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Shareholder Report
 6 Months Ended
Jun. 30, 2026
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, 2026
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,100,818,345
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,100,818,345
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 39.0%
Communication services 14.5%
Consumer discretionary 13.2%
Health care 9.2%
Industrials 8.0%
Financials 6.0%
Consumer staples 2.1%
Energy 2.0%
Materials 2.0%
Real estate 1.3%
Utilities 0.6%
Short-term investments and other 2.1%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,100,818,345
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,100,818,345
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 39.0%
Communication services 14.5%
Consumer discretionary 13.2%
Health care 9.2%
Industrials 8.0%
Financials 6.0%
Consumer staples 2.1%
Energy 2.0%
Materials 2.0%
Real estate 1.3%
Utilities 0.6%
Short-term investments and other 2.1%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,100,818,345
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,100,818,345
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 39.0%
Communication services 14.5%
Consumer discretionary 13.2%
Health care 9.2%
Industrials 8.0%
Financials 6.0%
Consumer staples 2.1%
Energy 2.0%
Materials 2.0%
Real estate 1.3%
Utilities 0.6%
Short-term investments and other 2.1%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $38 0.76%
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.76%
Net Assets $ 2,576,280,130
Holdings Count | Holding 64
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,576,280,130
Total number of portfolio holdings 64
Portfolio turnover rate 30%
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. 15.8%
Alphabet, Inc., Class C 6.3%
Alphabet, Inc., Class A 5.9%
Broadcom, Inc. 5.8%
Apple, Inc. 4.4%
Microsoft Corp. 4.3%
Advanced Micro Devices, Inc. 3.6%
Meta Platforms, Inc., Class A 3.5%
Amazon.com, Inc. 3.3%
Eli Lilly & Company 3.2%
Sector Composition
Information technology 51.4%
Communication services 18.1%
Consumer discretionary 11.8%
Financials 6.8%
Health care 5.9%
Industrials 4.9%
Utilities 0.4%
Materials 0.3%
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. 15.8%
Alphabet, Inc., Class C 6.3%
Alphabet, Inc., Class A 5.9%
Broadcom, Inc. 5.8%
Apple, Inc. 4.4%
Microsoft Corp. 4.3%
Advanced Micro Devices, Inc. 3.6%
Meta Platforms, Inc., Class A 3.5%
Amazon.com, Inc. 3.3%
Eli Lilly & Company 3.2%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $48 0.96%
Expenses Paid, Amount $ 48
Expense Ratio, Percent 0.96%
Net Assets $ 2,576,280,130
Holdings Count | Holding 64
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,576,280,130
Total number of portfolio holdings 64
Portfolio turnover rate 30%
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. 15.8%
Alphabet, Inc., Class C 6.3%
Alphabet, Inc., Class A 5.9%
Broadcom, Inc. 5.8%
Apple, Inc. 4.4%
Microsoft Corp. 4.3%
Advanced Micro Devices, Inc. 3.6%
Meta Platforms, Inc., Class A 3.5%
Amazon.com, Inc. 3.3%
Eli Lilly & Company 3.2%
Sector Composition
Information technology 51.4%
Communication services 18.1%
Consumer discretionary 11.8%
Financials 6.8%
Health care 5.9%
Industrials 4.9%
Utilities 0.4%
Materials 0.3%
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. 15.8%
Alphabet, Inc., Class C 6.3%
Alphabet, Inc., Class A 5.9%
Broadcom, Inc. 5.8%
Apple, Inc. 4.4%
Microsoft Corp. 4.3%
Advanced Micro Devices, Inc. 3.6%
Meta Platforms, Inc., Class A 3.5%
Amazon.com, Inc. 3.3%
Eli Lilly & Company 3.2%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $35 0.71%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.71%
Net Assets $ 2,576,280,130
Holdings Count | Holding 64
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,576,280,130
Total number of portfolio holdings 64
Portfolio turnover rate 30%
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. 15.8%
Alphabet, Inc., Class C 6.3%
Alphabet, Inc., Class A 5.9%
Broadcom, Inc. 5.8%
Apple, Inc. 4.4%
Microsoft Corp. 4.3%
Advanced Micro Devices, Inc. 3.6%
Meta Platforms, Inc., Class A 3.5%
Amazon.com, Inc. 3.3%
Eli Lilly & Company 3.2%
Sector Composition
Information technology 51.4%
Communication services 18.1%
Consumer discretionary 11.8%
Financials 6.8%
Health care 5.9%
Industrials 4.9%
Utilities 0.4%
Materials 0.3%
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. 15.8%
Alphabet, Inc., Class C 6.3%
Alphabet, Inc., Class A 5.9%
Broadcom, Inc. 5.8%
Apple, Inc. 4.4%
Microsoft Corp. 4.3%
Advanced Micro Devices, Inc. 3.6%
Meta Platforms, Inc., Class A 3.5%
Amazon.com, Inc. 3.3%
Eli Lilly & Company 3.2%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 13,280,351,684
Holdings Count | Holding 506
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $13,280,351,684
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. 7.5%
Apple, Inc. 6.5%
Microsoft Corp. 4.3%
Amazon.com, Inc. 3.6%
Alphabet, Inc., Class A 3.2%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class C 2.6%
Micron Technology, Inc. 2.0%
Meta Platforms, Inc., Class A 1.9%
Tesla, Inc. 1.8%
Sector Composition
Information technology 37.7%
Financials 11.7%
Communication services 9.6%
Consumer discretionary 9.2%
Industrials 8.8%
Health care 8.8%
Consumer staples 4.5%
Energy 3.0%
Utilities 2.2%
Materials 1.8%
Real estate 1.8%
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
NVIDIA Corp. 7.5%
Apple, Inc. 6.5%
Microsoft Corp. 4.3%
Amazon.com, Inc. 3.6%
Alphabet, Inc., Class A 3.2%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class C 2.6%
Micron Technology, Inc. 2.0%
Meta Platforms, Inc., Class A 1.9%
Tesla, Inc. 1.8%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 13,280,351,684
Holdings Count | Holding 506
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $13,280,351,684
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. 7.5%
Apple, Inc. 6.5%
Microsoft Corp. 4.3%
Amazon.com, Inc. 3.6%
Alphabet, Inc., Class A 3.2%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class C 2.6%
Micron Technology, Inc. 2.0%
Meta Platforms, Inc., Class A 1.9%
Tesla, Inc. 1.8%
Sector Composition
Information technology 37.7%
Financials 11.7%
Communication services 9.6%
Consumer discretionary 9.2%
Industrials 8.8%
Health care 8.8%
Consumer staples 4.5%
Energy 3.0%
Utilities 2.2%
Materials 1.8%
Real estate 1.8%
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
NVIDIA Corp. 7.5%
Apple, Inc. 6.5%
Microsoft Corp. 4.3%
Amazon.com, Inc. 3.6%
Alphabet, Inc., Class A 3.2%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class C 2.6%
Micron Technology, Inc. 2.0%
Meta Platforms, Inc., Class A 1.9%
Tesla, Inc. 1.8%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
500 Index Trust
(Series I/JFIVX)		 $16 0.30%
Expenses Paid, Amount $ 16
Expense Ratio, Percent 0.30%
Net Assets $ 13,280,351,684
Holdings Count | Holding 506
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $13,280,351,684
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. 7.5%
Apple, Inc. 6.5%
Microsoft Corp. 4.3%
Amazon.com, Inc. 3.6%
Alphabet, Inc., Class A 3.2%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class C 2.6%
Micron Technology, Inc. 2.0%
Meta Platforms, Inc., Class A 1.9%
Tesla, Inc. 1.8%
Sector Composition
Information technology 37.7%
Financials 11.7%
Communication services 9.6%
Consumer discretionary 9.2%
Industrials 8.8%
Health care 8.8%
Consumer staples 4.5%
Energy 3.0%
Utilities 2.2%
Materials 1.8%
Real estate 1.8%
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
NVIDIA Corp. 7.5%
Apple, Inc. 6.5%
Microsoft Corp. 4.3%
Amazon.com, Inc. 3.6%
Alphabet, Inc., Class A 3.2%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class C 2.6%
Micron Technology, Inc. 2.0%
Meta Platforms, Inc., Class A 1.9%
Tesla, Inc. 1.8%
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 (the fund) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $33 0.64%
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.64%
Net Assets $ 747,317,081
Holdings Count | Holding 49
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $747,317,081
Total number of portfolio holdings 49
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
NVIDIA Corp. 12.6%
Alphabet, Inc., Class A 9.0%
Apple, Inc. 5.2%
Broadcom, Inc. 4.8%
KLA Corp. 4.4%
Eli Lilly & Company 3.9%
Tesla, Inc. 3.7%
Advanced Micro Devices, Inc. 3.5%
Micron Technology, Inc. 3.2%
Microsoft Corp. 3.0%
Sector Composition
Information technology 50.1%
Communication services 11.4%
Consumer discretionary 10.6%
Health care 9.1%
Industrials 5.9%
Financials 3.8%
Consumer staples 3.2%
Real estate 2.8%
Energy 1.9%
Materials 1.0%
Short-term investments and other 0.2%
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. 12.6%
Alphabet, Inc., Class A 9.0%
Apple, Inc. 5.2%
Broadcom, Inc. 4.8%
KLA Corp. 4.4%
Eli Lilly & Company 3.9%
Tesla, Inc. 3.7%
Advanced Micro Devices, Inc. 3.5%
Micron Technology, Inc. 3.2%
Microsoft Corp. 3.0%
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 (the fund) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $43 0.84%
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.84%
Net Assets $ 747,317,081
Holdings Count | Holding 49
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $747,317,081
Total number of portfolio holdings 49
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
NVIDIA Corp. 12.6%
Alphabet, Inc., Class A 9.0%
Apple, Inc. 5.2%
Broadcom, Inc. 4.8%
KLA Corp. 4.4%
Eli Lilly & Company 3.9%
Tesla, Inc. 3.7%
Advanced Micro Devices, Inc. 3.5%
Micron Technology, Inc. 3.2%
Microsoft Corp. 3.0%
Sector Composition
Information technology 50.1%
Communication services 11.4%
Consumer discretionary 10.6%
Health care 9.1%
Industrials 5.9%
Financials 3.8%
Consumer staples 3.2%
Real estate 2.8%
Energy 1.9%
Materials 1.0%
Short-term investments and other 0.2%
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. 12.6%
Alphabet, Inc., Class A 9.0%
Apple, Inc. 5.2%
Broadcom, Inc. 4.8%
KLA Corp. 4.4%
Eli Lilly & Company 3.9%
Tesla, Inc. 3.7%
Advanced Micro Devices, Inc. 3.5%
Micron Technology, Inc. 3.2%
Microsoft Corp. 3.0%
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 (the fund) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $30 0.59%
Expenses Paid, Amount $ 30
Expense Ratio, Percent 0.59%
Net Assets $ 747,317,081
Holdings Count | Holding 49
Investment Company Portfolio Turnover 61.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $747,317,081
Total number of portfolio holdings 49
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
NVIDIA Corp. 12.6%
Alphabet, Inc., Class A 9.0%
Apple, Inc. 5.2%
Broadcom, Inc. 4.8%
KLA Corp. 4.4%
Eli Lilly & Company 3.9%
Tesla, Inc. 3.7%
Advanced Micro Devices, Inc. 3.5%
Micron Technology, Inc. 3.2%
Microsoft Corp. 3.0%
Sector Composition
Information technology 50.1%
Communication services 11.4%
Consumer discretionary 10.6%
Health care 9.1%
Industrials 5.9%
Financials 3.8%
Consumer staples 3.2%
Real estate 2.8%
Energy 1.9%
Materials 1.0%
Short-term investments and other 0.2%
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. 12.6%
Alphabet, Inc., Class A 9.0%
Apple, Inc. 5.2%
Broadcom, Inc. 4.8%
KLA Corp. 4.4%
Eli Lilly & Company 3.9%
Tesla, Inc. 3.7%
Advanced Micro Devices, Inc. 3.5%
Micron Technology, Inc. 3.2%
Microsoft Corp. 3.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Equity Income Trust
(Series NAV/JAEEX)		 $37 0.70%
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.70%
Net Assets $ 938,140,968
Holdings Count | Holding 119
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $938,140,968
Total number of portfolio holdings 119
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
Amazon.com, Inc. 5.4%
Microsoft Corp. 4.3%
Apple, Inc. 3.8%
MetLife, Inc. 2.0%
Intel Corp. 2.0%
The Southern Company 1.9%
Citigroup, Inc. 1.8%
Qualcomm, Inc. 1.8%
JPMorgan Chase & Co. 1.7%
The Charles Schwab Corp. 1.6%
Sector Composition
Financials 19.8%
Information technology 16.4%
Industrials 13.8%
Health care 13.0%
Energy 8.3%
Consumer discretionary 7.4%
Consumer staples 6.6%
Utilities 5.7%
Materials 3.0%
Real estate 3.0%
Communication services 2.6%
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. 5.4%
Microsoft Corp. 4.3%
Apple, Inc. 3.8%
MetLife, Inc. 2.0%
Intel Corp. 2.0%
The Southern Company 1.9%
Citigroup, Inc. 1.8%
Qualcomm, Inc. 1.8%
JPMorgan Chase & Co. 1.7%
The Charles Schwab Corp. 1.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Equity Income Trust
(Series II/JAEFX)		 $50 0.95%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.95%
Net Assets $ 938,140,968
Holdings Count | Holding 119
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $938,140,968
Total number of portfolio holdings 119
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
Amazon.com, Inc. 5.4%
Microsoft Corp. 4.3%
Apple, Inc. 3.8%
MetLife, Inc. 2.0%
Intel Corp. 2.0%
The Southern Company 1.9%
Citigroup, Inc. 1.8%
Qualcomm, Inc. 1.8%
JPMorgan Chase & Co. 1.7%
The Charles Schwab Corp. 1.6%
Sector Composition
Financials 19.8%
Information technology 16.4%
Industrials 13.8%
Health care 13.0%
Energy 8.3%
Consumer discretionary 7.4%
Consumer staples 6.6%
Utilities 5.7%
Materials 3.0%
Real estate 3.0%
Communication services 2.6%
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. 5.4%
Microsoft Corp. 4.3%
Apple, Inc. 3.8%
MetLife, Inc. 2.0%
Intel Corp. 2.0%
The Southern Company 1.9%
Citigroup, Inc. 1.8%
Qualcomm, Inc. 1.8%
JPMorgan Chase & Co. 1.7%
The Charles Schwab Corp. 1.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Equity Income Trust
