Shareholder Report |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||||||||
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Aug. 31, 2026
USD ($)
Holding
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| 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 | ||||||||||||||||||||||||||||||||||||||||||||||
| C000008885 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Core Bond Fund | ||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class NAV | ||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JHCDX | ||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Core Bond Fund (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)
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| Expenses Paid, Amount | $ 61 | ||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.61% | ||||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] | Management’s Discussion of Fund Performance SUMMARY OF RESULTS Core Bond Fund (Class NAV/JHCDX) returned 1.55% for the year ended August 31, 2026. High-quality fixed income performed reasonably well during the period, as higher overall yields more than offset weakness resulting from rising interest rates, which were driven by geopolitical conflict, accelerated capital expenditures for artificial intelligence (AI) investment, and sticky inflation. TOP PERFORMANCE CONTRIBUTORS Agency mortgage-backed securities | Positions in agency mortgage-backed passthroughs were the largest contributor to performance. Agency collateralized mortgage obligations (CMOs) were also strong contributors. Asset-backed securities and corporate bonds | Asset-backed securities and corporate bonds issued by financial institutions were also significant contributors to performance. TOP PERFORMANCE DETRACTORS U.S. Treasuries | Holdings in longer maturity Treasuries detracted from performance, as yields were not fully able to offset the impact of higher interest rates in this part of the yield curve. Technology bonds | Holdings in corporate bonds in the technology sector detracted from performance, as concerns over the magnitude of debt issuance used to fund AI-related capital expenditures grew. 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.
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| 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 |
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| Average Annual Return [Table Text Block] |
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| 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 | $ 1,687,035,911 | ||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 946 | ||||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 9,588,543 | ||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 277.00% | ||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total investments of the fund. Portfolio Composition
Quality Composition Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 8-31-26 and do not reflect subsequent downgrades or upgrades, if any. Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
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| Credit Quality Explanation [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. “Not rated” securities are those with no ratings available from these agencies. All ratings are as of 8-31-26 and do not reflect subsequent downgrades or upgrades, if any.
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| Credit Ratings Selection [Text Block] | Ratings are from Moody’s Investors Service, Inc. If not available, we have used S&P Global Ratings. In the absence of ratings from these agencies, we have used Fitch Ratings, Inc. | ||||||||||||||||||||||||||||||||||||||||||||||
| C000073278 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Mid Value Fund | ||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class NAV | ||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JMVNX | ||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Mid Value Fund (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)
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| Expenses Paid, Amount | $ 94 | ||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.85% | ||||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] | Management’s Discussion of Fund Performance SUMMARY OF RESULTS Mid Value Fund (Class NAV/JMVNX) returned 22.00% for the year ended August 31, 2026. U.S. equity markets generated strong gains in the 12-month period. Stocks advanced in late 2025, supported by resilient economic growth, Federal Reserve interest rate cuts, solid corporate earnings, and ongoing enthusiasm surrounding artificial intelligence (AI). Markets experienced periods of heightened volatility in 2026 as investors weighed tariff-related inflation concerns, shifting interest rate expectations, and conflict in the Middle East, which drove sharp swings in oil prices. Despite these headwinds, equities recovered from periodic sell-offs and reached new highs, supported by generally strong corporate earnings and continued optimism surrounding AI-related investment. TOP PERFORMANCE CONTRIBUTORS Sandisk Corp. | This NAND memory company was the leading absolute contributor to performance as shares surged amid increased recognition of the company’s value potential following its spinoff from Western Digital Corp., supported by sharply higher NAND pricing, substantial margin expansion, and strong AI-driven storage demand. Western Digital Corp. | The pure-play hard disk drive (HDD) company following its flash business spinoff also aided performance as shares benefited from strong hyperscale cloud HDD demand, higher exabyte volumes, favorable pricing, margin expansion, and durable AI-driven storage demand. TOP PERFORMANCE DETRACTORS Perrigo Company PLC | The consumer self-care company detracted the most from absolute performance as soft over-the-counter consumption and persistent infant formula challenges pressured sales and led to reduced expectations, while lower expected cash flows and weaker business prospects resulted in significant goodwill impairments. Verra Mobility Corp. | The smart mobility technology company also hindered performance as shares declined sharply in May after major customer Avis Budget terminated a significant commercial services contract, prompting management to cut full-year guidance. 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.
