Shareholder Report |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Aug. 31, 2026
USD ($)
Holding
| |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Document Type | N-CSR | ||||||||||||||||||||||||||||||||||||||||||||
| Amendment Flag | false | ||||||||||||||||||||||||||||||||||||||||||||
| Registrant Name | JOHN HANCOCK FUNDS II | ||||||||||||||||||||||||||||||||||||||||||||
| Entity Central Index Key | 0001331971 | ||||||||||||||||||||||||||||||||||||||||||||
| Entity Investment Company Type | N-1A | ||||||||||||||||||||||||||||||||||||||||||||
| Document Period End Date | Aug. 31, 2026 | ||||||||||||||||||||||||||||||||||||||||||||
| C000106452 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JULAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class R6/JULAX) returned 20.72% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009055 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTLAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 18 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.16% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class R5/JTLAX) returned 20.64% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009054 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JSLAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 40 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.36% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class R4/JSLAX) returned 20.46% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113497 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JQLAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 67 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.61% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class R2/JQLAX) returned 20.09% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000155628 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTAIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 24 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.22% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class I/JTAIX) returned 20.61% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009052 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class C | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JCLAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 134 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 1.22% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class C/JCLAX) returned 19.41% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009050 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JALAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 57 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.52% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class A/JALAX) returned 20.18% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009056 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Aggressive Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JILAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Aggressive Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 18 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.16% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Aggressive Portfolio (Class 1/JILAX) returned 20.67% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, albeit to a much lesser extent than equities due to its lower return and modest portfolio weighting.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 3,275,684,137 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 75 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,418,232 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009068 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JILBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 20 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.19% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class 1/JILBX) returned 13.91% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000034075 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHLAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 15 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.14% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class 5/JHLAX) returned 14.03% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009062 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JALBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 59 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.55% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class A/JALBX) returned 13.51% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009064 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class C | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JCLBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 133 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 1.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class C/JCLBX) returned 12.72% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000155629 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTBIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 27 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class I/JTBIX) returned 13.92% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113498 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JQLBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 68 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.64% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class R2/JQLBX) returned 13.51% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009066 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JSLBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 43 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.40% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class R4/JSLBX) returned 13.69% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009067 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTSBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 21 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.20% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class R5/JTSBX) returned 13.91% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106453 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Balanced Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JULBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Balanced Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 16 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.15% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Balanced Portfolio (Class R6/JULBX) returned 14.03% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, emerging markets debt, and multi-sector bonds. Holdings in high yield bonds, bank loans, and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 7,077,903,528 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 8,209,056 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106454 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JULCX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 22 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.21% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class R6/JULCX) returned 6.43% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009076 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTLRX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class R5/JTLRX) returned 6.28% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009075 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JSLCX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 46 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.45% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class R4/JSLCX) returned 6.08% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113499 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JQLCX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 70 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.68% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class R2/JQLCX) returned 5.91% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000155630 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTOIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 32 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.31% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class I/JTOIX) returned 6.31% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009073 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class C | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JCLCX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 134 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 1.31% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class C/JCLCX) returned 5.25% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009071 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JALRX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 63 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.61% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class A/JALRX) returned 5.98% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009077 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Conservative Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JILCX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Conservative Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Conservative Portfolio (Class 1/JILCX) returned 6.38% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in multi-sector bonds, high yield bonds, short-term bonds, bank loans, and short-term U.S. Treasury Inflation Protected Securities aided returns as well.
TOP PERFORMANCE DETRACTORS
No detractors | At a time of positive returns for most segments of the financial markets, none of the fund’s holdings detracted from absolute performance.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,422,833,140 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,431,019 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 13.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009086 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JILGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 19 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.17% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class 1/JILGX) returned 17.72% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000034076 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHLGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 13 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.12% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class 5/JHLGX) returned 17.90% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009080 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JALGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 58 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.53% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class A/JALGX) returned 17.43% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009082 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class C | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JCLGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 133 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 1.23% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class C/JCLGX) returned 16.55% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000155631 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTGIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 25 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.23% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class I/JTGIX) returned 17.77% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113500 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JQLGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 67 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.62% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class R2/JQLGX) returned 17.28% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009084 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JSLGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 41 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.38% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class R4/JSLGX) returned 17.55% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009085 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTLGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 20 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.18% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class R5/JTLGX) returned 17.82% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106455 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Growth Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JULGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Growth Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 14 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.13% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Growth Portfolio (Class R6/JULGX) returned 17.84% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds and emerging markets debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 8,421,057,018 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 7,904,648 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 11.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106456 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JULMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 18 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.17% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class R6/JULMX) returned 10.20% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009104 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTLMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 23 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.22% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class R5/JTLMX) returned 10.12% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009103 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JSLMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 44 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.42% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class R4/JSLMX) returned 9.90% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113501 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JQLMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 70 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.67% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class R2/JQLMX) returned 9.67% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000155632 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JTMIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 29 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.28% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class I/JTMIX) returned 9.98% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009101 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class C | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JCLMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 134 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 1.28% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class C/JCLMX) returned 9.00% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009099 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JALMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 61 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.58% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class A/JALMX) returned 9.73% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000034077 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHLMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 18 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.17% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class 5/JHLMX) returned 10.12% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000009105 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager Lifestyle Moderate Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JILMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager Lifestyle Moderate Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 23 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.22% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager Lifestyle Moderate Portfolio (Class 1/JILMX) returned 10.12% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made the most significant contribution to absolute performance, including the fund’s sizable allocation to large caps. International developed market equities further helped results, as did emerging market stocks. The real assets portfolio was an additional contributor with strong returns for the energy and metals & mining sectors.
