. 2.1%
Banner Corp. 2.0%
Crane Company 1.9%
Atmus Filtration Technologies, Inc. 1.9%
Lithia Motors, Inc. 1.8%
Sector Composition
Information technology 23.2%
Industrials 20.0%
Financials 13.4%
Health care 13.3%
Consumer discretionary 11.5%
Real estate 4.2%
Energy 3.9%
Consumer staples 2.8%
Communication services 2.4%
Materials 1.4%
Utilities 1.3%
Short-term investments and other 2.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Cullen/Frost Bankers, Inc. 2.4%
Arcosa, Inc. 2.3%
Pinnacle Financial Partners, Inc. 2.3%
SouthState Corp. 2.3%
EastGroup Properties, Inc. 2.1%
First Industrial Realty Trust, Inc. 2.1%
Banner Corp. 2.0%
Crane Company 1.9%
Atmus Filtration Technologies, Inc. 1.9%
Lithia Motors, Inc. 1.8%
C000022724 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Company Value Trust
Class Name Series I
Trading Symbol JAEPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Company Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Company Value Trust
(Series I/JAEPX)		 $55 1.13%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.13%
Net Assets $ 120,846,854
Holdings Count | Holding 198
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $120,846,854
Total number of portfolio holdings 198
Portfolio turnover rate 21%
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.
Top Ten Holdings
Pinnacle Financial Partners, Inc. 1.9%
PennyMac Financial Services, Inc. 1.5%
Columbia Banking System, Inc. 1.5%
Houlihan Lokey, Inc. 1.4%
SouthState Corp. 1.2%
Western Alliance Bancorp 1.2%
Mirion Technologies, Inc. 1.1%
FB Financial Corp. 1.0%
Carvana Company 1.0%
Matador Resources Company 1.0%
Sector Composition
Financials 28.4%
Industrials 13.2%
Real estate 10.8%
Consumer discretionary 9.6%
Health care 8.4%
Information technology 7.2%
Energy 6.8%
Utilities 5.8%
Materials 4.5%
Communication services 2.0%
Consumer staples 1.8%
Short-term investments and other 1.5%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Pinnacle Financial Partners, Inc. 1.9%
PennyMac Financial Services, Inc. 1.5%
Columbia Banking System, Inc. 1.5%
Houlihan Lokey, Inc. 1.4%
SouthState Corp. 1.2%
Western Alliance Bancorp 1.2%
Mirion Technologies, Inc. 1.1%
FB Financial Corp. 1.0%
Carvana Company 1.0%
Matador Resources Company 1.0%
C000022725 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Company Value Trust
Class Name Series II
Trading Symbol JAERX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Company Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Company Value Trust
(Series II/JAERX)		 $65 1.33%
Expenses Paid, Amount $ 65
Expense Ratio, Percent 1.33%
Net Assets $ 120,846,854
Holdings Count | Holding 198
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $120,846,854
Total number of portfolio holdings 198
Portfolio turnover rate 21%
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.
Top Ten Holdings
Pinnacle Financial Partners, Inc. 1.9%
PennyMac Financial Services, Inc. 1.5%
Columbia Banking System, Inc. 1.5%
Houlihan Lokey, Inc. 1.4%
SouthState Corp. 1.2%
Western Alliance Bancorp 1.2%
Mirion Technologies, Inc. 1.1%
FB Financial Corp. 1.0%
Carvana Company 1.0%
Matador Resources Company 1.0%
Sector Composition
Financials 28.4%
Industrials 13.2%
Real estate 10.8%
Consumer discretionary 9.6%
Health care 8.4%
Information technology 7.2%
Energy 6.8%
Utilities 5.8%
Materials 4.5%
Communication services 2.0%
Consumer staples 1.8%
Short-term investments and other 1.5%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Pinnacle Financial Partners, Inc. 1.9%
PennyMac Financial Services, Inc. 1.5%
Columbia Banking System, Inc. 1.5%
Houlihan Lokey, Inc. 1.4%
SouthState Corp. 1.2%
Western Alliance Bancorp 1.2%
Mirion Technologies, Inc. 1.1%
FB Financial Corp. 1.0%
Carvana Company 1.0%
Matador Resources Company 1.0%
C000022723 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Company Value Trust
Class Name Series NAV
Trading Symbol JAEQX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Company Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Company Value Trust
(Series NAV/JAEQX)		 $53 1.08%
Expenses Paid, Amount $ 53
Expense Ratio, Percent 1.08%
Net Assets $ 120,846,854
Holdings Count | Holding 198
Investment Company Portfolio Turnover 21.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $120,846,854
Total number of portfolio holdings 198
Portfolio turnover rate 21%
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.
Top Ten Holdings
Pinnacle Financial Partners, Inc. 1.9%
PennyMac Financial Services, Inc. 1.5%
Columbia Banking System, Inc. 1.5%
Houlihan Lokey, Inc. 1.4%
SouthState Corp. 1.2%
Western Alliance Bancorp 1.2%
Mirion Technologies, Inc. 1.1%
FB Financial Corp. 1.0%
Carvana Company 1.0%
Matador Resources Company 1.0%
Sector Composition
Financials 28.4%
Industrials 13.2%
Real estate 10.8%
Consumer discretionary 9.6%
Health care 8.4%
Information technology 7.2%
Energy 6.8%
Utilities 5.8%
Materials 4.5%
Communication services 2.0%
Consumer staples 1.8%
Short-term investments and other 1.5%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Pinnacle Financial Partners, Inc. 1.9%
PennyMac Financial Services, Inc. 1.5%
Columbia Banking System, Inc. 1.5%
Houlihan Lokey, Inc. 1.4%
SouthState Corp. 1.2%
Western Alliance Bancorp 1.2%
Mirion Technologies, Inc. 1.1%
FB Financial Corp. 1.0%
Carvana Company 1.0%
Matador Resources Company 1.0%
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 semiannual shareholder report contains important information about the Strategic Income Opportunities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Strategic Income Opportunities Trust
(Series I/JESNX)		 $39 0.78%
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.78%
Net Assets $ 388,052,741
Holdings Count | Holding 486
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $388,052,741
Total number of portfolio holdings 486
Portfolio turnover rate 35%
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
Corporate bonds 46.3%
Foreign government obligations 20.3%
Term loans 9.5%
U.S. Government Agency 6.3%
U.S. Government 3.6%
Collateralized mortgage obligations – U.S. Government Agency 3.3%
Collateralized mortgage obligations – Commercial and residential 2.9%
Preferred securities 2.5%
Convertible bonds 1.6%
Asset-backed securities 1.5%
Short-term investments and other 2.2%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Strategic Income Opportunities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Strategic Income Opportunities Trust
(Series II/JESPX)		 $50 0.98%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.98%
Net Assets $ 388,052,741
Holdings Count | Holding 486
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $388,052,741
Total number of portfolio holdings 486
Portfolio turnover rate 35%
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
Corporate bonds 46.3%
Foreign government obligations 20.3%
Term loans 9.5%
U.S. Government Agency 6.3%
U.S. Government 3.6%
Collateralized mortgage obligations – U.S. Government Agency 3.3%
Collateralized mortgage obligations – Commercial and residential 2.9%
Preferred securities 2.5%
Convertible bonds 1.6%
Asset-backed securities 1.5%
Short-term investments and other 2.2%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Strategic Income Opportunities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Strategic Income Opportunities Trust
(Series NAV/JVRNX)		 $37 0.73%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.73%
Net Assets $ 388,052,741
Holdings Count | Holding 486
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $388,052,741
Total number of portfolio holdings 486
Portfolio turnover rate 35%
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
Corporate bonds 46.3%
Foreign government obligations 20.3%
Term loans 9.5%
U.S. Government Agency 6.3%
U.S. Government 3.6%
Collateralized mortgage obligations – U.S. Government Agency 3.3%
Collateralized mortgage obligations – Commercial and residential 2.9%
Preferred securities 2.5%
Convertible bonds 1.6%
Asset-backed securities 1.5%
Short-term investments and other 2.2%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
C000022744 [Member]  
Shareholder Report [Line Items]  
Fund Name Fundamental Large Cap Value Trust
Class Name Series I
Trading Symbol JVFLX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Fundamental Large Cap Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Fundamental Large Cap Value Trust
(Series I/JVFLX)		 $39 0.77%
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.77%
Net Assets $ 816,027,365
Holdings Count | Holding 60
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $816,027,365
Total number of portfolio holdings 60
Portfolio turnover rate 6%
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.