(Series I/JAEGX)		 $40 0.75%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.75%
Net Assets $ 938,140,968
Holdings Count | Holding 119
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $938,140,968
Total number of portfolio holdings 119
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
Amazon.com, Inc. 5.4%
Microsoft Corp. 4.3%
Apple, Inc. 3.8%
MetLife, Inc. 2.0%
Intel Corp. 2.0%
The Southern Company 1.9%
Citigroup, Inc. 1.8%
Qualcomm, Inc. 1.8%
JPMorgan Chase & Co. 1.7%
The Charles Schwab Corp. 1.6%
Sector Composition
Financials 19.8%
Information technology 16.4%
Industrials 13.8%
Health care 13.0%
Energy 8.3%
Consumer discretionary 7.4%
Consumer staples 6.6%
Utilities 5.7%
Materials 3.0%
Real estate 3.0%
Communication services 2.6%
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. 5.4%
Microsoft Corp. 4.3%
Apple, Inc. 3.8%
MetLife, Inc. 2.0%
Intel Corp. 2.0%
The Southern Company 1.9%
Citigroup, Inc. 1.8%
Qualcomm, Inc. 1.8%
JPMorgan Chase & Co. 1.7%
The Charles Schwab Corp. 1.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 0.93%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.93%
Net Assets $ 127,282,888
Holdings Count | Holding 45
Investment Company Portfolio Turnover 37.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $127,282,888
Total number of portfolio holdings 45
Portfolio turnover rate 37%
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
Morgan Stanley 4.9%
Citizens Financial Group, Inc. 4.7%
Citigroup, Inc. 4.5%
Fifth Third Bancorp 4.4%
Columbia Banking System, Inc. 3.9%
NN Group NV 3.6%
Popular, Inc. 3.5%
Sumitomo Mitsui Trust Group, Inc. 3.5%
CaixaBank SA 3.4%
Bank of America Corp. 3.0%
Industry Composition
Banks 58.0%
Insurance 15.1%
Capital markets 14.3%
Financial services 6.0%
Industrial REITs 2.3%
Consumer finance 2.1%
Specialized REITs 1.4%
Short-term investments and other 0.8%
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
Morgan Stanley 4.9%
Citizens Financial Group, Inc. 4.7%
Citigroup, Inc. 4.5%
Fifth Third Bancorp 4.4%
Columbia Banking System, Inc. 3.9%
NN Group NV 3.6%
Popular, Inc. 3.5%
Sumitomo Mitsui Trust Group, Inc. 3.5%
CaixaBank SA 3.4%
Bank of America Corp. 3.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 1.13%
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.13%
Net Assets $ 127,282,888
Holdings Count | Holding 45
Investment Company Portfolio Turnover 37.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $127,282,888
Total number of portfolio holdings 45
Portfolio turnover rate 37%
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
Morgan Stanley 4.9%
Citizens Financial Group, Inc. 4.7%
Citigroup, Inc. 4.5%
Fifth Third Bancorp 4.4%
Columbia Banking System, Inc. 3.9%
NN Group NV 3.6%
Popular, Inc. 3.5%
Sumitomo Mitsui Trust Group, Inc. 3.5%
CaixaBank SA 3.4%
Bank of America Corp. 3.0%
Industry Composition
Banks 58.0%
Insurance 15.1%
Capital markets 14.3%
Financial services 6.0%
Industrial REITs 2.3%
Consumer finance 2.1%
Specialized REITs 1.4%
Short-term investments and other 0.8%
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
Morgan Stanley 4.9%
Citizens Financial Group, Inc. 4.7%
Citigroup, Inc. 4.5%
Fifth Third Bancorp 4.4%
Columbia Banking System, Inc. 3.9%
NN Group NV 3.6%
Popular, Inc. 3.5%
Sumitomo Mitsui Trust Group, Inc. 3.5%
CaixaBank SA 3.4%
Bank of America Corp. 3.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Financial Industries Trust
(Series NAV/JAFNX)		 $44 0.88%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.88%
Net Assets $ 127,282,888
Holdings Count | Holding 45
Investment Company Portfolio Turnover 37.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $127,282,888
Total number of portfolio holdings 45
Portfolio turnover rate 37%
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
Morgan Stanley 4.9%
Citizens Financial Group, Inc. 4.7%
Citigroup, Inc. 4.5%
Fifth Third Bancorp 4.4%
Columbia Banking System, Inc. 3.9%
NN Group NV 3.6%
Popular, Inc. 3.5%
Sumitomo Mitsui Trust Group, Inc. 3.5%
CaixaBank SA 3.4%
Bank of America Corp. 3.0%
Industry Composition
Banks 58.0%
Insurance 15.1%
Capital markets 14.3%
Financial services 6.0%
Industrial REITs 2.3%
Consumer finance 2.1%
Specialized REITs 1.4%
Short-term investments and other 0.8%
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
Morgan Stanley 4.9%
Citizens Financial Group, Inc. 4.7%
Citigroup, Inc. 4.5%
Fifth Third Bancorp 4.4%
Columbia Banking System, Inc. 3.9%
NN Group NV 3.6%
Popular, Inc. 3.5%
Sumitomo Mitsui Trust Group, Inc. 3.5%
CaixaBank SA 3.4%
Bank of America Corp. 3.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Global Equity Trust
(Series NAV/JAJGX)		 $44 0.87%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.87%
Net Assets $ 302,416,328
Holdings Count | Holding 72
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $302,416,328
Total number of portfolio holdings 72
Portfolio turnover rate 39%
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. 3.1%
Taiwan Semiconductor Manufacturing Company, Ltd. 2.6%
Analog Devices, Inc. 2.1%
American Electric Power Company, Inc. 2.1%
Anheuser-Busch InBev SA/NV 2.0%
Citigroup, Inc. 2.0%
International Flavors & Fragrances, Inc. 2.0%
National Grid PLC 1.9%
CRH PLC 1.9%
U.S. Foods Holding Corp. 1.9%
Sector Composition
Financials 19.6%
Information technology 14.2%
Industrials 14.0%
Consumer staples 8.8%
Materials 8.7%
Health care 8.5%
Communication services 7.3%
Consumer discretionary 6.3%
Energy 5.6%
Utilities 4.0%
Real estate 1.0%
Short-term investments and other 2.0%
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. 3.1%
Taiwan Semiconductor Manufacturing Company, Ltd. 2.6%
Analog Devices, Inc. 2.1%
American Electric Power Company, Inc. 2.1%
Anheuser-Busch InBev SA/NV 2.0%
Citigroup, Inc. 2.0%
International Flavors & Fragrances, Inc. 2.0%
National Grid PLC 1.9%
CRH PLC 1.9%
U.S. Foods Holding Corp. 1.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Global Equity Trust
(Series II/JAJFX)		 $57 1.12%
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.12%
Net Assets $ 302,416,328
Holdings Count | Holding 72
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $302,416,328
Total number of portfolio holdings 72
Portfolio turnover rate 39%
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. 3.1%
Taiwan Semiconductor Manufacturing Company, Ltd. 2.6%
Analog Devices, Inc. 2.1%
American Electric Power Company, Inc. 2.1%
Anheuser-Busch InBev SA/NV 2.0%
Citigroup, Inc. 2.0%
International Flavors & Fragrances, Inc. 2.0%
National Grid PLC 1.9%
CRH PLC 1.9%
U.S. Foods Holding Corp. 1.9%
Sector Composition
Financials 19.6%
Information technology 14.2%
Industrials 14.0%
Consumer staples 8.8%
Materials 8.7%
Health care 8.5%
Communication services 7.3%
Consumer discretionary 6.3%
Energy 5.6%
Utilities 4.0%
Real estate 1.0%
Short-term investments and other 2.0%
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. 3.1%
Taiwan Semiconductor Manufacturing Company, Ltd. 2.6%
Analog Devices, Inc. 2.1%
American Electric Power Company, Inc. 2.1%
Anheuser-Busch InBev SA/NV 2.0%
Citigroup, Inc. 2.0%
International Flavors & Fragrances, Inc. 2.0%
National Grid PLC 1.9%
CRH PLC 1.9%
U.S. Foods Holding Corp. 1.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Global Equity Trust
(Series I/JEFGX)		 $47 0.92%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.92%
Net Assets $ 302,416,328
Holdings Count | Holding 72
Investment Company Portfolio Turnover 39.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $302,416,328
Total number of portfolio holdings 72
Portfolio turnover rate 39%
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. 3.1%
Taiwan Semiconductor Manufacturing Company, Ltd. 2.6%
Analog Devices, Inc. 2.1%
American Electric Power Company, Inc. 2.1%
Anheuser-Busch InBev SA/NV 2.0%
Citigroup, Inc. 2.0%
International Flavors & Fragrances, Inc. 2.0%
National Grid PLC 1.9%
CRH PLC 1.9%
U.S. Foods Holding Corp. 1.9%
Sector Composition
Financials 19.6%
Information technology 14.2%
Industrials 14.0%
Consumer staples 8.8%
Materials 8.7%
Health care 8.5%
Communication services 7.3%
Consumer discretionary 6.3%
Energy 5.6%
Utilities 4.0%
Real estate 1.0%
Short-term investments and other 2.0%
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. 3.1%
Taiwan Semiconductor Manufacturing Company, Ltd. 2.6%
Analog Devices, Inc. 2.1%
American Electric Power Company, Inc. 2.1%
Anheuser-Busch InBev SA/NV 2.0%
Citigroup, Inc. 2.0%
International Flavors & Fragrances, Inc. 2.0%
National Grid PLC 1.9%
CRH PLC 1.9%
U.S. Foods Holding Corp. 1.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Health Sciences Trust
(Series I/JEHSX)		 $49 0.95%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.95%
Net Assets $ 251,253,361
Holdings Count | Holding 173
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $251,253,361
Total number of portfolio holdings 173
Portfolio turnover rate 56%
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 14.3%
Johnson & Johnson 6.3%
UnitedHealth Group, Inc. 5.9%
AbbVie, Inc. 5.3%
Merck & Company, Inc. 4.2%
Gilead Sciences, Inc. 2.9%
Thermo Fisher Scientific, Inc. 2.7%
Vertex Pharmaceuticals, Inc. 2.4%
Bristol-Myers Squibb Company 2.2%
Abbott Laboratories 2.0%
Industry Composition
Biotechnology 36.3%
Pharmaceuticals 33.7%
Health care providers and services 14.9%
Health care equipment and supplies 7.7%
Life sciences tools and services 6.4%
Health care technology 0.1%
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
Eli Lilly & Company 14.3%
Johnson & Johnson 6.3%
UnitedHealth Group, Inc. 5.9%
AbbVie, Inc. 5.3%
Merck & Company, Inc. 4.2%
Gilead Sciences, Inc. 2.9%
Thermo Fisher Scientific, Inc. 2.7%
Vertex Pharmaceuticals, Inc. 2.4%
Bristol-Myers Squibb Company 2.2%
Abbott Laboratories 2.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Health Sciences Trust
(Series II/JAFKX)		 $59 1.15%
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.15%
Net Assets $ 251,253,361
Holdings Count | Holding 173
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $251,253,361
Total number of portfolio holdings 173
Portfolio turnover rate 56%
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 14.3%
Johnson & Johnson 6.3%
UnitedHealth Group, Inc. 5.9%
AbbVie, Inc. 5.3%
Merck & Company, Inc. 4.2%
Gilead Sciences, Inc. 2.9%
Thermo Fisher Scientific, Inc. 2.7%
Vertex Pharmaceuticals, Inc. 2.4%
Bristol-Myers Squibb Company 2.2%
Abbott Laboratories 2.0%
Industry Composition
Biotechnology 36.3%
Pharmaceuticals 33.7%
Health care providers and services 14.9%
Health care equipment and supplies 7.7%
Life sciences tools and services 6.4%
Health care technology 0.1%
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
Eli Lilly & Company 14.3%
Johnson & Johnson 6.3%
UnitedHealth Group, Inc. 5.9%
AbbVie, Inc. 5.3%
Merck & Company, Inc. 4.2%
Gilead Sciences, Inc. 2.9%
Thermo Fisher Scientific, Inc. 2.7%
Vertex Pharmaceuticals, Inc. 2.4%
Bristol-Myers Squibb Company 2.2%
Abbott Laboratories 2.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Health Sciences Trust
(Series NAV/JAFMX)		 $46 0.90%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.90%
Net Assets $ 251,253,361
Holdings Count | Holding 173
Investment Company Portfolio Turnover 56.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $251,253,361
Total number of portfolio holdings 173
Portfolio turnover rate 56%
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 14.3%
Johnson & Johnson 6.3%
UnitedHealth Group, Inc. 5.9%
AbbVie, Inc. 5.3%
Merck & Company, Inc. 4.2%
Gilead Sciences, Inc. 2.9%
Thermo Fisher Scientific, Inc. 2.7%
Vertex Pharmaceuticals, Inc. 2.4%
Bristol-Myers Squibb Company 2.2%
Abbott Laboratories 2.0%
Industry Composition
Biotechnology 36.3%
Pharmaceuticals 33.7%
Health care providers and services 14.9%
Health care equipment and supplies 7.7%
Life sciences tools and services 6.4%
Health care technology 0.1%
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
Eli Lilly & Company 14.3%
Johnson & Johnson 6.3%
UnitedHealth Group, Inc. 5.9%
AbbVie, Inc. 5.3%
Merck & Company, Inc. 4.2%
Gilead Sciences, Inc. 2.9%
Thermo Fisher Scientific, Inc. 2.7%
Vertex Pharmaceuticals, Inc. 2.4%
Bristol-Myers Squibb Company 2.2%
Abbott Laboratories 2.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $15 0.28%
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.28%
Net Assets $ 1,032,946,355
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,032,946,355
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-Income Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 36.0%
Industrials 11.1%
Communication services 9.7%
Consumer discretionary 9.7%
Health care 9.4%
Financials 8.6%
Consumer staples 3.3%
Energy 3.0%
Utilities 2.9%
Materials 2.8%
Real estate 0.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,032,946,355
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,032,946,355
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-Income Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 36.0%
Industrials 11.1%
Communication services 9.7%
Consumer discretionary 9.7%
Health care 9.4%
Financials 8.6%
Consumer staples 3.3%
Energy 3.0%
Utilities 2.9%
Materials 2.8%
Real estate 0.7%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $33 0.63%
Expenses Paid, Amount $ 33
Expense Ratio, Percent 0.63%
Net Assets $ 1,032,946,355
Holdings Count | Holding 1
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,032,946,355
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-Income Fund. For further details, please visit the American Funds website at americanfunds.com/afis.