Bond funds | The fixed-income allocation also contributed, led by intermediate-term bonds, multi-sector bonds, and emerging markets debt. Holdings in high yield bonds, short-term bonds, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,931,239,996 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 2,651,643 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 12.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037309 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2010 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLAOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2010 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2010 Lifetime Portfolio (Class 1/JLAOX) returned 8.50% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 103,722,439 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 27.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037307 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2010 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLAAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2010 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 43 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2010 Lifetime Portfolio (Class A/JLAAX) returned 8.13% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 103,722,439 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 27.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153956 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2010 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRLX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2010 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 11 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2010 Lifetime Portfolio (Class I/JHRLX) returned 8.44% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 103,722,439 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 27.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113503 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2010 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLAEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2010 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 53 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.51% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2010 Lifetime Portfolio (Class R2/JLAEX) returned 7.92% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 103,722,439 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 27.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106459 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2010 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLAIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2010 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2010 Lifetime Portfolio (Class R6/JLAIX) returned 8.55% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 103,722,439 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 27.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106460 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2015 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLBJX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2015 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2015 Lifetime Portfolio (Class R6/JLBJX) returned 9.69% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 156,355,554 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037339 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2015 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLBHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2015 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.06% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2015 Lifetime Portfolio (Class R5/JLBHX) returned 9.66% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 156,355,554 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037338 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2015 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLBGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2015 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 17 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.16% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2015 Lifetime Portfolio (Class R4/JLBGX) returned 9.41% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 156,355,554 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113504 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2015 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLBKX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2015 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 52 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2015 Lifetime Portfolio (Class R2/JLBKX) returned 9.11% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 156,355,554 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153957 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2015 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHREX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2015 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2015 Lifetime Portfolio (Class I/JHREX) returned 9.46% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 156,355,554 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037330 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2015 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLBAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2015 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 43 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2015 Lifetime Portfolio (Class A/JLBAX) returned 9.26% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 156,355,554 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037340 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2015 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLBOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2015 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2015 Lifetime Portfolio (Class 1/JLBOX) returned 9.53% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 156,355,554 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 30.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037351 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2020 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLDOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2020 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2020 Lifetime Portfolio (Class 1/JLDOX) returned 10.91% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 334,617,817 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 91 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037341 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2020 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLDAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2020 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 43 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2020 Lifetime Portfolio (Class A/JLDAX) returned 10.50% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 334,617,817 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 91 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153958 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2020 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRVX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2020 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2020 Lifetime Portfolio (Class I/JHRVX) returned 10.80% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 334,617,817 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 91 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113505 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2020 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLDEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2020 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 52 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.49% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2020 Lifetime Portfolio (Class R2/JLDEX) returned 10.36% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 334,617,817 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 91 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037349 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2020 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLDGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2020 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 27 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.26% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2020 Lifetime Portfolio (Class R4/JLDGX) returned 10.63% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 334,617,817 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 91 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037350 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2020 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLDHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2020 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2020 Lifetime Portfolio (Class R5/JLDHX) returned 10.78% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 334,617,817 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 91 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106461 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2020 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLDIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2020 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2020 Lifetime Portfolio (Class R6/JLDIX) returned 10.87% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 334,617,817 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 91 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106462 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2025 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLEIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2025 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2025 Lifetime Portfolio (Class R6/JLEIX) returned 12.20% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 650,919,838 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037361 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2025 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLEHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2025 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.06% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2025 Lifetime Portfolio (Class R5/JLEHX) returned 12.13% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 650,919,838 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037360 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2025 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLEGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2025 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 26 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2025 Lifetime Portfolio (Class R4/JLEGX) returned 11.88% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 650,919,838 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113506 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2025 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLEEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2025 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 53 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2025 Lifetime Portfolio (Class R2/JLEEX) returned 11.69% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 650,919,838 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153959 