Top Ten Holdings
Cheniere Energy, Inc. 5.1%
Oracle Corp. 4.4%
Nasdaq, Inc. 4.1%
Elevance Health, Inc. 4.1%
Crown Castle, Inc. 3.5%
Microsoft Corp. 3.3%
Walmart, Inc. 3.3%
Hologic, Inc. 3.1%
Comcast Corp., Class A 3.0%
United Rentals, Inc. 2.8%
Sector Composition
Health care 19.6%
Financials 18.4%
Information technology 14.6%
Industrials 12.0%
Consumer staples 8.8%
Energy 7.7%
Communication services 7.3%
Consumer discretionary 6.8%
Real estate 3.5%
Materials 0.8%
Short-term investments and other 0.5%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Cheniere Energy, Inc. 5.1%
Oracle Corp. 4.4%
Nasdaq, Inc. 4.1%
Elevance Health, Inc. 4.1%
Crown Castle, Inc. 3.5%
Microsoft Corp. 3.3%
Walmart, Inc. 3.3%
Hologic, Inc. 3.1%
Comcast Corp., Class A 3.0%
United Rentals, Inc. 2.8%
C000022745 [Member]  
Shareholder Report [Line Items]  
Fund Name Fundamental Large Cap Value Trust
Class Name Series II
Trading Symbol JADJX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Fundamental Large Cap Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Fundamental Large Cap Value Trust
(Series II/JADJX)		 $50 0.97%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.97%
Net Assets $ 816,027,365
Holdings Count | Holding 60
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $816,027,365
Total number of portfolio holdings 60
Portfolio turnover rate 6%
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.
Top Ten Holdings
Cheniere Energy, Inc. 5.1%
Oracle Corp. 4.4%
Nasdaq, Inc. 4.1%
Elevance Health, Inc. 4.1%
Crown Castle, Inc. 3.5%
Microsoft Corp. 3.3%
Walmart, Inc. 3.3%
Hologic, Inc. 3.1%
Comcast Corp., Class A 3.0%
United Rentals, Inc. 2.8%
Sector Composition
Health care 19.6%
Financials 18.4%
Information technology 14.6%
Industrials 12.0%
Consumer staples 8.8%
Energy 7.7%
Communication services 7.3%
Consumer discretionary 6.8%
Real estate 3.5%
Materials 0.8%
Short-term investments and other 0.5%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Cheniere Energy, Inc. 5.1%
Oracle Corp. 4.4%
Nasdaq, Inc. 4.1%
Elevance Health, Inc. 4.1%
Crown Castle, Inc. 3.5%
Microsoft Corp. 3.3%
Walmart, Inc. 3.3%
Hologic, Inc. 3.1%
Comcast Corp., Class A 3.0%
United Rentals, Inc. 2.8%
C000022743 [Member]  
Shareholder Report [Line Items]  
Fund Name Fundamental Large Cap Value Trust
Class Name Series NAV
Trading Symbol JADIX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Fundamental Large Cap Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Fundamental Large Cap Value Trust
(Series NAV/JADIX)		 $37 0.72%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.72%
Net Assets $ 816,027,365
Holdings Count | Holding 60
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $816,027,365
Total number of portfolio holdings 60
Portfolio turnover rate 6%
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.
Top Ten Holdings
Cheniere Energy, Inc. 5.1%
Oracle Corp. 4.4%
Nasdaq, Inc. 4.1%
Elevance Health, Inc. 4.1%
Crown Castle, Inc. 3.5%
Microsoft Corp. 3.3%
Walmart, Inc. 3.3%
Hologic, Inc. 3.1%
Comcast Corp., Class A 3.0%
United Rentals, Inc. 2.8%
Sector Composition
Health care 19.6%
Financials 18.4%
Information technology 14.6%
Industrials 12.0%
Consumer staples 8.8%
Energy 7.7%
Communication services 7.3%
Consumer discretionary 6.8%
Real estate 3.5%
Materials 0.8%
Short-term investments and other 0.5%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Cheniere Energy, Inc. 5.1%
Oracle Corp. 4.4%
Nasdaq, Inc. 4.1%
Elevance Health, Inc. 4.1%
Crown Castle, Inc. 3.5%
Microsoft Corp. 3.3%
Walmart, Inc. 3.3%
Hologic, Inc. 3.1%
Comcast Corp., Class A 3.0%
United Rentals, Inc. 2.8%
C000022760 [Member]  
Shareholder Report [Line Items]  
Fund Name Total Stock Market Index Trust
Class Name Series I
Trading Symbol JETSX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Total Stock Market Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Total Stock Market Index Trust
(Series I/JETSX)		 $25 0.49%
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.49%
Net Assets $ 1,072,039,530
Holdings Count | Holding 2,565
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,072,039,530
Total number of portfolio holdings 2,565
Portfolio turnover rate 4%
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.
Top Ten Holdings
NVIDIA Corp. 5.9%
Microsoft Corp. 5.7%
Apple, Inc. 4.8%
Amazon.com, Inc. 3.6%
Meta Platforms, Inc., Class A 2.5%
Broadcom, Inc. 2.0%
Alphabet, Inc., Class A 1.6%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
JPMorgan Chase & Co. 1.3%
Sector Composition
Information technology 29.5%
Financials 14.1%
Consumer discretionary 10.4%
Industrials 9.4%
Health care 9.3%
Communication services 9.1%
Consumer staples 5.6%
Energy 2.9%
Real estate 2.3%
Materials 2.2%
Utilities 2.2%
Short-term investments and other 3.0%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 5.9%
Microsoft Corp. 5.7%
Apple, Inc. 4.8%
Amazon.com, Inc. 3.6%
Meta Platforms, Inc., Class A 2.5%
Broadcom, Inc. 2.0%
Alphabet, Inc., Class A 1.6%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
JPMorgan Chase & Co. 1.3%
C000022761 [Member]  
Shareholder Report [Line Items]  
Fund Name Total Stock Market Index Trust
Class Name Series I
Trading Symbol JAFFX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Total Stock Market Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Total Stock Market Index Trust
(Series II/JAFFX)		 $35 0.69%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.69%
Net Assets $ 1,072,039,530
Holdings Count | Holding 2,565
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,072,039,530
Total number of portfolio holdings 2,565
Portfolio turnover rate 4%
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.