Sector Composition
Information technology 36.0%
Industrials 11.1%
Communication services 9.7%
Consumer discretionary 9.7%
Health care 9.4%
Financials 8.6%
Consumer staples 3.3%
Energy 3.0%
Utilities 2.9%
Materials 2.8%
Real estate 0.7%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $24 0.45%
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.45%
Net Assets $ 1,301,123,759
Holdings Count | Holding 402
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,301,123,759
Total number of portfolio holdings 402
Portfolio turnover rate 9%
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
Twilio, Inc., Class A 0.8%
Carpenter Technology Corp. 0.8%
MKS, Inc. 0.8%
Curtiss-Wright Corp. 0.7%
nVent Electric PLC 0.7%
Entegris, Inc. 0.7%
ATI, Inc. 0.7%
Illumina, Inc. 0.7%
TechnipFMC PLC 0.7%
Sterling Infrastructure, Inc. 0.7%
Sector Composition
Industrials 25.4%
Information technology 15.0%
Financials 14.1%
Consumer discretionary 10.0%
Health care 8.4%
Real estate 6.4%
Materials 5.6%
Energy 4.2%
Consumer staples 3.1%
Utilities 3.0%
Communication services 1.4%
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
Twilio, Inc., Class A 0.8%
Carpenter Technology Corp. 0.8%
MKS, Inc. 0.8%
Curtiss-Wright Corp. 0.7%
nVent Electric PLC 0.7%
Entegris, Inc. 0.7%
ATI, Inc. 0.7%
Illumina, Inc. 0.7%
TechnipFMC PLC 0.7%
Sterling Infrastructure, Inc. 0.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $35 0.65%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.65%
Net Assets $ 1,301,123,759
Holdings Count | Holding 402
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,301,123,759
Total number of portfolio holdings 402
Portfolio turnover rate 9%
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
Twilio, Inc., Class A 0.8%
Carpenter Technology Corp. 0.8%
MKS, Inc. 0.8%
Curtiss-Wright Corp. 0.7%
nVent Electric PLC 0.7%
Entegris, Inc. 0.7%
ATI, Inc. 0.7%
Illumina, Inc. 0.7%
TechnipFMC PLC 0.7%
Sterling Infrastructure, Inc. 0.7%
Sector Composition
Industrials 25.4%
Information technology 15.0%
Financials 14.1%
Consumer discretionary 10.0%
Health care 8.4%
Real estate 6.4%
Materials 5.6%
Energy 4.2%
Consumer staples 3.1%
Utilities 3.0%
Communication services 1.4%
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
Twilio, Inc., Class A 0.8%
Carpenter Technology Corp. 0.8%
MKS, Inc. 0.8%
Curtiss-Wright Corp. 0.7%
nVent Electric PLC 0.7%
Entegris, Inc. 0.7%
ATI, Inc. 0.7%
Illumina, Inc. 0.7%
TechnipFMC PLC 0.7%
Sterling Infrastructure, Inc. 0.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $22 0.40%
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.40%
Net Assets $ 1,301,123,759
Holdings Count | Holding 402
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,301,123,759
Total number of portfolio holdings 402
Portfolio turnover rate 9%
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
Twilio, Inc., Class A 0.8%
Carpenter Technology Corp. 0.8%
MKS, Inc. 0.8%
Curtiss-Wright Corp. 0.7%
nVent Electric PLC 0.7%
Entegris, Inc. 0.7%
ATI, Inc. 0.7%
Illumina, Inc. 0.7%
TechnipFMC PLC 0.7%
Sterling Infrastructure, Inc. 0.7%
Sector Composition
Industrials 25.4%
Information technology 15.0%
Financials 14.1%
Consumer discretionary 10.0%
Health care 8.4%
Real estate 6.4%
Materials 5.6%
Energy 4.2%
Consumer staples 3.1%
Utilities 3.0%
Communication services 1.4%
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
Twilio, Inc., Class A 0.8%
Carpenter Technology Corp. 0.8%
MKS, Inc. 0.8%
Curtiss-Wright Corp. 0.7%
nVent Electric PLC 0.7%
Entegris, Inc. 0.7%
ATI, Inc. 0.7%
Illumina, Inc. 0.7%
TechnipFMC PLC 0.7%
Sterling Infrastructure, Inc. 0.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $47 0.87%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.87%
Net Assets $ 872,221,696
Holdings Count | Holding 69
Investment Company Portfolio Turnover 83.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $872,221,696
Total number of portfolio holdings 69
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
Cloudflare, Inc., Class A 4.3%
Natera, Inc. 4.2%
Datadog, Inc., Class A 4.1%
Corning, Inc. 4.0%
Flex, Ltd. 3.2%
Carpenter Technology Corp. 3.2%
Axon Enterprise, Inc. 2.8%
Comfort Systems USA, Inc. 2.6%
Sandisk Corp. 2.6%
Reddit, Inc., Class A 2.3%
Sector Composition
Information technology 31.3%
Industrials 17.8%
Consumer discretionary 16.0%
Health care 10.7%
Financials 9.5%
Communication services 8.0%
Energy 2.5%
Utilities 1.8%
Materials 0.9%
Consumer staples 0.5%
Short-term investments and other 1.0%
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
Cloudflare, Inc., Class A 4.3%
Natera, Inc. 4.2%
Datadog, Inc., Class A 4.1%
Corning, Inc. 4.0%
Flex, Ltd. 3.2%
Carpenter Technology Corp. 3.2%
Axon Enterprise, Inc. 2.8%
Comfort Systems USA, Inc. 2.6%
Sandisk Corp. 2.6%
Reddit, 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $61 1.12%
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.12%
Net Assets $ 872,221,696
Holdings Count | Holding 69
Investment Company Portfolio Turnover 83.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $872,221,696
Total number of portfolio holdings 69
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
Cloudflare, Inc., Class A 4.3%
Natera, Inc. 4.2%
Datadog, Inc., Class A 4.1%
Corning, Inc. 4.0%
Flex, Ltd. 3.2%
Carpenter Technology Corp. 3.2%
Axon Enterprise, Inc. 2.8%
Comfort Systems USA, Inc. 2.6%
Sandisk Corp. 2.6%
Reddit, Inc., Class A 2.3%
Sector Composition
Information technology 31.3%
Industrials 17.8%
Consumer discretionary 16.0%
Health care 10.7%
Financials 9.5%
Communication services 8.0%
Energy 2.5%
Utilities 1.8%
Materials 0.9%
Consumer staples 0.5%
Short-term investments and other 1.0%
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
Cloudflare, Inc., Class A 4.3%
Natera, Inc. 4.2%
Datadog, Inc., Class A 4.1%
Corning, Inc. 4.0%
Flex, Ltd. 3.2%
Carpenter Technology Corp. 3.2%
Axon Enterprise, Inc. 2.8%
Comfort Systems USA, Inc. 2.6%
Sandisk Corp. 2.6%
Reddit, Inc., Class A 2.3%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $50 0.92%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.92%
Net Assets $ 872,221,696
Holdings Count | Holding 69
Investment Company Portfolio Turnover 83.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $872,221,696
Total number of portfolio holdings 69
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
Cloudflare, Inc., Class A 4.3%
Natera, Inc. 4.2%
Datadog, Inc., Class A 4.1%
Corning, Inc. 4.0%
Flex, Ltd. 3.2%
Carpenter Technology Corp. 3.2%
Axon Enterprise, Inc. 2.8%
Comfort Systems USA, Inc. 2.6%
Sandisk Corp. 2.6%
Reddit, Inc., Class A 2.3%
Sector Composition
Information technology 31.3%
Industrials 17.8%
Consumer discretionary 16.0%
Health care 10.7%
Financials 9.5%
Communication services 8.0%
Energy 2.5%
Utilities 1.8%
Materials 0.9%
Consumer staples 0.5%
Short-term investments and other 1.0%
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
Cloudflare, Inc., Class A 4.3%
Natera, Inc. 4.2%
Datadog, Inc., Class A 4.1%
Corning, Inc. 4.0%
Flex, Ltd. 3.2%
Carpenter Technology Corp. 3.2%
Axon Enterprise, Inc. 2.8%
Comfort Systems USA, Inc. 2.6%
Sandisk Corp. 2.6%
Reddit, 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Value Trust
(Series I/JEMUX)		 $49 0.90%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.90%
Net Assets $ 765,814,242
Holdings Count | Holding 128
Investment Company Portfolio Turnover 33.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $765,814,242
Total number of portfolio holdings 128
Portfolio turnover rate 33%
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
Advance Auto Parts, Inc. 1.7%
The Middleby Corp. 1.6%
StandardAero, Inc. 1.6%
Fortive Corp. 1.5%
Hexcel Corp. 1.5%
Corpay, Inc. 1.4%
Voya Financial, Inc. 1.4%
Concentra Group Holdings Parent, Inc. 1.3%
Sensata Technologies Holding PLC 1.3%
MKS, Inc. 1.3%
Sector Composition
Industrials 19.7%
Financials 17.6%
Information technology 14.2%
Real estate 8.0%
Energy 7.6%
Consumer discretionary 7.4%
Health care 7.4%
Utilities 6.8%
Materials 4.2%
Consumer staples 3.4%
Short-term investments and other 3.7%
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
Advance Auto Parts, Inc. 1.7%
The Middleby Corp. 1.6%
StandardAero, Inc. 1.6%
Fortive Corp. 1.5%
Hexcel Corp. 1.5%
Corpay, Inc. 1.4%
Voya Financial, Inc. 1.4%
Concentra Group Holdings Parent, Inc. 1.3%
Sensata Technologies Holding PLC 1.3%
MKS, Inc. 1.3%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Value Trust
(Series II/JAGYX)		 $60 1.10%
Expenses Paid, Amount $ 60
Expense Ratio, Percent 1.10%
Net Assets $ 765,814,242
Holdings Count | Holding 128
Investment Company Portfolio Turnover 33.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $765,814,242
Total number of portfolio holdings 128
Portfolio turnover rate 33%
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
Advance Auto Parts, Inc. 1.7%
The Middleby Corp. 1.6%
StandardAero, Inc. 1.6%
Fortive Corp. 1.5%
Hexcel Corp. 1.5%
Corpay, Inc. 1.4%
Voya Financial, Inc. 1.4%
Concentra Group Holdings Parent, Inc. 1.3%
Sensata Technologies Holding PLC 1.3%
MKS, Inc. 1.3%
Sector Composition
Industrials 19.7%
Financials 17.6%
Information technology 14.2%
Real estate 8.0%
Energy 7.6%
Consumer discretionary 7.4%
Health care 7.4%
Utilities 6.8%
Materials 4.2%
Consumer staples 3.4%
Short-term investments and other 3.7%
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
Advance Auto Parts, Inc. 1.7%
The Middleby Corp. 1.6%
StandardAero, Inc. 1.6%
Fortive Corp. 1.5%
Hexcel Corp. 1.5%
Corpay, Inc. 1.4%
Voya Financial, Inc. 1.4%
Concentra Group Holdings Parent, Inc. 1.3%
Sensata Technologies Holding PLC 1.3%
MKS, Inc. 1.3%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Mid Value Trust
(Series NAV/JAGWX)		 $46 0.85%
Expenses Paid, Amount $ 46
Expense Ratio, Percent 0.85%
Net Assets $ 765,814,242
Holdings Count | Holding 128
Investment Company Portfolio Turnover 33.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $765,814,242
Total number of portfolio holdings 128
Portfolio turnover rate 33%
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
Advance Auto Parts, Inc. 1.7%
The Middleby Corp. 1.6%
StandardAero, Inc. 1.6%
Fortive Corp. 1.5%
Hexcel Corp. 1.5%
Corpay, Inc. 1.4%
Voya Financial, Inc. 1.4%
Concentra Group Holdings Parent, Inc. 1.3%
Sensata Technologies Holding PLC 1.3%
MKS, Inc. 1.3%
Sector Composition
Industrials 19.7%
Financials 17.6%
Information technology 14.2%
Real estate 8.0%
Energy 7.6%
Consumer discretionary 7.4%
Health care 7.4%
Utilities 6.8%
Materials 4.2%
Consumer staples 3.4%
Short-term investments and other 3.7%
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
Advance Auto Parts, Inc. 1.7%
The Middleby Corp. 1.6%
StandardAero, Inc. 1.6%
Fortive Corp. 1.5%
Hexcel Corp. 1.5%
Corpay, Inc. 1.4%
Voya Financial, Inc. 1.4%
Concentra Group Holdings Parent, Inc. 1.3%
Sensata Technologies Holding PLC 1.3%
MKS, Inc. 1.3%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 2,433,363,048
Holdings Count | Holding 50
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,433,363,048
Total number of portfolio holdings 50
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
Amazon.com, Inc. 7.9%
Alphabet, Inc., Class A 6.6%
Microsoft Corp. 6.5%
Taiwan Semiconductor Manufacturing Company, Ltd., ADR 4.9%
NVIDIA Corp. 4.3%
KKR & Company, Inc. 3.4%
Broadcom, Inc. 3.1%
Meta Platforms, Inc., Class A 3.0%
Lennar Corp., Class A 3.0%
Liberty Media Corp.-Liberty Formula One, Series C 2.9%
Sector Composition
Information technology 28.3%
Consumer discretionary 17.8%
Communication services 15.6%
Health care 13.2%
Financials 7.7%
Industrials 7.1%
Real estate 3.1%
Energy 2.4%
Materials 1.9%
Consumer staples 1.3%
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
Amazon.com, Inc. 7.9%
Alphabet, Inc., Class A 6.6%
Microsoft Corp. 6.5%
Taiwan Semiconductor Manufacturing Company, Ltd., ADR 4.9%
NVIDIA Corp. 4.3%
KKR & Company, Inc. 3.4%
Broadcom, Inc. 3.1%
Meta Platforms, Inc., Class A 3.0%
Lennar Corp., Class A 3.0%
Liberty Media Corp.-Liberty Formula One, Series C 2.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 2,433,363,048
Holdings Count | Holding 50
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,433,363,048
Total number of portfolio holdings 50
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
Amazon.com, Inc. 7.9%
Alphabet, Inc., Class A 6.6%
Microsoft Corp. 6.5%
Taiwan Semiconductor Manufacturing Company, Ltd., ADR 4.9%