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2025 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRNX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2025 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2025 Lifetime Portfolio (Class I/JHRNX) returned 12.14% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 650,919,838 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037352 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2025 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLEAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2025 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 43 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2025 Lifetime Portfolio (Class A/JLEAX) returned 11.65% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 650,919,838 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037362 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2025 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLEOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2025 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2025 Lifetime Portfolio (Class 1/JLEOX) returned 12.13% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 650,919,838 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037373 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2030 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLFOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2030 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2030 Lifetime Portfolio (Class 1/JLFOX) returned 14.21% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,086,197,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037363 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2030 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLFAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2030 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 44 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2030 Lifetime Portfolio (Class A/JLFAX) returned 13.75% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,086,197,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153960 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2030 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2030 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2030 Lifetime Portfolio (Class I/JHRGX) returned 14.11% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,086,197,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113507 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2030 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLFEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2030 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 53 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2030 Lifetime Portfolio (Class R2/JLFEX) returned 13.61% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,086,197,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037371 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2030 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLFGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2030 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 27 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2030 Lifetime Portfolio (Class R4/JLFGX) returned 13.93% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,086,197,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037372 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2030 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLFHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2030 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2030 Lifetime Portfolio (Class R5/JLFHX) returned 14.11% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,086,197,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106463 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2030 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLFIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2030 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2030 Lifetime Portfolio (Class R6/JLFIX) returned 14.27% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in short-term bonds, high yield bonds, multi-sector bonds, short-term U.S. Treasury Inflation Protected Securities, and bank loans aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,086,197,376 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106464 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2035 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLHIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2035 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2035 Lifetime Portfolio (Class R6/JLHIX) returned 16.23% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,190,623,703 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037383 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2035 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLHHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2035 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2035 Lifetime Portfolio (Class R5/JLHHX) returned 16.25% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,190,623,703 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037382 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2035 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLHGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2035 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 28 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.26% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2035 Lifetime Portfolio (Class R4/JLHGX) returned 16.00% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,190,623,703 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113508 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2035 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLHEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2035 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 54 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2035 Lifetime Portfolio (Class R2/JLHEX) returned 15.74% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,190,623,703 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153961 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2035 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2035 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2035 Lifetime Portfolio (Class I/JHRMX) returned 16.20% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,190,623,703 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037374 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2035 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLHAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2035 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 44 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2035 Lifetime Portfolio (Class A/JLHAX) returned 15.77% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,190,623,703 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037384 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2035 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLHOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2035 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2035 Lifetime Portfolio (Class 1/JLHOX) returned 16.25% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,190,623,703 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 92 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037395 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2040 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLIOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2040 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2040 Lifetime Portfolio (Class 1/JLIOX) returned 17.89% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,058,913,843 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037385 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2040 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLIAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2040 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2040 Lifetime Portfolio (Class A/JLIAX) returned 17.49% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,058,913,843 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153962 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2040 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRDX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2040 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2040 Lifetime Portfolio (Class I/JHRDX) returned 17.90% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,058,913,843 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113509 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2040 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLIEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2040 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 54 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2040 Lifetime Portfolio (Class R2/JLIEX) returned 17.51% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,058,913,843 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037393 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2040 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLIGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2040 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 27 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2040 Lifetime Portfolio (Class R4/JLIGX) returned 17.74% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,058,913,843 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037394 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2040 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLIHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2040 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2040 Lifetime Portfolio (Class R5/JLIHX) returned 17.94% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,058,913,843 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106465 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2040 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLIIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2040 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2040 Lifetime Portfolio (Class R6/JLIIX) returned 17.97% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in international real estate investment trusts and U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,058,913,843 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 87 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 22.