Top Ten Holdings
NVIDIA Corp. 5.9%
Microsoft Corp. 5.7%
Apple, Inc. 4.8%
Amazon.com, Inc. 3.6%
Meta Platforms, Inc., Class A 2.5%
Broadcom, Inc. 2.0%
Alphabet, Inc., Class A 1.6%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
JPMorgan Chase & Co. 1.3%
Sector Composition
Information technology 29.5%
Financials 14.1%
Consumer discretionary 10.4%
Industrials 9.4%
Health care 9.3%
Communication services 9.1%
Consumer staples 5.6%
Energy 2.9%
Real estate 2.3%
Materials 2.2%
Utilities 2.2%
Short-term investments and other 3.0%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 5.9%
Microsoft Corp. 5.7%
Apple, Inc. 4.8%
Amazon.com, Inc. 3.6%
Meta Platforms, Inc., Class A 2.5%
Broadcom, Inc. 2.0%
Alphabet, Inc., Class A 1.6%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
JPMorgan Chase & Co. 1.3%
C000022759 [Member]  
Shareholder Report [Line Items]  
Fund Name Total Stock Market Index Trust
Class Name Series NAV
Trading Symbol JAFEX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Total Stock Market Index Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Total Stock Market Index Trust
(Series NAV/JAFEX)		 $22 0.44%
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.44%
Net Assets $ 1,072,039,530
Holdings Count | Holding 2,565
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,072,039,530
Total number of portfolio holdings 2,565
Portfolio turnover rate 4%
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.
Top Ten Holdings
NVIDIA Corp. 5.9%
Microsoft Corp. 5.7%
Apple, Inc. 4.8%
Amazon.com, Inc. 3.6%
Meta Platforms, Inc., Class A 2.5%
Broadcom, Inc. 2.0%
Alphabet, Inc., Class A 1.6%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
JPMorgan Chase & Co. 1.3%
Sector Composition
Information technology 29.5%
Financials 14.1%
Consumer discretionary 10.4%
Industrials 9.4%
Health care 9.3%
Communication services 9.1%
Consumer staples 5.6%
Energy 2.9%
Real estate 2.3%
Materials 2.2%
Utilities 2.2%
Short-term investments and other 3.0%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 5.9%
Microsoft Corp. 5.7%
Apple, Inc. 4.8%
Amazon.com, Inc. 3.6%
Meta Platforms, Inc., Class A 2.5%
Broadcom, Inc. 2.0%
Alphabet, Inc., Class A 1.6%
Tesla, Inc. 1.6%
Alphabet, Inc., Class C 1.5%
JPMorgan Chase & Co. 1.3%
C000022812 [Member]  
Shareholder Report [Line Items]  
Fund Name Real Estate Securities Trust
Class Name Series I
Trading Symbol JADBX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Real Estate Securities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Real Estate Securities Trust
(Series I/JADBX)		 $40 0.81%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.81%
Net Assets $ 279,265,952
Holdings Count | Holding 35
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $279,265,952
Total number of portfolio holdings 35
Portfolio turnover rate 49%
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.
Top Ten Holdings
Welltower, Inc. 9.9%
Prologis, Inc. 7.8%
Equinix, Inc. 6.2%
Essex Property Trust, Inc. 5.6%
Public Storage 4.7%
EastGroup Properties, Inc. 3.6%
SL Green Realty Corp. 3.3%
AvalonBay Communities, Inc. 3.3%
American Tower Corp. 3.3%
EPR Properties 3.1%
Industry Composition
Specialized REITs 25.1%
Health care REITs 16.9%
Residential REITs 16.4%
Retail REITs 12.8%
Industrial REITs 11.4%
Office REITs 5.9%
Hotels, restaurants and leisure 3.4%
Diversified REITs 3.0%
Health care providers and services 1.8%
Real estate management and development 1.2%
Hotel and resort REITs 0.5%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Welltower, Inc. 9.9%
Prologis, Inc. 7.8%
Equinix, Inc. 6.2%
Essex Property Trust, Inc. 5.6%
Public Storage 4.7%
EastGroup Properties, Inc. 3.6%
SL Green Realty Corp. 3.3%
AvalonBay Communities, Inc. 3.3%
American Tower Corp. 3.3%
EPR Properties 3.1%
C000022813 [Member]  
Shareholder Report [Line Items]  
Fund Name Real Estate Securities Trust
Class Name Series II
Trading Symbol JAJLX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Real Estate Securities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Real Estate Securities Trust
(Series II/JAJLX)		 $50 1.01%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 1.01%
Net Assets $ 279,265,952
Holdings Count | Holding 35
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $279,265,952
Total number of portfolio holdings 35
Portfolio turnover rate 49%
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.
Top Ten Holdings
Welltower, Inc. 9.9%
Prologis, Inc. 7.8%
Equinix, Inc. 6.2%
Essex Property Trust, Inc. 5.6%
Public Storage 4.7%
EastGroup Properties, Inc. 3.6%
SL Green Realty Corp. 3.3%
AvalonBay Communities, Inc. 3.3%
American Tower Corp. 3.3%
EPR Properties 3.1%
Industry Composition
Specialized REITs 25.1%
Health care REITs 16.9%
Residential REITs 16.4%
Retail REITs 12.8%
Industrial REITs 11.4%
Office REITs 5.9%
Hotels, restaurants and leisure 3.4%
Diversified REITs 3.0%
Health care providers and services 1.8%
Real estate management and development 1.2%
Hotel and resort REITs 0.5%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Welltower, Inc. 9.9%
Prologis, Inc. 7.8%
Equinix, Inc. 6.2%
Essex Property Trust, Inc. 5.6%
Public Storage 4.7%
EastGroup Properties, Inc. 3.6%
SL Green Realty Corp. 3.3%
AvalonBay Communities, Inc. 3.3%
American Tower Corp. 3.3%
EPR Properties 3.1%
C000022811 [Member]  
Shareholder Report [Line Items]  
Fund Name Real Estate Securities Trust
Class Name Series NAV
Trading Symbol JAJMX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Real Estate Securities Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Real Estate Securities Trust
(Series NAV/JAJMX)		 $37 0.76%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.76%
Net Assets $ 279,265,952
Holdings Count | Holding 35
Investment Company Portfolio Turnover 49.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $279,265,952
Total number of portfolio holdings 35
Portfolio turnover rate 49%
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.
Top Ten Holdings
Welltower, Inc. 9.9%
Prologis, Inc. 7.8%
Equinix, Inc. 6.2%
Essex Property Trust, Inc. 5.6%
Public Storage 4.7%
EastGroup Properties, Inc. 3.6%
SL Green Realty Corp. 3.3%
AvalonBay Communities, Inc. 3.3%
American Tower Corp. 3.3%
EPR Properties 3.1%
Industry Composition
Specialized REITs 25.1%
Health care REITs 16.9%
Residential REITs 16.4%
Retail REITs 12.8%
Industrial REITs 11.4%
Office REITs 5.9%
Hotels, restaurants and leisure 3.4%
Diversified REITs 3.0%
Health care providers and services 1.8%
Real estate management and development 1.2%
Hotel and resort REITs 0.5%
Short-term investments and other 1.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Welltower, Inc. 9.9%
Prologis, Inc. 7.8%
Equinix, Inc. 6.2%
Essex Property Trust, Inc. 5.6%
Public Storage 4.7%
EastGroup Properties, Inc. 3.6%
SL Green Realty Corp. 3.3%
AvalonBay Communities, Inc. 3.3%
American Tower Corp. 3.3%
EPR Properties 3.1%
C000022820 [Member]  
Shareholder Report [Line Items]  
Fund Name Science & Technology Trust
Class Name Series I
Trading Symbol JESTX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Science & Technology Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Science & Technology Trust
(Series I/JESTX)		 $50 0.99%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.99%
Net Assets $ 1,089,782,016
Holdings Count | Holding 86
Investment Company Portfolio Turnover 116.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,089,782,016
Total number of portfolio holdings 86
Portfolio turnover rate 116%
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.