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| 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 |
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| Average Annual Return [Table Text Block] |
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| 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 | $ 1,224,953,021 | ||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 133 | ||||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 10,531,755 | ||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 48.00% | ||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Top Ten Holdings
Sector Composition
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
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| Largest Holdings [Text Block] | Top Ten Holdings
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| C000095456 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | Capital Appreciation Value Fund | ||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class NAV | ||||||||||||||||||||||||||||||||||||||||||||||
| Trading Symbol | JCAVX | ||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock Capital Appreciation Value Fund (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)
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| Expenses Paid, Amount | $ 86 | ||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.82% | ||||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
Capital Appreciation Value Fund (Class NAV/JCAVX) returned 10.24% for the year ended August 31, 2026. U.S. equity markets generated strong gains in the 12-month period. Stocks advanced in late 2025, supported by resilient economic growth, Federal Reserve interest rate cuts, solid corporate earnings, and ongoing enthusiasm surrounding artificial intelligence (AI). Markets experienced periods of heightened volatility in 2026 as investors weighed tariff-related inflation concerns, shifting interest rate expectations, and conflict in the Middle East, which drove sharp swings in oil prices. Despite these headwinds, equities recovered from periodic sell-offs and reached new highs, supported by generally strong corporate earnings and continued optimism surrounding AI-related investment.
TOP PERFORMANCE CONTRIBUTORS
Advanced Micro Devices, Inc. | The leading semiconductor company contributed to absolute returns during the year as its partnership with OpenAI and continued demand for AI-related processors supported its shares.
Apple, Inc. | A position in the company also contributed to absolute returns as investor enthusiasm for new product launches and strong earnings reports supported its shares during the year.
TOP PERFORMANCE DETRACTORS
PTC, Inc. | As a leading computer-aided design and product life-cycle management software provider, PTC detracted from absolute returns during the year as muted guidance, the divestiture of its industrial internet of things business, and competitive concerns weighed on shares.
Meta Platforms, Inc. | Shares of the company detracted from absolute returns as investors remained concerned about the company's increased investment in AI infrastructure throughout the period.
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.
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| 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
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| Average Annual Return [Table Text Block] |
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| 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 | $ 1,335,287,184 | ||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 245 | ||||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 9,504,811 | ||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 144.00% | ||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
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| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Top Ten Holdings
Portfolio Composition
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
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| Largest Holdings [Text Block] |
Top Ten Holdings
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| C000173477 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | International Strategic Equity Allocation Fund | ||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class NAV | ||||||||||||||||||||||||||||||||||||||||||||||
| No Trading Symbol Flag | true | ||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock International Strategic Equity Allocation Fund (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)
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| Expenses Paid, Amount | $ 63 | ||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.56% | ||||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] |
Management’s Discussion of Fund Performance
SUMMARY OF RESULTS
International Strategic Equity Allocation Fund (Class NAV) returned 26.73% for the year ended August 31, 2026. International equity markets advanced during the period, supported by solid corporate earnings growth, continued investment in artificial intelligence (AI) related infrastructure, resilient economic activity, and generally accommodative monetary policies. Periodic volatility stemming from geopolitical tensions, higher energy prices, and trade policy uncertainty tempered gains but did not derail overall positive market performance.
TOP PERFORMANCE CONTRIBUTORS
Information technology stocks | The information technology sector contributed the most to absolute performance. Holdings in Taiwan Semiconductor Manufacturing Company, Ltd. were an indispensable component in the global semiconductor supply chain as AI-fueled demand remained robust.
Samsung Electronics Company, Ltd. | Growing global demand for high-bandwidth memory, particularly for usage in AI chips and datacenters, helped boost this stock.
TOP PERFORMANCE DETRACTORS
Communication services | This was the only sector detracting from absolute performance primarily as a result of holdings in Tencent Holdings, Ltd.
Certain other holdings | Other weak performers included SAP SE, Xiaomi Corp., and Novo Nordisk A/S.
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.
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| 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
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| Average Annual Return [Table Text Block] |
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| Performance Inception Date | Oct. 17, 2016 | ||||||||||||||||||||||||||||||||||||||||||||||
| 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 | $ 5,438,015,862 | ||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 1,966 | ||||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 24,360,213 | ||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 29.00% | ||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] |
Fund Statistics
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| Holdings [Text Block] |
Graphical Representation of Holdings
The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund.
Top Ten Holdings
Sector Composition
Country Composition
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
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| Largest Holdings [Text Block] |
Top Ten Holdings
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| C000173478 [Member] | |||||||||||||||||||||||||||||||||||||||||||||||
| Shareholder Report [Line Items] | |||||||||||||||||||||||||||||||||||||||||||||||
| Fund Name | U.S. Sector Rotation Fund | ||||||||||||||||||||||||||||||||||||||||||||||
| Class Name | Class NAV | ||||||||||||||||||||||||||||||||||||||||||||||
| No Trading Symbol Flag | true | ||||||||||||||||||||||||||||||||||||||||||||||
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about the John Hancock U.S. Sector Rotation Fund (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. | ||||||||||||||||||||||||||||||||||||||||||||||
| Material Fund Change Notice [Text Block] | This report describes changes to the fund that occurred during the reporting period.