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106466 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2045 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLJIX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2045 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2045 Lifetime Portfolio (Class R6/JLJIX) returned 19.41% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,024,345,141 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037405 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2045 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLJHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2045 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2045 Lifetime Portfolio (Class R5/JLJHX) returned 19.36% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,024,345,141 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037404 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2045 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLJGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2045 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 27 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2045 Lifetime Portfolio (Class R4/JLJGX) returned 19.18% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,024,345,141 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113510 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2045 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLJEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2045 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 55 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2045 Lifetime Portfolio (Class R2/JLJEX) returned 18.87% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,024,345,141 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153963 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2045 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHROX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2045 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2045 Lifetime Portfolio (Class I/JHROX) returned 19.30% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,024,345,141 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037396 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2045 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLJAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2045 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2045 Lifetime Portfolio (Class A/JLJAX) returned 18.91% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,024,345,141 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037406 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2045 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLJOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2045 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 5 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2045 Lifetime Portfolio (Class 1/JLJOX) returned 19.43% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by intermediate-term bonds and emerging markets debt. Holdings in high yield bonds and short-term bonds aided returns as well.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 1,024,345,141 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 85 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037417 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2050 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKOX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2050 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2050 Lifetime Portfolio (Class 1/JLKOX) returned 20.46% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 697,641,979 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037407 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2050 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKAX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2050 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2050 Lifetime Portfolio (Class A/JLKAX) returned 19.97% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 697,641,979 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153964 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2050 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRPX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2050 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2050 Lifetime Portfolio (Class I/JHRPX) returned 20.38% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 697,641,979 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000113511 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2050 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2050 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 55 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2050 Lifetime Portfolio (Class R2/JLKEX) returned 19.89% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 697,641,979 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037415 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2050 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKGX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2050 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 28 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2050 Lifetime Portfolio (Class R4/JLKGX) returned 20.13% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 697,641,979 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000037416 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2050 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKHX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2050 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2050 Lifetime Portfolio (Class R5/JLKHX) returned 20.42% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 697,641,979 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000106467 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2050 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKRX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2050 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2050 Lifetime Portfolio (Class R6/JLKRX) returned 20.46% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns. The real assets portfolio was an additional contributor with strong returns for energy stocks and the metals & mining sector.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, small positions in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) were adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 697,641,979 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 84 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 21.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000138477 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2055 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKTX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2055 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2055 Lifetime Portfolio (Class R6/JLKTX) returned 20.41% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 482,927,299 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000138476 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2055 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKSX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2055 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2055 Lifetime Portfolio (Class R5/JLKSX) returned 20.35% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 482,927,299 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000138475 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2055 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKQX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2055 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 19 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.17% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2055 Lifetime Portfolio (Class R4/JLKQX) returned 20.32% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 482,927,299 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000138473 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2055 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKNX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2055 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 55 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2055 Lifetime Portfolio (Class R2/JLKNX) returned 19.84% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 482,927,299 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000153974 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2055 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHRTX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2055 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2055 Lifetime Portfolio (Class I/JHRTX) returned 20.40% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 482,927,299 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000138479 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2055 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKLX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2055 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2055 Lifetime Portfolio (Class A/JLKLX) returned 19.99% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 482,927,299 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000138478 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2055 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JLKUX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2055 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2055 Lifetime Portfolio (Class 1/JLKUX) returned 20.47% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 482,927,299 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000167626 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2060 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JRETX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2060 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2060 Lifetime Portfolio (Class 1/JRETX) returned 20.42% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 358,277,199 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000167627 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2060 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JJERX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2060 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2060 Lifetime Portfolio (Class A/JJERX) returned 19.98% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 358,277,199 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000167619 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2060 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JMENX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2060 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2060 Lifetime Portfolio (Class I/JMENX) returned 20.42% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 358,277,199 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000167621 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2060 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JVIMX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2060 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 55 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2060 Lifetime Portfolio (Class R2/JVIMX) returned 19.89% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 358,277,199 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000167623 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2060 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JROUX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2060 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 28 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.25% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2060 Lifetime Portfolio (Class R4/JROUX) returned 20.17% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 358,277,199 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000167624 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2060 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JGHTX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2060 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2060 Lifetime Portfolio (Class R5/JGHTX) returned 20.37% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 358,277,199 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000167625 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2060 