Top Ten Holdings
NVIDIA Corp. 10.0%
Meta Platforms, Inc., Class A 10.0%
Microsoft Corp. 8.8%
Broadcom, Inc. 7.7%
Apple, Inc. 4.3%
Advanced Micro Devices, Inc. 3.6%
Alphabet, Inc., Class C 3.4%
MicroStrategy, Inc., Class A 3.2%
Oracle Corp. 2.6%
Applied Materials, Inc. 2.4%
Sector Composition
Information technology 78.5%
Communication services 18.0%
Financials 1.7%
Consumer discretionary 1.4%
Industrials 0.1%
Short-term investments and other 0.3%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 10.0%
Meta Platforms, Inc., Class A 10.0%
Microsoft Corp. 8.8%
Broadcom, Inc. 7.7%
Apple, Inc. 4.3%
Advanced Micro Devices, Inc. 3.6%
Alphabet, Inc., Class C 3.4%
MicroStrategy, Inc., Class A 3.2%
Oracle Corp. 2.6%
Applied Materials, Inc. 2.4%
C000022821 [Member]  
Shareholder Report [Line Items]  
Fund Name Science & Technology Trust
Class Name Series II
Trading Symbol JAFUX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Science & Technology Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Science & Technology Trust
(Series II/JAFUX)		 $60 1.19%
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.19%
Net Assets $ 1,089,782,016
Holdings Count | Holding 86
Investment Company Portfolio Turnover 116.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,089,782,016
Total number of portfolio holdings 86
Portfolio turnover rate 116%
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.
Top Ten Holdings
NVIDIA Corp. 10.0%
Meta Platforms, Inc., Class A 10.0%
Microsoft Corp. 8.8%
Broadcom, Inc. 7.7%
Apple, Inc. 4.3%
Advanced Micro Devices, Inc. 3.6%
Alphabet, Inc., Class C 3.4%
MicroStrategy, Inc., Class A 3.2%
Oracle Corp. 2.6%
Applied Materials, Inc. 2.4%
Sector Composition
Information technology 78.5%
Communication services 18.0%
Financials 1.7%
Consumer discretionary 1.4%
Industrials 0.1%
Short-term investments and other 0.3%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 10.0%
Meta Platforms, Inc., Class A 10.0%
Microsoft Corp. 8.8%
Broadcom, Inc. 7.7%
Apple, Inc. 4.3%
Advanced Micro Devices, Inc. 3.6%
Alphabet, Inc., Class C 3.4%
MicroStrategy, Inc., Class A 3.2%
Oracle Corp. 2.6%
Applied Materials, Inc. 2.4%
C000022819 [Member]  
Shareholder Report [Line Items]  
Fund Name Science & Technology Trust
Class Name Series NAV
Trading Symbol JAFSX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Science & Technology Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Science & Technology Trust
(Series NAV/JAFSX)		 $48 0.94%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.94%
Net Assets $ 1,089,782,016
Holdings Count | Holding 86
Investment Company Portfolio Turnover 116.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,089,782,016
Total number of portfolio holdings 86
Portfolio turnover rate 116%
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.
Top Ten Holdings
NVIDIA Corp. 10.0%
Meta Platforms, Inc., Class A 10.0%
Microsoft Corp. 8.8%
Broadcom, Inc. 7.7%
Apple, Inc. 4.3%
Advanced Micro Devices, Inc. 3.6%
Alphabet, Inc., Class C 3.4%
MicroStrategy, Inc., Class A 3.2%
Oracle Corp. 2.6%
Applied Materials, Inc. 2.4%
Sector Composition
Information technology 78.5%
Communication services 18.0%
Financials 1.7%
Consumer discretionary 1.4%
Industrials 0.1%
Short-term investments and other 0.3%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 10.0%
Meta Platforms, Inc., Class A 10.0%
Microsoft Corp. 8.8%
Broadcom, Inc. 7.7%
Apple, Inc. 4.3%
Advanced Micro Devices, Inc. 3.6%
Alphabet, Inc., Class C 3.4%
MicroStrategy, Inc., Class A 3.2%
Oracle Corp. 2.6%
Applied Materials, Inc. 2.4%
C000022832 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Stock Trust
Class Name Series I
Trading Symbol JESGX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Stock Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Stock Trust
(Series I/JESGX)		 $55 1.12%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.12%
Net Assets $ 274,159,775
Holdings Count | Holding 102
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $274,159,775
Total number of portfolio holdings 102
Portfolio turnover rate 35%
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.
Top Ten Holdings
The AZEK Company, Inc. 2.8%
Verra Mobility Corp. 2.7%
CyberArk Software, Ltd. 2.6%
ExlService Holdings, Inc. 2.5%
AvePoint, Inc. 2.3%
SiTime Corp. 2.2%
PJT Partners, Inc., Class A 2.0%
Casella Waste Systems, Inc., Class A 2.0%
Cabot Corp. 1.9%
Zurn Elkay Water Solutions Corp. 1.9%
Sector Composition
Industrials 26.2%
Health care 24.6%
Information technology 16.8%
Consumer discretionary 12.0%
Financials 8.5%
Real estate 3.3%
Communication services 2.3%
Materials 1.9%
Energy 1.8%
Consumer staples 1.7%
Short-term investments and other 0.9%
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.
Largest Holdings [Text Block]
Top Ten Holdings
The AZEK Company, Inc. 2.8%
Verra Mobility Corp. 2.7%
CyberArk Software, Ltd. 2.6%
ExlService Holdings, Inc. 2.5%
AvePoint, Inc. 2.3%
SiTime Corp. 2.2%
PJT Partners, Inc., Class A 2.0%
Casella Waste Systems, Inc., Class A 2.0%
Cabot Corp. 1.9%
Zurn Elkay Water Solutions Corp. 1.9%
C000022833 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Stock Trust
Class Name Series II
Trading Symbol JAGQX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Stock Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Stock Trust
(Series II/JAGQX)		 $65 1.32%
Expenses Paid, Amount $ 65
Expense Ratio, Percent 1.32%
Net Assets $ 274,159,775
Holdings Count | Holding 102
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $274,159,775
Total number of portfolio holdings 102
Portfolio turnover rate 35%
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.
Top Ten Holdings
The AZEK Company, Inc. 2.8%
Verra Mobility Corp. 2.7%
CyberArk Software, Ltd. 2.6%
ExlService Holdings, Inc. 2.5%
AvePoint, Inc. 2.3%
SiTime Corp. 2.2%
PJT Partners, Inc., Class A 2.0%
Casella Waste Systems, Inc., Class A 2.0%
Cabot Corp. 1.9%
Zurn Elkay Water Solutions Corp. 1.9%
Sector Composition
Industrials 26.2%
Health care 24.6%
Information technology 16.8%
Consumer discretionary 12.0%
Financials 8.5%
Real estate 3.3%
Communication services 2.3%
Materials 1.9%
Energy 1.8%
Consumer staples 1.7%
Short-term investments and other 0.9%
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.
Largest Holdings [Text Block]
Top Ten Holdings
The AZEK Company, Inc. 2.8%
Verra Mobility Corp. 2.7%
CyberArk Software, Ltd. 2.6%
ExlService Holdings, Inc. 2.5%
AvePoint, Inc. 2.3%
SiTime Corp. 2.2%
PJT Partners, Inc., Class A 2.0%
Casella Waste Systems, Inc., Class A 2.0%
Cabot Corp. 1.9%
Zurn Elkay Water Solutions Corp. 1.9%
C000022831 [Member]  
Shareholder Report [Line Items]  
Fund Name Small Cap Stock Trust
Class Name Series NAV
Trading Symbol JAGPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Small Cap Stock Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Small Cap Stock Trust
(Series NAV/JAGPX)		 $53 1.07%
Expenses Paid, Amount $ 53
Expense Ratio, Percent 1.07%
Net Assets $ 274,159,775
Holdings Count | Holding 102
Investment Company Portfolio Turnover 35.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $274,159,775
Total number of portfolio holdings 102
Portfolio turnover rate 35%
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.