NVIDIA Corp. 4.3%
KKR & Company, Inc. 3.4%
Broadcom, Inc. 3.1%
Meta Platforms, Inc., Class A 3.0%
Lennar Corp., Class A 3.0%
Liberty Media Corp.-Liberty Formula One, Series C 2.9%
Sector Composition
Information technology 28.3%
Consumer discretionary 17.8%
Communication services 15.6%
Health care 13.2%
Financials 7.7%
Industrials 7.1%
Real estate 3.1%
Energy 2.4%
Materials 1.9%
Consumer staples 1.3%
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
Amazon.com, Inc. 7.9%
Alphabet, Inc., Class A 6.6%
Microsoft Corp. 6.5%
Taiwan Semiconductor Manufacturing Company, Ltd., ADR 4.9%
NVIDIA Corp. 4.3%
KKR & Company, Inc. 3.4%
Broadcom, Inc. 3.1%
Meta Platforms, Inc., Class A 3.0%
Lennar Corp., Class A 3.0%
Liberty Media Corp.-Liberty Formula One, Series C 2.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 2,433,363,048
Holdings Count | Holding 50
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $2,433,363,048
Total number of portfolio holdings 50
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
Amazon.com, Inc. 7.9%
Alphabet, Inc., Class A 6.6%
Microsoft Corp. 6.5%
Taiwan Semiconductor Manufacturing Company, Ltd., ADR 4.9%
NVIDIA Corp. 4.3%
KKR & Company, Inc. 3.4%
Broadcom, Inc. 3.1%
Meta Platforms, Inc., Class A 3.0%
Lennar Corp., Class A 3.0%
Liberty Media Corp.-Liberty Formula One, Series C 2.9%
Sector Composition
Information technology 28.3%
Consumer discretionary 17.8%
Communication services 15.6%
Health care 13.2%
Financials 7.7%
Industrials 7.1%
Real estate 3.1%
Energy 2.4%
Materials 1.9%
Consumer staples 1.3%
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
Amazon.com, Inc. 7.9%
Alphabet, Inc., Class A 6.6%
Microsoft Corp. 6.5%
Taiwan Semiconductor Manufacturing Company, Ltd., ADR 4.9%
NVIDIA Corp. 4.3%
KKR & Company, Inc. 3.4%
Broadcom, Inc. 3.1%
Meta Platforms, Inc., Class A 3.0%
Lennar Corp., Class A 3.0%
Liberty Media Corp.-Liberty Formula One, Series C 2.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $21 0.40%
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.40%
Net Assets $ 1,365,944,033
Holdings Count | Holding 1,920
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,365,944,033
Total number of portfolio holdings 1,920
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
Taiwan Semiconductor Manufacturing Company, Ltd. 5.2%
Samsung Electronics Company, Ltd. 2.8%
SK Hynix, Inc. 2.6%
ASML Holding NV 2.1%
Tencent Holdings, Ltd. 0.9%
HSBC Holdings PLC 0.9%
Roche Holding AG 0.8%
Novartis AG 0.8%
Royal Bank of Canada 0.8%
AstraZeneca PLC 0.8%
Sector Composition
Financials 23.4%
Information technology 23.0%
Industrials 14.0%
Consumer discretionary 7.4%
Health care 6.7%
Materials 6.3%
Consumer staples 5.1%
Energy 4.2%
Communication services 4.2%
Utilities 3.0%
Real estate 1.2%
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
Taiwan Semiconductor Manufacturing Company, Ltd. 5.2%
Samsung Electronics Company, Ltd. 2.8%
SK Hynix, Inc. 2.6%
ASML Holding NV 2.1%
Tencent Holdings, Ltd. 0.9%
HSBC Holdings PLC 0.9%
Roche Holding AG 0.8%
Novartis AG 0.8%
Royal Bank of Canada 0.8%
AstraZeneca PLC 0.8%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $32 0.60%
Expenses Paid, Amount $ 32
Expense Ratio, Percent 0.60%
Net Assets $ 1,365,944,033
Holdings Count | Holding 1,920
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,365,944,033
Total number of portfolio holdings 1,920
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
Taiwan Semiconductor Manufacturing Company, Ltd. 5.2%
Samsung Electronics Company, Ltd. 2.8%
SK Hynix, Inc. 2.6%
ASML Holding NV 2.1%
Tencent Holdings, Ltd. 0.9%
HSBC Holdings PLC 0.9%
Roche Holding AG 0.8%
Novartis AG 0.8%
Royal Bank of Canada 0.8%
AstraZeneca PLC 0.8%
Sector Composition
Financials 23.4%
Information technology 23.0%
Industrials 14.0%
Consumer discretionary 7.4%
Health care 6.7%
Materials 6.3%
Consumer staples 5.1%
Energy 4.2%
Communication services 4.2%
Utilities 3.0%
Real estate 1.2%
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
Taiwan Semiconductor Manufacturing Company, Ltd. 5.2%
Samsung Electronics Company, Ltd. 2.8%
SK Hynix, Inc. 2.6%
ASML Holding NV 2.1%
Tencent Holdings, Ltd. 0.9%
HSBC Holdings PLC 0.9%
Roche Holding AG 0.8%
Novartis AG 0.8%
Royal Bank of Canada 0.8%
AstraZeneca PLC 0.8%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,365,944,033
Holdings Count | Holding 1,920
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,365,944,033
Total number of portfolio holdings 1,920
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
Taiwan Semiconductor Manufacturing Company, Ltd. 5.2%
Samsung Electronics Company, Ltd. 2.8%
SK Hynix, Inc. 2.6%
ASML Holding NV 2.1%
Tencent Holdings, Ltd. 0.9%
HSBC Holdings PLC 0.9%
Roche Holding AG 0.8%
Novartis AG 0.8%
Royal Bank of Canada 0.8%
AstraZeneca PLC 0.8%
Sector Composition
Financials 23.4%
Information technology 23.0%
Industrials 14.0%
Consumer discretionary 7.4%
Health care 6.7%
Materials 6.3%
Consumer staples 5.1%
Energy 4.2%
Communication services 4.2%
Utilities 3.0%
Real estate 1.2%
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
Taiwan Semiconductor Manufacturing Company, Ltd. 5.2%
Samsung Electronics Company, Ltd. 2.8%
SK Hynix, Inc. 2.6%
ASML Holding NV 2.1%
Tencent Holdings, Ltd. 0.9%
HSBC Holdings PLC 0.9%
Roche Holding AG 0.8%
Novartis AG 0.8%
Royal Bank of Canada 0.8%
AstraZeneca PLC 0.8%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $49 0.96%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.96%
Net Assets $ 118,006,111
Holdings Count | Holding 2,871
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $118,006,111
Total number of portfolio holdings 2,871
Portfolio turnover rate 11%
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
BAWAG Group AG 0.5%
Swiss Prime Site AG 0.5%
Rexel SA 0.4%
Belimo Holding AG 0.4%
Orion OYJ, Class B 0.4%
Qiagen NV (New York Stock Exchange) 0.3%
Accelleron Industries AG 0.3%
IG Group Holdings PLC 0.3%
PSP Swiss Property AG 0.3%
SPIE SA 0.3%
Sector Composition
Industrials 24.0%
Materials 13.5%
Financials 13.4%
Consumer discretionary 12.0%
Information technology 7.7%
Consumer staples 6.0%
Health care 5.7%
Energy 5.2%
Real estate 4.2%
Communication services 3.3%
Utilities 3.3%
Short-term investments and other 1.7%
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
BAWAG Group AG 0.5%
Swiss Prime Site AG 0.5%
Rexel SA 0.4%
Belimo Holding AG 0.4%
Orion OYJ, Class B 0.4%
Qiagen NV (New York Stock Exchange) 0.3%
Accelleron Industries AG 0.3%
IG Group Holdings PLC 0.3%
PSP Swiss Property AG 0.3%
SPIE SA 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $62 1.21%
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.21%
Net Assets $ 118,006,111
Holdings Count | Holding 2,871
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $118,006,111
Total number of portfolio holdings 2,871
Portfolio turnover rate 11%
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
BAWAG Group AG 0.5%
Swiss Prime Site AG 0.5%
Rexel SA 0.4%
Belimo Holding AG 0.4%
Orion OYJ, Class B 0.4%
Qiagen NV (New York Stock Exchange) 0.3%
Accelleron Industries AG 0.3%
IG Group Holdings PLC 0.3%
PSP Swiss Property AG 0.3%
SPIE SA 0.3%
Sector Composition
Industrials 24.0%
Materials 13.5%
Financials 13.4%
Consumer discretionary 12.0%
Information technology 7.7%
Consumer staples 6.0%
Health care 5.7%
Energy 5.2%
Real estate 4.2%
Communication services 3.3%
Utilities 3.3%
Short-term investments and other 1.7%
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
BAWAG Group AG 0.5%
Swiss Prime Site AG 0.5%
Rexel SA 0.4%
Belimo Holding AG 0.4%
Orion OYJ, Class B 0.4%
Qiagen NV (New York Stock Exchange) 0.3%
Accelleron Industries AG 0.3%
IG Group Holdings PLC 0.3%
PSP Swiss Property AG 0.3%
SPIE SA 0.3%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $51 1.01%
Expenses Paid, Amount $ 51
Expense Ratio, Percent 1.01%
Net Assets $ 118,006,111
Holdings Count | Holding 2,871
Investment Company Portfolio Turnover 11.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $118,006,111
Total number of portfolio holdings 2,871
Portfolio turnover rate 11%
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
BAWAG Group AG 0.5%
Swiss Prime Site AG 0.5%
Rexel SA 0.4%
Belimo Holding AG 0.4%
Orion OYJ, Class B 0.4%
Qiagen NV (New York Stock Exchange) 0.3%
Accelleron Industries AG 0.3%
IG Group Holdings PLC 0.3%
PSP Swiss Property AG 0.3%
SPIE SA 0.3%
Sector Composition
Industrials 24.0%
Materials 13.5%
Financials 13.4%
Consumer discretionary 12.0%
Information technology 7.7%
Consumer staples 6.0%
Health care 5.7%
Energy 5.2%
Real estate 4.2%
Communication services 3.3%
Utilities 3.3%
Short-term investments and other 1.7%
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
BAWAG Group AG 0.5%
Swiss Prime Site AG 0.5%
Rexel SA 0.4%
Belimo Holding AG 0.4%
Orion OYJ, Class B 0.4%
Qiagen NV (New York Stock Exchange) 0.3%
Accelleron Industries AG 0.3%
IG Group Holdings PLC 0.3%
PSP Swiss Property AG 0.3%
SPIE SA 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $42 0.81%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.81%
Net Assets $ 777,935,255
Holdings Count | Holding 92
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $777,935,255
Total number of portfolio holdings 92
Portfolio turnover rate 40%
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
ABN AMRO Bank NV 2.8%
Danske Bank A/S 2.5%
Samsung Electronics Company, Ltd. 2.5%
Galp Energia SGPS SA 2.4%
Euronext NV 2.3%
Roche Holding AG 2.2%
AstraZeneca PLC 2.1%
Cie Generale des Etablissements Michelin SCA 2.1%
TOTO, Ltd. 1.9%
Shell PLC 1.9%
Sector Composition
Financials 24.2%
Industrials 15.6%
Health care 15.1%
Materials 9.8%
Consumer discretionary 7.7%
Energy 7.3%
Consumer staples 6.8%
Information technology 5.5%
Communication services 5.1%
Utilities 2.8%
Short-term investments and other 0.1%
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
ABN AMRO Bank NV 2.8%
Danske Bank A/S 2.5%
Samsung Electronics Company, Ltd. 2.5%
Galp Energia SGPS SA 2.4%
Euronext NV 2.3%
Roche Holding AG 2.2%
AstraZeneca PLC 2.1%
Cie Generale des Etablissements Michelin SCA 2.1%
TOTO, Ltd. 1.9%
Shell PLC 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $53 1.01%
Expenses Paid, Amount $ 53
Expense Ratio, Percent 1.01%
Net Assets $ 777,935,255
Holdings Count | Holding 92
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $777,935,255
Total number of portfolio holdings 92
Portfolio turnover rate 40%
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
ABN AMRO Bank NV 2.8%
Danske Bank A/S 2.5%
Samsung Electronics Company, Ltd. 2.5%
Galp Energia SGPS SA 2.4%
Euronext NV 2.3%
Roche Holding AG 2.2%
AstraZeneca PLC 2.1%
Cie Generale des Etablissements Michelin SCA 2.1%
TOTO, Ltd. 1.9%
Shell PLC 1.9%
Sector Composition
Financials 24.2%
Industrials 15.6%
Health care 15.1%
Materials 9.8%
Consumer discretionary 7.7%
Energy 7.3%
Consumer staples 6.8%
Information technology 5.5%
Communication services 5.1%
Utilities 2.8%
Short-term investments and other 0.1%
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
ABN AMRO Bank NV 2.8%
Danske Bank A/S 2.5%
Samsung Electronics Company, Ltd. 2.5%
Galp Energia SGPS SA 2.4%
Euronext NV 2.3%
Roche Holding AG 2.2%
AstraZeneca PLC 2.1%
Cie Generale des Etablissements Michelin SCA 2.1%
TOTO, Ltd. 1.9%
Shell PLC 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $40 0.76%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.76%
Net Assets $ 777,935,255
Holdings Count | Holding 92
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $777,935,255
Total number of portfolio holdings 92
Portfolio turnover rate 40%
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
ABN AMRO Bank NV 2.8%
Danske Bank A/S 2.5%
Samsung Electronics Company, Ltd. 2.5%
Galp Energia SGPS SA 2.4%
Euronext NV 2.3%
Roche Holding AG 2.2%
AstraZeneca PLC 2.1%
Cie Generale des Etablissements Michelin SCA 2.1%
TOTO, Ltd. 1.9%
Shell PLC 1.9%
Sector Composition
Financials 24.2%
Industrials 15.6%
Health care 15.1%
Materials 9.8%
Consumer discretionary 7.7%
Energy 7.3%
Consumer staples 6.8%
Information technology 5.5%
Communication services 5.1%
Utilities 2.8%
Short-term investments and other 0.1%
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
ABN AMRO Bank NV 2.8%
Danske Bank A/S 2.5%
Samsung Electronics Company, Ltd. 2.5%
Galp Energia SGPS SA 2.4%
Euronext NV 2.3%
Roche Holding AG 2.2%
AstraZeneca PLC 2.1%