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JESRX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2060 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2060 Lifetime Portfolio (Class R6/JESRX) returned 20.46% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 358,277,199 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 83 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000221539 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2065 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JABEX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2065 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2065 Lifetime Portfolio (Class R6/JABEX) returned 20.49% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Sep. 23, 2020 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 169,983,197 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 82 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000221538 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2065 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R5 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JABDX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2065 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2065 Lifetime Portfolio (Class R5/JABDX) returned 20.44% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Sep. 23, 2020 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 169,983,197 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 82 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000221537 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2065 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R4 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JABBX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2065 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 19 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.17% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2065 Lifetime Portfolio (Class R4/JABBX) returned 20.24% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Sep. 23, 2020 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 169,983,197 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 82 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000221536 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2065 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R2 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAAZX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2065 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 55 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.50% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2065 Lifetime Portfolio (Class R2/JAAZX) returned 20.02% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Sep. 23, 2020 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 169,983,197 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 82 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000221535 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2065 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class I | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JABSX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2065 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 12 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.11% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2065 Lifetime Portfolio (Class I/JABSX) returned 20.32% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $250,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $250,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Sep. 23, 2020 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 169,983,197 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 82 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000221534 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2065 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAAWX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2065 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2065 Lifetime Portfolio (Class A/JAAWX) returned 20.04% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Sep. 23, 2020 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 169,983,197 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 82 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000221540 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2065 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JAAVX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2065 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2065 Lifetime Portfolio (Class 1/JAAVX) returned 20.46% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Sep. 23, 2020 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 169,983,197 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 82 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 19.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000259699 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2070 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHOPX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2070 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/underlying-funds. You can also request this information by contacting us at 800-344-1029. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/underlying-funds | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 6 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.05% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2070 Lifetime Portfolio (Class 1/JHOPX) returned 20.68% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Apr. 25, 2025 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 12,753,053 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 29 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 25.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000259695 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2070 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class A | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHOQX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2070 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 45 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.41% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2070 Lifetime Portfolio (Class A/JHOQX) returned 20.24% (excluding sales charges) for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $10,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $10,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Apr. 25, 2025 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 12,753,053 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 29 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 25.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||
| C000259698 [Member] | |||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Multimanager 2070 Lifetime Portfolio | ||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class R6 | ||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHBZX | ||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Multimanager 2070 Lifetime Portfolio (the fund) for the period of September 1, 2025 to August 31, 2026. | ||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report Annual or Semi-Annual | annual shareholder report | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information [Text Block] | You can find additional information about the fund at jhinvestments.com/documents. You can also request this information by contacting us at 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Phone Number | 800-225-5291 | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Information Website | jhinvestments.com/documents | ||||||||||||||||||||||||||||||||||||||||||||
| Expenses [Text Block] |
What were the fund costs during the last year ?
(Based on a hypothetical $10,000 investment)
|
||||||||||||||||||||||||||||||||||||||||||||
| Expenses Paid, Amount | $ 1 | ||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.01% | ||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Multimanager 2070 Lifetime Portfolio (Class R6/JHBZX) returned 20.72% for the year ended August 31, 2026. Global equities produced sizable gains in the 12-month period that ended on August 31, 2026. Investors were encouraged by the favorable combination of healthy economic growth trends, robust corporate earnings, and generally supportive central bank policies, together with optimism about artificial intelligence. While technology stocks performed very well, the value style outpaced growth on a global basis and contributed meaningfully to the markets’ strong showing. Emerging market equities also posted outsized returns. Bonds registered more modest gains, led by credit-oriented investments. Income was the primary contributor to total returns for fixed income instruments, as prices came under pressure from concerns about persistent inflation, global conflicts, energy prices, and mounting government debt across the developed world.
TOP PERFORMANCE CONTRIBUTORS
Equity allocation | U.S. equities made a significant contribution to absolute performance, led by large cap equities. International developed market equities further helped results, as did emerging market stocks. Defensive equities also generated positive returns.
Bond funds | The fixed-income allocation contributed positively, led by short-term bonds and emerging market debt.
TOP PERFORMANCE DETRACTORS
Specific positions | At a time of positive returns for most segments of the financial markets, the majority of the fund’s holdings recorded a gain. However, a small position in U.S. Treasury STRIPS (Separate Trading of Registered Interest and Principal of Securities) was adversely affected by rising yields.
The views expressed in this report are those of the portfolio management team and are subject to change. They are not meant as investment advice.
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Past Does Not Indicate Future [Text] | Past performance does not guarantee future results. | ||||||||||||||||||||||||||||||||||||||||||||
| Line Graph [Table Text Block] |
Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the fund (or for the life of the fund, if shorter). It assumes a $1,000,000 initial investment in the fund and in an appropriate, broad-based securities market index for the same period.
GROWTH OF $1,000,000
|
||||||||||||||||||||||||||||||||||||||||||||
| Average Annual Return [Table Text Block] |
|
||||||||||||||||||||||||||||||||||||||||||||
| Performance Inception Date | Apr. 25, 2025 | ||||||||||||||||||||||||||||||||||||||||||||
| No Deduction of Taxes [Text Block] | The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. | ||||||||||||||||||||||||||||||||||||||||||||
| Updated Performance Information Location [Text Block] | Due to market volatility and other factors, the fund’s current performance may be higher or lower than the performance shown and can be found at jhinvestments.com/investments or by calling 800-225-5291. | ||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 12,753,053 | ||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 29 | ||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 0 | ||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 25.00% | ||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
|
||||||||||||||||||||||||||||||||||||||||||||
| 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
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
|
||||||||||||||||||||||||||||||||||||||||||||