Top Ten Holdings
The AZEK Company, Inc. 2.8%
Verra Mobility Corp. 2.7%
CyberArk Software, Ltd. 2.6%
ExlService Holdings, Inc. 2.5%
AvePoint, Inc. 2.3%
SiTime Corp. 2.2%
PJT Partners, Inc., Class A 2.0%
Casella Waste Systems, Inc., Class A 2.0%
Cabot Corp. 1.9%
Zurn Elkay Water Solutions Corp. 1.9%
Sector Composition
Industrials 26.2%
Health care 24.6%
Information technology 16.8%
Consumer discretionary 12.0%
Financials 8.5%
Real estate 3.3%
Communication services 2.3%
Materials 1.9%
Energy 1.8%
Consumer staples 1.7%
Short-term investments and other 0.9%
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.
Largest Holdings [Text Block]
Top Ten Holdings
The AZEK Company, Inc. 2.8%
Verra Mobility Corp. 2.7%
CyberArk Software, Ltd. 2.6%
ExlService Holdings, Inc. 2.5%
AvePoint, Inc. 2.3%
SiTime Corp. 2.2%
PJT Partners, Inc., Class A 2.0%
Casella Waste Systems, Inc., Class A 2.0%
Cabot Corp. 1.9%
Zurn Elkay Water Solutions Corp. 1.9%
C000047744 [Member]  
Shareholder Report [Line Items]  
Fund Name American Asset Allocation Trust
Class Name Series I
Trading Symbol JAHZX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Asset Allocation Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Asset Allocation Trust
(Series I/JAHZX)		 $32 0.62%
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.62%
Net Assets $ 1,209,332,404
Holdings Count | Holding 1
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,209,332,404
Total number of portfolio holdings 1
Portfolio turnover rate 6%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Asset Allocation Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Portfolio Composition
Common stocks 67.6%
Collateralized mortgage obligations 10.4%
Corporate bonds 9.6%
U.S. Government and agency obligations 7.1%
Asset-backed securities 2.1%
Foreign government obligations 0.1%
Short-term investments and other 3.1%
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.
C000047745 [Member]  
Shareholder Report [Line Items]  
Fund Name American Asset Allocation Trust
Class Name Series II
Trading Symbol JAIFX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Asset Allocation Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Asset Allocation Trust
(Series II/JAIFX)		 $37 0.71%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.71%
Net Assets $ 1,209,332,404
Holdings Count | Holding 1
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,209,332,404
Total number of portfolio holdings 1
Portfolio turnover rate 6%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Asset Allocation Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Portfolio Composition
Common stocks 67.6%
Collateralized mortgage obligations 10.4%
Corporate bonds 9.6%
U.S. Government and agency obligations 7.1%
Asset-backed securities 2.1%
Foreign government obligations 0.1%
Short-term investments and other 3.1%
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.
C000047746 [Member]  
Shareholder Report [Line Items]  
Fund Name American Asset Allocation Trust
Class Name Series III
Trading Symbol JAIDX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Asset Allocation Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Asset Allocation Trust
(Series III/JAIDX)		 $14 0.27%
Expenses Paid, Amount $ 14
Expense Ratio, Percent 0.27%
Net Assets $ 1,209,332,404
Holdings Count | Holding 1
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,209,332,404
Total number of portfolio holdings 1
Portfolio turnover rate 6%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Asset Allocation Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Portfolio Composition
Common stocks 67.6%
Collateralized mortgage obligations 10.4%
Corporate bonds 9.6%
U.S. Government and agency obligations 7.1%
Asset-backed securities 2.1%
Foreign government obligations 0.1%
Short-term investments and other 3.1%
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.
C000047759 [Member]  
Shareholder Report [Line Items]  
Fund Name Disciplined Value Emerging Markets Equity Trust
Class Name Series I
Trading Symbol JAJBX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Disciplined Value Emerging Markets Equity Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Disciplined Value Emerging Markets Equity Trust
(Series I/JAJBX)		 $51 0.97%
Expenses Paid, Amount $ 51
Expense Ratio, Percent 0.97%
Net Assets $ 240,181,254
Holdings Count | Holding 170
Investment Company Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $240,181,254
Total number of portfolio holdings 170
Portfolio turnover rate 97%
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.
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 5.1%
Tencent Holdings, Ltd. 4.9%
Samsung Electronics Company, Ltd. 2.9%
Hyundai Mobis Company, Ltd. 2.8%
WuXi AppTec Company, Ltd., H Shares 2.5%
Samsung Electronics Company, Ltd. 2.3%
Sendas Distribuidora SA 2.0%
Millicom International Cellular SA 2.0%
Hana Financial Group, Inc. 1.9%
Muyuan Foods Company, Ltd., Class A 1.9%
Sector Composition
Information technology 17.3%
Communication services 13.5%
Consumer staples 11.9%
Financials 11.8%
Consumer discretionary 10.9%
Health care 7.7%
Materials 7.7%
Industrials 7.5%
Energy 1.6%
Real estate 1.6%
Utilities 0.4%
Short-term investments and other 8.1%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 5.1%
Tencent Holdings, Ltd. 4.9%
Samsung Electronics Company, Ltd. 2.9%
Hyundai Mobis Company, Ltd. 2.8%
WuXi AppTec Company, Ltd., H Shares 2.5%
Samsung Electronics Company, Ltd. 2.3%
Sendas Distribuidora SA 2.0%
Millicom International Cellular SA 2.0%
Hana Financial Group, Inc. 1.9%
Muyuan Foods Company, Ltd., Class A 1.9%
C000047760 [Member]  
Shareholder Report [Line Items]  
Fund Name Disciplined Value Emerging Markets Equity Trust
Class Name Series II
Trading Symbol JEMTX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Disciplined Value Emerging Markets Equity Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Disciplined Value Emerging Markets Equity Trust
(Series II/JEMTX)		 $62 1.17%
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.17%
Net Assets $ 240,181,254
Holdings Count | Holding 170
Investment Company Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $240,181,254
Total number of portfolio holdings 170
Portfolio turnover rate 97%
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.
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 5.1%
Tencent Holdings, Ltd. 4.9%
Samsung Electronics Company, Ltd. 2.9%
Hyundai Mobis Company, Ltd. 2.8%
WuXi AppTec Company, Ltd., H Shares 2.5%
Samsung Electronics Company, Ltd. 2.3%
Sendas Distribuidora SA 2.0%
Millicom International Cellular SA 2.0%
Hana Financial Group, Inc. 1.9%
Muyuan Foods Company, Ltd., Class A 1.9%
Sector Composition
Information technology 17.3%
Communication services 13.5%
Consumer staples 11.9%
Financials 11.8%
Consumer discretionary 10.9%
Health care 7.7%
Materials 7.7%
Industrials 7.5%
Energy 1.6%
Real estate 1.6%
Utilities 0.4%
Short-term investments and other 8.1%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 5.1%
Tencent Holdings, Ltd. 4.9%
Samsung Electronics Company, Ltd. 2.9%
Hyundai Mobis Company, Ltd. 2.8%
WuXi AppTec Company, Ltd., H Shares 2.5%
Samsung Electronics Company, Ltd. 2.3%
Sendas Distribuidora SA 2.0%
Millicom International Cellular SA 2.0%
Hana Financial Group, Inc. 1.9%
Muyuan Foods Company, Ltd., Class A 1.9%
C000047761 [Member]  
Shareholder Report [Line Items]  
Fund Name Disciplined Value Emerging Markets Equity Trust
Class Name Series NAV
Trading Symbol JHVTX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Disciplined Value Emerging Markets Equity Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Disciplined Value Emerging Markets Equity Trust
(Series NAV/JHVTX)		 $49 0.92%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.92%
Net Assets $ 240,181,254
Holdings Count | Holding 170
Investment Company Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $240,181,254
Total number of portfolio holdings 170
Portfolio turnover rate 97%
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.