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| 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)
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| Expenses Paid, Amount | $ 58 | ||||||||||||||||||||||||||||||||||||||||||||||
| Expense Ratio, Percent | 0.53% | ||||||||||||||||||||||||||||||||||||||||||||||
| Factors Affecting Performance [Text Block] | Management’s Discussion of Fund Performance SUMMARY OF RESULTS U.S. Sector Rotation Fund (Class NAV) returned 19.75% for the year ended August 31, 2026. U.S. equities delivered a robust gain in the annual period, albeit with a brief stretch of weakness in March following the start of the conflict in Iran. Investors were encouraged by the highly favorable backdrop of healthy economic growth trends, strong corporate earnings, and supportive U.S. Federal Reserve policy, as well as optimism about artificial intelligence (AI). TOP PERFORMANCE CONTRIBUTORS Information technology | Stocks in this sector made the largest contribution to absolute performance due to the combination of their return and sizable portfolio weighting. The semiconductor stocks Apple, Inc., NVIDIA Corp., and Micron Technology, Inc. all performed well. Health care | Eli Lilly & Company, which continued to benefit from strong demand for its weight loss drugs, also added to absolute performance. Communication services | Alphabet, Inc. was a leading contributor in this sector along with Warner Brothers Discovery, Inc., and Verizon Communications, Inc. TOP PERFORMANCE DETRACTORS Specific individual holdings | Shares of Meta Platforms, Inc. came under pressure on concerns that the company’s significant investments in AI were reducing its free cash flow. Netflix, Inc., which lagged due to slower subscriber growth and declining viewer engagement, was another key detractor. Certain software stocks | Although the fund’s information technology holdings performed well overall, certain software stocks—including Microsoft Corp. and Oracle Corp.—were notable detractors. 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.
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| 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 |
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| Average Annual Return [Table Text Block] |
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| Performance Inception Date | Sep. 26, 2016 | ||||||||||||||||||||||||||||||||||||||||||||||
| 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. | ||||||||||||||||||||||||||||||||||||||||||||||
| Material Change Date | Jun. 01, 2026 | ||||||||||||||||||||||||||||||||||||||||||||||
| Net Assets | $ 5,076,222,203 | ||||||||||||||||||||||||||||||||||||||||||||||
| Holdings Count | Holding | 508 | ||||||||||||||||||||||||||||||||||||||||||||||
| Advisory Fees Paid, Amount | $ 24,883,870 | ||||||||||||||||||||||||||||||||||||||||||||||
| Investment Company Portfolio Turnover | 18.00% | ||||||||||||||||||||||||||||||||||||||||||||||
| Additional Fund Statistics [Text Block] | Fund Statistics
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| Holdings [Text Block] | Graphical Representation of Holdings The tables below show the investment makeup of the fund, representing a percentage of the total net assets of the fund. Top Ten Holdings
Sector Composition
Holdings may not have been held by the fund for the entire period and are subject to change without notice. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk and may change at any time.
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| Largest Holdings [Text Block] | Top Ten Holdings
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| Material Fund Change [Text Block] | Material Fund Changes At a special meeting of shareholders of the fund held on May 26, 2026, the fund’s shareholders approved a proposal to change the fund’s diversification status from diversified to non-diversified effective on June 1, 2026 (the Effective Date). In connection with this change, non-diversified risk was added to the fund’s Prospectus. This is a summary of certain changes to the fund since 9-1-25 . For more complete information, please refer to the fund’s prospectus. The currently effective prospectus is available at jhinvestments.com/underlying-funds or by calling 800-344-1029.
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| Material Fund Change Risks Change [Text Block] | At a special meeting of shareholders of the fund held on May 26, 2026, the fund’s shareholders approved a proposal to change the fund’s diversification status from diversified to non-diversified effective on June 1, 2026 (the Effective Date). In connection with this change, non-diversified risk was added to the fund’s Prospectus.
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| Summary of Change Legend [Text Block] | This is a summary of certain changes to the fund since 9-1-25 . For more complete information, please refer to the fund’s prospectus. The currently effective prospectus is available at jhinvestments.com/underlying-funds or by calling 800-344-1029.
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| Updated Prospectus Phone Number | 800-344-1029 | ||||||||||||||||||||||||||||||||||||||||||||||
| Updated Prospectus Web Address | jhinvestments.com/underlying-funds |