Cie Generale des Etablissements Michelin SCA 2.1%
TOTO, Ltd. 1.9%
Shell PLC 1.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $26 0.47%
Expenses Paid, Amount $ 26
Expense Ratio, Percent 0.47%
Net Assets $ 667,808,751
Holdings Count | Holding 1,829
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $667,808,751
Total number of portfolio holdings 1,829
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
Moog, Inc., Class A 0.4%
Hut 8 Corp. 0.4%
Viasat, Inc. 0.4%
BrightSpring Health Services, Inc. 0.3%
Cytokinetics, Inc. 0.3%
MaxLinear, Inc. 0.3%
Argan, Inc. 0.3%
UMB Financial Corp. 0.3%
JFrog, Ltd. 0.3%
Riot Platforms, Inc. 0.3%
Sector Composition
Health care 19.2%
Financials 17.8%
Industrials 14.4%
Information technology 13.8%
Consumer discretionary 9.1%
Real estate 5.5%
Energy 5.5%
Materials 4.1%
Utilities 2.6%
Communication services 2.3%
Consumer staples 1.9%
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
Moog, Inc., Class A 0.4%
Hut 8 Corp. 0.4%
Viasat, Inc. 0.4%
BrightSpring Health Services, Inc. 0.3%
Cytokinetics, Inc. 0.3%
MaxLinear, Inc. 0.3%
Argan, Inc. 0.3%
UMB Financial Corp. 0.3%
JFrog, Ltd. 0.3%
Riot Platforms, 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $40 0.72%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.72%
Net Assets $ 667,808,751
Holdings Count | Holding 1,829
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $667,808,751
Total number of portfolio holdings 1,829
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
Moog, Inc., Class A 0.4%
Hut 8 Corp. 0.4%
Viasat, Inc. 0.4%
BrightSpring Health Services, Inc. 0.3%
Cytokinetics, Inc. 0.3%
MaxLinear, Inc. 0.3%
Argan, Inc. 0.3%
UMB Financial Corp. 0.3%
JFrog, Ltd. 0.3%
Riot Platforms, Inc. 0.3%
Sector Composition
Health care 19.2%
Financials 17.8%
Industrials 14.4%
Information technology 13.8%
Consumer discretionary 9.1%
Real estate 5.5%
Energy 5.5%
Materials 4.1%
Utilities 2.6%
Communication services 2.3%
Consumer staples 1.9%
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
Moog, Inc., Class A 0.4%
Hut 8 Corp. 0.4%
Viasat, Inc. 0.4%
BrightSpring Health Services, Inc. 0.3%
Cytokinetics, Inc. 0.3%
MaxLinear, Inc. 0.3%
Argan, Inc. 0.3%
UMB Financial Corp. 0.3%
JFrog, Ltd. 0.3%
Riot Platforms, Inc. 0.3%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $29 0.52%
Expenses Paid, Amount $ 29
Expense Ratio, Percent 0.52%
Net Assets $ 667,808,751
Holdings Count | Holding 1,829
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $667,808,751
Total number of portfolio holdings 1,829
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
Moog, Inc., Class A 0.4%
Hut 8 Corp. 0.4%
Viasat, Inc. 0.4%
BrightSpring Health Services, Inc. 0.3%
Cytokinetics, Inc. 0.3%
MaxLinear, Inc. 0.3%
Argan, Inc. 0.3%
UMB Financial Corp. 0.3%
JFrog, Ltd. 0.3%
Riot Platforms, Inc. 0.3%
Sector Composition
Health care 19.2%
Financials 17.8%
Industrials 14.4%
Information technology 13.8%
Consumer discretionary 9.1%
Real estate 5.5%
Energy 5.5%
Materials 4.1%
Utilities 2.6%
Communication services 2.3%
Consumer staples 1.9%
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
Moog, Inc., Class A 0.4%
Hut 8 Corp. 0.4%
Viasat, Inc. 0.4%
BrightSpring Health Services, Inc. 0.3%
Cytokinetics, Inc. 0.3%
MaxLinear, Inc. 0.3%
Argan, Inc. 0.3%
UMB Financial Corp. 0.3%
JFrog, Ltd. 0.3%
Riot Platforms, 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $47 0.86%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.86%
Net Assets $ 203,199,233
Holdings Count | Holding 1,063
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $203,199,233
Total number of portfolio holdings 1,063
Portfolio turnover rate 16%
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
Performance Food Group Company 0.7%
Toll Brothers, Inc. 0.7%
BorgWarner, Inc. 0.7%
WESCO International, Inc. 0.7%
Permian Resources Corp., Class A 0.6%
Ovintiv, Inc. 0.6%
Regal Rexnord Corp. 0.6%
CNH Industrial NV 0.6%
Corebridge Financial, Inc. 0.6%
Ball Corp. 0.5%
Sector Composition
Financials 29.0%
Industrials 17.6%
Consumer discretionary 14.2%
Energy 9.5%
Health care 7.0%
Consumer staples 6.8%
Information technology 6.3%
Materials 6.1%
Communication services 2.0%
Real estate 0.8%
Utilities 0.5%
Short-term investments and other 0.2%
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
Performance Food Group Company 0.7%
Toll Brothers, Inc. 0.7%
BorgWarner, Inc. 0.7%
WESCO International, Inc. 0.7%
Permian Resources Corp., Class A 0.6%
Ovintiv, Inc. 0.6%
Regal Rexnord Corp. 0.6%
CNH Industrial NV 0.6%
Corebridge Financial, Inc. 0.6%
Ball 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $57 1.06%
Expenses Paid, Amount $ 57
Expense Ratio, Percent 1.06%
Net Assets $ 203,199,233
Holdings Count | Holding 1,063
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $203,199,233
Total number of portfolio holdings 1,063
Portfolio turnover rate 16%
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
Performance Food Group Company 0.7%
Toll Brothers, Inc. 0.7%
BorgWarner, Inc. 0.7%
WESCO International, Inc. 0.7%
Permian Resources Corp., Class A 0.6%
Ovintiv, Inc. 0.6%
Regal Rexnord Corp. 0.6%
CNH Industrial NV 0.6%
Corebridge Financial, Inc. 0.6%
Ball Corp. 0.5%
Sector Composition
Financials 29.0%
Industrials 17.6%
Consumer discretionary 14.2%
Energy 9.5%
Health care 7.0%
Consumer staples 6.8%
Information technology 6.3%
Materials 6.1%
Communication services 2.0%
Real estate 0.8%
Utilities 0.5%
Short-term investments and other 0.2%
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
Performance Food Group Company 0.7%
Toll Brothers, Inc. 0.7%
BorgWarner, Inc. 0.7%
WESCO International, Inc. 0.7%
Permian Resources Corp., Class A 0.6%
Ovintiv, Inc. 0.6%
Regal Rexnord Corp. 0.6%
CNH Industrial NV 0.6%
Corebridge Financial, Inc. 0.6%
Ball 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $44 0.81%
Expenses Paid, Amount $ 44
Expense Ratio, Percent 0.81%
Net Assets $ 203,199,233
Holdings Count | Holding 1,063
Investment Company Portfolio Turnover 16.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $203,199,233
Total number of portfolio holdings 1,063
Portfolio turnover rate 16%
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
Performance Food Group Company 0.7%
Toll Brothers, Inc. 0.7%
BorgWarner, Inc. 0.7%
WESCO International, Inc. 0.7%
Permian Resources Corp., Class A 0.6%
Ovintiv, Inc. 0.6%
Regal Rexnord Corp. 0.6%
CNH Industrial NV 0.6%
Corebridge Financial, Inc. 0.6%
Ball Corp. 0.5%
Sector Composition
Financials 29.0%
Industrials 17.6%
Consumer discretionary 14.2%
Energy 9.5%
Health care 7.0%
Consumer staples 6.8%
Information technology 6.3%
Materials 6.1%
Communication services 2.0%
Real estate 0.8%
Utilities 0.5%
Short-term investments and other 0.2%
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
Performance Food Group Company 0.7%
Toll Brothers, Inc. 0.7%
BorgWarner, Inc. 0.7%
WESCO International, Inc. 0.7%
Permian Resources Corp., Class A 0.6%
Ovintiv, Inc. 0.6%
Regal Rexnord Corp. 0.6%
CNH Industrial NV 0.6%
Corebridge Financial, Inc. 0.6%
Ball Corp. 0.5%
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 (the fund) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $49 0.87%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.87%
Net Assets $ 357,980,686
Holdings Count | Holding 70
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $357,980,686
Total number of portfolio holdings 70
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
Tenable Holdings, Inc. 2.7%
Vicor Corp. 2.6%
Life Time Group Holdings, Inc. 2.5%
The Timken Company 2.5%
CommVault Systems, Inc. 2.1%
Advanced Energy Industries, Inc. 2.0%
Regal Rexnord Corp. 2.0%
SouthState Bank Corp. 2.0%
Veeco Instruments, Inc. 2.0%
Ambarella, Inc. 2.0%
Sector Composition
Information technology 24.5%
Industrials 20.6%
Health care 15.0%
Financials 12.7%
Consumer discretionary 11.0%
Energy 4.5%
Real estate 3.3%
Consumer staples 2.4%
Materials 1.5%
Utilities 0.9%
Short-term investments and other 3.6%
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
Tenable Holdings, Inc. 2.7%
Vicor Corp. 2.6%
Life Time Group Holdings, Inc. 2.5%
The Timken Company 2.5%
CommVault Systems, Inc. 2.1%
Advanced Energy Industries, Inc. 2.0%
Regal Rexnord Corp. 2.0%
SouthState Bank Corp. 2.0%
Veeco Instruments, Inc. 2.0%
Ambarella, Inc. 2.0%
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 (the fund) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $63 1.12%
Expenses Paid, Amount $ 63
Expense Ratio, Percent 1.12%
Net Assets $ 357,980,686
Holdings Count | Holding 70
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $357,980,686
Total number of portfolio holdings 70
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
Tenable Holdings, Inc. 2.7%
Vicor Corp. 2.6%
Life Time Group Holdings, Inc. 2.5%
The Timken Company 2.5%
CommVault Systems, Inc. 2.1%
Advanced Energy Industries, Inc. 2.0%
Regal Rexnord Corp. 2.0%
SouthState Bank Corp. 2.0%
Veeco Instruments, Inc. 2.0%
Ambarella, Inc. 2.0%
Sector Composition
Information technology 24.5%
Industrials 20.6%
Health care 15.0%
Financials 12.7%
Consumer discretionary 11.0%
Energy 4.5%
Real estate 3.3%
Consumer staples 2.4%
Materials 1.5%
Utilities 0.9%
Short-term investments and other 3.6%
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
Tenable Holdings, Inc. 2.7%
Vicor Corp. 2.6%
Life Time Group Holdings, Inc. 2.5%
The Timken Company 2.5%
CommVault Systems, Inc. 2.1%
Advanced Energy Industries, Inc. 2.0%
Regal Rexnord Corp. 2.0%
SouthState Bank Corp. 2.0%
Veeco Instruments, Inc. 2.0%
Ambarella, Inc. 2.0%
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 (the fund) for the period of January 1, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $52 0.92%
Expenses Paid, Amount $ 52
Expense Ratio, Percent 0.92%
Net Assets $ 357,980,686
Holdings Count | Holding 70
Investment Company Portfolio Turnover 36.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $357,980,686
Total number of portfolio holdings 70
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
Tenable Holdings, Inc. 2.7%
Vicor Corp. 2.6%
Life Time Group Holdings, Inc. 2.5%
The Timken Company 2.5%
CommVault Systems, Inc. 2.1%
Advanced Energy Industries, Inc. 2.0%
Regal Rexnord Corp. 2.0%
SouthState Bank Corp. 2.0%
Veeco Instruments, Inc. 2.0%
Ambarella, Inc. 2.0%
Sector Composition
Information technology 24.5%
Industrials 20.6%
Health care 15.0%
Financials 12.7%
Consumer discretionary 11.0%
Energy 4.5%
Real estate 3.3%
Consumer staples 2.4%
Materials 1.5%
Utilities 0.9%
Short-term investments and other 3.6%
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
Tenable Holdings, Inc. 2.7%
Vicor Corp. 2.6%
Life Time Group Holdings, Inc. 2.5%
The Timken Company 2.5%
CommVault Systems, Inc. 2.1%
Advanced Energy Industries, Inc. 2.0%
Regal Rexnord Corp. 2.0%
SouthState Bank Corp. 2.0%
Veeco Instruments, Inc. 2.0%
Ambarella, Inc. 2.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $62 1.12%
Expenses Paid, Amount $ 62
Expense Ratio, Percent 1.12%
Net Assets $ 150,136,265
Holdings Count | Holding 210
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $150,136,265
Total number of portfolio holdings 210
Portfolio turnover rate 30%
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. 2.3%
Columbia Banking System, Inc. 1.8%
Curbline Properties Corp. 1.5%
PennyMac Financial Services, Inc. 1.2%
CareTrust REIT, Inc. 1.2%
Hut 8 Corp. 1.2%
Cytokinetics, Inc. 1.1%
HA Sustainable Infrastructure Capital, Inc. 1.1%
Vishay Intertechnology, Inc. 1.0%
Element Solutions, Inc. 1.0%
Sector Composition
Financials 25.8%
Industrials 13.2%
Health care 10.9%
Consumer discretionary 10.0%
Real estate 9.1%
Information technology 7.1%
Energy 6.7%
Utilities 5.2%
Materials 4.8%
Communication services 2.4%
Consumer staples 1.9%
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
Pinnacle Financial Partners, Inc. 2.3%
Columbia Banking System, Inc. 1.8%
Curbline Properties Corp. 1.5%
PennyMac Financial Services, Inc. 1.2%
CareTrust REIT, Inc. 1.2%
Hut 8 Corp. 1.2%
Cytokinetics, Inc. 1.1%
HA Sustainable Infrastructure Capital, Inc. 1.1%
Vishay Intertechnology, Inc. 1.0%
Element Solutions, Inc. 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $73 1.32%
Expenses Paid, Amount $ 73
Expense Ratio, Percent 1.32%
Net Assets $ 150,136,265
Holdings Count | Holding 210
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $150,136,265
Total number of portfolio holdings 210
Portfolio turnover rate 30%