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 5.1%
Tencent Holdings, Ltd. 4.9%
Samsung Electronics Company, Ltd. 2.9%
Hyundai Mobis Company, Ltd. 2.8%
WuXi AppTec Company, Ltd., H Shares 2.5%
Samsung Electronics Company, Ltd. 2.3%
Sendas Distribuidora SA 2.0%
Millicom International Cellular SA 2.0%
Hana Financial Group, Inc. 1.9%
Muyuan Foods Company, Ltd., Class A 1.9%
Sector Composition
Information technology 17.3%
Communication services 13.5%
Consumer staples 11.9%
Financials 11.8%
Consumer discretionary 10.9%
Health care 7.7%
Materials 7.7%
Industrials 7.5%
Energy 1.6%
Real estate 1.6%
Utilities 0.4%
Short-term investments and other 8.1%
Country Composition
Graphical Representation - Allocation 2 Chart
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.
Largest Holdings [Text Block]
Top Ten Holdings
Taiwan Semiconductor Manufacturing Company, Ltd. 5.1%
Tencent Holdings, Ltd. 4.9%
Samsung Electronics Company, Ltd. 2.9%
Hyundai Mobis Company, Ltd. 2.8%
WuXi AppTec Company, Ltd., H Shares 2.5%
Samsung Electronics Company, Ltd. 2.3%
Sendas Distribuidora SA 2.0%
Millicom International Cellular SA 2.0%
Hana Financial Group, Inc. 1.9%
Muyuan Foods Company, Ltd., Class A 1.9%
C000047764 [Member]  
Shareholder Report [Line Items]  
Fund Name American Global Growth Trust
Class Name Series I
Trading Symbol JAJQX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Global Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Global Growth Trust
(Series I/JAJQX)		 $34 0.65%
Expenses Paid, Amount $ 34
Expense Ratio, Percent 0.65%
Net Assets $ 200,483,467
Holdings Count | Holding 1
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $200,483,467
Total number of portfolio holdings 1
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Global Growth Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 28.6%
Financials 16.2%
Industrials 15.3%
Consumer discretionary 14.6%
Health care 8.8%
Communication services 6.4%
Consumer staples 3.2%
Energy 2.2%
Materials 2.1%
Utilities 0.5%
Real estate 0.1%
Short-term investments and other 2.0%
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.
C000047762 [Member]  
Shareholder Report [Line Items]  
Fund Name American Global Growth Trust
Class Name Series II
Trading Symbol JAHWX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Global Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Global Growth Trust
(Series II/JAHWX)		 $38 0.72%
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.72%
Net Assets $ 200,483,467
Holdings Count | Holding 1
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $200,483,467
Total number of portfolio holdings 1
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Global Growth Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 28.6%
Financials 16.2%
Industrials 15.3%
Consumer discretionary 14.6%
Health care 8.8%
Communication services 6.4%
Consumer staples 3.2%
Energy 2.2%
Materials 2.1%
Utilities 0.5%
Real estate 0.1%
Short-term investments and other 2.0%
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.
C000047763 [Member]  
Shareholder Report [Line Items]  
Fund Name American Global Growth Trust
Class Name Series III
Trading Symbol JAHVX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the American Global Growth Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
American Global Growth Trust
(Series III/JAHVX)		 $16 0.30%
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.30%
Net Assets $ 200,483,467
Holdings Count | Holding 1
Investment Company Portfolio Turnover 10.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $200,483,467
Total number of portfolio holdings 1
Portfolio turnover rate 10%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund. The weightings represent the holdings of American Funds Insurance Series – Global Growth Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 28.6%
Financials 16.2%
Industrials 15.3%
Consumer discretionary 14.6%
Health care 8.8%
Communication services 6.4%
Consumer staples 3.2%
Energy 2.2%
Materials 2.1%
Utilities 0.5%
Real estate 0.1%
Short-term investments and other 2.0%
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.
C000063027 [Member]  
Shareholder Report [Line Items]  
Fund Name Capital Appreciation Value Trust
Class Name Series I
Trading Symbol JAFPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Capital Appreciation Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Capital Appreciation Value Trust
(Series I/JAFPX)		 $46 0.90%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.90%
Net Assets $ 483,775,251
Holdings Count | Holding 251
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $483,775,251
Total number of portfolio holdings 251
Portfolio turnover rate 61%
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.
Top Ten Holdings
Microsoft Corp. 6.6%
U.S. Treasury Note, 4.000%, 02/28/2030 4.3%
Amazon.com, Inc. 4.2%
U.S. Treasury Note, 4.000%, 05/31/2030 3.7%
NVIDIA Corp. 3.5%
U.S. Treasury Note, 3.875%, 04/30/2030 3.3%
Becton, Dickinson and Company 2.7%
Roper Technologies, Inc. 2.7%
U.S. Treasury Note, 4.000%, 03/31/2030 2.5%
PTC, Inc. 2.3%
Portfolio Composition
Common stocks 60.5%
U.S. Government 14.2%
Term loans 9.2%
Corporate bonds 7.4%
Asset-backed securities 0.1%
Short-term investments and other 8.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 6.6%
U.S. Treasury Note, 4.000%, 02/28/2030 4.3%
Amazon.com, Inc. 4.2%
U.S. Treasury Note, 4.000%, 05/31/2030 3.7%
NVIDIA Corp. 3.5%
U.S. Treasury Note, 3.875%, 04/30/2030 3.3%
Becton, Dickinson and Company 2.7%
Roper Technologies, Inc. 2.7%
U.S. Treasury Note, 4.000%, 03/31/2030 2.5%
PTC, Inc. 2.3%
C000063028 [Member]  
Shareholder Report [Line Items]  
Fund Name Capital Appreciation Value Trust
Class Name Series II
Trading Symbol JAFQX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Capital Appreciation Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Capital Appreciation Value Trust
(Series II/JAFQX)		 $56 1.10%
Expenses Paid, Amount $ 56
Expense Ratio, Percent 1.10%
Net Assets $ 483,775,251
Holdings Count | Holding 251
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $483,775,251
Total number of portfolio holdings 251
Portfolio turnover rate 61%
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.
Top Ten Holdings
Microsoft Corp. 6.6%
U.S. Treasury Note, 4.000%, 02/28/2030 4.3%
Amazon.com, Inc. 4.2%
U.S. Treasury Note, 4.000%, 05/31/2030 3.7%
NVIDIA Corp. 3.5%
U.S. Treasury Note, 3.875%, 04/30/2030 3.3%
Becton, Dickinson and Company 2.7%
Roper Technologies, Inc. 2.7%
U.S. Treasury Note, 4.000%, 03/31/2030 2.5%
PTC, Inc. 2.3%
Portfolio Composition
Common stocks 60.5%
U.S. Government 14.2%
Term loans 9.2%
Corporate bonds 7.4%
Asset-backed securities 0.1%
Short-term investments and other 8.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 6.6%
U.S. Treasury Note, 4.000%, 02/28/2030 4.3%
Amazon.com, Inc. 4.2%
U.S. Treasury Note, 4.000%, 05/31/2030 3.7%
NVIDIA Corp. 3.5%
U.S. Treasury Note, 3.875%, 04/30/2030 3.3%
Becton, Dickinson and Company 2.7%
Roper Technologies, Inc. 2.7%
U.S. Treasury Note, 4.000%, 03/31/2030 2.5%
PTC, Inc. 2.3%
C000063026 [Member]  
Shareholder Report [Line Items]  
Fund Name Capital Appreciation Value Trust
Class Name Series NAV
Trading Symbol JAFRX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Capital Appreciation Value Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Capital Appreciation Value Trust
(Series NAV/JAFRX)		 $43 0.85%
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.85%
Net Assets $ 483,775,251
Holdings Count | Holding 251
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $483,775,251
Total number of portfolio holdings 251
Portfolio turnover rate 61%
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.
Top Ten Holdings
Microsoft Corp. 6.6%
U.S. Treasury Note, 4.000%, 02/28/2030 4.3%
Amazon.com, Inc. 4.2%
U.S. Treasury Note, 4.000%, 05/31/2030 3.7%
NVIDIA Corp. 3.5%
U.S. Treasury Note, 3.875%, 04/30/2030 3.3%
Becton, Dickinson and Company 2.7%
Roper Technologies, Inc. 2.7%
U.S. Treasury Note, 4.000%, 03/31/2030 2.5%
PTC, Inc. 2.3%
Portfolio Composition
Common stocks 60.5%
U.S. Government 14.2%
Term loans 9.2%
Corporate bonds 7.4%
Asset-backed securities 0.1%
Short-term investments and other 8.6%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 6.6%
U.S. Treasury Note, 4.000%, 02/28/2030 4.3%
Amazon.com, Inc. 4.2%
U.S. Treasury Note, 4.000%, 05/31/2030 3.7%
NVIDIA Corp. 3.5%
U.S. Treasury Note, 3.875%, 04/30/2030 3.3%
Becton, Dickinson and Company 2.7%
Roper Technologies, Inc. 2.7%
U.S. Treasury Note, 4.000%, 03/31/2030 2.5%
PTC, Inc. 2.3%
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 semiannual shareholder report contains important information about the Short Term Government Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Short Term Government Income Trust
(Series I/JAJPX)		 $35 0.70%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.70%
Net Assets $ 243,431,594
Holdings Count | Holding 95
Investment Company Portfolio Turnover 202.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $243,431,594
Total number of portfolio holdings 95
Portfolio turnover rate 202%
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
U.S. Government 50.9%
U.S. Government Agency 45.8%
Municipal bonds 2.0%
Collateralized mortgage obligations – U.S. Government Agency 0.3%
Short-term investments and other 1.0%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Short Term Government Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Short Term Government Income Trust
(Series II/JAFWX)		 $45 0.90%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.90%
Net Assets $ 243,431,594
Holdings Count | Holding 95
Investment Company Portfolio Turnover 202.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $243,431,594
Total number of portfolio holdings 95
Portfolio turnover rate 202%
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
U.S. Government 50.9%
U.S. Government Agency 45.8%
Municipal bonds 2.0%
Collateralized mortgage obligations – U.S. Government Agency 0.3%
Short-term investments and other 1.0%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Short Term Government Income Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Short Term Government Income Trust
(Series NAV/JAFYX)		 $33 0.65%
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.65%
Net Assets $ 243,431,594
Holdings Count | Holding 95
Investment Company Portfolio Turnover 202.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $243,431,594
Total number of portfolio holdings 95
Portfolio turnover rate 202%
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
U.S. Government 50.9%
U.S. Government Agency 45.8%
Municipal bonds 2.0%
Collateralized mortgage obligations – U.S. Government Agency 0.3%
Short-term investments and other 1.0%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Select Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Select Bond Trust
(Series I/JAFZX)		 $32 0.63%
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.63%
Net Assets $ 5,551,671,842
Holdings Count | Holding 765
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,551,671,842
Total number of portfolio holdings 765
Portfolio turnover rate 54%
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
U.S. Government Agency 38.6%
Corporate bonds 29.1%
U.S. Government 17.7%
Asset-backed securities 7.4%
Collateralized mortgage obligations – Commercial and residential 3.8%
Collateralized mortgage obligations – U.S. Government Agency 1.1%
Municipal bonds 0.4%
Short-term investments and other 1.9%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Select Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Select Bond Trust
(Series II/JHBDX)		 $42 0.83%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.83%
Net Assets $ 5,551,671,842
Holdings Count | Holding 765
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,551,671,842
Total number of portfolio holdings 765
Portfolio turnover rate 54%
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
U.S. Government Agency 38.6%
Corporate bonds 29.1%
U.S. Government 17.7%
Asset-backed securities 7.4%
Collateralized mortgage obligations – Commercial and residential 3.8%
Collateralized mortgage obligations – U.S. Government Agency 1.1%
Municipal bonds 0.4%
Short-term investments and other 1.9%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Select Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Select Bond Trust
(Series NAV/JAGBX)		 $30 0.59%
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.59%
Net Assets $ 5,551,671,842
Holdings Count | Holding 765
Investment Company Portfolio Turnover 54.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,551,671,842
Total number of portfolio holdings 765
Portfolio turnover rate 54%
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
U.S. Government Agency 38.6%
Corporate bonds 29.1%
U.S. Government 17.7%
Asset-backed securities 7.4%
Collateralized mortgage obligations – Commercial and residential 3.8%
Collateralized mortgage obligations – U.S. Government Agency 1.1%
Municipal bonds 0.4%
Short-term investments and other 1.9%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Ultra Short Term Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Ultra Short Term Bond Trust
(Series I/JAGJX)		 $31 0.61%
Expenses Paid, Amount $ 31
Expense Ratio, Percent 0.61%
Net Assets $ 229,660,118
Holdings Count | Holding 198
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $229,660,118
Total number of portfolio holdings 198
Portfolio turnover rate 29%
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
Corporate bonds 52.9%
Asset-backed securities 23.8%
U.S. Government Agency 0.4%
Collateralized mortgage obligations – U.S. Government Agency 0.2%
Collateralized mortgage obligations – Commercial and residential 0.1%
Short-term investments and other 22.6%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Ultra Short Term Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Ultra Short Term Bond Trust
(Series II/JAGEX)		 $41 0.81%
Expenses Paid, Amount $ 41
Expense Ratio, Percent 0.81%
Net Assets $ 229,660,118
Holdings Count | Holding 198
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $229,660,118
Total number of portfolio holdings 198
Portfolio turnover rate 29%
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
Corporate bonds 52.9%
Asset-backed securities 23.8%
U.S. Government Agency 0.4%
Collateralized mortgage obligations – U.S. Government Agency 0.2%
Collateralized mortgage obligations – Commercial and residential 0.1%
Short-term investments and other 22.6%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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 semiannual shareholder report contains important information about the Ultra Short Term Bond Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Ultra Short Term Bond Trust
(Series NAV/JAGFX)		 $28 0.56%
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.56%
Net Assets $ 229,660,118
Holdings Count | Holding 198
Investment Company Portfolio Turnover 29.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $229,660,118
Total number of portfolio holdings 198
Portfolio turnover rate 29%
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
Corporate bonds 52.9%
Asset-backed securities 23.8%
U.S. Government Agency 0.4%
Collateralized mortgage obligations – U.S. Government Agency 0.2%
Collateralized mortgage obligations – Commercial and residential 0.1%
Short-term investments and other 22.6%
Quality Composition
Graphical Representation - Allocation 1 Chart
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 6-30-25 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 6-30-25 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.