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. 2.3%
Columbia Banking System, Inc. 1.8%
Curbline Properties Corp. 1.5%
PennyMac Financial Services, Inc. 1.2%
CareTrust REIT, Inc. 1.2%
Hut 8 Corp. 1.2%
Cytokinetics, Inc. 1.1%
HA Sustainable Infrastructure Capital, Inc. 1.1%
Vishay Intertechnology, Inc. 1.0%
Element Solutions, Inc. 1.0%
Sector Composition
Financials 25.8%
Industrials 13.2%
Health care 10.9%
Consumer discretionary 10.0%
Real estate 9.1%
Information technology 7.1%
Energy 6.7%
Utilities 5.2%
Materials 4.8%
Communication services 2.4%
Consumer staples 1.9%
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
Pinnacle Financial Partners, Inc. 2.3%
Columbia Banking System, Inc. 1.8%
Curbline Properties Corp. 1.5%
PennyMac Financial Services, Inc. 1.2%
CareTrust REIT, Inc. 1.2%
Hut 8 Corp. 1.2%
Cytokinetics, Inc. 1.1%
HA Sustainable Infrastructure Capital, Inc. 1.1%
Vishay Intertechnology, Inc. 1.0%
Element Solutions, Inc. 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $59 1.07%
Expenses Paid, Amount $ 59
Expense Ratio, Percent 1.07%
Net Assets $ 150,136,265
Holdings Count | Holding 210
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $150,136,265
Total number of portfolio holdings 210
Portfolio turnover rate 30%
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. 2.3%
Columbia Banking System, Inc. 1.8%
Curbline Properties Corp. 1.5%
PennyMac Financial Services, Inc. 1.2%
CareTrust REIT, Inc. 1.2%
Hut 8 Corp. 1.2%
Cytokinetics, Inc. 1.1%
HA Sustainable Infrastructure Capital, Inc. 1.1%
Vishay Intertechnology, Inc. 1.0%
Element Solutions, Inc. 1.0%
Sector Composition
Financials 25.8%
Industrials 13.2%
Health care 10.9%
Consumer discretionary 10.0%
Real estate 9.1%
Information technology 7.1%
Energy 6.7%
Utilities 5.2%
Materials 4.8%
Communication services 2.4%
Consumer staples 1.9%
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
Pinnacle Financial Partners, Inc. 2.3%
Columbia Banking System, Inc. 1.8%
Curbline Properties Corp. 1.5%
PennyMac Financial Services, Inc. 1.2%
CareTrust REIT, Inc. 1.2%
Hut 8 Corp. 1.2%
Cytokinetics, Inc. 1.1%
HA Sustainable Infrastructure Capital, Inc. 1.1%
Vishay Intertechnology, Inc. 1.0%
Element Solutions, Inc. 1.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $36 0.71%
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.71%
Net Assets $ 824,834,195
Holdings Count | Holding 62
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $824,834,195
Total number of portfolio holdings 62
Portfolio turnover rate 9%
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. 4.7%
Alphabet, Inc., Class A 4.4%
Elevance Health, Inc. 4.0%
Elanco Animal Health, Inc. 3.7%
United Rentals, Inc. 3.4%
Nasdaq, Inc. 3.1%
Microsoft Corp. 3.0%
Lennar Corp., Class A 2.8%
GSK PLC, ADR 2.8%
KKR & Company, Inc. 2.7%
Sector Composition
Health care 18.0%
Financials 15.4%
Information technology 13.4%
Industrials 12.4%
Consumer discretionary 10.3%
Communication services 8.6%
Energy 7.4%
Consumer staples 6.6%
Real estate 2.5%
Materials 0.6%
Short-term investments and other 4.8%
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
Cheniere Energy, Inc. 4.7%
Alphabet, Inc., Class A 4.4%
Elevance Health, Inc. 4.0%
Elanco Animal Health, Inc. 3.7%
United Rentals, Inc. 3.4%
Nasdaq, Inc. 3.1%
Microsoft Corp. 3.0%
Lennar Corp., Class A 2.8%
GSK PLC, ADR 2.8%
KKR & Company, Inc. 2.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $49 0.96%
Expenses Paid, Amount $ 49
Expense Ratio, Percent 0.96%
Net Assets $ 824,834,195
Holdings Count | Holding 62
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $824,834,195
Total number of portfolio holdings 62
Portfolio turnover rate 9%
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. 4.7%
Alphabet, Inc., Class A 4.4%
Elevance Health, Inc. 4.0%
Elanco Animal Health, Inc. 3.7%
United Rentals, Inc. 3.4%
Nasdaq, Inc. 3.1%
Microsoft Corp. 3.0%
Lennar Corp., Class A 2.8%
GSK PLC, ADR 2.8%
KKR & Company, Inc. 2.7%
Sector Composition
Health care 18.0%
Financials 15.4%
Information technology 13.4%
Industrials 12.4%
Consumer discretionary 10.3%
Communication services 8.6%
Energy 7.4%
Consumer staples 6.6%
Real estate 2.5%
Materials 0.6%
Short-term investments and other 4.8%
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
Cheniere Energy, Inc. 4.7%
Alphabet, Inc., Class A 4.4%
Elevance Health, Inc. 4.0%
Elanco Animal Health, Inc. 3.7%
United Rentals, Inc. 3.4%
Nasdaq, Inc. 3.1%
Microsoft Corp. 3.0%
Lennar Corp., Class A 2.8%
GSK PLC, ADR 2.8%
KKR & Company, Inc. 2.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 0.76%
Expenses Paid, Amount $ 39
Expense Ratio, Percent 0.76%
Net Assets $ 824,834,195
Holdings Count | Holding 62
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $824,834,195
Total number of portfolio holdings 62
Portfolio turnover rate 9%
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. 4.7%
Alphabet, Inc., Class A 4.4%
Elevance Health, Inc. 4.0%
Elanco Animal Health, Inc. 3.7%
United Rentals, Inc. 3.4%
Nasdaq, Inc. 3.1%
Microsoft Corp. 3.0%
Lennar Corp., Class A 2.8%
GSK PLC, ADR 2.8%
KKR & Company, Inc. 2.7%
Sector Composition
Health care 18.0%
Financials 15.4%
Information technology 13.4%
Industrials 12.4%
Consumer discretionary 10.3%
Communication services 8.6%
Energy 7.4%
Consumer staples 6.6%
Real estate 2.5%
Materials 0.6%
Short-term investments and other 4.8%
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
Cheniere Energy, Inc. 4.7%
Alphabet, Inc., Class A 4.4%
Elevance Health, Inc. 4.0%
Elanco Animal Health, Inc. 3.7%
United Rentals, Inc. 3.4%
Nasdaq, Inc. 3.1%
Microsoft Corp. 3.0%
Lennar Corp., Class A 2.8%
GSK PLC, ADR 2.8%
KKR & Company, Inc. 2.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 0.48%
Expenses Paid, Amount $ 25
Expense Ratio, Percent 0.48%
Net Assets $ 1,209,757,476
Holdings Count | Holding 2,938
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,209,757,476
Total number of portfolio holdings 2,938
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. 6.2%
Apple, Inc. 5.4%
Microsoft Corp. 3.5%
Amazon.com, Inc. 3.3%
Alphabet, Inc., Class A 2.7%
Alphabet, Inc., Class C 2.5%
Broadcom, Inc. 2.3%
Tesla, Inc. 2.0%
Micron Technology, Inc. 1.7%
Meta Platforms, Inc., Class A 1.6%
Sector Composition
Information technology 33.6%
Financials 11.9%
Industrials 10.0%
Consumer discretionary 9.7%
Health care 9.4%
Communication services 9.0%
Consumer staples 4.7%
Energy 3.1%
Materials 2.2%
Real estate 2.1%
Utilities 2.0%
Short-term investments and other 2.3%
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. 6.2%
Apple, Inc. 5.4%
Microsoft Corp. 3.5%
Amazon.com, Inc. 3.3%
Alphabet, Inc., Class A 2.7%
Alphabet, Inc., Class C 2.5%
Broadcom, Inc. 2.3%
Tesla, Inc. 2.0%
Micron Technology, Inc. 1.7%
Meta Platforms, Inc., Class A 1.6%
C000022761 [Member]  
Shareholder Report [Line Items]  
Fund Name Total Stock Market Index Trust
Class Name Series II
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 0.68%
Expenses Paid, Amount $ 35
Expense Ratio, Percent 0.68%
Net Assets $ 1,209,757,476
Holdings Count | Holding 2,938
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,209,757,476
Total number of portfolio holdings 2,938
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. 6.2%
Apple, Inc. 5.4%
Microsoft Corp. 3.5%
Amazon.com, Inc. 3.3%
Alphabet, Inc., Class A 2.7%
Alphabet, Inc., Class C 2.5%
Broadcom, Inc. 2.3%
Tesla, Inc. 2.0%
Micron Technology, Inc. 1.7%
Meta Platforms, Inc., Class A 1.6%
Sector Composition
Information technology 33.6%
Financials 11.9%
Industrials 10.0%
Consumer discretionary 9.7%
Health care 9.4%
Communication services 9.0%
Consumer staples 4.7%
Energy 3.1%
Materials 2.2%
Real estate 2.1%
Utilities 2.0%
Short-term investments and other 2.3%
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. 6.2%
Apple, Inc. 5.4%
Microsoft Corp. 3.5%
Amazon.com, Inc. 3.3%
Alphabet, Inc., Class A 2.7%
Alphabet, Inc., Class C 2.5%
Broadcom, Inc. 2.3%
Tesla, Inc. 2.0%
Micron Technology, Inc. 1.7%
Meta Platforms, Inc., Class A 1.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 0.43%
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.43%
Net Assets $ 1,209,757,476
Holdings Count | Holding 2,938
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,209,757,476
Total number of portfolio holdings 2,938
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. 6.2%
Apple, Inc. 5.4%
Microsoft Corp. 3.5%
Amazon.com, Inc. 3.3%
Alphabet, Inc., Class A 2.7%
Alphabet, Inc., Class C 2.5%
Broadcom, Inc. 2.3%
Tesla, Inc. 2.0%
Micron Technology, Inc. 1.7%
Meta Platforms, Inc., Class A 1.6%
Sector Composition
Information technology 33.6%
Financials 11.9%
Industrials 10.0%
Consumer discretionary 9.7%
Health care 9.4%
Communication services 9.0%
Consumer staples 4.7%
Energy 3.1%
Materials 2.2%
Real estate 2.1%
Utilities 2.0%
Short-term investments and other 2.3%
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. 6.2%
Apple, Inc. 5.4%
Microsoft Corp. 3.5%
Amazon.com, Inc. 3.3%
Alphabet, Inc., Class A 2.7%
Alphabet, Inc., Class C 2.5%
Broadcom, Inc. 2.3%
Tesla, Inc. 2.0%
Micron Technology, Inc. 1.7%
Meta Platforms, Inc., Class A 1.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $40 0.75%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.75%
Net Assets $ 345,843,638
Holdings Count | Holding 40
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $345,843,638
Total number of portfolio holdings 40
Portfolio turnover rate 48%
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. 14.6%
Equinix, Inc. 10.7%
Prologis, Inc. 9.7%
Simon Property Group, Inc. 6.7%
Public Storage 4.6%
Essex Property Trust, Inc. 4.5%
WP Carey, Inc. 4.4%
Ventas, Inc. 3.4%
Invitation Homes, Inc. 3.4%
UDR, Inc. 2.6%
Industry Composition
Specialized REITs 21.6%
Health care REITs 20.2%
Retail REITs 14.3%
Industrial REITs 13.7%
Residential REITs 12.1%
Diversified REITs 6.1%
Hotel and resort REITs 3.2%
Office REITs 3.0%
Hotels, restaurants and leisure 2.1%
Health care providers and services 1.8%
Software 0.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Welltower, Inc. 14.6%
Equinix, Inc. 10.7%
Prologis, Inc. 9.7%
Simon Property Group, Inc. 6.7%
Public Storage 4.6%
Essex Property Trust, Inc. 4.5%
WP Carey, Inc. 4.4%
Ventas, Inc. 3.4%
Invitation Homes, Inc. 3.4%
UDR, Inc. 2.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $54 1.00%
Expenses Paid, Amount $ 54
Expense Ratio, Percent 1.00%
Net Assets $ 345,843,638
Holdings Count | Holding 40
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $345,843,638
Total number of portfolio holdings 40
Portfolio turnover rate 48%
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. 14.6%
Equinix, Inc. 10.7%
Prologis, Inc. 9.7%
Simon Property Group, Inc. 6.7%
Public Storage 4.6%
Essex Property Trust, Inc. 4.5%
WP Carey, Inc. 4.4%
Ventas, Inc. 3.4%
Invitation Homes, Inc. 3.4%
UDR, Inc. 2.6%
Industry Composition
Specialized REITs 21.6%
Health care REITs 20.2%
Retail REITs 14.3%
Industrial REITs 13.7%
Residential REITs 12.1%
Diversified REITs 6.1%
Hotel and resort REITs 3.2%
Office REITs 3.0%
Hotels, restaurants and leisure 2.1%
Health care providers and services 1.8%
Software 0.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Welltower, Inc. 14.6%
Equinix, Inc. 10.7%
Prologis, Inc. 9.7%
Simon Property Group, Inc. 6.7%
Public Storage 4.6%
Essex Property Trust, Inc. 4.5%
WP Carey, Inc. 4.4%
Ventas, Inc. 3.4%
Invitation Homes, Inc. 3.4%
UDR, Inc. 2.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $43 0.80%
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.80%
Net Assets $ 345,843,638
Holdings Count | Holding 40
Investment Company Portfolio Turnover 48.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $345,843,638
Total number of portfolio holdings 40
Portfolio turnover rate 48%
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. 14.6%
Equinix, Inc. 10.7%
Prologis, Inc. 9.7%
Simon Property Group, Inc. 6.7%
Public Storage 4.6%
Essex Property Trust, Inc. 4.5%
WP Carey, Inc. 4.4%
Ventas, Inc. 3.4%
Invitation Homes, Inc. 3.4%
UDR, Inc. 2.6%
Industry Composition
Specialized REITs 21.6%
Health care REITs 20.2%
Retail REITs 14.3%
Industrial REITs 13.7%
Residential REITs 12.1%
Diversified REITs 6.1%
Hotel and resort REITs 3.2%
Office REITs 3.0%
Hotels, restaurants and leisure 2.1%
Health care providers and services 1.8%
Software 0.8%
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.