C000099620 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Balanced Portfolio
Class Name Series I
Trading Symbol JHBPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Balanced Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Balanced Portfolio
(Series I/JHBPX)		 $6 0.12%
Expenses Paid, Amount $ 6
Expense Ratio, Percent 0.12%
Net Assets $ 979,477,236
Holdings Count | Holding 3
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $979,477,236
Total number of portfolio holdings 3
Portfolio turnover rate 1%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Equity 51.4%
Fixed income 48.6%
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.
C000099621 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Balanced Portfolio
Class Name Series II
Trading Symbol JAILX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Balanced Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Balanced Portfolio
(Series II/JAILX)		 $16 0.32%
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.32%
Net Assets $ 979,477,236
Holdings Count | Holding 3
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $979,477,236
Total number of portfolio holdings 3
Portfolio turnover rate 1%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Equity 51.4%
Fixed income 48.6%
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.
C000099622 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Balanced Portfolio
Class Name Series NAV
Trading Symbol JAINX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Balanced Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Balanced Portfolio
(Series NAV/JAINX)		 $4 0.07%
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.07%
Net Assets $ 979,477,236
Holdings Count | Holding 3
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $979,477,236
Total number of portfolio holdings 3
Portfolio turnover rate 1%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Equity 51.4%
Fixed income 48.6%
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.
C000099623 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Conservative Portfolio
Class Name Series I
Trading Symbol JHCIX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Conservative Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Conservative Portfolio
(Series I/JHCIX)		 $7 0.13%
Expenses Paid, Amount $ 7
Expense Ratio, Percent 0.13%
Net Assets $ 153,058,106
Holdings Count | Holding 3
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $153,058,106
Total number of portfolio holdings 3
Portfolio turnover rate 3%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Fixed income 79.9%
Equity 20.1%
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.
C000099624 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Conservative Portfolio
Class Name Series II
Trading Symbol JAIRX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Conservative Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Conservative Portfolio
(Series II/JAIRX)		 $17 0.33%
Expenses Paid, Amount $ 17
Expense Ratio, Percent 0.33%
Net Assets $ 153,058,106
Holdings Count | Holding 3
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $153,058,106
Total number of portfolio holdings 3
Portfolio turnover rate 3%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Fixed income 79.9%
Equity 20.1%
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.
C000099625 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Conservative Portfolio
Class Name Series NAV
Trading Symbol JAIQX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Conservative Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Conservative Portfolio
(Series NAV/JAIQX)		 $4 0.08%
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08%
Net Assets $ 153,058,106
Holdings Count | Holding 3
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $153,058,106
Total number of portfolio holdings 3
Portfolio turnover rate 3%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Fixed income 79.9%
Equity 20.1%
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.
C000099626 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Growth Portfolio
Class Name Series I
Trading Symbol JHGPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Growth Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Growth Portfolio
(Series I/JHGPX)		 $6 0.12%
Expenses Paid, Amount $ 6
Expense Ratio, Percent 0.12%
Net Assets $ 5,133,700,741
Holdings Count | Holding 3
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,133,700,741
Total number of portfolio holdings 3
Portfolio turnover rate 0%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Equity 71.5%
Fixed income 28.5%
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.
C000099627 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Growth Portfolio
Class Name Series II
Trading Symbol JAIKX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Growth Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Growth Portfolio
(Series II/JAIKX)		 $17 0.32%
Expenses Paid, Amount $ 17
Expense Ratio, Percent 0.32%
Net Assets $ 5,133,700,741
Holdings Count | Holding 3
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,133,700,741
Total number of portfolio holdings 3
Portfolio turnover rate 0%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Equity 71.5%
Fixed income 28.5%
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.
C000099628 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Growth Portfolio
Class Name Series NAV
Trading Symbol JAIJX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Growth Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Growth Portfolio
(Series NAV/JAIJX)		 $4 0.07%
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.07%
Net Assets $ 5,133,700,741
Holdings Count | Holding 3
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,133,700,741
Total number of portfolio holdings 3
Portfolio turnover rate 0%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Equity 71.5%
Fixed income 28.5%
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.
C000099629 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Moderate Portfolio
Class Name Series I
Trading Symbol JHMPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Moderate Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Moderate Portfolio
(Series I/JHMPX)		 $7 0.13%
Expenses Paid, Amount $ 7
Expense Ratio, Percent 0.13%
Net Assets $ 269,529,024
Holdings Count | Holding 3
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $269,529,024
Total number of portfolio holdings 3
Portfolio turnover rate 2%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Fixed income 59.4%
Equity 40.6%
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.
C000099630 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Moderate Portfolio
Class Name Series II
Trading Symbol JAIPX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Moderate Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Moderate Portfolio
(Series II/JAIPX)		 $17 0.33%
Expenses Paid, Amount $ 17
Expense Ratio, Percent 0.33%
Net Assets $ 269,529,024
Holdings Count | Holding 3
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $269,529,024
Total number of portfolio holdings 3
Portfolio turnover rate 2%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Fixed income 59.4%
Equity 40.6%
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.
C000099631 [Member]  
Shareholder Report [Line Items]  
Fund Name Lifestyle Moderate Portfolio
Class Name Series NAV
Trading Symbol JAIOX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Lifestyle Moderate Portfolio (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Moderate Portfolio
(Series NAV/JAIOX)		 $4 0.08%
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08%
Net Assets $ 269,529,024
Holdings Count | Holding 3
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $269,529,024
Total number of portfolio holdings 3
Portfolio turnover rate 2%
Holdings [Text Block]
Graphical Representation of Holdings
The table below shows the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Asset Allocation
Affiliated investment companies 100.0%
Fixed income 59.4%
Equity 40.6%
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.
C000111804 [Member]  
Shareholder Report [Line Items]  
Fund Name Strategic Equity Allocation Trust
Class Name Series NAV
Trading Symbol JAFVX
Annual or Semi-Annual Statement [Text Block] This semiannual shareholder report contains important information about the Strategic Equity Allocation Trust (the fund) for the period of January 1, 2025 to June 30, 2025.
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)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Strategic Equity Allocation Trust
(Series NAV/JAFVX)		 $28 0.54%
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.54%
Net Assets $ 6,991,406,203
Holdings Count | Holding 3,345
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $6,991,406,203
Total number of portfolio holdings 3,345
Portfolio turnover rate 2%
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.
Top Ten Holdings
NVIDIA Corp. 3.9%
Microsoft Corp. 3.8%
Apple, Inc. 3.1%
Amazon.com, Inc. 2.1%
Meta Platforms, Inc., Class A 1.6%
Broadcom, Inc. 1.3%
Alphabet, Inc., Class A 1.1%
Berkshire Hathaway, Inc., Class B 0.9%
Tesla, Inc. 0.9%
Alphabet, Inc., Class C 0.9%
Sector Composition
Information technology 21.8%
Financials 17.2%
Industrials 13.0%
Consumer discretionary 10.0%
Health care 9.9%
Communication services 7.1%
Consumer staples 5.9%
Materials 3.3%
Energy 3.1%
Utilities 2.7%
Real estate 2.5%
Short-term investments and other 3.5%
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.
Largest Holdings [Text Block]
Top Ten Holdings
NVIDIA Corp. 3.9%
Microsoft Corp. 3.8%
Apple, Inc. 3.1%
Amazon.com, Inc. 2.1%
Meta Platforms, Inc., Class A 1.6%
Broadcom, Inc. 1.3%
Alphabet, Inc., Class A 1.1%
Berkshire Hathaway, Inc., Class B 0.9%
Tesla, Inc. 0.9%
Alphabet, Inc., Class C 0.9%