Largest Holdings [Text Block]
Top Ten Holdings
Welltower, Inc. 14.6%
Equinix, Inc. 10.7%
Prologis, Inc. 9.7%
Simon Property Group, Inc. 6.7%
Public Storage 4.6%
Essex Property Trust, Inc. 4.5%
WP Carey, Inc. 4.4%
Ventas, Inc. 3.4%
Invitation Homes, Inc. 3.4%
UDR, Inc. 2.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Science & Technology Trust
(Series I/JESTX)		 $58 0.97%
Expenses Paid, Amount $ 58
Expense Ratio, Percent 0.97%
Net Assets $ 1,557,771,819
Holdings Count | Holding 106
Investment Company Portfolio Turnover 221.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,557,771,819
Total number of portfolio holdings 106
Portfolio turnover rate 221%
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
Micron Technology, Inc. 11.7%
Advanced Micro Devices, Inc. 5.7%
Sandisk Corp. 5.7%
Broadcom, Inc. 5.4%
Lam Research Corp. 5.3%
Marvell Technology, Inc. 4.5%
NVIDIA Corp. 4.4%
Intel Corp. 3.9%
Applied Materials, Inc. 3.6%
KLA Corp. 3.5%
Sector Composition
Information technology 93.6%
Industrials 1.8%
Communication services 1.1%
Financials 0.3%
Short-term investments and other 3.2%
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
Micron Technology, Inc. 11.7%
Advanced Micro Devices, Inc. 5.7%
Sandisk Corp. 5.7%
Broadcom, Inc. 5.4%
Lam Research Corp. 5.3%
Marvell Technology, Inc. 4.5%
NVIDIA Corp. 4.4%
Intel Corp. 3.9%
Applied Materials, Inc. 3.6%
KLA Corp. 3.5%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Science & Technology Trust
(Series II/JAFUX)		 $70 1.17%
Expenses Paid, Amount $ 70
Expense Ratio, Percent 1.17%
Net Assets $ 1,557,771,819
Holdings Count | Holding 106
Investment Company Portfolio Turnover 221.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,557,771,819
Total number of portfolio holdings 106
Portfolio turnover rate 221%
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
Micron Technology, Inc. 11.7%
Advanced Micro Devices, Inc. 5.7%
Sandisk Corp. 5.7%
Broadcom, Inc. 5.4%
Lam Research Corp. 5.3%
Marvell Technology, Inc. 4.5%
NVIDIA Corp. 4.4%
Intel Corp. 3.9%
Applied Materials, Inc. 3.6%
KLA Corp. 3.5%
Sector Composition
Information technology 93.6%
Industrials 1.8%
Communication services 1.1%
Financials 0.3%
Short-term investments and other 3.2%
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
Micron Technology, Inc. 11.7%
Advanced Micro Devices, Inc. 5.7%
Sandisk Corp. 5.7%
Broadcom, Inc. 5.4%
Lam Research Corp. 5.3%
Marvell Technology, Inc. 4.5%
NVIDIA Corp. 4.4%
Intel Corp. 3.9%
Applied Materials, Inc. 3.6%
KLA Corp. 3.5%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Science & Technology Trust
(Series NAV/JAFSX)		 $55 0.92%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 0.92%
Net Assets $ 1,557,771,819
Holdings Count | Holding 106
Investment Company Portfolio Turnover 221.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,557,771,819
Total number of portfolio holdings 106
Portfolio turnover rate 221%
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
Micron Technology, Inc. 11.7%
Advanced Micro Devices, Inc. 5.7%
Sandisk Corp. 5.7%
Broadcom, Inc. 5.4%
Lam Research Corp. 5.3%
Marvell Technology, Inc. 4.5%
NVIDIA Corp. 4.4%
Intel Corp. 3.9%
Applied Materials, Inc. 3.6%
KLA Corp. 3.5%
Sector Composition
Information technology 93.6%
Industrials 1.8%
Communication services 1.1%
Financials 0.3%
Short-term investments and other 3.2%
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
Micron Technology, Inc. 11.7%
Advanced Micro Devices, Inc. 5.7%
Sandisk Corp. 5.7%
Broadcom, Inc. 5.4%
Lam Research Corp. 5.3%
Marvell Technology, Inc. 4.5%
NVIDIA Corp. 4.4%
Intel Corp. 3.9%
Applied Materials, Inc. 3.6%
KLA Corp. 3.5%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $58 1.07%
Expenses Paid, Amount $ 58
Expense Ratio, Percent 1.07%
Net Assets $ 297,877,892
Holdings Count | Holding 123
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $297,877,892
Total number of portfolio holdings 123
Portfolio turnover rate 30%
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
MKS, Inc. 3.8%
SiTime Corp. 2.7%
Xometry, Inc., Class A 2.5%
Credo Technology Group Holding, Ltd. 2.3%
Modine Manufacturing Company 2.3%
Nextpower, Inc., Class A 2.3%
Zurn Elkay Water Solutions Corp. 2.0%
The Vita Coco Company, Inc. 1.9%
American Healthcare REIT, Inc. 1.9%
Alignment Healthcare, Inc. 1.9%
Sector Composition
Health care 30.8%
Industrials 24.8%
Information technology 19.7%
Consumer discretionary 6.6%
Financials 6.2%
Real estate 3.6%
Energy 2.5%
Materials 2.2%
Consumer staples 1.9%
Communication services 0.8%
Utilities 0.1%
Short-term investments and other 0.8%
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
MKS, Inc. 3.8%
SiTime Corp. 2.7%
Xometry, Inc., Class A 2.5%
Credo Technology Group Holding, Ltd. 2.3%
Modine Manufacturing Company 2.3%
Nextpower, Inc., Class A 2.3%
Zurn Elkay Water Solutions Corp. 2.0%
The Vita Coco Company, Inc. 1.9%
American Healthcare REIT, Inc. 1.9%
Alignment Healthcare, Inc. 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $71 1.32%
Expenses Paid, Amount $ 71
Expense Ratio, Percent 1.32%
Net Assets $ 297,877,892
Holdings Count | Holding 123
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $297,877,892
Total number of portfolio holdings 123
Portfolio turnover rate 30%
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
MKS, Inc. 3.8%
SiTime Corp. 2.7%
Xometry, Inc., Class A 2.5%
Credo Technology Group Holding, Ltd. 2.3%
Modine Manufacturing Company 2.3%
Nextpower, Inc., Class A 2.3%
Zurn Elkay Water Solutions Corp. 2.0%
The Vita Coco Company, Inc. 1.9%
American Healthcare REIT, Inc. 1.9%
Alignment Healthcare, Inc. 1.9%
Sector Composition
Health care 30.8%
Industrials 24.8%
Information technology 19.7%
Consumer discretionary 6.6%
Financials 6.2%
Real estate 3.6%
Energy 2.5%
Materials 2.2%
Consumer staples 1.9%
Communication services 0.8%
Utilities 0.1%
Short-term investments and other 0.8%
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
MKS, Inc. 3.8%
SiTime Corp. 2.7%
Xometry, Inc., Class A 2.5%
Credo Technology Group Holding, Ltd. 2.3%
Modine Manufacturing Company 2.3%
Nextpower, Inc., Class A 2.3%
Zurn Elkay Water Solutions Corp. 2.0%
The Vita Coco Company, Inc. 1.9%
American Healthcare REIT, Inc. 1.9%
Alignment Healthcare, Inc. 1.9%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $61 1.12%
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.12%
Net Assets $ 297,877,892
Holdings Count | Holding 123
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $297,877,892
Total number of portfolio holdings 123
Portfolio turnover rate 30%
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
MKS, Inc. 3.8%
SiTime Corp. 2.7%
Xometry, Inc., Class A 2.5%
Credo Technology Group Holding, Ltd. 2.3%
Modine Manufacturing Company 2.3%
Nextpower, Inc., Class A 2.3%
Zurn Elkay Water Solutions Corp. 2.0%
The Vita Coco Company, Inc. 1.9%
American Healthcare REIT, Inc. 1.9%
Alignment Healthcare, Inc. 1.9%
Sector Composition
Health care 30.8%
Industrials 24.8%
Information technology 19.7%
Consumer discretionary 6.6%
Financials 6.2%
Real estate 3.6%
Energy 2.5%
Materials 2.2%
Consumer staples 1.9%
Communication services 0.8%
Utilities 0.1%
Short-term investments and other 0.8%
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
MKS, Inc. 3.8%
SiTime Corp. 2.7%
Xometry, Inc., Class A 2.5%
Credo Technology Group Holding, Ltd. 2.3%
Modine Manufacturing Company 2.3%
Nextpower, Inc., Class A 2.3%
Zurn Elkay Water Solutions Corp. 2.0%
The Vita Coco Company, Inc. 1.9%
American Healthcare REIT, Inc. 1.9%
Alignment Healthcare, Inc. 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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,240,894,049
Holdings Count | Holding 1
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,240,894,049
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 62.0%
U.S. Government and agency obligations 12.0%
Corporate bonds 11.6%
Collateralized mortgage obligations 7.7%
Asset-backed securities 1.7%
Foreign government obligations 0.4%
Short-term investments and other 4.6%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,240,894,049
Holdings Count | Holding 1
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,240,894,049
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 62.0%
U.S. Government and agency obligations 12.0%
Corporate bonds 11.6%
Collateralized mortgage obligations 7.7%
Asset-backed securities 1.7%
Foreign government obligations 0.4%
Short-term investments and other 4.6%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 1,240,894,049
Holdings Count | Holding 1
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $1,240,894,049
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 62.0%
U.S. Government and agency obligations 12.0%
Corporate bonds 11.6%
Collateralized mortgage obligations 7.7%
Asset-backed securities 1.7%
Foreign government obligations 0.4%
Short-term investments and other 4.6%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $47 0.87%
Expenses Paid, Amount $ 47
Expense Ratio, Percent 0.87%
Net Assets $ 312,164,289
Holdings Count | Holding 158
Investment Company Portfolio Turnover 88.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $312,164,289
Total number of portfolio holdings 158
Portfolio turnover rate 88%
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. 8.4%
Millicom International Cellular SA 5.7%
America Movil SAB de CV, Series B 3.1%
Samsung Electronics Company, Ltd., GDR 3.0%
Oversea-Chinese Banking Corp., Ltd. 2.4%
WH Group, Ltd. 2.2%
America Movil SAB de CV, ADR 2.2%
NetEase, Inc., ADR 2.2%
Credicorp, Ltd. 2.1%
WuXi AppTec Company, Ltd., H Shares 2.1%
Sector Composition
Information technology 25.9%
Financials 19.6%
Communication services 16.3%
Consumer discretionary 15.0%
Industrials 8.2%
Consumer staples 6.8%
Health care 4.4%
Materials 2.6%
Energy 0.3%
Short-term investments and other 0.9%
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
Taiwan Semiconductor Manufacturing Company, Ltd. 8.4%
Millicom International Cellular SA 5.7%
America Movil SAB de CV, Series B 3.1%
Samsung Electronics Company, Ltd., GDR 3.0%
Oversea-Chinese Banking Corp., Ltd. 2.4%
WH Group, Ltd. 2.2%
America Movil SAB de CV, ADR 2.2%
NetEase, Inc., ADR 2.2%
Credicorp, Ltd. 2.1%
WuXi AppTec Company, Ltd., H Shares 2.1%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $61 1.12%
Expenses Paid, Amount $ 61
Expense Ratio, Percent 1.12%
Net Assets $ 312,164,289
Holdings Count | Holding 158
Investment Company Portfolio Turnover 88.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $312,164,289
Total number of portfolio holdings 158
Portfolio turnover rate 88%
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. 8.4%
Millicom International Cellular SA 5.7%
America Movil SAB de CV, Series B 3.1%
Samsung Electronics Company, Ltd., GDR 3.0%
Oversea-Chinese Banking Corp., Ltd. 2.4%
WH Group, Ltd. 2.2%
America Movil SAB de CV, ADR 2.2%
NetEase, Inc., ADR 2.2%
Credicorp, Ltd. 2.1%
WuXi AppTec Company, Ltd., H Shares 2.1%
Sector Composition
Information technology 25.9%
Financials 19.6%
Communication services 16.3%
Consumer discretionary 15.0%
Industrials 8.2%
Consumer staples 6.8%
Health care 4.4%
Materials 2.6%
Energy 0.3%
Short-term investments and other 0.9%
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
Taiwan Semiconductor Manufacturing Company, Ltd. 8.4%
Millicom International Cellular SA 5.7%
America Movil SAB de CV, Series B 3.1%
Samsung Electronics Company, Ltd., GDR 3.0%
Oversea-Chinese Banking Corp., Ltd. 2.4%
WH Group, Ltd. 2.2%
America Movil SAB de CV, ADR 2.2%
NetEase, Inc., ADR 2.2%
Credicorp, Ltd. 2.1%
WuXi AppTec Company, Ltd., H Shares 2.1%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $50 0.92%
Expenses Paid, Amount $ 50
Expense Ratio, Percent 0.92%
Net Assets $ 312,164,289
Holdings Count | Holding 158
Investment Company Portfolio Turnover 88.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $312,164,289
Total number of portfolio holdings 158
Portfolio turnover rate 88%
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. 8.4%
Millicom International Cellular SA 5.7%
America Movil SAB de CV, Series B 3.1%
Samsung Electronics Company, Ltd., GDR 3.0%
Oversea-Chinese Banking Corp., Ltd. 2.4%
WH Group, Ltd. 2.2%
America Movil SAB de CV, ADR 2.2%
NetEase, Inc., ADR 2.2%
Credicorp, Ltd. 2.1%
WuXi AppTec Company, Ltd., H Shares 2.1%
Sector Composition
Information technology 25.9%
Financials 19.6%
Communication services 16.3%
Consumer discretionary 15.0%
Industrials 8.2%
Consumer staples 6.8%
Health care 4.4%
Materials 2.6%
Energy 0.3%
Short-term investments and other 0.9%
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
Taiwan Semiconductor Manufacturing Company, Ltd. 8.4%
Millicom International Cellular SA 5.7%
America Movil SAB de CV, Series B 3.1%
Samsung Electronics Company, Ltd., GDR 3.0%
Oversea-Chinese Banking Corp., Ltd. 2.4%
WH Group, Ltd. 2.2%
America Movil SAB de CV, ADR 2.2%
NetEase, Inc., ADR 2.2%
Credicorp, Ltd. 2.1%
WuXi AppTec Company, Ltd., H Shares 2.1%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $36 0.65%
Expenses Paid, Amount $ 36
Expense Ratio, Percent 0.65%
Net Assets $ 237,435,171
Holdings Count | Holding 1
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $237,435,171
Total number of portfolio holdings 1
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. 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 40.7%
Industrials 15.5%
Financials 10.9%
Consumer discretionary 8.2%
Health care 8.2%
Communication services 6.0%
Materials 2.9%
Consumer staples 2.7%
Real estate 1.2%
Energy 1.1%
Utilities 0.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $40 0.72%
Expenses Paid, Amount $ 40
Expense Ratio, Percent 0.72%
Net Assets $ 237,435,171
Holdings Count | Holding 1
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $237,435,171
Total number of portfolio holdings 1
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. 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 40.7%
Industrials 15.5%
Financials 10.9%
Consumer discretionary 8.2%
Health care 8.2%
Communication services 6.0%
Materials 2.9%
Consumer staples 2.7%
Real estate 1.2%
Energy 1.1%
Utilities 0.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $17 0.30%
Expenses Paid, Amount $ 17
Expense Ratio, Percent 0.30%
Net Assets $ 237,435,171
Holdings Count | Holding 1
Investment Company Portfolio Turnover 9.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $237,435,171
Total number of portfolio holdings 1
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. 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 40.7%
Industrials 15.5%
Financials 10.9%
Consumer discretionary 8.2%
Health care 8.2%
Communication services 6.0%
Materials 2.9%
Consumer staples 2.7%
Real estate 1.2%
Energy 1.1%
Utilities 0.6%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $42 0.83%
Expenses Paid, Amount $ 42
Expense Ratio, Percent 0.83%
Net Assets $ 496,104,517
Holdings Count | Holding 282
Investment Company Portfolio Turnover 59.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $496,104,517
Total number of portfolio holdings 282
Portfolio turnover rate 59%
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. 3.5%
Microsoft Corp. 3.5%
NVIDIA Corp. 3.0%
CenterPoint Energy, Inc. 2.7%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class A 2.6%
U.S. Treasury Note, 3.500%, 02/28/2031 2.5%
Meta Platforms, Inc., Class A 2.3%
Advanced Micro Devices, Inc. 2.2%
U.S. Treasury Note, 3.625%, 10/31/2030 2.0%
Portfolio Composition
Common stocks 62.8%
U.S. Government 15.3%
Term loans 8.3%
Corporate bonds 8.1%
Asset-backed securities 0.1%
Short-term investments and other 5.4%
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. 3.5%
Microsoft Corp. 3.5%
NVIDIA Corp. 3.0%
CenterPoint Energy, Inc. 2.7%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class A 2.6%
U.S. Treasury Note, 3.500%, 02/28/2031 2.5%
Meta Platforms, Inc., Class A 2.3%
Advanced Micro Devices, Inc. 2.2%
U.S. Treasury Note, 3.625%, 10/31/2030 2.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $55 1.08%
Expenses Paid, Amount $ 55
Expense Ratio, Percent 1.08%
Net Assets $ 496,104,517
Holdings Count | Holding 282
Investment Company Portfolio Turnover 59.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $496,104,517
Total number of portfolio holdings 282
Portfolio turnover rate 59%
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. 3.5%
Microsoft Corp. 3.5%
NVIDIA Corp. 3.0%
CenterPoint Energy, Inc. 2.7%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class A 2.6%
U.S. Treasury Note, 3.500%, 02/28/2031 2.5%
Meta Platforms, Inc., Class A 2.3%
Advanced Micro Devices, Inc. 2.2%
U.S. Treasury Note, 3.625%, 10/31/2030 2.0%
Portfolio Composition
Common stocks 62.8%
U.S. Government 15.3%
Term loans 8.3%
Corporate bonds 8.1%
Asset-backed securities 0.1%
Short-term investments and other 5.4%
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. 3.5%
Microsoft Corp. 3.5%
NVIDIA Corp. 3.0%
CenterPoint Energy, Inc. 2.7%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class A 2.6%
U.S. Treasury Note, 3.500%, 02/28/2031 2.5%
Meta Platforms, Inc., Class A 2.3%
Advanced Micro Devices, Inc. 2.2%
U.S. Treasury Note, 3.625%, 10/31/2030 2.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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)		 $45 0.88%
Expenses Paid, Amount $ 45
Expense Ratio, Percent 0.88%
Net Assets $ 496,104,517
Holdings Count | Holding 282
Investment Company Portfolio Turnover 59.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $496,104,517
Total number of portfolio holdings 282
Portfolio turnover rate 59%
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. 3.5%
Microsoft Corp. 3.5%
NVIDIA Corp. 3.0%
CenterPoint Energy, Inc. 2.7%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class A 2.6%
U.S. Treasury Note, 3.500%, 02/28/2031 2.5%
Meta Platforms, Inc., Class A 2.3%
Advanced Micro Devices, Inc. 2.2%
U.S. Treasury Note, 3.625%, 10/31/2030 2.0%
Portfolio Composition
Common stocks 62.8%
U.S. Government 15.3%
Term loans 8.3%
Corporate bonds 8.1%
Asset-backed securities 0.1%
Short-term investments and other 5.4%
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. 3.5%
Microsoft Corp. 3.5%
NVIDIA Corp. 3.0%
CenterPoint Energy, Inc. 2.7%
Broadcom, Inc. 2.7%
Alphabet, Inc., Class A 2.6%
U.S. Treasury Note, 3.500%, 02/28/2031 2.5%
Meta Platforms, Inc., Class A 2.3%
Advanced Micro Devices, Inc. 2.2%
U.S. Treasury Note, 3.625%, 10/31/2030 2.0%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Balanced Portfolio
(Series I/JHBPX)		 $10 0.20%
Expenses Paid, Amount $ 10
Expense Ratio, Percent 0.20%
Net Assets $ 996,286,858
Holdings Count | Holding 33
Investment Company Portfolio Turnover 84.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $996,286,858
Total number of portfolio holdings 33
Portfolio turnover rate 84%
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 94.3%
Equity 49.0%
Fixed income 41.9%
Alternative and specialty 3.4%
U.S. Government and Agency obligations 5.7%
U.S. Government 5.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Balanced Portfolio
(Series II/JAILX)		 $20 0.40%
Expenses Paid, Amount $ 20
Expense Ratio, Percent 0.40%
Net Assets $ 996,286,858
Holdings Count | Holding 33
Investment Company Portfolio Turnover 84.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $996,286,858
Total number of portfolio holdings 33
Portfolio turnover rate 84%
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 94.3%
Equity 49.0%
Fixed income 41.9%
Alternative and specialty 3.4%
U.S. Government and Agency obligations 5.7%
U.S. Government 5.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Balanced Portfolio
(Series NAV/JAINX)		 $8 0.15%
Expenses Paid, Amount $ 8
Expense Ratio, Percent 0.15%
Net Assets $ 996,286,858
Holdings Count | Holding 33
Investment Company Portfolio Turnover 84.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $996,286,858
Total number of portfolio holdings 33
Portfolio turnover rate 84%
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 94.3%
Equity 49.0%
Fixed income 41.9%
Alternative and specialty 3.4%
U.S. Government and Agency obligations 5.7%
U.S. Government 5.7%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Conservative Portfolio
(Series NAV/JAIQX)		 $9 0.18%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.18%
Net Assets $ 140,985,938
Holdings Count | Holding 26
Investment Company Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $140,985,938
Total number of portfolio holdings 26
Portfolio turnover rate 97%
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 89.9%
Fixed income 67.4%
Equity 20.0%
Alternative and specialty 2.5%
U.S. Government and Agency obligations 10.1%
U.S. Government 10.1%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Conservative Portfolio
(Series II/JAIRX)		 $22 0.43%
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.43%
Net Assets $ 140,985,938
Holdings Count | Holding 26
Investment Company Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $140,985,938
Total number of portfolio holdings 26
Portfolio turnover rate 97%
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 89.9%
Fixed income 67.4%
Equity 20.0%
Alternative and specialty 2.5%
U.S. Government and Agency obligations 10.1%
U.S. Government 10.1%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Conservative Portfolio
(Series I/JHCIX)		 $12 0.23%
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.23%
Net Assets $ 140,985,938
Holdings Count | Holding 26
Investment Company Portfolio Turnover 97.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $140,985,938
Total number of portfolio holdings 26
Portfolio turnover rate 97%
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 89.9%
Fixed income 67.4%
Equity 20.0%
Alternative and specialty 2.5%
U.S. Government and Agency obligations 10.1%
U.S. Government 10.1%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Growth Portfolio
(Series I/JHGPX)		 $9 0.18%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.18%
Net Assets $ 5,279,419,379
Holdings Count | Holding 32
Investment Company Portfolio Turnover 76.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,279,419,379
Total number of portfolio holdings 32
Portfolio turnover rate 76%
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 96.4%
Equity 68.4%
Fixed income 24.2%
Alternative and specialty 3.8%
U.S. Government and Agency obligations 3.6%
U.S. Government 3.6%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Growth Portfolio
(Series II/JAIKX)		 $20 0.38%
Expenses Paid, Amount $ 20
Expense Ratio, Percent 0.38%
Net Assets $ 5,279,419,379
Holdings Count | Holding 32
Investment Company Portfolio Turnover 76.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,279,419,379
Total number of portfolio holdings 32
Portfolio turnover rate 76%
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 96.4%
Equity 68.4%
Fixed income 24.2%
Alternative and specialty 3.8%
U.S. Government and Agency obligations 3.6%
U.S. Government 3.6%
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.
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Growth Portfolio
(Series NAV/JAIJX)		 $7 0.13%
Expenses Paid, Amount $ 7
Expense Ratio, Percent 0.13%
Net Assets $ 5,279,419,379
Holdings Count | Holding 32
Investment Company Portfolio Turnover 76.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $5,279,419,379
Total number of portfolio holdings 32
Portfolio turnover rate 76%
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 96.4%
Equity 68.4%
Fixed income 24.2%
Alternative and specialty 3.8%
U.S. Government and Agency obligations 3.6%
U.S. Government 3.6%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Moderate Portfolio
(Series NAV/JAIOX)		 $8 0.16%
Expenses Paid, Amount $ 8
Expense Ratio, Percent 0.16%
Net Assets $ 269,070,675
Holdings Count | Holding 33
Investment Company Portfolio Turnover 88.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $269,070,675
Total number of portfolio holdings 33
Portfolio turnover rate 88%
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 93.8%
Fixed income 51.6%
Equity 38.9%
Alternative and specialty 3.3%
U.S. Government and Agency obligations 6.2%
U.S. Government 6.2%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Moderate Portfolio
(Series II/JAIPX)		 $21 0.41%
Expenses Paid, Amount $ 21
Expense Ratio, Percent 0.41%
Net Assets $ 269,070,675
Holdings Count | Holding 33
Investment Company Portfolio Turnover 88.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $269,070,675
Total number of portfolio holdings 33
Portfolio turnover rate 88%
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 93.8%
Fixed income 51.6%
Equity 38.9%
Alternative and specialty 3.3%
U.S. Government and Agency obligations 6.2%
U.S. Government 6.2%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
Fund (Class) Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
Lifestyle Moderate Portfolio
(Series I/JHMPX)		 $11 0.21%
Expenses Paid, Amount $ 11
Expense Ratio, Percent 0.21%
Net Assets $ 269,070,675
Holdings Count | Holding 33
Investment Company Portfolio Turnover 88.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $269,070,675
Total number of portfolio holdings 33
Portfolio turnover rate 88%
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 93.8%
Fixed income 51.6%
Equity 38.9%
Alternative and specialty 3.3%
U.S. Government and Agency obligations 6.2%
U.S. Government 6.2%
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, 2026 to June 30, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the fund at dfinview.com/johnhancock?site=funds. You can also request this information by contacting us at 800-344-1029 for John Hancock Variable Annuities and 800-732-5543 for John Hancock Variable Life Insurance.
Additional Information Phone Number 800-344-1029800-732-5543
Additional Information Website dfinview.com/johnhancock?site=funds
Expenses [Text Block]
What were the fund costs during the last six months ?
(Based on a hypothetical $10,000 investment)
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 $ 3,196,816,998
Holdings Count | Holding 3,332
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
Fund net assets $3,196,816,998
Total number of portfolio holdings 3,332
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%
Apple, Inc. 3.4%
Microsoft Corp. 2.2%
Amazon.com, Inc. 1.9%
Alphabet, Inc., Class A 1.7%
Broadcom, Inc. 1.4%
Alphabet, Inc., Class C 1.4%
ASML Holding NV 1.2%
Micron Technology, Inc. 1.0%
Meta Platforms, Inc., Class A 1.0%
Sector Composition
Information technology 25.2%
Financials 16.0%
Industrials 13.3%
Health care 9.4%
Consumer discretionary 8.6%
Communication services 6.4%
Consumer staples 4.8%
Materials 3.5%
Energy 3.2%
Utilities 2.7%
Real estate 2.2%
Short-term investments and other 4.7%
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%
Apple, Inc. 3.4%
Microsoft Corp. 2.2%
Amazon.com, Inc. 1.9%
Alphabet, Inc., Class A 1.7%
Broadcom, Inc. 1.4%
Alphabet, Inc., Class C 1.4%
ASML Holding NV 1.2%
Micron Technology, Inc. 1.0%
Meta Platforms, Inc., Class A 1.0%